Dibyendu Majumdar
9 years ago
parent
d12440d797
commit
9bf704a4d3
@ -0,0 +1,65 @@
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cmake_minimum_required(VERSION 2.8)
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project(Ravi)
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enable_language(C)
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enable_testing()
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if (MSVC)
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set(CMAKE_C_FLAGS_DEBUG "/Od /D_DEBUG /MDd /Zi")
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set(CMAKE_C_FLAGS_RELEASE "/DNDEBUG /O2 /MD")
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set(CMAKE_C_FLAGS_RELWITHDEBINFO "/DNDEBUG /O2 /MD /Zi")
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set(CMAKE_C_FLAGS_MINSIZEREL "/DNDEBUG /O1 /MD")
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SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "/DEBUG")
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SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "/RELEASE /INCREMENTAL:NO")
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SET(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "/DEBUG /RELEASE /INCREMENTAL:NO")
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SET(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "/RELEASE /INCREMENTAL:NO")
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SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${TCMALLOC_LINK_FLAGS}")
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SET(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
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SET(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
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SET(CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO}")
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SET(CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL "${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL}")
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# Disable signed/unsigned int conversion warnings.
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add_definitions("/wd4018")
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# Disable warning about using struct/class for the same symobl.
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add_definitions("/wd4099")
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# Disable performance warning about int-to-bool conversion.
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add_definitions("/wd4800")
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endif()
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include_directories("${PROJECT_SOURCE_DIR}/include")
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add_definitions(-DLUA_COMPAT_MODULE)
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# define the lua core source files
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set (LUA_CORE_SRCS src/lapi.c src/lcode.c src/lctype.c src/ldebug.c src/ldo.c src/ldump.c
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src/lfunc.c src/lgc.c src/llex.c src/lmem.c src/lobject.c src/lopcodes.c
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src/lparser.c src/lstate.c src/lstring.c src/ltable.c src/ltm.c src/lundump.c
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src/lvm.c src/lzio.c)
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# define the lua lib source files
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set (LUA_LIB_SRCS src/lauxlib.c src/lbaselib.c src/lbitlib.c src/lcorolib.c src/ldblib.c src/liolib.c
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src/lmathlib.c src/loslib.c src/ltablib.c src/lstrlib.c src/loadlib.c src/linit.c src/lutf8lib.c)
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if (MSVC)
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source_group("Ravi Source Files" FILES ${LUA_CORE_SRCS} ${LUA_LIB_SRCS})
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endif(MSVC)
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file(GLOB RAVI_HEADERS "${PROJECT_SOURCE_DIR}/include/*.h")
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if (MSVC)
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source_group("Ravi Headers" FILES ${RAVI_HEADERS})
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endif()
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#Main library
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add_library(ravi SHARED ${RAVI_HEADERS} ${LUA_LIB_SRCS} ${LUA_CORE_SRCS})
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set_target_properties(ravi PROPERTIES DEFINE_SYMBOL "LUA_BUILD_AS_DLL")
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add_executable(lua src/lua.c)
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target_link_libraries(lua ravi)
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#VM test
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add_executable(test_vm tests/test_vm.c)
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target_link_libraries(test_vm ravi)
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add_test(TestVM test_vm)
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@ -0,0 +1,24 @@
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/*
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** $Id: lapi.h,v 2.8 2014/07/15 21:26:50 roberto Exp $
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** Auxiliary functions from Lua API
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** See Copyright Notice in lua.h
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*/
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#ifndef lapi_h
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#define lapi_h
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#include "llimits.h"
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#include "lstate.h"
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#define api_incr_top(L) {L->top++; api_check(L->top <= L->ci->top, \
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"stack overflow");}
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#define adjustresults(L,nres) \
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{ if ((nres) == LUA_MULTRET && L->ci->top < L->top) L->ci->top = L->top; }
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#define api_checknelems(L,n) api_check((n) < (L->top - L->ci->func), \
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"not enough elements in the stack")
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#endif
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@ -0,0 +1,256 @@
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/*
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** $Id: lauxlib.h,v 1.128 2014/10/29 16:11:17 roberto Exp $
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** Auxiliary functions for building Lua libraries
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** See Copyright Notice in lua.h
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*/
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#ifndef lauxlib_h
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#define lauxlib_h
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#include <stddef.h>
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#include <stdio.h>
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#include "lua.h"
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/* extra error code for 'luaL_load' */
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#define LUA_ERRFILE (LUA_ERRERR+1)
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typedef struct luaL_Reg {
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const char *name;
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lua_CFunction func;
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} luaL_Reg;
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#define LUAL_NUMSIZES (sizeof(lua_Integer)*16 + sizeof(lua_Number))
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LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver, size_t sz);
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#define luaL_checkversion(L) \
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luaL_checkversion_(L, LUA_VERSION_NUM, LUAL_NUMSIZES)
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LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
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LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
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LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len);
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LUALIB_API int (luaL_argerror) (lua_State *L, int arg, const char *extramsg);
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LUALIB_API const char *(luaL_checklstring) (lua_State *L, int arg,
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size_t *l);
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LUALIB_API const char *(luaL_optlstring) (lua_State *L, int arg,
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const char *def, size_t *l);
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LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int arg);
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LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int arg, lua_Number def);
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LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int arg);
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LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int arg,
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lua_Integer def);
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LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
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LUALIB_API void (luaL_checktype) (lua_State *L, int arg, int t);
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LUALIB_API void (luaL_checkany) (lua_State *L, int arg);
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LUALIB_API int (luaL_newmetatable) (lua_State *L, const char *tname);
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LUALIB_API void (luaL_setmetatable) (lua_State *L, const char *tname);
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LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, const char *tname);
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LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname);
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LUALIB_API void (luaL_where) (lua_State *L, int lvl);
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LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...);
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LUALIB_API int (luaL_checkoption) (lua_State *L, int arg, const char *def,
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const char *const lst[]);
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LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname);
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LUALIB_API int (luaL_execresult) (lua_State *L, int stat);
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/* pre-defined references */
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#define LUA_NOREF (-2)
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#define LUA_REFNIL (-1)
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LUALIB_API int (luaL_ref) (lua_State *L, int t);
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LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref);
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LUALIB_API int (luaL_loadfilex) (lua_State *L, const char *filename,
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const char *mode);
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#define luaL_loadfile(L,f) luaL_loadfilex(L,f,NULL)
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LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz,
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const char *name, const char *mode);
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LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
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LUALIB_API lua_State *(luaL_newstate) (void);
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LUALIB_API lua_Integer (luaL_len) (lua_State *L, int idx);
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LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p,
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const char *r);
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LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup);
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LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname);
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LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1,
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const char *msg, int level);
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LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
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lua_CFunction openf, int glb);
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/*
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** ===============================================================
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** some useful macros
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** ===============================================================
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*/
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#define luaL_newlibtable(L,l) \
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lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1)
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#define luaL_newlib(L,l) \
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(luaL_checkversion(L), luaL_newlibtable(L,l), luaL_setfuncs(L,l,0))
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#define luaL_argcheck(L, cond,arg,extramsg) \
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((void)((cond) || luaL_argerror(L, (arg), (extramsg))))
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#define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL))
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#define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL))
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#define luaL_typename(L,i) lua_typename(L, lua_type(L,(i)))
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#define luaL_dofile(L, fn) \
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(luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0))
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#define luaL_dostring(L, s) \
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(luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0))
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#define luaL_getmetatable(L,n) (lua_getfield(L, LUA_REGISTRYINDEX, (n)))
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#define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n)))
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#define luaL_loadbuffer(L,s,sz,n) luaL_loadbufferx(L,s,sz,n,NULL)
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/*
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** {======================================================
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** Generic Buffer manipulation
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** =======================================================
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*/
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typedef struct luaL_Buffer {
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char *b; /* buffer address */
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size_t size; /* buffer size */
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size_t n; /* number of characters in buffer */
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lua_State *L;
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char initb[LUAL_BUFFERSIZE]; /* initial buffer */
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} luaL_Buffer;
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#define luaL_addchar(B,c) \
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((void)((B)->n < (B)->size || luaL_prepbuffsize((B), 1)), \
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((B)->b[(B)->n++] = (c)))
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#define luaL_addsize(B,s) ((B)->n += (s))
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LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B);
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LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz);
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LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l);
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LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s);
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LUALIB_API void (luaL_addvalue) (luaL_Buffer *B);
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LUALIB_API void (luaL_pushresult) (luaL_Buffer *B);
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LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz);
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LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz);
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#define luaL_prepbuffer(B) luaL_prepbuffsize(B, LUAL_BUFFERSIZE)
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/* }====================================================== */
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/*
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** {======================================================
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** File handles for IO library
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** =======================================================
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*/
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/*
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** A file handle is a userdata with metatable 'LUA_FILEHANDLE' and
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** initial structure 'luaL_Stream' (it may contain other fields
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** after that initial structure).
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*/
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#define LUA_FILEHANDLE "FILE*"
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typedef struct luaL_Stream {
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FILE *f; /* stream (NULL for incompletely created streams) */
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lua_CFunction closef; /* to close stream (NULL for closed streams) */
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} luaL_Stream;
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/* }====================================================== */
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/* compatibility with old module system */
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#if defined(LUA_COMPAT_MODULE)
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LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname,
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int sizehint);
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LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname,
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const luaL_Reg *l, int nup);
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#define luaL_register(L,n,l) (luaL_openlib(L,(n),(l),0))
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#endif
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/*
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** {==================================================================
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** "Abstraction Layer" for basic report of messages and errors
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** ===================================================================
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*/
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/* print a string */
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#if !defined(lua_writestring)
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#define lua_writestring(s,l) fwrite((s), sizeof(char), (l), stdout)
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#endif
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/* print a newline and flush the output */
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#if !defined(lua_writeline)
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#define lua_writeline() (lua_writestring("\n", 1), fflush(stdout))
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#endif
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/* print an error message */
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#if !defined(lua_writestringerror)
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#define lua_writestringerror(s,p) \
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(fprintf(stderr, (s), (p)), fflush(stderr))
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#endif
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/* }================================================================== */
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/*
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** {============================================================
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** Compatibility with deprecated conversions
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** =============================================================
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*/
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#if defined(LUA_COMPAT_APIINTCASTS)
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#define luaL_checkunsigned(L,a) ((lua_Unsigned)luaL_checkinteger(L,a))
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#define luaL_optunsigned(L,a,d) \
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((lua_Unsigned)luaL_optinteger(L,a,(lua_Integer)(d)))
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#define luaL_checkint(L,n) ((int)luaL_checkinteger(L, (n)))
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#define luaL_optint(L,n,d) ((int)luaL_optinteger(L, (n), (d)))
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#define luaL_checklong(L,n) ((long)luaL_checkinteger(L, (n)))
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#define luaL_optlong(L,n,d) ((long)luaL_optinteger(L, (n), (d)))
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#endif
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/* }============================================================ */
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#endif
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@ -0,0 +1,87 @@
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/*
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** $Id: lcode.h,v 1.63 2013/12/30 20:47:58 roberto Exp $
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** Code generator for Lua
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** See Copyright Notice in lua.h
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*/
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#ifndef lcode_h
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#define lcode_h
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#include "llex.h"
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#include "lobject.h"
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#include "lopcodes.h"
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#include "lparser.h"
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/*
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** Marks the end of a patch list. It is an invalid value both as an absolute
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** address, and as a list link (would link an element to itself).
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*/
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#define NO_JUMP (-1)
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/*
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** grep "ORDER OPR" if you change these enums (ORDER OP)
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*/
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typedef enum BinOpr {
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OPR_ADD, OPR_SUB, OPR_MUL, OPR_MOD, OPR_POW,
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OPR_DIV,
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OPR_IDIV,
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OPR_BAND, OPR_BOR, OPR_BXOR,
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OPR_SHL, OPR_SHR,
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OPR_CONCAT,
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OPR_EQ, OPR_LT, OPR_LE,
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OPR_NE, OPR_GT, OPR_GE,
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OPR_AND, OPR_OR,
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OPR_NOBINOPR
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} BinOpr;
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typedef enum UnOpr { OPR_MINUS, OPR_BNOT, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;
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#define getcode(fs,e) ((fs)->f->code[(e)->u.info])
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#define luaK_codeAsBx(fs,o,A,sBx) luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx)
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#define luaK_setmultret(fs,e) luaK_setreturns(fs, e, LUA_MULTRET)
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#define luaK_jumpto(fs,t) luaK_patchlist(fs, luaK_jump(fs), t)
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LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
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LUAI_FUNC int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C);
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LUAI_FUNC int luaK_codek (FuncState *fs, int reg, int k);
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LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
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LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
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LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
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LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
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LUAI_FUNC int luaK_stringK (FuncState *fs, TString *s);
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LUAI_FUNC int luaK_intK (FuncState *fs, lua_Integer n);
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LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e);
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LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e);
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LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e);
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LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e);
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LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e);
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LUAI_FUNC int luaK_exp2RK (FuncState *fs, expdesc *e);
|
||||
LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
|
||||
LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
|
||||
LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e);
|
||||
LUAI_FUNC void luaK_goiffalse (FuncState *fs, expdesc *e);
|
||||
LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
|
||||
LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults);
|
||||
LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e);
|
||||
LUAI_FUNC int luaK_jump (FuncState *fs);
|
||||
LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
|
||||
LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
|
||||
LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
|
||||
LUAI_FUNC void luaK_patchclose (FuncState *fs, int list, int level);
|
||||
LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
|
||||
LUAI_FUNC int luaK_getlabel (FuncState *fs);
|
||||
LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line);
|
||||
LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
|
||||
LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1,
|
||||
expdesc *v2, int line);
|
||||
LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
|
||||
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,95 @@
|
||||
/*
|
||||
** $Id: lctype.h,v 1.12 2011/07/15 12:50:29 roberto Exp $
|
||||
** 'ctype' functions for Lua
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef lctype_h
|
||||
#define lctype_h
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
|
||||
/*
|
||||
** WARNING: the functions defined here do not necessarily correspond
|
||||
** to the similar functions in the standard C ctype.h. They are
|
||||
** optimized for the specific needs of Lua
|
||||
*/
|
||||
|
||||
#if !defined(LUA_USE_CTYPE)
|
||||
|
||||
#if 'A' == 65 && '0' == 48
|
||||
/* ASCII case: can use its own tables; faster and fixed */
|
||||
#define LUA_USE_CTYPE 0
|
||||
#else
|
||||
/* must use standard C ctype */
|
||||
#define LUA_USE_CTYPE 1
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
#if !LUA_USE_CTYPE /* { */
|
||||
|
||||
#include <limits.h>
|
||||
|
||||
#include "llimits.h"
|
||||
|
||||
|
||||
#define ALPHABIT 0
|
||||
#define DIGITBIT 1
|
||||
#define PRINTBIT 2
|
||||
#define SPACEBIT 3
|
||||
#define XDIGITBIT 4
|
||||
|
||||
|
||||
#define MASK(B) (1 << (B))
|
||||
|
||||
|
||||
/*
|
||||
** add 1 to char to allow index -1 (EOZ)
|
||||
*/
|
||||
#define testprop(c,p) (luai_ctype_[(c)+1] & (p))
|
||||
|
||||
/*
|
||||
** 'lalpha' (Lua alphabetic) and 'lalnum' (Lua alphanumeric) both include '_'
|
||||
*/
|
||||
#define lislalpha(c) testprop(c, MASK(ALPHABIT))
|
||||
#define lislalnum(c) testprop(c, (MASK(ALPHABIT) | MASK(DIGITBIT)))
|
||||
#define lisdigit(c) testprop(c, MASK(DIGITBIT))
|
||||
#define lisspace(c) testprop(c, MASK(SPACEBIT))
|
||||
#define lisprint(c) testprop(c, MASK(PRINTBIT))
|
||||
#define lisxdigit(c) testprop(c, MASK(XDIGITBIT))
|
||||
|
||||
/*
|
||||
** this 'ltolower' only works for alphabetic characters
|
||||
*/
|
||||
#define ltolower(c) ((c) | ('A' ^ 'a'))
|
||||
|
||||
|
||||
/* two more entries for 0 and -1 (EOZ) */
|
||||
LUAI_DDEC const lu_byte luai_ctype_[UCHAR_MAX + 2];
|
||||
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
/*
|
||||
** use standard C ctypes
|
||||
*/
|
||||
|
||||
#include <ctype.h>
|
||||
|
||||
|
||||
#define lislalpha(c) (isalpha(c) || (c) == '_')
|
||||
#define lislalnum(c) (isalnum(c) || (c) == '_')
|
||||
#define lisdigit(c) (isdigit(c))
|
||||
#define lisspace(c) (isspace(c))
|
||||
#define lisprint(c) (isprint(c))
|
||||
#define lisxdigit(c) (isxdigit(c))
|
||||
|
||||
#define ltolower(c) (tolower(c))
|
||||
|
||||
#endif /* } */
|
||||
|
||||
#endif
|
||||
|
||||
@ -0,0 +1,40 @@
|
||||
/*
|
||||
** $Id: ldebug.h,v 2.12 2014/11/10 14:46:05 roberto Exp $
|
||||
** Auxiliary functions from Debug Interface module
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef ldebug_h
|
||||
#define ldebug_h
|
||||
|
||||
|
||||
#include "lstate.h"
|
||||
|
||||
|
||||
#define pcRel(pc, p) (cast(int, (pc) - (p)->code) - 1)
|
||||
|
||||
#define getfuncline(f,pc) (((f)->lineinfo) ? (f)->lineinfo[pc] : -1)
|
||||
|
||||
#define resethookcount(L) (L->hookcount = L->basehookcount)
|
||||
|
||||
/* Active Lua function (given call info) */
|
||||
#define ci_func(ci) (clLvalue((ci)->func))
|
||||
|
||||
|
||||
LUAI_FUNC l_noret luaG_typeerror (lua_State *L, const TValue *o,
|
||||
const char *opname);
|
||||
LUAI_FUNC l_noret luaG_concaterror (lua_State *L, const TValue *p1,
|
||||
const TValue *p2);
|
||||
LUAI_FUNC l_noret luaG_opinterror (lua_State *L, const TValue *p1,
|
||||
const TValue *p2,
|
||||
const char *msg);
|
||||
LUAI_FUNC l_noret luaG_tointerror (lua_State *L, const TValue *p1,
|
||||
const TValue *p2);
|
||||
LUAI_FUNC l_noret luaG_ordererror (lua_State *L, const TValue *p1,
|
||||
const TValue *p2);
|
||||
LUAI_FUNC l_noret luaG_runerror (lua_State *L, const char *fmt, ...);
|
||||
LUAI_FUNC l_noret luaG_errormsg (lua_State *L);
|
||||
LUAI_FUNC void luaG_traceexec (lua_State *L);
|
||||
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,46 @@
|
||||
/*
|
||||
** $Id: ldo.h,v 2.21 2014/10/25 11:50:46 roberto Exp $
|
||||
** Stack and Call structure of Lua
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef ldo_h
|
||||
#define ldo_h
|
||||
|
||||
|
||||
#include "lobject.h"
|
||||
#include "lstate.h"
|
||||
#include "lzio.h"
|
||||
|
||||
|
||||
#define luaD_checkstack(L,n) if (L->stack_last - L->top <= (n)) \
|
||||
luaD_growstack(L, n); else condmovestack(L);
|
||||
|
||||
|
||||
#define incr_top(L) {L->top++; luaD_checkstack(L,0);}
|
||||
|
||||
#define savestack(L,p) ((char *)(p) - (char *)L->stack)
|
||||
#define restorestack(L,n) ((TValue *)((char *)L->stack + (n)))
|
||||
|
||||
|
||||
/* type of protected functions, to be ran by 'runprotected' */
|
||||
typedef void (*Pfunc) (lua_State *L, void *ud);
|
||||
|
||||
LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
|
||||
const char *mode);
|
||||
LUAI_FUNC void luaD_hook (lua_State *L, int event, int line);
|
||||
LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults);
|
||||
LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults,
|
||||
int allowyield);
|
||||
LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
|
||||
ptrdiff_t oldtop, ptrdiff_t ef);
|
||||
LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);
|
||||
LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);
|
||||
LUAI_FUNC void luaD_growstack (lua_State *L, int n);
|
||||
LUAI_FUNC void luaD_shrinkstack (lua_State *L);
|
||||
|
||||
LUAI_FUNC l_noret luaD_throw (lua_State *L, int errcode);
|
||||
LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
|
||||
|
||||
#endif
|
||||
|
||||
@ -0,0 +1,54 @@
|
||||
/*
|
||||
** $Id: lfunc.h,v 2.14 2014/06/19 18:27:20 roberto Exp $
|
||||
** Auxiliary functions to manipulate prototypes and closures
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef lfunc_h
|
||||
#define lfunc_h
|
||||
|
||||
|
||||
#include "lobject.h"
|
||||
|
||||
|
||||
#define sizeCclosure(n) (cast(int, sizeof(CClosure)) + \
|
||||
cast(int, sizeof(TValue)*((n)-1)))
|
||||
|
||||
#define sizeLclosure(n) (cast(int, sizeof(LClosure)) + \
|
||||
cast(int, sizeof(TValue *)*((n)-1)))
|
||||
|
||||
|
||||
/* test whether thread is in 'twups' list */
|
||||
#define isintwups(L) (L->twups != L)
|
||||
|
||||
|
||||
/*
|
||||
** Upvalues for Lua closures
|
||||
*/
|
||||
struct UpVal {
|
||||
TValue *v; /* points to stack or to its own value */
|
||||
lu_mem refcount; /* reference counter */
|
||||
union {
|
||||
struct { /* (when open) */
|
||||
UpVal *next; /* linked list */
|
||||
int touched; /* mark to avoid cycles with dead threads */
|
||||
} open;
|
||||
TValue value; /* the value (when closed) */
|
||||
} u;
|
||||
};
|
||||
|
||||
#define upisopen(up) ((up)->v != &(up)->u.value)
|
||||
|
||||
|
||||
LUAI_FUNC Proto *luaF_newproto (lua_State *L);
|
||||
LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nelems);
|
||||
LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nelems);
|
||||
LUAI_FUNC void luaF_initupvals (lua_State *L, LClosure *cl);
|
||||
LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level);
|
||||
LUAI_FUNC void luaF_close (lua_State *L, StkId level);
|
||||
LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f);
|
||||
LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number,
|
||||
int pc);
|
||||
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,138 @@
|
||||
/*
|
||||
** $Id: lgc.h,v 2.86 2014/10/25 11:50:46 roberto Exp $
|
||||
** Garbage Collector
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef lgc_h
|
||||
#define lgc_h
|
||||
|
||||
|
||||
#include "lobject.h"
|
||||
#include "lstate.h"
|
||||
|
||||
/*
|
||||
** Collectable objects may have one of three colors: white, which
|
||||
** means the object is not marked; gray, which means the
|
||||
** object is marked, but its references may be not marked; and
|
||||
** black, which means that the object and all its references are marked.
|
||||
** The main invariant of the garbage collector, while marking objects,
|
||||
** is that a black object can never point to a white one. Moreover,
|
||||
** any gray object must be in a "gray list" (gray, grayagain, weak,
|
||||
** allweak, ephemeron) so that it can be visited again before finishing
|
||||
** the collection cycle. These lists have no meaning when the invariant
|
||||
** is not being enforced (e.g., sweep phase).
|
||||
*/
|
||||
|
||||
|
||||
|
||||
/* how much to allocate before next GC step */
|
||||
#if !defined(GCSTEPSIZE)
|
||||
/* ~100 small strings */
|
||||
#define GCSTEPSIZE (cast_int(100 * sizeof(TString)))
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** Possible states of the Garbage Collector
|
||||
*/
|
||||
#define GCSpropagate 0
|
||||
#define GCSatomic 1
|
||||
#define GCSswpallgc 2
|
||||
#define GCSswpfinobj 3
|
||||
#define GCSswptobefnz 4
|
||||
#define GCSswpend 5
|
||||
#define GCScallfin 6
|
||||
#define GCSpause 7
|
||||
|
||||
|
||||
#define issweepphase(g) \
|
||||
(GCSswpallgc <= (g)->gcstate && (g)->gcstate <= GCSswpend)
|
||||
|
||||
|
||||
/*
|
||||
** macro to tell when main invariant (white objects cannot point to black
|
||||
** ones) must be kept. During a collection, the sweep
|
||||
** phase may break the invariant, as objects turned white may point to
|
||||
** still-black objects. The invariant is restored when sweep ends and
|
||||
** all objects are white again.
|
||||
*/
|
||||
|
||||
#define keepinvariant(g) ((g)->gcstate <= GCSatomic)
|
||||
|
||||
|
||||
/*
|
||||
** some useful bit tricks
|
||||
*/
|
||||
#define resetbits(x,m) ((x) &= cast(lu_byte, ~(m)))
|
||||
#define setbits(x,m) ((x) |= (m))
|
||||
#define testbits(x,m) ((x) & (m))
|
||||
#define bitmask(b) (1<<(b))
|
||||
#define bit2mask(b1,b2) (bitmask(b1) | bitmask(b2))
|
||||
#define l_setbit(x,b) setbits(x, bitmask(b))
|
||||
#define resetbit(x,b) resetbits(x, bitmask(b))
|
||||
#define testbit(x,b) testbits(x, bitmask(b))
|
||||
|
||||
|
||||
/* Layout for bit use in 'marked' field: */
|
||||
#define WHITE0BIT 0 /* object is white (type 0) */
|
||||
#define WHITE1BIT 1 /* object is white (type 1) */
|
||||
#define BLACKBIT 2 /* object is black */
|
||||
#define FINALIZEDBIT 3 /* object has been marked for finalization */
|
||||
/* bit 7 is currently used by tests (luaL_checkmemory) */
|
||||
|
||||
#define WHITEBITS bit2mask(WHITE0BIT, WHITE1BIT)
|
||||
|
||||
|
||||
#define iswhite(x) testbits((x)->marked, WHITEBITS)
|
||||
#define isblack(x) testbit((x)->marked, BLACKBIT)
|
||||
#define isgray(x) /* neither white nor black */ \
|
||||
(!testbits((x)->marked, WHITEBITS | bitmask(BLACKBIT)))
|
||||
|
||||
#define tofinalize(x) testbit((x)->marked, FINALIZEDBIT)
|
||||
|
||||
#define otherwhite(g) ((g)->currentwhite ^ WHITEBITS)
|
||||
#define isdeadm(ow,m) (!(((m) ^ WHITEBITS) & (ow)))
|
||||
#define isdead(g,v) isdeadm(otherwhite(g), (v)->marked)
|
||||
|
||||
#define changewhite(x) ((x)->marked ^= WHITEBITS)
|
||||
#define gray2black(x) l_setbit((x)->marked, BLACKBIT)
|
||||
|
||||
#define luaC_white(g) cast(lu_byte, (g)->currentwhite & WHITEBITS)
|
||||
|
||||
|
||||
#define luaC_condGC(L,c) \
|
||||
{if (G(L)->GCdebt > 0) {c;}; condchangemem(L);}
|
||||
#define luaC_checkGC(L) luaC_condGC(L, luaC_step(L);)
|
||||
|
||||
|
||||
#define luaC_barrier(L,p,v) { \
|
||||
if (iscollectable(v) && isblack(p) && iswhite(gcvalue(v))) \
|
||||
luaC_barrier_(L,obj2gco(p),gcvalue(v)); }
|
||||
|
||||
#define luaC_barrierback(L,p,v) { \
|
||||
if (iscollectable(v) && isblack(p) && iswhite(gcvalue(v))) \
|
||||
luaC_barrierback_(L,p); }
|
||||
|
||||
#define luaC_objbarrier(L,p,o) { \
|
||||
if (isblack(p) && iswhite(o)) \
|
||||
luaC_barrier_(L,obj2gco(p),obj2gco(o)); }
|
||||
|
||||
#define luaC_upvalbarrier(L,uv) \
|
||||
{ if (iscollectable((uv)->v) && !upisopen(uv)) \
|
||||
luaC_upvalbarrier_(L,uv); }
|
||||
|
||||
LUAI_FUNC void luaC_fix (lua_State *L, GCObject *o);
|
||||
LUAI_FUNC void luaC_freeallobjects (lua_State *L);
|
||||
LUAI_FUNC void luaC_step (lua_State *L);
|
||||
LUAI_FUNC void luaC_runtilstate (lua_State *L, int statesmask);
|
||||
LUAI_FUNC void luaC_fullgc (lua_State *L, int isemergency);
|
||||
LUAI_FUNC GCObject *luaC_newobj (lua_State *L, int tt, size_t sz);
|
||||
LUAI_FUNC void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v);
|
||||
LUAI_FUNC void luaC_barrierback_ (lua_State *L, Table *o);
|
||||
LUAI_FUNC void luaC_upvalbarrier_ (lua_State *L, UpVal *uv);
|
||||
LUAI_FUNC void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt);
|
||||
LUAI_FUNC void luaC_upvdeccount (lua_State *L, UpVal *uv);
|
||||
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,86 @@
|
||||
/*
|
||||
** $Id: llex.h,v 1.78 2014/10/29 15:38:24 roberto Exp $
|
||||
** Lexical Analyzer
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef llex_h
|
||||
#define llex_h
|
||||
|
||||
#include "lobject.h"
|
||||
#include "lzio.h"
|
||||
|
||||
|
||||
#define FIRST_RESERVED 257
|
||||
|
||||
|
||||
#if !defined(LUA_ENV)
|
||||
#define LUA_ENV "_ENV"
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* WARNING: if you change the order of this enumeration,
|
||||
* grep "ORDER RESERVED"
|
||||
*/
|
||||
enum RESERVED {
|
||||
/* terminal symbols denoted by reserved words */
|
||||
TK_AND = FIRST_RESERVED, TK_BREAK,
|
||||
TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION,
|
||||
TK_GOTO, TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT,
|
||||
TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
|
||||
/* other terminal symbols */
|
||||
TK_IDIV, TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE,
|
||||
TK_SHL, TK_SHR,
|
||||
TK_DBCOLON, TK_EOS,
|
||||
TK_FLT, TK_INT, TK_NAME, TK_STRING
|
||||
};
|
||||
|
||||
/* number of reserved words */
|
||||
#define NUM_RESERVED (cast(int, TK_WHILE-FIRST_RESERVED+1))
|
||||
|
||||
|
||||
typedef union {
|
||||
lua_Number r;
|
||||
lua_Integer i;
|
||||
TString *ts;
|
||||
} SemInfo; /* semantics information */
|
||||
|
||||
|
||||
typedef struct Token {
|
||||
int token;
|
||||
SemInfo seminfo;
|
||||
} Token;
|
||||
|
||||
|
||||
/* state of the lexer plus state of the parser when shared by all
|
||||
functions */
|
||||
typedef struct LexState {
|
||||
int current; /* current character (charint) */
|
||||
int linenumber; /* input line counter */
|
||||
int lastline; /* line of last token 'consumed' */
|
||||
Token t; /* current token */
|
||||
Token lookahead; /* look ahead token */
|
||||
struct FuncState *fs; /* current function (parser) */
|
||||
struct lua_State *L;
|
||||
ZIO *z; /* input stream */
|
||||
Mbuffer *buff; /* buffer for tokens */
|
||||
Table *h; /* to avoid collection/reuse strings */
|
||||
struct Dyndata *dyd; /* dynamic structures used by the parser */
|
||||
TString *source; /* current source name */
|
||||
TString *envn; /* environment variable name */
|
||||
char decpoint; /* locale decimal point */
|
||||
} LexState;
|
||||
|
||||
|
||||
LUAI_FUNC void luaX_init (lua_State *L);
|
||||
LUAI_FUNC void luaX_setinput (lua_State *L, LexState *ls, ZIO *z,
|
||||
TString *source, int firstchar);
|
||||
LUAI_FUNC TString *luaX_newstring (LexState *ls, const char *str, size_t l);
|
||||
LUAI_FUNC void luaX_next (LexState *ls);
|
||||
LUAI_FUNC int luaX_lookahead (LexState *ls);
|
||||
LUAI_FUNC l_noret luaX_syntaxerror (LexState *ls, const char *s);
|
||||
LUAI_FUNC const char *luaX_token2str (LexState *ls, int token);
|
||||
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,242 @@
|
||||
/*
|
||||
** $Id: llimits.h,v 1.125 2014/12/19 13:30:23 roberto Exp $
|
||||
** Limits, basic types, and some other 'installation-dependent' definitions
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef llimits_h
|
||||
#define llimits_h
|
||||
|
||||
|
||||
#include <limits.h>
|
||||
#include <stddef.h>
|
||||
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
/*
|
||||
** 'lu_mem' and 'l_mem' are unsigned/signed integers big enough to count
|
||||
** the total memory used by Lua (in bytes). Usually, 'size_t' and
|
||||
** 'ptrdiff_t' should work, but we use 'long' for 16-bit machines.
|
||||
*/
|
||||
#if defined(LUAI_MEM) /* { external definitions? */
|
||||
typedef LUAI_UMEM lu_mem;
|
||||
typedef LUAI_MEM l_mem;
|
||||
#elif LUAI_BITSINT >= 32 /* }{ */
|
||||
typedef size_t lu_mem;
|
||||
typedef ptrdiff_t l_mem;
|
||||
#else /* 16-bit ints */ /* }{ */
|
||||
typedef unsigned long lu_mem;
|
||||
typedef long l_mem;
|
||||
#endif /* } */
|
||||
|
||||
|
||||
/* chars used as small naturals (so that 'char' is reserved for characters) */
|
||||
typedef unsigned char lu_byte;
|
||||
|
||||
|
||||
/* maximum value for size_t */
|
||||
#define MAX_SIZET ((size_t)(~(size_t)0))
|
||||
|
||||
/* maximum size visible for Lua (must be representable in a lua_Integer */
|
||||
#define MAX_SIZE (sizeof(size_t) < sizeof(lua_Integer) ? MAX_SIZET \
|
||||
: (size_t)(LUA_MAXINTEGER))
|
||||
|
||||
|
||||
#define MAX_LUMEM ((lu_mem)(~(lu_mem)0))
|
||||
|
||||
#define MAX_LMEM ((l_mem)(MAX_LUMEM >> 1))
|
||||
|
||||
|
||||
#define MAX_INT INT_MAX /* maximum value of an int */
|
||||
|
||||
|
||||
/*
|
||||
** conversion of pointer to integer:
|
||||
** this is for hashing only; there is no problem if the integer
|
||||
** cannot hold the whole pointer value
|
||||
*/
|
||||
#define point2int(p) ((unsigned int)((size_t)(p) & UINT_MAX))
|
||||
|
||||
|
||||
|
||||
/* type to ensure maximum alignment */
|
||||
#if defined(LUAI_USER_ALIGNMENT_T)
|
||||
typedef LUAI_USER_ALIGNMENT_T L_Umaxalign;
|
||||
#else
|
||||
typedef union { double u; void *s; lua_Integer i; long l; } L_Umaxalign;
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
/* types of 'usual argument conversions' for lua_Number and lua_Integer */
|
||||
typedef LUAI_UACNUMBER l_uacNumber;
|
||||
typedef LUAI_UACINT l_uacInt;
|
||||
|
||||
|
||||
/* internal assertions for in-house debugging */
|
||||
#if defined(lua_assert)
|
||||
#define check_exp(c,e) (lua_assert(c), (e))
|
||||
/* to avoid problems with conditions too long */
|
||||
#define lua_longassert(c) { if (!(c)) lua_assert(0); }
|
||||
#else
|
||||
#define lua_assert(c) ((void)0)
|
||||
#define check_exp(c,e) (e)
|
||||
#define lua_longassert(c) ((void)0)
|
||||
#endif
|
||||
|
||||
/*
|
||||
** assertion for checking API calls
|
||||
*/
|
||||
#if defined(LUA_USE_APICHECK)
|
||||
#include <assert.h>
|
||||
#define luai_apicheck(e) assert(e)
|
||||
#else
|
||||
#define luai_apicheck(e) lua_assert(e)
|
||||
#endif
|
||||
|
||||
|
||||
#define api_check(e,msg) luai_apicheck((e) && msg)
|
||||
|
||||
|
||||
#if !defined(UNUSED)
|
||||
#define UNUSED(x) ((void)(x)) /* to avoid warnings */
|
||||
#endif
|
||||
|
||||
|
||||
#define cast(t, exp) ((t)(exp))
|
||||
|
||||
#define cast_void(i) cast(void, (i))
|
||||
#define cast_byte(i) cast(lu_byte, (i))
|
||||
#define cast_num(i) cast(lua_Number, (i))
|
||||
#define cast_int(i) cast(int, (i))
|
||||
#define cast_uchar(i) cast(unsigned char, (i))
|
||||
|
||||
|
||||
/* cast a signed lua_Integer to lua_Unsigned */
|
||||
#if !defined(l_castS2U)
|
||||
#define l_castS2U(i) ((lua_Unsigned)(i))
|
||||
#endif
|
||||
|
||||
/*
|
||||
** cast a lua_Unsigned to a signed lua_Integer; this cast is
|
||||
** not strict ISO C, but two-complement architectures should
|
||||
** work fine.
|
||||
*/
|
||||
#if !defined(l_castU2S)
|
||||
#define l_castU2S(i) ((lua_Integer)(i))
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** non-return type
|
||||
*/
|
||||
#if defined(__GNUC__)
|
||||
#define l_noret void __attribute__((noreturn))
|
||||
#elif defined(_MSC_VER) && _MSC_VER >= 1200
|
||||
#define l_noret void __declspec(noreturn)
|
||||
#else
|
||||
#define l_noret void
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** maximum depth for nested C calls and syntactical nested non-terminals
|
||||
** in a program. (Value must fit in an unsigned short int.)
|
||||
*/
|
||||
#if !defined(LUAI_MAXCCALLS)
|
||||
#define LUAI_MAXCCALLS 200
|
||||
#endif
|
||||
|
||||
/*
|
||||
** maximum number of upvalues in a closure (both C and Lua). (Value
|
||||
** must fit in an unsigned char.)
|
||||
*/
|
||||
#define MAXUPVAL UCHAR_MAX
|
||||
|
||||
|
||||
/*
|
||||
** type for virtual-machine instructions;
|
||||
** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
|
||||
*/
|
||||
#if LUAI_BITSINT >= 32
|
||||
typedef unsigned int Instruction;
|
||||
#else
|
||||
typedef unsigned long Instruction;
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
|
||||
/* minimum size for the string table (must be power of 2) */
|
||||
#if !defined(MINSTRTABSIZE)
|
||||
#define MINSTRTABSIZE 64 /* minimum size for "predefined" strings */
|
||||
#endif
|
||||
|
||||
|
||||
/* minimum size for string buffer */
|
||||
#if !defined(LUA_MINBUFFER)
|
||||
#define LUA_MINBUFFER 32
|
||||
#endif
|
||||
|
||||
|
||||
#if !defined(lua_lock)
|
||||
#define lua_lock(L) ((void) 0)
|
||||
#define lua_unlock(L) ((void) 0)
|
||||
#endif
|
||||
|
||||
#if !defined(luai_threadyield)
|
||||
#define luai_threadyield(L) {lua_unlock(L); lua_lock(L);}
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** these macros allow user-specific actions on threads when you defined
|
||||
** LUAI_EXTRASPACE and need to do something extra when a thread is
|
||||
** created/deleted/resumed/yielded.
|
||||
*/
|
||||
#if !defined(luai_userstateopen)
|
||||
#define luai_userstateopen(L) ((void)L)
|
||||
#endif
|
||||
|
||||
#if !defined(luai_userstateclose)
|
||||
#define luai_userstateclose(L) ((void)L)
|
||||
#endif
|
||||
|
||||
#if !defined(luai_userstatethread)
|
||||
#define luai_userstatethread(L,L1) ((void)L)
|
||||
#endif
|
||||
|
||||
#if !defined(luai_userstatefree)
|
||||
#define luai_userstatefree(L,L1) ((void)L)
|
||||
#endif
|
||||
|
||||
#if !defined(luai_userstateresume)
|
||||
#define luai_userstateresume(L,n) ((void)L)
|
||||
#endif
|
||||
|
||||
#if !defined(luai_userstateyield)
|
||||
#define luai_userstateyield(L,n) ((void)L)
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** macro to control inclusion of some hard tests on stack reallocation
|
||||
*/
|
||||
#if !defined(HARDSTACKTESTS)
|
||||
#define condmovestack(L) ((void)0)
|
||||
#else
|
||||
/* realloc stack keeping its size */
|
||||
#define condmovestack(L) luaD_reallocstack((L), (L)->stacksize)
|
||||
#endif
|
||||
|
||||
#if !defined(HARDMEMTESTS)
|
||||
#define condchangemem(L) condmovestack(L)
|
||||
#else
|
||||
#define condchangemem(L) \
|
||||
((void)(!(G(L)->gcrunning) || (luaC_fullgc(L, 0), 1)))
|
||||
#endif
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,69 @@
|
||||
/*
|
||||
** $Id: lmem.h,v 1.43 2014/12/19 17:26:14 roberto Exp $
|
||||
** Interface to Memory Manager
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef lmem_h
|
||||
#define lmem_h
|
||||
|
||||
|
||||
#include <stddef.h>
|
||||
|
||||
#include "llimits.h"
|
||||
#include "lua.h"
|
||||
|
||||
|
||||
/*
|
||||
** This macro reallocs a vector 'b' from 'on' to 'n' elements, where
|
||||
** each element has size 'e'. In case of arithmetic overflow of the
|
||||
** product 'n'*'e', it raises an error (calling 'luaM_toobig'). Because
|
||||
** 'e' is always constant, it avoids the runtime division MAX_SIZET/(e).
|
||||
**
|
||||
** (The macro is somewhat complex to avoid warnings: The 'sizeof'
|
||||
** comparison avoids a runtime comparison when overflow cannot occur.
|
||||
** The compiler should be able to optimize the real test by itself, but
|
||||
** when it does it, it may give a warning about "comparison is always
|
||||
** false due to limited range of data type"; the +1 tricks the compiler,
|
||||
** avoiding this warning but also this optimization.)
|
||||
*/
|
||||
#define luaM_reallocv(L,b,on,n,e) \
|
||||
(((sizeof(n) >= sizeof(size_t) && cast(size_t, (n)) + 1 > MAX_SIZET/(e)) \
|
||||
? luaM_toobig(L) : cast_void(0)) , \
|
||||
luaM_realloc_(L, (b), (on)*(e), (n)*(e)))
|
||||
|
||||
/*
|
||||
** Arrays of chars do not need any test
|
||||
*/
|
||||
#define luaM_reallocvchar(L,b,on,n) \
|
||||
cast(char *, luaM_realloc_(L, (b), (on)*sizeof(char), (n)*sizeof(char)))
|
||||
|
||||
#define luaM_freemem(L, b, s) luaM_realloc_(L, (b), (s), 0)
|
||||
#define luaM_free(L, b) luaM_realloc_(L, (b), sizeof(*(b)), 0)
|
||||
#define luaM_freearray(L, b, n) luaM_realloc_(L, (b), (n)*sizeof(*(b)), 0)
|
||||
|
||||
#define luaM_malloc(L,s) luaM_realloc_(L, NULL, 0, (s))
|
||||
#define luaM_new(L,t) cast(t *, luaM_malloc(L, sizeof(t)))
|
||||
#define luaM_newvector(L,n,t) \
|
||||
cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t)))
|
||||
|
||||
#define luaM_newobject(L,tag,s) luaM_realloc_(L, NULL, tag, (s))
|
||||
|
||||
#define luaM_growvector(L,v,nelems,size,t,limit,e) \
|
||||
if ((nelems)+1 > (size)) \
|
||||
((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e)))
|
||||
|
||||
#define luaM_reallocvector(L, v,oldn,n,t) \
|
||||
((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))
|
||||
|
||||
LUAI_FUNC l_noret luaM_toobig (lua_State *L);
|
||||
|
||||
/* not to be called directly */
|
||||
LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
|
||||
size_t size);
|
||||
LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size,
|
||||
size_t size_elem, int limit,
|
||||
const char *what);
|
||||
|
||||
#endif
|
||||
|
||||
@ -0,0 +1,540 @@
|
||||
/*
|
||||
** $Id: lobject.h,v 2.105 2014/12/19 13:36:32 roberto Exp $
|
||||
** Type definitions for Lua objects
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
|
||||
#ifndef lobject_h
|
||||
#define lobject_h
|
||||
|
||||
|
||||
#include <stdarg.h>
|
||||
|
||||
|
||||
#include "llimits.h"
|
||||
#include "lua.h"
|
||||
|
||||
|
||||
/*
|
||||
** Extra tags for non-values
|
||||
*/
|
||||
#define LUA_TPROTO LUA_NUMTAGS
|
||||
#define LUA_TDEADKEY (LUA_NUMTAGS+1)
|
||||
|
||||
/*
|
||||
** number of all possible tags (including LUA_TNONE but excluding DEADKEY)
|
||||
*/
|
||||
#define LUA_TOTALTAGS (LUA_TPROTO + 2)
|
||||
|
||||
|
||||
/*
|
||||
** tags for Tagged Values have the following use of bits:
|
||||
** bits 0-3: actual tag (a LUA_T* value)
|
||||
** bits 4-5: variant bits
|
||||
** bit 6: whether value is collectable
|
||||
*/
|
||||
|
||||
#define VARBITS (3 << 4)
|
||||
|
||||
|
||||
/*
|
||||
** LUA_TFUNCTION variants:
|
||||
** 0 - Lua function
|
||||
** 1 - light C function
|
||||
** 2 - regular C function (closure)
|
||||
*/
|
||||
|
||||
/* Variant tags for functions */
|
||||
#define LUA_TLCL (LUA_TFUNCTION | (0 << 4)) /* Lua closure */
|
||||
#define LUA_TLCF (LUA_TFUNCTION | (1 << 4)) /* light C function */
|
||||
#define LUA_TCCL (LUA_TFUNCTION | (2 << 4)) /* C closure */
|
||||
|
||||
|
||||
/* Variant tags for strings */
|
||||
#define LUA_TSHRSTR (LUA_TSTRING | (0 << 4)) /* short strings */
|
||||
#define LUA_TLNGSTR (LUA_TSTRING | (1 << 4)) /* long strings */
|
||||
|
||||
|
||||
/* Variant tags for numbers */
|
||||
#define LUA_TNUMFLT (LUA_TNUMBER | (0 << 4)) /* float numbers */
|
||||
#define LUA_TNUMINT (LUA_TNUMBER | (1 << 4)) /* integer numbers */
|
||||
|
||||
|
||||
/* Bit mark for collectable types */
|
||||
#define BIT_ISCOLLECTABLE (1 << 6)
|
||||
|
||||
/* mark a tag as collectable */
|
||||
#define ctb(t) ((t) | BIT_ISCOLLECTABLE)
|
||||
|
||||
|
||||
/*
|
||||
** Common type for all collectable objects
|
||||
*/
|
||||
typedef struct GCObject GCObject;
|
||||
|
||||
|
||||
/*
|
||||
** Common Header for all collectable objects (in macro form, to be
|
||||
** included in other objects)
|
||||
*/
|
||||
#define CommonHeader GCObject *next; lu_byte tt; lu_byte marked
|
||||
|
||||
|
||||
/*
|
||||
** Common type has only the common header
|
||||
*/
|
||||
struct GCObject {
|
||||
CommonHeader;
|
||||
};
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** Union of all Lua values
|
||||
*/
|
||||
typedef union Value Value;
|
||||
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** Tagged Values. This is the basic representation of values in Lua,
|
||||
** an actual value plus a tag with its type.
|
||||
*/
|
||||
|
||||
#define TValuefields Value value_; int tt_
|
||||
|
||||
typedef struct lua_TValue TValue;
|
||||
|
||||
|
||||
/* macro defining a nil value */
|
||||
#define NILCONSTANT {NULL}, LUA_TNIL
|
||||
|
||||
|
||||
#define val_(o) ((o)->value_)
|
||||
|
||||
|
||||
/* raw type tag of a TValue */
|
||||
#define rttype(o) ((o)->tt_)
|
||||
|
||||
/* tag with no variants (bits 0-3) */
|
||||
#define novariant(x) ((x) & 0x0F)
|
||||
|
||||
/* type tag of a TValue (bits 0-3 for tags + variant bits 4-5) */
|
||||
#define ttype(o) (rttype(o) & 0x3F)
|
||||
|
||||
/* type tag of a TValue with no variants (bits 0-3) */
|
||||
#define ttnov(o) (novariant(rttype(o)))
|
||||
|
||||
|
||||
/* Macros to test type */
|
||||
#define checktag(o,t) (rttype(o) == (t))
|
||||
#define checktype(o,t) (ttnov(o) == (t))
|
||||
#define ttisnumber(o) checktype((o), LUA_TNUMBER)
|
||||
#define ttisfloat(o) checktag((o), LUA_TNUMFLT)
|
||||
#define ttisinteger(o) checktag((o), LUA_TNUMINT)
|
||||
#define ttisnil(o) checktag((o), LUA_TNIL)
|
||||
#define ttisboolean(o) checktag((o), LUA_TBOOLEAN)
|
||||
#define ttislightuserdata(o) checktag((o), LUA_TLIGHTUSERDATA)
|
||||
#define ttisstring(o) checktype((o), LUA_TSTRING)
|
||||
#define ttisshrstring(o) checktag((o), ctb(LUA_TSHRSTR))
|
||||
#define ttislngstring(o) checktag((o), ctb(LUA_TLNGSTR))
|
||||
#define ttistable(o) checktag((o), ctb(LUA_TTABLE))
|
||||
#define ttisfunction(o) checktype(o, LUA_TFUNCTION)
|
||||
#define ttisclosure(o) ((rttype(o) & 0x1F) == LUA_TFUNCTION)
|
||||
#define ttisCclosure(o) checktag((o), ctb(LUA_TCCL))
|
||||
#define ttisLclosure(o) checktag((o), ctb(LUA_TLCL))
|
||||
#define ttislcf(o) checktag((o), LUA_TLCF)
|
||||
#define ttisfulluserdata(o) checktag((o), ctb(LUA_TUSERDATA))
|
||||
#define ttisthread(o) checktag((o), ctb(LUA_TTHREAD))
|
||||
#define ttisdeadkey(o) checktag((o), LUA_TDEADKEY)
|
||||
|
||||
|
||||
/* Macros to access values */
|
||||
#define ivalue(o) check_exp(ttisinteger(o), val_(o).i)
|
||||
#define fltvalue(o) check_exp(ttisfloat(o), val_(o).n)
|
||||
#define nvalue(o) check_exp(ttisnumber(o), \
|
||||
(ttisinteger(o) ? cast_num(ivalue(o)) : fltvalue(o)))
|
||||
#define gcvalue(o) check_exp(iscollectable(o), val_(o).gc)
|
||||
#define pvalue(o) check_exp(ttislightuserdata(o), val_(o).p)
|
||||
#define tsvalue(o) check_exp(ttisstring(o), gco2ts(val_(o).gc))
|
||||
#define uvalue(o) check_exp(ttisfulluserdata(o), gco2u(val_(o).gc))
|
||||
#define clvalue(o) check_exp(ttisclosure(o), gco2cl(val_(o).gc))
|
||||
#define clLvalue(o) check_exp(ttisLclosure(o), gco2lcl(val_(o).gc))
|
||||
#define clCvalue(o) check_exp(ttisCclosure(o), gco2ccl(val_(o).gc))
|
||||
#define fvalue(o) check_exp(ttislcf(o), val_(o).f)
|
||||
#define hvalue(o) check_exp(ttistable(o), gco2t(val_(o).gc))
|
||||
#define bvalue(o) check_exp(ttisboolean(o), val_(o).b)
|
||||
#define thvalue(o) check_exp(ttisthread(o), gco2th(val_(o).gc))
|
||||
/* a dead value may get the 'gc' field, but cannot access its contents */
|
||||
#define deadvalue(o) check_exp(ttisdeadkey(o), cast(void *, val_(o).gc))
|
||||
|
||||
#define l_isfalse(o) (ttisnil(o) || (ttisboolean(o) && bvalue(o) == 0))
|
||||
|
||||
|
||||
#define iscollectable(o) (rttype(o) & BIT_ISCOLLECTABLE)
|
||||
|
||||
|
||||
/* Macros for internal tests */
|
||||
#define righttt(obj) (ttype(obj) == gcvalue(obj)->tt)
|
||||
|
||||
#define checkliveness(g,obj) \
|
||||
lua_longassert(!iscollectable(obj) || \
|
||||
(righttt(obj) && !isdead(g,gcvalue(obj))))
|
||||
|
||||
|
||||
/* Macros to set values */
|
||||
#define settt_(o,t) ((o)->tt_=(t))
|
||||
|
||||
#define setfltvalue(obj,x) \
|
||||
{ TValue *io=(obj); val_(io).n=(x); settt_(io, LUA_TNUMFLT); }
|
||||
|
||||
#define setivalue(obj,x) \
|
||||
{ TValue *io=(obj); val_(io).i=(x); settt_(io, LUA_TNUMINT); }
|
||||
|
||||
#define setnilvalue(obj) settt_(obj, LUA_TNIL)
|
||||
|
||||
#define setfvalue(obj,x) \
|
||||
{ TValue *io=(obj); val_(io).f=(x); settt_(io, LUA_TLCF); }
|
||||
|
||||
#define setpvalue(obj,x) \
|
||||
{ TValue *io=(obj); val_(io).p=(x); settt_(io, LUA_TLIGHTUSERDATA); }
|
||||
|
||||
#define setbvalue(obj,x) \
|
||||
{ TValue *io=(obj); val_(io).b=(x); settt_(io, LUA_TBOOLEAN); }
|
||||
|
||||
#define setgcovalue(L,obj,x) \
|
||||
{ TValue *io = (obj); GCObject *i_g=(x); \
|
||||
val_(io).gc = i_g; settt_(io, ctb(i_g->tt)); }
|
||||
|
||||
#define setsvalue(L,obj,x) \
|
||||
{ TValue *io = (obj); TString *x_ = (x); \
|
||||
val_(io).gc = obj2gco(x_); settt_(io, ctb(x_->tt)); \
|
||||
checkliveness(G(L),io); }
|
||||
|
||||
#define setuvalue(L,obj,x) \
|
||||
{ TValue *io = (obj); Udata *x_ = (x); \
|
||||
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TUSERDATA)); \
|
||||
checkliveness(G(L),io); }
|
||||
|
||||
#define setthvalue(L,obj,x) \
|
||||
{ TValue *io = (obj); lua_State *x_ = (x); \
|
||||
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TTHREAD)); \
|
||||
checkliveness(G(L),io); }
|
||||
|
||||
#define setclLvalue(L,obj,x) \
|
||||
{ TValue *io = (obj); LClosure *x_ = (x); \
|
||||
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TLCL)); \
|
||||
checkliveness(G(L),io); }
|
||||
|
||||
#define setclCvalue(L,obj,x) \
|
||||
{ TValue *io = (obj); CClosure *x_ = (x); \
|
||||
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TCCL)); \
|
||||
checkliveness(G(L),io); }
|
||||
|
||||
#define sethvalue(L,obj,x) \
|
||||
{ TValue *io = (obj); Table *x_ = (x); \
|
||||
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TTABLE)); \
|
||||
checkliveness(G(L),io); }
|
||||
|
||||
#define setdeadvalue(obj) settt_(obj, LUA_TDEADKEY)
|
||||
|
||||
|
||||
|
||||
#define setobj(L,obj1,obj2) \
|
||||
{ TValue *io1=(obj1); *io1 = *(obj2); \
|
||||
(void)L; checkliveness(G(L),io1); }
|
||||
|
||||
|
||||
/*
|
||||
** different types of assignments, according to destination
|
||||
*/
|
||||
|
||||
/* from stack to (same) stack */
|
||||
#define setobjs2s setobj
|
||||
/* to stack (not from same stack) */
|
||||
#define setobj2s setobj
|
||||
#define setsvalue2s setsvalue
|
||||
#define sethvalue2s sethvalue
|
||||
#define setptvalue2s setptvalue
|
||||
/* from table to same table */
|
||||
#define setobjt2t setobj
|
||||
/* to table */
|
||||
#define setobj2t setobj
|
||||
/* to new object */
|
||||
#define setobj2n setobj
|
||||
#define setsvalue2n setsvalue
|
||||
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** types and prototypes
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
|
||||
union Value {
|
||||
GCObject *gc; /* collectable objects */
|
||||
void *p; /* light userdata */
|
||||
int b; /* booleans */
|
||||
lua_CFunction f; /* light C functions */
|
||||
lua_Integer i; /* integer numbers */
|
||||
lua_Number n; /* float numbers */
|
||||
};
|
||||
|
||||
|
||||
struct lua_TValue {
|
||||
TValuefields;
|
||||
};
|
||||
|
||||
|
||||
typedef TValue *StkId; /* index to stack elements */
|
||||
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** Header for string value; string bytes follow the end of this structure
|
||||
** (aligned according to 'UTString'; see next).
|
||||
*/
|
||||
typedef struct TString {
|
||||
CommonHeader;
|
||||
lu_byte extra; /* reserved words for short strings; "has hash" for longs */
|
||||
unsigned int hash;
|
||||
size_t len; /* number of characters in string */
|
||||
struct TString *hnext; /* linked list for hash table */
|
||||
} TString;
|
||||
|
||||
|
||||
/*
|
||||
** Ensures that address after this type is always fully aligned.
|
||||
*/
|
||||
typedef union UTString {
|
||||
L_Umaxalign dummy; /* ensures maximum alignment for strings */
|
||||
TString tsv;
|
||||
} UTString;
|
||||
|
||||
|
||||
/*
|
||||
** Get the actual string (array of bytes) from a 'TString'.
|
||||
** (Access to 'extra' ensures that value is really a 'TString'.)
|
||||
*/
|
||||
#define getaddrstr(ts) (cast(char *, (ts)) + sizeof(UTString))
|
||||
#define getstr(ts) \
|
||||
check_exp(sizeof((ts)->extra), cast(const char*, getaddrstr(ts)))
|
||||
|
||||
/* get the actual string (array of bytes) from a Lua value */
|
||||
#define svalue(o) getstr(tsvalue(o))
|
||||
|
||||
|
||||
/*
|
||||
** Header for userdata; memory area follows the end of this structure
|
||||
** (aligned according to 'UUdata'; see next).
|
||||
*/
|
||||
typedef struct Udata {
|
||||
CommonHeader;
|
||||
lu_byte ttuv_; /* user value's tag */
|
||||
struct Table *metatable;
|
||||
size_t len; /* number of bytes */
|
||||
union Value user_; /* user value */
|
||||
} Udata;
|
||||
|
||||
|
||||
/*
|
||||
** Ensures that address after this type is always fully aligned.
|
||||
*/
|
||||
typedef union UUdata {
|
||||
L_Umaxalign dummy; /* ensures maximum alignment for 'local' udata */
|
||||
Udata uv;
|
||||
} UUdata;
|
||||
|
||||
|
||||
/*
|
||||
** Get the address of memory block inside 'Udata'.
|
||||
** (Access to 'ttuv_' ensures that value is really a 'Udata'.)
|
||||
*/
|
||||
#define getudatamem(u) \
|
||||
check_exp(sizeof((u)->ttuv_), (cast(char*, (u)) + sizeof(UUdata)))
|
||||
|
||||
#define setuservalue(L,u,o) \
|
||||
{ const TValue *io=(o); Udata *iu = (u); \
|
||||
iu->user_ = io->value_; iu->ttuv_ = io->tt_; \
|
||||
checkliveness(G(L),io); }
|
||||
|
||||
|
||||
#define getuservalue(L,u,o) \
|
||||
{ TValue *io=(o); const Udata *iu = (u); \
|
||||
io->value_ = iu->user_; io->tt_ = iu->ttuv_; \
|
||||
checkliveness(G(L),io); }
|
||||
|
||||
|
||||
/*
|
||||
** Description of an upvalue for function prototypes
|
||||
*/
|
||||
typedef struct Upvaldesc {
|
||||
TString *name; /* upvalue name (for debug information) */
|
||||
lu_byte instack; /* whether it is in stack */
|
||||
lu_byte idx; /* index of upvalue (in stack or in outer function's list) */
|
||||
} Upvaldesc;
|
||||
|
||||
|
||||
/*
|
||||
** Description of a local variable for function prototypes
|
||||
** (used for debug information)
|
||||
*/
|
||||
typedef struct LocVar {
|
||||
TString *varname;
|
||||
int startpc; /* first point where variable is active */
|
||||
int endpc; /* first point where variable is dead */
|
||||
} LocVar;
|
||||
|
||||
|
||||
/*
|
||||
** Function Prototypes
|
||||
*/
|
||||
typedef struct Proto {
|
||||
CommonHeader;
|
||||
lu_byte numparams; /* number of fixed parameters */
|
||||
lu_byte is_vararg;
|
||||
lu_byte maxstacksize; /* maximum stack used by this function */
|
||||
int sizeupvalues; /* size of 'upvalues' */
|
||||
int sizek; /* size of 'k' */
|
||||
int sizecode;
|
||||
int sizelineinfo;
|
||||
int sizep; /* size of 'p' */
|
||||
int sizelocvars;
|
||||
int linedefined;
|
||||
int lastlinedefined;
|
||||
TValue *k; /* constants used by the function */
|
||||
Instruction *code;
|
||||
struct Proto **p; /* functions defined inside the function */
|
||||
int *lineinfo; /* map from opcodes to source lines (debug information) */
|
||||
LocVar *locvars; /* information about local variables (debug information) */
|
||||
Upvaldesc *upvalues; /* upvalue information */
|
||||
struct LClosure *cache; /* last created closure with this prototype */
|
||||
TString *source; /* used for debug information */
|
||||
GCObject *gclist;
|
||||
} Proto;
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** Lua Upvalues
|
||||
*/
|
||||
typedef struct UpVal UpVal;
|
||||
|
||||
|
||||
/*
|
||||
** Closures
|
||||
*/
|
||||
|
||||
#define ClosureHeader \
|
||||
CommonHeader; lu_byte nupvalues; GCObject *gclist
|
||||
|
||||
typedef struct CClosure {
|
||||
ClosureHeader;
|
||||
lua_CFunction f;
|
||||
TValue upvalue[1]; /* list of upvalues */
|
||||
} CClosure;
|
||||
|
||||
|
||||
typedef struct LClosure {
|
||||
ClosureHeader;
|
||||
struct Proto *p;
|
||||
UpVal *upvals[1]; /* list of upvalues */
|
||||
} LClosure;
|
||||
|
||||
|
||||
typedef union Closure {
|
||||
CClosure c;
|
||||
LClosure l;
|
||||
} Closure;
|
||||
|
||||
|
||||
#define isLfunction(o) ttisLclosure(o)
|
||||
|
||||
#define getproto(o) (clLvalue(o)->p)
|
||||
|
||||
|
||||
/*
|
||||
** Tables
|
||||
*/
|
||||
|
||||
typedef union TKey {
|
||||
struct {
|
||||
TValuefields;
|
||||
int next; /* for chaining (offset for next node) */
|
||||
} nk;
|
||||
TValue tvk;
|
||||
} TKey;
|
||||
|
||||
|
||||
/* copy a value into a key without messing up field 'next' */
|
||||
#define setkey(L,key,obj) \
|
||||
{ TKey *k_=(key); const TValue *io_=(obj); \
|
||||
k_->nk.value_ = io_->value_; k_->nk.tt_ = io_->tt_; \
|
||||
(void)L; checkliveness(G(L),io_); }
|
||||
|
||||
|
||||
typedef struct Node {
|
||||
TValue i_val;
|
||||
TKey i_key;
|
||||
} Node;
|
||||
|
||||
|
||||
typedef struct Table {
|
||||
CommonHeader;
|
||||
lu_byte flags; /* 1<<p means tagmethod(p) is not present */
|
||||
lu_byte lsizenode; /* log2 of size of 'node' array */
|
||||
unsigned int sizearray; /* size of 'array' array */
|
||||
TValue *array; /* array part */
|
||||
Node *node;
|
||||
Node *lastfree; /* any free position is before this position */
|
||||
struct Table *metatable;
|
||||
GCObject *gclist;
|
||||
} Table;
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** 'module' operation for hashing (size is always a power of 2)
|
||||
*/
|
||||
#define lmod(s,size) \
|
||||
(check_exp((size&(size-1))==0, (cast(int, (s) & ((size)-1)))))
|
||||
|
||||
|
||||
#define twoto(x) (1<<(x))
|
||||
#define sizenode(t) (twoto((t)->lsizenode))
|
||||
|
||||
|
||||
/*
|
||||
** (address of) a fixed nil value
|
||||
*/
|
||||
#define luaO_nilobject (&luaO_nilobject_)
|
||||
|
||||
|
||||
LUAI_DDEC const TValue luaO_nilobject_;
|
||||
|
||||
/* size of buffer for 'luaO_utf8esc' function */
|
||||
#define UTF8BUFFSZ 8
|
||||
|
||||
LUAI_FUNC int luaO_int2fb (unsigned int x);
|
||||
LUAI_FUNC int luaO_fb2int (int x);
|
||||
LUAI_FUNC int luaO_utf8esc (char *buff, unsigned long x);
|
||||
LUAI_FUNC int luaO_ceillog2 (unsigned int x);
|
||||
LUAI_FUNC void luaO_arith (lua_State *L, int op, const TValue *p1,
|
||||
const TValue *p2, TValue *res);
|
||||
LUAI_FUNC size_t luaO_str2num (const char *s, TValue *o);
|
||||
LUAI_FUNC int luaO_hexavalue (int c);
|
||||
LUAI_FUNC void luaO_tostring (lua_State *L, StkId obj);
|
||||
LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt,
|
||||
va_list argp);
|
||||
LUAI_FUNC const char *luaO_pushfstring (lua_State *L, const char *fmt, ...);
|
||||
LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t len);
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
@ -0,0 +1,295 @@
|
||||
/*
|
||||
** $Id: lopcodes.h,v 1.148 2014/10/25 11:50:46 roberto Exp $
|
||||
** Opcodes for Lua virtual machine
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef lopcodes_h
|
||||
#define lopcodes_h
|
||||
|
||||
#include "llimits.h"
|
||||
|
||||
|
||||
/*===========================================================================
|
||||
We assume that instructions are unsigned numbers.
|
||||
All instructions have an opcode in the first 6 bits.
|
||||
Instructions can have the following fields:
|
||||
'A' : 8 bits
|
||||
'B' : 9 bits
|
||||
'C' : 9 bits
|
||||
'Ax' : 26 bits ('A', 'B', and 'C' together)
|
||||
'Bx' : 18 bits ('B' and 'C' together)
|
||||
'sBx' : signed Bx
|
||||
|
||||
A signed argument is represented in excess K; that is, the number
|
||||
value is the unsigned value minus K. K is exactly the maximum value
|
||||
for that argument (so that -max is represented by 0, and +max is
|
||||
represented by 2*max), which is half the maximum for the corresponding
|
||||
unsigned argument.
|
||||
===========================================================================*/
|
||||
|
||||
|
||||
enum OpMode {iABC, iABx, iAsBx, iAx}; /* basic instruction format */
|
||||
|
||||
|
||||
/*
|
||||
** size and position of opcode arguments.
|
||||
*/
|
||||
#define SIZE_C 9
|
||||
#define SIZE_B 9
|
||||
#define SIZE_Bx (SIZE_C + SIZE_B)
|
||||
#define SIZE_A 8
|
||||
#define SIZE_Ax (SIZE_C + SIZE_B + SIZE_A)
|
||||
|
||||
#define SIZE_OP 6
|
||||
|
||||
#define POS_OP 0
|
||||
#define POS_A (POS_OP + SIZE_OP)
|
||||
#define POS_C (POS_A + SIZE_A)
|
||||
#define POS_B (POS_C + SIZE_C)
|
||||
#define POS_Bx POS_C
|
||||
#define POS_Ax POS_A
|
||||
|
||||
|
||||
/*
|
||||
** limits for opcode arguments.
|
||||
** we use (signed) int to manipulate most arguments,
|
||||
** so they must fit in LUAI_BITSINT-1 bits (-1 for sign)
|
||||
*/
|
||||
#if SIZE_Bx < LUAI_BITSINT-1
|
||||
#define MAXARG_Bx ((1<<SIZE_Bx)-1)
|
||||
#define MAXARG_sBx (MAXARG_Bx>>1) /* 'sBx' is signed */
|
||||
#else
|
||||
#define MAXARG_Bx MAX_INT
|
||||
#define MAXARG_sBx MAX_INT
|
||||
#endif
|
||||
|
||||
#if SIZE_Ax < LUAI_BITSINT-1
|
||||
#define MAXARG_Ax ((1<<SIZE_Ax)-1)
|
||||
#else
|
||||
#define MAXARG_Ax MAX_INT
|
||||
#endif
|
||||
|
||||
|
||||
#define MAXARG_A ((1<<SIZE_A)-1)
|
||||
#define MAXARG_B ((1<<SIZE_B)-1)
|
||||
#define MAXARG_C ((1<<SIZE_C)-1)
|
||||
|
||||
|
||||
/* creates a mask with 'n' 1 bits at position 'p' */
|
||||
#define MASK1(n,p) ((~((~(Instruction)0)<<(n)))<<(p))
|
||||
|
||||
/* creates a mask with 'n' 0 bits at position 'p' */
|
||||
#define MASK0(n,p) (~MASK1(n,p))
|
||||
|
||||
/*
|
||||
** the following macros help to manipulate instructions
|
||||
*/
|
||||
|
||||
#define GET_OPCODE(i) (cast(OpCode, ((i)>>POS_OP) & MASK1(SIZE_OP,0)))
|
||||
#define SET_OPCODE(i,o) ((i) = (((i)&MASK0(SIZE_OP,POS_OP)) | \
|
||||
((cast(Instruction, o)<<POS_OP)&MASK1(SIZE_OP,POS_OP))))
|
||||
|
||||
#define getarg(i,pos,size) (cast(int, ((i)>>pos) & MASK1(size,0)))
|
||||
#define setarg(i,v,pos,size) ((i) = (((i)&MASK0(size,pos)) | \
|
||||
((cast(Instruction, v)<<pos)&MASK1(size,pos))))
|
||||
|
||||
#define GETARG_A(i) getarg(i, POS_A, SIZE_A)
|
||||
#define SETARG_A(i,v) setarg(i, v, POS_A, SIZE_A)
|
||||
|
||||
#define GETARG_B(i) getarg(i, POS_B, SIZE_B)
|
||||
#define SETARG_B(i,v) setarg(i, v, POS_B, SIZE_B)
|
||||
|
||||
#define GETARG_C(i) getarg(i, POS_C, SIZE_C)
|
||||
#define SETARG_C(i,v) setarg(i, v, POS_C, SIZE_C)
|
||||
|
||||
#define GETARG_Bx(i) getarg(i, POS_Bx, SIZE_Bx)
|
||||
#define SETARG_Bx(i,v) setarg(i, v, POS_Bx, SIZE_Bx)
|
||||
|
||||
#define GETARG_Ax(i) getarg(i, POS_Ax, SIZE_Ax)
|
||||
#define SETARG_Ax(i,v) setarg(i, v, POS_Ax, SIZE_Ax)
|
||||
|
||||
#define GETARG_sBx(i) (GETARG_Bx(i)-MAXARG_sBx)
|
||||
#define SETARG_sBx(i,b) SETARG_Bx((i),cast(unsigned int, (b)+MAXARG_sBx))
|
||||
|
||||
|
||||
#define CREATE_ABC(o,a,b,c) ((cast(Instruction, o)<<POS_OP) \
|
||||
| (cast(Instruction, a)<<POS_A) \
|
||||
| (cast(Instruction, b)<<POS_B) \
|
||||
| (cast(Instruction, c)<<POS_C))
|
||||
|
||||
#define CREATE_ABx(o,a,bc) ((cast(Instruction, o)<<POS_OP) \
|
||||
| (cast(Instruction, a)<<POS_A) \
|
||||
| (cast(Instruction, bc)<<POS_Bx))
|
||||
|
||||
#define CREATE_Ax(o,a) ((cast(Instruction, o)<<POS_OP) \
|
||||
| (cast(Instruction, a)<<POS_Ax))
|
||||
|
||||
|
||||
/*
|
||||
** Macros to operate RK indices
|
||||
*/
|
||||
|
||||
/* this bit 1 means constant (0 means register) */
|
||||
#define BITRK (1 << (SIZE_B - 1))
|
||||
|
||||
/* test whether value is a constant */
|
||||
#define ISK(x) ((x) & BITRK)
|
||||
|
||||
/* gets the index of the constant */
|
||||
#define INDEXK(r) ((int)(r) & ~BITRK)
|
||||
|
||||
#define MAXINDEXRK (BITRK - 1)
|
||||
|
||||
/* code a constant index as a RK value */
|
||||
#define RKASK(x) ((x) | BITRK)
|
||||
|
||||
|
||||
/*
|
||||
** invalid register that fits in 8 bits
|
||||
*/
|
||||
#define NO_REG MAXARG_A
|
||||
|
||||
|
||||
/*
|
||||
** R(x) - register
|
||||
** Kst(x) - constant (in constant table)
|
||||
** RK(x) == if ISK(x) then Kst(INDEXK(x)) else R(x)
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
** grep "ORDER OP" if you change these enums
|
||||
*/
|
||||
|
||||
typedef enum {
|
||||
/*----------------------------------------------------------------------
|
||||
name args description
|
||||
------------------------------------------------------------------------*/
|
||||
OP_MOVE,/* A B R(A) := R(B) */
|
||||
OP_LOADK,/* A Bx R(A) := Kst(Bx) */
|
||||
OP_LOADKX,/* A R(A) := Kst(extra arg) */
|
||||
OP_LOADBOOL,/* A B C R(A) := (Bool)B; if (C) pc++ */
|
||||
OP_LOADNIL,/* A B R(A), R(A+1), ..., R(A+B) := nil */
|
||||
OP_GETUPVAL,/* A B R(A) := UpValue[B] */
|
||||
|
||||
OP_GETTABUP,/* A B C R(A) := UpValue[B][RK(C)] */
|
||||
OP_GETTABLE,/* A B C R(A) := R(B)[RK(C)] */
|
||||
|
||||
OP_SETTABUP,/* A B C UpValue[A][RK(B)] := RK(C) */
|
||||
OP_SETUPVAL,/* A B UpValue[B] := R(A) */
|
||||
OP_SETTABLE,/* A B C R(A)[RK(B)] := RK(C) */
|
||||
|
||||
OP_NEWTABLE,/* A B C R(A) := {} (size = B,C) */
|
||||
|
||||
OP_SELF,/* A B C R(A+1) := R(B); R(A) := R(B)[RK(C)] */
|
||||
|
||||
OP_ADD,/* A B C R(A) := RK(B) + RK(C) */
|
||||
OP_SUB,/* A B C R(A) := RK(B) - RK(C) */
|
||||
OP_MUL,/* A B C R(A) := RK(B) * RK(C) */
|
||||
OP_MOD,/* A B C R(A) := RK(B) % RK(C) */
|
||||
OP_POW,/* A B C R(A) := RK(B) ^ RK(C) */
|
||||
OP_DIV,/* A B C R(A) := RK(B) / RK(C) */
|
||||
OP_IDIV,/* A B C R(A) := RK(B) // RK(C) */
|
||||
OP_BAND,/* A B C R(A) := RK(B) & RK(C) */
|
||||
OP_BOR,/* A B C R(A) := RK(B) | RK(C) */
|
||||
OP_BXOR,/* A B C R(A) := RK(B) ~ RK(C) */
|
||||
OP_SHL,/* A B C R(A) := RK(B) << RK(C) */
|
||||
OP_SHR,/* A B C R(A) := RK(B) >> RK(C) */
|
||||
OP_UNM,/* A B R(A) := -R(B) */
|
||||
OP_BNOT,/* A B R(A) := ~R(B) */
|
||||
OP_NOT,/* A B R(A) := not R(B) */
|
||||
OP_LEN,/* A B R(A) := length of R(B) */
|
||||
|
||||
OP_CONCAT,/* A B C R(A) := R(B).. ... ..R(C) */
|
||||
|
||||
OP_JMP,/* A sBx pc+=sBx; if (A) close all upvalues >= R(A - 1) */
|
||||
OP_EQ,/* A B C if ((RK(B) == RK(C)) ~= A) then pc++ */
|
||||
OP_LT,/* A B C if ((RK(B) < RK(C)) ~= A) then pc++ */
|
||||
OP_LE,/* A B C if ((RK(B) <= RK(C)) ~= A) then pc++ */
|
||||
|
||||
OP_TEST,/* A C if not (R(A) <=> C) then pc++ */
|
||||
OP_TESTSET,/* A B C if (R(B) <=> C) then R(A) := R(B) else pc++ */
|
||||
|
||||
OP_CALL,/* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */
|
||||
OP_TAILCALL,/* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */
|
||||
OP_RETURN,/* A B return R(A), ... ,R(A+B-2) (see note) */
|
||||
|
||||
OP_FORLOOP,/* A sBx R(A)+=R(A+2);
|
||||
if R(A) <?= R(A+1) then { pc+=sBx; R(A+3)=R(A) }*/
|
||||
OP_FORPREP,/* A sBx R(A)-=R(A+2); pc+=sBx */
|
||||
|
||||
OP_TFORCALL,/* A C R(A+3), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2)); */
|
||||
OP_TFORLOOP,/* A sBx if R(A+1) ~= nil then { R(A)=R(A+1); pc += sBx }*/
|
||||
|
||||
OP_SETLIST,/* A B C R(A)[(C-1)*FPF+i] := R(A+i), 1 <= i <= B */
|
||||
|
||||
OP_CLOSURE,/* A Bx R(A) := closure(KPROTO[Bx]) */
|
||||
|
||||
OP_VARARG,/* A B R(A), R(A+1), ..., R(A+B-2) = vararg */
|
||||
|
||||
OP_EXTRAARG/* Ax extra (larger) argument for previous opcode */
|
||||
} OpCode;
|
||||
|
||||
|
||||
#define NUM_OPCODES (cast(int, OP_EXTRAARG) + 1)
|
||||
|
||||
|
||||
|
||||
/*===========================================================================
|
||||
Notes:
|
||||
(*) In OP_CALL, if (B == 0) then B = top. If (C == 0), then 'top' is
|
||||
set to last_result+1, so next open instruction (OP_CALL, OP_RETURN,
|
||||
OP_SETLIST) may use 'top'.
|
||||
|
||||
(*) In OP_VARARG, if (B == 0) then use actual number of varargs and
|
||||
set top (like in OP_CALL with C == 0).
|
||||
|
||||
(*) In OP_RETURN, if (B == 0) then return up to 'top'.
|
||||
|
||||
(*) In OP_SETLIST, if (B == 0) then B = 'top'; if (C == 0) then next
|
||||
'instruction' is EXTRAARG(real C).
|
||||
|
||||
(*) In OP_LOADKX, the next 'instruction' is always EXTRAARG.
|
||||
|
||||
(*) For comparisons, A specifies what condition the test should accept
|
||||
(true or false).
|
||||
|
||||
(*) All 'skips' (pc++) assume that next instruction is a jump.
|
||||
|
||||
===========================================================================*/
|
||||
|
||||
|
||||
/*
|
||||
** masks for instruction properties. The format is:
|
||||
** bits 0-1: op mode
|
||||
** bits 2-3: C arg mode
|
||||
** bits 4-5: B arg mode
|
||||
** bit 6: instruction set register A
|
||||
** bit 7: operator is a test (next instruction must be a jump)
|
||||
*/
|
||||
|
||||
enum OpArgMask {
|
||||
OpArgN, /* argument is not used */
|
||||
OpArgU, /* argument is used */
|
||||
OpArgR, /* argument is a register or a jump offset */
|
||||
OpArgK /* argument is a constant or register/constant */
|
||||
};
|
||||
|
||||
LUAI_DDEC const lu_byte luaP_opmodes[NUM_OPCODES];
|
||||
|
||||
#define getOpMode(m) (cast(enum OpMode, luaP_opmodes[m] & 3))
|
||||
#define getBMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 4) & 3))
|
||||
#define getCMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 2) & 3))
|
||||
#define testAMode(m) (luaP_opmodes[m] & (1 << 6))
|
||||
#define testTMode(m) (luaP_opmodes[m] & (1 << 7))
|
||||
|
||||
|
||||
LUAI_DDEC const char *const luaP_opnames[NUM_OPCODES+1]; /* opcode names */
|
||||
|
||||
|
||||
/* number of list items to accumulate before a SETLIST instruction */
|
||||
#define LFIELDS_PER_FLUSH 50
|
||||
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,120 @@
|
||||
/*
|
||||
** $Id: lparser.h,v 1.74 2014/10/25 11:50:46 roberto Exp $
|
||||
** Lua Parser
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef lparser_h
|
||||
#define lparser_h
|
||||
|
||||
#include "llimits.h"
|
||||
#include "lobject.h"
|
||||
#include "lzio.h"
|
||||
|
||||
|
||||
/*
|
||||
** Expression descriptor
|
||||
*/
|
||||
|
||||
typedef enum {
|
||||
VVOID, /* no value */
|
||||
VNIL,
|
||||
VTRUE,
|
||||
VFALSE,
|
||||
VK, /* info = index of constant in 'k' */
|
||||
VKFLT, /* nval = numerical float value */
|
||||
VKINT, /* nval = numerical integer value */
|
||||
VNONRELOC, /* info = result register */
|
||||
VLOCAL, /* info = local register */
|
||||
VUPVAL, /* info = index of upvalue in 'upvalues' */
|
||||
VINDEXED, /* t = table register/upvalue; idx = index R/K */
|
||||
VJMP, /* info = instruction pc */
|
||||
VRELOCABLE, /* info = instruction pc */
|
||||
VCALL, /* info = instruction pc */
|
||||
VVARARG /* info = instruction pc */
|
||||
} expkind;
|
||||
|
||||
|
||||
#define vkisvar(k) (VLOCAL <= (k) && (k) <= VINDEXED)
|
||||
#define vkisinreg(k) ((k) == VNONRELOC || (k) == VLOCAL)
|
||||
|
||||
typedef struct expdesc {
|
||||
expkind k;
|
||||
union {
|
||||
struct { /* for indexed variables (VINDEXED) */
|
||||
short idx; /* index (R/K) */
|
||||
lu_byte t; /* table (register or upvalue) */
|
||||
lu_byte vt; /* whether 't' is register (VLOCAL) or upvalue (VUPVAL) */
|
||||
} ind;
|
||||
int info; /* for generic use */
|
||||
lua_Number nval; /* for VKFLT */
|
||||
lua_Integer ival; /* for VKINT */
|
||||
} u;
|
||||
int t; /* patch list of 'exit when true' */
|
||||
int f; /* patch list of 'exit when false' */
|
||||
} expdesc;
|
||||
|
||||
|
||||
/* description of active local variable */
|
||||
typedef struct Vardesc {
|
||||
short idx; /* variable index in stack */
|
||||
} Vardesc;
|
||||
|
||||
|
||||
/* description of pending goto statements and label statements */
|
||||
typedef struct Labeldesc {
|
||||
TString *name; /* label identifier */
|
||||
int pc; /* position in code */
|
||||
int line; /* line where it appeared */
|
||||
lu_byte nactvar; /* local level where it appears in current block */
|
||||
} Labeldesc;
|
||||
|
||||
|
||||
/* list of labels or gotos */
|
||||
typedef struct Labellist {
|
||||
Labeldesc *arr; /* array */
|
||||
int n; /* number of entries in use */
|
||||
int size; /* array size */
|
||||
} Labellist;
|
||||
|
||||
|
||||
/* dynamic structures used by the parser */
|
||||
typedef struct Dyndata {
|
||||
struct { /* list of active local variables */
|
||||
Vardesc *arr;
|
||||
int n;
|
||||
int size;
|
||||
} actvar;
|
||||
Labellist gt; /* list of pending gotos */
|
||||
Labellist label; /* list of active labels */
|
||||
} Dyndata;
|
||||
|
||||
|
||||
/* control of blocks */
|
||||
struct BlockCnt; /* defined in lparser.c */
|
||||
|
||||
|
||||
/* state needed to generate code for a given function */
|
||||
typedef struct FuncState {
|
||||
Proto *f; /* current function header */
|
||||
struct FuncState *prev; /* enclosing function */
|
||||
struct LexState *ls; /* lexical state */
|
||||
struct BlockCnt *bl; /* chain of current blocks */
|
||||
int pc; /* next position to code (equivalent to 'ncode') */
|
||||
int lasttarget; /* 'label' of last 'jump label' */
|
||||
int jpc; /* list of pending jumps to 'pc' */
|
||||
int nk; /* number of elements in 'k' */
|
||||
int np; /* number of elements in 'p' */
|
||||
int firstlocal; /* index of first local var (in Dyndata array) */
|
||||
short nlocvars; /* number of elements in 'f->locvars' */
|
||||
lu_byte nactvar; /* number of active local variables */
|
||||
lu_byte nups; /* number of upvalues */
|
||||
lu_byte freereg; /* first free register */
|
||||
} FuncState;
|
||||
|
||||
|
||||
LUAI_FUNC LClosure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff,
|
||||
Dyndata *dyd, const char *name, int firstchar);
|
||||
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,39 @@
|
||||
/*
|
||||
** $Id: lprefix.h,v 1.1 2014/11/03 15:12:44 roberto Exp $
|
||||
** Definitions for Lua code that must come before any other header file
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef lprefix_h
|
||||
#define lprefix_h
|
||||
|
||||
|
||||
/*
|
||||
** Allows POSIX/XSI stuff
|
||||
*/
|
||||
#if !defined(_XOPEN_SOURCE)
|
||||
#define _XOPEN_SOURCE 600
|
||||
#endif
|
||||
|
||||
/*
|
||||
** Allows manipulation of large files in gcc and some other compilers
|
||||
*/
|
||||
#if !defined(_FILE_OFFSET_BITS)
|
||||
#define _LARGEFILE_SOURCE 1
|
||||
#define _FILE_OFFSET_BITS 64
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** Windows stuff
|
||||
*/
|
||||
#if defined(_WIN32) /* { */
|
||||
|
||||
#if !defined(_CRT_SECURE_NO_WARNINGS)
|
||||
#define _CRT_SECURE_NO_WARNINGS /* avoid warnings about ISO C functions */
|
||||
#endif
|
||||
|
||||
#endif /* } */
|
||||
|
||||
#endif
|
||||
|
||||
@ -0,0 +1,223 @@
|
||||
/*
|
||||
** $Id: lstate.h,v 2.119 2014/10/30 18:53:28 roberto Exp $
|
||||
** Global State
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef lstate_h
|
||||
#define lstate_h
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lobject.h"
|
||||
#include "ltm.h"
|
||||
#include "lzio.h"
|
||||
|
||||
|
||||
/*
|
||||
|
||||
** Some notes about garbage-collected objects: All objects in Lua must
|
||||
** be kept somehow accessible until being freed, so all objects always
|
||||
** belong to one (and only one) of these lists, using field 'next' of
|
||||
** the 'CommonHeader' for the link:
|
||||
**
|
||||
** 'allgc': all objects not marked for finalization;
|
||||
** 'finobj': all objects marked for finalization;
|
||||
** 'tobefnz': all objects ready to be finalized;
|
||||
** 'fixedgc': all objects that are not to be collected (currently
|
||||
** only small strings, such as reserved words).
|
||||
|
||||
*/
|
||||
|
||||
|
||||
struct lua_longjmp; /* defined in ldo.c */
|
||||
|
||||
|
||||
|
||||
/* extra stack space to handle TM calls and some other extras */
|
||||
#define EXTRA_STACK 5
|
||||
|
||||
|
||||
#define BASIC_STACK_SIZE (2*LUA_MINSTACK)
|
||||
|
||||
|
||||
/* kinds of Garbage Collection */
|
||||
#define KGC_NORMAL 0
|
||||
#define KGC_EMERGENCY 1 /* gc was forced by an allocation failure */
|
||||
|
||||
|
||||
typedef struct stringtable {
|
||||
TString **hash;
|
||||
int nuse; /* number of elements */
|
||||
int size;
|
||||
} stringtable;
|
||||
|
||||
|
||||
/*
|
||||
** Information about a call.
|
||||
** When a thread yields, 'func' is adjusted to pretend that the
|
||||
** top function has only the yielded values in its stack; in that
|
||||
** case, the actual 'func' value is saved in field 'extra'.
|
||||
** When a function calls another with a continuation, 'extra' keeps
|
||||
** the function index so that, in case of errors, the continuation
|
||||
** function can be called with the correct top.
|
||||
*/
|
||||
typedef struct CallInfo {
|
||||
StkId func; /* function index in the stack */
|
||||
StkId top; /* top for this function */
|
||||
struct CallInfo *previous, *next; /* dynamic call link */
|
||||
union {
|
||||
struct { /* only for Lua functions */
|
||||
StkId base; /* base for this function */
|
||||
const Instruction *savedpc;
|
||||
} l;
|
||||
struct { /* only for C functions */
|
||||
lua_KFunction k; /* continuation in case of yields */
|
||||
ptrdiff_t old_errfunc;
|
||||
lua_KContext ctx; /* context info. in case of yields */
|
||||
} c;
|
||||
} u;
|
||||
ptrdiff_t extra;
|
||||
short nresults; /* expected number of results from this function */
|
||||
lu_byte callstatus;
|
||||
} CallInfo;
|
||||
|
||||
|
||||
/*
|
||||
** Bits in CallInfo status
|
||||
*/
|
||||
#define CIST_OAH (1<<0) /* original value of 'allowhook' */
|
||||
#define CIST_LUA (1<<1) /* call is running a Lua function */
|
||||
#define CIST_HOOKED (1<<2) /* call is running a debug hook */
|
||||
#define CIST_REENTRY (1<<3) /* call is running on same invocation of
|
||||
luaV_execute of previous call */
|
||||
#define CIST_YPCALL (1<<4) /* call is a yieldable protected call */
|
||||
#define CIST_TAIL (1<<5) /* call was tail called */
|
||||
#define CIST_HOOKYIELD (1<<6) /* last hook called yielded */
|
||||
|
||||
#define isLua(ci) ((ci)->callstatus & CIST_LUA)
|
||||
|
||||
/* assume that CIST_OAH has offset 0 and that 'v' is strictly 0/1 */
|
||||
#define setoah(st,v) ((st) = ((st) & ~CIST_OAH) | (v))
|
||||
#define getoah(st) ((st) & CIST_OAH)
|
||||
|
||||
|
||||
/*
|
||||
** 'global state', shared by all threads of this state
|
||||
*/
|
||||
typedef struct global_State {
|
||||
lua_Alloc frealloc; /* function to reallocate memory */
|
||||
void *ud; /* auxiliary data to 'frealloc' */
|
||||
lu_mem totalbytes; /* number of bytes currently allocated - GCdebt */
|
||||
l_mem GCdebt; /* bytes allocated not yet compensated by the collector */
|
||||
lu_mem GCmemtrav; /* memory traversed by the GC */
|
||||
lu_mem GCestimate; /* an estimate of the non-garbage memory in use */
|
||||
stringtable strt; /* hash table for strings */
|
||||
TValue l_registry;
|
||||
unsigned int seed; /* randomized seed for hashes */
|
||||
lu_byte currentwhite;
|
||||
lu_byte gcstate; /* state of garbage collector */
|
||||
lu_byte gckind; /* kind of GC running */
|
||||
lu_byte gcrunning; /* true if GC is running */
|
||||
GCObject *allgc; /* list of all collectable objects */
|
||||
GCObject **sweepgc; /* current position of sweep in list */
|
||||
GCObject *finobj; /* list of collectable objects with finalizers */
|
||||
GCObject *gray; /* list of gray objects */
|
||||
GCObject *grayagain; /* list of objects to be traversed atomically */
|
||||
GCObject *weak; /* list of tables with weak values */
|
||||
GCObject *ephemeron; /* list of ephemeron tables (weak keys) */
|
||||
GCObject *allweak; /* list of all-weak tables */
|
||||
GCObject *tobefnz; /* list of userdata to be GC */
|
||||
GCObject *fixedgc; /* list of objects not to be collected */
|
||||
struct lua_State *twups; /* list of threads with open upvalues */
|
||||
Mbuffer buff; /* temporary buffer for string concatenation */
|
||||
unsigned int gcfinnum; /* number of finalizers to call in each GC step */
|
||||
int gcpause; /* size of pause between successive GCs */
|
||||
int gcstepmul; /* GC 'granularity' */
|
||||
lua_CFunction panic; /* to be called in unprotected errors */
|
||||
struct lua_State *mainthread;
|
||||
const lua_Number *version; /* pointer to version number */
|
||||
TString *memerrmsg; /* memory-error message */
|
||||
TString *tmname[TM_N]; /* array with tag-method names */
|
||||
struct Table *mt[LUA_NUMTAGS]; /* metatables for basic types */
|
||||
} global_State;
|
||||
|
||||
|
||||
/*
|
||||
** 'per thread' state
|
||||
*/
|
||||
struct lua_State {
|
||||
CommonHeader;
|
||||
lu_byte status;
|
||||
StkId top; /* first free slot in the stack */
|
||||
global_State *l_G;
|
||||
CallInfo *ci; /* call info for current function */
|
||||
const Instruction *oldpc; /* last pc traced */
|
||||
StkId stack_last; /* last free slot in the stack */
|
||||
StkId stack; /* stack base */
|
||||
UpVal *openupval; /* list of open upvalues in this stack */
|
||||
GCObject *gclist;
|
||||
struct lua_State *twups; /* list of threads with open upvalues */
|
||||
struct lua_longjmp *errorJmp; /* current error recover point */
|
||||
CallInfo base_ci; /* CallInfo for first level (C calling Lua) */
|
||||
lua_Hook hook;
|
||||
ptrdiff_t errfunc; /* current error handling function (stack index) */
|
||||
int stacksize;
|
||||
int basehookcount;
|
||||
int hookcount;
|
||||
unsigned short nny; /* number of non-yieldable calls in stack */
|
||||
unsigned short nCcalls; /* number of nested C calls */
|
||||
lu_byte hookmask;
|
||||
lu_byte allowhook;
|
||||
};
|
||||
|
||||
|
||||
#define G(L) (L->l_G)
|
||||
|
||||
|
||||
/*
|
||||
** Union of all collectable objects (only for conversions)
|
||||
*/
|
||||
union GCUnion {
|
||||
GCObject gc; /* common header */
|
||||
struct TString ts;
|
||||
struct Udata u;
|
||||
union Closure cl;
|
||||
struct Table h;
|
||||
struct Proto p;
|
||||
struct lua_State th; /* thread */
|
||||
};
|
||||
|
||||
|
||||
#define cast_u(o) cast(union GCUnion *, (o))
|
||||
|
||||
/* macros to convert a GCObject into a specific value */
|
||||
#define gco2ts(o) \
|
||||
check_exp(novariant((o)->tt) == LUA_TSTRING, &((cast_u(o))->ts))
|
||||
#define gco2u(o) check_exp((o)->tt == LUA_TUSERDATA, &((cast_u(o))->u))
|
||||
#define gco2lcl(o) check_exp((o)->tt == LUA_TLCL, &((cast_u(o))->cl.l))
|
||||
#define gco2ccl(o) check_exp((o)->tt == LUA_TCCL, &((cast_u(o))->cl.c))
|
||||
#define gco2cl(o) \
|
||||
check_exp(novariant((o)->tt) == LUA_TFUNCTION, &((cast_u(o))->cl))
|
||||
#define gco2t(o) check_exp((o)->tt == LUA_TTABLE, &((cast_u(o))->h))
|
||||
#define gco2p(o) check_exp((o)->tt == LUA_TPROTO, &((cast_u(o))->p))
|
||||
#define gco2th(o) check_exp((o)->tt == LUA_TTHREAD, &((cast_u(o))->th))
|
||||
|
||||
|
||||
/* macro to convert a Lua object into a GCObject */
|
||||
#define obj2gco(v) \
|
||||
check_exp(novariant((v)->tt) < LUA_TDEADKEY, (&(cast_u(v)->gc)))
|
||||
|
||||
|
||||
/* actual number of total bytes allocated */
|
||||
#define gettotalbytes(g) ((g)->totalbytes + (g)->GCdebt)
|
||||
|
||||
LUAI_FUNC void luaE_setdebt (global_State *g, l_mem debt);
|
||||
LUAI_FUNC void luaE_freethread (lua_State *L, lua_State *L1);
|
||||
LUAI_FUNC CallInfo *luaE_extendCI (lua_State *L);
|
||||
LUAI_FUNC void luaE_freeCI (lua_State *L);
|
||||
LUAI_FUNC void luaE_shrinkCI (lua_State *L);
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
@ -0,0 +1,46 @@
|
||||
/*
|
||||
** $Id: lstring.h,v 1.56 2014/07/18 14:46:47 roberto Exp $
|
||||
** String table (keep all strings handled by Lua)
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef lstring_h
|
||||
#define lstring_h
|
||||
|
||||
#include "lgc.h"
|
||||
#include "lobject.h"
|
||||
#include "lstate.h"
|
||||
|
||||
|
||||
#define sizelstring(l) (sizeof(union UTString) + ((l) + 1) * sizeof(char))
|
||||
#define sizestring(s) sizelstring((s)->len)
|
||||
|
||||
#define sizeludata(l) (sizeof(union UUdata) + (l))
|
||||
#define sizeudata(u) sizeludata((u)->len)
|
||||
|
||||
#define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \
|
||||
(sizeof(s)/sizeof(char))-1))
|
||||
|
||||
|
||||
/*
|
||||
** test whether a string is a reserved word
|
||||
*/
|
||||
#define isreserved(s) ((s)->tt == LUA_TSHRSTR && (s)->extra > 0)
|
||||
|
||||
|
||||
/*
|
||||
** equality for short strings, which are always internalized
|
||||
*/
|
||||
#define eqshrstr(a,b) check_exp((a)->tt == LUA_TSHRSTR, (a) == (b))
|
||||
|
||||
|
||||
LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed);
|
||||
LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);
|
||||
LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
|
||||
LUAI_FUNC void luaS_remove (lua_State *L, TString *ts);
|
||||
LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s);
|
||||
LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
|
||||
LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);
|
||||
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,53 @@
|
||||
/*
|
||||
** $Id: ltable.h,v 2.20 2014/09/04 18:15:29 roberto Exp $
|
||||
** Lua tables (hash)
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef ltable_h
|
||||
#define ltable_h
|
||||
|
||||
#include "lobject.h"
|
||||
|
||||
|
||||
#define gnode(t,i) (&(t)->node[i])
|
||||
#define gval(n) (&(n)->i_val)
|
||||
#define gnext(n) ((n)->i_key.nk.next)
|
||||
|
||||
|
||||
/* 'const' to avoid wrong writings that can mess up field 'next' */
|
||||
#define gkey(n) cast(const TValue*, (&(n)->i_key.tvk))
|
||||
|
||||
#define wgkey(n) (&(n)->i_key.nk)
|
||||
|
||||
#define invalidateTMcache(t) ((t)->flags = 0)
|
||||
|
||||
|
||||
/* returns the key, given the value of a table entry */
|
||||
#define keyfromval(v) \
|
||||
(gkey(cast(Node *, cast(char *, (v)) - offsetof(Node, i_val))))
|
||||
|
||||
|
||||
LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key);
|
||||
LUAI_FUNC void luaH_setint (lua_State *L, Table *t, lua_Integer key,
|
||||
TValue *value);
|
||||
LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key);
|
||||
LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key);
|
||||
LUAI_FUNC TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key);
|
||||
LUAI_FUNC TValue *luaH_set (lua_State *L, Table *t, const TValue *key);
|
||||
LUAI_FUNC Table *luaH_new (lua_State *L);
|
||||
LUAI_FUNC void luaH_resize (lua_State *L, Table *t, unsigned int nasize,
|
||||
unsigned int nhsize);
|
||||
LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize);
|
||||
LUAI_FUNC void luaH_free (lua_State *L, Table *t);
|
||||
LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key);
|
||||
LUAI_FUNC int luaH_getn (Table *t);
|
||||
|
||||
|
||||
#if defined(LUA_DEBUG)
|
||||
LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key);
|
||||
LUAI_FUNC int luaH_isdummy (Node *n);
|
||||
#endif
|
||||
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,75 @@
|
||||
/*
|
||||
** $Id: ltm.h,v 2.21 2014/10/25 11:50:46 roberto Exp $
|
||||
** Tag methods
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef ltm_h
|
||||
#define ltm_h
|
||||
|
||||
|
||||
#include "lobject.h"
|
||||
|
||||
|
||||
/*
|
||||
* WARNING: if you change the order of this enumeration,
|
||||
* grep "ORDER TM" and "ORDER OP"
|
||||
*/
|
||||
typedef enum {
|
||||
TM_INDEX,
|
||||
TM_NEWINDEX,
|
||||
TM_GC,
|
||||
TM_MODE,
|
||||
TM_LEN,
|
||||
TM_EQ, /* last tag method with fast access */
|
||||
TM_ADD,
|
||||
TM_SUB,
|
||||
TM_MUL,
|
||||
TM_MOD,
|
||||
TM_POW,
|
||||
TM_DIV,
|
||||
TM_IDIV,
|
||||
TM_BAND,
|
||||
TM_BOR,
|
||||
TM_BXOR,
|
||||
TM_SHL,
|
||||
TM_SHR,
|
||||
TM_UNM,
|
||||
TM_BNOT,
|
||||
TM_LT,
|
||||
TM_LE,
|
||||
TM_CONCAT,
|
||||
TM_CALL,
|
||||
TM_N /* number of elements in the enum */
|
||||
} TMS;
|
||||
|
||||
|
||||
|
||||
#define gfasttm(g,et,e) ((et) == NULL ? NULL : \
|
||||
((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e]))
|
||||
|
||||
#define fasttm(l,et,e) gfasttm(G(l), et, e)
|
||||
|
||||
#define ttypename(x) luaT_typenames_[(x) + 1]
|
||||
#define objtypename(x) ttypename(ttnov(x))
|
||||
|
||||
LUAI_DDEC const char *const luaT_typenames_[LUA_TOTALTAGS];
|
||||
|
||||
|
||||
LUAI_FUNC const TValue *luaT_gettm (Table *events, TMS event, TString *ename);
|
||||
LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o,
|
||||
TMS event);
|
||||
LUAI_FUNC void luaT_init (lua_State *L);
|
||||
|
||||
LUAI_FUNC void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
|
||||
const TValue *p2, TValue *p3, int hasres);
|
||||
LUAI_FUNC int luaT_callbinTM (lua_State *L, const TValue *p1, const TValue *p2,
|
||||
StkId res, TMS event);
|
||||
LUAI_FUNC void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2,
|
||||
StkId res, TMS event);
|
||||
LUAI_FUNC int luaT_callorderTM (lua_State *L, const TValue *p1,
|
||||
const TValue *p2, TMS event);
|
||||
|
||||
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,485 @@
|
||||
/*
|
||||
** $Id: lua.h,v 1.324 2014/12/08 15:12:07 roberto Exp $
|
||||
** Lua - A Scripting Language
|
||||
** Lua.org, PUC-Rio, Brazil (http://www.lua.org)
|
||||
** See Copyright Notice at the end of this file
|
||||
*/
|
||||
|
||||
|
||||
#ifndef lua_h
|
||||
#define lua_h
|
||||
|
||||
#include <stdarg.h>
|
||||
#include <stddef.h>
|
||||
|
||||
|
||||
#include "luaconf.h"
|
||||
|
||||
|
||||
#define LUA_VERSION_MAJOR "5"
|
||||
#define LUA_VERSION_MINOR "3"
|
||||
#define LUA_VERSION_NUM 503
|
||||
#define LUA_VERSION_RELEASE "0"
|
||||
|
||||
#define LUA_VERSION "Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
|
||||
#define LUA_RELEASE LUA_VERSION "." LUA_VERSION_RELEASE
|
||||
#define LUA_COPYRIGHT LUA_RELEASE " Copyright (C) 1994-2014 Lua.org, PUC-Rio"
|
||||
#define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo, W. Celes"
|
||||
|
||||
|
||||
/* mark for precompiled code ('<esc>Lua') */
|
||||
#define LUA_SIGNATURE "\x1bLua"
|
||||
|
||||
/* option for multiple returns in 'lua_pcall' and 'lua_call' */
|
||||
#define LUA_MULTRET (-1)
|
||||
|
||||
|
||||
/*
|
||||
** pseudo-indices
|
||||
*/
|
||||
#define LUA_REGISTRYINDEX LUAI_FIRSTPSEUDOIDX
|
||||
#define lua_upvalueindex(i) (LUA_REGISTRYINDEX - (i))
|
||||
|
||||
|
||||
/* thread status */
|
||||
#define LUA_OK 0
|
||||
#define LUA_YIELD 1
|
||||
#define LUA_ERRRUN 2
|
||||
#define LUA_ERRSYNTAX 3
|
||||
#define LUA_ERRMEM 4
|
||||
#define LUA_ERRGCMM 5
|
||||
#define LUA_ERRERR 6
|
||||
|
||||
|
||||
typedef struct lua_State lua_State;
|
||||
|
||||
|
||||
/*
|
||||
** basic types
|
||||
*/
|
||||
#define LUA_TNONE (-1)
|
||||
|
||||
#define LUA_TNIL 0
|
||||
#define LUA_TBOOLEAN 1
|
||||
#define LUA_TLIGHTUSERDATA 2
|
||||
#define LUA_TNUMBER 3
|
||||
#define LUA_TSTRING 4
|
||||
#define LUA_TTABLE 5
|
||||
#define LUA_TFUNCTION 6
|
||||
#define LUA_TUSERDATA 7
|
||||
#define LUA_TTHREAD 8
|
||||
|
||||
#define LUA_NUMTAGS 9
|
||||
|
||||
|
||||
|
||||
/* minimum Lua stack available to a C function */
|
||||
#define LUA_MINSTACK 20
|
||||
|
||||
|
||||
/* predefined values in the registry */
|
||||
#define LUA_RIDX_MAINTHREAD 1
|
||||
#define LUA_RIDX_GLOBALS 2
|
||||
#define LUA_RIDX_LAST LUA_RIDX_GLOBALS
|
||||
|
||||
|
||||
/* type of numbers in Lua */
|
||||
typedef LUA_NUMBER lua_Number;
|
||||
|
||||
|
||||
/* type for integer functions */
|
||||
typedef LUA_INTEGER lua_Integer;
|
||||
|
||||
/* unsigned integer type */
|
||||
typedef LUA_UNSIGNED lua_Unsigned;
|
||||
|
||||
/* type for continuation-function contexts */
|
||||
typedef LUA_KCONTEXT lua_KContext;
|
||||
|
||||
|
||||
/*
|
||||
** Type for C functions registered with Lua
|
||||
*/
|
||||
typedef int (*lua_CFunction) (lua_State *L);
|
||||
|
||||
/*
|
||||
** Type for continuation functions
|
||||
*/
|
||||
typedef int (*lua_KFunction) (lua_State *L, int status, lua_KContext ctx);
|
||||
|
||||
|
||||
/*
|
||||
** Type for functions that read/write blocks when loading/dumping Lua chunks
|
||||
*/
|
||||
typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz);
|
||||
|
||||
typedef int (*lua_Writer) (lua_State *L, const void *p, size_t sz, void *ud);
|
||||
|
||||
|
||||
/*
|
||||
** Type for memory-allocation functions
|
||||
*/
|
||||
typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize);
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** generic extra include file
|
||||
*/
|
||||
#if defined(LUA_USER_H)
|
||||
#include LUA_USER_H
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** RCS ident string
|
||||
*/
|
||||
extern const char lua_ident[];
|
||||
|
||||
|
||||
/*
|
||||
** state manipulation
|
||||
*/
|
||||
LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud);
|
||||
LUA_API void (lua_close) (lua_State *L);
|
||||
LUA_API lua_State *(lua_newthread) (lua_State *L);
|
||||
|
||||
LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf);
|
||||
|
||||
|
||||
LUA_API const lua_Number *(lua_version) (lua_State *L);
|
||||
|
||||
|
||||
/*
|
||||
** basic stack manipulation
|
||||
*/
|
||||
LUA_API int (lua_absindex) (lua_State *L, int idx);
|
||||
LUA_API int (lua_gettop) (lua_State *L);
|
||||
LUA_API void (lua_settop) (lua_State *L, int idx);
|
||||
LUA_API void (lua_pushvalue) (lua_State *L, int idx);
|
||||
LUA_API void (lua_rotate) (lua_State *L, int idx, int n);
|
||||
LUA_API void (lua_copy) (lua_State *L, int fromidx, int toidx);
|
||||
LUA_API int (lua_checkstack) (lua_State *L, int n);
|
||||
|
||||
LUA_API void (lua_xmove) (lua_State *from, lua_State *to, int n);
|
||||
|
||||
|
||||
/*
|
||||
** access functions (stack -> C)
|
||||
*/
|
||||
|
||||
LUA_API int (lua_isnumber) (lua_State *L, int idx);
|
||||
LUA_API int (lua_isstring) (lua_State *L, int idx);
|
||||
LUA_API int (lua_iscfunction) (lua_State *L, int idx);
|
||||
LUA_API int (lua_isinteger) (lua_State *L, int idx);
|
||||
LUA_API int (lua_isuserdata) (lua_State *L, int idx);
|
||||
LUA_API int (lua_type) (lua_State *L, int idx);
|
||||
LUA_API const char *(lua_typename) (lua_State *L, int tp);
|
||||
|
||||
LUA_API lua_Number (lua_tonumberx) (lua_State *L, int idx, int *isnum);
|
||||
LUA_API lua_Integer (lua_tointegerx) (lua_State *L, int idx, int *isnum);
|
||||
LUA_API int (lua_toboolean) (lua_State *L, int idx);
|
||||
LUA_API const char *(lua_tolstring) (lua_State *L, int idx, size_t *len);
|
||||
LUA_API size_t (lua_rawlen) (lua_State *L, int idx);
|
||||
LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx);
|
||||
LUA_API void *(lua_touserdata) (lua_State *L, int idx);
|
||||
LUA_API lua_State *(lua_tothread) (lua_State *L, int idx);
|
||||
LUA_API const void *(lua_topointer) (lua_State *L, int idx);
|
||||
|
||||
|
||||
/*
|
||||
** Comparison and arithmetic functions
|
||||
*/
|
||||
|
||||
#define LUA_OPADD 0 /* ORDER TM, ORDER OP */
|
||||
#define LUA_OPSUB 1
|
||||
#define LUA_OPMUL 2
|
||||
#define LUA_OPMOD 3
|
||||
#define LUA_OPPOW 4
|
||||
#define LUA_OPDIV 5
|
||||
#define LUA_OPIDIV 6
|
||||
#define LUA_OPBAND 7
|
||||
#define LUA_OPBOR 8
|
||||
#define LUA_OPBXOR 9
|
||||
#define LUA_OPSHL 10
|
||||
#define LUA_OPSHR 11
|
||||
#define LUA_OPUNM 12
|
||||
#define LUA_OPBNOT 13
|
||||
|
||||
LUA_API void (lua_arith) (lua_State *L, int op);
|
||||
|
||||
#define LUA_OPEQ 0
|
||||
#define LUA_OPLT 1
|
||||
#define LUA_OPLE 2
|
||||
|
||||
LUA_API int (lua_rawequal) (lua_State *L, int idx1, int idx2);
|
||||
LUA_API int (lua_compare) (lua_State *L, int idx1, int idx2, int op);
|
||||
|
||||
|
||||
/*
|
||||
** push functions (C -> stack)
|
||||
*/
|
||||
LUA_API void (lua_pushnil) (lua_State *L);
|
||||
LUA_API void (lua_pushnumber) (lua_State *L, lua_Number n);
|
||||
LUA_API void (lua_pushinteger) (lua_State *L, lua_Integer n);
|
||||
LUA_API const char *(lua_pushlstring) (lua_State *L, const char *s, size_t len);
|
||||
LUA_API const char *(lua_pushstring) (lua_State *L, const char *s);
|
||||
LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt,
|
||||
va_list argp);
|
||||
LUA_API const char *(lua_pushfstring) (lua_State *L, const char *fmt, ...);
|
||||
LUA_API void (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n);
|
||||
LUA_API void (lua_pushboolean) (lua_State *L, int b);
|
||||
LUA_API void (lua_pushlightuserdata) (lua_State *L, void *p);
|
||||
LUA_API int (lua_pushthread) (lua_State *L);
|
||||
|
||||
|
||||
/*
|
||||
** get functions (Lua -> stack)
|
||||
*/
|
||||
LUA_API int (lua_getglobal) (lua_State *L, const char *name);
|
||||
LUA_API int (lua_gettable) (lua_State *L, int idx);
|
||||
LUA_API int (lua_getfield) (lua_State *L, int idx, const char *k);
|
||||
LUA_API int (lua_geti) (lua_State *L, int idx, lua_Integer n);
|
||||
LUA_API int (lua_rawget) (lua_State *L, int idx);
|
||||
LUA_API int (lua_rawgeti) (lua_State *L, int idx, lua_Integer n);
|
||||
LUA_API int (lua_rawgetp) (lua_State *L, int idx, const void *p);
|
||||
|
||||
LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec);
|
||||
LUA_API void *(lua_newuserdata) (lua_State *L, size_t sz);
|
||||
LUA_API int (lua_getmetatable) (lua_State *L, int objindex);
|
||||
LUA_API int (lua_getuservalue) (lua_State *L, int idx);
|
||||
|
||||
|
||||
/*
|
||||
** set functions (stack -> Lua)
|
||||
*/
|
||||
LUA_API void (lua_setglobal) (lua_State *L, const char *name);
|
||||
LUA_API void (lua_settable) (lua_State *L, int idx);
|
||||
LUA_API void (lua_setfield) (lua_State *L, int idx, const char *k);
|
||||
LUA_API void (lua_seti) (lua_State *L, int idx, lua_Integer n);
|
||||
LUA_API void (lua_rawset) (lua_State *L, int idx);
|
||||
LUA_API void (lua_rawseti) (lua_State *L, int idx, lua_Integer n);
|
||||
LUA_API void (lua_rawsetp) (lua_State *L, int idx, const void *p);
|
||||
LUA_API int (lua_setmetatable) (lua_State *L, int objindex);
|
||||
LUA_API void (lua_setuservalue) (lua_State *L, int idx);
|
||||
|
||||
|
||||
/*
|
||||
** 'load' and 'call' functions (load and run Lua code)
|
||||
*/
|
||||
LUA_API void (lua_callk) (lua_State *L, int nargs, int nresults,
|
||||
lua_KContext ctx, lua_KFunction k);
|
||||
#define lua_call(L,n,r) lua_callk(L, (n), (r), 0, NULL)
|
||||
|
||||
LUA_API int (lua_pcallk) (lua_State *L, int nargs, int nresults, int errfunc,
|
||||
lua_KContext ctx, lua_KFunction k);
|
||||
#define lua_pcall(L,n,r,f) lua_pcallk(L, (n), (r), (f), 0, NULL)
|
||||
|
||||
LUA_API int (lua_load) (lua_State *L, lua_Reader reader, void *dt,
|
||||
const char *chunkname, const char *mode);
|
||||
|
||||
LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data, int strip);
|
||||
|
||||
|
||||
/*
|
||||
** coroutine functions
|
||||
*/
|
||||
LUA_API int (lua_yieldk) (lua_State *L, int nresults, lua_KContext ctx,
|
||||
lua_KFunction k);
|
||||
LUA_API int (lua_resume) (lua_State *L, lua_State *from, int narg);
|
||||
LUA_API int (lua_status) (lua_State *L);
|
||||
LUA_API int (lua_isyieldable) (lua_State *L);
|
||||
|
||||
#define lua_yield(L,n) lua_yieldk(L, (n), 0, NULL)
|
||||
|
||||
|
||||
/*
|
||||
** garbage-collection function and options
|
||||
*/
|
||||
|
||||
#define LUA_GCSTOP 0
|
||||
#define LUA_GCRESTART 1
|
||||
#define LUA_GCCOLLECT 2
|
||||
#define LUA_GCCOUNT 3
|
||||
#define LUA_GCCOUNTB 4
|
||||
#define LUA_GCSTEP 5
|
||||
#define LUA_GCSETPAUSE 6
|
||||
#define LUA_GCSETSTEPMUL 7
|
||||
#define LUA_GCISRUNNING 9
|
||||
|
||||
LUA_API int (lua_gc) (lua_State *L, int what, int data);
|
||||
|
||||
|
||||
/*
|
||||
** miscellaneous functions
|
||||
*/
|
||||
|
||||
LUA_API int (lua_error) (lua_State *L);
|
||||
|
||||
LUA_API int (lua_next) (lua_State *L, int idx);
|
||||
|
||||
LUA_API void (lua_concat) (lua_State *L, int n);
|
||||
LUA_API void (lua_len) (lua_State *L, int idx);
|
||||
|
||||
LUA_API size_t (lua_stringtonumber) (lua_State *L, const char *s);
|
||||
|
||||
LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud);
|
||||
LUA_API void (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud);
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** {==============================================================
|
||||
** some useful macros
|
||||
** ===============================================================
|
||||
*/
|
||||
|
||||
#define lua_getextraspace(L) ((void *)((char *)(L) - LUA_EXTRASPACE))
|
||||
|
||||
#define lua_tonumber(L,i) lua_tonumberx(L,(i),NULL)
|
||||
#define lua_tointeger(L,i) lua_tointegerx(L,(i),NULL)
|
||||
|
||||
#define lua_pop(L,n) lua_settop(L, -(n)-1)
|
||||
|
||||
#define lua_newtable(L) lua_createtable(L, 0, 0)
|
||||
|
||||
#define lua_register(L,n,f) (lua_pushcfunction(L, (f)), lua_setglobal(L, (n)))
|
||||
|
||||
#define lua_pushcfunction(L,f) lua_pushcclosure(L, (f), 0)
|
||||
|
||||
#define lua_isfunction(L,n) (lua_type(L, (n)) == LUA_TFUNCTION)
|
||||
#define lua_istable(L,n) (lua_type(L, (n)) == LUA_TTABLE)
|
||||
#define lua_islightuserdata(L,n) (lua_type(L, (n)) == LUA_TLIGHTUSERDATA)
|
||||
#define lua_isnil(L,n) (lua_type(L, (n)) == LUA_TNIL)
|
||||
#define lua_isboolean(L,n) (lua_type(L, (n)) == LUA_TBOOLEAN)
|
||||
#define lua_isthread(L,n) (lua_type(L, (n)) == LUA_TTHREAD)
|
||||
#define lua_isnone(L,n) (lua_type(L, (n)) == LUA_TNONE)
|
||||
#define lua_isnoneornil(L, n) (lua_type(L, (n)) <= 0)
|
||||
|
||||
#define lua_pushliteral(L, s) \
|
||||
lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1)
|
||||
|
||||
#define lua_pushglobaltable(L) \
|
||||
lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS)
|
||||
|
||||
#define lua_tostring(L,i) lua_tolstring(L, (i), NULL)
|
||||
|
||||
|
||||
#define lua_insert(L,idx) lua_rotate(L, (idx), 1)
|
||||
|
||||
#define lua_remove(L,idx) (lua_rotate(L, (idx), -1), lua_pop(L, 1))
|
||||
|
||||
#define lua_replace(L,idx) (lua_copy(L, -1, (idx)), lua_pop(L, 1))
|
||||
|
||||
/* }============================================================== */
|
||||
|
||||
|
||||
/*
|
||||
** {==============================================================
|
||||
** compatibility macros for unsigned conversions
|
||||
** ===============================================================
|
||||
*/
|
||||
#if defined(LUA_COMPAT_APIINTCASTS)
|
||||
|
||||
#define lua_pushunsigned(L,n) lua_pushinteger(L, (lua_Integer)(n))
|
||||
#define lua_tounsignedx(L,i,is) ((lua_Unsigned)lua_tointegerx(L,i,is))
|
||||
#define lua_tounsigned(L,i) lua_tounsignedx(L,(i),NULL)
|
||||
|
||||
#endif
|
||||
/* }============================================================== */
|
||||
|
||||
/*
|
||||
** {======================================================================
|
||||
** Debug API
|
||||
** =======================================================================
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
** Event codes
|
||||
*/
|
||||
#define LUA_HOOKCALL 0
|
||||
#define LUA_HOOKRET 1
|
||||
#define LUA_HOOKLINE 2
|
||||
#define LUA_HOOKCOUNT 3
|
||||
#define LUA_HOOKTAILCALL 4
|
||||
|
||||
|
||||
/*
|
||||
** Event masks
|
||||
*/
|
||||
#define LUA_MASKCALL (1 << LUA_HOOKCALL)
|
||||
#define LUA_MASKRET (1 << LUA_HOOKRET)
|
||||
#define LUA_MASKLINE (1 << LUA_HOOKLINE)
|
||||
#define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT)
|
||||
|
||||
typedef struct lua_Debug lua_Debug; /* activation record */
|
||||
|
||||
|
||||
/* Functions to be called by the debugger in specific events */
|
||||
typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar);
|
||||
|
||||
|
||||
LUA_API int (lua_getstack) (lua_State *L, int level, lua_Debug *ar);
|
||||
LUA_API int (lua_getinfo) (lua_State *L, const char *what, lua_Debug *ar);
|
||||
LUA_API const char *(lua_getlocal) (lua_State *L, const lua_Debug *ar, int n);
|
||||
LUA_API const char *(lua_setlocal) (lua_State *L, const lua_Debug *ar, int n);
|
||||
LUA_API const char *(lua_getupvalue) (lua_State *L, int funcindex, int n);
|
||||
LUA_API const char *(lua_setupvalue) (lua_State *L, int funcindex, int n);
|
||||
|
||||
LUA_API void *(lua_upvalueid) (lua_State *L, int fidx, int n);
|
||||
LUA_API void (lua_upvaluejoin) (lua_State *L, int fidx1, int n1,
|
||||
int fidx2, int n2);
|
||||
|
||||
LUA_API void (lua_sethook) (lua_State *L, lua_Hook func, int mask, int count);
|
||||
LUA_API lua_Hook (lua_gethook) (lua_State *L);
|
||||
LUA_API int (lua_gethookmask) (lua_State *L);
|
||||
LUA_API int (lua_gethookcount) (lua_State *L);
|
||||
|
||||
|
||||
struct lua_Debug {
|
||||
int event;
|
||||
const char *name; /* (n) */
|
||||
const char *namewhat; /* (n) 'global', 'local', 'field', 'method' */
|
||||
const char *what; /* (S) 'Lua', 'C', 'main', 'tail' */
|
||||
const char *source; /* (S) */
|
||||
int currentline; /* (l) */
|
||||
int linedefined; /* (S) */
|
||||
int lastlinedefined; /* (S) */
|
||||
unsigned char nups; /* (u) number of upvalues */
|
||||
unsigned char nparams;/* (u) number of parameters */
|
||||
char isvararg; /* (u) */
|
||||
char istailcall; /* (t) */
|
||||
char short_src[LUA_IDSIZE]; /* (S) */
|
||||
/* private part */
|
||||
struct CallInfo *i_ci; /* active function */
|
||||
};
|
||||
|
||||
/* }====================================================================== */
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
* Copyright (C) 1994-2014 Lua.org, PUC-Rio.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining
|
||||
* a copy of this software and associated documentation files (the
|
||||
* "Software"), to deal in the Software without restriction, including
|
||||
* without limitation the rights to use, copy, modify, merge, publish,
|
||||
* distribute, sublicense, and/or sell copies of the Software, and to
|
||||
* permit persons to whom the Software is furnished to do so, subject to
|
||||
* the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be
|
||||
* included in all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||||
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
******************************************************************************/
|
||||
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,9 @@
|
||||
// lua.hpp
|
||||
// Lua header files for C++
|
||||
// <<extern "C">> not supplied automatically because Lua also compiles as C++
|
||||
|
||||
extern "C" {
|
||||
#include "lua.h"
|
||||
#include "lualib.h"
|
||||
#include "lauxlib.h"
|
||||
}
|
||||
@ -0,0 +1,743 @@
|
||||
/*
|
||||
** $Id: luaconf.h,v 1.236 2014/12/19 13:31:12 roberto Exp $
|
||||
** Configuration file for Lua
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
|
||||
#ifndef luaconf_h
|
||||
#define luaconf_h
|
||||
|
||||
#include <limits.h>
|
||||
#include <stddef.h>
|
||||
|
||||
|
||||
/*
|
||||
** ===================================================================
|
||||
** Search for "@@" to find all configurable definitions.
|
||||
** ===================================================================
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
** {====================================================================
|
||||
** System Configuration: macros to adapt (if needed) Lua to some
|
||||
** particular platform, for instance compiling it with 32-bit numbers or
|
||||
** restricting it to C89.
|
||||
** =====================================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
@@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You
|
||||
** can also define LUA_32BITS in the make file, but changing here you
|
||||
** ensure that all software connected to Lua will be compiled with the
|
||||
** same configuration.
|
||||
*/
|
||||
/* #define LUA_32BITS */
|
||||
|
||||
|
||||
/*
|
||||
@@ LUA_USE_C89 controls the use of non-ISO-C89 features.
|
||||
** Define it if you want Lua to avoid the use of a few C99 features
|
||||
** or Windows-specific features on Windows.
|
||||
*/
|
||||
/* #define LUA_USE_C89 */
|
||||
|
||||
|
||||
/*
|
||||
** By default, Lua on Windows use (some) specific Windows features
|
||||
*/
|
||||
#if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE)
|
||||
#define LUA_USE_WINDOWS /* enable goodies for regular Windows */
|
||||
#endif
|
||||
|
||||
|
||||
#if defined(LUA_USE_WINDOWS)
|
||||
#define LUA_DL_DLL /* enable support for DLL */
|
||||
#define LUA_USE_C89 /* broadly, Windows is C89 */
|
||||
#endif
|
||||
|
||||
|
||||
#if defined(LUA_USE_LINUX)
|
||||
#define LUA_USE_POSIX
|
||||
#define LUA_USE_DLOPEN /* needs an extra library: -ldl */
|
||||
#define LUA_USE_READLINE /* needs some extra libraries */
|
||||
#endif
|
||||
|
||||
|
||||
#if defined(LUA_USE_MACOSX)
|
||||
#define LUA_USE_POSIX
|
||||
#define LUA_USE_DLOPEN /* MacOS does not need -ldl */
|
||||
#define LUA_USE_READLINE /* needs an extra library: -lreadline */
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
@@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for
|
||||
** C89 ('long' and 'double'); Windows always has '__int64', so it does
|
||||
** not need to use this case.
|
||||
*/
|
||||
#if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS)
|
||||
#define LUA_C89_NUMBERS
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
/*
|
||||
@@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'.
|
||||
*/
|
||||
/* avoid undefined shifts */
|
||||
#if ((INT_MAX >> 15) >> 15) >= 1
|
||||
#define LUAI_BITSINT 32
|
||||
#else
|
||||
/* 'int' always must have at least 16 bits */
|
||||
#define LUAI_BITSINT 16
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
@@ LUA_INT_INT / LUA_INT_LONG / LUA_INT_LONGLONG defines the type for
|
||||
** Lua integers.
|
||||
@@ LUA_REAL_FLOAT / LUA_REAL_DOUBLE / LUA_REAL_LONGDOUBLE defines
|
||||
** the type for Lua floats.
|
||||
** Lua should work fine with any mix of these options (if supported
|
||||
** by your C compiler). The usual configurations are 64-bit integers
|
||||
** and 'double' (the default), 32-bit integers and 'float' (for
|
||||
** restricted platforms), and 'long'/'double' (for C compilers not
|
||||
** compliant with C99, which may not have support for 'long long').
|
||||
*/
|
||||
|
||||
#if defined(LUA_32BITS) /* { */
|
||||
/*
|
||||
** 32-bit integers and 'float'
|
||||
*/
|
||||
#if LUAI_BITSINT >= 32 /* use 'int' if big enough */
|
||||
#define LUA_INT_INT
|
||||
#else /* otherwise use 'long' */
|
||||
#define LUA_INT_LONG
|
||||
#endif
|
||||
#define LUA_REAL_FLOAT
|
||||
|
||||
#elif defined(LUA_C89_NUMBERS) /* }{ */
|
||||
/*
|
||||
** largest types available for C89 ('long' and 'double')
|
||||
*/
|
||||
#define LUA_INT_LONG
|
||||
#define LUA_REAL_DOUBLE
|
||||
|
||||
#else /* }{ */
|
||||
/*
|
||||
** default configuration for 64-bit Lua ('long long' and 'double')
|
||||
*/
|
||||
#define LUA_INT_LONGLONG
|
||||
#define LUA_REAL_DOUBLE
|
||||
|
||||
#endif /* } */
|
||||
|
||||
/* }================================================================== */
|
||||
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** {==================================================================
|
||||
** Configuration for Paths.
|
||||
** ===================================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
|
||||
** Lua libraries.
|
||||
@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
|
||||
** C libraries.
|
||||
** CHANGE them if your machine has a non-conventional directory
|
||||
** hierarchy or if you want to install your libraries in
|
||||
** non-conventional directories.
|
||||
*/
|
||||
#define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
|
||||
#if defined(_WIN32) /* { */
|
||||
/*
|
||||
** In Windows, any exclamation mark ('!') in the path is replaced by the
|
||||
** path of the directory of the executable file of the current process.
|
||||
*/
|
||||
#define LUA_LDIR "!\\lua\\"
|
||||
#define LUA_CDIR "!\\"
|
||||
#define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\"
|
||||
#define LUA_PATH_DEFAULT \
|
||||
LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \
|
||||
LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \
|
||||
LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \
|
||||
".\\?.lua;" ".\\?\\init.lua"
|
||||
#define LUA_CPATH_DEFAULT \
|
||||
LUA_CDIR"?.dll;" \
|
||||
LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \
|
||||
LUA_CDIR"loadall.dll;" ".\\?.dll"
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
#define LUA_ROOT "/usr/local/"
|
||||
#define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/"
|
||||
#define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/"
|
||||
#define LUA_PATH_DEFAULT \
|
||||
LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \
|
||||
LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \
|
||||
"./?.lua;" "./?/init.lua"
|
||||
#define LUA_CPATH_DEFAULT \
|
||||
LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so"
|
||||
#endif /* } */
|
||||
|
||||
|
||||
/*
|
||||
@@ LUA_DIRSEP is the directory separator (for submodules).
|
||||
** CHANGE it if your machine does not use "/" as the directory separator
|
||||
** and is not Windows. (On Windows Lua automatically uses "\".)
|
||||
*/
|
||||
#if defined(_WIN32)
|
||||
#define LUA_DIRSEP "\\"
|
||||
#else
|
||||
#define LUA_DIRSEP "/"
|
||||
#endif
|
||||
|
||||
/* }================================================================== */
|
||||
|
||||
|
||||
/*
|
||||
** {==================================================================
|
||||
** Marks for exported symbols in the C code
|
||||
** ===================================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
@@ LUA_API is a mark for all core API functions.
|
||||
@@ LUALIB_API is a mark for all auxiliary library functions.
|
||||
@@ LUAMOD_API is a mark for all standard library opening functions.
|
||||
** CHANGE them if you need to define those functions in some special way.
|
||||
** For instance, if you want to create one Windows DLL with the core and
|
||||
** the libraries, you may want to use the following definition (define
|
||||
** LUA_BUILD_AS_DLL to get it).
|
||||
*/
|
||||
#if defined(LUA_BUILD_AS_DLL) /* { */
|
||||
|
||||
#if defined(LUA_CORE) || defined(LUA_LIB) /* { */
|
||||
#define LUA_API __declspec(dllexport)
|
||||
#else /* }{ */
|
||||
#define LUA_API __declspec(dllimport)
|
||||
#endif /* } */
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
#define LUA_API extern
|
||||
|
||||
#endif /* } */
|
||||
|
||||
|
||||
/* more often than not the libs go together with the core */
|
||||
#define LUALIB_API LUA_API
|
||||
#define LUAMOD_API LUALIB_API
|
||||
|
||||
|
||||
/*
|
||||
@@ LUAI_FUNC is a mark for all extern functions that are not to be
|
||||
** exported to outside modules.
|
||||
@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
|
||||
** that are not to be exported to outside modules (LUAI_DDEF for
|
||||
** definitions and LUAI_DDEC for declarations).
|
||||
** CHANGE them if you need to mark them in some special way. Elf/gcc
|
||||
** (versions 3.2 and later) mark them as "hidden" to optimize access
|
||||
** when Lua is compiled as a shared library. Not all elf targets support
|
||||
** this attribute. Unfortunately, gcc does not offer a way to check
|
||||
** whether the target offers that support, and those without support
|
||||
** give a warning about it. To avoid these warnings, change to the
|
||||
** default definition.
|
||||
*/
|
||||
#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
|
||||
defined(__ELF__) /* { */
|
||||
#define LUAI_FUNC __attribute__((visibility("hidden"))) extern
|
||||
#else /* }{ */
|
||||
#define LUAI_FUNC extern
|
||||
#endif /* } */
|
||||
|
||||
#define LUAI_DDEC LUAI_FUNC
|
||||
#define LUAI_DDEF /* empty */
|
||||
|
||||
/* }================================================================== */
|
||||
|
||||
|
||||
/*
|
||||
** {==================================================================
|
||||
** Compatibility with previous versions
|
||||
** ===================================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
@@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2.
|
||||
@@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1.
|
||||
** You can define it to get all options, or change specific options
|
||||
** to fit your specific needs.
|
||||
*/
|
||||
#if defined(LUA_COMPAT_5_2) /* { */
|
||||
|
||||
/*
|
||||
@@ LUA_COMPAT_MATHLIB controls the presence of several deprecated
|
||||
** functions in the mathematical library.
|
||||
*/
|
||||
#define LUA_COMPAT_MATHLIB
|
||||
|
||||
/*
|
||||
@@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'.
|
||||
*/
|
||||
#define LUA_COMPAT_BITLIB
|
||||
|
||||
/*
|
||||
@@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod.
|
||||
*/
|
||||
#define LUA_COMPAT_IPAIRS
|
||||
|
||||
/*
|
||||
@@ LUA_COMPAT_APIINTCASTS controls the presence of macros for
|
||||
** manipulating other integer types (lua_pushunsigned, lua_tounsigned,
|
||||
** luaL_checkint, luaL_checklong, etc.)
|
||||
*/
|
||||
#define LUA_COMPAT_APIINTCASTS
|
||||
|
||||
|
||||
/*
|
||||
@@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a
|
||||
@@ a float mark ('.0').
|
||||
** This macro is not on by default even in compatibility mode,
|
||||
** because this is not really an incompatibility.
|
||||
*/
|
||||
/* #define LUA_COMPAT_FLOATSTRING */
|
||||
|
||||
#endif /* } */
|
||||
|
||||
|
||||
#if defined(LUA_COMPAT_5_1) /* { */
|
||||
|
||||
/*
|
||||
@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
|
||||
** You can replace it with 'table.unpack'.
|
||||
*/
|
||||
#define LUA_COMPAT_UNPACK
|
||||
|
||||
/*
|
||||
@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
|
||||
** You can replace it with 'package.searchers'.
|
||||
*/
|
||||
#define LUA_COMPAT_LOADERS
|
||||
|
||||
/*
|
||||
@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
|
||||
** You can call your C function directly (with light C functions).
|
||||
*/
|
||||
#define lua_cpcall(L,f,u) \
|
||||
(lua_pushcfunction(L, (f)), \
|
||||
lua_pushlightuserdata(L,(u)), \
|
||||
lua_pcall(L,1,0,0))
|
||||
|
||||
|
||||
/*
|
||||
@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
|
||||
** You can rewrite 'log10(x)' as 'log(x, 10)'.
|
||||
*/
|
||||
#define LUA_COMPAT_LOG10
|
||||
|
||||
/*
|
||||
@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
|
||||
** library. You can rewrite 'loadstring(s)' as 'load(s)'.
|
||||
*/
|
||||
#define LUA_COMPAT_LOADSTRING
|
||||
|
||||
/*
|
||||
@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
|
||||
*/
|
||||
#define LUA_COMPAT_MAXN
|
||||
|
||||
/*
|
||||
@@ The following macros supply trivial compatibility for some
|
||||
** changes in the API. The macros themselves document how to
|
||||
** change your code to avoid using them.
|
||||
*/
|
||||
#define lua_strlen(L,i) lua_rawlen(L, (i))
|
||||
|
||||
#define lua_objlen(L,i) lua_rawlen(L, (i))
|
||||
|
||||
#define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ)
|
||||
#define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT)
|
||||
|
||||
/*
|
||||
@@ LUA_COMPAT_MODULE controls compatibility with previous
|
||||
** module functions 'module' (Lua) and 'luaL_register' (C).
|
||||
*/
|
||||
#define LUA_COMPAT_MODULE
|
||||
|
||||
#endif /* } */
|
||||
|
||||
/* }================================================================== */
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** {==================================================================
|
||||
** Configuration for Numbers.
|
||||
** Change these definitions if no predefined LUA_REAL_* / LUA_INT_*
|
||||
** satisfy your needs.
|
||||
** ===================================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
@@ LUA_NUMBER is the floating-point type used by Lua.
|
||||
**
|
||||
@@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
|
||||
@@ over a floating number.
|
||||
**
|
||||
@@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
|
||||
@@ LUA_NUMBER_FMT is the format for writing floats.
|
||||
@@ lua_number2str converts a float to a string.
|
||||
**
|
||||
@@ l_mathop allows the addition of an 'l' or 'f' to all math operations.
|
||||
**
|
||||
@@ lua_str2number converts a decimal numeric string to a number.
|
||||
*/
|
||||
|
||||
#if defined(LUA_REAL_FLOAT) /* { single float */
|
||||
|
||||
#define LUA_NUMBER float
|
||||
|
||||
#define LUAI_UACNUMBER double
|
||||
|
||||
#define LUA_NUMBER_FRMLEN ""
|
||||
#define LUA_NUMBER_FMT "%.7g"
|
||||
|
||||
#define l_mathop(op) op##f
|
||||
|
||||
#define lua_str2number(s,p) strtof((s), (p))
|
||||
|
||||
|
||||
#elif defined(LUA_REAL_LONGDOUBLE) /* }{ long double */
|
||||
|
||||
#define LUA_NUMBER long double
|
||||
|
||||
#define LUAI_UACNUMBER long double
|
||||
|
||||
#define LUA_NUMBER_FRMLEN "L"
|
||||
#define LUA_NUMBER_FMT "%.19Lg"
|
||||
|
||||
#define l_mathop(op) op##l
|
||||
|
||||
#define lua_str2number(s,p) strtold((s), (p))
|
||||
|
||||
#elif defined(LUA_REAL_DOUBLE) /* }{ double */
|
||||
|
||||
#define LUA_NUMBER double
|
||||
|
||||
#define LUAI_UACNUMBER double
|
||||
|
||||
#define LUA_NUMBER_FRMLEN ""
|
||||
#define LUA_NUMBER_FMT "%.14g"
|
||||
|
||||
#define l_mathop(op) op
|
||||
|
||||
#define lua_str2number(s,p) strtod((s), (p))
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
#error "numeric real type not defined"
|
||||
|
||||
#endif /* } */
|
||||
|
||||
|
||||
#define l_floor(x) (l_mathop(floor)(x))
|
||||
|
||||
#define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n))
|
||||
|
||||
|
||||
/*
|
||||
@@ lua_numbertointeger converts a float number to an integer, or
|
||||
** returns 0 if float is not within the range of a lua_Integer.
|
||||
** (The range comparisons are tricky because of rounding. The tests
|
||||
** here assume a two-complement representation, where MININTEGER always
|
||||
** has an exact representation as a float; MAXINTEGER may not have one,
|
||||
** and therefore its conversion to float may have an ill-defined value.)
|
||||
*/
|
||||
#define lua_numbertointeger(n,p) \
|
||||
((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
|
||||
(n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
|
||||
(*(p) = (LUA_INTEGER)(n), 1))
|
||||
|
||||
|
||||
/*
|
||||
@@ The luai_num* macros define the primitive operations over numbers.
|
||||
** They should work for any size of floating numbers.
|
||||
*/
|
||||
|
||||
/* the following operations need the math library */
|
||||
#if defined(lobject_c) || defined(lvm_c)
|
||||
#include <math.h>
|
||||
|
||||
/* floor division (defined as 'floor(a/b)') */
|
||||
#define luai_numidiv(L,a,b) ((void)L, l_mathop(floor)((a)/(b)))
|
||||
|
||||
/*
|
||||
** module: defined as 'a - floor(a/b)*b'; the previous definition gives
|
||||
** NaN when 'b' is huge, but the result should be 'a'. 'fmod' gives the
|
||||
** result of 'a - trunc(a/b)*b', and therefore must be corrected when
|
||||
** 'trunc(a/b) ~= floor(a/b)'. That happens when the division has a
|
||||
** non-integer negative result, which is equivalent to the test below
|
||||
*/
|
||||
#define luai_nummod(L,a,b,m) \
|
||||
{ (m) = l_mathop(fmod)(a,b); if ((m)*(b) < 0) (m) += (b); }
|
||||
|
||||
/* exponentiation */
|
||||
#define luai_numpow(L,a,b) ((void)L, l_mathop(pow)(a,b))
|
||||
|
||||
#endif
|
||||
|
||||
/* these are quite standard operations */
|
||||
#if defined(LUA_CORE)
|
||||
#define luai_numadd(L,a,b) ((a)+(b))
|
||||
#define luai_numsub(L,a,b) ((a)-(b))
|
||||
#define luai_nummul(L,a,b) ((a)*(b))
|
||||
#define luai_numdiv(L,a,b) ((a)/(b))
|
||||
#define luai_numunm(L,a) (-(a))
|
||||
#define luai_numeq(a,b) ((a)==(b))
|
||||
#define luai_numlt(a,b) ((a)<(b))
|
||||
#define luai_numle(a,b) ((a)<=(b))
|
||||
#define luai_numisnan(a) (!luai_numeq((a), (a)))
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** The following macro checks whether an operation is not safe to be
|
||||
** performed by the constant folder. It should result in zero only if
|
||||
** the operation is safe.
|
||||
*/
|
||||
#define luai_numinvalidop(op,a,b) 0
|
||||
|
||||
|
||||
/*
|
||||
@@ LUA_INTEGER is the integer type used by Lua.
|
||||
**
|
||||
@@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
|
||||
**
|
||||
@@ LUAI_UACINT is the result of an 'usual argument conversion'
|
||||
@@ over a lUA_INTEGER.
|
||||
@@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
|
||||
@@ LUA_INTEGER_FMT is the format for writing integers.
|
||||
@@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.
|
||||
@@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.
|
||||
@@ lua_integer2str converts an integer to a string.
|
||||
*/
|
||||
|
||||
|
||||
/* The following definitions are good for most cases here */
|
||||
|
||||
#define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d"
|
||||
#define lua_integer2str(s,n) sprintf((s), LUA_INTEGER_FMT, (n))
|
||||
|
||||
#define LUAI_UACINT LUA_INTEGER
|
||||
|
||||
/*
|
||||
** use LUAI_UACINT here to avoid problems with promotions (which
|
||||
** can turn a comparison between unsigneds into a signed comparison)
|
||||
*/
|
||||
#define LUA_UNSIGNED unsigned LUAI_UACINT
|
||||
|
||||
|
||||
/* now the variable definitions */
|
||||
|
||||
#if defined(LUA_INT_INT) /* { int */
|
||||
|
||||
#define LUA_INTEGER int
|
||||
#define LUA_INTEGER_FRMLEN ""
|
||||
|
||||
#define LUA_MAXINTEGER INT_MAX
|
||||
#define LUA_MININTEGER INT_MIN
|
||||
|
||||
#elif defined(LUA_INT_LONG) /* }{ long */
|
||||
|
||||
#define LUA_INTEGER long
|
||||
#define LUA_INTEGER_FRMLEN "l"
|
||||
|
||||
#define LUA_MAXINTEGER LONG_MAX
|
||||
#define LUA_MININTEGER LONG_MIN
|
||||
|
||||
#elif defined(LUA_INT_LONGLONG) /* }{ long long */
|
||||
|
||||
#if defined(LLONG_MAX) /* { */
|
||||
/* use ISO C99 stuff */
|
||||
|
||||
#define LUA_INTEGER long long
|
||||
#define LUA_INTEGER_FRMLEN "ll"
|
||||
|
||||
#define LUA_MAXINTEGER LLONG_MAX
|
||||
#define LUA_MININTEGER LLONG_MIN
|
||||
|
||||
#elif defined(LUA_USE_WINDOWS) /* }{ */
|
||||
/* in Windows, can use specific Windows types */
|
||||
|
||||
#define LUA_INTEGER __int64
|
||||
#define LUA_INTEGER_FRMLEN "I64"
|
||||
|
||||
#define LUA_MAXINTEGER _I64_MAX
|
||||
#define LUA_MININTEGER _I64_MIN
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \
|
||||
or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)"
|
||||
|
||||
#endif /* } */
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
#error "numeric integer type not defined"
|
||||
|
||||
#endif /* } */
|
||||
|
||||
/* }================================================================== */
|
||||
|
||||
|
||||
/*
|
||||
** {==================================================================
|
||||
** Dependencies with C99
|
||||
** ===================================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
@@ lua_strx2number converts an hexadecimal numeric string to a number.
|
||||
** In C99, 'strtod' does both conversions. Otherwise, you can
|
||||
** leave 'lua_strx2number' undefined and Lua will provide its own
|
||||
** implementation.
|
||||
*/
|
||||
#if !defined(LUA_USE_C89)
|
||||
#define lua_strx2number(s,p) lua_str2number(s,p)
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
@@ LUA_USE_AFORMAT allows '%a'/'%A' specifiers in 'string.format'
|
||||
** Enable it if the C function 'printf' supports these specifiers.
|
||||
** (C99 demands it and Windows also supports it.)
|
||||
*/
|
||||
#if !defined(LUA_USE_C89) || defined(LUA_USE_WINDOWS)
|
||||
#define LUA_USE_AFORMAT
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** 'strtof' and 'opf' variants for math functions are not valid in
|
||||
** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the
|
||||
** availability of these variants. ('math.h' is already included in
|
||||
** all files that use these macros.)
|
||||
*/
|
||||
#if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF))
|
||||
#undef l_mathop /* variants not available */
|
||||
#undef lua_str2number
|
||||
#define l_mathop(op) (lua_Number)op /* no variant */
|
||||
#define lua_str2number(s,p) ((lua_Number)strtod((s), (p)))
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
@@ LUA_KCONTEXT is the type of the context ('ctx') for continuation
|
||||
** functions. It must be a numerical type; Lua will use 'intptr_t' if
|
||||
** available, otherwise it will use 'ptrdiff_t' (the nearest thing to
|
||||
** 'intptr_t' in C89)
|
||||
*/
|
||||
#define LUA_KCONTEXT ptrdiff_t
|
||||
|
||||
#if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \
|
||||
__STDC_VERSION__ >= 199901L
|
||||
#include <stdint.h>
|
||||
#if defined (INTPTR_MAX) /* even in C99 this type is optional */
|
||||
#undef LUA_KCONTEXT
|
||||
#define LUA_KCONTEXT intptr_t
|
||||
#endif
|
||||
#endif
|
||||
|
||||
/* }================================================================== */
|
||||
|
||||
|
||||
/*
|
||||
** {==================================================================
|
||||
** Macros that affect the API and must be stable (that is, must be the
|
||||
** same when you compile Lua and when you compile code that links to
|
||||
** Lua). You probably do not want/need to change them.
|
||||
** =====================================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
@@ LUAI_MAXSTACK limits the size of the Lua stack.
|
||||
** CHANGE it if you need a different limit. This limit is arbitrary;
|
||||
** its only purpose is to stop Lua from consuming unlimited stack
|
||||
** space (and to reserve some numbers for pseudo-indices).
|
||||
*/
|
||||
#if LUAI_BITSINT >= 32
|
||||
#define LUAI_MAXSTACK 1000000
|
||||
#else
|
||||
#define LUAI_MAXSTACK 15000
|
||||
#endif
|
||||
|
||||
/* reserve some space for error handling */
|
||||
#define LUAI_FIRSTPSEUDOIDX (-LUAI_MAXSTACK - 1000)
|
||||
|
||||
|
||||
/*
|
||||
@@ LUA_EXTRASPACE defines the size of a raw memory area associated with
|
||||
** a Lua state with very fast access.
|
||||
** CHANGE it if you need a different size.
|
||||
*/
|
||||
#define LUA_EXTRASPACE (sizeof(void *))
|
||||
|
||||
|
||||
/*
|
||||
@@ LUA_IDSIZE gives the maximum size for the description of the source
|
||||
@@ of a function in debug information.
|
||||
** CHANGE it if you want a different size.
|
||||
*/
|
||||
#define LUA_IDSIZE 60
|
||||
|
||||
|
||||
/*
|
||||
@@ LUAI_MAXSHORTLEN is the maximum length for short strings, that is,
|
||||
** strings that are internalized. (Cannot be smaller than reserved words
|
||||
** or tags for metamethods, as these strings must be internalized;
|
||||
** #("function") = 8, #("__newindex") = 10.)
|
||||
*/
|
||||
#define LUAI_MAXSHORTLEN 40
|
||||
|
||||
|
||||
/*
|
||||
@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
|
||||
** CHANGE it if it uses too much C-stack space.
|
||||
*/
|
||||
#define LUAL_BUFFERSIZE ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer)))
|
||||
|
||||
/* }================================================================== */
|
||||
|
||||
|
||||
/*
|
||||
@@ LUA_QL describes how error messages quote program elements.
|
||||
** Lua does not use these macros anymore; they are here for
|
||||
** compatibility only.
|
||||
*/
|
||||
#define LUA_QL(x) "'" x "'"
|
||||
#define LUA_QS LUA_QL("%s")
|
||||
|
||||
|
||||
|
||||
|
||||
/* =================================================================== */
|
||||
|
||||
/*
|
||||
** Local configuration. You can use this space to add your redefinitions
|
||||
** without modifying the main part of the file.
|
||||
*/
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
@ -0,0 +1,58 @@
|
||||
/*
|
||||
** $Id: lualib.h,v 1.44 2014/02/06 17:32:33 roberto Exp $
|
||||
** Lua standard libraries
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
|
||||
#ifndef lualib_h
|
||||
#define lualib_h
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
|
||||
|
||||
LUAMOD_API int (luaopen_base) (lua_State *L);
|
||||
|
||||
#define LUA_COLIBNAME "coroutine"
|
||||
LUAMOD_API int (luaopen_coroutine) (lua_State *L);
|
||||
|
||||
#define LUA_TABLIBNAME "table"
|
||||
LUAMOD_API int (luaopen_table) (lua_State *L);
|
||||
|
||||
#define LUA_IOLIBNAME "io"
|
||||
LUAMOD_API int (luaopen_io) (lua_State *L);
|
||||
|
||||
#define LUA_OSLIBNAME "os"
|
||||
LUAMOD_API int (luaopen_os) (lua_State *L);
|
||||
|
||||
#define LUA_STRLIBNAME "string"
|
||||
LUAMOD_API int (luaopen_string) (lua_State *L);
|
||||
|
||||
#define LUA_UTF8LIBNAME "utf8"
|
||||
LUAMOD_API int (luaopen_utf8) (lua_State *L);
|
||||
|
||||
#define LUA_BITLIBNAME "bit32"
|
||||
LUAMOD_API int (luaopen_bit32) (lua_State *L);
|
||||
|
||||
#define LUA_MATHLIBNAME "math"
|
||||
LUAMOD_API int (luaopen_math) (lua_State *L);
|
||||
|
||||
#define LUA_DBLIBNAME "debug"
|
||||
LUAMOD_API int (luaopen_debug) (lua_State *L);
|
||||
|
||||
#define LUA_LOADLIBNAME "package"
|
||||
LUAMOD_API int (luaopen_package) (lua_State *L);
|
||||
|
||||
|
||||
/* open all previous libraries */
|
||||
LUALIB_API void (luaL_openlibs) (lua_State *L);
|
||||
|
||||
|
||||
|
||||
#if !defined(lua_assert)
|
||||
#define lua_assert(x) ((void)0)
|
||||
#endif
|
||||
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,33 @@
|
||||
/*
|
||||
** $Id: lundump.h,v 1.44 2014/06/19 18:27:20 roberto Exp $
|
||||
** load precompiled Lua chunks
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef lundump_h
|
||||
#define lundump_h
|
||||
|
||||
#include "llimits.h"
|
||||
#include "lobject.h"
|
||||
#include "lzio.h"
|
||||
|
||||
|
||||
/* data to catch conversion errors */
|
||||
#define LUAC_DATA "\x19\x93\r\n\x1a\n"
|
||||
|
||||
#define LUAC_INT 0x5678
|
||||
#define LUAC_NUM cast_num(370.5)
|
||||
|
||||
#define MYINT(s) (s[0]-'0')
|
||||
#define LUAC_VERSION (MYINT(LUA_VERSION_MAJOR)*16+MYINT(LUA_VERSION_MINOR))
|
||||
#define LUAC_FORMAT 0 /* this is the official format */
|
||||
|
||||
/* load one chunk; from lundump.c */
|
||||
LUAI_FUNC LClosure* luaU_undump (lua_State* L, ZIO* Z, Mbuffer* buff,
|
||||
const char* name);
|
||||
|
||||
/* dump one chunk; from ldump.c */
|
||||
LUAI_FUNC int luaU_dump (lua_State* L, const Proto* f, lua_Writer w,
|
||||
void* data, int strip);
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,58 @@
|
||||
/*
|
||||
** $Id: lvm.h,v 2.34 2014/08/01 17:24:02 roberto Exp $
|
||||
** Lua virtual machine
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#ifndef lvm_h
|
||||
#define lvm_h
|
||||
|
||||
|
||||
#include "ldo.h"
|
||||
#include "lobject.h"
|
||||
#include "ltm.h"
|
||||
|
||||
|
||||
#if !defined(LUA_NOCVTN2S)
|
||||
#define cvt2str(o) ttisnumber(o)
|
||||
#else
|
||||
#define cvt2str(o) 0 /* no conversion from numbers to strings */
|
||||
#endif
|
||||
|
||||
|
||||
#if !defined(LUA_NOCVTS2N)
|
||||
#define cvt2num(o) ttisstring(o)
|
||||
#else
|
||||
#define cvt2num(o) 0 /* no conversion from strings to numbers */
|
||||
#endif
|
||||
|
||||
|
||||
#define tonumber(o,n) \
|
||||
(ttisfloat(o) ? (*(n) = fltvalue(o), 1) : luaV_tonumber_(o,n))
|
||||
|
||||
#define tointeger(o,i) \
|
||||
(ttisinteger(o) ? (*(i) = ivalue(o), 1) : luaV_tointeger_(o,i))
|
||||
|
||||
#define intop(op,v1,v2) l_castU2S(l_castS2U(v1) op l_castS2U(v2))
|
||||
|
||||
#define luaV_rawequalobj(t1,t2) luaV_equalobj(NULL,t1,t2)
|
||||
|
||||
|
||||
LUAI_FUNC int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2);
|
||||
LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r);
|
||||
LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r);
|
||||
LUAI_FUNC int luaV_tonumber_ (const TValue *obj, lua_Number *n);
|
||||
LUAI_FUNC int luaV_tointeger_ (const TValue *obj, lua_Integer *p);
|
||||
LUAI_FUNC void luaV_gettable (lua_State *L, const TValue *t, TValue *key,
|
||||
StkId val);
|
||||
LUAI_FUNC void luaV_settable (lua_State *L, const TValue *t, TValue *key,
|
||||
StkId val);
|
||||
LUAI_FUNC void luaV_finishOp (lua_State *L);
|
||||
LUAI_FUNC void luaV_execute (lua_State *L);
|
||||
LUAI_FUNC void luaV_concat (lua_State *L, int total);
|
||||
LUAI_FUNC lua_Integer luaV_div (lua_State *L, lua_Integer x, lua_Integer y);
|
||||
LUAI_FUNC lua_Integer luaV_mod (lua_State *L, lua_Integer x, lua_Integer y);
|
||||
LUAI_FUNC lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y);
|
||||
LUAI_FUNC void luaV_objlen (lua_State *L, StkId ra, const TValue *rb);
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,67 @@
|
||||
/*
|
||||
** $Id: lzio.h,v 1.30 2014/12/19 17:26:14 roberto Exp $
|
||||
** Buffered streams
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
|
||||
#ifndef lzio_h
|
||||
#define lzio_h
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lmem.h"
|
||||
|
||||
|
||||
#define EOZ (-1) /* end of stream */
|
||||
|
||||
typedef struct Zio ZIO;
|
||||
|
||||
#define zgetc(z) (((z)->n--)>0 ? cast_uchar(*(z)->p++) : luaZ_fill(z))
|
||||
|
||||
|
||||
typedef struct Mbuffer {
|
||||
char *buffer;
|
||||
size_t n;
|
||||
size_t buffsize;
|
||||
} Mbuffer;
|
||||
|
||||
#define luaZ_initbuffer(L, buff) ((buff)->buffer = NULL, (buff)->buffsize = 0)
|
||||
|
||||
#define luaZ_buffer(buff) ((buff)->buffer)
|
||||
#define luaZ_sizebuffer(buff) ((buff)->buffsize)
|
||||
#define luaZ_bufflen(buff) ((buff)->n)
|
||||
|
||||
#define luaZ_buffremove(buff,i) ((buff)->n -= (i))
|
||||
#define luaZ_resetbuffer(buff) ((buff)->n = 0)
|
||||
|
||||
|
||||
#define luaZ_resizebuffer(L, buff, size) \
|
||||
((buff)->buffer = luaM_reallocvchar(L, (buff)->buffer, \
|
||||
(buff)->buffsize, size), \
|
||||
(buff)->buffsize = size)
|
||||
|
||||
#define luaZ_freebuffer(L, buff) luaZ_resizebuffer(L, buff, 0)
|
||||
|
||||
|
||||
LUAI_FUNC char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n);
|
||||
LUAI_FUNC void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader,
|
||||
void *data);
|
||||
LUAI_FUNC size_t luaZ_read (ZIO* z, void *b, size_t n); /* read next n bytes */
|
||||
|
||||
|
||||
|
||||
/* --------- Private Part ------------------ */
|
||||
|
||||
struct Zio {
|
||||
size_t n; /* bytes still unread */
|
||||
const char *p; /* current position in buffer */
|
||||
lua_Reader reader; /* reader function */
|
||||
void *data; /* additional data */
|
||||
lua_State *L; /* Lua state (for reader) */
|
||||
};
|
||||
|
||||
|
||||
LUAI_FUNC int luaZ_fill (ZIO *z);
|
||||
|
||||
#endif
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,972 @@
|
||||
/*
|
||||
** $Id: lauxlib.c,v 1.279 2014/12/14 18:32:26 roberto Exp $
|
||||
** Auxiliary functions for building Lua libraries
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lauxlib_c
|
||||
#define LUA_LIB
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <errno.h>
|
||||
#include <stdarg.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
|
||||
/* This file uses only the official API of Lua.
|
||||
** Any function declared here could be written as an application function.
|
||||
*/
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lauxlib.h"
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Traceback
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
|
||||
#define LEVELS1 12 /* size of the first part of the stack */
|
||||
#define LEVELS2 10 /* size of the second part of the stack */
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** search for 'objidx' in table at index -1.
|
||||
** return 1 + string at top if find a good name.
|
||||
*/
|
||||
static int findfield (lua_State *L, int objidx, int level) {
|
||||
if (level == 0 || !lua_istable(L, -1))
|
||||
return 0; /* not found */
|
||||
lua_pushnil(L); /* start 'next' loop */
|
||||
while (lua_next(L, -2)) { /* for each pair in table */
|
||||
if (lua_type(L, -2) == LUA_TSTRING) { /* ignore non-string keys */
|
||||
if (lua_rawequal(L, objidx, -1)) { /* found object? */
|
||||
lua_pop(L, 1); /* remove value (but keep name) */
|
||||
return 1;
|
||||
}
|
||||
else if (findfield(L, objidx, level - 1)) { /* try recursively */
|
||||
lua_remove(L, -2); /* remove table (but keep name) */
|
||||
lua_pushliteral(L, ".");
|
||||
lua_insert(L, -2); /* place '.' between the two names */
|
||||
lua_concat(L, 3);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
lua_pop(L, 1); /* remove value */
|
||||
}
|
||||
return 0; /* not found */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Search for a name for a function in all loaded modules
|
||||
** (registry._LOADED).
|
||||
*/
|
||||
static int pushglobalfuncname (lua_State *L, lua_Debug *ar) {
|
||||
int top = lua_gettop(L);
|
||||
lua_getinfo(L, "f", ar); /* push function */
|
||||
lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");
|
||||
if (findfield(L, top + 1, 2)) {
|
||||
const char *name = lua_tostring(L, -1);
|
||||
if (strncmp(name, "_G.", 3) == 0) { /* name start with '_G.'? */
|
||||
lua_pushstring(L, name + 3); /* push name without prefix */
|
||||
lua_remove(L, -2); /* remove original name */
|
||||
}
|
||||
lua_copy(L, -1, top + 1); /* move name to proper place */
|
||||
lua_pop(L, 2); /* remove pushed values */
|
||||
return 1;
|
||||
}
|
||||
else {
|
||||
lua_settop(L, top); /* remove function and global table */
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void pushfuncname (lua_State *L, lua_Debug *ar) {
|
||||
if (pushglobalfuncname(L, ar)) { /* try first a global name */
|
||||
lua_pushfstring(L, "function '%s'", lua_tostring(L, -1));
|
||||
lua_remove(L, -2); /* remove name */
|
||||
}
|
||||
else if (*ar->namewhat != '\0') /* is there a name from code? */
|
||||
lua_pushfstring(L, "%s '%s'", ar->namewhat, ar->name); /* use it */
|
||||
else if (*ar->what == 'm') /* main? */
|
||||
lua_pushliteral(L, "main chunk");
|
||||
else if (*ar->what != 'C') /* for Lua functions, use <file:line> */
|
||||
lua_pushfstring(L, "function <%s:%d>", ar->short_src, ar->linedefined);
|
||||
else /* nothing left... */
|
||||
lua_pushliteral(L, "?");
|
||||
}
|
||||
|
||||
|
||||
static int countlevels (lua_State *L) {
|
||||
lua_Debug ar;
|
||||
int li = 1, le = 1;
|
||||
/* find an upper bound */
|
||||
while (lua_getstack(L, le, &ar)) { li = le; le *= 2; }
|
||||
/* do a binary search */
|
||||
while (li < le) {
|
||||
int m = (li + le)/2;
|
||||
if (lua_getstack(L, m, &ar)) li = m + 1;
|
||||
else le = m;
|
||||
}
|
||||
return le - 1;
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_traceback (lua_State *L, lua_State *L1,
|
||||
const char *msg, int level) {
|
||||
lua_Debug ar;
|
||||
int top = lua_gettop(L);
|
||||
int numlevels = countlevels(L1);
|
||||
int mark = (numlevels > LEVELS1 + LEVELS2) ? LEVELS1 : 0;
|
||||
if (msg) lua_pushfstring(L, "%s\n", msg);
|
||||
lua_pushliteral(L, "stack traceback:");
|
||||
while (lua_getstack(L1, level++, &ar)) {
|
||||
if (level == mark) { /* too many levels? */
|
||||
lua_pushliteral(L, "\n\t..."); /* add a '...' */
|
||||
level = numlevels - LEVELS2; /* and skip to last ones */
|
||||
}
|
||||
else {
|
||||
lua_getinfo(L1, "Slnt", &ar);
|
||||
lua_pushfstring(L, "\n\t%s:", ar.short_src);
|
||||
if (ar.currentline > 0)
|
||||
lua_pushfstring(L, "%d:", ar.currentline);
|
||||
lua_pushliteral(L, " in ");
|
||||
pushfuncname(L, &ar);
|
||||
if (ar.istailcall)
|
||||
lua_pushliteral(L, "\n\t(...tail calls...)");
|
||||
lua_concat(L, lua_gettop(L) - top);
|
||||
}
|
||||
}
|
||||
lua_concat(L, lua_gettop(L) - top);
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Error-report functions
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
LUALIB_API int luaL_argerror (lua_State *L, int arg, const char *extramsg) {
|
||||
lua_Debug ar;
|
||||
if (!lua_getstack(L, 0, &ar)) /* no stack frame? */
|
||||
return luaL_error(L, "bad argument #%d (%s)", arg, extramsg);
|
||||
lua_getinfo(L, "n", &ar);
|
||||
if (strcmp(ar.namewhat, "method") == 0) {
|
||||
arg--; /* do not count 'self' */
|
||||
if (arg == 0) /* error is in the self argument itself? */
|
||||
return luaL_error(L, "calling '%s' on bad self (%s)",
|
||||
ar.name, extramsg);
|
||||
}
|
||||
if (ar.name == NULL)
|
||||
ar.name = (pushglobalfuncname(L, &ar)) ? lua_tostring(L, -1) : "?";
|
||||
return luaL_error(L, "bad argument #%d to '%s' (%s)",
|
||||
arg, ar.name, extramsg);
|
||||
}
|
||||
|
||||
|
||||
static int typeerror (lua_State *L, int arg, const char *tname) {
|
||||
const char *msg;
|
||||
const char *typearg; /* name for the type of the actual argument */
|
||||
if (luaL_getmetafield(L, arg, "__name") == LUA_TSTRING)
|
||||
typearg = lua_tostring(L, -1); /* use the given type name */
|
||||
else if (lua_type(L, arg) == LUA_TLIGHTUSERDATA)
|
||||
typearg = "light userdata"; /* special name for messages */
|
||||
else
|
||||
typearg = luaL_typename(L, arg); /* standard name */
|
||||
msg = lua_pushfstring(L, "%s expected, got %s", tname, typearg);
|
||||
return luaL_argerror(L, arg, msg);
|
||||
}
|
||||
|
||||
|
||||
static void tag_error (lua_State *L, int arg, int tag) {
|
||||
typeerror(L, arg, lua_typename(L, tag));
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_where (lua_State *L, int level) {
|
||||
lua_Debug ar;
|
||||
if (lua_getstack(L, level, &ar)) { /* check function at level */
|
||||
lua_getinfo(L, "Sl", &ar); /* get info about it */
|
||||
if (ar.currentline > 0) { /* is there info? */
|
||||
lua_pushfstring(L, "%s:%d: ", ar.short_src, ar.currentline);
|
||||
return;
|
||||
}
|
||||
}
|
||||
lua_pushliteral(L, ""); /* else, no information available... */
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...) {
|
||||
va_list argp;
|
||||
va_start(argp, fmt);
|
||||
luaL_where(L, 1);
|
||||
lua_pushvfstring(L, fmt, argp);
|
||||
va_end(argp);
|
||||
lua_concat(L, 2);
|
||||
return lua_error(L);
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API int luaL_fileresult (lua_State *L, int stat, const char *fname) {
|
||||
int en = errno; /* calls to Lua API may change this value */
|
||||
if (stat) {
|
||||
lua_pushboolean(L, 1);
|
||||
return 1;
|
||||
}
|
||||
else {
|
||||
lua_pushnil(L);
|
||||
if (fname)
|
||||
lua_pushfstring(L, "%s: %s", fname, strerror(en));
|
||||
else
|
||||
lua_pushstring(L, strerror(en));
|
||||
lua_pushinteger(L, en);
|
||||
return 3;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#if !defined(l_inspectstat) /* { */
|
||||
|
||||
#if defined(LUA_USE_POSIX)
|
||||
|
||||
#include <sys/wait.h>
|
||||
|
||||
/*
|
||||
** use appropriate macros to interpret 'pclose' return status
|
||||
*/
|
||||
#define l_inspectstat(stat,what) \
|
||||
if (WIFEXITED(stat)) { stat = WEXITSTATUS(stat); } \
|
||||
else if (WIFSIGNALED(stat)) { stat = WTERMSIG(stat); what = "signal"; }
|
||||
|
||||
#else
|
||||
|
||||
#define l_inspectstat(stat,what) /* no op */
|
||||
|
||||
#endif
|
||||
|
||||
#endif /* } */
|
||||
|
||||
|
||||
LUALIB_API int luaL_execresult (lua_State *L, int stat) {
|
||||
const char *what = "exit"; /* type of termination */
|
||||
if (stat == -1) /* error? */
|
||||
return luaL_fileresult(L, 0, NULL);
|
||||
else {
|
||||
l_inspectstat(stat, what); /* interpret result */
|
||||
if (*what == 'e' && stat == 0) /* successful termination? */
|
||||
lua_pushboolean(L, 1);
|
||||
else
|
||||
lua_pushnil(L);
|
||||
lua_pushstring(L, what);
|
||||
lua_pushinteger(L, stat);
|
||||
return 3; /* return true/nil,what,code */
|
||||
}
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Userdata's metatable manipulation
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
LUALIB_API int luaL_newmetatable (lua_State *L, const char *tname) {
|
||||
if (luaL_getmetatable(L, tname)) /* name already in use? */
|
||||
return 0; /* leave previous value on top, but return 0 */
|
||||
lua_pop(L, 1);
|
||||
lua_newtable(L); /* create metatable */
|
||||
lua_pushstring(L, tname);
|
||||
lua_setfield(L, -2, "__name"); /* metatable.__name = tname */
|
||||
lua_pushvalue(L, -1);
|
||||
lua_setfield(L, LUA_REGISTRYINDEX, tname); /* registry.name = metatable */
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_setmetatable (lua_State *L, const char *tname) {
|
||||
luaL_getmetatable(L, tname);
|
||||
lua_setmetatable(L, -2);
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void *luaL_testudata (lua_State *L, int ud, const char *tname) {
|
||||
void *p = lua_touserdata(L, ud);
|
||||
if (p != NULL) { /* value is a userdata? */
|
||||
if (lua_getmetatable(L, ud)) { /* does it have a metatable? */
|
||||
luaL_getmetatable(L, tname); /* get correct metatable */
|
||||
if (!lua_rawequal(L, -1, -2)) /* not the same? */
|
||||
p = NULL; /* value is a userdata with wrong metatable */
|
||||
lua_pop(L, 2); /* remove both metatables */
|
||||
return p;
|
||||
}
|
||||
}
|
||||
return NULL; /* value is not a userdata with a metatable */
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void *luaL_checkudata (lua_State *L, int ud, const char *tname) {
|
||||
void *p = luaL_testudata(L, ud, tname);
|
||||
if (p == NULL) typeerror(L, ud, tname);
|
||||
return p;
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Argument check functions
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
LUALIB_API int luaL_checkoption (lua_State *L, int arg, const char *def,
|
||||
const char *const lst[]) {
|
||||
const char *name = (def) ? luaL_optstring(L, arg, def) :
|
||||
luaL_checkstring(L, arg);
|
||||
int i;
|
||||
for (i=0; lst[i]; i++)
|
||||
if (strcmp(lst[i], name) == 0)
|
||||
return i;
|
||||
return luaL_argerror(L, arg,
|
||||
lua_pushfstring(L, "invalid option '%s'", name));
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_checkstack (lua_State *L, int space, const char *msg) {
|
||||
/* keep some extra space to run error routines, if needed */
|
||||
const int extra = LUA_MINSTACK;
|
||||
if (!lua_checkstack(L, space + extra)) {
|
||||
if (msg)
|
||||
luaL_error(L, "stack overflow (%s)", msg);
|
||||
else
|
||||
luaL_error(L, "stack overflow");
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_checktype (lua_State *L, int arg, int t) {
|
||||
if (lua_type(L, arg) != t)
|
||||
tag_error(L, arg, t);
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_checkany (lua_State *L, int arg) {
|
||||
if (lua_type(L, arg) == LUA_TNONE)
|
||||
luaL_argerror(L, arg, "value expected");
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API const char *luaL_checklstring (lua_State *L, int arg, size_t *len) {
|
||||
const char *s = lua_tolstring(L, arg, len);
|
||||
if (!s) tag_error(L, arg, LUA_TSTRING);
|
||||
return s;
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API const char *luaL_optlstring (lua_State *L, int arg,
|
||||
const char *def, size_t *len) {
|
||||
if (lua_isnoneornil(L, arg)) {
|
||||
if (len)
|
||||
*len = (def ? strlen(def) : 0);
|
||||
return def;
|
||||
}
|
||||
else return luaL_checklstring(L, arg, len);
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API lua_Number luaL_checknumber (lua_State *L, int arg) {
|
||||
int isnum;
|
||||
lua_Number d = lua_tonumberx(L, arg, &isnum);
|
||||
if (!isnum)
|
||||
tag_error(L, arg, LUA_TNUMBER);
|
||||
return d;
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API lua_Number luaL_optnumber (lua_State *L, int arg, lua_Number def) {
|
||||
return luaL_opt(L, luaL_checknumber, arg, def);
|
||||
}
|
||||
|
||||
|
||||
static void interror (lua_State *L, int arg) {
|
||||
if (lua_isnumber(L, arg))
|
||||
luaL_argerror(L, arg, "number has no integer representation");
|
||||
else
|
||||
tag_error(L, arg, LUA_TNUMBER);
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API lua_Integer luaL_checkinteger (lua_State *L, int arg) {
|
||||
int isnum;
|
||||
lua_Integer d = lua_tointegerx(L, arg, &isnum);
|
||||
if (!isnum) {
|
||||
interror(L, arg);
|
||||
}
|
||||
return d;
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API lua_Integer luaL_optinteger (lua_State *L, int arg,
|
||||
lua_Integer def) {
|
||||
return luaL_opt(L, luaL_checkinteger, arg, def);
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Generic Buffer manipulation
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
** check whether buffer is using a userdata on the stack as a temporary
|
||||
** buffer
|
||||
*/
|
||||
#define buffonstack(B) ((B)->b != (B)->initb)
|
||||
|
||||
|
||||
/*
|
||||
** returns a pointer to a free area with at least 'sz' bytes
|
||||
*/
|
||||
LUALIB_API char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz) {
|
||||
lua_State *L = B->L;
|
||||
if (B->size - B->n < sz) { /* not enough space? */
|
||||
char *newbuff;
|
||||
size_t newsize = B->size * 2; /* double buffer size */
|
||||
if (newsize - B->n < sz) /* not big enough? */
|
||||
newsize = B->n + sz;
|
||||
if (newsize < B->n || newsize - B->n < sz)
|
||||
luaL_error(L, "buffer too large");
|
||||
/* create larger buffer */
|
||||
newbuff = (char *)lua_newuserdata(L, newsize * sizeof(char));
|
||||
/* move content to new buffer */
|
||||
memcpy(newbuff, B->b, B->n * sizeof(char));
|
||||
if (buffonstack(B))
|
||||
lua_remove(L, -2); /* remove old buffer */
|
||||
B->b = newbuff;
|
||||
B->size = newsize;
|
||||
}
|
||||
return &B->b[B->n];
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l) {
|
||||
char *b = luaL_prepbuffsize(B, l);
|
||||
memcpy(b, s, l * sizeof(char));
|
||||
luaL_addsize(B, l);
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_addstring (luaL_Buffer *B, const char *s) {
|
||||
luaL_addlstring(B, s, strlen(s));
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_pushresult (luaL_Buffer *B) {
|
||||
lua_State *L = B->L;
|
||||
lua_pushlstring(L, B->b, B->n);
|
||||
if (buffonstack(B))
|
||||
lua_remove(L, -2); /* remove old buffer */
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_pushresultsize (luaL_Buffer *B, size_t sz) {
|
||||
luaL_addsize(B, sz);
|
||||
luaL_pushresult(B);
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_addvalue (luaL_Buffer *B) {
|
||||
lua_State *L = B->L;
|
||||
size_t l;
|
||||
const char *s = lua_tolstring(L, -1, &l);
|
||||
if (buffonstack(B))
|
||||
lua_insert(L, -2); /* put value below buffer */
|
||||
luaL_addlstring(B, s, l);
|
||||
lua_remove(L, (buffonstack(B)) ? -2 : -1); /* remove value */
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B) {
|
||||
B->L = L;
|
||||
B->b = B->initb;
|
||||
B->n = 0;
|
||||
B->size = LUAL_BUFFERSIZE;
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API char *luaL_buffinitsize (lua_State *L, luaL_Buffer *B, size_t sz) {
|
||||
luaL_buffinit(L, B);
|
||||
return luaL_prepbuffsize(B, sz);
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Reference system
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
/* index of free-list header */
|
||||
#define freelist 0
|
||||
|
||||
|
||||
LUALIB_API int luaL_ref (lua_State *L, int t) {
|
||||
int ref;
|
||||
if (lua_isnil(L, -1)) {
|
||||
lua_pop(L, 1); /* remove from stack */
|
||||
return LUA_REFNIL; /* 'nil' has a unique fixed reference */
|
||||
}
|
||||
t = lua_absindex(L, t);
|
||||
lua_rawgeti(L, t, freelist); /* get first free element */
|
||||
ref = (int)lua_tointeger(L, -1); /* ref = t[freelist] */
|
||||
lua_pop(L, 1); /* remove it from stack */
|
||||
if (ref != 0) { /* any free element? */
|
||||
lua_rawgeti(L, t, ref); /* remove it from list */
|
||||
lua_rawseti(L, t, freelist); /* (t[freelist] = t[ref]) */
|
||||
}
|
||||
else /* no free elements */
|
||||
ref = (int)lua_rawlen(L, t) + 1; /* get a new reference */
|
||||
lua_rawseti(L, t, ref);
|
||||
return ref;
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_unref (lua_State *L, int t, int ref) {
|
||||
if (ref >= 0) {
|
||||
t = lua_absindex(L, t);
|
||||
lua_rawgeti(L, t, freelist);
|
||||
lua_rawseti(L, t, ref); /* t[ref] = t[freelist] */
|
||||
lua_pushinteger(L, ref);
|
||||
lua_rawseti(L, t, freelist); /* t[freelist] = ref */
|
||||
}
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Load functions
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
typedef struct LoadF {
|
||||
int n; /* number of pre-read characters */
|
||||
FILE *f; /* file being read */
|
||||
char buff[BUFSIZ]; /* area for reading file */
|
||||
} LoadF;
|
||||
|
||||
|
||||
static const char *getF (lua_State *L, void *ud, size_t *size) {
|
||||
LoadF *lf = (LoadF *)ud;
|
||||
(void)L; /* not used */
|
||||
if (lf->n > 0) { /* are there pre-read characters to be read? */
|
||||
*size = lf->n; /* return them (chars already in buffer) */
|
||||
lf->n = 0; /* no more pre-read characters */
|
||||
}
|
||||
else { /* read a block from file */
|
||||
/* 'fread' can return > 0 *and* set the EOF flag. If next call to
|
||||
'getF' called 'fread', it might still wait for user input.
|
||||
The next check avoids this problem. */
|
||||
if (feof(lf->f)) return NULL;
|
||||
*size = fread(lf->buff, 1, sizeof(lf->buff), lf->f); /* read block */
|
||||
}
|
||||
return lf->buff;
|
||||
}
|
||||
|
||||
|
||||
static int errfile (lua_State *L, const char *what, int fnameindex) {
|
||||
const char *serr = strerror(errno);
|
||||
const char *filename = lua_tostring(L, fnameindex) + 1;
|
||||
lua_pushfstring(L, "cannot %s %s: %s", what, filename, serr);
|
||||
lua_remove(L, fnameindex);
|
||||
return LUA_ERRFILE;
|
||||
}
|
||||
|
||||
|
||||
static int skipBOM (LoadF *lf) {
|
||||
const char *p = "\xEF\xBB\xBF"; /* Utf8 BOM mark */
|
||||
int c;
|
||||
lf->n = 0;
|
||||
do {
|
||||
c = getc(lf->f);
|
||||
if (c == EOF || c != *(const unsigned char *)p++) return c;
|
||||
lf->buff[lf->n++] = c; /* to be read by the parser */
|
||||
} while (*p != '\0');
|
||||
lf->n = 0; /* prefix matched; discard it */
|
||||
return getc(lf->f); /* return next character */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** reads the first character of file 'f' and skips an optional BOM mark
|
||||
** in its beginning plus its first line if it starts with '#'. Returns
|
||||
** true if it skipped the first line. In any case, '*cp' has the
|
||||
** first "valid" character of the file (after the optional BOM and
|
||||
** a first-line comment).
|
||||
*/
|
||||
static int skipcomment (LoadF *lf, int *cp) {
|
||||
int c = *cp = skipBOM(lf);
|
||||
if (c == '#') { /* first line is a comment (Unix exec. file)? */
|
||||
do { /* skip first line */
|
||||
c = getc(lf->f);
|
||||
} while (c != EOF && c != '\n') ;
|
||||
*cp = getc(lf->f); /* skip end-of-line, if present */
|
||||
return 1; /* there was a comment */
|
||||
}
|
||||
else return 0; /* no comment */
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API int luaL_loadfilex (lua_State *L, const char *filename,
|
||||
const char *mode) {
|
||||
LoadF lf;
|
||||
int status, readstatus;
|
||||
int c;
|
||||
int fnameindex = lua_gettop(L) + 1; /* index of filename on the stack */
|
||||
if (filename == NULL) {
|
||||
lua_pushliteral(L, "=stdin");
|
||||
lf.f = stdin;
|
||||
}
|
||||
else {
|
||||
lua_pushfstring(L, "@%s", filename);
|
||||
lf.f = fopen(filename, "r");
|
||||
if (lf.f == NULL) return errfile(L, "open", fnameindex);
|
||||
}
|
||||
if (skipcomment(&lf, &c)) /* read initial portion */
|
||||
lf.buff[lf.n++] = '\n'; /* add line to correct line numbers */
|
||||
if (c == LUA_SIGNATURE[0] && filename) { /* binary file? */
|
||||
lf.f = freopen(filename, "rb", lf.f); /* reopen in binary mode */
|
||||
if (lf.f == NULL) return errfile(L, "reopen", fnameindex);
|
||||
skipcomment(&lf, &c); /* re-read initial portion */
|
||||
}
|
||||
if (c != EOF)
|
||||
lf.buff[lf.n++] = c; /* 'c' is the first character of the stream */
|
||||
status = lua_load(L, getF, &lf, lua_tostring(L, -1), mode);
|
||||
readstatus = ferror(lf.f);
|
||||
if (filename) fclose(lf.f); /* close file (even in case of errors) */
|
||||
if (readstatus) {
|
||||
lua_settop(L, fnameindex); /* ignore results from 'lua_load' */
|
||||
return errfile(L, "read", fnameindex);
|
||||
}
|
||||
lua_remove(L, fnameindex);
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
typedef struct LoadS {
|
||||
const char *s;
|
||||
size_t size;
|
||||
} LoadS;
|
||||
|
||||
|
||||
static const char *getS (lua_State *L, void *ud, size_t *size) {
|
||||
LoadS *ls = (LoadS *)ud;
|
||||
(void)L; /* not used */
|
||||
if (ls->size == 0) return NULL;
|
||||
*size = ls->size;
|
||||
ls->size = 0;
|
||||
return ls->s;
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API int luaL_loadbufferx (lua_State *L, const char *buff, size_t size,
|
||||
const char *name, const char *mode) {
|
||||
LoadS ls;
|
||||
ls.s = buff;
|
||||
ls.size = size;
|
||||
return lua_load(L, getS, &ls, name, mode);
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API int luaL_loadstring (lua_State *L, const char *s) {
|
||||
return luaL_loadbuffer(L, s, strlen(s), s);
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
|
||||
LUALIB_API int luaL_getmetafield (lua_State *L, int obj, const char *event) {
|
||||
if (!lua_getmetatable(L, obj)) /* no metatable? */
|
||||
return LUA_TNIL;
|
||||
else {
|
||||
int tt;
|
||||
lua_pushstring(L, event);
|
||||
tt = lua_rawget(L, -2);
|
||||
if (tt == LUA_TNIL) /* is metafield nil? */
|
||||
lua_pop(L, 2); /* remove metatable and metafield */
|
||||
else
|
||||
lua_remove(L, -2); /* remove only metatable */
|
||||
return tt; /* return metafield type */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *event) {
|
||||
obj = lua_absindex(L, obj);
|
||||
if (luaL_getmetafield(L, obj, event) == LUA_TNIL) /* no metafield? */
|
||||
return 0;
|
||||
lua_pushvalue(L, obj);
|
||||
lua_call(L, 1, 1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API lua_Integer luaL_len (lua_State *L, int idx) {
|
||||
lua_Integer l;
|
||||
int isnum;
|
||||
lua_len(L, idx);
|
||||
l = lua_tointegerx(L, -1, &isnum);
|
||||
if (!isnum)
|
||||
luaL_error(L, "object length is not an integer");
|
||||
lua_pop(L, 1); /* remove object */
|
||||
return l;
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) {
|
||||
if (!luaL_callmeta(L, idx, "__tostring")) { /* no metafield? */
|
||||
switch (lua_type(L, idx)) {
|
||||
case LUA_TNUMBER: {
|
||||
if (lua_isinteger(L, idx))
|
||||
lua_pushfstring(L, "%I", lua_tointeger(L, idx));
|
||||
else
|
||||
lua_pushfstring(L, "%f", lua_tonumber(L, idx));
|
||||
break;
|
||||
}
|
||||
case LUA_TSTRING:
|
||||
lua_pushvalue(L, idx);
|
||||
break;
|
||||
case LUA_TBOOLEAN:
|
||||
lua_pushstring(L, (lua_toboolean(L, idx) ? "true" : "false"));
|
||||
break;
|
||||
case LUA_TNIL:
|
||||
lua_pushliteral(L, "nil");
|
||||
break;
|
||||
default:
|
||||
lua_pushfstring(L, "%s: %p", luaL_typename(L, idx),
|
||||
lua_topointer(L, idx));
|
||||
break;
|
||||
}
|
||||
}
|
||||
return lua_tolstring(L, -1, len);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Compatibility with 5.1 module functions
|
||||
** =======================================================
|
||||
*/
|
||||
#if defined(LUA_COMPAT_MODULE)
|
||||
|
||||
static const char *luaL_findtable (lua_State *L, int idx,
|
||||
const char *fname, int szhint) {
|
||||
const char *e;
|
||||
if (idx) lua_pushvalue(L, idx);
|
||||
do {
|
||||
e = strchr(fname, '.');
|
||||
if (e == NULL) e = fname + strlen(fname);
|
||||
lua_pushlstring(L, fname, e - fname);
|
||||
if (lua_rawget(L, -2) == LUA_TNIL) { /* no such field? */
|
||||
lua_pop(L, 1); /* remove this nil */
|
||||
lua_createtable(L, 0, (*e == '.' ? 1 : szhint)); /* new table for field */
|
||||
lua_pushlstring(L, fname, e - fname);
|
||||
lua_pushvalue(L, -2);
|
||||
lua_settable(L, -4); /* set new table into field */
|
||||
}
|
||||
else if (!lua_istable(L, -1)) { /* field has a non-table value? */
|
||||
lua_pop(L, 2); /* remove table and value */
|
||||
return fname; /* return problematic part of the name */
|
||||
}
|
||||
lua_remove(L, -2); /* remove previous table */
|
||||
fname = e + 1;
|
||||
} while (*e == '.');
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Count number of elements in a luaL_Reg list.
|
||||
*/
|
||||
static int libsize (const luaL_Reg *l) {
|
||||
int size = 0;
|
||||
for (; l && l->name; l++) size++;
|
||||
return size;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Find or create a module table with a given name. The function
|
||||
** first looks at the _LOADED table and, if that fails, try a
|
||||
** global variable with that name. In any case, leaves on the stack
|
||||
** the module table.
|
||||
*/
|
||||
LUALIB_API void luaL_pushmodule (lua_State *L, const char *modname,
|
||||
int sizehint) {
|
||||
luaL_findtable(L, LUA_REGISTRYINDEX, "_LOADED", 1); /* get _LOADED table */
|
||||
if (lua_getfield(L, -1, modname) != LUA_TTABLE) { /* no _LOADED[modname]? */
|
||||
lua_pop(L, 1); /* remove previous result */
|
||||
/* try global variable (and create one if it does not exist) */
|
||||
lua_pushglobaltable(L);
|
||||
if (luaL_findtable(L, 0, modname, sizehint) != NULL)
|
||||
luaL_error(L, "name conflict for module '%s'", modname);
|
||||
lua_pushvalue(L, -1);
|
||||
lua_setfield(L, -3, modname); /* _LOADED[modname] = new table */
|
||||
}
|
||||
lua_remove(L, -2); /* remove _LOADED table */
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_openlib (lua_State *L, const char *libname,
|
||||
const luaL_Reg *l, int nup) {
|
||||
luaL_checkversion(L);
|
||||
if (libname) {
|
||||
luaL_pushmodule(L, libname, libsize(l)); /* get/create library table */
|
||||
lua_insert(L, -(nup + 1)); /* move library table to below upvalues */
|
||||
}
|
||||
if (l)
|
||||
luaL_setfuncs(L, l, nup);
|
||||
else
|
||||
lua_pop(L, nup); /* remove upvalues */
|
||||
}
|
||||
|
||||
#endif
|
||||
/* }====================================================== */
|
||||
|
||||
/*
|
||||
** set functions from list 'l' into table at top - 'nup'; each
|
||||
** function gets the 'nup' elements at the top as upvalues.
|
||||
** Returns with only the table at the stack.
|
||||
*/
|
||||
LUALIB_API void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup) {
|
||||
luaL_checkstack(L, nup, "too many upvalues");
|
||||
for (; l->name != NULL; l++) { /* fill the table with given functions */
|
||||
int i;
|
||||
for (i = 0; i < nup; i++) /* copy upvalues to the top */
|
||||
lua_pushvalue(L, -nup);
|
||||
lua_pushcclosure(L, l->func, nup); /* closure with those upvalues */
|
||||
lua_setfield(L, -(nup + 2), l->name);
|
||||
}
|
||||
lua_pop(L, nup); /* remove upvalues */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** ensure that stack[idx][fname] has a table and push that table
|
||||
** into the stack
|
||||
*/
|
||||
LUALIB_API int luaL_getsubtable (lua_State *L, int idx, const char *fname) {
|
||||
if (lua_getfield(L, idx, fname) == LUA_TTABLE)
|
||||
return 1; /* table already there */
|
||||
else {
|
||||
lua_pop(L, 1); /* remove previous result */
|
||||
idx = lua_absindex(L, idx);
|
||||
lua_newtable(L);
|
||||
lua_pushvalue(L, -1); /* copy to be left at top */
|
||||
lua_setfield(L, idx, fname); /* assign new table to field */
|
||||
return 0; /* false, because did not find table there */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Stripped-down 'require': After checking "loaded" table, calls 'openf'
|
||||
** to open a module, registers the result in 'package.loaded' table and,
|
||||
** if 'glb' is true, also registers the result in the global table.
|
||||
** Leaves resulting module on the top.
|
||||
*/
|
||||
LUALIB_API void luaL_requiref (lua_State *L, const char *modname,
|
||||
lua_CFunction openf, int glb) {
|
||||
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
|
||||
lua_getfield(L, -1, modname); /* _LOADED[modname] */
|
||||
if (!lua_toboolean(L, -1)) { /* package not already loaded? */
|
||||
lua_pop(L, 1); /* remove field */
|
||||
lua_pushcfunction(L, openf);
|
||||
lua_pushstring(L, modname); /* argument to open function */
|
||||
lua_call(L, 1, 1); /* call 'openf' to open module */
|
||||
lua_pushvalue(L, -1); /* make copy of module (call result) */
|
||||
lua_setfield(L, -3, modname); /* _LOADED[modname] = module */
|
||||
}
|
||||
lua_remove(L, -2); /* remove _LOADED table */
|
||||
if (glb) {
|
||||
lua_pushvalue(L, -1); /* copy of module */
|
||||
lua_setglobal(L, modname); /* _G[modname] = module */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API const char *luaL_gsub (lua_State *L, const char *s, const char *p,
|
||||
const char *r) {
|
||||
const char *wild;
|
||||
size_t l = strlen(p);
|
||||
luaL_Buffer b;
|
||||
luaL_buffinit(L, &b);
|
||||
while ((wild = strstr(s, p)) != NULL) {
|
||||
luaL_addlstring(&b, s, wild - s); /* push prefix */
|
||||
luaL_addstring(&b, r); /* push replacement in place of pattern */
|
||||
s = wild + l; /* continue after 'p' */
|
||||
}
|
||||
luaL_addstring(&b, s); /* push last suffix */
|
||||
luaL_pushresult(&b);
|
||||
return lua_tostring(L, -1);
|
||||
}
|
||||
|
||||
|
||||
static void *l_alloc (void *ud, void *ptr, size_t osize, size_t nsize) {
|
||||
(void)ud; (void)osize; /* not used */
|
||||
if (nsize == 0) {
|
||||
free(ptr);
|
||||
return NULL;
|
||||
}
|
||||
else
|
||||
return realloc(ptr, nsize);
|
||||
}
|
||||
|
||||
|
||||
static int panic (lua_State *L) {
|
||||
lua_writestringerror("PANIC: unprotected error in call to Lua API (%s)\n",
|
||||
lua_tostring(L, -1));
|
||||
return 0; /* return to Lua to abort */
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API lua_State *luaL_newstate (void) {
|
||||
lua_State *L = lua_newstate(l_alloc, NULL);
|
||||
if (L) lua_atpanic(L, &panic);
|
||||
return L;
|
||||
}
|
||||
|
||||
|
||||
LUALIB_API void luaL_checkversion_ (lua_State *L, lua_Number ver, size_t sz) {
|
||||
const lua_Number *v = lua_version(L);
|
||||
if (sz != LUAL_NUMSIZES) /* check numeric types */
|
||||
luaL_error(L, "core and library have incompatible numeric types");
|
||||
if (v != lua_version(NULL))
|
||||
luaL_error(L, "multiple Lua VMs detected");
|
||||
else if (*v != ver)
|
||||
luaL_error(L, "version mismatch: app. needs %f, Lua core provides %f",
|
||||
ver, *v);
|
||||
}
|
||||
|
||||
@ -0,0 +1,520 @@
|
||||
/*
|
||||
** $Id: lbaselib.c,v 1.309 2014/12/10 12:26:42 roberto Exp $
|
||||
** Basic library
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lbaselib_c
|
||||
#define LUA_LIB
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <ctype.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lauxlib.h"
|
||||
#include "lualib.h"
|
||||
|
||||
|
||||
static int luaB_print (lua_State *L) {
|
||||
int n = lua_gettop(L); /* number of arguments */
|
||||
int i;
|
||||
lua_getglobal(L, "tostring");
|
||||
for (i=1; i<=n; i++) {
|
||||
const char *s;
|
||||
size_t l;
|
||||
lua_pushvalue(L, -1); /* function to be called */
|
||||
lua_pushvalue(L, i); /* value to print */
|
||||
lua_call(L, 1, 1);
|
||||
s = lua_tolstring(L, -1, &l); /* get result */
|
||||
if (s == NULL)
|
||||
return luaL_error(L, "'tostring' must return a string to 'print'");
|
||||
if (i>1) lua_writestring("\t", 1);
|
||||
lua_writestring(s, l);
|
||||
lua_pop(L, 1); /* pop result */
|
||||
}
|
||||
lua_writeline();
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
#define SPACECHARS " \f\n\r\t\v"
|
||||
|
||||
static const char *b_str2int (const char *s, int base, lua_Integer *pn) {
|
||||
lua_Unsigned n = 0;
|
||||
int neg = 0;
|
||||
s += strspn(s, SPACECHARS); /* skip initial spaces */
|
||||
if (*s == '-') { s++; neg = 1; } /* handle signal */
|
||||
else if (*s == '+') s++;
|
||||
if (!isalnum((unsigned char)*s)) /* no digit? */
|
||||
return NULL;
|
||||
do {
|
||||
int digit = (isdigit((unsigned char)*s)) ? *s - '0'
|
||||
: toupper((unsigned char)*s) - 'A' + 10;
|
||||
if (digit >= base) return NULL; /* invalid numeral */
|
||||
n = n * base + digit;
|
||||
s++;
|
||||
} while (isalnum((unsigned char)*s));
|
||||
s += strspn(s, SPACECHARS); /* skip trailing spaces */
|
||||
*pn = (lua_Integer)((neg) ? (0u - n) : n);
|
||||
return s;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_tonumber (lua_State *L) {
|
||||
if (lua_isnoneornil(L, 2)) { /* standard conversion? */
|
||||
luaL_checkany(L, 1);
|
||||
if (lua_type(L, 1) == LUA_TNUMBER) { /* already a number? */
|
||||
lua_settop(L, 1); /* yes; return it */
|
||||
return 1;
|
||||
}
|
||||
else {
|
||||
size_t l;
|
||||
const char *s = lua_tolstring(L, 1, &l);
|
||||
if (s != NULL && lua_stringtonumber(L, s) == l + 1)
|
||||
return 1; /* successful conversion to number */
|
||||
/* else not a number */
|
||||
}
|
||||
}
|
||||
else {
|
||||
size_t l;
|
||||
const char *s;
|
||||
lua_Integer n = 0; /* to avoid warnings */
|
||||
lua_Integer base = luaL_checkinteger(L, 2);
|
||||
luaL_checktype(L, 1, LUA_TSTRING); /* before 'luaL_checklstring'! */
|
||||
s = luaL_checklstring(L, 1, &l);
|
||||
luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range");
|
||||
if (b_str2int(s, (int)base, &n) == s + l) {
|
||||
lua_pushinteger(L, n);
|
||||
return 1;
|
||||
} /* else not a number */
|
||||
} /* else not a number */
|
||||
lua_pushnil(L); /* not a number */
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_error (lua_State *L) {
|
||||
int level = (int)luaL_optinteger(L, 2, 1);
|
||||
lua_settop(L, 1);
|
||||
if (lua_isstring(L, 1) && level > 0) { /* add extra information? */
|
||||
luaL_where(L, level);
|
||||
lua_pushvalue(L, 1);
|
||||
lua_concat(L, 2);
|
||||
}
|
||||
return lua_error(L);
|
||||
}
|
||||
|
||||
|
||||
static int luaB_getmetatable (lua_State *L) {
|
||||
luaL_checkany(L, 1);
|
||||
if (!lua_getmetatable(L, 1)) {
|
||||
lua_pushnil(L);
|
||||
return 1; /* no metatable */
|
||||
}
|
||||
luaL_getmetafield(L, 1, "__metatable");
|
||||
return 1; /* returns either __metatable field (if present) or metatable */
|
||||
}
|
||||
|
||||
|
||||
static int luaB_setmetatable (lua_State *L) {
|
||||
int t = lua_type(L, 2);
|
||||
luaL_checktype(L, 1, LUA_TTABLE);
|
||||
luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
|
||||
"nil or table expected");
|
||||
if (luaL_getmetafield(L, 1, "__metatable") != LUA_TNIL)
|
||||
return luaL_error(L, "cannot change a protected metatable");
|
||||
lua_settop(L, 2);
|
||||
lua_setmetatable(L, 1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_rawequal (lua_State *L) {
|
||||
luaL_checkany(L, 1);
|
||||
luaL_checkany(L, 2);
|
||||
lua_pushboolean(L, lua_rawequal(L, 1, 2));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_rawlen (lua_State *L) {
|
||||
int t = lua_type(L, 1);
|
||||
luaL_argcheck(L, t == LUA_TTABLE || t == LUA_TSTRING, 1,
|
||||
"table or string expected");
|
||||
lua_pushinteger(L, lua_rawlen(L, 1));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_rawget (lua_State *L) {
|
||||
luaL_checktype(L, 1, LUA_TTABLE);
|
||||
luaL_checkany(L, 2);
|
||||
lua_settop(L, 2);
|
||||
lua_rawget(L, 1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int luaB_rawset (lua_State *L) {
|
||||
luaL_checktype(L, 1, LUA_TTABLE);
|
||||
luaL_checkany(L, 2);
|
||||
luaL_checkany(L, 3);
|
||||
lua_settop(L, 3);
|
||||
lua_rawset(L, 1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_collectgarbage (lua_State *L) {
|
||||
static const char *const opts[] = {"stop", "restart", "collect",
|
||||
"count", "step", "setpause", "setstepmul",
|
||||
"isrunning", NULL};
|
||||
static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT,
|
||||
LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL,
|
||||
LUA_GCISRUNNING};
|
||||
int o = optsnum[luaL_checkoption(L, 1, "collect", opts)];
|
||||
int ex = (int)luaL_optinteger(L, 2, 0);
|
||||
int res = lua_gc(L, o, ex);
|
||||
switch (o) {
|
||||
case LUA_GCCOUNT: {
|
||||
int b = lua_gc(L, LUA_GCCOUNTB, 0);
|
||||
lua_pushnumber(L, (lua_Number)res + ((lua_Number)b/1024));
|
||||
return 1;
|
||||
}
|
||||
case LUA_GCSTEP: case LUA_GCISRUNNING: {
|
||||
lua_pushboolean(L, res);
|
||||
return 1;
|
||||
}
|
||||
default: {
|
||||
lua_pushinteger(L, res);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** This function has all type names as upvalues, to maximize performance.
|
||||
*/
|
||||
static int luaB_type (lua_State *L) {
|
||||
luaL_checkany(L, 1);
|
||||
lua_pushvalue(L, lua_upvalueindex(lua_type(L, 1) + 1));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int pairsmeta (lua_State *L, const char *method, int iszero,
|
||||
lua_CFunction iter) {
|
||||
if (luaL_getmetafield(L, 1, method) == LUA_TNIL) { /* no metamethod? */
|
||||
luaL_checktype(L, 1, LUA_TTABLE); /* argument must be a table */
|
||||
lua_pushcfunction(L, iter); /* will return generator, */
|
||||
lua_pushvalue(L, 1); /* state, */
|
||||
if (iszero) lua_pushinteger(L, 0); /* and initial value */
|
||||
else lua_pushnil(L);
|
||||
}
|
||||
else {
|
||||
lua_pushvalue(L, 1); /* argument 'self' to metamethod */
|
||||
lua_call(L, 1, 3); /* get 3 values from metamethod */
|
||||
}
|
||||
return 3;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_next (lua_State *L) {
|
||||
luaL_checktype(L, 1, LUA_TTABLE);
|
||||
lua_settop(L, 2); /* create a 2nd argument if there isn't one */
|
||||
if (lua_next(L, 1))
|
||||
return 2;
|
||||
else {
|
||||
lua_pushnil(L);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int luaB_pairs (lua_State *L) {
|
||||
return pairsmeta(L, "__pairs", 0, luaB_next);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Traversal function for 'ipairs' for raw tables
|
||||
*/
|
||||
static int ipairsaux_raw (lua_State *L) {
|
||||
lua_Integer i = luaL_checkinteger(L, 2) + 1;
|
||||
luaL_checktype(L, 1, LUA_TTABLE);
|
||||
lua_pushinteger(L, i);
|
||||
return (lua_rawgeti(L, 1, i) == LUA_TNIL) ? 1 : 2;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Traversal function for 'ipairs' for tables with metamethods
|
||||
*/
|
||||
static int ipairsaux (lua_State *L) {
|
||||
lua_Integer i = luaL_checkinteger(L, 2) + 1;
|
||||
lua_pushinteger(L, i);
|
||||
return (lua_geti(L, 1, i) == LUA_TNIL) ? 1 : 2;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** This function will use either 'ipairsaux' or 'ipairsaux_raw' to
|
||||
** traverse a table, depending on whether the table has metamethods
|
||||
** that can affect the traversal.
|
||||
*/
|
||||
static int luaB_ipairs (lua_State *L) {
|
||||
lua_CFunction iter = (luaL_getmetafield(L, 1, "__index") != LUA_TNIL)
|
||||
? ipairsaux : ipairsaux_raw;
|
||||
#if defined(LUA_COMPAT_IPAIRS)
|
||||
return pairsmeta(L, "__ipairs", 1, iter);
|
||||
#else
|
||||
luaL_checkany(L, 1);
|
||||
lua_pushcfunction(L, iter); /* iteration function */
|
||||
lua_pushvalue(L, 1); /* state */
|
||||
lua_pushinteger(L, 0); /* initial value */
|
||||
return 3;
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
static int load_aux (lua_State *L, int status, int envidx) {
|
||||
if (status == LUA_OK) {
|
||||
if (envidx != 0) { /* 'env' parameter? */
|
||||
lua_pushvalue(L, envidx); /* environment for loaded function */
|
||||
if (!lua_setupvalue(L, -2, 1)) /* set it as 1st upvalue */
|
||||
lua_pop(L, 1); /* remove 'env' if not used by previous call */
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
else { /* error (message is on top of the stack) */
|
||||
lua_pushnil(L);
|
||||
lua_insert(L, -2); /* put before error message */
|
||||
return 2; /* return nil plus error message */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int luaB_loadfile (lua_State *L) {
|
||||
const char *fname = luaL_optstring(L, 1, NULL);
|
||||
const char *mode = luaL_optstring(L, 2, NULL);
|
||||
int env = (!lua_isnone(L, 3) ? 3 : 0); /* 'env' index or 0 if no 'env' */
|
||||
int status = luaL_loadfilex(L, fname, mode);
|
||||
return load_aux(L, status, env);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Generic Read function
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
** reserved slot, above all arguments, to hold a copy of the returned
|
||||
** string to avoid it being collected while parsed. 'load' has four
|
||||
** optional arguments (chunk, source name, mode, and environment).
|
||||
*/
|
||||
#define RESERVEDSLOT 5
|
||||
|
||||
|
||||
/*
|
||||
** Reader for generic 'load' function: 'lua_load' uses the
|
||||
** stack for internal stuff, so the reader cannot change the
|
||||
** stack top. Instead, it keeps its resulting string in a
|
||||
** reserved slot inside the stack.
|
||||
*/
|
||||
static const char *generic_reader (lua_State *L, void *ud, size_t *size) {
|
||||
(void)(ud); /* not used */
|
||||
luaL_checkstack(L, 2, "too many nested functions");
|
||||
lua_pushvalue(L, 1); /* get function */
|
||||
lua_call(L, 0, 1); /* call it */
|
||||
if (lua_isnil(L, -1)) {
|
||||
lua_pop(L, 1); /* pop result */
|
||||
*size = 0;
|
||||
return NULL;
|
||||
}
|
||||
else if (!lua_isstring(L, -1))
|
||||
luaL_error(L, "reader function must return a string");
|
||||
lua_replace(L, RESERVEDSLOT); /* save string in reserved slot */
|
||||
return lua_tolstring(L, RESERVEDSLOT, size);
|
||||
}
|
||||
|
||||
|
||||
static int luaB_load (lua_State *L) {
|
||||
int status;
|
||||
size_t l;
|
||||
const char *s = lua_tolstring(L, 1, &l);
|
||||
const char *mode = luaL_optstring(L, 3, "bt");
|
||||
int env = (!lua_isnone(L, 4) ? 4 : 0); /* 'env' index or 0 if no 'env' */
|
||||
if (s != NULL) { /* loading a string? */
|
||||
const char *chunkname = luaL_optstring(L, 2, s);
|
||||
status = luaL_loadbufferx(L, s, l, chunkname, mode);
|
||||
}
|
||||
else { /* loading from a reader function */
|
||||
const char *chunkname = luaL_optstring(L, 2, "=(load)");
|
||||
luaL_checktype(L, 1, LUA_TFUNCTION);
|
||||
lua_settop(L, RESERVEDSLOT); /* create reserved slot */
|
||||
status = lua_load(L, generic_reader, NULL, chunkname, mode);
|
||||
}
|
||||
return load_aux(L, status, env);
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
static int dofilecont (lua_State *L, int d1, lua_KContext d2) {
|
||||
(void)d1; (void)d2; /* only to match 'lua_Kfunction' prototype */
|
||||
return lua_gettop(L) - 1;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_dofile (lua_State *L) {
|
||||
const char *fname = luaL_optstring(L, 1, NULL);
|
||||
lua_settop(L, 1);
|
||||
if (luaL_loadfile(L, fname) != LUA_OK)
|
||||
return lua_error(L);
|
||||
lua_callk(L, 0, LUA_MULTRET, 0, dofilecont);
|
||||
return dofilecont(L, 0, 0);
|
||||
}
|
||||
|
||||
|
||||
static int luaB_assert (lua_State *L) {
|
||||
if (lua_toboolean(L, 1)) /* condition is true? */
|
||||
return lua_gettop(L); /* return all arguments */
|
||||
else { /* error */
|
||||
luaL_checkany(L, 1); /* there must be a condition */
|
||||
lua_remove(L, 1); /* remove it */
|
||||
lua_pushliteral(L, "assertion failed!"); /* default message */
|
||||
lua_settop(L, 1); /* leave only message (default if no other one) */
|
||||
return luaB_error(L); /* call 'error' */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int luaB_select (lua_State *L) {
|
||||
int n = lua_gettop(L);
|
||||
if (lua_type(L, 1) == LUA_TSTRING && *lua_tostring(L, 1) == '#') {
|
||||
lua_pushinteger(L, n-1);
|
||||
return 1;
|
||||
}
|
||||
else {
|
||||
lua_Integer i = luaL_checkinteger(L, 1);
|
||||
if (i < 0) i = n + i;
|
||||
else if (i > n) i = n;
|
||||
luaL_argcheck(L, 1 <= i, 1, "index out of range");
|
||||
return n - (int)i;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Continuation function for 'pcall' and 'xpcall'. Both functions
|
||||
** already pushed a 'true' before doing the call, so in case of success
|
||||
** 'finishpcall' only has to return everything in the stack minus
|
||||
** 'extra' values (where 'extra' is exactly the number of items to be
|
||||
** ignored).
|
||||
*/
|
||||
static int finishpcall (lua_State *L, int status, lua_KContext extra) {
|
||||
if (status != LUA_OK && status != LUA_YIELD) { /* error? */
|
||||
lua_pushboolean(L, 0); /* first result (false) */
|
||||
lua_pushvalue(L, -2); /* error message */
|
||||
return 2; /* return false, msg */
|
||||
}
|
||||
else
|
||||
return lua_gettop(L) - (int)extra; /* return all results */
|
||||
}
|
||||
|
||||
|
||||
static int luaB_pcall (lua_State *L) {
|
||||
int status;
|
||||
luaL_checkany(L, 1);
|
||||
lua_pushboolean(L, 1); /* first result if no errors */
|
||||
lua_insert(L, 1); /* put it in place */
|
||||
status = lua_pcallk(L, lua_gettop(L) - 2, LUA_MULTRET, 0, 0, finishpcall);
|
||||
return finishpcall(L, status, 0);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Do a protected call with error handling. After 'lua_rotate', the
|
||||
** stack will have <f, err, true, f, [args...]>; so, the function passes
|
||||
** 2 to 'finishpcall' to skip the 2 first values when returning results.
|
||||
*/
|
||||
static int luaB_xpcall (lua_State *L) {
|
||||
int status;
|
||||
int n = lua_gettop(L);
|
||||
luaL_checktype(L, 2, LUA_TFUNCTION); /* check error function */
|
||||
lua_pushboolean(L, 1); /* first result */
|
||||
lua_pushvalue(L, 1); /* function */
|
||||
lua_rotate(L, 3, 2); /* move them below function's arguments */
|
||||
status = lua_pcallk(L, n - 2, LUA_MULTRET, 2, 2, finishpcall);
|
||||
return finishpcall(L, status, 2);
|
||||
}
|
||||
|
||||
|
||||
static int luaB_tostring (lua_State *L) {
|
||||
luaL_checkany(L, 1);
|
||||
luaL_tolstring(L, 1, NULL);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static const luaL_Reg base_funcs[] = {
|
||||
{"assert", luaB_assert},
|
||||
{"collectgarbage", luaB_collectgarbage},
|
||||
{"dofile", luaB_dofile},
|
||||
{"error", luaB_error},
|
||||
{"getmetatable", luaB_getmetatable},
|
||||
{"ipairs", luaB_ipairs},
|
||||
{"loadfile", luaB_loadfile},
|
||||
{"load", luaB_load},
|
||||
#if defined(LUA_COMPAT_LOADSTRING)
|
||||
{"loadstring", luaB_load},
|
||||
#endif
|
||||
{"next", luaB_next},
|
||||
{"pairs", luaB_pairs},
|
||||
{"pcall", luaB_pcall},
|
||||
{"print", luaB_print},
|
||||
{"rawequal", luaB_rawequal},
|
||||
{"rawlen", luaB_rawlen},
|
||||
{"rawget", luaB_rawget},
|
||||
{"rawset", luaB_rawset},
|
||||
{"select", luaB_select},
|
||||
{"setmetatable", luaB_setmetatable},
|
||||
{"tonumber", luaB_tonumber},
|
||||
{"tostring", luaB_tostring},
|
||||
{"xpcall", luaB_xpcall},
|
||||
/* placeholders */
|
||||
{"type", NULL},
|
||||
{"_G", NULL},
|
||||
{"_VERSION", NULL},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
LUAMOD_API int luaopen_base (lua_State *L) {
|
||||
int i;
|
||||
/* open lib into global table */
|
||||
lua_pushglobaltable(L);
|
||||
luaL_setfuncs(L, base_funcs, 0);
|
||||
/* set global _G */
|
||||
lua_pushvalue(L, -1);
|
||||
lua_setfield(L, -2, "_G");
|
||||
/* set global _VERSION */
|
||||
lua_pushliteral(L, LUA_VERSION);
|
||||
lua_setfield(L, -2, "_VERSION");
|
||||
/* set function 'type' with proper upvalues */
|
||||
for (i = 0; i < LUA_NUMTAGS; i++) /* push all type names as upvalues */
|
||||
lua_pushstring(L, lua_typename(L, i));
|
||||
lua_pushcclosure(L, luaB_type, LUA_NUMTAGS);
|
||||
lua_setfield(L, -2, "type");
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -0,0 +1,230 @@
|
||||
/*
|
||||
** $Id: lbitlib.c,v 1.28 2014/11/02 19:19:04 roberto Exp $
|
||||
** Standard library for bitwise operations
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lbitlib_c
|
||||
#define LUA_LIB
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lauxlib.h"
|
||||
#include "lualib.h"
|
||||
|
||||
|
||||
#if defined(LUA_COMPAT_BITLIB) /* { */
|
||||
|
||||
|
||||
/* number of bits to consider in a number */
|
||||
#if !defined(LUA_NBITS)
|
||||
#define LUA_NBITS 32
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** a lua_Unsigned with its first LUA_NBITS bits equal to 1. (Shift must
|
||||
** be made in two parts to avoid problems when LUA_NBITS is equal to the
|
||||
** number of bits in a lua_Unsigned.)
|
||||
*/
|
||||
#define ALLONES (~(((~(lua_Unsigned)0) << (LUA_NBITS - 1)) << 1))
|
||||
|
||||
|
||||
/* macro to trim extra bits */
|
||||
#define trim(x) ((x) & ALLONES)
|
||||
|
||||
|
||||
/* builds a number with 'n' ones (1 <= n <= LUA_NBITS) */
|
||||
#define mask(n) (~((ALLONES << 1) << ((n) - 1)))
|
||||
|
||||
|
||||
|
||||
static lua_Unsigned andaux (lua_State *L) {
|
||||
int i, n = lua_gettop(L);
|
||||
lua_Unsigned r = ~(lua_Unsigned)0;
|
||||
for (i = 1; i <= n; i++)
|
||||
r &= luaL_checkunsigned(L, i);
|
||||
return trim(r);
|
||||
}
|
||||
|
||||
|
||||
static int b_and (lua_State *L) {
|
||||
lua_Unsigned r = andaux(L);
|
||||
lua_pushunsigned(L, r);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int b_test (lua_State *L) {
|
||||
lua_Unsigned r = andaux(L);
|
||||
lua_pushboolean(L, r != 0);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int b_or (lua_State *L) {
|
||||
int i, n = lua_gettop(L);
|
||||
lua_Unsigned r = 0;
|
||||
for (i = 1; i <= n; i++)
|
||||
r |= luaL_checkunsigned(L, i);
|
||||
lua_pushunsigned(L, trim(r));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int b_xor (lua_State *L) {
|
||||
int i, n = lua_gettop(L);
|
||||
lua_Unsigned r = 0;
|
||||
for (i = 1; i <= n; i++)
|
||||
r ^= luaL_checkunsigned(L, i);
|
||||
lua_pushunsigned(L, trim(r));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int b_not (lua_State *L) {
|
||||
lua_Unsigned r = ~luaL_checkunsigned(L, 1);
|
||||
lua_pushunsigned(L, trim(r));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int b_shift (lua_State *L, lua_Unsigned r, lua_Integer i) {
|
||||
if (i < 0) { /* shift right? */
|
||||
i = -i;
|
||||
r = trim(r);
|
||||
if (i >= LUA_NBITS) r = 0;
|
||||
else r >>= i;
|
||||
}
|
||||
else { /* shift left */
|
||||
if (i >= LUA_NBITS) r = 0;
|
||||
else r <<= i;
|
||||
r = trim(r);
|
||||
}
|
||||
lua_pushunsigned(L, r);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int b_lshift (lua_State *L) {
|
||||
return b_shift(L, luaL_checkunsigned(L, 1), luaL_checkinteger(L, 2));
|
||||
}
|
||||
|
||||
|
||||
static int b_rshift (lua_State *L) {
|
||||
return b_shift(L, luaL_checkunsigned(L, 1), -luaL_checkinteger(L, 2));
|
||||
}
|
||||
|
||||
|
||||
static int b_arshift (lua_State *L) {
|
||||
lua_Unsigned r = luaL_checkunsigned(L, 1);
|
||||
lua_Integer i = luaL_checkinteger(L, 2);
|
||||
if (i < 0 || !(r & ((lua_Unsigned)1 << (LUA_NBITS - 1))))
|
||||
return b_shift(L, r, -i);
|
||||
else { /* arithmetic shift for 'negative' number */
|
||||
if (i >= LUA_NBITS) r = ALLONES;
|
||||
else
|
||||
r = trim((r >> i) | ~(trim(~(lua_Unsigned)0) >> i)); /* add signal bit */
|
||||
lua_pushunsigned(L, r);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int b_rot (lua_State *L, lua_Integer d) {
|
||||
lua_Unsigned r = luaL_checkunsigned(L, 1);
|
||||
int i = d & (LUA_NBITS - 1); /* i = d % NBITS */
|
||||
r = trim(r);
|
||||
if (i != 0) /* avoid undefined shift of LUA_NBITS when i == 0 */
|
||||
r = (r << i) | (r >> (LUA_NBITS - i));
|
||||
lua_pushunsigned(L, trim(r));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int b_lrot (lua_State *L) {
|
||||
return b_rot(L, luaL_checkinteger(L, 2));
|
||||
}
|
||||
|
||||
|
||||
static int b_rrot (lua_State *L) {
|
||||
return b_rot(L, -luaL_checkinteger(L, 2));
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** get field and width arguments for field-manipulation functions,
|
||||
** checking whether they are valid.
|
||||
** ('luaL_error' called without 'return' to avoid later warnings about
|
||||
** 'width' being used uninitialized.)
|
||||
*/
|
||||
static int fieldargs (lua_State *L, int farg, int *width) {
|
||||
lua_Integer f = luaL_checkinteger(L, farg);
|
||||
lua_Integer w = luaL_optinteger(L, farg + 1, 1);
|
||||
luaL_argcheck(L, 0 <= f, farg, "field cannot be negative");
|
||||
luaL_argcheck(L, 0 < w, farg + 1, "width must be positive");
|
||||
if (f + w > LUA_NBITS)
|
||||
luaL_error(L, "trying to access non-existent bits");
|
||||
*width = (int)w;
|
||||
return (int)f;
|
||||
}
|
||||
|
||||
|
||||
static int b_extract (lua_State *L) {
|
||||
int w;
|
||||
lua_Unsigned r = trim(luaL_checkunsigned(L, 1));
|
||||
int f = fieldargs(L, 2, &w);
|
||||
r = (r >> f) & mask(w);
|
||||
lua_pushunsigned(L, r);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int b_replace (lua_State *L) {
|
||||
int w;
|
||||
lua_Unsigned r = trim(luaL_checkunsigned(L, 1));
|
||||
lua_Unsigned v = luaL_checkunsigned(L, 2);
|
||||
int f = fieldargs(L, 3, &w);
|
||||
int m = mask(w);
|
||||
v &= m; /* erase bits outside given width */
|
||||
r = (r & ~(m << f)) | (v << f);
|
||||
lua_pushunsigned(L, r);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static const luaL_Reg bitlib[] = {
|
||||
{"arshift", b_arshift},
|
||||
{"band", b_and},
|
||||
{"bnot", b_not},
|
||||
{"bor", b_or},
|
||||
{"bxor", b_xor},
|
||||
{"btest", b_test},
|
||||
{"extract", b_extract},
|
||||
{"lrotate", b_lrot},
|
||||
{"lshift", b_lshift},
|
||||
{"replace", b_replace},
|
||||
{"rrotate", b_rrot},
|
||||
{"rshift", b_rshift},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
|
||||
LUAMOD_API int luaopen_bit32 (lua_State *L) {
|
||||
luaL_newlib(L, bitlib);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
|
||||
LUAMOD_API int luaopen_bit32 (lua_State *L) {
|
||||
return luaL_error(L, "library 'bit32' has been deprecated");
|
||||
}
|
||||
|
||||
#endif /* } */
|
||||
@ -0,0 +1,968 @@
|
||||
/*
|
||||
** $Id: lcode.c,v 2.98 2014/12/19 13:36:32 roberto Exp $
|
||||
** Code generator for Lua
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lcode_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <math.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lcode.h"
|
||||
#include "ldebug.h"
|
||||
#include "ldo.h"
|
||||
#include "lgc.h"
|
||||
#include "llex.h"
|
||||
#include "lmem.h"
|
||||
#include "lobject.h"
|
||||
#include "lopcodes.h"
|
||||
#include "lparser.h"
|
||||
#include "lstring.h"
|
||||
#include "ltable.h"
|
||||
#include "lvm.h"
|
||||
|
||||
|
||||
/* Maximum number of registers in a Lua function */
|
||||
#define MAXREGS 250
|
||||
|
||||
|
||||
/* test for x == -0 ('signbit' needs 'math.h') */
|
||||
#if defined(signbit)
|
||||
#define isminuszero(x) ((x) == 0.0 && signbit(x))
|
||||
#else
|
||||
#define isminuszero(x) ((x) == 0.0 && 1.0/(x) < 0.0)
|
||||
#endif
|
||||
|
||||
|
||||
#define hasjumps(e) ((e)->t != (e)->f)
|
||||
|
||||
|
||||
static int tonumeral(expdesc *e, TValue *v) {
|
||||
if (e->t != NO_JUMP || e->f != NO_JUMP)
|
||||
return 0; /* not a numeral */
|
||||
switch (e->k) {
|
||||
case VKINT:
|
||||
if (v) setivalue(v, e->u.ival);
|
||||
return 1;
|
||||
case VKFLT:
|
||||
if (v) setfltvalue(v, e->u.nval);
|
||||
return 1;
|
||||
default: return 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaK_nil (FuncState *fs, int from, int n) {
|
||||
Instruction *previous;
|
||||
int l = from + n - 1; /* last register to set nil */
|
||||
if (fs->pc > fs->lasttarget) { /* no jumps to current position? */
|
||||
previous = &fs->f->code[fs->pc-1];
|
||||
if (GET_OPCODE(*previous) == OP_LOADNIL) {
|
||||
int pfrom = GETARG_A(*previous);
|
||||
int pl = pfrom + GETARG_B(*previous);
|
||||
if ((pfrom <= from && from <= pl + 1) ||
|
||||
(from <= pfrom && pfrom <= l + 1)) { /* can connect both? */
|
||||
if (pfrom < from) from = pfrom; /* from = min(from, pfrom) */
|
||||
if (pl > l) l = pl; /* l = max(l, pl) */
|
||||
SETARG_A(*previous, from);
|
||||
SETARG_B(*previous, l - from);
|
||||
return;
|
||||
}
|
||||
} /* else go through */
|
||||
}
|
||||
luaK_codeABC(fs, OP_LOADNIL, from, n - 1, 0); /* else no optimization */
|
||||
}
|
||||
|
||||
|
||||
int luaK_jump (FuncState *fs) {
|
||||
int jpc = fs->jpc; /* save list of jumps to here */
|
||||
int j;
|
||||
fs->jpc = NO_JUMP;
|
||||
j = luaK_codeAsBx(fs, OP_JMP, 0, NO_JUMP);
|
||||
luaK_concat(fs, &j, jpc); /* keep them on hold */
|
||||
return j;
|
||||
}
|
||||
|
||||
|
||||
void luaK_ret (FuncState *fs, int first, int nret) {
|
||||
luaK_codeABC(fs, OP_RETURN, first, nret+1, 0);
|
||||
}
|
||||
|
||||
|
||||
static int condjump (FuncState *fs, OpCode op, int A, int B, int C) {
|
||||
luaK_codeABC(fs, op, A, B, C);
|
||||
return luaK_jump(fs);
|
||||
}
|
||||
|
||||
|
||||
static void fixjump (FuncState *fs, int pc, int dest) {
|
||||
Instruction *jmp = &fs->f->code[pc];
|
||||
int offset = dest-(pc+1);
|
||||
lua_assert(dest != NO_JUMP);
|
||||
if (abs(offset) > MAXARG_sBx)
|
||||
luaX_syntaxerror(fs->ls, "control structure too long");
|
||||
SETARG_sBx(*jmp, offset);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** returns current 'pc' and marks it as a jump target (to avoid wrong
|
||||
** optimizations with consecutive instructions not in the same basic block).
|
||||
*/
|
||||
int luaK_getlabel (FuncState *fs) {
|
||||
fs->lasttarget = fs->pc;
|
||||
return fs->pc;
|
||||
}
|
||||
|
||||
|
||||
static int getjump (FuncState *fs, int pc) {
|
||||
int offset = GETARG_sBx(fs->f->code[pc]);
|
||||
if (offset == NO_JUMP) /* point to itself represents end of list */
|
||||
return NO_JUMP; /* end of list */
|
||||
else
|
||||
return (pc+1)+offset; /* turn offset into absolute position */
|
||||
}
|
||||
|
||||
|
||||
static Instruction *getjumpcontrol (FuncState *fs, int pc) {
|
||||
Instruction *pi = &fs->f->code[pc];
|
||||
if (pc >= 1 && testTMode(GET_OPCODE(*(pi-1))))
|
||||
return pi-1;
|
||||
else
|
||||
return pi;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** check whether list has any jump that do not produce a value
|
||||
** (or produce an inverted value)
|
||||
*/
|
||||
static int need_value (FuncState *fs, int list) {
|
||||
for (; list != NO_JUMP; list = getjump(fs, list)) {
|
||||
Instruction i = *getjumpcontrol(fs, list);
|
||||
if (GET_OPCODE(i) != OP_TESTSET) return 1;
|
||||
}
|
||||
return 0; /* not found */
|
||||
}
|
||||
|
||||
|
||||
static int patchtestreg (FuncState *fs, int node, int reg) {
|
||||
Instruction *i = getjumpcontrol(fs, node);
|
||||
if (GET_OPCODE(*i) != OP_TESTSET)
|
||||
return 0; /* cannot patch other instructions */
|
||||
if (reg != NO_REG && reg != GETARG_B(*i))
|
||||
SETARG_A(*i, reg);
|
||||
else /* no register to put value or register already has the value */
|
||||
*i = CREATE_ABC(OP_TEST, GETARG_B(*i), 0, GETARG_C(*i));
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static void removevalues (FuncState *fs, int list) {
|
||||
for (; list != NO_JUMP; list = getjump(fs, list))
|
||||
patchtestreg(fs, list, NO_REG);
|
||||
}
|
||||
|
||||
|
||||
static void patchlistaux (FuncState *fs, int list, int vtarget, int reg,
|
||||
int dtarget) {
|
||||
while (list != NO_JUMP) {
|
||||
int next = getjump(fs, list);
|
||||
if (patchtestreg(fs, list, reg))
|
||||
fixjump(fs, list, vtarget);
|
||||
else
|
||||
fixjump(fs, list, dtarget); /* jump to default target */
|
||||
list = next;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void dischargejpc (FuncState *fs) {
|
||||
patchlistaux(fs, fs->jpc, fs->pc, NO_REG, fs->pc);
|
||||
fs->jpc = NO_JUMP;
|
||||
}
|
||||
|
||||
|
||||
void luaK_patchlist (FuncState *fs, int list, int target) {
|
||||
if (target == fs->pc)
|
||||
luaK_patchtohere(fs, list);
|
||||
else {
|
||||
lua_assert(target < fs->pc);
|
||||
patchlistaux(fs, list, target, NO_REG, target);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaK_patchclose (FuncState *fs, int list, int level) {
|
||||
level++; /* argument is +1 to reserve 0 as non-op */
|
||||
while (list != NO_JUMP) {
|
||||
int next = getjump(fs, list);
|
||||
lua_assert(GET_OPCODE(fs->f->code[list]) == OP_JMP &&
|
||||
(GETARG_A(fs->f->code[list]) == 0 ||
|
||||
GETARG_A(fs->f->code[list]) >= level));
|
||||
SETARG_A(fs->f->code[list], level);
|
||||
list = next;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaK_patchtohere (FuncState *fs, int list) {
|
||||
luaK_getlabel(fs);
|
||||
luaK_concat(fs, &fs->jpc, list);
|
||||
}
|
||||
|
||||
|
||||
void luaK_concat (FuncState *fs, int *l1, int l2) {
|
||||
if (l2 == NO_JUMP) return;
|
||||
else if (*l1 == NO_JUMP)
|
||||
*l1 = l2;
|
||||
else {
|
||||
int list = *l1;
|
||||
int next;
|
||||
while ((next = getjump(fs, list)) != NO_JUMP) /* find last element */
|
||||
list = next;
|
||||
fixjump(fs, list, l2);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int luaK_code (FuncState *fs, Instruction i) {
|
||||
Proto *f = fs->f;
|
||||
dischargejpc(fs); /* 'pc' will change */
|
||||
/* put new instruction in code array */
|
||||
luaM_growvector(fs->ls->L, f->code, fs->pc, f->sizecode, Instruction,
|
||||
MAX_INT, "opcodes");
|
||||
f->code[fs->pc] = i;
|
||||
/* save corresponding line information */
|
||||
luaM_growvector(fs->ls->L, f->lineinfo, fs->pc, f->sizelineinfo, int,
|
||||
MAX_INT, "opcodes");
|
||||
f->lineinfo[fs->pc] = fs->ls->lastline;
|
||||
return fs->pc++;
|
||||
}
|
||||
|
||||
|
||||
int luaK_codeABC (FuncState *fs, OpCode o, int a, int b, int c) {
|
||||
lua_assert(getOpMode(o) == iABC);
|
||||
lua_assert(getBMode(o) != OpArgN || b == 0);
|
||||
lua_assert(getCMode(o) != OpArgN || c == 0);
|
||||
lua_assert(a <= MAXARG_A && b <= MAXARG_B && c <= MAXARG_C);
|
||||
return luaK_code(fs, CREATE_ABC(o, a, b, c));
|
||||
}
|
||||
|
||||
|
||||
int luaK_codeABx (FuncState *fs, OpCode o, int a, unsigned int bc) {
|
||||
lua_assert(getOpMode(o) == iABx || getOpMode(o) == iAsBx);
|
||||
lua_assert(getCMode(o) == OpArgN);
|
||||
lua_assert(a <= MAXARG_A && bc <= MAXARG_Bx);
|
||||
return luaK_code(fs, CREATE_ABx(o, a, bc));
|
||||
}
|
||||
|
||||
|
||||
static int codeextraarg (FuncState *fs, int a) {
|
||||
lua_assert(a <= MAXARG_Ax);
|
||||
return luaK_code(fs, CREATE_Ax(OP_EXTRAARG, a));
|
||||
}
|
||||
|
||||
|
||||
int luaK_codek (FuncState *fs, int reg, int k) {
|
||||
if (k <= MAXARG_Bx)
|
||||
return luaK_codeABx(fs, OP_LOADK, reg, k);
|
||||
else {
|
||||
int p = luaK_codeABx(fs, OP_LOADKX, reg, 0);
|
||||
codeextraarg(fs, k);
|
||||
return p;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaK_checkstack (FuncState *fs, int n) {
|
||||
int newstack = fs->freereg + n;
|
||||
if (newstack > fs->f->maxstacksize) {
|
||||
if (newstack >= MAXREGS)
|
||||
luaX_syntaxerror(fs->ls, "function or expression too complex");
|
||||
fs->f->maxstacksize = cast_byte(newstack);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaK_reserveregs (FuncState *fs, int n) {
|
||||
luaK_checkstack(fs, n);
|
||||
fs->freereg += n;
|
||||
}
|
||||
|
||||
|
||||
static void freereg (FuncState *fs, int reg) {
|
||||
if (!ISK(reg) && reg >= fs->nactvar) {
|
||||
fs->freereg--;
|
||||
lua_assert(reg == fs->freereg);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void freeexp (FuncState *fs, expdesc *e) {
|
||||
if (e->k == VNONRELOC)
|
||||
freereg(fs, e->u.info);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Use scanner's table to cache position of constants in constant list
|
||||
** and try to reuse constants
|
||||
*/
|
||||
static int addk (FuncState *fs, TValue *key, TValue *v) {
|
||||
lua_State *L = fs->ls->L;
|
||||
Proto *f = fs->f;
|
||||
TValue *idx = luaH_set(L, fs->ls->h, key); /* index scanner table */
|
||||
int k, oldsize;
|
||||
if (ttisinteger(idx)) { /* is there an index there? */
|
||||
k = cast_int(ivalue(idx));
|
||||
/* correct value? (warning: must distinguish floats from integers!) */
|
||||
if (k < fs->nk && ttype(&f->k[k]) == ttype(v) &&
|
||||
luaV_rawequalobj(&f->k[k], v))
|
||||
return k; /* reuse index */
|
||||
}
|
||||
/* constant not found; create a new entry */
|
||||
oldsize = f->sizek;
|
||||
k = fs->nk;
|
||||
/* numerical value does not need GC barrier;
|
||||
table has no metatable, so it does not need to invalidate cache */
|
||||
setivalue(idx, k);
|
||||
luaM_growvector(L, f->k, k, f->sizek, TValue, MAXARG_Ax, "constants");
|
||||
while (oldsize < f->sizek) setnilvalue(&f->k[oldsize++]);
|
||||
setobj(L, &f->k[k], v);
|
||||
fs->nk++;
|
||||
luaC_barrier(L, f, v);
|
||||
return k;
|
||||
}
|
||||
|
||||
|
||||
int luaK_stringK (FuncState *fs, TString *s) {
|
||||
TValue o;
|
||||
setsvalue(fs->ls->L, &o, s);
|
||||
return addk(fs, &o, &o);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Integers use userdata as keys to avoid collision with floats with same
|
||||
** value; conversion to 'void*' used only for hashing, no "precision"
|
||||
** problems
|
||||
*/
|
||||
int luaK_intK (FuncState *fs, lua_Integer n) {
|
||||
TValue k, o;
|
||||
setpvalue(&k, cast(void*, cast(size_t, n)));
|
||||
setivalue(&o, n);
|
||||
return addk(fs, &k, &o);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Both NaN and -0.0 should not go to the constant table, as they have
|
||||
** problems with the hashing. (NaN is not a valid key, -0.0 collides
|
||||
** with +0.0.)
|
||||
*/
|
||||
static int luaK_numberK (FuncState *fs, lua_Number r) {
|
||||
TValue o;
|
||||
lua_assert(!luai_numisnan(r) && !isminuszero(r));
|
||||
setfltvalue(&o, r);
|
||||
return addk(fs, &o, &o);
|
||||
}
|
||||
|
||||
|
||||
static int boolK (FuncState *fs, int b) {
|
||||
TValue o;
|
||||
setbvalue(&o, b);
|
||||
return addk(fs, &o, &o);
|
||||
}
|
||||
|
||||
|
||||
static int nilK (FuncState *fs) {
|
||||
TValue k, v;
|
||||
setnilvalue(&v);
|
||||
/* cannot use nil as key; instead use table itself to represent nil */
|
||||
sethvalue(fs->ls->L, &k, fs->ls->h);
|
||||
return addk(fs, &k, &v);
|
||||
}
|
||||
|
||||
|
||||
void luaK_setreturns (FuncState *fs, expdesc *e, int nresults) {
|
||||
if (e->k == VCALL) { /* expression is an open function call? */
|
||||
SETARG_C(getcode(fs, e), nresults+1);
|
||||
}
|
||||
else if (e->k == VVARARG) {
|
||||
SETARG_B(getcode(fs, e), nresults+1);
|
||||
SETARG_A(getcode(fs, e), fs->freereg);
|
||||
luaK_reserveregs(fs, 1);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaK_setoneret (FuncState *fs, expdesc *e) {
|
||||
if (e->k == VCALL) { /* expression is an open function call? */
|
||||
e->k = VNONRELOC;
|
||||
e->u.info = GETARG_A(getcode(fs, e));
|
||||
}
|
||||
else if (e->k == VVARARG) {
|
||||
SETARG_B(getcode(fs, e), 2);
|
||||
e->k = VRELOCABLE; /* can relocate its simple result */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaK_dischargevars (FuncState *fs, expdesc *e) {
|
||||
switch (e->k) {
|
||||
case VLOCAL: {
|
||||
e->k = VNONRELOC;
|
||||
break;
|
||||
}
|
||||
case VUPVAL: {
|
||||
e->u.info = luaK_codeABC(fs, OP_GETUPVAL, 0, e->u.info, 0);
|
||||
e->k = VRELOCABLE;
|
||||
break;
|
||||
}
|
||||
case VINDEXED: {
|
||||
OpCode op = OP_GETTABUP; /* assume 't' is in an upvalue */
|
||||
freereg(fs, e->u.ind.idx);
|
||||
if (e->u.ind.vt == VLOCAL) { /* 't' is in a register? */
|
||||
freereg(fs, e->u.ind.t);
|
||||
op = OP_GETTABLE;
|
||||
}
|
||||
e->u.info = luaK_codeABC(fs, op, 0, e->u.ind.t, e->u.ind.idx);
|
||||
e->k = VRELOCABLE;
|
||||
break;
|
||||
}
|
||||
case VVARARG:
|
||||
case VCALL: {
|
||||
luaK_setoneret(fs, e);
|
||||
break;
|
||||
}
|
||||
default: break; /* there is one value available (somewhere) */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int code_label (FuncState *fs, int A, int b, int jump) {
|
||||
luaK_getlabel(fs); /* those instructions may be jump targets */
|
||||
return luaK_codeABC(fs, OP_LOADBOOL, A, b, jump);
|
||||
}
|
||||
|
||||
|
||||
static void discharge2reg (FuncState *fs, expdesc *e, int reg) {
|
||||
luaK_dischargevars(fs, e);
|
||||
switch (e->k) {
|
||||
case VNIL: {
|
||||
luaK_nil(fs, reg, 1);
|
||||
break;
|
||||
}
|
||||
case VFALSE: case VTRUE: {
|
||||
luaK_codeABC(fs, OP_LOADBOOL, reg, e->k == VTRUE, 0);
|
||||
break;
|
||||
}
|
||||
case VK: {
|
||||
luaK_codek(fs, reg, e->u.info);
|
||||
break;
|
||||
}
|
||||
case VKFLT: {
|
||||
luaK_codek(fs, reg, luaK_numberK(fs, e->u.nval));
|
||||
break;
|
||||
}
|
||||
case VKINT: {
|
||||
luaK_codek(fs, reg, luaK_intK(fs, e->u.ival));
|
||||
break;
|
||||
}
|
||||
case VRELOCABLE: {
|
||||
Instruction *pc = &getcode(fs, e);
|
||||
SETARG_A(*pc, reg);
|
||||
break;
|
||||
}
|
||||
case VNONRELOC: {
|
||||
if (reg != e->u.info)
|
||||
luaK_codeABC(fs, OP_MOVE, reg, e->u.info, 0);
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
lua_assert(e->k == VVOID || e->k == VJMP);
|
||||
return; /* nothing to do... */
|
||||
}
|
||||
}
|
||||
e->u.info = reg;
|
||||
e->k = VNONRELOC;
|
||||
}
|
||||
|
||||
|
||||
static void discharge2anyreg (FuncState *fs, expdesc *e) {
|
||||
if (e->k != VNONRELOC) {
|
||||
luaK_reserveregs(fs, 1);
|
||||
discharge2reg(fs, e, fs->freereg-1);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void exp2reg (FuncState *fs, expdesc *e, int reg) {
|
||||
discharge2reg(fs, e, reg);
|
||||
if (e->k == VJMP)
|
||||
luaK_concat(fs, &e->t, e->u.info); /* put this jump in 't' list */
|
||||
if (hasjumps(e)) {
|
||||
int final; /* position after whole expression */
|
||||
int p_f = NO_JUMP; /* position of an eventual LOAD false */
|
||||
int p_t = NO_JUMP; /* position of an eventual LOAD true */
|
||||
if (need_value(fs, e->t) || need_value(fs, e->f)) {
|
||||
int fj = (e->k == VJMP) ? NO_JUMP : luaK_jump(fs);
|
||||
p_f = code_label(fs, reg, 0, 1);
|
||||
p_t = code_label(fs, reg, 1, 0);
|
||||
luaK_patchtohere(fs, fj);
|
||||
}
|
||||
final = luaK_getlabel(fs);
|
||||
patchlistaux(fs, e->f, final, reg, p_f);
|
||||
patchlistaux(fs, e->t, final, reg, p_t);
|
||||
}
|
||||
e->f = e->t = NO_JUMP;
|
||||
e->u.info = reg;
|
||||
e->k = VNONRELOC;
|
||||
}
|
||||
|
||||
|
||||
void luaK_exp2nextreg (FuncState *fs, expdesc *e) {
|
||||
luaK_dischargevars(fs, e);
|
||||
freeexp(fs, e);
|
||||
luaK_reserveregs(fs, 1);
|
||||
exp2reg(fs, e, fs->freereg - 1);
|
||||
}
|
||||
|
||||
|
||||
int luaK_exp2anyreg (FuncState *fs, expdesc *e) {
|
||||
luaK_dischargevars(fs, e);
|
||||
if (e->k == VNONRELOC) {
|
||||
if (!hasjumps(e)) return e->u.info; /* exp is already in a register */
|
||||
if (e->u.info >= fs->nactvar) { /* reg. is not a local? */
|
||||
exp2reg(fs, e, e->u.info); /* put value on it */
|
||||
return e->u.info;
|
||||
}
|
||||
}
|
||||
luaK_exp2nextreg(fs, e); /* default */
|
||||
return e->u.info;
|
||||
}
|
||||
|
||||
|
||||
void luaK_exp2anyregup (FuncState *fs, expdesc *e) {
|
||||
if (e->k != VUPVAL || hasjumps(e))
|
||||
luaK_exp2anyreg(fs, e);
|
||||
}
|
||||
|
||||
|
||||
void luaK_exp2val (FuncState *fs, expdesc *e) {
|
||||
if (hasjumps(e))
|
||||
luaK_exp2anyreg(fs, e);
|
||||
else
|
||||
luaK_dischargevars(fs, e);
|
||||
}
|
||||
|
||||
|
||||
int luaK_exp2RK (FuncState *fs, expdesc *e) {
|
||||
luaK_exp2val(fs, e);
|
||||
switch (e->k) {
|
||||
case VTRUE:
|
||||
case VFALSE:
|
||||
case VNIL: {
|
||||
if (fs->nk <= MAXINDEXRK) { /* constant fits in RK operand? */
|
||||
e->u.info = (e->k == VNIL) ? nilK(fs) : boolK(fs, (e->k == VTRUE));
|
||||
e->k = VK;
|
||||
return RKASK(e->u.info);
|
||||
}
|
||||
else break;
|
||||
}
|
||||
case VKINT: {
|
||||
e->u.info = luaK_intK(fs, e->u.ival);
|
||||
e->k = VK;
|
||||
goto vk;
|
||||
}
|
||||
case VKFLT: {
|
||||
e->u.info = luaK_numberK(fs, e->u.nval);
|
||||
e->k = VK;
|
||||
/* go through */
|
||||
}
|
||||
case VK: {
|
||||
vk:
|
||||
if (e->u.info <= MAXINDEXRK) /* constant fits in 'argC'? */
|
||||
return RKASK(e->u.info);
|
||||
else break;
|
||||
}
|
||||
default: break;
|
||||
}
|
||||
/* not a constant in the right range: put it in a register */
|
||||
return luaK_exp2anyreg(fs, e);
|
||||
}
|
||||
|
||||
|
||||
void luaK_storevar (FuncState *fs, expdesc *var, expdesc *ex) {
|
||||
switch (var->k) {
|
||||
case VLOCAL: {
|
||||
freeexp(fs, ex);
|
||||
exp2reg(fs, ex, var->u.info);
|
||||
return;
|
||||
}
|
||||
case VUPVAL: {
|
||||
int e = luaK_exp2anyreg(fs, ex);
|
||||
luaK_codeABC(fs, OP_SETUPVAL, e, var->u.info, 0);
|
||||
break;
|
||||
}
|
||||
case VINDEXED: {
|
||||
OpCode op = (var->u.ind.vt == VLOCAL) ? OP_SETTABLE : OP_SETTABUP;
|
||||
int e = luaK_exp2RK(fs, ex);
|
||||
luaK_codeABC(fs, op, var->u.ind.t, var->u.ind.idx, e);
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
lua_assert(0); /* invalid var kind to store */
|
||||
break;
|
||||
}
|
||||
}
|
||||
freeexp(fs, ex);
|
||||
}
|
||||
|
||||
|
||||
void luaK_self (FuncState *fs, expdesc *e, expdesc *key) {
|
||||
int ereg;
|
||||
luaK_exp2anyreg(fs, e);
|
||||
ereg = e->u.info; /* register where 'e' was placed */
|
||||
freeexp(fs, e);
|
||||
e->u.info = fs->freereg; /* base register for op_self */
|
||||
e->k = VNONRELOC;
|
||||
luaK_reserveregs(fs, 2); /* function and 'self' produced by op_self */
|
||||
luaK_codeABC(fs, OP_SELF, e->u.info, ereg, luaK_exp2RK(fs, key));
|
||||
freeexp(fs, key);
|
||||
}
|
||||
|
||||
|
||||
static void invertjump (FuncState *fs, expdesc *e) {
|
||||
Instruction *pc = getjumpcontrol(fs, e->u.info);
|
||||
lua_assert(testTMode(GET_OPCODE(*pc)) && GET_OPCODE(*pc) != OP_TESTSET &&
|
||||
GET_OPCODE(*pc) != OP_TEST);
|
||||
SETARG_A(*pc, !(GETARG_A(*pc)));
|
||||
}
|
||||
|
||||
|
||||
static int jumponcond (FuncState *fs, expdesc *e, int cond) {
|
||||
if (e->k == VRELOCABLE) {
|
||||
Instruction ie = getcode(fs, e);
|
||||
if (GET_OPCODE(ie) == OP_NOT) {
|
||||
fs->pc--; /* remove previous OP_NOT */
|
||||
return condjump(fs, OP_TEST, GETARG_B(ie), 0, !cond);
|
||||
}
|
||||
/* else go through */
|
||||
}
|
||||
discharge2anyreg(fs, e);
|
||||
freeexp(fs, e);
|
||||
return condjump(fs, OP_TESTSET, NO_REG, e->u.info, cond);
|
||||
}
|
||||
|
||||
|
||||
void luaK_goiftrue (FuncState *fs, expdesc *e) {
|
||||
int pc; /* pc of last jump */
|
||||
luaK_dischargevars(fs, e);
|
||||
switch (e->k) {
|
||||
case VJMP: {
|
||||
invertjump(fs, e);
|
||||
pc = e->u.info;
|
||||
break;
|
||||
}
|
||||
case VK: case VKFLT: case VKINT: case VTRUE: {
|
||||
pc = NO_JUMP; /* always true; do nothing */
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
pc = jumponcond(fs, e, 0);
|
||||
break;
|
||||
}
|
||||
}
|
||||
luaK_concat(fs, &e->f, pc); /* insert last jump in 'f' list */
|
||||
luaK_patchtohere(fs, e->t);
|
||||
e->t = NO_JUMP;
|
||||
}
|
||||
|
||||
|
||||
void luaK_goiffalse (FuncState *fs, expdesc *e) {
|
||||
int pc; /* pc of last jump */
|
||||
luaK_dischargevars(fs, e);
|
||||
switch (e->k) {
|
||||
case VJMP: {
|
||||
pc = e->u.info;
|
||||
break;
|
||||
}
|
||||
case VNIL: case VFALSE: {
|
||||
pc = NO_JUMP; /* always false; do nothing */
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
pc = jumponcond(fs, e, 1);
|
||||
break;
|
||||
}
|
||||
}
|
||||
luaK_concat(fs, &e->t, pc); /* insert last jump in 't' list */
|
||||
luaK_patchtohere(fs, e->f);
|
||||
e->f = NO_JUMP;
|
||||
}
|
||||
|
||||
|
||||
static void codenot (FuncState *fs, expdesc *e) {
|
||||
luaK_dischargevars(fs, e);
|
||||
switch (e->k) {
|
||||
case VNIL: case VFALSE: {
|
||||
e->k = VTRUE;
|
||||
break;
|
||||
}
|
||||
case VK: case VKFLT: case VKINT: case VTRUE: {
|
||||
e->k = VFALSE;
|
||||
break;
|
||||
}
|
||||
case VJMP: {
|
||||
invertjump(fs, e);
|
||||
break;
|
||||
}
|
||||
case VRELOCABLE:
|
||||
case VNONRELOC: {
|
||||
discharge2anyreg(fs, e);
|
||||
freeexp(fs, e);
|
||||
e->u.info = luaK_codeABC(fs, OP_NOT, 0, e->u.info, 0);
|
||||
e->k = VRELOCABLE;
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
lua_assert(0); /* cannot happen */
|
||||
break;
|
||||
}
|
||||
}
|
||||
/* interchange true and false lists */
|
||||
{ int temp = e->f; e->f = e->t; e->t = temp; }
|
||||
removevalues(fs, e->f);
|
||||
removevalues(fs, e->t);
|
||||
}
|
||||
|
||||
|
||||
void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k) {
|
||||
lua_assert(!hasjumps(t));
|
||||
t->u.ind.t = t->u.info;
|
||||
t->u.ind.idx = luaK_exp2RK(fs, k);
|
||||
t->u.ind.vt = (t->k == VUPVAL) ? VUPVAL
|
||||
: check_exp(vkisinreg(t->k), VLOCAL);
|
||||
t->k = VINDEXED;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** return false if folding can raise an error
|
||||
*/
|
||||
static int validop (int op, TValue *v1, TValue *v2) {
|
||||
lua_Integer i;
|
||||
if (luai_numinvalidop(op, nvalue(v1), nvalue(v2))) return 0;
|
||||
switch (op) {
|
||||
case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR:
|
||||
case LUA_OPSHL: case LUA_OPSHR: case LUA_OPBNOT: /* conversion errors */
|
||||
return (tointeger(v1, &i) && tointeger(v2, &i));
|
||||
case LUA_OPIDIV: case LUA_OPMOD: /* integer division by 0 */
|
||||
return !(ttisinteger(v1) && ttisinteger(v2) && ivalue(v2) == 0);
|
||||
default: return 1; /* everything else is valid */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Try to "constant-fold" an operation; return 1 iff successful
|
||||
*/
|
||||
static int constfolding (FuncState *fs, int op, expdesc *e1, expdesc *e2) {
|
||||
TValue v1, v2, res;
|
||||
if (!tonumeral(e1, &v1) || !tonumeral(e2, &v2) || !validop(op, &v1, &v2))
|
||||
return 0; /* non-numeric operands or not safe to fold */
|
||||
luaO_arith(fs->ls->L, op, &v1, &v2, &res);
|
||||
if (ttisinteger(&res)) {
|
||||
e1->k = VKINT;
|
||||
e1->u.ival = ivalue(&res);
|
||||
}
|
||||
else {
|
||||
lua_Number n = fltvalue(&res);
|
||||
if (luai_numisnan(n) || isminuszero(n))
|
||||
return 0; /* folds neither NaN nor -0 */
|
||||
e1->k = VKFLT;
|
||||
e1->u.nval = n;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Code for binary and unary expressions that "produce values"
|
||||
** (arithmetic operations, bitwise operations, concat, length). First
|
||||
** try to do constant folding (only for numeric [arithmetic and
|
||||
** bitwise] operations, which is what 'lua_arith' accepts).
|
||||
** Expression to produce final result will be encoded in 'e1'.
|
||||
*/
|
||||
static void codeexpval (FuncState *fs, OpCode op,
|
||||
expdesc *e1, expdesc *e2, int line) {
|
||||
lua_assert(op >= OP_ADD);
|
||||
if (op <= OP_BNOT && constfolding(fs, op - OP_ADD + LUA_OPADD, e1, e2))
|
||||
return; /* result has been folded */
|
||||
else {
|
||||
int o1, o2;
|
||||
/* move operands to registers (if needed) */
|
||||
if (op == OP_UNM || op == OP_BNOT || op == OP_LEN) { /* unary op? */
|
||||
o2 = 0; /* no second expression */
|
||||
o1 = luaK_exp2anyreg(fs, e1); /* cannot operate on constants */
|
||||
}
|
||||
else { /* regular case (binary operators) */
|
||||
o2 = luaK_exp2RK(fs, e2); /* both operands are "RK" */
|
||||
o1 = luaK_exp2RK(fs, e1);
|
||||
}
|
||||
if (o1 > o2) { /* free registers in proper order */
|
||||
freeexp(fs, e1);
|
||||
freeexp(fs, e2);
|
||||
}
|
||||
else {
|
||||
freeexp(fs, e2);
|
||||
freeexp(fs, e1);
|
||||
}
|
||||
e1->u.info = luaK_codeABC(fs, op, 0, o1, o2); /* generate opcode */
|
||||
e1->k = VRELOCABLE; /* all those operations are relocable */
|
||||
luaK_fixline(fs, line);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void codecomp (FuncState *fs, OpCode op, int cond, expdesc *e1,
|
||||
expdesc *e2) {
|
||||
int o1 = luaK_exp2RK(fs, e1);
|
||||
int o2 = luaK_exp2RK(fs, e2);
|
||||
freeexp(fs, e2);
|
||||
freeexp(fs, e1);
|
||||
if (cond == 0 && op != OP_EQ) {
|
||||
int temp; /* exchange args to replace by '<' or '<=' */
|
||||
temp = o1; o1 = o2; o2 = temp; /* o1 <==> o2 */
|
||||
cond = 1;
|
||||
}
|
||||
e1->u.info = condjump(fs, op, cond, o1, o2);
|
||||
e1->k = VJMP;
|
||||
}
|
||||
|
||||
|
||||
void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e, int line) {
|
||||
expdesc e2;
|
||||
e2.t = e2.f = NO_JUMP; e2.k = VKINT; e2.u.ival = 0;
|
||||
switch (op) {
|
||||
case OPR_MINUS: case OPR_BNOT: case OPR_LEN: {
|
||||
codeexpval(fs, cast(OpCode, (op - OPR_MINUS) + OP_UNM), e, &e2, line);
|
||||
break;
|
||||
}
|
||||
case OPR_NOT: codenot(fs, e); break;
|
||||
default: lua_assert(0);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaK_infix (FuncState *fs, BinOpr op, expdesc *v) {
|
||||
switch (op) {
|
||||
case OPR_AND: {
|
||||
luaK_goiftrue(fs, v);
|
||||
break;
|
||||
}
|
||||
case OPR_OR: {
|
||||
luaK_goiffalse(fs, v);
|
||||
break;
|
||||
}
|
||||
case OPR_CONCAT: {
|
||||
luaK_exp2nextreg(fs, v); /* operand must be on the 'stack' */
|
||||
break;
|
||||
}
|
||||
case OPR_ADD: case OPR_SUB:
|
||||
case OPR_MUL: case OPR_DIV: case OPR_IDIV:
|
||||
case OPR_MOD: case OPR_POW:
|
||||
case OPR_BAND: case OPR_BOR: case OPR_BXOR:
|
||||
case OPR_SHL: case OPR_SHR: {
|
||||
if (!tonumeral(v, NULL)) luaK_exp2RK(fs, v);
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
luaK_exp2RK(fs, v);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaK_posfix (FuncState *fs, BinOpr op,
|
||||
expdesc *e1, expdesc *e2, int line) {
|
||||
switch (op) {
|
||||
case OPR_AND: {
|
||||
lua_assert(e1->t == NO_JUMP); /* list must be closed */
|
||||
luaK_dischargevars(fs, e2);
|
||||
luaK_concat(fs, &e2->f, e1->f);
|
||||
*e1 = *e2;
|
||||
break;
|
||||
}
|
||||
case OPR_OR: {
|
||||
lua_assert(e1->f == NO_JUMP); /* list must be closed */
|
||||
luaK_dischargevars(fs, e2);
|
||||
luaK_concat(fs, &e2->t, e1->t);
|
||||
*e1 = *e2;
|
||||
break;
|
||||
}
|
||||
case OPR_CONCAT: {
|
||||
luaK_exp2val(fs, e2);
|
||||
if (e2->k == VRELOCABLE && GET_OPCODE(getcode(fs, e2)) == OP_CONCAT) {
|
||||
lua_assert(e1->u.info == GETARG_B(getcode(fs, e2))-1);
|
||||
freeexp(fs, e1);
|
||||
SETARG_B(getcode(fs, e2), e1->u.info);
|
||||
e1->k = VRELOCABLE; e1->u.info = e2->u.info;
|
||||
}
|
||||
else {
|
||||
luaK_exp2nextreg(fs, e2); /* operand must be on the 'stack' */
|
||||
codeexpval(fs, OP_CONCAT, e1, e2, line);
|
||||
}
|
||||
break;
|
||||
}
|
||||
case OPR_ADD: case OPR_SUB: case OPR_MUL: case OPR_DIV:
|
||||
case OPR_IDIV: case OPR_MOD: case OPR_POW:
|
||||
case OPR_BAND: case OPR_BOR: case OPR_BXOR:
|
||||
case OPR_SHL: case OPR_SHR: {
|
||||
codeexpval(fs, cast(OpCode, (op - OPR_ADD) + OP_ADD), e1, e2, line);
|
||||
break;
|
||||
}
|
||||
case OPR_EQ: case OPR_LT: case OPR_LE: {
|
||||
codecomp(fs, cast(OpCode, op - OPR_EQ + OP_EQ), 1, e1, e2);
|
||||
break;
|
||||
}
|
||||
case OPR_NE: case OPR_GT: case OPR_GE: {
|
||||
codecomp(fs, cast(OpCode, op - OPR_NE + OP_EQ), 0, e1, e2);
|
||||
break;
|
||||
}
|
||||
default: lua_assert(0);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaK_fixline (FuncState *fs, int line) {
|
||||
fs->f->lineinfo[fs->pc - 1] = line;
|
||||
}
|
||||
|
||||
|
||||
void luaK_setlist (FuncState *fs, int base, int nelems, int tostore) {
|
||||
int c = (nelems - 1)/LFIELDS_PER_FLUSH + 1;
|
||||
int b = (tostore == LUA_MULTRET) ? 0 : tostore;
|
||||
lua_assert(tostore != 0);
|
||||
if (c <= MAXARG_C)
|
||||
luaK_codeABC(fs, OP_SETLIST, base, b, c);
|
||||
else if (c <= MAXARG_Ax) {
|
||||
luaK_codeABC(fs, OP_SETLIST, base, b, 0);
|
||||
codeextraarg(fs, c);
|
||||
}
|
||||
else
|
||||
luaX_syntaxerror(fs->ls, "constructor too long");
|
||||
fs->freereg = base + 1; /* free registers with list values */
|
||||
}
|
||||
|
||||
@ -0,0 +1,168 @@
|
||||
/*
|
||||
** $Id: lcorolib.c,v 1.9 2014/11/02 19:19:04 roberto Exp $
|
||||
** Coroutine Library
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lcorolib_c
|
||||
#define LUA_LIB
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lauxlib.h"
|
||||
#include "lualib.h"
|
||||
|
||||
|
||||
static lua_State *getco (lua_State *L) {
|
||||
lua_State *co = lua_tothread(L, 1);
|
||||
luaL_argcheck(L, co, 1, "thread expected");
|
||||
return co;
|
||||
}
|
||||
|
||||
|
||||
static int auxresume (lua_State *L, lua_State *co, int narg) {
|
||||
int status;
|
||||
if (!lua_checkstack(co, narg)) {
|
||||
lua_pushliteral(L, "too many arguments to resume");
|
||||
return -1; /* error flag */
|
||||
}
|
||||
if (lua_status(co) == LUA_OK && lua_gettop(co) == 0) {
|
||||
lua_pushliteral(L, "cannot resume dead coroutine");
|
||||
return -1; /* error flag */
|
||||
}
|
||||
lua_xmove(L, co, narg);
|
||||
status = lua_resume(co, L, narg);
|
||||
if (status == LUA_OK || status == LUA_YIELD) {
|
||||
int nres = lua_gettop(co);
|
||||
if (!lua_checkstack(L, nres + 1)) {
|
||||
lua_pop(co, nres); /* remove results anyway */
|
||||
lua_pushliteral(L, "too many results to resume");
|
||||
return -1; /* error flag */
|
||||
}
|
||||
lua_xmove(co, L, nres); /* move yielded values */
|
||||
return nres;
|
||||
}
|
||||
else {
|
||||
lua_xmove(co, L, 1); /* move error message */
|
||||
return -1; /* error flag */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int luaB_coresume (lua_State *L) {
|
||||
lua_State *co = getco(L);
|
||||
int r;
|
||||
r = auxresume(L, co, lua_gettop(L) - 1);
|
||||
if (r < 0) {
|
||||
lua_pushboolean(L, 0);
|
||||
lua_insert(L, -2);
|
||||
return 2; /* return false + error message */
|
||||
}
|
||||
else {
|
||||
lua_pushboolean(L, 1);
|
||||
lua_insert(L, -(r + 1));
|
||||
return r + 1; /* return true + 'resume' returns */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int luaB_auxwrap (lua_State *L) {
|
||||
lua_State *co = lua_tothread(L, lua_upvalueindex(1));
|
||||
int r = auxresume(L, co, lua_gettop(L));
|
||||
if (r < 0) {
|
||||
if (lua_isstring(L, -1)) { /* error object is a string? */
|
||||
luaL_where(L, 1); /* add extra info */
|
||||
lua_insert(L, -2);
|
||||
lua_concat(L, 2);
|
||||
}
|
||||
return lua_error(L); /* propagate error */
|
||||
}
|
||||
return r;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_cocreate (lua_State *L) {
|
||||
lua_State *NL;
|
||||
luaL_checktype(L, 1, LUA_TFUNCTION);
|
||||
NL = lua_newthread(L);
|
||||
lua_pushvalue(L, 1); /* move function to top */
|
||||
lua_xmove(L, NL, 1); /* move function from L to NL */
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_cowrap (lua_State *L) {
|
||||
luaB_cocreate(L);
|
||||
lua_pushcclosure(L, luaB_auxwrap, 1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_yield (lua_State *L) {
|
||||
return lua_yield(L, lua_gettop(L));
|
||||
}
|
||||
|
||||
|
||||
static int luaB_costatus (lua_State *L) {
|
||||
lua_State *co = getco(L);
|
||||
if (L == co) lua_pushliteral(L, "running");
|
||||
else {
|
||||
switch (lua_status(co)) {
|
||||
case LUA_YIELD:
|
||||
lua_pushliteral(L, "suspended");
|
||||
break;
|
||||
case LUA_OK: {
|
||||
lua_Debug ar;
|
||||
if (lua_getstack(co, 0, &ar) > 0) /* does it have frames? */
|
||||
lua_pushliteral(L, "normal"); /* it is running */
|
||||
else if (lua_gettop(co) == 0)
|
||||
lua_pushliteral(L, "dead");
|
||||
else
|
||||
lua_pushliteral(L, "suspended"); /* initial state */
|
||||
break;
|
||||
}
|
||||
default: /* some error occurred */
|
||||
lua_pushliteral(L, "dead");
|
||||
break;
|
||||
}
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_yieldable (lua_State *L) {
|
||||
lua_pushboolean(L, lua_isyieldable(L));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int luaB_corunning (lua_State *L) {
|
||||
int ismain = lua_pushthread(L);
|
||||
lua_pushboolean(L, ismain);
|
||||
return 2;
|
||||
}
|
||||
|
||||
|
||||
static const luaL_Reg co_funcs[] = {
|
||||
{"create", luaB_cocreate},
|
||||
{"resume", luaB_coresume},
|
||||
{"running", luaB_corunning},
|
||||
{"status", luaB_costatus},
|
||||
{"wrap", luaB_cowrap},
|
||||
{"yield", luaB_yield},
|
||||
{"isyieldable", luaB_yieldable},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
|
||||
LUAMOD_API int luaopen_coroutine (lua_State *L) {
|
||||
luaL_newlib(L, co_funcs);
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -0,0 +1,55 @@
|
||||
/*
|
||||
** $Id: lctype.c,v 1.12 2014/11/02 19:19:04 roberto Exp $
|
||||
** 'ctype' functions for Lua
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lctype_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include "lctype.h"
|
||||
|
||||
#if !LUA_USE_CTYPE /* { */
|
||||
|
||||
#include <limits.h>
|
||||
|
||||
LUAI_DDEF const lu_byte luai_ctype_[UCHAR_MAX + 2] = {
|
||||
0x00, /* EOZ */
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0. */
|
||||
0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1. */
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x0c, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, /* 2. */
|
||||
0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
|
||||
0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, /* 3. */
|
||||
0x16, 0x16, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
|
||||
0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 4. */
|
||||
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
|
||||
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 5. */
|
||||
0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x05,
|
||||
0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 6. */
|
||||
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
|
||||
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 7. */
|
||||
0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8. */
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 9. */
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* a. */
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b. */
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c. */
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* d. */
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* e. */
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* f. */
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
|
||||
|
||||
#endif /* } */
|
||||
@ -0,0 +1,432 @@
|
||||
/*
|
||||
** $Id: ldblib.c,v 1.147 2014/12/08 15:47:25 roberto Exp $
|
||||
** Interface from Lua to its debug API
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define ldblib_c
|
||||
#define LUA_LIB
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lauxlib.h"
|
||||
#include "lualib.h"
|
||||
|
||||
|
||||
/*
|
||||
** The hook table at registry[&HOOKKEY] maps threads to their current
|
||||
** hook function. (We only need the unique address of 'HOOKKEY'.)
|
||||
*/
|
||||
static const int HOOKKEY = 0;
|
||||
|
||||
|
||||
static int db_getregistry (lua_State *L) {
|
||||
lua_pushvalue(L, LUA_REGISTRYINDEX);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int db_getmetatable (lua_State *L) {
|
||||
luaL_checkany(L, 1);
|
||||
if (!lua_getmetatable(L, 1)) {
|
||||
lua_pushnil(L); /* no metatable */
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int db_setmetatable (lua_State *L) {
|
||||
int t = lua_type(L, 2);
|
||||
luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
|
||||
"nil or table expected");
|
||||
lua_settop(L, 2);
|
||||
lua_setmetatable(L, 1);
|
||||
return 1; /* return 1st argument */
|
||||
}
|
||||
|
||||
|
||||
static int db_getuservalue (lua_State *L) {
|
||||
if (lua_type(L, 1) != LUA_TUSERDATA)
|
||||
lua_pushnil(L);
|
||||
else
|
||||
lua_getuservalue(L, 1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int db_setuservalue (lua_State *L) {
|
||||
luaL_checktype(L, 1, LUA_TUSERDATA);
|
||||
luaL_checkany(L, 2);
|
||||
lua_settop(L, 2);
|
||||
lua_setuservalue(L, 1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Auxiliary function used by several library functions: check for
|
||||
** an optional thread as function's first argument and set 'arg' with
|
||||
** 1 if this argument is present (so that functions can skip it to
|
||||
** access their other arguments)
|
||||
*/
|
||||
static lua_State *getthread (lua_State *L, int *arg) {
|
||||
if (lua_isthread(L, 1)) {
|
||||
*arg = 1;
|
||||
return lua_tothread(L, 1);
|
||||
}
|
||||
else {
|
||||
*arg = 0;
|
||||
return L; /* function will operate over current thread */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Variations of 'lua_settable', used by 'db_getinfo' to put results
|
||||
** from 'lua_getinfo' into result table. Key is always a string;
|
||||
** value can be a string, an int, or a boolean.
|
||||
*/
|
||||
static void settabss (lua_State *L, const char *k, const char *v) {
|
||||
lua_pushstring(L, v);
|
||||
lua_setfield(L, -2, k);
|
||||
}
|
||||
|
||||
static void settabsi (lua_State *L, const char *k, int v) {
|
||||
lua_pushinteger(L, v);
|
||||
lua_setfield(L, -2, k);
|
||||
}
|
||||
|
||||
static void settabsb (lua_State *L, const char *k, int v) {
|
||||
lua_pushboolean(L, v);
|
||||
lua_setfield(L, -2, k);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** In function 'db_getinfo', the call to 'lua_getinfo' may push
|
||||
** results on the stack; later it creates the result table to put
|
||||
** these objects. Function 'treatstackoption' puts the result from
|
||||
** 'lua_getinfo' on top of the result table so that it can call
|
||||
** 'lua_setfield'.
|
||||
*/
|
||||
static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) {
|
||||
if (L == L1)
|
||||
lua_rotate(L, -2, 1); /* exchange object and table */
|
||||
else
|
||||
lua_xmove(L1, L, 1); /* move object to the "main" stack */
|
||||
lua_setfield(L, -2, fname); /* put object into table */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Calls 'lua_getinfo' and collects all results in a new table.
|
||||
*/
|
||||
static int db_getinfo (lua_State *L) {
|
||||
lua_Debug ar;
|
||||
int arg;
|
||||
lua_State *L1 = getthread(L, &arg);
|
||||
const char *options = luaL_optstring(L, arg+2, "flnStu");
|
||||
if (lua_isfunction(L, arg + 1)) { /* info about a function? */
|
||||
options = lua_pushfstring(L, ">%s", options); /* add '>' to 'options' */
|
||||
lua_pushvalue(L, arg + 1); /* move function to 'L1' stack */
|
||||
lua_xmove(L, L1, 1);
|
||||
}
|
||||
else { /* stack level */
|
||||
if (!lua_getstack(L1, (int)luaL_checkinteger(L, arg + 1), &ar)) {
|
||||
lua_pushnil(L); /* level out of range */
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
if (!lua_getinfo(L1, options, &ar))
|
||||
return luaL_argerror(L, arg+2, "invalid option");
|
||||
lua_newtable(L); /* table to collect results */
|
||||
if (strchr(options, 'S')) {
|
||||
settabss(L, "source", ar.source);
|
||||
settabss(L, "short_src", ar.short_src);
|
||||
settabsi(L, "linedefined", ar.linedefined);
|
||||
settabsi(L, "lastlinedefined", ar.lastlinedefined);
|
||||
settabss(L, "what", ar.what);
|
||||
}
|
||||
if (strchr(options, 'l'))
|
||||
settabsi(L, "currentline", ar.currentline);
|
||||
if (strchr(options, 'u')) {
|
||||
settabsi(L, "nups", ar.nups);
|
||||
settabsi(L, "nparams", ar.nparams);
|
||||
settabsb(L, "isvararg", ar.isvararg);
|
||||
}
|
||||
if (strchr(options, 'n')) {
|
||||
settabss(L, "name", ar.name);
|
||||
settabss(L, "namewhat", ar.namewhat);
|
||||
}
|
||||
if (strchr(options, 't'))
|
||||
settabsb(L, "istailcall", ar.istailcall);
|
||||
if (strchr(options, 'L'))
|
||||
treatstackoption(L, L1, "activelines");
|
||||
if (strchr(options, 'f'))
|
||||
treatstackoption(L, L1, "func");
|
||||
return 1; /* return table */
|
||||
}
|
||||
|
||||
|
||||
static int db_getlocal (lua_State *L) {
|
||||
int arg;
|
||||
lua_State *L1 = getthread(L, &arg);
|
||||
lua_Debug ar;
|
||||
const char *name;
|
||||
int nvar = (int)luaL_checkinteger(L, arg + 2); /* local-variable index */
|
||||
if (lua_isfunction(L, arg + 1)) { /* function argument? */
|
||||
lua_pushvalue(L, arg + 1); /* push function */
|
||||
lua_pushstring(L, lua_getlocal(L, NULL, nvar)); /* push local name */
|
||||
return 1; /* return only name (there is no value) */
|
||||
}
|
||||
else { /* stack-level argument */
|
||||
int level = (int)luaL_checkinteger(L, arg + 1);
|
||||
if (!lua_getstack(L1, level, &ar)) /* out of range? */
|
||||
return luaL_argerror(L, arg+1, "level out of range");
|
||||
name = lua_getlocal(L1, &ar, nvar);
|
||||
if (name) {
|
||||
lua_xmove(L1, L, 1); /* move local value */
|
||||
lua_pushstring(L, name); /* push name */
|
||||
lua_rotate(L, -2, 1); /* re-order */
|
||||
return 2;
|
||||
}
|
||||
else {
|
||||
lua_pushnil(L); /* no name (nor value) */
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int db_setlocal (lua_State *L) {
|
||||
int arg;
|
||||
lua_State *L1 = getthread(L, &arg);
|
||||
lua_Debug ar;
|
||||
int level = (int)luaL_checkinteger(L, arg + 1);
|
||||
if (!lua_getstack(L1, level, &ar)) /* out of range? */
|
||||
return luaL_argerror(L, arg+1, "level out of range");
|
||||
luaL_checkany(L, arg+3);
|
||||
lua_settop(L, arg+3);
|
||||
lua_xmove(L, L1, 1);
|
||||
lua_pushstring(L, lua_setlocal(L1, &ar, (int)luaL_checkinteger(L, arg+2)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** get (if 'get' is true) or set an upvalue from a closure
|
||||
*/
|
||||
static int auxupvalue (lua_State *L, int get) {
|
||||
const char *name;
|
||||
int n = (int)luaL_checkinteger(L, 2); /* upvalue index */
|
||||
luaL_checktype(L, 1, LUA_TFUNCTION); /* closure */
|
||||
name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n);
|
||||
if (name == NULL) return 0;
|
||||
lua_pushstring(L, name);
|
||||
lua_insert(L, -(get+1)); /* no-op if get is false */
|
||||
return get + 1;
|
||||
}
|
||||
|
||||
|
||||
static int db_getupvalue (lua_State *L) {
|
||||
return auxupvalue(L, 1);
|
||||
}
|
||||
|
||||
|
||||
static int db_setupvalue (lua_State *L) {
|
||||
luaL_checkany(L, 3);
|
||||
return auxupvalue(L, 0);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Check whether a given upvalue from a given closure exists and
|
||||
** returns its index
|
||||
*/
|
||||
static int checkupval (lua_State *L, int argf, int argnup) {
|
||||
int nup = (int)luaL_checkinteger(L, argnup); /* upvalue index */
|
||||
luaL_checktype(L, argf, LUA_TFUNCTION); /* closure */
|
||||
luaL_argcheck(L, (lua_getupvalue(L, argf, nup) != NULL), argnup,
|
||||
"invalid upvalue index");
|
||||
return nup;
|
||||
}
|
||||
|
||||
|
||||
static int db_upvalueid (lua_State *L) {
|
||||
int n = checkupval(L, 1, 2);
|
||||
lua_pushlightuserdata(L, lua_upvalueid(L, 1, n));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int db_upvaluejoin (lua_State *L) {
|
||||
int n1 = checkupval(L, 1, 2);
|
||||
int n2 = checkupval(L, 3, 4);
|
||||
luaL_argcheck(L, !lua_iscfunction(L, 1), 1, "Lua function expected");
|
||||
luaL_argcheck(L, !lua_iscfunction(L, 3), 3, "Lua function expected");
|
||||
lua_upvaluejoin(L, 1, n1, 3, n2);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Call hook function registered at hook table for the current
|
||||
** thread (if there is one)
|
||||
*/
|
||||
static void hookf (lua_State *L, lua_Debug *ar) {
|
||||
static const char *const hooknames[] =
|
||||
{"call", "return", "line", "count", "tail call"};
|
||||
lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY);
|
||||
lua_pushthread(L);
|
||||
if (lua_rawget(L, -2) == LUA_TFUNCTION) { /* is there a hook function? */
|
||||
lua_pushstring(L, hooknames[(int)ar->event]); /* push event name */
|
||||
if (ar->currentline >= 0)
|
||||
lua_pushinteger(L, ar->currentline); /* push current line */
|
||||
else lua_pushnil(L);
|
||||
lua_assert(lua_getinfo(L, "lS", ar));
|
||||
lua_call(L, 2, 0); /* call hook function */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Convert a string mask (for 'sethook') into a bit mask
|
||||
*/
|
||||
static int makemask (const char *smask, int count) {
|
||||
int mask = 0;
|
||||
if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
|
||||
if (strchr(smask, 'r')) mask |= LUA_MASKRET;
|
||||
if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
|
||||
if (count > 0) mask |= LUA_MASKCOUNT;
|
||||
return mask;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Convert a bit mask (for 'gethook') into a string mask
|
||||
*/
|
||||
static char *unmakemask (int mask, char *smask) {
|
||||
int i = 0;
|
||||
if (mask & LUA_MASKCALL) smask[i++] = 'c';
|
||||
if (mask & LUA_MASKRET) smask[i++] = 'r';
|
||||
if (mask & LUA_MASKLINE) smask[i++] = 'l';
|
||||
smask[i] = '\0';
|
||||
return smask;
|
||||
}
|
||||
|
||||
|
||||
static int db_sethook (lua_State *L) {
|
||||
int arg, mask, count;
|
||||
lua_Hook func;
|
||||
lua_State *L1 = getthread(L, &arg);
|
||||
if (lua_isnoneornil(L, arg+1)) { /* no hook? */
|
||||
lua_settop(L, arg+1);
|
||||
func = NULL; mask = 0; count = 0; /* turn off hooks */
|
||||
}
|
||||
else {
|
||||
const char *smask = luaL_checkstring(L, arg+2);
|
||||
luaL_checktype(L, arg+1, LUA_TFUNCTION);
|
||||
count = (int)luaL_optinteger(L, arg + 3, 0);
|
||||
func = hookf; mask = makemask(smask, count);
|
||||
}
|
||||
if (lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY) == LUA_TNIL) {
|
||||
lua_createtable(L, 0, 2); /* create a hook table */
|
||||
lua_pushvalue(L, -1);
|
||||
lua_rawsetp(L, LUA_REGISTRYINDEX, &HOOKKEY); /* set it in position */
|
||||
lua_pushstring(L, "k");
|
||||
lua_setfield(L, -2, "__mode"); /** hooktable.__mode = "k" */
|
||||
lua_pushvalue(L, -1);
|
||||
lua_setmetatable(L, -2); /* setmetatable(hooktable) = hooktable */
|
||||
}
|
||||
lua_pushthread(L1); lua_xmove(L1, L, 1); /* key (thread) */
|
||||
lua_pushvalue(L, arg + 1); /* value (hook function) */
|
||||
lua_rawset(L, -3); /* hooktable[L1] = new Lua hook */
|
||||
lua_sethook(L1, func, mask, count);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int db_gethook (lua_State *L) {
|
||||
int arg;
|
||||
lua_State *L1 = getthread(L, &arg);
|
||||
char buff[5];
|
||||
int mask = lua_gethookmask(L1);
|
||||
lua_Hook hook = lua_gethook(L1);
|
||||
if (hook == NULL) /* no hook? */
|
||||
lua_pushnil(L);
|
||||
else if (hook != hookf) /* external hook? */
|
||||
lua_pushliteral(L, "external hook");
|
||||
else { /* hook table must exist */
|
||||
lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY);
|
||||
lua_pushthread(L1); lua_xmove(L1, L, 1);
|
||||
lua_rawget(L, -2); /* 1st result = hooktable[L1] */
|
||||
lua_remove(L, -2); /* remove hook table */
|
||||
}
|
||||
lua_pushstring(L, unmakemask(mask, buff)); /* 2nd result = mask */
|
||||
lua_pushinteger(L, lua_gethookcount(L1)); /* 3rd result = count */
|
||||
return 3;
|
||||
}
|
||||
|
||||
|
||||
static int db_debug (lua_State *L) {
|
||||
for (;;) {
|
||||
char buffer[250];
|
||||
lua_writestringerror("%s", "lua_debug> ");
|
||||
if (fgets(buffer, sizeof(buffer), stdin) == 0 ||
|
||||
strcmp(buffer, "cont\n") == 0)
|
||||
return 0;
|
||||
if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") ||
|
||||
lua_pcall(L, 0, 0, 0))
|
||||
lua_writestringerror("%s\n", lua_tostring(L, -1));
|
||||
lua_settop(L, 0); /* remove eventual returns */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int db_traceback (lua_State *L) {
|
||||
int arg;
|
||||
lua_State *L1 = getthread(L, &arg);
|
||||
const char *msg = lua_tostring(L, arg + 1);
|
||||
if (msg == NULL && !lua_isnoneornil(L, arg + 1)) /* non-string 'msg'? */
|
||||
lua_pushvalue(L, arg + 1); /* return it untouched */
|
||||
else {
|
||||
int level = (int)luaL_optinteger(L, arg + 2, (L == L1) ? 1 : 0);
|
||||
luaL_traceback(L, L1, msg, level);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static const luaL_Reg dblib[] = {
|
||||
{"debug", db_debug},
|
||||
{"getuservalue", db_getuservalue},
|
||||
{"gethook", db_gethook},
|
||||
{"getinfo", db_getinfo},
|
||||
{"getlocal", db_getlocal},
|
||||
{"getregistry", db_getregistry},
|
||||
{"getmetatable", db_getmetatable},
|
||||
{"getupvalue", db_getupvalue},
|
||||
{"upvaluejoin", db_upvaluejoin},
|
||||
{"upvalueid", db_upvalueid},
|
||||
{"setuservalue", db_setuservalue},
|
||||
{"sethook", db_sethook},
|
||||
{"setlocal", db_setlocal},
|
||||
{"setmetatable", db_setmetatable},
|
||||
{"setupvalue", db_setupvalue},
|
||||
{"traceback", db_traceback},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
LUAMOD_API int luaopen_debug (lua_State *L) {
|
||||
luaL_newlib(L, dblib);
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -0,0 +1,642 @@
|
||||
/*
|
||||
** $Id: ldebug.c,v 2.109 2014/12/10 11:30:09 roberto Exp $
|
||||
** Debug Interface
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define ldebug_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <stdarg.h>
|
||||
#include <stddef.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lapi.h"
|
||||
#include "lcode.h"
|
||||
#include "ldebug.h"
|
||||
#include "ldo.h"
|
||||
#include "lfunc.h"
|
||||
#include "lobject.h"
|
||||
#include "lopcodes.h"
|
||||
#include "lstate.h"
|
||||
#include "lstring.h"
|
||||
#include "ltable.h"
|
||||
#include "ltm.h"
|
||||
#include "lvm.h"
|
||||
|
||||
|
||||
|
||||
#define noLuaClosure(f) ((f) == NULL || (f)->c.tt == LUA_TCCL)
|
||||
|
||||
|
||||
static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name);
|
||||
|
||||
|
||||
static int currentpc (CallInfo *ci) {
|
||||
lua_assert(isLua(ci));
|
||||
return pcRel(ci->u.l.savedpc, ci_func(ci)->p);
|
||||
}
|
||||
|
||||
|
||||
static int currentline (CallInfo *ci) {
|
||||
return getfuncline(ci_func(ci)->p, currentpc(ci));
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** this function can be called asynchronous (e.g. during a signal)
|
||||
*/
|
||||
LUA_API void lua_sethook (lua_State *L, lua_Hook func, int mask, int count) {
|
||||
if (func == NULL || mask == 0) { /* turn off hooks? */
|
||||
mask = 0;
|
||||
func = NULL;
|
||||
}
|
||||
if (isLua(L->ci))
|
||||
L->oldpc = L->ci->u.l.savedpc;
|
||||
L->hook = func;
|
||||
L->basehookcount = count;
|
||||
resethookcount(L);
|
||||
L->hookmask = cast_byte(mask);
|
||||
}
|
||||
|
||||
|
||||
LUA_API lua_Hook lua_gethook (lua_State *L) {
|
||||
return L->hook;
|
||||
}
|
||||
|
||||
|
||||
LUA_API int lua_gethookmask (lua_State *L) {
|
||||
return L->hookmask;
|
||||
}
|
||||
|
||||
|
||||
LUA_API int lua_gethookcount (lua_State *L) {
|
||||
return L->basehookcount;
|
||||
}
|
||||
|
||||
|
||||
LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar) {
|
||||
int status;
|
||||
CallInfo *ci;
|
||||
if (level < 0) return 0; /* invalid (negative) level */
|
||||
lua_lock(L);
|
||||
for (ci = L->ci; level > 0 && ci != &L->base_ci; ci = ci->previous)
|
||||
level--;
|
||||
if (level == 0 && ci != &L->base_ci) { /* level found? */
|
||||
status = 1;
|
||||
ar->i_ci = ci;
|
||||
}
|
||||
else status = 0; /* no such level */
|
||||
lua_unlock(L);
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
static const char *upvalname (Proto *p, int uv) {
|
||||
TString *s = check_exp(uv < p->sizeupvalues, p->upvalues[uv].name);
|
||||
if (s == NULL) return "?";
|
||||
else return getstr(s);
|
||||
}
|
||||
|
||||
|
||||
static const char *findvararg (CallInfo *ci, int n, StkId *pos) {
|
||||
int nparams = clLvalue(ci->func)->p->numparams;
|
||||
if (n >= ci->u.l.base - ci->func - nparams)
|
||||
return NULL; /* no such vararg */
|
||||
else {
|
||||
*pos = ci->func + nparams + n;
|
||||
return "(*vararg)"; /* generic name for any vararg */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static const char *findlocal (lua_State *L, CallInfo *ci, int n,
|
||||
StkId *pos) {
|
||||
const char *name = NULL;
|
||||
StkId base;
|
||||
if (isLua(ci)) {
|
||||
if (n < 0) /* access to vararg values? */
|
||||
return findvararg(ci, -n, pos);
|
||||
else {
|
||||
base = ci->u.l.base;
|
||||
name = luaF_getlocalname(ci_func(ci)->p, n, currentpc(ci));
|
||||
}
|
||||
}
|
||||
else
|
||||
base = ci->func + 1;
|
||||
if (name == NULL) { /* no 'standard' name? */
|
||||
StkId limit = (ci == L->ci) ? L->top : ci->next->func;
|
||||
if (limit - base >= n && n > 0) /* is 'n' inside 'ci' stack? */
|
||||
name = "(*temporary)"; /* generic name for any valid slot */
|
||||
else
|
||||
return NULL; /* no name */
|
||||
}
|
||||
*pos = base + (n - 1);
|
||||
return name;
|
||||
}
|
||||
|
||||
|
||||
LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) {
|
||||
const char *name;
|
||||
lua_lock(L);
|
||||
if (ar == NULL) { /* information about non-active function? */
|
||||
if (!isLfunction(L->top - 1)) /* not a Lua function? */
|
||||
name = NULL;
|
||||
else /* consider live variables at function start (parameters) */
|
||||
name = luaF_getlocalname(clLvalue(L->top - 1)->p, n, 0);
|
||||
}
|
||||
else { /* active function; get information through 'ar' */
|
||||
StkId pos = 0; /* to avoid warnings */
|
||||
name = findlocal(L, ar->i_ci, n, &pos);
|
||||
if (name) {
|
||||
setobj2s(L, L->top, pos);
|
||||
api_incr_top(L);
|
||||
}
|
||||
}
|
||||
lua_unlock(L);
|
||||
return name;
|
||||
}
|
||||
|
||||
|
||||
LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) {
|
||||
StkId pos = 0; /* to avoid warnings */
|
||||
const char *name = findlocal(L, ar->i_ci, n, &pos);
|
||||
lua_lock(L);
|
||||
if (name)
|
||||
setobjs2s(L, pos, L->top - 1);
|
||||
L->top--; /* pop value */
|
||||
lua_unlock(L);
|
||||
return name;
|
||||
}
|
||||
|
||||
|
||||
static void funcinfo (lua_Debug *ar, Closure *cl) {
|
||||
if (noLuaClosure(cl)) {
|
||||
ar->source = "=[C]";
|
||||
ar->linedefined = -1;
|
||||
ar->lastlinedefined = -1;
|
||||
ar->what = "C";
|
||||
}
|
||||
else {
|
||||
Proto *p = cl->l.p;
|
||||
ar->source = p->source ? getstr(p->source) : "=?";
|
||||
ar->linedefined = p->linedefined;
|
||||
ar->lastlinedefined = p->lastlinedefined;
|
||||
ar->what = (ar->linedefined == 0) ? "main" : "Lua";
|
||||
}
|
||||
luaO_chunkid(ar->short_src, ar->source, LUA_IDSIZE);
|
||||
}
|
||||
|
||||
|
||||
static void collectvalidlines (lua_State *L, Closure *f) {
|
||||
if (noLuaClosure(f)) {
|
||||
setnilvalue(L->top);
|
||||
api_incr_top(L);
|
||||
}
|
||||
else {
|
||||
int i;
|
||||
TValue v;
|
||||
int *lineinfo = f->l.p->lineinfo;
|
||||
Table *t = luaH_new(L); /* new table to store active lines */
|
||||
sethvalue(L, L->top, t); /* push it on stack */
|
||||
api_incr_top(L);
|
||||
setbvalue(&v, 1); /* boolean 'true' to be the value of all indices */
|
||||
for (i = 0; i < f->l.p->sizelineinfo; i++) /* for all lines with code */
|
||||
luaH_setint(L, t, lineinfo[i], &v); /* table[line] = true */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar,
|
||||
Closure *f, CallInfo *ci) {
|
||||
int status = 1;
|
||||
for (; *what; what++) {
|
||||
switch (*what) {
|
||||
case 'S': {
|
||||
funcinfo(ar, f);
|
||||
break;
|
||||
}
|
||||
case 'l': {
|
||||
ar->currentline = (ci && isLua(ci)) ? currentline(ci) : -1;
|
||||
break;
|
||||
}
|
||||
case 'u': {
|
||||
ar->nups = (f == NULL) ? 0 : f->c.nupvalues;
|
||||
if (noLuaClosure(f)) {
|
||||
ar->isvararg = 1;
|
||||
ar->nparams = 0;
|
||||
}
|
||||
else {
|
||||
ar->isvararg = f->l.p->is_vararg;
|
||||
ar->nparams = f->l.p->numparams;
|
||||
}
|
||||
break;
|
||||
}
|
||||
case 't': {
|
||||
ar->istailcall = (ci) ? ci->callstatus & CIST_TAIL : 0;
|
||||
break;
|
||||
}
|
||||
case 'n': {
|
||||
/* calling function is a known Lua function? */
|
||||
if (ci && !(ci->callstatus & CIST_TAIL) && isLua(ci->previous))
|
||||
ar->namewhat = getfuncname(L, ci->previous, &ar->name);
|
||||
else
|
||||
ar->namewhat = NULL;
|
||||
if (ar->namewhat == NULL) {
|
||||
ar->namewhat = ""; /* not found */
|
||||
ar->name = NULL;
|
||||
}
|
||||
break;
|
||||
}
|
||||
case 'L':
|
||||
case 'f': /* handled by lua_getinfo */
|
||||
break;
|
||||
default: status = 0; /* invalid option */
|
||||
}
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) {
|
||||
int status;
|
||||
Closure *cl;
|
||||
CallInfo *ci;
|
||||
StkId func;
|
||||
lua_lock(L);
|
||||
if (*what == '>') {
|
||||
ci = NULL;
|
||||
func = L->top - 1;
|
||||
api_check(ttisfunction(func), "function expected");
|
||||
what++; /* skip the '>' */
|
||||
L->top--; /* pop function */
|
||||
}
|
||||
else {
|
||||
ci = ar->i_ci;
|
||||
func = ci->func;
|
||||
lua_assert(ttisfunction(ci->func));
|
||||
}
|
||||
cl = ttisclosure(func) ? clvalue(func) : NULL;
|
||||
status = auxgetinfo(L, what, ar, cl, ci);
|
||||
if (strchr(what, 'f')) {
|
||||
setobjs2s(L, L->top, func);
|
||||
api_incr_top(L);
|
||||
}
|
||||
if (strchr(what, 'L'))
|
||||
collectvalidlines(L, cl);
|
||||
lua_unlock(L);
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Symbolic Execution
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
static const char *getobjname (Proto *p, int lastpc, int reg,
|
||||
const char **name);
|
||||
|
||||
|
||||
/*
|
||||
** find a "name" for the RK value 'c'
|
||||
*/
|
||||
static void kname (Proto *p, int pc, int c, const char **name) {
|
||||
if (ISK(c)) { /* is 'c' a constant? */
|
||||
TValue *kvalue = &p->k[INDEXK(c)];
|
||||
if (ttisstring(kvalue)) { /* literal constant? */
|
||||
*name = svalue(kvalue); /* it is its own name */
|
||||
return;
|
||||
}
|
||||
/* else no reasonable name found */
|
||||
}
|
||||
else { /* 'c' is a register */
|
||||
const char *what = getobjname(p, pc, c, name); /* search for 'c' */
|
||||
if (what && *what == 'c') { /* found a constant name? */
|
||||
return; /* 'name' already filled */
|
||||
}
|
||||
/* else no reasonable name found */
|
||||
}
|
||||
*name = "?"; /* no reasonable name found */
|
||||
}
|
||||
|
||||
|
||||
static int filterpc (int pc, int jmptarget) {
|
||||
if (pc < jmptarget) /* is code conditional (inside a jump)? */
|
||||
return -1; /* cannot know who sets that register */
|
||||
else return pc; /* current position sets that register */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** try to find last instruction before 'lastpc' that modified register 'reg'
|
||||
*/
|
||||
static int findsetreg (Proto *p, int lastpc, int reg) {
|
||||
int pc;
|
||||
int setreg = -1; /* keep last instruction that changed 'reg' */
|
||||
int jmptarget = 0; /* any code before this address is conditional */
|
||||
for (pc = 0; pc < lastpc; pc++) {
|
||||
Instruction i = p->code[pc];
|
||||
OpCode op = GET_OPCODE(i);
|
||||
int a = GETARG_A(i);
|
||||
switch (op) {
|
||||
case OP_LOADNIL: {
|
||||
int b = GETARG_B(i);
|
||||
if (a <= reg && reg <= a + b) /* set registers from 'a' to 'a+b' */
|
||||
setreg = filterpc(pc, jmptarget);
|
||||
break;
|
||||
}
|
||||
case OP_TFORCALL: {
|
||||
if (reg >= a + 2) /* affect all regs above its base */
|
||||
setreg = filterpc(pc, jmptarget);
|
||||
break;
|
||||
}
|
||||
case OP_CALL:
|
||||
case OP_TAILCALL: {
|
||||
if (reg >= a) /* affect all registers above base */
|
||||
setreg = filterpc(pc, jmptarget);
|
||||
break;
|
||||
}
|
||||
case OP_JMP: {
|
||||
int b = GETARG_sBx(i);
|
||||
int dest = pc + 1 + b;
|
||||
/* jump is forward and do not skip 'lastpc'? */
|
||||
if (pc < dest && dest <= lastpc) {
|
||||
if (dest > jmptarget)
|
||||
jmptarget = dest; /* update 'jmptarget' */
|
||||
}
|
||||
break;
|
||||
}
|
||||
default:
|
||||
if (testAMode(op) && reg == a) /* any instruction that set A */
|
||||
setreg = filterpc(pc, jmptarget);
|
||||
break;
|
||||
}
|
||||
}
|
||||
return setreg;
|
||||
}
|
||||
|
||||
|
||||
static const char *getobjname (Proto *p, int lastpc, int reg,
|
||||
const char **name) {
|
||||
int pc;
|
||||
*name = luaF_getlocalname(p, reg + 1, lastpc);
|
||||
if (*name) /* is a local? */
|
||||
return "local";
|
||||
/* else try symbolic execution */
|
||||
pc = findsetreg(p, lastpc, reg);
|
||||
if (pc != -1) { /* could find instruction? */
|
||||
Instruction i = p->code[pc];
|
||||
OpCode op = GET_OPCODE(i);
|
||||
switch (op) {
|
||||
case OP_MOVE: {
|
||||
int b = GETARG_B(i); /* move from 'b' to 'a' */
|
||||
if (b < GETARG_A(i))
|
||||
return getobjname(p, pc, b, name); /* get name for 'b' */
|
||||
break;
|
||||
}
|
||||
case OP_GETTABUP:
|
||||
case OP_GETTABLE: {
|
||||
int k = GETARG_C(i); /* key index */
|
||||
int t = GETARG_B(i); /* table index */
|
||||
const char *vn = (op == OP_GETTABLE) /* name of indexed variable */
|
||||
? luaF_getlocalname(p, t + 1, pc)
|
||||
: upvalname(p, t);
|
||||
kname(p, pc, k, name);
|
||||
return (vn && strcmp(vn, LUA_ENV) == 0) ? "global" : "field";
|
||||
}
|
||||
case OP_GETUPVAL: {
|
||||
*name = upvalname(p, GETARG_B(i));
|
||||
return "upvalue";
|
||||
}
|
||||
case OP_LOADK:
|
||||
case OP_LOADKX: {
|
||||
int b = (op == OP_LOADK) ? GETARG_Bx(i)
|
||||
: GETARG_Ax(p->code[pc + 1]);
|
||||
if (ttisstring(&p->k[b])) {
|
||||
*name = svalue(&p->k[b]);
|
||||
return "constant";
|
||||
}
|
||||
break;
|
||||
}
|
||||
case OP_SELF: {
|
||||
int k = GETARG_C(i); /* key index */
|
||||
kname(p, pc, k, name);
|
||||
return "method";
|
||||
}
|
||||
default: break; /* go through to return NULL */
|
||||
}
|
||||
}
|
||||
return NULL; /* could not find reasonable name */
|
||||
}
|
||||
|
||||
|
||||
static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
|
||||
TMS tm = (TMS)0; /* to avoid warnings */
|
||||
Proto *p = ci_func(ci)->p; /* calling function */
|
||||
int pc = currentpc(ci); /* calling instruction index */
|
||||
Instruction i = p->code[pc]; /* calling instruction */
|
||||
if (ci->callstatus & CIST_HOOKED) { /* was it called inside a hook? */
|
||||
*name = "?";
|
||||
return "hook";
|
||||
}
|
||||
switch (GET_OPCODE(i)) {
|
||||
case OP_CALL:
|
||||
case OP_TAILCALL: /* get function name */
|
||||
return getobjname(p, pc, GETARG_A(i), name);
|
||||
case OP_TFORCALL: { /* for iterator */
|
||||
*name = "for iterator";
|
||||
return "for iterator";
|
||||
}
|
||||
/* all other instructions can call only through metamethods */
|
||||
case OP_SELF: case OP_GETTABUP: case OP_GETTABLE:
|
||||
tm = TM_INDEX;
|
||||
break;
|
||||
case OP_SETTABUP: case OP_SETTABLE:
|
||||
tm = TM_NEWINDEX;
|
||||
break;
|
||||
case OP_ADD: case OP_SUB: case OP_MUL: case OP_MOD:
|
||||
case OP_POW: case OP_DIV: case OP_IDIV: case OP_BAND:
|
||||
case OP_BOR: case OP_BXOR: case OP_SHL: case OP_SHR: {
|
||||
int offset = cast_int(GET_OPCODE(i)) - cast_int(OP_ADD); /* ORDER OP */
|
||||
tm = cast(TMS, offset + cast_int(TM_ADD)); /* ORDER TM */
|
||||
break;
|
||||
}
|
||||
case OP_UNM: tm = TM_UNM; break;
|
||||
case OP_BNOT: tm = TM_BNOT; break;
|
||||
case OP_LEN: tm = TM_LEN; break;
|
||||
case OP_CONCAT: tm = TM_CONCAT; break;
|
||||
case OP_EQ: tm = TM_EQ; break;
|
||||
case OP_LT: tm = TM_LT; break;
|
||||
case OP_LE: tm = TM_LE; break;
|
||||
default: lua_assert(0); /* other instructions cannot call a function */
|
||||
}
|
||||
*name = getstr(G(L)->tmname[tm]);
|
||||
return "metamethod";
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** The subtraction of two potentially unrelated pointers is
|
||||
** not ISO C, but it should not crash a program; the subsequent
|
||||
** checks are ISO C and ensure a correct result.
|
||||
*/
|
||||
static int isinstack (CallInfo *ci, const TValue *o) {
|
||||
ptrdiff_t i = o - ci->u.l.base;
|
||||
return (0 <= i && i < (ci->top - ci->u.l.base) && ci->u.l.base + i == o);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Checks whether value 'o' came from an upvalue. (That can only happen
|
||||
** with instructions OP_GETTABUP/OP_SETTABUP, which operate directly on
|
||||
** upvalues.)
|
||||
*/
|
||||
static const char *getupvalname (CallInfo *ci, const TValue *o,
|
||||
const char **name) {
|
||||
LClosure *c = ci_func(ci);
|
||||
int i;
|
||||
for (i = 0; i < c->nupvalues; i++) {
|
||||
if (c->upvals[i]->v == o) {
|
||||
*name = upvalname(c->p, i);
|
||||
return "upvalue";
|
||||
}
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
static const char *varinfo (lua_State *L, const TValue *o) {
|
||||
const char *name = NULL; /* to avoid warnings */
|
||||
CallInfo *ci = L->ci;
|
||||
const char *kind = NULL;
|
||||
if (isLua(ci)) {
|
||||
kind = getupvalname(ci, o, &name); /* check whether 'o' is an upvalue */
|
||||
if (!kind && isinstack(ci, o)) /* no? try a register */
|
||||
kind = getobjname(ci_func(ci)->p, currentpc(ci),
|
||||
cast_int(o - ci->u.l.base), &name);
|
||||
}
|
||||
return (kind) ? luaO_pushfstring(L, " (%s '%s')", kind, name) : "";
|
||||
}
|
||||
|
||||
|
||||
l_noret luaG_typeerror (lua_State *L, const TValue *o, const char *op) {
|
||||
const char *t = objtypename(o);
|
||||
luaG_runerror(L, "attempt to %s a %s value%s", op, t, varinfo(L, o));
|
||||
}
|
||||
|
||||
|
||||
l_noret luaG_concaterror (lua_State *L, const TValue *p1, const TValue *p2) {
|
||||
if (ttisstring(p1) || cvt2str(p1)) p1 = p2;
|
||||
luaG_typeerror(L, p1, "concatenate");
|
||||
}
|
||||
|
||||
|
||||
l_noret luaG_opinterror (lua_State *L, const TValue *p1,
|
||||
const TValue *p2, const char *msg) {
|
||||
lua_Number temp;
|
||||
if (!tonumber(p1, &temp)) /* first operand is wrong? */
|
||||
p2 = p1; /* now second is wrong */
|
||||
luaG_typeerror(L, p2, msg);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Error when both values are convertible to numbers, but not to integers
|
||||
*/
|
||||
l_noret luaG_tointerror (lua_State *L, const TValue *p1, const TValue *p2) {
|
||||
lua_Integer temp;
|
||||
if (!tointeger(p1, &temp))
|
||||
p2 = p1;
|
||||
luaG_runerror(L, "number%s has no integer representation", varinfo(L, p2));
|
||||
}
|
||||
|
||||
|
||||
l_noret luaG_ordererror (lua_State *L, const TValue *p1, const TValue *p2) {
|
||||
const char *t1 = objtypename(p1);
|
||||
const char *t2 = objtypename(p2);
|
||||
if (t1 == t2)
|
||||
luaG_runerror(L, "attempt to compare two %s values", t1);
|
||||
else
|
||||
luaG_runerror(L, "attempt to compare %s with %s", t1, t2);
|
||||
}
|
||||
|
||||
|
||||
static void addinfo (lua_State *L, const char *msg) {
|
||||
CallInfo *ci = L->ci;
|
||||
if (isLua(ci)) { /* is Lua code? */
|
||||
char buff[LUA_IDSIZE]; /* add file:line information */
|
||||
int line = currentline(ci);
|
||||
TString *src = ci_func(ci)->p->source;
|
||||
if (src)
|
||||
luaO_chunkid(buff, getstr(src), LUA_IDSIZE);
|
||||
else { /* no source available; use "?" instead */
|
||||
buff[0] = '?'; buff[1] = '\0';
|
||||
}
|
||||
luaO_pushfstring(L, "%s:%d: %s", buff, line, msg);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
l_noret luaG_errormsg (lua_State *L) {
|
||||
if (L->errfunc != 0) { /* is there an error handling function? */
|
||||
StkId errfunc = restorestack(L, L->errfunc);
|
||||
setobjs2s(L, L->top, L->top - 1); /* move argument */
|
||||
setobjs2s(L, L->top - 1, errfunc); /* push function */
|
||||
L->top++; /* assume EXTRA_STACK */
|
||||
luaD_call(L, L->top - 2, 1, 0); /* call it */
|
||||
}
|
||||
luaD_throw(L, LUA_ERRRUN);
|
||||
}
|
||||
|
||||
|
||||
l_noret luaG_runerror (lua_State *L, const char *fmt, ...) {
|
||||
va_list argp;
|
||||
va_start(argp, fmt);
|
||||
addinfo(L, luaO_pushvfstring(L, fmt, argp));
|
||||
va_end(argp);
|
||||
luaG_errormsg(L);
|
||||
}
|
||||
|
||||
|
||||
void luaG_traceexec (lua_State *L) {
|
||||
CallInfo *ci = L->ci;
|
||||
lu_byte mask = L->hookmask;
|
||||
int counthook = ((mask & LUA_MASKCOUNT) && L->hookcount == 0);
|
||||
if (counthook)
|
||||
resethookcount(L); /* reset count */
|
||||
if (ci->callstatus & CIST_HOOKYIELD) { /* called hook last time? */
|
||||
ci->callstatus &= ~CIST_HOOKYIELD; /* erase mark */
|
||||
return; /* do not call hook again (VM yielded, so it did not move) */
|
||||
}
|
||||
if (counthook)
|
||||
luaD_hook(L, LUA_HOOKCOUNT, -1); /* call count hook */
|
||||
if (mask & LUA_MASKLINE) {
|
||||
Proto *p = ci_func(ci)->p;
|
||||
int npc = pcRel(ci->u.l.savedpc, p);
|
||||
int newline = getfuncline(p, npc);
|
||||
if (npc == 0 || /* call linehook when enter a new function, */
|
||||
ci->u.l.savedpc <= L->oldpc || /* when jump back (loop), or when */
|
||||
newline != getfuncline(p, pcRel(L->oldpc, p))) /* enter a new line */
|
||||
luaD_hook(L, LUA_HOOKLINE, newline); /* call line hook */
|
||||
}
|
||||
L->oldpc = ci->u.l.savedpc;
|
||||
if (L->status == LUA_YIELD) { /* did hook yield? */
|
||||
if (counthook)
|
||||
L->hookcount = 1; /* undo decrement to zero */
|
||||
ci->u.l.savedpc--; /* undo increment (resume will increment it again) */
|
||||
ci->callstatus |= CIST_HOOKYIELD; /* mark that it yielded */
|
||||
ci->func = L->top - 1; /* protect stack below results */
|
||||
luaD_throw(L, LUA_YIELD);
|
||||
}
|
||||
}
|
||||
|
||||
@ -0,0 +1,717 @@
|
||||
/*
|
||||
** $Id: ldo.c,v 2.135 2014/11/11 17:13:39 roberto Exp $
|
||||
** Stack and Call structure of Lua
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define ldo_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <setjmp.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lapi.h"
|
||||
#include "ldebug.h"
|
||||
#include "ldo.h"
|
||||
#include "lfunc.h"
|
||||
#include "lgc.h"
|
||||
#include "lmem.h"
|
||||
#include "lobject.h"
|
||||
#include "lopcodes.h"
|
||||
#include "lparser.h"
|
||||
#include "lstate.h"
|
||||
#include "lstring.h"
|
||||
#include "ltable.h"
|
||||
#include "ltm.h"
|
||||
#include "lundump.h"
|
||||
#include "lvm.h"
|
||||
#include "lzio.h"
|
||||
|
||||
|
||||
|
||||
#define errorstatus(s) ((s) > LUA_YIELD)
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Error-recovery functions
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
** LUAI_THROW/LUAI_TRY define how Lua does exception handling. By
|
||||
** default, Lua handles errors with exceptions when compiling as
|
||||
** C++ code, with _longjmp/_setjmp when asked to use them, and with
|
||||
** longjmp/setjmp otherwise.
|
||||
*/
|
||||
#if !defined(LUAI_THROW) /* { */
|
||||
|
||||
#if defined(__cplusplus) && !defined(LUA_USE_LONGJMP) /* { */
|
||||
|
||||
/* C++ exceptions */
|
||||
#define LUAI_THROW(L,c) throw(c)
|
||||
#define LUAI_TRY(L,c,a) \
|
||||
try { a } catch(...) { if ((c)->status == 0) (c)->status = -1; }
|
||||
#define luai_jmpbuf int /* dummy variable */
|
||||
|
||||
#elif defined(LUA_USE_POSIX) /* }{ */
|
||||
|
||||
/* in POSIX, try _longjmp/_setjmp (more efficient) */
|
||||
#define LUAI_THROW(L,c) _longjmp((c)->b, 1)
|
||||
#define LUAI_TRY(L,c,a) if (_setjmp((c)->b) == 0) { a }
|
||||
#define luai_jmpbuf jmp_buf
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
/* ISO C handling with long jumps */
|
||||
#define LUAI_THROW(L,c) longjmp((c)->b, 1)
|
||||
#define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a }
|
||||
#define luai_jmpbuf jmp_buf
|
||||
|
||||
#endif /* } */
|
||||
|
||||
#endif /* } */
|
||||
|
||||
|
||||
|
||||
/* chain list of long jump buffers */
|
||||
struct lua_longjmp {
|
||||
struct lua_longjmp *previous;
|
||||
luai_jmpbuf b;
|
||||
volatile int status; /* error code */
|
||||
};
|
||||
|
||||
|
||||
static void seterrorobj (lua_State *L, int errcode, StkId oldtop) {
|
||||
switch (errcode) {
|
||||
case LUA_ERRMEM: { /* memory error? */
|
||||
setsvalue2s(L, oldtop, G(L)->memerrmsg); /* reuse preregistered msg. */
|
||||
break;
|
||||
}
|
||||
case LUA_ERRERR: {
|
||||
setsvalue2s(L, oldtop, luaS_newliteral(L, "error in error handling"));
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
setobjs2s(L, oldtop, L->top - 1); /* error message on current top */
|
||||
break;
|
||||
}
|
||||
}
|
||||
L->top = oldtop + 1;
|
||||
}
|
||||
|
||||
|
||||
l_noret luaD_throw (lua_State *L, int errcode) {
|
||||
if (L->errorJmp) { /* thread has an error handler? */
|
||||
L->errorJmp->status = errcode; /* set status */
|
||||
LUAI_THROW(L, L->errorJmp); /* jump to it */
|
||||
}
|
||||
else { /* thread has no error handler */
|
||||
global_State *g = G(L);
|
||||
L->status = cast_byte(errcode); /* mark it as dead */
|
||||
if (g->mainthread->errorJmp) { /* main thread has a handler? */
|
||||
setobjs2s(L, g->mainthread->top++, L->top - 1); /* copy error obj. */
|
||||
luaD_throw(g->mainthread, errcode); /* re-throw in main thread */
|
||||
}
|
||||
else { /* no handler at all; abort */
|
||||
if (g->panic) { /* panic function? */
|
||||
seterrorobj(L, errcode, L->top); /* assume EXTRA_STACK */
|
||||
if (L->ci->top < L->top)
|
||||
L->ci->top = L->top; /* pushing msg. can break this invariant */
|
||||
lua_unlock(L);
|
||||
g->panic(L); /* call panic function (last chance to jump out) */
|
||||
}
|
||||
abort();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) {
|
||||
unsigned short oldnCcalls = L->nCcalls;
|
||||
struct lua_longjmp lj;
|
||||
lj.status = LUA_OK;
|
||||
lj.previous = L->errorJmp; /* chain new error handler */
|
||||
L->errorJmp = &lj;
|
||||
LUAI_TRY(L, &lj,
|
||||
(*f)(L, ud);
|
||||
);
|
||||
L->errorJmp = lj.previous; /* restore old error handler */
|
||||
L->nCcalls = oldnCcalls;
|
||||
return lj.status;
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
static void correctstack (lua_State *L, TValue *oldstack) {
|
||||
CallInfo *ci;
|
||||
UpVal *up;
|
||||
L->top = (L->top - oldstack) + L->stack;
|
||||
for (up = L->openupval; up != NULL; up = up->u.open.next)
|
||||
up->v = (up->v - oldstack) + L->stack;
|
||||
for (ci = L->ci; ci != NULL; ci = ci->previous) {
|
||||
ci->top = (ci->top - oldstack) + L->stack;
|
||||
ci->func = (ci->func - oldstack) + L->stack;
|
||||
if (isLua(ci))
|
||||
ci->u.l.base = (ci->u.l.base - oldstack) + L->stack;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* some space for error handling */
|
||||
#define ERRORSTACKSIZE (LUAI_MAXSTACK + 200)
|
||||
|
||||
|
||||
void luaD_reallocstack (lua_State *L, int newsize) {
|
||||
TValue *oldstack = L->stack;
|
||||
int lim = L->stacksize;
|
||||
lua_assert(newsize <= LUAI_MAXSTACK || newsize == ERRORSTACKSIZE);
|
||||
lua_assert(L->stack_last - L->stack == L->stacksize - EXTRA_STACK);
|
||||
luaM_reallocvector(L, L->stack, L->stacksize, newsize, TValue);
|
||||
for (; lim < newsize; lim++)
|
||||
setnilvalue(L->stack + lim); /* erase new segment */
|
||||
L->stacksize = newsize;
|
||||
L->stack_last = L->stack + newsize - EXTRA_STACK;
|
||||
correctstack(L, oldstack);
|
||||
}
|
||||
|
||||
|
||||
void luaD_growstack (lua_State *L, int n) {
|
||||
int size = L->stacksize;
|
||||
if (size > LUAI_MAXSTACK) /* error after extra size? */
|
||||
luaD_throw(L, LUA_ERRERR);
|
||||
else {
|
||||
int needed = cast_int(L->top - L->stack) + n + EXTRA_STACK;
|
||||
int newsize = 2 * size;
|
||||
if (newsize > LUAI_MAXSTACK) newsize = LUAI_MAXSTACK;
|
||||
if (newsize < needed) newsize = needed;
|
||||
if (newsize > LUAI_MAXSTACK) { /* stack overflow? */
|
||||
luaD_reallocstack(L, ERRORSTACKSIZE);
|
||||
luaG_runerror(L, "stack overflow");
|
||||
}
|
||||
else
|
||||
luaD_reallocstack(L, newsize);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int stackinuse (lua_State *L) {
|
||||
CallInfo *ci;
|
||||
StkId lim = L->top;
|
||||
for (ci = L->ci; ci != NULL; ci = ci->previous) {
|
||||
lua_assert(ci->top <= L->stack_last);
|
||||
if (lim < ci->top) lim = ci->top;
|
||||
}
|
||||
return cast_int(lim - L->stack) + 1; /* part of stack in use */
|
||||
}
|
||||
|
||||
|
||||
void luaD_shrinkstack (lua_State *L) {
|
||||
int inuse = stackinuse(L);
|
||||
int goodsize = inuse + (inuse / 8) + 2*EXTRA_STACK;
|
||||
if (goodsize > LUAI_MAXSTACK) goodsize = LUAI_MAXSTACK;
|
||||
if (L->stacksize > LUAI_MAXSTACK) /* was handling stack overflow? */
|
||||
luaE_freeCI(L); /* free all CIs (list grew because of an error) */
|
||||
else
|
||||
luaE_shrinkCI(L); /* shrink list */
|
||||
if (inuse > LUAI_MAXSTACK || /* still handling stack overflow? */
|
||||
goodsize >= L->stacksize) /* would grow instead of shrink? */
|
||||
condmovestack(L); /* don't change stack (change only for debugging) */
|
||||
else
|
||||
luaD_reallocstack(L, goodsize); /* shrink it */
|
||||
}
|
||||
|
||||
|
||||
void luaD_hook (lua_State *L, int event, int line) {
|
||||
lua_Hook hook = L->hook;
|
||||
if (hook && L->allowhook) {
|
||||
CallInfo *ci = L->ci;
|
||||
ptrdiff_t top = savestack(L, L->top);
|
||||
ptrdiff_t ci_top = savestack(L, ci->top);
|
||||
lua_Debug ar;
|
||||
ar.event = event;
|
||||
ar.currentline = line;
|
||||
ar.i_ci = ci;
|
||||
luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */
|
||||
ci->top = L->top + LUA_MINSTACK;
|
||||
lua_assert(ci->top <= L->stack_last);
|
||||
L->allowhook = 0; /* cannot call hooks inside a hook */
|
||||
ci->callstatus |= CIST_HOOKED;
|
||||
lua_unlock(L);
|
||||
(*hook)(L, &ar);
|
||||
lua_lock(L);
|
||||
lua_assert(!L->allowhook);
|
||||
L->allowhook = 1;
|
||||
ci->top = restorestack(L, ci_top);
|
||||
L->top = restorestack(L, top);
|
||||
ci->callstatus &= ~CIST_HOOKED;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void callhook (lua_State *L, CallInfo *ci) {
|
||||
int hook = LUA_HOOKCALL;
|
||||
ci->u.l.savedpc++; /* hooks assume 'pc' is already incremented */
|
||||
if (isLua(ci->previous) &&
|
||||
GET_OPCODE(*(ci->previous->u.l.savedpc - 1)) == OP_TAILCALL) {
|
||||
ci->callstatus |= CIST_TAIL;
|
||||
hook = LUA_HOOKTAILCALL;
|
||||
}
|
||||
luaD_hook(L, hook, -1);
|
||||
ci->u.l.savedpc--; /* correct 'pc' */
|
||||
}
|
||||
|
||||
|
||||
static StkId adjust_varargs (lua_State *L, Proto *p, int actual) {
|
||||
int i;
|
||||
int nfixargs = p->numparams;
|
||||
StkId base, fixed;
|
||||
lua_assert(actual >= nfixargs);
|
||||
/* move fixed parameters to final position */
|
||||
luaD_checkstack(L, p->maxstacksize); /* check again for new 'base' */
|
||||
fixed = L->top - actual; /* first fixed argument */
|
||||
base = L->top; /* final position of first argument */
|
||||
for (i=0; i<nfixargs; i++) {
|
||||
setobjs2s(L, L->top++, fixed + i);
|
||||
setnilvalue(fixed + i);
|
||||
}
|
||||
return base;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Check whether __call metafield of 'func' is a function. If so, put
|
||||
** it in stack below original 'func' so that 'luaD_precall' can call
|
||||
** it. Raise an error if __call metafield is not a function.
|
||||
*/
|
||||
static void tryfuncTM (lua_State *L, StkId func) {
|
||||
const TValue *tm = luaT_gettmbyobj(L, func, TM_CALL);
|
||||
StkId p;
|
||||
if (!ttisfunction(tm))
|
||||
luaG_typeerror(L, func, "call");
|
||||
/* Open a hole inside the stack at 'func' */
|
||||
for (p = L->top; p > func; p--)
|
||||
setobjs2s(L, p, p-1);
|
||||
L->top++; /* slot ensured by caller */
|
||||
setobj2s(L, func, tm); /* tag method is the new function to be called */
|
||||
}
|
||||
|
||||
|
||||
|
||||
#define next_ci(L) (L->ci = (L->ci->next ? L->ci->next : luaE_extendCI(L)))
|
||||
|
||||
|
||||
/*
|
||||
** returns true if function has been executed (C function)
|
||||
*/
|
||||
int luaD_precall (lua_State *L, StkId func, int nresults) {
|
||||
lua_CFunction f;
|
||||
CallInfo *ci;
|
||||
int n; /* number of arguments (Lua) or returns (C) */
|
||||
ptrdiff_t funcr = savestack(L, func);
|
||||
switch (ttype(func)) {
|
||||
case LUA_TLCF: /* light C function */
|
||||
f = fvalue(func);
|
||||
goto Cfunc;
|
||||
case LUA_TCCL: { /* C closure */
|
||||
f = clCvalue(func)->f;
|
||||
Cfunc:
|
||||
luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */
|
||||
ci = next_ci(L); /* now 'enter' new function */
|
||||
ci->nresults = nresults;
|
||||
ci->func = restorestack(L, funcr);
|
||||
ci->top = L->top + LUA_MINSTACK;
|
||||
lua_assert(ci->top <= L->stack_last);
|
||||
ci->callstatus = 0;
|
||||
luaC_checkGC(L); /* stack grow uses memory */
|
||||
if (L->hookmask & LUA_MASKCALL)
|
||||
luaD_hook(L, LUA_HOOKCALL, -1);
|
||||
lua_unlock(L);
|
||||
n = (*f)(L); /* do the actual call */
|
||||
lua_lock(L);
|
||||
api_checknelems(L, n);
|
||||
luaD_poscall(L, L->top - n);
|
||||
return 1;
|
||||
}
|
||||
case LUA_TLCL: { /* Lua function: prepare its call */
|
||||
StkId base;
|
||||
Proto *p = clLvalue(func)->p;
|
||||
n = cast_int(L->top - func) - 1; /* number of real arguments */
|
||||
luaD_checkstack(L, p->maxstacksize);
|
||||
for (; n < p->numparams; n++)
|
||||
setnilvalue(L->top++); /* complete missing arguments */
|
||||
if (!p->is_vararg) {
|
||||
func = restorestack(L, funcr);
|
||||
base = func + 1;
|
||||
}
|
||||
else {
|
||||
base = adjust_varargs(L, p, n);
|
||||
func = restorestack(L, funcr); /* previous call can change stack */
|
||||
}
|
||||
ci = next_ci(L); /* now 'enter' new function */
|
||||
ci->nresults = nresults;
|
||||
ci->func = func;
|
||||
ci->u.l.base = base;
|
||||
ci->top = base + p->maxstacksize;
|
||||
lua_assert(ci->top <= L->stack_last);
|
||||
ci->u.l.savedpc = p->code; /* starting point */
|
||||
ci->callstatus = CIST_LUA;
|
||||
L->top = ci->top;
|
||||
luaC_checkGC(L); /* stack grow uses memory */
|
||||
if (L->hookmask & LUA_MASKCALL)
|
||||
callhook(L, ci);
|
||||
return 0;
|
||||
}
|
||||
default: { /* not a function */
|
||||
luaD_checkstack(L, 1); /* ensure space for metamethod */
|
||||
func = restorestack(L, funcr); /* previous call may change stack */
|
||||
tryfuncTM(L, func); /* try to get '__call' metamethod */
|
||||
return luaD_precall(L, func, nresults); /* now it must be a function */
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int luaD_poscall (lua_State *L, StkId firstResult) {
|
||||
StkId res;
|
||||
int wanted, i;
|
||||
CallInfo *ci = L->ci;
|
||||
if (L->hookmask & (LUA_MASKRET | LUA_MASKLINE)) {
|
||||
if (L->hookmask & LUA_MASKRET) {
|
||||
ptrdiff_t fr = savestack(L, firstResult); /* hook may change stack */
|
||||
luaD_hook(L, LUA_HOOKRET, -1);
|
||||
firstResult = restorestack(L, fr);
|
||||
}
|
||||
L->oldpc = ci->previous->u.l.savedpc; /* 'oldpc' for caller function */
|
||||
}
|
||||
res = ci->func; /* res == final position of 1st result */
|
||||
wanted = ci->nresults;
|
||||
L->ci = ci = ci->previous; /* back to caller */
|
||||
/* move results to correct place */
|
||||
for (i = wanted; i != 0 && firstResult < L->top; i--)
|
||||
setobjs2s(L, res++, firstResult++);
|
||||
while (i-- > 0)
|
||||
setnilvalue(res++);
|
||||
L->top = res;
|
||||
return (wanted - LUA_MULTRET); /* 0 iff wanted == LUA_MULTRET */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Call a function (C or Lua). The function to be called is at *func.
|
||||
** The arguments are on the stack, right after the function.
|
||||
** When returns, all the results are on the stack, starting at the original
|
||||
** function position.
|
||||
*/
|
||||
void luaD_call (lua_State *L, StkId func, int nResults, int allowyield) {
|
||||
if (++L->nCcalls >= LUAI_MAXCCALLS) {
|
||||
if (L->nCcalls == LUAI_MAXCCALLS)
|
||||
luaG_runerror(L, "C stack overflow");
|
||||
else if (L->nCcalls >= (LUAI_MAXCCALLS + (LUAI_MAXCCALLS>>3)))
|
||||
luaD_throw(L, LUA_ERRERR); /* error while handing stack error */
|
||||
}
|
||||
if (!allowyield) L->nny++;
|
||||
if (!luaD_precall(L, func, nResults)) /* is a Lua function? */
|
||||
luaV_execute(L); /* call it */
|
||||
if (!allowyield) L->nny--;
|
||||
L->nCcalls--;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Completes the execution of an interrupted C function, calling its
|
||||
** continuation function.
|
||||
*/
|
||||
static void finishCcall (lua_State *L, int status) {
|
||||
CallInfo *ci = L->ci;
|
||||
int n;
|
||||
/* must have a continuation and must be able to call it */
|
||||
lua_assert(ci->u.c.k != NULL && L->nny == 0);
|
||||
/* error status can only happen in a protected call */
|
||||
lua_assert((ci->callstatus & CIST_YPCALL) || status == LUA_YIELD);
|
||||
if (ci->callstatus & CIST_YPCALL) { /* was inside a pcall? */
|
||||
ci->callstatus &= ~CIST_YPCALL; /* finish 'lua_pcall' */
|
||||
L->errfunc = ci->u.c.old_errfunc;
|
||||
}
|
||||
/* finish 'lua_callk'/'lua_pcall'; CIST_YPCALL and 'errfunc' already
|
||||
handled */
|
||||
adjustresults(L, ci->nresults);
|
||||
/* call continuation function */
|
||||
lua_unlock(L);
|
||||
n = (*ci->u.c.k)(L, status, ci->u.c.ctx);
|
||||
lua_lock(L);
|
||||
api_checknelems(L, n);
|
||||
/* finish 'luaD_precall' */
|
||||
luaD_poscall(L, L->top - n);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Executes "full continuation" (everything in the stack) of a
|
||||
** previously interrupted coroutine until the stack is empty (or another
|
||||
** interruption long-jumps out of the loop). If the coroutine is
|
||||
** recovering from an error, 'ud' points to the error status, which must
|
||||
** be passed to the first continuation function (otherwise the default
|
||||
** status is LUA_YIELD).
|
||||
*/
|
||||
static void unroll (lua_State *L, void *ud) {
|
||||
if (ud != NULL) /* error status? */
|
||||
finishCcall(L, *(int *)ud); /* finish 'lua_pcallk' callee */
|
||||
while (L->ci != &L->base_ci) { /* something in the stack */
|
||||
if (!isLua(L->ci)) /* C function? */
|
||||
finishCcall(L, LUA_YIELD); /* complete its execution */
|
||||
else { /* Lua function */
|
||||
luaV_finishOp(L); /* finish interrupted instruction */
|
||||
luaV_execute(L); /* execute down to higher C 'boundary' */
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Try to find a suspended protected call (a "recover point") for the
|
||||
** given thread.
|
||||
*/
|
||||
static CallInfo *findpcall (lua_State *L) {
|
||||
CallInfo *ci;
|
||||
for (ci = L->ci; ci != NULL; ci = ci->previous) { /* search for a pcall */
|
||||
if (ci->callstatus & CIST_YPCALL)
|
||||
return ci;
|
||||
}
|
||||
return NULL; /* no pending pcall */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Recovers from an error in a coroutine. Finds a recover point (if
|
||||
** there is one) and completes the execution of the interrupted
|
||||
** 'luaD_pcall'. If there is no recover point, returns zero.
|
||||
*/
|
||||
static int recover (lua_State *L, int status) {
|
||||
StkId oldtop;
|
||||
CallInfo *ci = findpcall(L);
|
||||
if (ci == NULL) return 0; /* no recovery point */
|
||||
/* "finish" luaD_pcall */
|
||||
oldtop = restorestack(L, ci->extra);
|
||||
luaF_close(L, oldtop);
|
||||
seterrorobj(L, status, oldtop);
|
||||
L->ci = ci;
|
||||
L->allowhook = getoah(ci->callstatus); /* restore original 'allowhook' */
|
||||
L->nny = 0; /* should be zero to be yieldable */
|
||||
luaD_shrinkstack(L);
|
||||
L->errfunc = ci->u.c.old_errfunc;
|
||||
return 1; /* continue running the coroutine */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** signal an error in the call to 'resume', not in the execution of the
|
||||
** coroutine itself. (Such errors should not be handled by any coroutine
|
||||
** error handler and should not kill the coroutine.)
|
||||
*/
|
||||
static l_noret resume_error (lua_State *L, const char *msg, StkId firstArg) {
|
||||
L->top = firstArg; /* remove args from the stack */
|
||||
setsvalue2s(L, L->top, luaS_new(L, msg)); /* push error message */
|
||||
api_incr_top(L);
|
||||
luaD_throw(L, -1); /* jump back to 'lua_resume' */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Do the work for 'lua_resume' in protected mode. Most of the work
|
||||
** depends on the status of the coroutine: initial state, suspended
|
||||
** inside a hook, or regularly suspended (optionally with a continuation
|
||||
** function), plus erroneous cases: non-suspended coroutine or dead
|
||||
** coroutine.
|
||||
*/
|
||||
static void resume (lua_State *L, void *ud) {
|
||||
int nCcalls = L->nCcalls;
|
||||
StkId firstArg = cast(StkId, ud);
|
||||
CallInfo *ci = L->ci;
|
||||
if (nCcalls >= LUAI_MAXCCALLS)
|
||||
resume_error(L, "C stack overflow", firstArg);
|
||||
if (L->status == LUA_OK) { /* may be starting a coroutine */
|
||||
if (ci != &L->base_ci) /* not in base level? */
|
||||
resume_error(L, "cannot resume non-suspended coroutine", firstArg);
|
||||
/* coroutine is in base level; start running it */
|
||||
if (!luaD_precall(L, firstArg - 1, LUA_MULTRET)) /* Lua function? */
|
||||
luaV_execute(L); /* call it */
|
||||
}
|
||||
else if (L->status != LUA_YIELD)
|
||||
resume_error(L, "cannot resume dead coroutine", firstArg);
|
||||
else { /* resuming from previous yield */
|
||||
L->status = LUA_OK; /* mark that it is running (again) */
|
||||
ci->func = restorestack(L, ci->extra);
|
||||
if (isLua(ci)) /* yielded inside a hook? */
|
||||
luaV_execute(L); /* just continue running Lua code */
|
||||
else { /* 'common' yield */
|
||||
if (ci->u.c.k != NULL) { /* does it have a continuation function? */
|
||||
int n;
|
||||
lua_unlock(L);
|
||||
n = (*ci->u.c.k)(L, LUA_YIELD, ci->u.c.ctx); /* call continuation */
|
||||
lua_lock(L);
|
||||
api_checknelems(L, n);
|
||||
firstArg = L->top - n; /* yield results come from continuation */
|
||||
}
|
||||
luaD_poscall(L, firstArg); /* finish 'luaD_precall' */
|
||||
}
|
||||
unroll(L, NULL); /* run continuation */
|
||||
}
|
||||
lua_assert(nCcalls == L->nCcalls);
|
||||
}
|
||||
|
||||
|
||||
LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs) {
|
||||
int status;
|
||||
int oldnny = L->nny; /* save "number of non-yieldable" calls */
|
||||
lua_lock(L);
|
||||
luai_userstateresume(L, nargs);
|
||||
L->nCcalls = (from) ? from->nCcalls + 1 : 1;
|
||||
L->nny = 0; /* allow yields */
|
||||
api_checknelems(L, (L->status == LUA_OK) ? nargs + 1 : nargs);
|
||||
status = luaD_rawrunprotected(L, resume, L->top - nargs);
|
||||
if (status == -1) /* error calling 'lua_resume'? */
|
||||
status = LUA_ERRRUN;
|
||||
else { /* continue running after recoverable errors */
|
||||
while (errorstatus(status) && recover(L, status)) {
|
||||
/* unroll continuation */
|
||||
status = luaD_rawrunprotected(L, unroll, &status);
|
||||
}
|
||||
if (errorstatus(status)) { /* unrecoverable error? */
|
||||
L->status = cast_byte(status); /* mark thread as 'dead' */
|
||||
seterrorobj(L, status, L->top); /* push error message */
|
||||
L->ci->top = L->top;
|
||||
}
|
||||
else lua_assert(status == L->status); /* normal end or yield */
|
||||
}
|
||||
L->nny = oldnny; /* restore 'nny' */
|
||||
L->nCcalls--;
|
||||
lua_assert(L->nCcalls == ((from) ? from->nCcalls : 0));
|
||||
lua_unlock(L);
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
LUA_API int lua_isyieldable (lua_State *L) {
|
||||
return (L->nny == 0);
|
||||
}
|
||||
|
||||
|
||||
LUA_API int lua_yieldk (lua_State *L, int nresults, lua_KContext ctx,
|
||||
lua_KFunction k) {
|
||||
CallInfo *ci = L->ci;
|
||||
luai_userstateyield(L, nresults);
|
||||
lua_lock(L);
|
||||
api_checknelems(L, nresults);
|
||||
if (L->nny > 0) {
|
||||
if (L != G(L)->mainthread)
|
||||
luaG_runerror(L, "attempt to yield across a C-call boundary");
|
||||
else
|
||||
luaG_runerror(L, "attempt to yield from outside a coroutine");
|
||||
}
|
||||
L->status = LUA_YIELD;
|
||||
ci->extra = savestack(L, ci->func); /* save current 'func' */
|
||||
if (isLua(ci)) { /* inside a hook? */
|
||||
api_check(k == NULL, "hooks cannot continue after yielding");
|
||||
}
|
||||
else {
|
||||
if ((ci->u.c.k = k) != NULL) /* is there a continuation? */
|
||||
ci->u.c.ctx = ctx; /* save context */
|
||||
ci->func = L->top - nresults - 1; /* protect stack below results */
|
||||
luaD_throw(L, LUA_YIELD);
|
||||
}
|
||||
lua_assert(ci->callstatus & CIST_HOOKED); /* must be inside a hook */
|
||||
lua_unlock(L);
|
||||
return 0; /* return to 'luaD_hook' */
|
||||
}
|
||||
|
||||
|
||||
int luaD_pcall (lua_State *L, Pfunc func, void *u,
|
||||
ptrdiff_t old_top, ptrdiff_t ef) {
|
||||
int status;
|
||||
CallInfo *old_ci = L->ci;
|
||||
lu_byte old_allowhooks = L->allowhook;
|
||||
unsigned short old_nny = L->nny;
|
||||
ptrdiff_t old_errfunc = L->errfunc;
|
||||
L->errfunc = ef;
|
||||
status = luaD_rawrunprotected(L, func, u);
|
||||
if (status != LUA_OK) { /* an error occurred? */
|
||||
StkId oldtop = restorestack(L, old_top);
|
||||
luaF_close(L, oldtop); /* close possible pending closures */
|
||||
seterrorobj(L, status, oldtop);
|
||||
L->ci = old_ci;
|
||||
L->allowhook = old_allowhooks;
|
||||
L->nny = old_nny;
|
||||
luaD_shrinkstack(L);
|
||||
}
|
||||
L->errfunc = old_errfunc;
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** Execute a protected parser.
|
||||
*/
|
||||
struct SParser { /* data to 'f_parser' */
|
||||
ZIO *z;
|
||||
Mbuffer buff; /* dynamic structure used by the scanner */
|
||||
Dyndata dyd; /* dynamic structures used by the parser */
|
||||
const char *mode;
|
||||
const char *name;
|
||||
};
|
||||
|
||||
|
||||
static void checkmode (lua_State *L, const char *mode, const char *x) {
|
||||
if (mode && strchr(mode, x[0]) == NULL) {
|
||||
luaO_pushfstring(L,
|
||||
"attempt to load a %s chunk (mode is '%s')", x, mode);
|
||||
luaD_throw(L, LUA_ERRSYNTAX);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void f_parser (lua_State *L, void *ud) {
|
||||
LClosure *cl;
|
||||
struct SParser *p = cast(struct SParser *, ud);
|
||||
int c = zgetc(p->z); /* read first character */
|
||||
if (c == LUA_SIGNATURE[0]) {
|
||||
checkmode(L, p->mode, "binary");
|
||||
cl = luaU_undump(L, p->z, &p->buff, p->name);
|
||||
}
|
||||
else {
|
||||
checkmode(L, p->mode, "text");
|
||||
cl = luaY_parser(L, p->z, &p->buff, &p->dyd, p->name, c);
|
||||
}
|
||||
lua_assert(cl->nupvalues == cl->p->sizeupvalues);
|
||||
luaF_initupvals(L, cl);
|
||||
}
|
||||
|
||||
|
||||
int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
|
||||
const char *mode) {
|
||||
struct SParser p;
|
||||
int status;
|
||||
L->nny++; /* cannot yield during parsing */
|
||||
p.z = z; p.name = name; p.mode = mode;
|
||||
p.dyd.actvar.arr = NULL; p.dyd.actvar.size = 0;
|
||||
p.dyd.gt.arr = NULL; p.dyd.gt.size = 0;
|
||||
p.dyd.label.arr = NULL; p.dyd.label.size = 0;
|
||||
luaZ_initbuffer(L, &p.buff);
|
||||
status = luaD_pcall(L, f_parser, &p, savestack(L, L->top), L->errfunc);
|
||||
luaZ_freebuffer(L, &p.buff);
|
||||
luaM_freearray(L, p.dyd.actvar.arr, p.dyd.actvar.size);
|
||||
luaM_freearray(L, p.dyd.gt.arr, p.dyd.gt.size);
|
||||
luaM_freearray(L, p.dyd.label.arr, p.dyd.label.size);
|
||||
L->nny--;
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
@ -0,0 +1,214 @@
|
||||
/*
|
||||
** $Id: ldump.c,v 2.34 2014/11/02 19:19:04 roberto Exp $
|
||||
** save precompiled Lua chunks
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define ldump_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <stddef.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lobject.h"
|
||||
#include "lstate.h"
|
||||
#include "lundump.h"
|
||||
|
||||
|
||||
typedef struct {
|
||||
lua_State *L;
|
||||
lua_Writer writer;
|
||||
void *data;
|
||||
int strip;
|
||||
int status;
|
||||
} DumpState;
|
||||
|
||||
|
||||
/*
|
||||
** All high-level dumps go through DumpVector; you can change it to
|
||||
** change the endianness of the result
|
||||
*/
|
||||
#define DumpVector(v,n,D) DumpBlock(v,(n)*sizeof((v)[0]),D)
|
||||
|
||||
#define DumpLiteral(s,D) DumpBlock(s, sizeof(s) - sizeof(char), D)
|
||||
|
||||
|
||||
static void DumpBlock (const void *b, size_t size, DumpState *D) {
|
||||
if (D->status == 0) {
|
||||
lua_unlock(D->L);
|
||||
D->status = (*D->writer)(D->L, b, size, D->data);
|
||||
lua_lock(D->L);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#define DumpVar(x,D) DumpVector(&x,1,D)
|
||||
|
||||
|
||||
static void DumpByte (int y, DumpState *D) {
|
||||
lu_byte x = (lu_byte)y;
|
||||
DumpVar(x, D);
|
||||
}
|
||||
|
||||
|
||||
static void DumpInt (int x, DumpState *D) {
|
||||
DumpVar(x, D);
|
||||
}
|
||||
|
||||
|
||||
static void DumpNumber (lua_Number x, DumpState *D) {
|
||||
DumpVar(x, D);
|
||||
}
|
||||
|
||||
|
||||
static void DumpInteger (lua_Integer x, DumpState *D) {
|
||||
DumpVar(x, D);
|
||||
}
|
||||
|
||||
|
||||
static void DumpString (const TString *s, DumpState *D) {
|
||||
if (s == NULL)
|
||||
DumpByte(0, D);
|
||||
else {
|
||||
size_t size = s->len + 1; /* include trailing '\0' */
|
||||
if (size < 0xFF)
|
||||
DumpByte(cast_int(size), D);
|
||||
else {
|
||||
DumpByte(0xFF, D);
|
||||
DumpVar(size, D);
|
||||
}
|
||||
DumpVector(getstr(s), size - 1, D); /* no need to save '\0' */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void DumpCode (const Proto *f, DumpState *D) {
|
||||
DumpInt(f->sizecode, D);
|
||||
DumpVector(f->code, f->sizecode, D);
|
||||
}
|
||||
|
||||
|
||||
static void DumpFunction(const Proto *f, TString *psource, DumpState *D);
|
||||
|
||||
static void DumpConstants (const Proto *f, DumpState *D) {
|
||||
int i;
|
||||
int n = f->sizek;
|
||||
DumpInt(n, D);
|
||||
for (i = 0; i < n; i++) {
|
||||
const TValue *o = &f->k[i];
|
||||
DumpByte(ttype(o), D);
|
||||
switch (ttype(o)) {
|
||||
case LUA_TNIL:
|
||||
break;
|
||||
case LUA_TBOOLEAN:
|
||||
DumpByte(bvalue(o), D);
|
||||
break;
|
||||
case LUA_TNUMFLT:
|
||||
DumpNumber(fltvalue(o), D);
|
||||
break;
|
||||
case LUA_TNUMINT:
|
||||
DumpInteger(ivalue(o), D);
|
||||
break;
|
||||
case LUA_TSHRSTR:
|
||||
case LUA_TLNGSTR:
|
||||
DumpString(tsvalue(o), D);
|
||||
break;
|
||||
default:
|
||||
lua_assert(0);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void DumpProtos (const Proto *f, DumpState *D) {
|
||||
int i;
|
||||
int n = f->sizep;
|
||||
DumpInt(n, D);
|
||||
for (i = 0; i < n; i++)
|
||||
DumpFunction(f->p[i], f->source, D);
|
||||
}
|
||||
|
||||
|
||||
static void DumpUpvalues (const Proto *f, DumpState *D) {
|
||||
int i, n = f->sizeupvalues;
|
||||
DumpInt(n, D);
|
||||
for (i = 0; i < n; i++) {
|
||||
DumpByte(f->upvalues[i].instack, D);
|
||||
DumpByte(f->upvalues[i].idx, D);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void DumpDebug (const Proto *f, DumpState *D) {
|
||||
int i, n;
|
||||
n = (D->strip) ? 0 : f->sizelineinfo;
|
||||
DumpInt(n, D);
|
||||
DumpVector(f->lineinfo, n, D);
|
||||
n = (D->strip) ? 0 : f->sizelocvars;
|
||||
DumpInt(n, D);
|
||||
for (i = 0; i < n; i++) {
|
||||
DumpString(f->locvars[i].varname, D);
|
||||
DumpInt(f->locvars[i].startpc, D);
|
||||
DumpInt(f->locvars[i].endpc, D);
|
||||
}
|
||||
n = (D->strip) ? 0 : f->sizeupvalues;
|
||||
DumpInt(n, D);
|
||||
for (i = 0; i < n; i++)
|
||||
DumpString(f->upvalues[i].name, D);
|
||||
}
|
||||
|
||||
|
||||
static void DumpFunction (const Proto *f, TString *psource, DumpState *D) {
|
||||
if (D->strip || f->source == psource)
|
||||
DumpString(NULL, D); /* no debug info or same source as its parent */
|
||||
else
|
||||
DumpString(f->source, D);
|
||||
DumpInt(f->linedefined, D);
|
||||
DumpInt(f->lastlinedefined, D);
|
||||
DumpByte(f->numparams, D);
|
||||
DumpByte(f->is_vararg, D);
|
||||
DumpByte(f->maxstacksize, D);
|
||||
DumpCode(f, D);
|
||||
DumpConstants(f, D);
|
||||
DumpUpvalues(f, D);
|
||||
DumpProtos(f, D);
|
||||
DumpDebug(f, D);
|
||||
}
|
||||
|
||||
|
||||
static void DumpHeader (DumpState *D) {
|
||||
DumpLiteral(LUA_SIGNATURE, D);
|
||||
DumpByte(LUAC_VERSION, D);
|
||||
DumpByte(LUAC_FORMAT, D);
|
||||
DumpLiteral(LUAC_DATA, D);
|
||||
DumpByte(sizeof(int), D);
|
||||
DumpByte(sizeof(size_t), D);
|
||||
DumpByte(sizeof(Instruction), D);
|
||||
DumpByte(sizeof(lua_Integer), D);
|
||||
DumpByte(sizeof(lua_Number), D);
|
||||
DumpInteger(LUAC_INT, D);
|
||||
DumpNumber(LUAC_NUM, D);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** dump Lua function as precompiled chunk
|
||||
*/
|
||||
int luaU_dump(lua_State *L, const Proto *f, lua_Writer w, void *data,
|
||||
int strip) {
|
||||
DumpState D;
|
||||
D.L = L;
|
||||
D.writer = w;
|
||||
D.data = data;
|
||||
D.strip = strip;
|
||||
D.status = 0;
|
||||
DumpHeader(&D);
|
||||
DumpByte(f->sizeupvalues, &D);
|
||||
DumpFunction(f, NULL, &D);
|
||||
return D.status;
|
||||
}
|
||||
|
||||
@ -0,0 +1,151 @@
|
||||
/*
|
||||
** $Id: lfunc.c,v 2.45 2014/11/02 19:19:04 roberto Exp $
|
||||
** Auxiliary functions to manipulate prototypes and closures
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lfunc_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <stddef.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lfunc.h"
|
||||
#include "lgc.h"
|
||||
#include "lmem.h"
|
||||
#include "lobject.h"
|
||||
#include "lstate.h"
|
||||
|
||||
|
||||
|
||||
CClosure *luaF_newCclosure (lua_State *L, int n) {
|
||||
GCObject *o = luaC_newobj(L, LUA_TCCL, sizeCclosure(n));
|
||||
CClosure *c = gco2ccl(o);
|
||||
c->nupvalues = cast_byte(n);
|
||||
return c;
|
||||
}
|
||||
|
||||
|
||||
LClosure *luaF_newLclosure (lua_State *L, int n) {
|
||||
GCObject *o = luaC_newobj(L, LUA_TLCL, sizeLclosure(n));
|
||||
LClosure *c = gco2lcl(o);
|
||||
c->p = NULL;
|
||||
c->nupvalues = cast_byte(n);
|
||||
while (n--) c->upvals[n] = NULL;
|
||||
return c;
|
||||
}
|
||||
|
||||
/*
|
||||
** fill a closure with new closed upvalues
|
||||
*/
|
||||
void luaF_initupvals (lua_State *L, LClosure *cl) {
|
||||
int i;
|
||||
for (i = 0; i < cl->nupvalues; i++) {
|
||||
UpVal *uv = luaM_new(L, UpVal);
|
||||
uv->refcount = 1;
|
||||
uv->v = &uv->u.value; /* make it closed */
|
||||
setnilvalue(uv->v);
|
||||
cl->upvals[i] = uv;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
UpVal *luaF_findupval (lua_State *L, StkId level) {
|
||||
UpVal **pp = &L->openupval;
|
||||
UpVal *p;
|
||||
UpVal *uv;
|
||||
lua_assert(isintwups(L) || L->openupval == NULL);
|
||||
while (*pp != NULL && (p = *pp)->v >= level) {
|
||||
lua_assert(upisopen(p));
|
||||
if (p->v == level) /* found a corresponding upvalue? */
|
||||
return p; /* return it */
|
||||
pp = &p->u.open.next;
|
||||
}
|
||||
/* not found: create a new upvalue */
|
||||
uv = luaM_new(L, UpVal);
|
||||
uv->refcount = 0;
|
||||
uv->u.open.next = *pp; /* link it to list of open upvalues */
|
||||
uv->u.open.touched = 1;
|
||||
*pp = uv;
|
||||
uv->v = level; /* current value lives in the stack */
|
||||
if (!isintwups(L)) { /* thread not in list of threads with upvalues? */
|
||||
L->twups = G(L)->twups; /* link it to the list */
|
||||
G(L)->twups = L;
|
||||
}
|
||||
return uv;
|
||||
}
|
||||
|
||||
|
||||
void luaF_close (lua_State *L, StkId level) {
|
||||
UpVal *uv;
|
||||
while (L->openupval != NULL && (uv = L->openupval)->v >= level) {
|
||||
lua_assert(upisopen(uv));
|
||||
L->openupval = uv->u.open.next; /* remove from 'open' list */
|
||||
if (uv->refcount == 0) /* no references? */
|
||||
luaM_free(L, uv); /* free upvalue */
|
||||
else {
|
||||
setobj(L, &uv->u.value, uv->v); /* move value to upvalue slot */
|
||||
uv->v = &uv->u.value; /* now current value lives here */
|
||||
luaC_upvalbarrier(L, uv);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Proto *luaF_newproto (lua_State *L) {
|
||||
GCObject *o = luaC_newobj(L, LUA_TPROTO, sizeof(Proto));
|
||||
Proto *f = gco2p(o);
|
||||
f->k = NULL;
|
||||
f->sizek = 0;
|
||||
f->p = NULL;
|
||||
f->sizep = 0;
|
||||
f->code = NULL;
|
||||
f->cache = NULL;
|
||||
f->sizecode = 0;
|
||||
f->lineinfo = NULL;
|
||||
f->sizelineinfo = 0;
|
||||
f->upvalues = NULL;
|
||||
f->sizeupvalues = 0;
|
||||
f->numparams = 0;
|
||||
f->is_vararg = 0;
|
||||
f->maxstacksize = 0;
|
||||
f->locvars = NULL;
|
||||
f->sizelocvars = 0;
|
||||
f->linedefined = 0;
|
||||
f->lastlinedefined = 0;
|
||||
f->source = NULL;
|
||||
return f;
|
||||
}
|
||||
|
||||
|
||||
void luaF_freeproto (lua_State *L, Proto *f) {
|
||||
luaM_freearray(L, f->code, f->sizecode);
|
||||
luaM_freearray(L, f->p, f->sizep);
|
||||
luaM_freearray(L, f->k, f->sizek);
|
||||
luaM_freearray(L, f->lineinfo, f->sizelineinfo);
|
||||
luaM_freearray(L, f->locvars, f->sizelocvars);
|
||||
luaM_freearray(L, f->upvalues, f->sizeupvalues);
|
||||
luaM_free(L, f);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Look for n-th local variable at line 'line' in function 'func'.
|
||||
** Returns NULL if not found.
|
||||
*/
|
||||
const char *luaF_getlocalname (const Proto *f, int local_number, int pc) {
|
||||
int i;
|
||||
for (i = 0; i<f->sizelocvars && f->locvars[i].startpc <= pc; i++) {
|
||||
if (pc < f->locvars[i].endpc) { /* is variable active? */
|
||||
local_number--;
|
||||
if (local_number == 0)
|
||||
return getstr(f->locvars[i].varname);
|
||||
}
|
||||
}
|
||||
return NULL; /* not found */
|
||||
}
|
||||
|
||||
@ -0,0 +1,66 @@
|
||||
/*
|
||||
** $Id: linit.c,v 1.37 2014/12/09 15:00:17 roberto Exp $
|
||||
** Initialization of libraries for lua.c and other clients
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
|
||||
#define linit_c
|
||||
#define LUA_LIB
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
/*
|
||||
** If you embed Lua in your program and need to open the standard
|
||||
** libraries, call luaL_openlibs in your program. If you need a
|
||||
** different set of libraries, copy this file to your project and edit
|
||||
** it to suit your needs.
|
||||
**
|
||||
** You can also *preload* libraries, so that a later 'require' can
|
||||
** open the library, which is already linked to the application.
|
||||
** For that, do the following code:
|
||||
**
|
||||
** luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
|
||||
** lua_pushcfunction(L, luaopen_modname);
|
||||
** lua_setfield(L, -2, modname);
|
||||
** lua_pop(L, 1); // remove _PRELOAD table
|
||||
*/
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lualib.h"
|
||||
#include "lauxlib.h"
|
||||
|
||||
|
||||
/*
|
||||
** these libs are loaded by lua.c and are readily available to any Lua
|
||||
** program
|
||||
*/
|
||||
static const luaL_Reg loadedlibs[] = {
|
||||
{"_G", luaopen_base},
|
||||
{LUA_LOADLIBNAME, luaopen_package},
|
||||
{LUA_COLIBNAME, luaopen_coroutine},
|
||||
{LUA_TABLIBNAME, luaopen_table},
|
||||
{LUA_IOLIBNAME, luaopen_io},
|
||||
{LUA_OSLIBNAME, luaopen_os},
|
||||
{LUA_STRLIBNAME, luaopen_string},
|
||||
{LUA_MATHLIBNAME, luaopen_math},
|
||||
{LUA_UTF8LIBNAME, luaopen_utf8},
|
||||
{LUA_DBLIBNAME, luaopen_debug},
|
||||
#if defined(LUA_COMPAT_BITLIB)
|
||||
{LUA_BITLIBNAME, luaopen_bit32},
|
||||
#endif
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
LUALIB_API void luaL_openlibs (lua_State *L) {
|
||||
const luaL_Reg *lib;
|
||||
/* "require" functions from 'loadedlibs' and set results to global table */
|
||||
for (lib = loadedlibs; lib->func; lib++) {
|
||||
luaL_requiref(L, lib->name, lib->func, 1);
|
||||
lua_pop(L, 1); /* remove lib */
|
||||
}
|
||||
}
|
||||
|
||||
@ -0,0 +1,759 @@
|
||||
/*
|
||||
** $Id: liolib.c,v 2.141 2014/11/21 12:17:33 roberto Exp $
|
||||
** Standard I/O (and system) library
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define liolib_c
|
||||
#define LUA_LIB
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <ctype.h>
|
||||
#include <errno.h>
|
||||
#include <locale.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lauxlib.h"
|
||||
#include "lualib.h"
|
||||
|
||||
|
||||
#if !defined(l_checkmode)
|
||||
|
||||
/*
|
||||
** Check whether 'mode' matches '[rwa]%+?b?'.
|
||||
** Change this macro to accept other modes for 'fopen' besides
|
||||
** the standard ones.
|
||||
*/
|
||||
#define l_checkmode(mode) \
|
||||
(*mode != '\0' && strchr("rwa", *(mode++)) != NULL && \
|
||||
(*mode != '+' || ++mode) && /* skip if char is '+' */ \
|
||||
(*mode != 'b' || ++mode) && /* skip if char is 'b' */ \
|
||||
(*mode == '\0'))
|
||||
|
||||
#endif
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** l_popen spawns a new process connected to the current
|
||||
** one through the file streams.
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
#if !defined(l_popen) /* { */
|
||||
|
||||
#if defined(LUA_USE_POSIX) /* { */
|
||||
|
||||
#define l_popen(L,c,m) (fflush(NULL), popen(c,m))
|
||||
#define l_pclose(L,file) (pclose(file))
|
||||
|
||||
#elif defined(LUA_USE_WINDOWS) /* }{ */
|
||||
|
||||
#define l_popen(L,c,m) (_popen(c,m))
|
||||
#define l_pclose(L,file) (_pclose(file))
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
/* ISO C definitions */
|
||||
#define l_popen(L,c,m) \
|
||||
((void)((void)c, m), \
|
||||
luaL_error(L, "'popen' not supported"), \
|
||||
(FILE*)0)
|
||||
#define l_pclose(L,file) ((void)L, (void)file, -1)
|
||||
|
||||
#endif /* } */
|
||||
|
||||
#endif /* } */
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
#if !defined(l_getc) /* { */
|
||||
|
||||
#if defined(LUA_USE_POSIX)
|
||||
#define l_getc(f) getc_unlocked(f)
|
||||
#define l_lockfile(f) flockfile(f)
|
||||
#define l_unlockfile(f) funlockfile(f)
|
||||
#else
|
||||
#define l_getc(f) getc(f)
|
||||
#define l_lockfile(f) ((void)0)
|
||||
#define l_unlockfile(f) ((void)0)
|
||||
#endif
|
||||
|
||||
#endif /* } */
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** l_fseek: configuration for longer offsets
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
#if !defined(l_fseek) /* { */
|
||||
|
||||
#if defined(LUA_USE_POSIX) /* { */
|
||||
|
||||
#include <sys/types.h>
|
||||
|
||||
#define l_fseek(f,o,w) fseeko(f,o,w)
|
||||
#define l_ftell(f) ftello(f)
|
||||
#define l_seeknum off_t
|
||||
|
||||
#elif defined(LUA_USE_WINDOWS) && !defined(_CRTIMP_TYPEINFO) \
|
||||
&& defined(_MSC_VER) && (_MSC_VER >= 1400) /* }{ */
|
||||
|
||||
/* Windows (but not DDK) and Visual C++ 2005 or higher */
|
||||
#define l_fseek(f,o,w) _fseeki64(f,o,w)
|
||||
#define l_ftell(f) _ftelli64(f)
|
||||
#define l_seeknum __int64
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
/* ISO C definitions */
|
||||
#define l_fseek(f,o,w) fseek(f,o,w)
|
||||
#define l_ftell(f) ftell(f)
|
||||
#define l_seeknum long
|
||||
|
||||
#endif /* } */
|
||||
|
||||
#endif /* } */
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
#define IO_PREFIX "_IO_"
|
||||
#define IOPREF_LEN (sizeof(IO_PREFIX)/sizeof(char) - 1)
|
||||
#define IO_INPUT (IO_PREFIX "input")
|
||||
#define IO_OUTPUT (IO_PREFIX "output")
|
||||
|
||||
|
||||
typedef luaL_Stream LStream;
|
||||
|
||||
|
||||
#define tolstream(L) ((LStream *)luaL_checkudata(L, 1, LUA_FILEHANDLE))
|
||||
|
||||
#define isclosed(p) ((p)->closef == NULL)
|
||||
|
||||
|
||||
static int io_type (lua_State *L) {
|
||||
LStream *p;
|
||||
luaL_checkany(L, 1);
|
||||
p = (LStream *)luaL_testudata(L, 1, LUA_FILEHANDLE);
|
||||
if (p == NULL)
|
||||
lua_pushnil(L); /* not a file */
|
||||
else if (isclosed(p))
|
||||
lua_pushliteral(L, "closed file");
|
||||
else
|
||||
lua_pushliteral(L, "file");
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int f_tostring (lua_State *L) {
|
||||
LStream *p = tolstream(L);
|
||||
if (isclosed(p))
|
||||
lua_pushliteral(L, "file (closed)");
|
||||
else
|
||||
lua_pushfstring(L, "file (%p)", p->f);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static FILE *tofile (lua_State *L) {
|
||||
LStream *p = tolstream(L);
|
||||
if (isclosed(p))
|
||||
luaL_error(L, "attempt to use a closed file");
|
||||
lua_assert(p->f);
|
||||
return p->f;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** When creating file handles, always creates a 'closed' file handle
|
||||
** before opening the actual file; so, if there is a memory error, the
|
||||
** file is not left opened.
|
||||
*/
|
||||
static LStream *newprefile (lua_State *L) {
|
||||
LStream *p = (LStream *)lua_newuserdata(L, sizeof(LStream));
|
||||
p->closef = NULL; /* mark file handle as 'closed' */
|
||||
luaL_setmetatable(L, LUA_FILEHANDLE);
|
||||
return p;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Calls the 'close' function from a file handle. The 'volatile' avoids
|
||||
** a bug in some versions of the Clang compiler (e.g., clang 3.0 for
|
||||
** 32 bits).
|
||||
*/
|
||||
static int aux_close (lua_State *L) {
|
||||
LStream *p = tolstream(L);
|
||||
volatile lua_CFunction cf = p->closef;
|
||||
p->closef = NULL; /* mark stream as closed */
|
||||
return (*cf)(L); /* close it */
|
||||
}
|
||||
|
||||
|
||||
static int io_close (lua_State *L) {
|
||||
if (lua_isnone(L, 1)) /* no argument? */
|
||||
lua_getfield(L, LUA_REGISTRYINDEX, IO_OUTPUT); /* use standard output */
|
||||
tofile(L); /* make sure argument is an open stream */
|
||||
return aux_close(L);
|
||||
}
|
||||
|
||||
|
||||
static int f_gc (lua_State *L) {
|
||||
LStream *p = tolstream(L);
|
||||
if (!isclosed(p) && p->f != NULL)
|
||||
aux_close(L); /* ignore closed and incompletely open files */
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** function to close regular files
|
||||
*/
|
||||
static int io_fclose (lua_State *L) {
|
||||
LStream *p = tolstream(L);
|
||||
int res = fclose(p->f);
|
||||
return luaL_fileresult(L, (res == 0), NULL);
|
||||
}
|
||||
|
||||
|
||||
static LStream *newfile (lua_State *L) {
|
||||
LStream *p = newprefile(L);
|
||||
p->f = NULL;
|
||||
p->closef = &io_fclose;
|
||||
return p;
|
||||
}
|
||||
|
||||
|
||||
static void opencheck (lua_State *L, const char *fname, const char *mode) {
|
||||
LStream *p = newfile(L);
|
||||
p->f = fopen(fname, mode);
|
||||
if (p->f == NULL)
|
||||
luaL_error(L, "cannot open file '%s' (%s)", fname, strerror(errno));
|
||||
}
|
||||
|
||||
|
||||
static int io_open (lua_State *L) {
|
||||
const char *filename = luaL_checkstring(L, 1);
|
||||
const char *mode = luaL_optstring(L, 2, "r");
|
||||
LStream *p = newfile(L);
|
||||
const char *md = mode; /* to traverse/check mode */
|
||||
luaL_argcheck(L, l_checkmode(md), 2, "invalid mode");
|
||||
p->f = fopen(filename, mode);
|
||||
return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** function to close 'popen' files
|
||||
*/
|
||||
static int io_pclose (lua_State *L) {
|
||||
LStream *p = tolstream(L);
|
||||
return luaL_execresult(L, l_pclose(L, p->f));
|
||||
}
|
||||
|
||||
|
||||
static int io_popen (lua_State *L) {
|
||||
const char *filename = luaL_checkstring(L, 1);
|
||||
const char *mode = luaL_optstring(L, 2, "r");
|
||||
LStream *p = newprefile(L);
|
||||
p->f = l_popen(L, filename, mode);
|
||||
p->closef = &io_pclose;
|
||||
return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1;
|
||||
}
|
||||
|
||||
|
||||
static int io_tmpfile (lua_State *L) {
|
||||
LStream *p = newfile(L);
|
||||
p->f = tmpfile();
|
||||
return (p->f == NULL) ? luaL_fileresult(L, 0, NULL) : 1;
|
||||
}
|
||||
|
||||
|
||||
static FILE *getiofile (lua_State *L, const char *findex) {
|
||||
LStream *p;
|
||||
lua_getfield(L, LUA_REGISTRYINDEX, findex);
|
||||
p = (LStream *)lua_touserdata(L, -1);
|
||||
if (isclosed(p))
|
||||
luaL_error(L, "standard %s file is closed", findex + IOPREF_LEN);
|
||||
return p->f;
|
||||
}
|
||||
|
||||
|
||||
static int g_iofile (lua_State *L, const char *f, const char *mode) {
|
||||
if (!lua_isnoneornil(L, 1)) {
|
||||
const char *filename = lua_tostring(L, 1);
|
||||
if (filename)
|
||||
opencheck(L, filename, mode);
|
||||
else {
|
||||
tofile(L); /* check that it's a valid file handle */
|
||||
lua_pushvalue(L, 1);
|
||||
}
|
||||
lua_setfield(L, LUA_REGISTRYINDEX, f);
|
||||
}
|
||||
/* return current value */
|
||||
lua_getfield(L, LUA_REGISTRYINDEX, f);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int io_input (lua_State *L) {
|
||||
return g_iofile(L, IO_INPUT, "r");
|
||||
}
|
||||
|
||||
|
||||
static int io_output (lua_State *L) {
|
||||
return g_iofile(L, IO_OUTPUT, "w");
|
||||
}
|
||||
|
||||
|
||||
static int io_readline (lua_State *L);
|
||||
|
||||
|
||||
static void aux_lines (lua_State *L, int toclose) {
|
||||
int n = lua_gettop(L) - 1; /* number of arguments to read */
|
||||
lua_pushinteger(L, n); /* number of arguments to read */
|
||||
lua_pushboolean(L, toclose); /* close/not close file when finished */
|
||||
lua_rotate(L, 2, 2); /* move 'n' and 'toclose' to their positions */
|
||||
lua_pushcclosure(L, io_readline, 3 + n);
|
||||
}
|
||||
|
||||
|
||||
static int f_lines (lua_State *L) {
|
||||
tofile(L); /* check that it's a valid file handle */
|
||||
aux_lines(L, 0);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int io_lines (lua_State *L) {
|
||||
int toclose;
|
||||
if (lua_isnone(L, 1)) lua_pushnil(L); /* at least one argument */
|
||||
if (lua_isnil(L, 1)) { /* no file name? */
|
||||
lua_getfield(L, LUA_REGISTRYINDEX, IO_INPUT); /* get default input */
|
||||
lua_replace(L, 1); /* put it at index 1 */
|
||||
tofile(L); /* check that it's a valid file handle */
|
||||
toclose = 0; /* do not close it after iteration */
|
||||
}
|
||||
else { /* open a new file */
|
||||
const char *filename = luaL_checkstring(L, 1);
|
||||
opencheck(L, filename, "r");
|
||||
lua_replace(L, 1); /* put file at index 1 */
|
||||
toclose = 1; /* close it after iteration */
|
||||
}
|
||||
aux_lines(L, toclose);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** READ
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
|
||||
/* maximum length of a numeral */
|
||||
#define MAXRN 200
|
||||
|
||||
/* auxiliary structure used by 'read_number' */
|
||||
typedef struct {
|
||||
FILE *f; /* file being read */
|
||||
int c; /* current character (look ahead) */
|
||||
int n; /* number of elements in buffer 'buff' */
|
||||
char buff[MAXRN + 1]; /* +1 for ending '\0' */
|
||||
} RN;
|
||||
|
||||
|
||||
/*
|
||||
** Add current char to buffer (if not out of space) and read next one
|
||||
*/
|
||||
static int nextc (RN *rn) {
|
||||
if (rn->n >= MAXRN) { /* buffer overflow? */
|
||||
rn->buff[0] = '\0'; /* invalidate result */
|
||||
return 0; /* fail */
|
||||
}
|
||||
else {
|
||||
rn->buff[rn->n++] = rn->c; /* save current char */
|
||||
rn->c = l_getc(rn->f); /* read next one */
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Accept current char if it is in 'set' (of size 1 or 2)
|
||||
*/
|
||||
static int test2 (RN *rn, const char *set) {
|
||||
if (rn->c == set[0] || (rn->c == set[1] && rn->c != '\0'))
|
||||
return nextc(rn);
|
||||
else return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Read a sequence of (hex)digits
|
||||
*/
|
||||
static int readdigits (RN *rn, int hex) {
|
||||
int count = 0;
|
||||
while ((hex ? isxdigit(rn->c) : isdigit(rn->c)) && nextc(rn))
|
||||
count++;
|
||||
return count;
|
||||
}
|
||||
|
||||
|
||||
/* access to locale "radix character" (decimal point) */
|
||||
#if !defined(l_getlocaledecpoint)
|
||||
#define l_getlocaledecpoint() (localeconv()->decimal_point[0])
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** Read a number: first reads a valid prefix of a numeral into a buffer.
|
||||
** Then it calls 'lua_stringtonumber' to check whether the format is
|
||||
** correct and to convert it to a Lua number
|
||||
*/
|
||||
static int read_number (lua_State *L, FILE *f) {
|
||||
RN rn;
|
||||
int count = 0;
|
||||
int hex = 0;
|
||||
char decp[2] = ".";
|
||||
rn.f = f; rn.n = 0;
|
||||
decp[0] = l_getlocaledecpoint(); /* get decimal point from locale */
|
||||
l_lockfile(rn.f);
|
||||
do { rn.c = l_getc(rn.f); } while (isspace(rn.c)); /* skip spaces */
|
||||
test2(&rn, "-+"); /* optional signal */
|
||||
if (test2(&rn, "0")) {
|
||||
if (test2(&rn, "xX")) hex = 1; /* numeral is hexadecimal */
|
||||
else count = 1; /* count initial '0' as a valid digit */
|
||||
}
|
||||
count += readdigits(&rn, hex); /* integral part */
|
||||
if (test2(&rn, decp)) /* decimal point? */
|
||||
count += readdigits(&rn, hex); /* fractional part */
|
||||
if (count > 0 && test2(&rn, (hex ? "pP" : "eE"))) { /* exponent mark? */
|
||||
test2(&rn, "-+"); /* exponent signal */
|
||||
readdigits(&rn, 0); /* exponent digits */
|
||||
}
|
||||
ungetc(rn.c, rn.f); /* unread look-ahead char */
|
||||
l_unlockfile(rn.f);
|
||||
rn.buff[rn.n] = '\0'; /* finish string */
|
||||
if (lua_stringtonumber(L, rn.buff)) /* is this a valid number? */
|
||||
return 1; /* ok */
|
||||
else { /* invalid format */
|
||||
lua_pushnil(L); /* "result" to be removed */
|
||||
return 0; /* read fails */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int test_eof (lua_State *L, FILE *f) {
|
||||
int c = getc(f);
|
||||
ungetc(c, f); /* no-op when c == EOF */
|
||||
lua_pushlstring(L, NULL, 0);
|
||||
return (c != EOF);
|
||||
}
|
||||
|
||||
|
||||
static int read_line (lua_State *L, FILE *f, int chop) {
|
||||
luaL_Buffer b;
|
||||
int c;
|
||||
luaL_buffinit(L, &b);
|
||||
for (;;) {
|
||||
char *buff = luaL_prepbuffer(&b); /* pre-allocate buffer */
|
||||
int i = 0;
|
||||
l_lockfile(f); /* no memory errors can happen inside the lock */
|
||||
while (i < LUAL_BUFFERSIZE && (c = l_getc(f)) != EOF && c != '\n')
|
||||
buff[i++] = c;
|
||||
l_unlockfile(f);
|
||||
luaL_addsize(&b, i);
|
||||
if (i < LUAL_BUFFERSIZE)
|
||||
break;
|
||||
}
|
||||
if (!chop && c == '\n') /* want a newline and have one? */
|
||||
luaL_addchar(&b, c); /* add ending newline to result */
|
||||
luaL_pushresult(&b); /* close buffer */
|
||||
/* return ok if read something (either a newline or something else) */
|
||||
return (c == '\n' || lua_rawlen(L, -1) > 0);
|
||||
}
|
||||
|
||||
|
||||
static void read_all (lua_State *L, FILE *f) {
|
||||
size_t nr;
|
||||
luaL_Buffer b;
|
||||
luaL_buffinit(L, &b);
|
||||
do { /* read file in chunks of LUAL_BUFFERSIZE bytes */
|
||||
char *p = luaL_prepbuffsize(&b, LUAL_BUFFERSIZE);
|
||||
nr = fread(p, sizeof(char), LUAL_BUFFERSIZE, f);
|
||||
luaL_addsize(&b, nr);
|
||||
} while (nr == LUAL_BUFFERSIZE);
|
||||
luaL_pushresult(&b); /* close buffer */
|
||||
}
|
||||
|
||||
|
||||
static int read_chars (lua_State *L, FILE *f, size_t n) {
|
||||
size_t nr; /* number of chars actually read */
|
||||
char *p;
|
||||
luaL_Buffer b;
|
||||
luaL_buffinit(L, &b);
|
||||
p = luaL_prepbuffsize(&b, n); /* prepare buffer to read whole block */
|
||||
nr = fread(p, sizeof(char), n, f); /* try to read 'n' chars */
|
||||
luaL_addsize(&b, nr);
|
||||
luaL_pushresult(&b); /* close buffer */
|
||||
return (nr > 0); /* true iff read something */
|
||||
}
|
||||
|
||||
|
||||
static int g_read (lua_State *L, FILE *f, int first) {
|
||||
int nargs = lua_gettop(L) - 1;
|
||||
int success;
|
||||
int n;
|
||||
clearerr(f);
|
||||
if (nargs == 0) { /* no arguments? */
|
||||
success = read_line(L, f, 1);
|
||||
n = first+1; /* to return 1 result */
|
||||
}
|
||||
else { /* ensure stack space for all results and for auxlib's buffer */
|
||||
luaL_checkstack(L, nargs+LUA_MINSTACK, "too many arguments");
|
||||
success = 1;
|
||||
for (n = first; nargs-- && success; n++) {
|
||||
if (lua_type(L, n) == LUA_TNUMBER) {
|
||||
size_t l = (size_t)luaL_checkinteger(L, n);
|
||||
success = (l == 0) ? test_eof(L, f) : read_chars(L, f, l);
|
||||
}
|
||||
else {
|
||||
const char *p = luaL_checkstring(L, n);
|
||||
if (*p == '*') p++; /* skip optional '*' (for compatibility) */
|
||||
switch (*p) {
|
||||
case 'n': /* number */
|
||||
success = read_number(L, f);
|
||||
break;
|
||||
case 'l': /* line */
|
||||
success = read_line(L, f, 1);
|
||||
break;
|
||||
case 'L': /* line with end-of-line */
|
||||
success = read_line(L, f, 0);
|
||||
break;
|
||||
case 'a': /* file */
|
||||
read_all(L, f); /* read entire file */
|
||||
success = 1; /* always success */
|
||||
break;
|
||||
default:
|
||||
return luaL_argerror(L, n, "invalid format");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
if (ferror(f))
|
||||
return luaL_fileresult(L, 0, NULL);
|
||||
if (!success) {
|
||||
lua_pop(L, 1); /* remove last result */
|
||||
lua_pushnil(L); /* push nil instead */
|
||||
}
|
||||
return n - first;
|
||||
}
|
||||
|
||||
|
||||
static int io_read (lua_State *L) {
|
||||
return g_read(L, getiofile(L, IO_INPUT), 1);
|
||||
}
|
||||
|
||||
|
||||
static int f_read (lua_State *L) {
|
||||
return g_read(L, tofile(L), 2);
|
||||
}
|
||||
|
||||
|
||||
static int io_readline (lua_State *L) {
|
||||
LStream *p = (LStream *)lua_touserdata(L, lua_upvalueindex(1));
|
||||
int i;
|
||||
int n = (int)lua_tointeger(L, lua_upvalueindex(2));
|
||||
if (isclosed(p)) /* file is already closed? */
|
||||
return luaL_error(L, "file is already closed");
|
||||
lua_settop(L , 1);
|
||||
luaL_checkstack(L, n, "too many arguments");
|
||||
for (i = 1; i <= n; i++) /* push arguments to 'g_read' */
|
||||
lua_pushvalue(L, lua_upvalueindex(3 + i));
|
||||
n = g_read(L, p->f, 2); /* 'n' is number of results */
|
||||
lua_assert(n > 0); /* should return at least a nil */
|
||||
if (lua_toboolean(L, -n)) /* read at least one value? */
|
||||
return n; /* return them */
|
||||
else { /* first result is nil: EOF or error */
|
||||
if (n > 1) { /* is there error information? */
|
||||
/* 2nd result is error message */
|
||||
return luaL_error(L, "%s", lua_tostring(L, -n + 1));
|
||||
}
|
||||
if (lua_toboolean(L, lua_upvalueindex(3))) { /* generator created file? */
|
||||
lua_settop(L, 0);
|
||||
lua_pushvalue(L, lua_upvalueindex(1));
|
||||
aux_close(L); /* close it */
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
static int g_write (lua_State *L, FILE *f, int arg) {
|
||||
int nargs = lua_gettop(L) - arg;
|
||||
int status = 1;
|
||||
for (; nargs--; arg++) {
|
||||
if (lua_type(L, arg) == LUA_TNUMBER) {
|
||||
/* optimization: could be done exactly as for strings */
|
||||
int len = lua_isinteger(L, arg)
|
||||
? fprintf(f, LUA_INTEGER_FMT, lua_tointeger(L, arg))
|
||||
: fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg));
|
||||
status = status && (len > 0);
|
||||
}
|
||||
else {
|
||||
size_t l;
|
||||
const char *s = luaL_checklstring(L, arg, &l);
|
||||
status = status && (fwrite(s, sizeof(char), l, f) == l);
|
||||
}
|
||||
}
|
||||
if (status) return 1; /* file handle already on stack top */
|
||||
else return luaL_fileresult(L, status, NULL);
|
||||
}
|
||||
|
||||
|
||||
static int io_write (lua_State *L) {
|
||||
return g_write(L, getiofile(L, IO_OUTPUT), 1);
|
||||
}
|
||||
|
||||
|
||||
static int f_write (lua_State *L) {
|
||||
FILE *f = tofile(L);
|
||||
lua_pushvalue(L, 1); /* push file at the stack top (to be returned) */
|
||||
return g_write(L, f, 2);
|
||||
}
|
||||
|
||||
|
||||
static int f_seek (lua_State *L) {
|
||||
static const int mode[] = {SEEK_SET, SEEK_CUR, SEEK_END};
|
||||
static const char *const modenames[] = {"set", "cur", "end", NULL};
|
||||
FILE *f = tofile(L);
|
||||
int op = luaL_checkoption(L, 2, "cur", modenames);
|
||||
lua_Integer p3 = luaL_optinteger(L, 3, 0);
|
||||
l_seeknum offset = (l_seeknum)p3;
|
||||
luaL_argcheck(L, (lua_Integer)offset == p3, 3,
|
||||
"not an integer in proper range");
|
||||
op = l_fseek(f, offset, mode[op]);
|
||||
if (op)
|
||||
return luaL_fileresult(L, 0, NULL); /* error */
|
||||
else {
|
||||
lua_pushinteger(L, (lua_Integer)l_ftell(f));
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int f_setvbuf (lua_State *L) {
|
||||
static const int mode[] = {_IONBF, _IOFBF, _IOLBF};
|
||||
static const char *const modenames[] = {"no", "full", "line", NULL};
|
||||
FILE *f = tofile(L);
|
||||
int op = luaL_checkoption(L, 2, NULL, modenames);
|
||||
lua_Integer sz = luaL_optinteger(L, 3, LUAL_BUFFERSIZE);
|
||||
int res = setvbuf(f, NULL, mode[op], (size_t)sz);
|
||||
return luaL_fileresult(L, res == 0, NULL);
|
||||
}
|
||||
|
||||
|
||||
|
||||
static int io_flush (lua_State *L) {
|
||||
return luaL_fileresult(L, fflush(getiofile(L, IO_OUTPUT)) == 0, NULL);
|
||||
}
|
||||
|
||||
|
||||
static int f_flush (lua_State *L) {
|
||||
return luaL_fileresult(L, fflush(tofile(L)) == 0, NULL);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** functions for 'io' library
|
||||
*/
|
||||
static const luaL_Reg iolib[] = {
|
||||
{"close", io_close},
|
||||
{"flush", io_flush},
|
||||
{"input", io_input},
|
||||
{"lines", io_lines},
|
||||
{"open", io_open},
|
||||
{"output", io_output},
|
||||
{"popen", io_popen},
|
||||
{"read", io_read},
|
||||
{"tmpfile", io_tmpfile},
|
||||
{"type", io_type},
|
||||
{"write", io_write},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
** methods for file handles
|
||||
*/
|
||||
static const luaL_Reg flib[] = {
|
||||
{"close", io_close},
|
||||
{"flush", f_flush},
|
||||
{"lines", f_lines},
|
||||
{"read", f_read},
|
||||
{"seek", f_seek},
|
||||
{"setvbuf", f_setvbuf},
|
||||
{"write", f_write},
|
||||
{"__gc", f_gc},
|
||||
{"__tostring", f_tostring},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
static void createmeta (lua_State *L) {
|
||||
luaL_newmetatable(L, LUA_FILEHANDLE); /* create metatable for file handles */
|
||||
lua_pushvalue(L, -1); /* push metatable */
|
||||
lua_setfield(L, -2, "__index"); /* metatable.__index = metatable */
|
||||
luaL_setfuncs(L, flib, 0); /* add file methods to new metatable */
|
||||
lua_pop(L, 1); /* pop new metatable */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** function to (not) close the standard files stdin, stdout, and stderr
|
||||
*/
|
||||
static int io_noclose (lua_State *L) {
|
||||
LStream *p = tolstream(L);
|
||||
p->closef = &io_noclose; /* keep file opened */
|
||||
lua_pushnil(L);
|
||||
lua_pushliteral(L, "cannot close standard file");
|
||||
return 2;
|
||||
}
|
||||
|
||||
|
||||
static void createstdfile (lua_State *L, FILE *f, const char *k,
|
||||
const char *fname) {
|
||||
LStream *p = newprefile(L);
|
||||
p->f = f;
|
||||
p->closef = &io_noclose;
|
||||
if (k != NULL) {
|
||||
lua_pushvalue(L, -1);
|
||||
lua_setfield(L, LUA_REGISTRYINDEX, k); /* add file to registry */
|
||||
}
|
||||
lua_setfield(L, -2, fname); /* add file to module */
|
||||
}
|
||||
|
||||
|
||||
LUAMOD_API int luaopen_io (lua_State *L) {
|
||||
luaL_newlib(L, iolib); /* new module */
|
||||
createmeta(L);
|
||||
/* create (and set) default files */
|
||||
createstdfile(L, stdin, IO_INPUT, "stdin");
|
||||
createstdfile(L, stdout, IO_OUTPUT, "stdout");
|
||||
createstdfile(L, stderr, NULL, "stderr");
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -0,0 +1,602 @@
|
||||
/*
|
||||
** $Id: llex.c,v 2.89 2014/11/14 16:06:09 roberto Exp $
|
||||
** Lexical Analyzer
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define llex_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <locale.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lctype.h"
|
||||
#include "ldo.h"
|
||||
#include "lgc.h"
|
||||
#include "llex.h"
|
||||
#include "lobject.h"
|
||||
#include "lparser.h"
|
||||
#include "lstate.h"
|
||||
#include "lstring.h"
|
||||
#include "ltable.h"
|
||||
#include "lzio.h"
|
||||
|
||||
|
||||
|
||||
#define next(ls) (ls->current = zgetc(ls->z))
|
||||
|
||||
|
||||
|
||||
#define currIsNewline(ls) (ls->current == '\n' || ls->current == '\r')
|
||||
|
||||
|
||||
/* ORDER RESERVED */
|
||||
static const char *const luaX_tokens [] = {
|
||||
"and", "break", "do", "else", "elseif",
|
||||
"end", "false", "for", "function", "goto", "if",
|
||||
"in", "local", "nil", "not", "or", "repeat",
|
||||
"return", "then", "true", "until", "while",
|
||||
"//", "..", "...", "==", ">=", "<=", "~=",
|
||||
"<<", ">>", "::", "<eof>",
|
||||
"<number>", "<integer>", "<name>", "<string>"
|
||||
};
|
||||
|
||||
|
||||
#define save_and_next(ls) (save(ls, ls->current), next(ls))
|
||||
|
||||
|
||||
static l_noret lexerror (LexState *ls, const char *msg, int token);
|
||||
|
||||
|
||||
static void save (LexState *ls, int c) {
|
||||
Mbuffer *b = ls->buff;
|
||||
if (luaZ_bufflen(b) + 1 > luaZ_sizebuffer(b)) {
|
||||
size_t newsize;
|
||||
if (luaZ_sizebuffer(b) >= MAX_SIZE/2)
|
||||
lexerror(ls, "lexical element too long", 0);
|
||||
newsize = luaZ_sizebuffer(b) * 2;
|
||||
luaZ_resizebuffer(ls->L, b, newsize);
|
||||
}
|
||||
b->buffer[luaZ_bufflen(b)++] = cast(char, c);
|
||||
}
|
||||
|
||||
|
||||
void luaX_init (lua_State *L) {
|
||||
int i;
|
||||
TString *e = luaS_new(L, LUA_ENV); /* create env name */
|
||||
luaC_fix(L, obj2gco(e)); /* never collect this name */
|
||||
for (i=0; i<NUM_RESERVED; i++) {
|
||||
TString *ts = luaS_new(L, luaX_tokens[i]);
|
||||
luaC_fix(L, obj2gco(ts)); /* reserved words are never collected */
|
||||
ts->extra = cast_byte(i+1); /* reserved word */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
const char *luaX_token2str (LexState *ls, int token) {
|
||||
if (token < FIRST_RESERVED) { /* single-byte symbols? */
|
||||
lua_assert(token == cast_uchar(token));
|
||||
return luaO_pushfstring(ls->L, "'%c'", token);
|
||||
}
|
||||
else {
|
||||
const char *s = luaX_tokens[token - FIRST_RESERVED];
|
||||
if (token < TK_EOS) /* fixed format (symbols and reserved words)? */
|
||||
return luaO_pushfstring(ls->L, "'%s'", s);
|
||||
else /* names, strings, and numerals */
|
||||
return s;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static const char *txtToken (LexState *ls, int token) {
|
||||
switch (token) {
|
||||
case TK_NAME: case TK_STRING:
|
||||
case TK_FLT: case TK_INT:
|
||||
save(ls, '\0');
|
||||
return luaO_pushfstring(ls->L, "'%s'", luaZ_buffer(ls->buff));
|
||||
default:
|
||||
return luaX_token2str(ls, token);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static l_noret lexerror (LexState *ls, const char *msg, int token) {
|
||||
char buff[LUA_IDSIZE];
|
||||
luaO_chunkid(buff, getstr(ls->source), LUA_IDSIZE);
|
||||
msg = luaO_pushfstring(ls->L, "%s:%d: %s", buff, ls->linenumber, msg);
|
||||
if (token)
|
||||
luaO_pushfstring(ls->L, "%s near %s", msg, txtToken(ls, token));
|
||||
luaD_throw(ls->L, LUA_ERRSYNTAX);
|
||||
}
|
||||
|
||||
|
||||
l_noret luaX_syntaxerror (LexState *ls, const char *msg) {
|
||||
lexerror(ls, msg, ls->t.token);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** creates a new string and anchors it in scanner's table so that
|
||||
** it will not be collected until the end of the compilation
|
||||
** (by that time it should be anchored somewhere)
|
||||
*/
|
||||
TString *luaX_newstring (LexState *ls, const char *str, size_t l) {
|
||||
lua_State *L = ls->L;
|
||||
TValue *o; /* entry for 'str' */
|
||||
TString *ts = luaS_newlstr(L, str, l); /* create new string */
|
||||
setsvalue2s(L, L->top++, ts); /* temporarily anchor it in stack */
|
||||
o = luaH_set(L, ls->h, L->top - 1);
|
||||
if (ttisnil(o)) { /* not in use yet? */
|
||||
/* boolean value does not need GC barrier;
|
||||
table has no metatable, so it does not need to invalidate cache */
|
||||
setbvalue(o, 1); /* t[string] = true */
|
||||
luaC_checkGC(L);
|
||||
}
|
||||
else { /* string already present */
|
||||
ts = tsvalue(keyfromval(o)); /* re-use value previously stored */
|
||||
}
|
||||
L->top--; /* remove string from stack */
|
||||
return ts;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** increment line number and skips newline sequence (any of
|
||||
** \n, \r, \n\r, or \r\n)
|
||||
*/
|
||||
static void inclinenumber (LexState *ls) {
|
||||
int old = ls->current;
|
||||
lua_assert(currIsNewline(ls));
|
||||
next(ls); /* skip '\n' or '\r' */
|
||||
if (currIsNewline(ls) && ls->current != old)
|
||||
next(ls); /* skip '\n\r' or '\r\n' */
|
||||
if (++ls->linenumber >= MAX_INT)
|
||||
lexerror(ls, "chunk has too many lines", 0);
|
||||
}
|
||||
|
||||
|
||||
void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source,
|
||||
int firstchar) {
|
||||
ls->t.token = 0;
|
||||
ls->decpoint = '.';
|
||||
ls->L = L;
|
||||
ls->current = firstchar;
|
||||
ls->lookahead.token = TK_EOS; /* no look-ahead token */
|
||||
ls->z = z;
|
||||
ls->fs = NULL;
|
||||
ls->linenumber = 1;
|
||||
ls->lastline = 1;
|
||||
ls->source = source;
|
||||
ls->envn = luaS_new(L, LUA_ENV); /* get env name */
|
||||
luaZ_resizebuffer(ls->L, ls->buff, LUA_MINBUFFER); /* initialize buffer */
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** =======================================================
|
||||
** LEXICAL ANALYZER
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
|
||||
static int check_next1 (LexState *ls, int c) {
|
||||
if (ls->current == c) {
|
||||
next(ls);
|
||||
return 1;
|
||||
}
|
||||
else return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Check whether current char is in set 'set' (with two chars) and
|
||||
** saves it
|
||||
*/
|
||||
static int check_next2 (LexState *ls, const char *set) {
|
||||
lua_assert(set[2] == '\0');
|
||||
if (ls->current == set[0] || ls->current == set[1]) {
|
||||
save_and_next(ls);
|
||||
return 1;
|
||||
}
|
||||
else return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** change all characters 'from' in buffer to 'to'
|
||||
*/
|
||||
static void buffreplace (LexState *ls, char from, char to) {
|
||||
if (from != to) {
|
||||
size_t n = luaZ_bufflen(ls->buff);
|
||||
char *p = luaZ_buffer(ls->buff);
|
||||
while (n--)
|
||||
if (p[n] == from) p[n] = to;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#if !defined(l_getlocaledecpoint)
|
||||
#define l_getlocaledecpoint() (localeconv()->decimal_point[0])
|
||||
#endif
|
||||
|
||||
|
||||
#define buff2num(b,o) (luaO_str2num(luaZ_buffer(b), o) != 0)
|
||||
|
||||
/*
|
||||
** in case of format error, try to change decimal point separator to
|
||||
** the one defined in the current locale and check again
|
||||
*/
|
||||
static void trydecpoint (LexState *ls, TValue *o) {
|
||||
char old = ls->decpoint;
|
||||
ls->decpoint = l_getlocaledecpoint();
|
||||
buffreplace(ls, old, ls->decpoint); /* try new decimal separator */
|
||||
if (!buff2num(ls->buff, o)) {
|
||||
/* format error with correct decimal point: no more options */
|
||||
buffreplace(ls, ls->decpoint, '.'); /* undo change (for error message) */
|
||||
lexerror(ls, "malformed number", TK_FLT);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* LUA_NUMBER */
|
||||
/*
|
||||
** this function is quite liberal in what it accepts, as 'luaO_str2num'
|
||||
** will reject ill-formed numerals.
|
||||
*/
|
||||
static int read_numeral (LexState *ls, SemInfo *seminfo) {
|
||||
TValue obj;
|
||||
const char *expo = "Ee";
|
||||
int first = ls->current;
|
||||
lua_assert(lisdigit(ls->current));
|
||||
save_and_next(ls);
|
||||
if (first == '0' && check_next2(ls, "xX")) /* hexadecimal? */
|
||||
expo = "Pp";
|
||||
for (;;) {
|
||||
if (check_next2(ls, expo)) /* exponent part? */
|
||||
check_next2(ls, "-+"); /* optional exponent sign */
|
||||
if (lisxdigit(ls->current))
|
||||
save_and_next(ls);
|
||||
else if (ls->current == '.')
|
||||
save_and_next(ls);
|
||||
else break;
|
||||
}
|
||||
save(ls, '\0');
|
||||
buffreplace(ls, '.', ls->decpoint); /* follow locale for decimal point */
|
||||
if (!buff2num(ls->buff, &obj)) /* format error? */
|
||||
trydecpoint(ls, &obj); /* try to update decimal point separator */
|
||||
if (ttisinteger(&obj)) {
|
||||
seminfo->i = ivalue(&obj);
|
||||
return TK_INT;
|
||||
}
|
||||
else {
|
||||
lua_assert(ttisfloat(&obj));
|
||||
seminfo->r = fltvalue(&obj);
|
||||
return TK_FLT;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** skip a sequence '[=*[' or ']=*]' and return its number of '='s or
|
||||
** -1 if sequence is malformed
|
||||
*/
|
||||
static int skip_sep (LexState *ls) {
|
||||
int count = 0;
|
||||
int s = ls->current;
|
||||
lua_assert(s == '[' || s == ']');
|
||||
save_and_next(ls);
|
||||
while (ls->current == '=') {
|
||||
save_and_next(ls);
|
||||
count++;
|
||||
}
|
||||
return (ls->current == s) ? count : (-count) - 1;
|
||||
}
|
||||
|
||||
|
||||
static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) {
|
||||
int line = ls->linenumber; /* initial line (for error message) */
|
||||
save_and_next(ls); /* skip 2nd '[' */
|
||||
if (currIsNewline(ls)) /* string starts with a newline? */
|
||||
inclinenumber(ls); /* skip it */
|
||||
for (;;) {
|
||||
switch (ls->current) {
|
||||
case EOZ: { /* error */
|
||||
const char *what = (seminfo ? "string" : "comment");
|
||||
const char *msg = luaO_pushfstring(ls->L,
|
||||
"unfinished long %s (starting at line %d)", what, line);
|
||||
lexerror(ls, msg, TK_EOS);
|
||||
break; /* to avoid warnings */
|
||||
}
|
||||
case ']': {
|
||||
if (skip_sep(ls) == sep) {
|
||||
save_and_next(ls); /* skip 2nd ']' */
|
||||
goto endloop;
|
||||
}
|
||||
break;
|
||||
}
|
||||
case '\n': case '\r': {
|
||||
save(ls, '\n');
|
||||
inclinenumber(ls);
|
||||
if (!seminfo) luaZ_resetbuffer(ls->buff); /* avoid wasting space */
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
if (seminfo) save_and_next(ls);
|
||||
else next(ls);
|
||||
}
|
||||
}
|
||||
} endloop:
|
||||
if (seminfo)
|
||||
seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + (2 + sep),
|
||||
luaZ_bufflen(ls->buff) - 2*(2 + sep));
|
||||
}
|
||||
|
||||
|
||||
static void esccheck (LexState *ls, int c, const char *msg) {
|
||||
if (!c) {
|
||||
if (ls->current != EOZ)
|
||||
save_and_next(ls); /* add current to buffer for error message */
|
||||
lexerror(ls, msg, TK_STRING);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int gethexa (LexState *ls) {
|
||||
save_and_next(ls);
|
||||
esccheck (ls, lisxdigit(ls->current), "hexadecimal digit expected");
|
||||
return luaO_hexavalue(ls->current);
|
||||
}
|
||||
|
||||
|
||||
static int readhexaesc (LexState *ls) {
|
||||
int r = gethexa(ls);
|
||||
r = (r << 4) + gethexa(ls);
|
||||
luaZ_buffremove(ls->buff, 2); /* remove saved chars from buffer */
|
||||
return r;
|
||||
}
|
||||
|
||||
|
||||
static unsigned long readutf8esc (LexState *ls) {
|
||||
unsigned long r;
|
||||
int i = 4; /* chars to be removed: '\', 'u', '{', and first digit */
|
||||
save_and_next(ls); /* skip 'u' */
|
||||
esccheck(ls, ls->current == '{', "missing '{'");
|
||||
r = gethexa(ls); /* must have at least one digit */
|
||||
while ((save_and_next(ls), lisxdigit(ls->current))) {
|
||||
i++;
|
||||
r = (r << 4) + luaO_hexavalue(ls->current);
|
||||
esccheck(ls, r <= 0x10FFFF, "UTF-8 value too large");
|
||||
}
|
||||
esccheck(ls, ls->current == '}', "missing '}'");
|
||||
next(ls); /* skip '}' */
|
||||
luaZ_buffremove(ls->buff, i); /* remove saved chars from buffer */
|
||||
return r;
|
||||
}
|
||||
|
||||
|
||||
static void utf8esc (LexState *ls) {
|
||||
char buff[UTF8BUFFSZ];
|
||||
int n = luaO_utf8esc(buff, readutf8esc(ls));
|
||||
for (; n > 0; n--) /* add 'buff' to string */
|
||||
save(ls, buff[UTF8BUFFSZ - n]);
|
||||
}
|
||||
|
||||
|
||||
static int readdecesc (LexState *ls) {
|
||||
int i;
|
||||
int r = 0; /* result accumulator */
|
||||
for (i = 0; i < 3 && lisdigit(ls->current); i++) { /* read up to 3 digits */
|
||||
r = 10*r + ls->current - '0';
|
||||
save_and_next(ls);
|
||||
}
|
||||
esccheck(ls, r <= UCHAR_MAX, "decimal escape too large");
|
||||
luaZ_buffremove(ls->buff, i); /* remove read digits from buffer */
|
||||
return r;
|
||||
}
|
||||
|
||||
|
||||
static void read_string (LexState *ls, int del, SemInfo *seminfo) {
|
||||
save_and_next(ls); /* keep delimiter (for error messages) */
|
||||
while (ls->current != del) {
|
||||
switch (ls->current) {
|
||||
case EOZ:
|
||||
lexerror(ls, "unfinished string", TK_EOS);
|
||||
break; /* to avoid warnings */
|
||||
case '\n':
|
||||
case '\r':
|
||||
lexerror(ls, "unfinished string", TK_STRING);
|
||||
break; /* to avoid warnings */
|
||||
case '\\': { /* escape sequences */
|
||||
int c; /* final character to be saved */
|
||||
save_and_next(ls); /* keep '\\' for error messages */
|
||||
switch (ls->current) {
|
||||
case 'a': c = '\a'; goto read_save;
|
||||
case 'b': c = '\b'; goto read_save;
|
||||
case 'f': c = '\f'; goto read_save;
|
||||
case 'n': c = '\n'; goto read_save;
|
||||
case 'r': c = '\r'; goto read_save;
|
||||
case 't': c = '\t'; goto read_save;
|
||||
case 'v': c = '\v'; goto read_save;
|
||||
case 'x': c = readhexaesc(ls); goto read_save;
|
||||
case 'u': utf8esc(ls); goto no_save;
|
||||
case '\n': case '\r':
|
||||
inclinenumber(ls); c = '\n'; goto only_save;
|
||||
case '\\': case '\"': case '\'':
|
||||
c = ls->current; goto read_save;
|
||||
case EOZ: goto no_save; /* will raise an error next loop */
|
||||
case 'z': { /* zap following span of spaces */
|
||||
luaZ_buffremove(ls->buff, 1); /* remove '\\' */
|
||||
next(ls); /* skip the 'z' */
|
||||
while (lisspace(ls->current)) {
|
||||
if (currIsNewline(ls)) inclinenumber(ls);
|
||||
else next(ls);
|
||||
}
|
||||
goto no_save;
|
||||
}
|
||||
default: {
|
||||
esccheck(ls, lisdigit(ls->current), "invalid escape sequence");
|
||||
c = readdecesc(ls); /* digital escape '\ddd' */
|
||||
goto only_save;
|
||||
}
|
||||
}
|
||||
read_save:
|
||||
next(ls);
|
||||
/* go through */
|
||||
only_save:
|
||||
luaZ_buffremove(ls->buff, 1); /* remove '\\' */
|
||||
save(ls, c);
|
||||
/* go through */
|
||||
no_save: break;
|
||||
}
|
||||
default:
|
||||
save_and_next(ls);
|
||||
}
|
||||
}
|
||||
save_and_next(ls); /* skip delimiter */
|
||||
seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + 1,
|
||||
luaZ_bufflen(ls->buff) - 2);
|
||||
}
|
||||
|
||||
|
||||
static int llex (LexState *ls, SemInfo *seminfo) {
|
||||
luaZ_resetbuffer(ls->buff);
|
||||
for (;;) {
|
||||
switch (ls->current) {
|
||||
case '\n': case '\r': { /* line breaks */
|
||||
inclinenumber(ls);
|
||||
break;
|
||||
}
|
||||
case ' ': case '\f': case '\t': case '\v': { /* spaces */
|
||||
next(ls);
|
||||
break;
|
||||
}
|
||||
case '-': { /* '-' or '--' (comment) */
|
||||
next(ls);
|
||||
if (ls->current != '-') return '-';
|
||||
/* else is a comment */
|
||||
next(ls);
|
||||
if (ls->current == '[') { /* long comment? */
|
||||
int sep = skip_sep(ls);
|
||||
luaZ_resetbuffer(ls->buff); /* 'skip_sep' may dirty the buffer */
|
||||
if (sep >= 0) {
|
||||
read_long_string(ls, NULL, sep); /* skip long comment */
|
||||
luaZ_resetbuffer(ls->buff); /* previous call may dirty the buff. */
|
||||
break;
|
||||
}
|
||||
}
|
||||
/* else short comment */
|
||||
while (!currIsNewline(ls) && ls->current != EOZ)
|
||||
next(ls); /* skip until end of line (or end of file) */
|
||||
break;
|
||||
}
|
||||
case '[': { /* long string or simply '[' */
|
||||
int sep = skip_sep(ls);
|
||||
if (sep >= 0) {
|
||||
read_long_string(ls, seminfo, sep);
|
||||
return TK_STRING;
|
||||
}
|
||||
else if (sep == -1) return '[';
|
||||
else lexerror(ls, "invalid long string delimiter", TK_STRING);
|
||||
}
|
||||
case '=': {
|
||||
next(ls);
|
||||
if (check_next1(ls, '=')) return TK_EQ;
|
||||
else return '=';
|
||||
}
|
||||
case '<': {
|
||||
next(ls);
|
||||
if (check_next1(ls, '=')) return TK_LE;
|
||||
else if (check_next1(ls, '<')) return TK_SHL;
|
||||
else return '<';
|
||||
}
|
||||
case '>': {
|
||||
next(ls);
|
||||
if (check_next1(ls, '=')) return TK_GE;
|
||||
else if (check_next1(ls, '>')) return TK_SHR;
|
||||
else return '>';
|
||||
}
|
||||
case '/': {
|
||||
next(ls);
|
||||
if (check_next1(ls, '/')) return TK_IDIV;
|
||||
else return '/';
|
||||
}
|
||||
case '~': {
|
||||
next(ls);
|
||||
if (check_next1(ls, '=')) return TK_NE;
|
||||
else return '~';
|
||||
}
|
||||
case ':': {
|
||||
next(ls);
|
||||
if (check_next1(ls, ':')) return TK_DBCOLON;
|
||||
else return ':';
|
||||
}
|
||||
case '"': case '\'': { /* short literal strings */
|
||||
read_string(ls, ls->current, seminfo);
|
||||
return TK_STRING;
|
||||
}
|
||||
case '.': { /* '.', '..', '...', or number */
|
||||
save_and_next(ls);
|
||||
if (check_next1(ls, '.')) {
|
||||
if (check_next1(ls, '.'))
|
||||
return TK_DOTS; /* '...' */
|
||||
else return TK_CONCAT; /* '..' */
|
||||
}
|
||||
else if (!lisdigit(ls->current)) return '.';
|
||||
else return read_numeral(ls, seminfo);
|
||||
}
|
||||
case '0': case '1': case '2': case '3': case '4':
|
||||
case '5': case '6': case '7': case '8': case '9': {
|
||||
return read_numeral(ls, seminfo);
|
||||
}
|
||||
case EOZ: {
|
||||
return TK_EOS;
|
||||
}
|
||||
default: {
|
||||
if (lislalpha(ls->current)) { /* identifier or reserved word? */
|
||||
TString *ts;
|
||||
do {
|
||||
save_and_next(ls);
|
||||
} while (lislalnum(ls->current));
|
||||
ts = luaX_newstring(ls, luaZ_buffer(ls->buff),
|
||||
luaZ_bufflen(ls->buff));
|
||||
seminfo->ts = ts;
|
||||
if (isreserved(ts)) /* reserved word? */
|
||||
return ts->extra - 1 + FIRST_RESERVED;
|
||||
else {
|
||||
return TK_NAME;
|
||||
}
|
||||
}
|
||||
else { /* single-char tokens (+ - / ...) */
|
||||
int c = ls->current;
|
||||
next(ls);
|
||||
return c;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaX_next (LexState *ls) {
|
||||
ls->lastline = ls->linenumber;
|
||||
if (ls->lookahead.token != TK_EOS) { /* is there a look-ahead token? */
|
||||
ls->t = ls->lookahead; /* use this one */
|
||||
ls->lookahead.token = TK_EOS; /* and discharge it */
|
||||
}
|
||||
else
|
||||
ls->t.token = llex(ls, &ls->t.seminfo); /* read next token */
|
||||
}
|
||||
|
||||
|
||||
int luaX_lookahead (LexState *ls) {
|
||||
lua_assert(ls->lookahead.token == TK_EOS);
|
||||
ls->lookahead.token = llex(ls, &ls->lookahead.seminfo);
|
||||
return ls->lookahead.token;
|
||||
}
|
||||
|
||||
@ -0,0 +1,402 @@
|
||||
/*
|
||||
** $Id: lmathlib.c,v 1.113 2014/11/07 11:31:58 roberto Exp $
|
||||
** Standard mathematical library
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lmathlib_c
|
||||
#define LUA_LIB
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <math.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lauxlib.h"
|
||||
#include "lualib.h"
|
||||
|
||||
|
||||
#undef PI
|
||||
#define PI (l_mathop(3.141592653589793238462643383279502884))
|
||||
|
||||
|
||||
#if !defined(l_rand) /* { */
|
||||
#if defined(LUA_USE_POSIX)
|
||||
#define l_rand() random()
|
||||
#define l_srand(x) srandom(x)
|
||||
#else
|
||||
#define l_rand() rand()
|
||||
#define l_srand(x) srand(x)
|
||||
#endif
|
||||
#endif /* } */
|
||||
|
||||
|
||||
static int math_abs (lua_State *L) {
|
||||
if (lua_isinteger(L, 1)) {
|
||||
lua_Integer n = lua_tointeger(L, 1);
|
||||
if (n < 0) n = (lua_Integer)(0u - n);
|
||||
lua_pushinteger(L, n);
|
||||
}
|
||||
else
|
||||
lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_sin (lua_State *L) {
|
||||
lua_pushnumber(L, l_mathop(sin)(luaL_checknumber(L, 1)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_cos (lua_State *L) {
|
||||
lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_tan (lua_State *L) {
|
||||
lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_asin (lua_State *L) {
|
||||
lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_acos (lua_State *L) {
|
||||
lua_pushnumber(L, l_mathop(acos)(luaL_checknumber(L, 1)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_atan (lua_State *L) {
|
||||
lua_Number y = luaL_checknumber(L, 1);
|
||||
lua_Number x = luaL_optnumber(L, 2, 1);
|
||||
lua_pushnumber(L, l_mathop(atan2)(y, x));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int math_toint (lua_State *L) {
|
||||
int valid;
|
||||
lua_Integer n = lua_tointegerx(L, 1, &valid);
|
||||
if (valid)
|
||||
lua_pushinteger(L, n);
|
||||
else {
|
||||
luaL_checkany(L, 1);
|
||||
lua_pushnil(L); /* value is not convertible to integer */
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static void pushnumint (lua_State *L, lua_Number d) {
|
||||
lua_Integer n;
|
||||
if (lua_numbertointeger(d, &n)) /* does 'd' fit in an integer? */
|
||||
lua_pushinteger(L, n); /* result is integer */
|
||||
else
|
||||
lua_pushnumber(L, d); /* result is float */
|
||||
}
|
||||
|
||||
|
||||
static int math_floor (lua_State *L) {
|
||||
if (lua_isinteger(L, 1))
|
||||
lua_settop(L, 1); /* integer is its own floor */
|
||||
else {
|
||||
lua_Number d = l_mathop(floor)(luaL_checknumber(L, 1));
|
||||
pushnumint(L, d);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int math_ceil (lua_State *L) {
|
||||
if (lua_isinteger(L, 1))
|
||||
lua_settop(L, 1); /* integer is its own ceil */
|
||||
else {
|
||||
lua_Number d = l_mathop(ceil)(luaL_checknumber(L, 1));
|
||||
pushnumint(L, d);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int math_fmod (lua_State *L) {
|
||||
if (lua_isinteger(L, 1) && lua_isinteger(L, 2)) {
|
||||
lua_Integer d = lua_tointeger(L, 2);
|
||||
if ((lua_Unsigned)d + 1u <= 1u) { /* special cases: -1 or 0 */
|
||||
luaL_argcheck(L, d != 0, 2, "zero");
|
||||
lua_pushinteger(L, 0); /* avoid overflow with 0x80000... / -1 */
|
||||
}
|
||||
else
|
||||
lua_pushinteger(L, lua_tointeger(L, 1) % d);
|
||||
}
|
||||
else
|
||||
lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1),
|
||||
luaL_checknumber(L, 2)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** next function does not use 'modf', avoiding problems with 'double*'
|
||||
** (which is not compatible with 'float*') when lua_Number is not
|
||||
** 'double'.
|
||||
*/
|
||||
static int math_modf (lua_State *L) {
|
||||
if (lua_isinteger(L ,1)) {
|
||||
lua_settop(L, 1); /* number is its own integer part */
|
||||
lua_pushnumber(L, 0); /* no fractional part */
|
||||
}
|
||||
else {
|
||||
lua_Number n = luaL_checknumber(L, 1);
|
||||
/* integer part (rounds toward zero) */
|
||||
lua_Number ip = (n < 0) ? l_mathop(ceil)(n) : l_mathop(floor)(n);
|
||||
pushnumint(L, ip);
|
||||
/* fractional part (test needed for inf/-inf) */
|
||||
lua_pushnumber(L, (n == ip) ? l_mathop(0.0) : (n - ip));
|
||||
}
|
||||
return 2;
|
||||
}
|
||||
|
||||
|
||||
static int math_sqrt (lua_State *L) {
|
||||
lua_pushnumber(L, l_mathop(sqrt)(luaL_checknumber(L, 1)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int math_ult (lua_State *L) {
|
||||
lua_Integer a = luaL_checkinteger(L, 1);
|
||||
lua_Integer b = luaL_checkinteger(L, 2);
|
||||
lua_pushboolean(L, (lua_Unsigned)a < (lua_Unsigned)b);
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_log (lua_State *L) {
|
||||
lua_Number x = luaL_checknumber(L, 1);
|
||||
lua_Number res;
|
||||
if (lua_isnoneornil(L, 2))
|
||||
res = l_mathop(log)(x);
|
||||
else {
|
||||
lua_Number base = luaL_checknumber(L, 2);
|
||||
if (base == 10.0) res = l_mathop(log10)(x);
|
||||
else res = l_mathop(log)(x)/l_mathop(log)(base);
|
||||
}
|
||||
lua_pushnumber(L, res);
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_exp (lua_State *L) {
|
||||
lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_deg (lua_State *L) {
|
||||
lua_pushnumber(L, luaL_checknumber(L, 1) * (l_mathop(180.0) / PI));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_rad (lua_State *L) {
|
||||
lua_pushnumber(L, luaL_checknumber(L, 1) * (PI / l_mathop(180.0)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int math_min (lua_State *L) {
|
||||
int n = lua_gettop(L); /* number of arguments */
|
||||
int imin = 1; /* index of current minimum value */
|
||||
int i;
|
||||
luaL_argcheck(L, n >= 1, 1, "value expected");
|
||||
for (i = 2; i <= n; i++) {
|
||||
if (lua_compare(L, i, imin, LUA_OPLT))
|
||||
imin = i;
|
||||
}
|
||||
lua_pushvalue(L, imin);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int math_max (lua_State *L) {
|
||||
int n = lua_gettop(L); /* number of arguments */
|
||||
int imax = 1; /* index of current maximum value */
|
||||
int i;
|
||||
luaL_argcheck(L, n >= 1, 1, "value expected");
|
||||
for (i = 2; i <= n; i++) {
|
||||
if (lua_compare(L, imax, i, LUA_OPLT))
|
||||
imax = i;
|
||||
}
|
||||
lua_pushvalue(L, imax);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/*
|
||||
** This function uses 'double' (instead of 'lua_Number') to ensure that
|
||||
** all bits from 'l_rand' can be represented, and that 'RAND_MAX + 1.0'
|
||||
** will keep full precision (ensuring that 'r' is always less than 1.0.)
|
||||
*/
|
||||
static int math_random (lua_State *L) {
|
||||
lua_Integer low, up;
|
||||
double r = (double)l_rand() * (1.0 / ((double)RAND_MAX + 1.0));
|
||||
switch (lua_gettop(L)) { /* check number of arguments */
|
||||
case 0: { /* no arguments */
|
||||
lua_pushnumber(L, (lua_Number)r); /* Number between 0 and 1 */
|
||||
return 1;
|
||||
}
|
||||
case 1: { /* only upper limit */
|
||||
low = 1;
|
||||
up = luaL_checkinteger(L, 1);
|
||||
break;
|
||||
}
|
||||
case 2: { /* lower and upper limits */
|
||||
low = luaL_checkinteger(L, 1);
|
||||
up = luaL_checkinteger(L, 2);
|
||||
break;
|
||||
}
|
||||
default: return luaL_error(L, "wrong number of arguments");
|
||||
}
|
||||
/* random integer in the interval [low, up] */
|
||||
luaL_argcheck(L, low <= up, 1, "interval is empty");
|
||||
luaL_argcheck(L, low >= 0 || up <= LUA_MAXINTEGER + low, 1,
|
||||
"interval too large");
|
||||
r *= (double)(up - low) + 1.0;
|
||||
lua_pushinteger(L, (lua_Integer)r + low);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int math_randomseed (lua_State *L) {
|
||||
l_srand((unsigned int)(lua_Integer)luaL_checknumber(L, 1));
|
||||
(void)rand(); /* discard first value to avoid undesirable correlations */
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int math_type (lua_State *L) {
|
||||
if (lua_type(L, 1) == LUA_TNUMBER) {
|
||||
if (lua_isinteger(L, 1))
|
||||
lua_pushliteral(L, "integer");
|
||||
else
|
||||
lua_pushliteral(L, "float");
|
||||
}
|
||||
else {
|
||||
luaL_checkany(L, 1);
|
||||
lua_pushnil(L);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** {==================================================================
|
||||
** Deprecated functions (for compatibility only)
|
||||
** ===================================================================
|
||||
*/
|
||||
#if defined(LUA_COMPAT_MATHLIB)
|
||||
|
||||
static int math_cosh (lua_State *L) {
|
||||
lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_sinh (lua_State *L) {
|
||||
lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_tanh (lua_State *L) {
|
||||
lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_pow (lua_State *L) {
|
||||
lua_Number x = luaL_checknumber(L, 1);
|
||||
lua_Number y = luaL_checknumber(L, 2);
|
||||
lua_pushnumber(L, l_mathop(pow)(x, y));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_frexp (lua_State *L) {
|
||||
int e;
|
||||
lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e));
|
||||
lua_pushinteger(L, e);
|
||||
return 2;
|
||||
}
|
||||
|
||||
static int math_ldexp (lua_State *L) {
|
||||
lua_Number x = luaL_checknumber(L, 1);
|
||||
int ep = (int)luaL_checkinteger(L, 2);
|
||||
lua_pushnumber(L, l_mathop(ldexp)(x, ep));
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int math_log10 (lua_State *L) {
|
||||
lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1)));
|
||||
return 1;
|
||||
}
|
||||
|
||||
#endif
|
||||
/* }================================================================== */
|
||||
|
||||
|
||||
|
||||
static const luaL_Reg mathlib[] = {
|
||||
{"abs", math_abs},
|
||||
{"acos", math_acos},
|
||||
{"asin", math_asin},
|
||||
{"atan", math_atan},
|
||||
{"ceil", math_ceil},
|
||||
{"cos", math_cos},
|
||||
{"deg", math_deg},
|
||||
{"exp", math_exp},
|
||||
{"tointeger", math_toint},
|
||||
{"floor", math_floor},
|
||||
{"fmod", math_fmod},
|
||||
{"ult", math_ult},
|
||||
{"log", math_log},
|
||||
{"max", math_max},
|
||||
{"min", math_min},
|
||||
{"modf", math_modf},
|
||||
{"rad", math_rad},
|
||||
{"random", math_random},
|
||||
{"randomseed", math_randomseed},
|
||||
{"sin", math_sin},
|
||||
{"sqrt", math_sqrt},
|
||||
{"tan", math_tan},
|
||||
{"type", math_type},
|
||||
#if defined(LUA_COMPAT_MATHLIB)
|
||||
{"atan2", math_atan},
|
||||
{"cosh", math_cosh},
|
||||
{"sinh", math_sinh},
|
||||
{"tanh", math_tanh},
|
||||
{"pow", math_pow},
|
||||
{"frexp", math_frexp},
|
||||
{"ldexp", math_ldexp},
|
||||
{"log10", math_log10},
|
||||
#endif
|
||||
/* placeholders */
|
||||
{"pi", NULL},
|
||||
{"huge", NULL},
|
||||
{"maxinteger", NULL},
|
||||
{"mininteger", NULL},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
** Open math library
|
||||
*/
|
||||
LUAMOD_API int luaopen_math (lua_State *L) {
|
||||
luaL_newlib(L, mathlib);
|
||||
lua_pushnumber(L, PI);
|
||||
lua_setfield(L, -2, "pi");
|
||||
lua_pushnumber(L, (lua_Number)HUGE_VAL);
|
||||
lua_setfield(L, -2, "huge");
|
||||
lua_pushinteger(L, LUA_MAXINTEGER);
|
||||
lua_setfield(L, -2, "maxinteger");
|
||||
lua_pushinteger(L, LUA_MININTEGER);
|
||||
lua_setfield(L, -2, "mininteger");
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -0,0 +1,99 @@
|
||||
/*
|
||||
** $Id: lmem.c,v 1.89 2014/11/02 19:33:33 roberto Exp $
|
||||
** Interface to Memory Manager
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lmem_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <stddef.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "ldebug.h"
|
||||
#include "ldo.h"
|
||||
#include "lgc.h"
|
||||
#include "lmem.h"
|
||||
#include "lobject.h"
|
||||
#include "lstate.h"
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** About the realloc function:
|
||||
** void * frealloc (void *ud, void *ptr, size_t osize, size_t nsize);
|
||||
** ('osize' is the old size, 'nsize' is the new size)
|
||||
**
|
||||
** * frealloc(ud, NULL, x, s) creates a new block of size 's' (no
|
||||
** matter 'x').
|
||||
**
|
||||
** * frealloc(ud, p, x, 0) frees the block 'p'
|
||||
** (in this specific case, frealloc must return NULL);
|
||||
** particularly, frealloc(ud, NULL, 0, 0) does nothing
|
||||
** (which is equivalent to free(NULL) in ISO C)
|
||||
**
|
||||
** frealloc returns NULL if it cannot create or reallocate the area
|
||||
** (any reallocation to an equal or smaller size cannot fail!)
|
||||
*/
|
||||
|
||||
|
||||
|
||||
#define MINSIZEARRAY 4
|
||||
|
||||
|
||||
void *luaM_growaux_ (lua_State *L, void *block, int *size, size_t size_elems,
|
||||
int limit, const char *what) {
|
||||
void *newblock;
|
||||
int newsize;
|
||||
if (*size >= limit/2) { /* cannot double it? */
|
||||
if (*size >= limit) /* cannot grow even a little? */
|
||||
luaG_runerror(L, "too many %s (limit is %d)", what, limit);
|
||||
newsize = limit; /* still have at least one free place */
|
||||
}
|
||||
else {
|
||||
newsize = (*size)*2;
|
||||
if (newsize < MINSIZEARRAY)
|
||||
newsize = MINSIZEARRAY; /* minimum size */
|
||||
}
|
||||
newblock = luaM_reallocv(L, block, *size, newsize, size_elems);
|
||||
*size = newsize; /* update only when everything else is OK */
|
||||
return newblock;
|
||||
}
|
||||
|
||||
|
||||
l_noret luaM_toobig (lua_State *L) {
|
||||
luaG_runerror(L, "memory allocation error: block too big");
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** generic allocation routine.
|
||||
*/
|
||||
void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) {
|
||||
void *newblock;
|
||||
global_State *g = G(L);
|
||||
size_t realosize = (block) ? osize : 0;
|
||||
lua_assert((realosize == 0) == (block == NULL));
|
||||
#if defined(HARDMEMTESTS)
|
||||
if (nsize > realosize && g->gcrunning)
|
||||
luaC_fullgc(L, 1); /* force a GC whenever possible */
|
||||
#endif
|
||||
newblock = (*g->frealloc)(g->ud, block, osize, nsize);
|
||||
if (newblock == NULL && nsize > 0) {
|
||||
api_check( nsize > realosize,
|
||||
"realloc cannot fail when shrinking a block");
|
||||
luaC_fullgc(L, 1); /* try to free some memory... */
|
||||
newblock = (*g->frealloc)(g->ud, block, osize, nsize); /* try again */
|
||||
if (newblock == NULL)
|
||||
luaD_throw(L, LUA_ERRMEM);
|
||||
}
|
||||
lua_assert((nsize == 0) == (newblock == NULL));
|
||||
g->GCdebt = (g->GCdebt + nsize) - realosize;
|
||||
return newblock;
|
||||
}
|
||||
|
||||
@ -0,0 +1,774 @@
|
||||
/*
|
||||
** $Id: loadlib.c,v 1.123 2014/11/12 13:31:51 roberto Exp $
|
||||
** Dynamic library loader for Lua
|
||||
** See Copyright Notice in lua.h
|
||||
**
|
||||
** This module contains an implementation of loadlib for Unix systems
|
||||
** that have dlfcn, an implementation for Windows, and a stub for other
|
||||
** systems.
|
||||
*/
|
||||
|
||||
#define loadlib_c
|
||||
#define LUA_LIB
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lauxlib.h"
|
||||
#include "lualib.h"
|
||||
|
||||
|
||||
/*
|
||||
** LUA_PATH_VAR and LUA_CPATH_VAR are the names of the environment
|
||||
** variables that Lua check to set its paths.
|
||||
*/
|
||||
#if !defined(LUA_PATH_VAR)
|
||||
#define LUA_PATH_VAR "LUA_PATH"
|
||||
#endif
|
||||
|
||||
#if !defined(LUA_CPATH_VAR)
|
||||
#define LUA_CPATH_VAR "LUA_CPATH"
|
||||
#endif
|
||||
|
||||
#define LUA_PATHSUFFIX "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
|
||||
|
||||
#define LUA_PATHVARVERSION LUA_PATH_VAR LUA_PATHSUFFIX
|
||||
#define LUA_CPATHVARVERSION LUA_CPATH_VAR LUA_PATHSUFFIX
|
||||
|
||||
/*
|
||||
** LUA_PATH_SEP is the character that separates templates in a path.
|
||||
** LUA_PATH_MARK is the string that marks the substitution points in a
|
||||
** template.
|
||||
** LUA_EXEC_DIR in a Windows path is replaced by the executable's
|
||||
** directory.
|
||||
** LUA_IGMARK is a mark to ignore all before it when building the
|
||||
** luaopen_ function name.
|
||||
*/
|
||||
#if !defined (LUA_PATH_SEP)
|
||||
#define LUA_PATH_SEP ";"
|
||||
#endif
|
||||
#if !defined (LUA_PATH_MARK)
|
||||
#define LUA_PATH_MARK "?"
|
||||
#endif
|
||||
#if !defined (LUA_EXEC_DIR)
|
||||
#define LUA_EXEC_DIR "!"
|
||||
#endif
|
||||
#if !defined (LUA_IGMARK)
|
||||
#define LUA_IGMARK "-"
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** LUA_CSUBSEP is the character that replaces dots in submodule names
|
||||
** when searching for a C loader.
|
||||
** LUA_LSUBSEP is the character that replaces dots in submodule names
|
||||
** when searching for a Lua loader.
|
||||
*/
|
||||
#if !defined(LUA_CSUBSEP)
|
||||
#define LUA_CSUBSEP LUA_DIRSEP
|
||||
#endif
|
||||
|
||||
#if !defined(LUA_LSUBSEP)
|
||||
#define LUA_LSUBSEP LUA_DIRSEP
|
||||
#endif
|
||||
|
||||
|
||||
/* prefix for open functions in C libraries */
|
||||
#define LUA_POF "luaopen_"
|
||||
|
||||
/* separator for open functions in C libraries */
|
||||
#define LUA_OFSEP "_"
|
||||
|
||||
|
||||
/*
|
||||
** unique key for table in the registry that keeps handles
|
||||
** for all loaded C libraries
|
||||
*/
|
||||
static const int CLIBS = 0;
|
||||
|
||||
#define LIB_FAIL "open"
|
||||
|
||||
#define setprogdir(L) ((void)0)
|
||||
|
||||
|
||||
/*
|
||||
** system-dependent functions
|
||||
*/
|
||||
|
||||
/*
|
||||
** unload library 'lib'
|
||||
*/
|
||||
static void lsys_unloadlib (void *lib);
|
||||
|
||||
/*
|
||||
** load C library in file 'path'. If 'seeglb', load with all names in
|
||||
** the library global.
|
||||
** Returns the library; in case of error, returns NULL plus an
|
||||
** error string in the stack.
|
||||
*/
|
||||
static void *lsys_load (lua_State *L, const char *path, int seeglb);
|
||||
|
||||
/*
|
||||
** Try to find a function named 'sym' in library 'lib'.
|
||||
** Returns the function; in case of error, returns NULL plus an
|
||||
** error string in the stack.
|
||||
*/
|
||||
static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym);
|
||||
|
||||
|
||||
|
||||
|
||||
#if defined(LUA_USE_DLOPEN) /* { */
|
||||
/*
|
||||
** {========================================================================
|
||||
** This is an implementation of loadlib based on the dlfcn interface.
|
||||
** The dlfcn interface is available in Linux, SunOS, Solaris, IRIX, FreeBSD,
|
||||
** NetBSD, AIX 4.2, HPUX 11, and probably most other Unix flavors, at least
|
||||
** as an emulation layer on top of native functions.
|
||||
** =========================================================================
|
||||
*/
|
||||
|
||||
#include <dlfcn.h>
|
||||
|
||||
static void lsys_unloadlib (void *lib) {
|
||||
dlclose(lib);
|
||||
}
|
||||
|
||||
|
||||
static void *lsys_load (lua_State *L, const char *path, int seeglb) {
|
||||
void *lib = dlopen(path, RTLD_NOW | (seeglb ? RTLD_GLOBAL : RTLD_LOCAL));
|
||||
if (lib == NULL) lua_pushstring(L, dlerror());
|
||||
return lib;
|
||||
}
|
||||
|
||||
|
||||
static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
|
||||
lua_CFunction f = (lua_CFunction)dlsym(lib, sym);
|
||||
if (f == NULL) lua_pushstring(L, dlerror());
|
||||
return f;
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
|
||||
#elif defined(LUA_DL_DLL) /* }{ */
|
||||
/*
|
||||
** {======================================================================
|
||||
** This is an implementation of loadlib for Windows using native functions.
|
||||
** =======================================================================
|
||||
*/
|
||||
|
||||
#include <windows.h>
|
||||
|
||||
#undef setprogdir
|
||||
|
||||
/*
|
||||
** optional flags for LoadLibraryEx
|
||||
*/
|
||||
#if !defined(LUA_LLE_FLAGS)
|
||||
#define LUA_LLE_FLAGS 0
|
||||
#endif
|
||||
|
||||
|
||||
static void setprogdir (lua_State *L) {
|
||||
char buff[MAX_PATH + 1];
|
||||
char *lb;
|
||||
DWORD nsize = sizeof(buff)/sizeof(char);
|
||||
DWORD n = GetModuleFileNameA(NULL, buff, nsize);
|
||||
if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL)
|
||||
luaL_error(L, "unable to get ModuleFileName");
|
||||
else {
|
||||
*lb = '\0';
|
||||
luaL_gsub(L, lua_tostring(L, -1), LUA_EXEC_DIR, buff);
|
||||
lua_remove(L, -2); /* remove original string */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void pusherror (lua_State *L) {
|
||||
int error = GetLastError();
|
||||
char buffer[128];
|
||||
if (FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
|
||||
NULL, error, 0, buffer, sizeof(buffer)/sizeof(char), NULL))
|
||||
lua_pushstring(L, buffer);
|
||||
else
|
||||
lua_pushfstring(L, "system error %d\n", error);
|
||||
}
|
||||
|
||||
static void lsys_unloadlib (void *lib) {
|
||||
FreeLibrary((HMODULE)lib);
|
||||
}
|
||||
|
||||
|
||||
static void *lsys_load (lua_State *L, const char *path, int seeglb) {
|
||||
HMODULE lib = LoadLibraryExA(path, NULL, LUA_LLE_FLAGS);
|
||||
(void)(seeglb); /* not used: symbols are 'global' by default */
|
||||
if (lib == NULL) pusherror(L);
|
||||
return lib;
|
||||
}
|
||||
|
||||
|
||||
static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
|
||||
lua_CFunction f = (lua_CFunction)GetProcAddress((HMODULE)lib, sym);
|
||||
if (f == NULL) pusherror(L);
|
||||
return f;
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
#else /* }{ */
|
||||
/*
|
||||
** {======================================================
|
||||
** Fallback for other systems
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
#undef LIB_FAIL
|
||||
#define LIB_FAIL "absent"
|
||||
|
||||
|
||||
#define DLMSG "dynamic libraries not enabled; check your Lua installation"
|
||||
|
||||
|
||||
static void lsys_unloadlib (void *lib) {
|
||||
(void)(lib); /* not used */
|
||||
}
|
||||
|
||||
|
||||
static void *lsys_load (lua_State *L, const char *path, int seeglb) {
|
||||
(void)(path); (void)(seeglb); /* not used */
|
||||
lua_pushliteral(L, DLMSG);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
|
||||
(void)(lib); (void)(sym); /* not used */
|
||||
lua_pushliteral(L, DLMSG);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
#endif /* } */
|
||||
|
||||
|
||||
/*
|
||||
** return registry.CLIBS[path]
|
||||
*/
|
||||
static void *checkclib (lua_State *L, const char *path) {
|
||||
void *plib;
|
||||
lua_rawgetp(L, LUA_REGISTRYINDEX, &CLIBS);
|
||||
lua_getfield(L, -1, path);
|
||||
plib = lua_touserdata(L, -1); /* plib = CLIBS[path] */
|
||||
lua_pop(L, 2); /* pop CLIBS table and 'plib' */
|
||||
return plib;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** registry.CLIBS[path] = plib -- for queries
|
||||
** registry.CLIBS[#CLIBS + 1] = plib -- also keep a list of all libraries
|
||||
*/
|
||||
static void addtoclib (lua_State *L, const char *path, void *plib) {
|
||||
lua_rawgetp(L, LUA_REGISTRYINDEX, &CLIBS);
|
||||
lua_pushlightuserdata(L, plib);
|
||||
lua_pushvalue(L, -1);
|
||||
lua_setfield(L, -3, path); /* CLIBS[path] = plib */
|
||||
lua_rawseti(L, -2, luaL_len(L, -2) + 1); /* CLIBS[#CLIBS + 1] = plib */
|
||||
lua_pop(L, 1); /* pop CLIBS table */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** __gc tag method for CLIBS table: calls 'lsys_unloadlib' for all lib
|
||||
** handles in list CLIBS
|
||||
*/
|
||||
static int gctm (lua_State *L) {
|
||||
lua_Integer n = luaL_len(L, 1);
|
||||
for (; n >= 1; n--) { /* for each handle, in reverse order */
|
||||
lua_rawgeti(L, 1, n); /* get handle CLIBS[n] */
|
||||
lsys_unloadlib(lua_touserdata(L, -1));
|
||||
lua_pop(L, 1); /* pop handle */
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* error codes for 'lookforfunc' */
|
||||
#define ERRLIB 1
|
||||
#define ERRFUNC 2
|
||||
|
||||
/*
|
||||
** Look for a C function named 'sym' in a dynamically loaded library
|
||||
** 'path'.
|
||||
** First, check whether the library is already loaded; if not, try
|
||||
** to load it.
|
||||
** Then, if 'sym' is '*', return true (as library has been loaded).
|
||||
** Otherwise, look for symbol 'sym' in the library and push a
|
||||
** C function with that symbol.
|
||||
** Return 0 and 'true' or a function in the stack; in case of
|
||||
** errors, return an error code and an error message in the stack.
|
||||
*/
|
||||
static int lookforfunc (lua_State *L, const char *path, const char *sym) {
|
||||
void *reg = checkclib(L, path); /* check loaded C libraries */
|
||||
if (reg == NULL) { /* must load library? */
|
||||
reg = lsys_load(L, path, *sym == '*'); /* global symbols if 'sym'=='*' */
|
||||
if (reg == NULL) return ERRLIB; /* unable to load library */
|
||||
addtoclib(L, path, reg);
|
||||
}
|
||||
if (*sym == '*') { /* loading only library (no function)? */
|
||||
lua_pushboolean(L, 1); /* return 'true' */
|
||||
return 0; /* no errors */
|
||||
}
|
||||
else {
|
||||
lua_CFunction f = lsys_sym(L, reg, sym);
|
||||
if (f == NULL)
|
||||
return ERRFUNC; /* unable to find function */
|
||||
lua_pushcfunction(L, f); /* else create new function */
|
||||
return 0; /* no errors */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int ll_loadlib (lua_State *L) {
|
||||
const char *path = luaL_checkstring(L, 1);
|
||||
const char *init = luaL_checkstring(L, 2);
|
||||
int stat = lookforfunc(L, path, init);
|
||||
if (stat == 0) /* no errors? */
|
||||
return 1; /* return the loaded function */
|
||||
else { /* error; error message is on stack top */
|
||||
lua_pushnil(L);
|
||||
lua_insert(L, -2);
|
||||
lua_pushstring(L, (stat == ERRLIB) ? LIB_FAIL : "init");
|
||||
return 3; /* return nil, error message, and where */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** 'require' function
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
|
||||
static int readable (const char *filename) {
|
||||
FILE *f = fopen(filename, "r"); /* try to open file */
|
||||
if (f == NULL) return 0; /* open failed */
|
||||
fclose(f);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static const char *pushnexttemplate (lua_State *L, const char *path) {
|
||||
const char *l;
|
||||
while (*path == *LUA_PATH_SEP) path++; /* skip separators */
|
||||
if (*path == '\0') return NULL; /* no more templates */
|
||||
l = strchr(path, *LUA_PATH_SEP); /* find next separator */
|
||||
if (l == NULL) l = path + strlen(path);
|
||||
lua_pushlstring(L, path, l - path); /* template */
|
||||
return l;
|
||||
}
|
||||
|
||||
|
||||
static const char *searchpath (lua_State *L, const char *name,
|
||||
const char *path,
|
||||
const char *sep,
|
||||
const char *dirsep) {
|
||||
luaL_Buffer msg; /* to build error message */
|
||||
luaL_buffinit(L, &msg);
|
||||
if (*sep != '\0') /* non-empty separator? */
|
||||
name = luaL_gsub(L, name, sep, dirsep); /* replace it by 'dirsep' */
|
||||
while ((path = pushnexttemplate(L, path)) != NULL) {
|
||||
const char *filename = luaL_gsub(L, lua_tostring(L, -1),
|
||||
LUA_PATH_MARK, name);
|
||||
lua_remove(L, -2); /* remove path template */
|
||||
if (readable(filename)) /* does file exist and is readable? */
|
||||
return filename; /* return that file name */
|
||||
lua_pushfstring(L, "\n\tno file '%s'", filename);
|
||||
lua_remove(L, -2); /* remove file name */
|
||||
luaL_addvalue(&msg); /* concatenate error msg. entry */
|
||||
}
|
||||
luaL_pushresult(&msg); /* create error message */
|
||||
return NULL; /* not found */
|
||||
}
|
||||
|
||||
|
||||
static int ll_searchpath (lua_State *L) {
|
||||
const char *f = searchpath(L, luaL_checkstring(L, 1),
|
||||
luaL_checkstring(L, 2),
|
||||
luaL_optstring(L, 3, "."),
|
||||
luaL_optstring(L, 4, LUA_DIRSEP));
|
||||
if (f != NULL) return 1;
|
||||
else { /* error message is on top of the stack */
|
||||
lua_pushnil(L);
|
||||
lua_insert(L, -2);
|
||||
return 2; /* return nil + error message */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static const char *findfile (lua_State *L, const char *name,
|
||||
const char *pname,
|
||||
const char *dirsep) {
|
||||
const char *path;
|
||||
lua_getfield(L, lua_upvalueindex(1), pname);
|
||||
path = lua_tostring(L, -1);
|
||||
if (path == NULL)
|
||||
luaL_error(L, "'package.%s' must be a string", pname);
|
||||
return searchpath(L, name, path, ".", dirsep);
|
||||
}
|
||||
|
||||
|
||||
static int checkload (lua_State *L, int stat, const char *filename) {
|
||||
if (stat) { /* module loaded successfully? */
|
||||
lua_pushstring(L, filename); /* will be 2nd argument to module */
|
||||
return 2; /* return open function and file name */
|
||||
}
|
||||
else
|
||||
return luaL_error(L, "error loading module '%s' from file '%s':\n\t%s",
|
||||
lua_tostring(L, 1), filename, lua_tostring(L, -1));
|
||||
}
|
||||
|
||||
|
||||
static int searcher_Lua (lua_State *L) {
|
||||
const char *filename;
|
||||
const char *name = luaL_checkstring(L, 1);
|
||||
filename = findfile(L, name, "path", LUA_LSUBSEP);
|
||||
if (filename == NULL) return 1; /* module not found in this path */
|
||||
return checkload(L, (luaL_loadfile(L, filename) == LUA_OK), filename);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Try to find a load function for module 'modname' at file 'filename'.
|
||||
** First, change '.' to '_' in 'modname'; then, if 'modname' has
|
||||
** the form X-Y (that is, it has an "ignore mark"), build a function
|
||||
** name "luaopen_X" and look for it. (For compatibility, if that
|
||||
** fails, it also tries "luaopen_Y".) If there is no ignore mark,
|
||||
** look for a function named "luaopen_modname".
|
||||
*/
|
||||
static int loadfunc (lua_State *L, const char *filename, const char *modname) {
|
||||
const char *openfunc;
|
||||
const char *mark;
|
||||
modname = luaL_gsub(L, modname, ".", LUA_OFSEP);
|
||||
mark = strchr(modname, *LUA_IGMARK);
|
||||
if (mark) {
|
||||
int stat;
|
||||
openfunc = lua_pushlstring(L, modname, mark - modname);
|
||||
openfunc = lua_pushfstring(L, LUA_POF"%s", openfunc);
|
||||
stat = lookforfunc(L, filename, openfunc);
|
||||
if (stat != ERRFUNC) return stat;
|
||||
modname = mark + 1; /* else go ahead and try old-style name */
|
||||
}
|
||||
openfunc = lua_pushfstring(L, LUA_POF"%s", modname);
|
||||
return lookforfunc(L, filename, openfunc);
|
||||
}
|
||||
|
||||
|
||||
static int searcher_C (lua_State *L) {
|
||||
const char *name = luaL_checkstring(L, 1);
|
||||
const char *filename = findfile(L, name, "cpath", LUA_CSUBSEP);
|
||||
if (filename == NULL) return 1; /* module not found in this path */
|
||||
return checkload(L, (loadfunc(L, filename, name) == 0), filename);
|
||||
}
|
||||
|
||||
|
||||
static int searcher_Croot (lua_State *L) {
|
||||
const char *filename;
|
||||
const char *name = luaL_checkstring(L, 1);
|
||||
const char *p = strchr(name, '.');
|
||||
int stat;
|
||||
if (p == NULL) return 0; /* is root */
|
||||
lua_pushlstring(L, name, p - name);
|
||||
filename = findfile(L, lua_tostring(L, -1), "cpath", LUA_CSUBSEP);
|
||||
if (filename == NULL) return 1; /* root not found */
|
||||
if ((stat = loadfunc(L, filename, name)) != 0) {
|
||||
if (stat != ERRFUNC)
|
||||
return checkload(L, 0, filename); /* real error */
|
||||
else { /* open function not found */
|
||||
lua_pushfstring(L, "\n\tno module '%s' in file '%s'", name, filename);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
lua_pushstring(L, filename); /* will be 2nd argument to module */
|
||||
return 2;
|
||||
}
|
||||
|
||||
|
||||
static int searcher_preload (lua_State *L) {
|
||||
const char *name = luaL_checkstring(L, 1);
|
||||
lua_getfield(L, LUA_REGISTRYINDEX, "_PRELOAD");
|
||||
if (lua_getfield(L, -1, name) == LUA_TNIL) /* not found? */
|
||||
lua_pushfstring(L, "\n\tno field package.preload['%s']", name);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static void findloader (lua_State *L, const char *name) {
|
||||
int i;
|
||||
luaL_Buffer msg; /* to build error message */
|
||||
luaL_buffinit(L, &msg);
|
||||
/* push 'package.searchers' to index 3 in the stack */
|
||||
if (lua_getfield(L, lua_upvalueindex(1), "searchers") != LUA_TTABLE)
|
||||
luaL_error(L, "'package.searchers' must be a table");
|
||||
/* iterate over available searchers to find a loader */
|
||||
for (i = 1; ; i++) {
|
||||
if (lua_rawgeti(L, 3, i) == LUA_TNIL) { /* no more searchers? */
|
||||
lua_pop(L, 1); /* remove nil */
|
||||
luaL_pushresult(&msg); /* create error message */
|
||||
luaL_error(L, "module '%s' not found:%s", name, lua_tostring(L, -1));
|
||||
}
|
||||
lua_pushstring(L, name);
|
||||
lua_call(L, 1, 2); /* call it */
|
||||
if (lua_isfunction(L, -2)) /* did it find a loader? */
|
||||
return; /* module loader found */
|
||||
else if (lua_isstring(L, -2)) { /* searcher returned error message? */
|
||||
lua_pop(L, 1); /* remove extra return */
|
||||
luaL_addvalue(&msg); /* concatenate error message */
|
||||
}
|
||||
else
|
||||
lua_pop(L, 2); /* remove both returns */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int ll_require (lua_State *L) {
|
||||
const char *name = luaL_checkstring(L, 1);
|
||||
lua_settop(L, 1); /* _LOADED table will be at index 2 */
|
||||
lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");
|
||||
lua_getfield(L, 2, name); /* _LOADED[name] */
|
||||
if (lua_toboolean(L, -1)) /* is it there? */
|
||||
return 1; /* package is already loaded */
|
||||
/* else must load package */
|
||||
lua_pop(L, 1); /* remove 'getfield' result */
|
||||
findloader(L, name);
|
||||
lua_pushstring(L, name); /* pass name as argument to module loader */
|
||||
lua_insert(L, -2); /* name is 1st argument (before search data) */
|
||||
lua_call(L, 2, 1); /* run loader to load module */
|
||||
if (!lua_isnil(L, -1)) /* non-nil return? */
|
||||
lua_setfield(L, 2, name); /* _LOADED[name] = returned value */
|
||||
if (lua_getfield(L, 2, name) == LUA_TNIL) { /* module set no value? */
|
||||
lua_pushboolean(L, 1); /* use true as result */
|
||||
lua_pushvalue(L, -1); /* extra copy to be returned */
|
||||
lua_setfield(L, 2, name); /* _LOADED[name] = true */
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** 'module' function
|
||||
** =======================================================
|
||||
*/
|
||||
#if defined(LUA_COMPAT_MODULE)
|
||||
|
||||
/*
|
||||
** changes the environment variable of calling function
|
||||
*/
|
||||
static void set_env (lua_State *L) {
|
||||
lua_Debug ar;
|
||||
if (lua_getstack(L, 1, &ar) == 0 ||
|
||||
lua_getinfo(L, "f", &ar) == 0 || /* get calling function */
|
||||
lua_iscfunction(L, -1))
|
||||
luaL_error(L, "'module' not called from a Lua function");
|
||||
lua_pushvalue(L, -2); /* copy new environment table to top */
|
||||
lua_setupvalue(L, -2, 1);
|
||||
lua_pop(L, 1); /* remove function */
|
||||
}
|
||||
|
||||
|
||||
static void dooptions (lua_State *L, int n) {
|
||||
int i;
|
||||
for (i = 2; i <= n; i++) {
|
||||
if (lua_isfunction(L, i)) { /* avoid 'calling' extra info. */
|
||||
lua_pushvalue(L, i); /* get option (a function) */
|
||||
lua_pushvalue(L, -2); /* module */
|
||||
lua_call(L, 1, 0);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void modinit (lua_State *L, const char *modname) {
|
||||
const char *dot;
|
||||
lua_pushvalue(L, -1);
|
||||
lua_setfield(L, -2, "_M"); /* module._M = module */
|
||||
lua_pushstring(L, modname);
|
||||
lua_setfield(L, -2, "_NAME");
|
||||
dot = strrchr(modname, '.'); /* look for last dot in module name */
|
||||
if (dot == NULL) dot = modname;
|
||||
else dot++;
|
||||
/* set _PACKAGE as package name (full module name minus last part) */
|
||||
lua_pushlstring(L, modname, dot - modname);
|
||||
lua_setfield(L, -2, "_PACKAGE");
|
||||
}
|
||||
|
||||
|
||||
static int ll_module (lua_State *L) {
|
||||
const char *modname = luaL_checkstring(L, 1);
|
||||
int lastarg = lua_gettop(L); /* last parameter */
|
||||
luaL_pushmodule(L, modname, 1); /* get/create module table */
|
||||
/* check whether table already has a _NAME field */
|
||||
if (lua_getfield(L, -1, "_NAME") != LUA_TNIL)
|
||||
lua_pop(L, 1); /* table is an initialized module */
|
||||
else { /* no; initialize it */
|
||||
lua_pop(L, 1);
|
||||
modinit(L, modname);
|
||||
}
|
||||
lua_pushvalue(L, -1);
|
||||
set_env(L);
|
||||
dooptions(L, lastarg);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int ll_seeall (lua_State *L) {
|
||||
luaL_checktype(L, 1, LUA_TTABLE);
|
||||
if (!lua_getmetatable(L, 1)) {
|
||||
lua_createtable(L, 0, 1); /* create new metatable */
|
||||
lua_pushvalue(L, -1);
|
||||
lua_setmetatable(L, 1);
|
||||
}
|
||||
lua_pushglobaltable(L);
|
||||
lua_setfield(L, -2, "__index"); /* mt.__index = _G */
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
|
||||
/* auxiliary mark (for internal use) */
|
||||
#define AUXMARK "\1"
|
||||
|
||||
|
||||
/*
|
||||
** return registry.LUA_NOENV as a boolean
|
||||
*/
|
||||
static int noenv (lua_State *L) {
|
||||
int b;
|
||||
lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
|
||||
b = lua_toboolean(L, -1);
|
||||
lua_pop(L, 1); /* remove value */
|
||||
return b;
|
||||
}
|
||||
|
||||
|
||||
static void setpath (lua_State *L, const char *fieldname, const char *envname1,
|
||||
const char *envname2, const char *def) {
|
||||
const char *path = getenv(envname1);
|
||||
if (path == NULL) /* no environment variable? */
|
||||
path = getenv(envname2); /* try alternative name */
|
||||
if (path == NULL || noenv(L)) /* no environment variable? */
|
||||
lua_pushstring(L, def); /* use default */
|
||||
else {
|
||||
/* replace ";;" by ";AUXMARK;" and then AUXMARK by default path */
|
||||
path = luaL_gsub(L, path, LUA_PATH_SEP LUA_PATH_SEP,
|
||||
LUA_PATH_SEP AUXMARK LUA_PATH_SEP);
|
||||
luaL_gsub(L, path, AUXMARK, def);
|
||||
lua_remove(L, -2);
|
||||
}
|
||||
setprogdir(L);
|
||||
lua_setfield(L, -2, fieldname);
|
||||
}
|
||||
|
||||
|
||||
static const luaL_Reg pk_funcs[] = {
|
||||
{"loadlib", ll_loadlib},
|
||||
{"searchpath", ll_searchpath},
|
||||
#if defined(LUA_COMPAT_MODULE)
|
||||
{"seeall", ll_seeall},
|
||||
#endif
|
||||
/* placeholders */
|
||||
{"preload", NULL},
|
||||
{"cpath", NULL},
|
||||
{"path", NULL},
|
||||
{"searchers", NULL},
|
||||
{"loaded", NULL},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
static const luaL_Reg ll_funcs[] = {
|
||||
#if defined(LUA_COMPAT_MODULE)
|
||||
{"module", ll_module},
|
||||
#endif
|
||||
{"require", ll_require},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
static void createsearcherstable (lua_State *L) {
|
||||
static const lua_CFunction searchers[] =
|
||||
{searcher_preload, searcher_Lua, searcher_C, searcher_Croot, NULL};
|
||||
int i;
|
||||
/* create 'searchers' table */
|
||||
lua_createtable(L, sizeof(searchers)/sizeof(searchers[0]) - 1, 0);
|
||||
/* fill it with pre-defined searchers */
|
||||
for (i=0; searchers[i] != NULL; i++) {
|
||||
lua_pushvalue(L, -2); /* set 'package' as upvalue for all searchers */
|
||||
lua_pushcclosure(L, searchers[i], 1);
|
||||
lua_rawseti(L, -2, i+1);
|
||||
}
|
||||
#if defined(LUA_COMPAT_LOADERS)
|
||||
lua_pushvalue(L, -1); /* make a copy of 'searchers' table */
|
||||
lua_setfield(L, -3, "loaders"); /* put it in field 'loaders' */
|
||||
#endif
|
||||
lua_setfield(L, -2, "searchers"); /* put it in field 'searchers' */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** create table CLIBS to keep track of loaded C libraries,
|
||||
** setting a finalizer to close all libraries when closing state.
|
||||
*/
|
||||
static void createclibstable (lua_State *L) {
|
||||
lua_newtable(L); /* create CLIBS table */
|
||||
lua_createtable(L, 0, 1); /* create metatable for CLIBS */
|
||||
lua_pushcfunction(L, gctm);
|
||||
lua_setfield(L, -2, "__gc"); /* set finalizer for CLIBS table */
|
||||
lua_setmetatable(L, -2);
|
||||
lua_rawsetp(L, LUA_REGISTRYINDEX, &CLIBS); /* set CLIBS table in registry */
|
||||
}
|
||||
|
||||
|
||||
LUAMOD_API int luaopen_package (lua_State *L) {
|
||||
createclibstable(L);
|
||||
luaL_newlib(L, pk_funcs); /* create 'package' table */
|
||||
createsearcherstable(L);
|
||||
/* set field 'path' */
|
||||
setpath(L, "path", LUA_PATHVARVERSION, LUA_PATH_VAR, LUA_PATH_DEFAULT);
|
||||
/* set field 'cpath' */
|
||||
setpath(L, "cpath", LUA_CPATHVARVERSION, LUA_CPATH_VAR, LUA_CPATH_DEFAULT);
|
||||
/* store config information */
|
||||
lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n"
|
||||
LUA_EXEC_DIR "\n" LUA_IGMARK "\n");
|
||||
lua_setfield(L, -2, "config");
|
||||
/* set field 'loaded' */
|
||||
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
|
||||
lua_setfield(L, -2, "loaded");
|
||||
/* set field 'preload' */
|
||||
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
|
||||
lua_setfield(L, -2, "preload");
|
||||
lua_pushglobaltable(L);
|
||||
lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */
|
||||
luaL_setfuncs(L, ll_funcs, 1); /* open lib into global table */
|
||||
lua_pop(L, 1); /* pop global table */
|
||||
return 1; /* return 'package' table */
|
||||
}
|
||||
|
||||
@ -0,0 +1,470 @@
|
||||
/*
|
||||
** $Id: lobject.c,v 2.100 2014/11/21 12:15:57 roberto Exp $
|
||||
** Some generic functions over Lua objects
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lobject_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <stdarg.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lctype.h"
|
||||
#include "ldebug.h"
|
||||
#include "ldo.h"
|
||||
#include "lmem.h"
|
||||
#include "lobject.h"
|
||||
#include "lstate.h"
|
||||
#include "lstring.h"
|
||||
#include "lvm.h"
|
||||
|
||||
|
||||
|
||||
LUAI_DDEF const TValue luaO_nilobject_ = {NILCONSTANT};
|
||||
|
||||
|
||||
/*
|
||||
** converts an integer to a "floating point byte", represented as
|
||||
** (eeeeexxx), where the real value is (1xxx) * 2^(eeeee - 1) if
|
||||
** eeeee != 0 and (xxx) otherwise.
|
||||
*/
|
||||
int luaO_int2fb (unsigned int x) {
|
||||
int e = 0; /* exponent */
|
||||
if (x < 8) return x;
|
||||
while (x >= 0x10) {
|
||||
x = (x+1) >> 1;
|
||||
e++;
|
||||
}
|
||||
return ((e+1) << 3) | (cast_int(x) - 8);
|
||||
}
|
||||
|
||||
|
||||
/* converts back */
|
||||
int luaO_fb2int (int x) {
|
||||
int e = (x >> 3) & 0x1f;
|
||||
if (e == 0) return x;
|
||||
else return ((x & 7) + 8) << (e - 1);
|
||||
}
|
||||
|
||||
|
||||
int luaO_ceillog2 (unsigned int x) {
|
||||
static const lu_byte log_2[256] = {
|
||||
0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
|
||||
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
|
||||
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
|
||||
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
|
||||
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
|
||||
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
|
||||
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
|
||||
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
|
||||
};
|
||||
int l = 0;
|
||||
x--;
|
||||
while (x >= 256) { l += 8; x >>= 8; }
|
||||
return l + log_2[x];
|
||||
}
|
||||
|
||||
|
||||
static lua_Integer intarith (lua_State *L, int op, lua_Integer v1,
|
||||
lua_Integer v2) {
|
||||
switch (op) {
|
||||
case LUA_OPADD: return intop(+, v1, v2);
|
||||
case LUA_OPSUB:return intop(-, v1, v2);
|
||||
case LUA_OPMUL:return intop(*, v1, v2);
|
||||
case LUA_OPMOD: return luaV_mod(L, v1, v2);
|
||||
case LUA_OPIDIV: return luaV_div(L, v1, v2);
|
||||
case LUA_OPBAND: return intop(&, v1, v2);
|
||||
case LUA_OPBOR: return intop(|, v1, v2);
|
||||
case LUA_OPBXOR: return intop(^, v1, v2);
|
||||
case LUA_OPSHL: return luaV_shiftl(v1, v2);
|
||||
case LUA_OPSHR: return luaV_shiftl(v1, -v2);
|
||||
case LUA_OPUNM: return intop(-, 0, v1);
|
||||
case LUA_OPBNOT: return intop(^, ~l_castS2U(0), v1);
|
||||
default: lua_assert(0); return 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static lua_Number numarith (lua_State *L, int op, lua_Number v1,
|
||||
lua_Number v2) {
|
||||
switch (op) {
|
||||
case LUA_OPADD: return luai_numadd(L, v1, v2);
|
||||
case LUA_OPSUB: return luai_numsub(L, v1, v2);
|
||||
case LUA_OPMUL: return luai_nummul(L, v1, v2);
|
||||
case LUA_OPDIV: return luai_numdiv(L, v1, v2);
|
||||
case LUA_OPPOW: return luai_numpow(L, v1, v2);
|
||||
case LUA_OPIDIV: return luai_numidiv(L, v1, v2);
|
||||
case LUA_OPUNM: return luai_numunm(L, v1);
|
||||
case LUA_OPMOD: {
|
||||
lua_Number m;
|
||||
luai_nummod(L, v1, v2, m);
|
||||
return m;
|
||||
}
|
||||
default: lua_assert(0); return 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void luaO_arith (lua_State *L, int op, const TValue *p1, const TValue *p2,
|
||||
TValue *res) {
|
||||
switch (op) {
|
||||
case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR:
|
||||
case LUA_OPSHL: case LUA_OPSHR:
|
||||
case LUA_OPBNOT: { /* operate only on integers */
|
||||
lua_Integer i1; lua_Integer i2;
|
||||
if (tointeger(p1, &i1) && tointeger(p2, &i2)) {
|
||||
setivalue(res, intarith(L, op, i1, i2));
|
||||
return;
|
||||
}
|
||||
else break; /* go to the end */
|
||||
}
|
||||
case LUA_OPDIV: case LUA_OPPOW: { /* operate only on floats */
|
||||
lua_Number n1; lua_Number n2;
|
||||
if (tonumber(p1, &n1) && tonumber(p2, &n2)) {
|
||||
setfltvalue(res, numarith(L, op, n1, n2));
|
||||
return;
|
||||
}
|
||||
else break; /* go to the end */
|
||||
}
|
||||
default: { /* other operations */
|
||||
lua_Number n1; lua_Number n2;
|
||||
if (ttisinteger(p1) && ttisinteger(p2)) {
|
||||
setivalue(res, intarith(L, op, ivalue(p1), ivalue(p2)));
|
||||
return;
|
||||
}
|
||||
else if (tonumber(p1, &n1) && tonumber(p2, &n2)) {
|
||||
setfltvalue(res, numarith(L, op, n1, n2));
|
||||
return;
|
||||
}
|
||||
else break; /* go to the end */
|
||||
}
|
||||
}
|
||||
/* could not perform raw operation; try metamethod */
|
||||
lua_assert(L != NULL); /* should not fail when folding (compile time) */
|
||||
luaT_trybinTM(L, p1, p2, res, cast(TMS, op - LUA_OPADD + TM_ADD));
|
||||
}
|
||||
|
||||
|
||||
int luaO_hexavalue (int c) {
|
||||
if (lisdigit(c)) return c - '0';
|
||||
else return ltolower(c) - 'a' + 10;
|
||||
}
|
||||
|
||||
|
||||
static int isneg (const char **s) {
|
||||
if (**s == '-') { (*s)++; return 1; }
|
||||
else if (**s == '+') (*s)++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** {==================================================================
|
||||
** Lua's implementation for 'lua_strx2number'
|
||||
** ===================================================================
|
||||
*/
|
||||
#if !defined(lua_strx2number)
|
||||
|
||||
#include <math.h>
|
||||
|
||||
/* maximum number of significant digits to read (to avoid overflows
|
||||
even with single floats) */
|
||||
#define MAXSIGDIG 30
|
||||
|
||||
/*
|
||||
** convert an hexadecimal numeric string to a number, following
|
||||
** C99 specification for 'strtod'
|
||||
*/
|
||||
static lua_Number lua_strx2number (const char *s, char **endptr) {
|
||||
lua_Number r = 0.0; /* result (accumulator) */
|
||||
int sigdig = 0; /* number of significant digits */
|
||||
int nosigdig = 0; /* number of non-significant digits */
|
||||
int e = 0; /* exponent correction */
|
||||
int neg = 0; /* 1 if number is negative */
|
||||
int dot = 0; /* true after seen a dot */
|
||||
*endptr = cast(char *, s); /* nothing is valid yet */
|
||||
while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */
|
||||
neg = isneg(&s); /* check signal */
|
||||
if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X'))) /* check '0x' */
|
||||
return 0.0; /* invalid format (no '0x') */
|
||||
for (s += 2; ; s++) { /* skip '0x' and read numeral */
|
||||
if (*s == '.') {
|
||||
if (dot) break; /* second dot? stop loop */
|
||||
else dot = 1;
|
||||
}
|
||||
else if (lisxdigit(cast_uchar(*s))) {
|
||||
if (sigdig == 0 && *s == '0') /* non-significant digit (zero)? */
|
||||
nosigdig++;
|
||||
else if (++sigdig <= MAXSIGDIG) /* can read it without overflow? */
|
||||
r = (r * cast_num(16.0)) + luaO_hexavalue(*s);
|
||||
else e++; /* too many digits; ignore, but still count for exponent */
|
||||
if (dot) e--; /* decimal digit? correct exponent */
|
||||
}
|
||||
else break; /* neither a dot nor a digit */
|
||||
}
|
||||
if (nosigdig + sigdig == 0) /* no digits? */
|
||||
return 0.0; /* invalid format */
|
||||
*endptr = cast(char *, s); /* valid up to here */
|
||||
e *= 4; /* each digit multiplies/divides value by 2^4 */
|
||||
if (*s == 'p' || *s == 'P') { /* exponent part? */
|
||||
int exp1 = 0; /* exponent value */
|
||||
int neg1; /* exponent signal */
|
||||
s++; /* skip 'p' */
|
||||
neg1 = isneg(&s); /* signal */
|
||||
if (!lisdigit(cast_uchar(*s)))
|
||||
return 0.0; /* invalid; must have at least one digit */
|
||||
while (lisdigit(cast_uchar(*s))) /* read exponent */
|
||||
exp1 = exp1 * 10 + *(s++) - '0';
|
||||
if (neg1) exp1 = -exp1;
|
||||
e += exp1;
|
||||
*endptr = cast(char *, s); /* valid up to here */
|
||||
}
|
||||
if (neg) r = -r;
|
||||
return l_mathop(ldexp)(r, e);
|
||||
}
|
||||
|
||||
#endif
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
static const char *l_str2d (const char *s, lua_Number *result) {
|
||||
char *endptr;
|
||||
if (strpbrk(s, "nN")) /* reject 'inf' and 'nan' */
|
||||
return NULL;
|
||||
else if (strpbrk(s, "xX")) /* hex? */
|
||||
*result = lua_strx2number(s, &endptr);
|
||||
else
|
||||
*result = lua_str2number(s, &endptr);
|
||||
if (endptr == s) return 0; /* nothing recognized */
|
||||
while (lisspace(cast_uchar(*endptr))) endptr++;
|
||||
return (*endptr == '\0' ? endptr : NULL); /* OK if no trailing characters */
|
||||
}
|
||||
|
||||
|
||||
static const char *l_str2int (const char *s, lua_Integer *result) {
|
||||
lua_Unsigned a = 0;
|
||||
int empty = 1;
|
||||
int neg;
|
||||
while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */
|
||||
neg = isneg(&s);
|
||||
if (s[0] == '0' &&
|
||||
(s[1] == 'x' || s[1] == 'X')) { /* hex? */
|
||||
s += 2; /* skip '0x' */
|
||||
for (; lisxdigit(cast_uchar(*s)); s++) {
|
||||
a = a * 16 + luaO_hexavalue(*s);
|
||||
empty = 0;
|
||||
}
|
||||
}
|
||||
else { /* decimal */
|
||||
for (; lisdigit(cast_uchar(*s)); s++) {
|
||||
a = a * 10 + *s - '0';
|
||||
empty = 0;
|
||||
}
|
||||
}
|
||||
while (lisspace(cast_uchar(*s))) s++; /* skip trailing spaces */
|
||||
if (empty || *s != '\0') return NULL; /* something wrong in the numeral */
|
||||
else {
|
||||
*result = l_castU2S((neg) ? 0u - a : a);
|
||||
return s;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
size_t luaO_str2num (const char *s, TValue *o) {
|
||||
lua_Integer i; lua_Number n;
|
||||
const char *e;
|
||||
if ((e = l_str2int(s, &i)) != NULL) { /* try as an integer */
|
||||
setivalue(o, i);
|
||||
}
|
||||
else if ((e = l_str2d(s, &n)) != NULL) { /* else try as a float */
|
||||
setfltvalue(o, n);
|
||||
}
|
||||
else
|
||||
return 0; /* conversion failed */
|
||||
return (e - s + 1); /* success; return string size */
|
||||
}
|
||||
|
||||
|
||||
int luaO_utf8esc (char *buff, unsigned long x) {
|
||||
int n = 1; /* number of bytes put in buffer (backwards) */
|
||||
lua_assert(x <= 0x10FFFF);
|
||||
if (x < 0x80) /* ascii? */
|
||||
buff[UTF8BUFFSZ - 1] = cast(char, x);
|
||||
else { /* need continuation bytes */
|
||||
unsigned int mfb = 0x3f; /* maximum that fits in first byte */
|
||||
do { /* add continuation bytes */
|
||||
buff[UTF8BUFFSZ - (n++)] = cast(char, 0x80 | (x & 0x3f));
|
||||
x >>= 6; /* remove added bits */
|
||||
mfb >>= 1; /* now there is one less bit available in first byte */
|
||||
} while (x > mfb); /* still needs continuation byte? */
|
||||
buff[UTF8BUFFSZ - n] = cast(char, (~mfb << 1) | x); /* add first byte */
|
||||
}
|
||||
return n;
|
||||
}
|
||||
|
||||
|
||||
/* maximum length of the conversion of a number to a string */
|
||||
#define MAXNUMBER2STR 50
|
||||
|
||||
|
||||
/*
|
||||
** Convert a number object to a string
|
||||
*/
|
||||
void luaO_tostring (lua_State *L, StkId obj) {
|
||||
char buff[MAXNUMBER2STR];
|
||||
size_t len;
|
||||
lua_assert(ttisnumber(obj));
|
||||
if (ttisinteger(obj))
|
||||
len = lua_integer2str(buff, ivalue(obj));
|
||||
else {
|
||||
len = lua_number2str(buff, fltvalue(obj));
|
||||
#if !defined(LUA_COMPAT_FLOATSTRING)
|
||||
if (buff[strspn(buff, "-0123456789")] == '\0') { /* looks like an int? */
|
||||
buff[len++] = '.';
|
||||
buff[len++] = '0'; /* adds '.0' to result */
|
||||
}
|
||||
#endif
|
||||
}
|
||||
setsvalue2s(L, obj, luaS_newlstr(L, buff, len));
|
||||
}
|
||||
|
||||
|
||||
static void pushstr (lua_State *L, const char *str, size_t l) {
|
||||
setsvalue2s(L, L->top++, luaS_newlstr(L, str, l));
|
||||
}
|
||||
|
||||
|
||||
/* this function handles only '%d', '%c', '%f', '%p', and '%s'
|
||||
conventional formats, plus Lua-specific '%I' and '%U' */
|
||||
const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
|
||||
int n = 0;
|
||||
for (;;) {
|
||||
const char *e = strchr(fmt, '%');
|
||||
if (e == NULL) break;
|
||||
luaD_checkstack(L, 2); /* fmt + item */
|
||||
pushstr(L, fmt, e - fmt);
|
||||
switch (*(e+1)) {
|
||||
case 's': {
|
||||
const char *s = va_arg(argp, char *);
|
||||
if (s == NULL) s = "(null)";
|
||||
pushstr(L, s, strlen(s));
|
||||
break;
|
||||
}
|
||||
case 'c': {
|
||||
char buff = cast(char, va_arg(argp, int));
|
||||
if (lisprint(cast_uchar(buff)))
|
||||
pushstr(L, &buff, 1);
|
||||
else /* non-printable character; print its code */
|
||||
luaO_pushfstring(L, "<\\%d>", cast_uchar(buff));
|
||||
break;
|
||||
}
|
||||
case 'd': {
|
||||
setivalue(L->top++, va_arg(argp, int));
|
||||
luaO_tostring(L, L->top - 1);
|
||||
break;
|
||||
}
|
||||
case 'I': {
|
||||
setivalue(L->top++, cast(lua_Integer, va_arg(argp, l_uacInt)));
|
||||
luaO_tostring(L, L->top - 1);
|
||||
break;
|
||||
}
|
||||
case 'f': {
|
||||
setfltvalue(L->top++, cast_num(va_arg(argp, l_uacNumber)));
|
||||
luaO_tostring(L, L->top - 1);
|
||||
break;
|
||||
}
|
||||
case 'p': {
|
||||
char buff[4*sizeof(void *) + 8]; /* should be enough space for a '%p' */
|
||||
int l = sprintf(buff, "%p", va_arg(argp, void *));
|
||||
pushstr(L, buff, l);
|
||||
break;
|
||||
}
|
||||
case 'U': {
|
||||
char buff[UTF8BUFFSZ];
|
||||
int l = luaO_utf8esc(buff, cast(long, va_arg(argp, long)));
|
||||
pushstr(L, buff + UTF8BUFFSZ - l, l);
|
||||
break;
|
||||
}
|
||||
case '%': {
|
||||
pushstr(L, "%", 1);
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
luaG_runerror(L, "invalid option '%%%c' to 'lua_pushfstring'",
|
||||
*(e + 1));
|
||||
}
|
||||
}
|
||||
n += 2;
|
||||
fmt = e+2;
|
||||
}
|
||||
luaD_checkstack(L, 1);
|
||||
pushstr(L, fmt, strlen(fmt));
|
||||
if (n > 0) luaV_concat(L, n + 1);
|
||||
return svalue(L->top - 1);
|
||||
}
|
||||
|
||||
|
||||
const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
|
||||
const char *msg;
|
||||
va_list argp;
|
||||
va_start(argp, fmt);
|
||||
msg = luaO_pushvfstring(L, fmt, argp);
|
||||
va_end(argp);
|
||||
return msg;
|
||||
}
|
||||
|
||||
|
||||
/* number of chars of a literal string without the ending \0 */
|
||||
#define LL(x) (sizeof(x)/sizeof(char) - 1)
|
||||
|
||||
#define RETS "..."
|
||||
#define PRE "[string \""
|
||||
#define POS "\"]"
|
||||
|
||||
#define addstr(a,b,l) ( memcpy(a,b,(l) * sizeof(char)), a += (l) )
|
||||
|
||||
void luaO_chunkid (char *out, const char *source, size_t bufflen) {
|
||||
size_t l = strlen(source);
|
||||
if (*source == '=') { /* 'literal' source */
|
||||
if (l <= bufflen) /* small enough? */
|
||||
memcpy(out, source + 1, l * sizeof(char));
|
||||
else { /* truncate it */
|
||||
addstr(out, source + 1, bufflen - 1);
|
||||
*out = '\0';
|
||||
}
|
||||
}
|
||||
else if (*source == '@') { /* file name */
|
||||
if (l <= bufflen) /* small enough? */
|
||||
memcpy(out, source + 1, l * sizeof(char));
|
||||
else { /* add '...' before rest of name */
|
||||
addstr(out, RETS, LL(RETS));
|
||||
bufflen -= LL(RETS);
|
||||
memcpy(out, source + 1 + l - bufflen, bufflen * sizeof(char));
|
||||
}
|
||||
}
|
||||
else { /* string; format as [string "source"] */
|
||||
const char *nl = strchr(source, '\n'); /* find first new line (if any) */
|
||||
addstr(out, PRE, LL(PRE)); /* add prefix */
|
||||
bufflen -= LL(PRE RETS POS) + 1; /* save space for prefix+suffix+'\0' */
|
||||
if (l < bufflen && nl == NULL) { /* small one-line source? */
|
||||
addstr(out, source, l); /* keep it */
|
||||
}
|
||||
else {
|
||||
if (nl != NULL) l = nl - source; /* stop at first newline */
|
||||
if (l > bufflen) l = bufflen;
|
||||
addstr(out, source, l);
|
||||
addstr(out, RETS, LL(RETS));
|
||||
}
|
||||
memcpy(out, POS, (LL(POS) + 1) * sizeof(char));
|
||||
}
|
||||
}
|
||||
|
||||
@ -0,0 +1,122 @@
|
||||
/*
|
||||
** $Id: lopcodes.c,v 1.54 2014/11/02 19:19:04 roberto Exp $
|
||||
** Opcodes for Lua virtual machine
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lopcodes_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include "lopcodes.h"
|
||||
|
||||
|
||||
/* ORDER OP */
|
||||
|
||||
LUAI_DDEF const char *const luaP_opnames[NUM_OPCODES+1] = {
|
||||
"MOVE",
|
||||
"LOADK",
|
||||
"LOADKX",
|
||||
"LOADBOOL",
|
||||
"LOADNIL",
|
||||
"GETUPVAL",
|
||||
"GETTABUP",
|
||||
"GETTABLE",
|
||||
"SETTABUP",
|
||||
"SETUPVAL",
|
||||
"SETTABLE",
|
||||
"NEWTABLE",
|
||||
"SELF",
|
||||
"ADD",
|
||||
"SUB",
|
||||
"MUL",
|
||||
"MOD",
|
||||
"POW",
|
||||
"DIV",
|
||||
"IDIV",
|
||||
"BAND",
|
||||
"BOR",
|
||||
"BXOR",
|
||||
"SHL",
|
||||
"SHR",
|
||||
"UNM",
|
||||
"BNOT",
|
||||
"NOT",
|
||||
"LEN",
|
||||
"CONCAT",
|
||||
"JMP",
|
||||
"EQ",
|
||||
"LT",
|
||||
"LE",
|
||||
"TEST",
|
||||
"TESTSET",
|
||||
"CALL",
|
||||
"TAILCALL",
|
||||
"RETURN",
|
||||
"FORLOOP",
|
||||
"FORPREP",
|
||||
"TFORCALL",
|
||||
"TFORLOOP",
|
||||
"SETLIST",
|
||||
"CLOSURE",
|
||||
"VARARG",
|
||||
"EXTRAARG",
|
||||
NULL
|
||||
};
|
||||
|
||||
|
||||
#define opmode(t,a,b,c,m) (((t)<<7) | ((a)<<6) | ((b)<<4) | ((c)<<2) | (m))
|
||||
|
||||
LUAI_DDEF const lu_byte luaP_opmodes[NUM_OPCODES] = {
|
||||
/* T A B C mode opcode */
|
||||
opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_MOVE */
|
||||
,opmode(0, 1, OpArgK, OpArgN, iABx) /* OP_LOADK */
|
||||
,opmode(0, 1, OpArgN, OpArgN, iABx) /* OP_LOADKX */
|
||||
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_LOADBOOL */
|
||||
,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_LOADNIL */
|
||||
,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_GETUPVAL */
|
||||
,opmode(0, 1, OpArgU, OpArgK, iABC) /* OP_GETTABUP */
|
||||
,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_GETTABLE */
|
||||
,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABUP */
|
||||
,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_SETUPVAL */
|
||||
,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABLE */
|
||||
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_NEWTABLE */
|
||||
,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_SELF */
|
||||
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_ADD */
|
||||
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SUB */
|
||||
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MUL */
|
||||
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MOD */
|
||||
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_POW */
|
||||
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_DIV */
|
||||
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_IDIV */
|
||||
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_BAND */
|
||||
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_BOR */
|
||||
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_BXOR */
|
||||
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SHL */
|
||||
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SHR */
|
||||
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_UNM */
|
||||
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_BNOT */
|
||||
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_NOT */
|
||||
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_LEN */
|
||||
,opmode(0, 1, OpArgR, OpArgR, iABC) /* OP_CONCAT */
|
||||
,opmode(0, 0, OpArgR, OpArgN, iAsBx) /* OP_JMP */
|
||||
,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_EQ */
|
||||
,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LT */
|
||||
,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LE */
|
||||
,opmode(1, 0, OpArgN, OpArgU, iABC) /* OP_TEST */
|
||||
,opmode(1, 1, OpArgR, OpArgU, iABC) /* OP_TESTSET */
|
||||
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_CALL */
|
||||
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_TAILCALL */
|
||||
,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_RETURN */
|
||||
,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORLOOP */
|
||||
,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORPREP */
|
||||
,opmode(0, 0, OpArgN, OpArgU, iABC) /* OP_TFORCALL */
|
||||
,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_TFORLOOP */
|
||||
,opmode(0, 0, OpArgU, OpArgU, iABC) /* OP_SETLIST */
|
||||
,opmode(0, 1, OpArgU, OpArgN, iABx) /* OP_CLOSURE */
|
||||
,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_VARARG */
|
||||
,opmode(0, 0, OpArgU, OpArgU, iAx) /* OP_EXTRAARG */
|
||||
};
|
||||
|
||||
@ -0,0 +1,356 @@
|
||||
/*
|
||||
** $Id: loslib.c,v 1.53 2014/12/10 15:42:42 roberto Exp $
|
||||
** Standard Operating System library
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define loslib_c
|
||||
#define LUA_LIB
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <errno.h>
|
||||
#include <locale.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <time.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lauxlib.h"
|
||||
#include "lualib.h"
|
||||
|
||||
|
||||
#if !defined(LUA_STRFTIMEOPTIONS) /* { */
|
||||
/*
|
||||
** list of valid conversion specifiers for the 'strftime' function
|
||||
*/
|
||||
|
||||
#if defined(LUA_USE_C89)
|
||||
#define LUA_STRFTIMEOPTIONS { "aAbBcdHIjmMpSUwWxXyYz%", "" }
|
||||
#else /* C99 specification */
|
||||
#define LUA_STRFTIMEOPTIONS \
|
||||
{ "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%", "", \
|
||||
"E", "cCxXyY", \
|
||||
"O", "deHImMSuUVwWy" }
|
||||
#endif
|
||||
|
||||
#endif /* } */
|
||||
|
||||
|
||||
|
||||
#if !defined(l_time_t) /* { */
|
||||
/*
|
||||
** type to represent time_t in Lua
|
||||
*/
|
||||
#define l_timet lua_Integer
|
||||
#define l_pushtime(L,t) lua_pushinteger(L,(lua_Integer)(t))
|
||||
#define l_checktime(L,a) ((time_t)luaL_checkinteger(L,a))
|
||||
|
||||
#endif /* } */
|
||||
|
||||
|
||||
|
||||
#if !defined(lua_tmpnam) /* { */
|
||||
/*
|
||||
** By default, Lua uses tmpnam except when POSIX is available, where it
|
||||
** uses mkstemp.
|
||||
*/
|
||||
|
||||
#if defined(LUA_USE_POSIX) /* { */
|
||||
|
||||
#include <unistd.h>
|
||||
|
||||
#define LUA_TMPNAMBUFSIZE 32
|
||||
|
||||
#if !defined(LUA_TMPNAMTEMPLATE)
|
||||
#define LUA_TMPNAMTEMPLATE "/tmp/lua_XXXXXX"
|
||||
#endif
|
||||
|
||||
#define lua_tmpnam(b,e) { \
|
||||
strcpy(b, LUA_TMPNAMTEMPLATE); \
|
||||
e = mkstemp(b); \
|
||||
if (e != -1) close(e); \
|
||||
e = (e == -1); }
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
/* ISO C definitions */
|
||||
#define LUA_TMPNAMBUFSIZE L_tmpnam
|
||||
#define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); }
|
||||
|
||||
#endif /* } */
|
||||
|
||||
#endif /* } */
|
||||
|
||||
|
||||
|
||||
#if !defined(l_gmtime) /* { */
|
||||
/*
|
||||
** By default, Lua uses gmtime/localtime, except when POSIX is available,
|
||||
** where it uses gmtime_r/localtime_r
|
||||
*/
|
||||
|
||||
#if defined(LUA_USE_POSIX) /* { */
|
||||
|
||||
#define l_gmtime(t,r) gmtime_r(t,r)
|
||||
#define l_localtime(t,r) localtime_r(t,r)
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
/* ISO C definitions */
|
||||
#define l_gmtime(t,r) ((void)r, gmtime(t))
|
||||
#define l_localtime(t,r) ((void)r, localtime(t))
|
||||
|
||||
#endif /* } */
|
||||
|
||||
#endif /* } */
|
||||
|
||||
|
||||
|
||||
static int os_execute (lua_State *L) {
|
||||
const char *cmd = luaL_optstring(L, 1, NULL);
|
||||
int stat = system(cmd);
|
||||
if (cmd != NULL)
|
||||
return luaL_execresult(L, stat);
|
||||
else {
|
||||
lua_pushboolean(L, stat); /* true if there is a shell */
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int os_remove (lua_State *L) {
|
||||
const char *filename = luaL_checkstring(L, 1);
|
||||
return luaL_fileresult(L, remove(filename) == 0, filename);
|
||||
}
|
||||
|
||||
|
||||
static int os_rename (lua_State *L) {
|
||||
const char *fromname = luaL_checkstring(L, 1);
|
||||
const char *toname = luaL_checkstring(L, 2);
|
||||
return luaL_fileresult(L, rename(fromname, toname) == 0, NULL);
|
||||
}
|
||||
|
||||
|
||||
static int os_tmpname (lua_State *L) {
|
||||
char buff[LUA_TMPNAMBUFSIZE];
|
||||
int err;
|
||||
lua_tmpnam(buff, err);
|
||||
if (err)
|
||||
return luaL_error(L, "unable to generate a unique filename");
|
||||
lua_pushstring(L, buff);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int os_getenv (lua_State *L) {
|
||||
lua_pushstring(L, getenv(luaL_checkstring(L, 1))); /* if NULL push nil */
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int os_clock (lua_State *L) {
|
||||
lua_pushnumber(L, ((lua_Number)clock())/(lua_Number)CLOCKS_PER_SEC);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Time/Date operations
|
||||
** { year=%Y, month=%m, day=%d, hour=%H, min=%M, sec=%S,
|
||||
** wday=%w+1, yday=%j, isdst=? }
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
static void setfield (lua_State *L, const char *key, int value) {
|
||||
lua_pushinteger(L, value);
|
||||
lua_setfield(L, -2, key);
|
||||
}
|
||||
|
||||
static void setboolfield (lua_State *L, const char *key, int value) {
|
||||
if (value < 0) /* undefined? */
|
||||
return; /* does not set field */
|
||||
lua_pushboolean(L, value);
|
||||
lua_setfield(L, -2, key);
|
||||
}
|
||||
|
||||
static int getboolfield (lua_State *L, const char *key) {
|
||||
int res;
|
||||
res = (lua_getfield(L, -1, key) == LUA_TNIL) ? -1 : lua_toboolean(L, -1);
|
||||
lua_pop(L, 1);
|
||||
return res;
|
||||
}
|
||||
|
||||
|
||||
static int getfield (lua_State *L, const char *key, int d) {
|
||||
int res, isnum;
|
||||
lua_getfield(L, -1, key);
|
||||
res = (int)lua_tointegerx(L, -1, &isnum);
|
||||
if (!isnum) {
|
||||
if (d < 0)
|
||||
return luaL_error(L, "field '%s' missing in date table", key);
|
||||
res = d;
|
||||
}
|
||||
lua_pop(L, 1);
|
||||
return res;
|
||||
}
|
||||
|
||||
|
||||
static const char *checkoption (lua_State *L, const char *conv, char *buff) {
|
||||
static const char *const options[] = LUA_STRFTIMEOPTIONS;
|
||||
unsigned int i;
|
||||
for (i = 0; i < sizeof(options)/sizeof(options[0]); i += 2) {
|
||||
if (*conv != '\0' && strchr(options[i], *conv) != NULL) {
|
||||
buff[1] = *conv;
|
||||
if (*options[i + 1] == '\0') { /* one-char conversion specifier? */
|
||||
buff[2] = '\0'; /* end buffer */
|
||||
return conv + 1;
|
||||
}
|
||||
else if (*(conv + 1) != '\0' &&
|
||||
strchr(options[i + 1], *(conv + 1)) != NULL) {
|
||||
buff[2] = *(conv + 1); /* valid two-char conversion specifier */
|
||||
buff[3] = '\0'; /* end buffer */
|
||||
return conv + 2;
|
||||
}
|
||||
}
|
||||
}
|
||||
luaL_argerror(L, 1,
|
||||
lua_pushfstring(L, "invalid conversion specifier '%%%s'", conv));
|
||||
return conv; /* to avoid warnings */
|
||||
}
|
||||
|
||||
|
||||
static int os_date (lua_State *L) {
|
||||
const char *s = luaL_optstring(L, 1, "%c");
|
||||
time_t t = luaL_opt(L, l_checktime, 2, time(NULL));
|
||||
struct tm tmr, *stm;
|
||||
if (*s == '!') { /* UTC? */
|
||||
stm = l_gmtime(&t, &tmr);
|
||||
s++; /* skip '!' */
|
||||
}
|
||||
else
|
||||
stm = l_localtime(&t, &tmr);
|
||||
if (stm == NULL) /* invalid date? */
|
||||
lua_pushnil(L);
|
||||
else if (strcmp(s, "*t") == 0) {
|
||||
lua_createtable(L, 0, 9); /* 9 = number of fields */
|
||||
setfield(L, "sec", stm->tm_sec);
|
||||
setfield(L, "min", stm->tm_min);
|
||||
setfield(L, "hour", stm->tm_hour);
|
||||
setfield(L, "day", stm->tm_mday);
|
||||
setfield(L, "month", stm->tm_mon+1);
|
||||
setfield(L, "year", stm->tm_year+1900);
|
||||
setfield(L, "wday", stm->tm_wday+1);
|
||||
setfield(L, "yday", stm->tm_yday+1);
|
||||
setboolfield(L, "isdst", stm->tm_isdst);
|
||||
}
|
||||
else {
|
||||
char cc[4];
|
||||
luaL_Buffer b;
|
||||
cc[0] = '%';
|
||||
luaL_buffinit(L, &b);
|
||||
while (*s) {
|
||||
if (*s != '%') /* no conversion specifier? */
|
||||
luaL_addchar(&b, *s++);
|
||||
else {
|
||||
size_t reslen;
|
||||
char buff[200]; /* should be big enough for any conversion result */
|
||||
s = checkoption(L, s + 1, cc);
|
||||
reslen = strftime(buff, sizeof(buff), cc, stm);
|
||||
luaL_addlstring(&b, buff, reslen);
|
||||
}
|
||||
}
|
||||
luaL_pushresult(&b);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int os_time (lua_State *L) {
|
||||
time_t t;
|
||||
if (lua_isnoneornil(L, 1)) /* called without args? */
|
||||
t = time(NULL); /* get current time */
|
||||
else {
|
||||
struct tm ts;
|
||||
luaL_checktype(L, 1, LUA_TTABLE);
|
||||
lua_settop(L, 1); /* make sure table is at the top */
|
||||
ts.tm_sec = getfield(L, "sec", 0);
|
||||
ts.tm_min = getfield(L, "min", 0);
|
||||
ts.tm_hour = getfield(L, "hour", 12);
|
||||
ts.tm_mday = getfield(L, "day", -1);
|
||||
ts.tm_mon = getfield(L, "month", -1) - 1;
|
||||
ts.tm_year = getfield(L, "year", -1) - 1900;
|
||||
ts.tm_isdst = getboolfield(L, "isdst");
|
||||
t = mktime(&ts);
|
||||
}
|
||||
if (t != (time_t)(l_timet)t)
|
||||
luaL_error(L, "time result cannot be represented in this Lua instalation");
|
||||
else if (t == (time_t)(-1))
|
||||
lua_pushnil(L);
|
||||
else
|
||||
l_pushtime(L, t);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int os_difftime (lua_State *L) {
|
||||
double res = difftime((l_checktime(L, 1)), (l_checktime(L, 2)));
|
||||
lua_pushnumber(L, (lua_Number)res);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
static int os_setlocale (lua_State *L) {
|
||||
static const int cat[] = {LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY,
|
||||
LC_NUMERIC, LC_TIME};
|
||||
static const char *const catnames[] = {"all", "collate", "ctype", "monetary",
|
||||
"numeric", "time", NULL};
|
||||
const char *l = luaL_optstring(L, 1, NULL);
|
||||
int op = luaL_checkoption(L, 2, "all", catnames);
|
||||
lua_pushstring(L, setlocale(cat[op], l));
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int os_exit (lua_State *L) {
|
||||
int status;
|
||||
if (lua_isboolean(L, 1))
|
||||
status = (lua_toboolean(L, 1) ? EXIT_SUCCESS : EXIT_FAILURE);
|
||||
else
|
||||
status = (int)luaL_optinteger(L, 1, EXIT_SUCCESS);
|
||||
if (lua_toboolean(L, 2))
|
||||
lua_close(L);
|
||||
if (L) exit(status); /* 'if' to avoid warnings for unreachable 'return' */
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static const luaL_Reg syslib[] = {
|
||||
{"clock", os_clock},
|
||||
{"date", os_date},
|
||||
{"difftime", os_difftime},
|
||||
{"execute", os_execute},
|
||||
{"exit", os_exit},
|
||||
{"getenv", os_getenv},
|
||||
{"remove", os_remove},
|
||||
{"rename", os_rename},
|
||||
{"setlocale", os_setlocale},
|
||||
{"time", os_time},
|
||||
{"tmpname", os_tmpname},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
|
||||
LUAMOD_API int luaopen_os (lua_State *L) {
|
||||
luaL_newlib(L, syslib);
|
||||
return 1;
|
||||
}
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,346 @@
|
||||
/*
|
||||
** $Id: lstate.c,v 2.127 2014/11/02 19:33:33 roberto Exp $
|
||||
** Global State
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lstate_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <stddef.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lapi.h"
|
||||
#include "ldebug.h"
|
||||
#include "ldo.h"
|
||||
#include "lfunc.h"
|
||||
#include "lgc.h"
|
||||
#include "llex.h"
|
||||
#include "lmem.h"
|
||||
#include "lstate.h"
|
||||
#include "lstring.h"
|
||||
#include "ltable.h"
|
||||
#include "ltm.h"
|
||||
|
||||
|
||||
#if !defined(LUAI_GCPAUSE)
|
||||
#define LUAI_GCPAUSE 200 /* 200% */
|
||||
#endif
|
||||
|
||||
#if !defined(LUAI_GCMUL)
|
||||
#define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */
|
||||
#endif
|
||||
|
||||
|
||||
#define MEMERRMSG "not enough memory"
|
||||
|
||||
|
||||
/*
|
||||
** a macro to help the creation of a unique random seed when a state is
|
||||
** created; the seed is used to randomize hashes.
|
||||
*/
|
||||
#if !defined(luai_makeseed)
|
||||
#include <time.h>
|
||||
#define luai_makeseed() cast(unsigned int, time(NULL))
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** thread state + extra space
|
||||
*/
|
||||
typedef struct LX {
|
||||
lu_byte extra_[LUA_EXTRASPACE];
|
||||
lua_State l;
|
||||
} LX;
|
||||
|
||||
|
||||
/*
|
||||
** Main thread combines a thread state and the global state
|
||||
*/
|
||||
typedef struct LG {
|
||||
LX l;
|
||||
global_State g;
|
||||
} LG;
|
||||
|
||||
|
||||
|
||||
#define fromstate(L) (cast(LX *, cast(lu_byte *, (L)) - offsetof(LX, l)))
|
||||
|
||||
|
||||
/*
|
||||
** Compute an initial seed as random as possible. Rely on Address Space
|
||||
** Layout Randomization (if present) to increase randomness..
|
||||
*/
|
||||
#define addbuff(b,p,e) \
|
||||
{ size_t t = cast(size_t, e); \
|
||||
memcpy(buff + p, &t, sizeof(t)); p += sizeof(t); }
|
||||
|
||||
static unsigned int makeseed (lua_State *L) {
|
||||
char buff[4 * sizeof(size_t)];
|
||||
unsigned int h = luai_makeseed();
|
||||
int p = 0;
|
||||
addbuff(buff, p, L); /* heap variable */
|
||||
addbuff(buff, p, &h); /* local variable */
|
||||
addbuff(buff, p, luaO_nilobject); /* global variable */
|
||||
addbuff(buff, p, &lua_newstate); /* public function */
|
||||
lua_assert(p == sizeof(buff));
|
||||
return luaS_hash(buff, p, h);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** set GCdebt to a new value keeping the value (totalbytes + GCdebt)
|
||||
** invariant
|
||||
*/
|
||||
void luaE_setdebt (global_State *g, l_mem debt) {
|
||||
g->totalbytes -= (debt - g->GCdebt);
|
||||
g->GCdebt = debt;
|
||||
}
|
||||
|
||||
|
||||
CallInfo *luaE_extendCI (lua_State *L) {
|
||||
CallInfo *ci = luaM_new(L, CallInfo);
|
||||
lua_assert(L->ci->next == NULL);
|
||||
L->ci->next = ci;
|
||||
ci->previous = L->ci;
|
||||
ci->next = NULL;
|
||||
return ci;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** free all CallInfo structures not in use by a thread
|
||||
*/
|
||||
void luaE_freeCI (lua_State *L) {
|
||||
CallInfo *ci = L->ci;
|
||||
CallInfo *next = ci->next;
|
||||
ci->next = NULL;
|
||||
while ((ci = next) != NULL) {
|
||||
next = ci->next;
|
||||
luaM_free(L, ci);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** free half of the CallInfo structures not in use by a thread
|
||||
*/
|
||||
void luaE_shrinkCI (lua_State *L) {
|
||||
CallInfo *ci = L->ci;
|
||||
while (ci->next != NULL) { /* while there is 'next' */
|
||||
CallInfo *next2 = ci->next->next; /* next's next */
|
||||
if (next2 == NULL) break;
|
||||
luaM_free(L, ci->next); /* remove next */
|
||||
ci->next = next2; /* remove 'next' from the list */
|
||||
next2->previous = ci;
|
||||
ci = next2;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void stack_init (lua_State *L1, lua_State *L) {
|
||||
int i; CallInfo *ci;
|
||||
/* initialize stack array */
|
||||
L1->stack = luaM_newvector(L, BASIC_STACK_SIZE, TValue);
|
||||
L1->stacksize = BASIC_STACK_SIZE;
|
||||
for (i = 0; i < BASIC_STACK_SIZE; i++)
|
||||
setnilvalue(L1->stack + i); /* erase new stack */
|
||||
L1->top = L1->stack;
|
||||
L1->stack_last = L1->stack + L1->stacksize - EXTRA_STACK;
|
||||
/* initialize first ci */
|
||||
ci = &L1->base_ci;
|
||||
ci->next = ci->previous = NULL;
|
||||
ci->callstatus = 0;
|
||||
ci->func = L1->top;
|
||||
setnilvalue(L1->top++); /* 'function' entry for this 'ci' */
|
||||
ci->top = L1->top + LUA_MINSTACK;
|
||||
L1->ci = ci;
|
||||
}
|
||||
|
||||
|
||||
static void freestack (lua_State *L) {
|
||||
if (L->stack == NULL)
|
||||
return; /* stack not completely built yet */
|
||||
L->ci = &L->base_ci; /* free the entire 'ci' list */
|
||||
luaE_freeCI(L);
|
||||
luaM_freearray(L, L->stack, L->stacksize); /* free stack array */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Create registry table and its predefined values
|
||||
*/
|
||||
static void init_registry (lua_State *L, global_State *g) {
|
||||
TValue temp;
|
||||
/* create registry */
|
||||
Table *registry = luaH_new(L);
|
||||
sethvalue(L, &g->l_registry, registry);
|
||||
luaH_resize(L, registry, LUA_RIDX_LAST, 0);
|
||||
/* registry[LUA_RIDX_MAINTHREAD] = L */
|
||||
setthvalue(L, &temp, L); /* temp = L */
|
||||
luaH_setint(L, registry, LUA_RIDX_MAINTHREAD, &temp);
|
||||
/* registry[LUA_RIDX_GLOBALS] = table of globals */
|
||||
sethvalue(L, &temp, luaH_new(L)); /* temp = new table (global table) */
|
||||
luaH_setint(L, registry, LUA_RIDX_GLOBALS, &temp);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** open parts of the state that may cause memory-allocation errors.
|
||||
** ('g->version' != NULL flags that the state was completely build)
|
||||
*/
|
||||
static void f_luaopen (lua_State *L, void *ud) {
|
||||
global_State *g = G(L);
|
||||
UNUSED(ud);
|
||||
stack_init(L, L); /* init stack */
|
||||
init_registry(L, g);
|
||||
luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
|
||||
luaT_init(L);
|
||||
luaX_init(L);
|
||||
/* pre-create memory-error message */
|
||||
g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
|
||||
luaC_fix(L, obj2gco(g->memerrmsg)); /* it should never be collected */
|
||||
g->gcrunning = 1; /* allow gc */
|
||||
g->version = lua_version(NULL);
|
||||
luai_userstateopen(L);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** preinitialize a thread with consistent values without allocating
|
||||
** any memory (to avoid errors)
|
||||
*/
|
||||
static void preinit_thread (lua_State *L, global_State *g) {
|
||||
G(L) = g;
|
||||
L->stack = NULL;
|
||||
L->ci = NULL;
|
||||
L->stacksize = 0;
|
||||
L->twups = L; /* thread has no upvalues */
|
||||
L->errorJmp = NULL;
|
||||
L->nCcalls = 0;
|
||||
L->hook = NULL;
|
||||
L->hookmask = 0;
|
||||
L->basehookcount = 0;
|
||||
L->allowhook = 1;
|
||||
resethookcount(L);
|
||||
L->openupval = NULL;
|
||||
L->nny = 1;
|
||||
L->status = LUA_OK;
|
||||
L->errfunc = 0;
|
||||
}
|
||||
|
||||
|
||||
static void close_state (lua_State *L) {
|
||||
global_State *g = G(L);
|
||||
luaF_close(L, L->stack); /* close all upvalues for this thread */
|
||||
luaC_freeallobjects(L); /* collect all objects */
|
||||
if (g->version) /* closing a fully built state? */
|
||||
luai_userstateclose(L);
|
||||
luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size);
|
||||
luaZ_freebuffer(L, &g->buff);
|
||||
freestack(L);
|
||||
lua_assert(gettotalbytes(g) == sizeof(LG));
|
||||
(*g->frealloc)(g->ud, fromstate(L), sizeof(LG), 0); /* free main block */
|
||||
}
|
||||
|
||||
|
||||
LUA_API lua_State *lua_newthread (lua_State *L) {
|
||||
global_State *g = G(L);
|
||||
lua_State *L1;
|
||||
lua_lock(L);
|
||||
luaC_checkGC(L);
|
||||
/* create new thread */
|
||||
L1 = &cast(LX *, luaM_newobject(L, LUA_TTHREAD, sizeof(LX)))->l;
|
||||
L1->marked = luaC_white(g);
|
||||
L1->tt = LUA_TTHREAD;
|
||||
/* link it on list 'allgc' */
|
||||
L1->next = g->allgc;
|
||||
g->allgc = obj2gco(L1);
|
||||
/* anchor it on L stack */
|
||||
setthvalue(L, L->top, L1);
|
||||
api_incr_top(L);
|
||||
preinit_thread(L1, g);
|
||||
L1->hookmask = L->hookmask;
|
||||
L1->basehookcount = L->basehookcount;
|
||||
L1->hook = L->hook;
|
||||
resethookcount(L1);
|
||||
/* initialize L1 extra space */
|
||||
memcpy(lua_getextraspace(L1), lua_getextraspace(g->mainthread),
|
||||
LUA_EXTRASPACE);
|
||||
luai_userstatethread(L, L1);
|
||||
stack_init(L1, L); /* init stack */
|
||||
lua_unlock(L);
|
||||
return L1;
|
||||
}
|
||||
|
||||
|
||||
void luaE_freethread (lua_State *L, lua_State *L1) {
|
||||
LX *l = fromstate(L1);
|
||||
luaF_close(L1, L1->stack); /* close all upvalues for this thread */
|
||||
lua_assert(L1->openupval == NULL);
|
||||
luai_userstatefree(L, L1);
|
||||
freestack(L1);
|
||||
luaM_free(L, l);
|
||||
}
|
||||
|
||||
|
||||
LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) {
|
||||
int i;
|
||||
lua_State *L;
|
||||
global_State *g;
|
||||
LG *l = cast(LG *, (*f)(ud, NULL, LUA_TTHREAD, sizeof(LG)));
|
||||
if (l == NULL) return NULL;
|
||||
L = &l->l.l;
|
||||
g = &l->g;
|
||||
L->next = NULL;
|
||||
L->tt = LUA_TTHREAD;
|
||||
g->currentwhite = bitmask(WHITE0BIT);
|
||||
L->marked = luaC_white(g);
|
||||
preinit_thread(L, g);
|
||||
g->frealloc = f;
|
||||
g->ud = ud;
|
||||
g->mainthread = L;
|
||||
g->seed = makeseed(L);
|
||||
g->gcrunning = 0; /* no GC while building state */
|
||||
g->GCestimate = 0;
|
||||
g->strt.size = g->strt.nuse = 0;
|
||||
g->strt.hash = NULL;
|
||||
setnilvalue(&g->l_registry);
|
||||
luaZ_initbuffer(L, &g->buff);
|
||||
g->panic = NULL;
|
||||
g->version = NULL;
|
||||
g->gcstate = GCSpause;
|
||||
g->gckind = KGC_NORMAL;
|
||||
g->allgc = g->finobj = g->tobefnz = g->fixedgc = NULL;
|
||||
g->sweepgc = NULL;
|
||||
g->gray = g->grayagain = NULL;
|
||||
g->weak = g->ephemeron = g->allweak = NULL;
|
||||
g->twups = NULL;
|
||||
g->totalbytes = sizeof(LG);
|
||||
g->GCdebt = 0;
|
||||
g->gcfinnum = 0;
|
||||
g->gcpause = LUAI_GCPAUSE;
|
||||
g->gcstepmul = LUAI_GCMUL;
|
||||
for (i=0; i < LUA_NUMTAGS; i++) g->mt[i] = NULL;
|
||||
if (luaD_rawrunprotected(L, f_luaopen, NULL) != LUA_OK) {
|
||||
/* memory allocation error: free partial state */
|
||||
close_state(L);
|
||||
L = NULL;
|
||||
}
|
||||
return L;
|
||||
}
|
||||
|
||||
|
||||
LUA_API void lua_close (lua_State *L) {
|
||||
L = G(L)->mainthread; /* only the main thread can be closed */
|
||||
lua_lock(L);
|
||||
close_state(L);
|
||||
}
|
||||
|
||||
|
||||
@ -0,0 +1,182 @@
|
||||
/*
|
||||
** $Id: lstring.c,v 2.45 2014/11/02 19:19:04 roberto Exp $
|
||||
** String table (keeps all strings handled by Lua)
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lstring_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "ldebug.h"
|
||||
#include "ldo.h"
|
||||
#include "lmem.h"
|
||||
#include "lobject.h"
|
||||
#include "lstate.h"
|
||||
#include "lstring.h"
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** Lua will use at most ~(2^LUAI_HASHLIMIT) bytes from a string to
|
||||
** compute its hash
|
||||
*/
|
||||
#if !defined(LUAI_HASHLIMIT)
|
||||
#define LUAI_HASHLIMIT 5
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** equality for long strings
|
||||
*/
|
||||
int luaS_eqlngstr (TString *a, TString *b) {
|
||||
size_t len = a->len;
|
||||
lua_assert(a->tt == LUA_TLNGSTR && b->tt == LUA_TLNGSTR);
|
||||
return (a == b) || /* same instance or... */
|
||||
((len == b->len) && /* equal length and ... */
|
||||
(memcmp(getstr(a), getstr(b), len) == 0)); /* equal contents */
|
||||
}
|
||||
|
||||
|
||||
unsigned int luaS_hash (const char *str, size_t l, unsigned int seed) {
|
||||
unsigned int h = seed ^ cast(unsigned int, l);
|
||||
size_t l1;
|
||||
size_t step = (l >> LUAI_HASHLIMIT) + 1;
|
||||
for (l1 = l; l1 >= step; l1 -= step)
|
||||
h = h ^ ((h<<5) + (h>>2) + cast_byte(str[l1 - 1]));
|
||||
return h;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** resizes the string table
|
||||
*/
|
||||
void luaS_resize (lua_State *L, int newsize) {
|
||||
int i;
|
||||
stringtable *tb = &G(L)->strt;
|
||||
if (newsize > tb->size) { /* grow table if needed */
|
||||
luaM_reallocvector(L, tb->hash, tb->size, newsize, TString *);
|
||||
for (i = tb->size; i < newsize; i++)
|
||||
tb->hash[i] = NULL;
|
||||
}
|
||||
for (i = 0; i < tb->size; i++) { /* rehash */
|
||||
TString *p = tb->hash[i];
|
||||
tb->hash[i] = NULL;
|
||||
while (p) { /* for each node in the list */
|
||||
TString *hnext = p->hnext; /* save next */
|
||||
unsigned int h = lmod(p->hash, newsize); /* new position */
|
||||
p->hnext = tb->hash[h]; /* chain it */
|
||||
tb->hash[h] = p;
|
||||
p = hnext;
|
||||
}
|
||||
}
|
||||
if (newsize < tb->size) { /* shrink table if needed */
|
||||
/* vanishing slice should be empty */
|
||||
lua_assert(tb->hash[newsize] == NULL && tb->hash[tb->size - 1] == NULL);
|
||||
luaM_reallocvector(L, tb->hash, tb->size, newsize, TString *);
|
||||
}
|
||||
tb->size = newsize;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** creates a new string object
|
||||
*/
|
||||
static TString *createstrobj (lua_State *L, const char *str, size_t l,
|
||||
int tag, unsigned int h) {
|
||||
TString *ts;
|
||||
GCObject *o;
|
||||
size_t totalsize; /* total size of TString object */
|
||||
totalsize = sizelstring(l);
|
||||
o = luaC_newobj(L, tag, totalsize);
|
||||
ts = gco2ts(o);
|
||||
ts->len = l;
|
||||
ts->hash = h;
|
||||
ts->extra = 0;
|
||||
memcpy(getaddrstr(ts), str, l * sizeof(char));
|
||||
getaddrstr(ts)[l] = '\0'; /* ending 0 */
|
||||
return ts;
|
||||
}
|
||||
|
||||
|
||||
void luaS_remove (lua_State *L, TString *ts) {
|
||||
stringtable *tb = &G(L)->strt;
|
||||
TString **p = &tb->hash[lmod(ts->hash, tb->size)];
|
||||
while (*p != ts) /* find previous element */
|
||||
p = &(*p)->hnext;
|
||||
*p = (*p)->hnext; /* remove element from its list */
|
||||
tb->nuse--;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** checks whether short string exists and reuses it or creates a new one
|
||||
*/
|
||||
static TString *internshrstr (lua_State *L, const char *str, size_t l) {
|
||||
TString *ts;
|
||||
global_State *g = G(L);
|
||||
unsigned int h = luaS_hash(str, l, g->seed);
|
||||
TString **list = &g->strt.hash[lmod(h, g->strt.size)];
|
||||
for (ts = *list; ts != NULL; ts = ts->hnext) {
|
||||
if (l == ts->len &&
|
||||
(memcmp(str, getstr(ts), l * sizeof(char)) == 0)) {
|
||||
/* found! */
|
||||
if (isdead(g, ts)) /* dead (but not collected yet)? */
|
||||
changewhite(ts); /* resurrect it */
|
||||
return ts;
|
||||
}
|
||||
}
|
||||
if (g->strt.nuse >= g->strt.size && g->strt.size <= MAX_INT/2) {
|
||||
luaS_resize(L, g->strt.size * 2);
|
||||
list = &g->strt.hash[lmod(h, g->strt.size)]; /* recompute with new size */
|
||||
}
|
||||
ts = createstrobj(L, str, l, LUA_TSHRSTR, h);
|
||||
ts->hnext = *list;
|
||||
*list = ts;
|
||||
g->strt.nuse++;
|
||||
return ts;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** new string (with explicit length)
|
||||
*/
|
||||
TString *luaS_newlstr (lua_State *L, const char *str, size_t l) {
|
||||
if (l <= LUAI_MAXSHORTLEN) /* short string? */
|
||||
return internshrstr(L, str, l);
|
||||
else {
|
||||
if (l + 1 > (MAX_SIZE - sizeof(TString))/sizeof(char))
|
||||
luaM_toobig(L);
|
||||
return createstrobj(L, str, l, LUA_TLNGSTR, G(L)->seed);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** new zero-terminated string
|
||||
*/
|
||||
TString *luaS_new (lua_State *L, const char *str) {
|
||||
return luaS_newlstr(L, str, strlen(str));
|
||||
}
|
||||
|
||||
|
||||
Udata *luaS_newudata (lua_State *L, size_t s) {
|
||||
Udata *u;
|
||||
GCObject *o;
|
||||
if (s > MAX_SIZE - sizeof(Udata))
|
||||
luaM_toobig(L);
|
||||
o = luaC_newobj(L, LUA_TUSERDATA, sizeludata(s));
|
||||
u = gco2u(o);
|
||||
u->len = s;
|
||||
u->metatable = NULL;
|
||||
setuservalue(L, u, luaO_nilobject);
|
||||
return u;
|
||||
}
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,650 @@
|
||||
/*
|
||||
** $Id: ltable.c,v 2.99 2014/11/02 19:19:04 roberto Exp $
|
||||
** Lua tables (hash)
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define ltable_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
/*
|
||||
** Implementation of tables (aka arrays, objects, or hash tables).
|
||||
** Tables keep its elements in two parts: an array part and a hash part.
|
||||
** Non-negative integer keys are all candidates to be kept in the array
|
||||
** part. The actual size of the array is the largest 'n' such that at
|
||||
** least half the slots between 0 and n are in use.
|
||||
** Hash uses a mix of chained scatter table with Brent's variation.
|
||||
** A main invariant of these tables is that, if an element is not
|
||||
** in its main position (i.e. the 'original' position that its hash gives
|
||||
** to it), then the colliding element is in its own main position.
|
||||
** Hence even when the load factor reaches 100%, performance remains good.
|
||||
*/
|
||||
|
||||
#include <float.h>
|
||||
#include <math.h>
|
||||
#include <string.h>
|
||||
#include <limits.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "ldebug.h"
|
||||
#include "ldo.h"
|
||||
#include "lgc.h"
|
||||
#include "lmem.h"
|
||||
#include "lobject.h"
|
||||
#include "lstate.h"
|
||||
#include "lstring.h"
|
||||
#include "ltable.h"
|
||||
#include "lvm.h"
|
||||
|
||||
|
||||
/*
|
||||
** Maximum size of array part (MAXASIZE) is 2^MAXABITS. MAXABITS is
|
||||
** the largest integer such that MAXASIZE fits in an unsigned int.
|
||||
*/
|
||||
#define MAXABITS cast_int(sizeof(int) * CHAR_BIT - 1)
|
||||
#define MAXASIZE (1u << MAXABITS)
|
||||
|
||||
/*
|
||||
** Maximum size of hash part is 2^MAXHBITS. MAXHBITS is the largest
|
||||
** integer such that 2^MAXHBITS fits in a signed int. (Note that the
|
||||
** maximum number of elements in a table, 2^MAXABITS + 2^MAXHBITS, still
|
||||
** fits comfortably in an unsigned int.)
|
||||
*/
|
||||
#define MAXHBITS (MAXABITS - 1)
|
||||
|
||||
|
||||
#define hashpow2(t,n) (gnode(t, lmod((n), sizenode(t))))
|
||||
|
||||
#define hashstr(t,str) hashpow2(t, (str)->hash)
|
||||
#define hashboolean(t,p) hashpow2(t, p)
|
||||
#define hashint(t,i) hashpow2(t, i)
|
||||
|
||||
|
||||
/*
|
||||
** for some types, it is better to avoid modulus by power of 2, as
|
||||
** they tend to have many 2 factors.
|
||||
*/
|
||||
#define hashmod(t,n) (gnode(t, ((n) % ((sizenode(t)-1)|1))))
|
||||
|
||||
|
||||
#define hashpointer(t,p) hashmod(t, point2int(p))
|
||||
|
||||
|
||||
#define dummynode (&dummynode_)
|
||||
|
||||
#define isdummy(n) ((n) == dummynode)
|
||||
|
||||
static const Node dummynode_ = {
|
||||
{NILCONSTANT}, /* value */
|
||||
{{NILCONSTANT, 0}} /* key */
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
** Checks whether a float has a value representable as a lua_Integer
|
||||
** (and does the conversion if so)
|
||||
*/
|
||||
static int numisinteger (lua_Number x, lua_Integer *p) {
|
||||
if ((x) == l_floor(x)) /* integral value? */
|
||||
return lua_numbertointeger(x, p); /* try as an integer */
|
||||
else return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** hash for floating-point numbers
|
||||
*/
|
||||
static Node *hashfloat (const Table *t, lua_Number n) {
|
||||
int i;
|
||||
n = l_mathop(frexp)(n, &i) * cast_num(INT_MAX - DBL_MAX_EXP);
|
||||
i += cast_int(n);
|
||||
if (i < 0) {
|
||||
if (cast(unsigned int, i) == 0u - i) /* use unsigned to avoid overflows */
|
||||
i = 0; /* handle INT_MIN */
|
||||
i = -i; /* must be a positive value */
|
||||
}
|
||||
return hashmod(t, i);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** returns the 'main' position of an element in a table (that is, the index
|
||||
** of its hash value)
|
||||
*/
|
||||
static Node *mainposition (const Table *t, const TValue *key) {
|
||||
switch (ttype(key)) {
|
||||
case LUA_TNUMINT:
|
||||
return hashint(t, ivalue(key));
|
||||
case LUA_TNUMFLT:
|
||||
return hashfloat(t, fltvalue(key));
|
||||
case LUA_TSHRSTR:
|
||||
return hashstr(t, tsvalue(key));
|
||||
case LUA_TLNGSTR: {
|
||||
TString *s = tsvalue(key);
|
||||
if (s->extra == 0) { /* no hash? */
|
||||
s->hash = luaS_hash(getstr(s), s->len, s->hash);
|
||||
s->extra = 1; /* now it has its hash */
|
||||
}
|
||||
return hashstr(t, tsvalue(key));
|
||||
}
|
||||
case LUA_TBOOLEAN:
|
||||
return hashboolean(t, bvalue(key));
|
||||
case LUA_TLIGHTUSERDATA:
|
||||
return hashpointer(t, pvalue(key));
|
||||
case LUA_TLCF:
|
||||
return hashpointer(t, fvalue(key));
|
||||
default:
|
||||
return hashpointer(t, gcvalue(key));
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** returns the index for 'key' if 'key' is an appropriate key to live in
|
||||
** the array part of the table, 0 otherwise.
|
||||
*/
|
||||
static unsigned int arrayindex (const TValue *key) {
|
||||
if (ttisinteger(key)) {
|
||||
lua_Integer k = ivalue(key);
|
||||
if (0 < k && (lua_Unsigned)k <= MAXASIZE)
|
||||
return cast(unsigned int, k); /* 'key' is an appropriate array index */
|
||||
}
|
||||
return 0; /* 'key' did not match some condition */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** returns the index of a 'key' for table traversals. First goes all
|
||||
** elements in the array part, then elements in the hash part. The
|
||||
** beginning of a traversal is signaled by 0.
|
||||
*/
|
||||
static unsigned int findindex (lua_State *L, Table *t, StkId key) {
|
||||
unsigned int i;
|
||||
if (ttisnil(key)) return 0; /* first iteration */
|
||||
i = arrayindex(key);
|
||||
if (i != 0 && i <= t->sizearray) /* is 'key' inside array part? */
|
||||
return i; /* yes; that's the index */
|
||||
else {
|
||||
int nx;
|
||||
Node *n = mainposition(t, key);
|
||||
for (;;) { /* check whether 'key' is somewhere in the chain */
|
||||
/* key may be dead already, but it is ok to use it in 'next' */
|
||||
if (luaV_rawequalobj(gkey(n), key) ||
|
||||
(ttisdeadkey(gkey(n)) && iscollectable(key) &&
|
||||
deadvalue(gkey(n)) == gcvalue(key))) {
|
||||
i = cast_int(n - gnode(t, 0)); /* key index in hash table */
|
||||
/* hash elements are numbered after array ones */
|
||||
return (i + 1) + t->sizearray;
|
||||
}
|
||||
nx = gnext(n);
|
||||
if (nx == 0)
|
||||
luaG_runerror(L, "invalid key to 'next'"); /* key not found */
|
||||
else n += nx;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int luaH_next (lua_State *L, Table *t, StkId key) {
|
||||
unsigned int i = findindex(L, t, key); /* find original element */
|
||||
for (; i < t->sizearray; i++) { /* try first array part */
|
||||
if (!ttisnil(&t->array[i])) { /* a non-nil value? */
|
||||
setivalue(key, i + 1);
|
||||
setobj2s(L, key+1, &t->array[i]);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
for (i -= t->sizearray; cast_int(i) < sizenode(t); i++) { /* hash part */
|
||||
if (!ttisnil(gval(gnode(t, i)))) { /* a non-nil value? */
|
||||
setobj2s(L, key, gkey(gnode(t, i)));
|
||||
setobj2s(L, key+1, gval(gnode(t, i)));
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
return 0; /* no more elements */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** {=============================================================
|
||||
** Rehash
|
||||
** ==============================================================
|
||||
*/
|
||||
|
||||
/*
|
||||
** Compute the optimal size for the array part of table 't'. 'nums' is a
|
||||
** "count array" where 'nums[i]' is the number of integers in the table
|
||||
** between 2^(i - 1) + 1 and 2^i. Put in '*narray' the optimal size, and
|
||||
** return the number of elements that will go to that part.
|
||||
*/
|
||||
static unsigned int computesizes (unsigned int nums[], unsigned int *narray) {
|
||||
int i;
|
||||
unsigned int twotoi; /* 2^i */
|
||||
unsigned int a = 0; /* number of elements smaller than 2^i */
|
||||
unsigned int na = 0; /* number of elements to go to array part */
|
||||
unsigned int n = 0; /* optimal size for array part */
|
||||
for (i = 0, twotoi = 1; twotoi/2 < *narray; i++, twotoi *= 2) {
|
||||
if (nums[i] > 0) {
|
||||
a += nums[i];
|
||||
if (a > twotoi/2) { /* more than half elements present? */
|
||||
n = twotoi; /* optimal size (till now) */
|
||||
na = a; /* all elements up to 'n' will go to array part */
|
||||
}
|
||||
}
|
||||
if (a == *narray) break; /* all elements already counted */
|
||||
}
|
||||
*narray = n;
|
||||
lua_assert(*narray/2 <= na && na <= *narray);
|
||||
return na;
|
||||
}
|
||||
|
||||
|
||||
static int countint (const TValue *key, unsigned int *nums) {
|
||||
unsigned int k = arrayindex(key);
|
||||
if (k != 0) { /* is 'key' an appropriate array index? */
|
||||
nums[luaO_ceillog2(k)]++; /* count as such */
|
||||
return 1;
|
||||
}
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static unsigned int numusearray (const Table *t, unsigned int *nums) {
|
||||
int lg;
|
||||
unsigned int ttlg; /* 2^lg */
|
||||
unsigned int ause = 0; /* summation of 'nums' */
|
||||
unsigned int i = 1; /* count to traverse all array keys */
|
||||
/* traverse each slice */
|
||||
for (lg = 0, ttlg = 1; lg <= MAXABITS; lg++, ttlg *= 2) {
|
||||
unsigned int lc = 0; /* counter */
|
||||
unsigned int lim = ttlg;
|
||||
if (lim > t->sizearray) {
|
||||
lim = t->sizearray; /* adjust upper limit */
|
||||
if (i > lim)
|
||||
break; /* no more elements to count */
|
||||
}
|
||||
/* count elements in range (2^(lg - 1), 2^lg] */
|
||||
for (; i <= lim; i++) {
|
||||
if (!ttisnil(&t->array[i-1]))
|
||||
lc++;
|
||||
}
|
||||
nums[lg] += lc;
|
||||
ause += lc;
|
||||
}
|
||||
return ause;
|
||||
}
|
||||
|
||||
|
||||
static int numusehash (const Table *t, unsigned int *nums,
|
||||
unsigned int *pnasize) {
|
||||
int totaluse = 0; /* total number of elements */
|
||||
int ause = 0; /* elements added to 'nums' (can go to array part) */
|
||||
int i = sizenode(t);
|
||||
while (i--) {
|
||||
Node *n = &t->node[i];
|
||||
if (!ttisnil(gval(n))) {
|
||||
ause += countint(gkey(n), nums);
|
||||
totaluse++;
|
||||
}
|
||||
}
|
||||
*pnasize += ause;
|
||||
return totaluse;
|
||||
}
|
||||
|
||||
|
||||
static void setarrayvector (lua_State *L, Table *t, unsigned int size) {
|
||||
unsigned int i;
|
||||
luaM_reallocvector(L, t->array, t->sizearray, size, TValue);
|
||||
for (i=t->sizearray; i<size; i++)
|
||||
setnilvalue(&t->array[i]);
|
||||
t->sizearray = size;
|
||||
}
|
||||
|
||||
|
||||
static void setnodevector (lua_State *L, Table *t, unsigned int size) {
|
||||
int lsize;
|
||||
if (size == 0) { /* no elements to hash part? */
|
||||
t->node = cast(Node *, dummynode); /* use common 'dummynode' */
|
||||
lsize = 0;
|
||||
}
|
||||
else {
|
||||
int i;
|
||||
lsize = luaO_ceillog2(size);
|
||||
if (lsize > MAXHBITS)
|
||||
luaG_runerror(L, "table overflow");
|
||||
size = twoto(lsize);
|
||||
t->node = luaM_newvector(L, size, Node);
|
||||
for (i = 0; i < (int)size; i++) {
|
||||
Node *n = gnode(t, i);
|
||||
gnext(n) = 0;
|
||||
setnilvalue(wgkey(n));
|
||||
setnilvalue(gval(n));
|
||||
}
|
||||
}
|
||||
t->lsizenode = cast_byte(lsize);
|
||||
t->lastfree = gnode(t, size); /* all positions are free */
|
||||
}
|
||||
|
||||
|
||||
void luaH_resize (lua_State *L, Table *t, unsigned int nasize,
|
||||
unsigned int nhsize) {
|
||||
unsigned int i;
|
||||
int j;
|
||||
unsigned int oldasize = t->sizearray;
|
||||
int oldhsize = t->lsizenode;
|
||||
Node *nold = t->node; /* save old hash ... */
|
||||
if (nasize > oldasize) /* array part must grow? */
|
||||
setarrayvector(L, t, nasize);
|
||||
/* create new hash part with appropriate size */
|
||||
setnodevector(L, t, nhsize);
|
||||
if (nasize < oldasize) { /* array part must shrink? */
|
||||
t->sizearray = nasize;
|
||||
/* re-insert elements from vanishing slice */
|
||||
for (i=nasize; i<oldasize; i++) {
|
||||
if (!ttisnil(&t->array[i]))
|
||||
luaH_setint(L, t, i + 1, &t->array[i]);
|
||||
}
|
||||
/* shrink array */
|
||||
luaM_reallocvector(L, t->array, oldasize, nasize, TValue);
|
||||
}
|
||||
/* re-insert elements from hash part */
|
||||
for (j = twoto(oldhsize) - 1; j >= 0; j--) {
|
||||
Node *old = nold + j;
|
||||
if (!ttisnil(gval(old))) {
|
||||
/* doesn't need barrier/invalidate cache, as entry was
|
||||
already present in the table */
|
||||
setobjt2t(L, luaH_set(L, t, gkey(old)), gval(old));
|
||||
}
|
||||
}
|
||||
if (!isdummy(nold))
|
||||
luaM_freearray(L, nold, cast(size_t, twoto(oldhsize))); /* free old array */
|
||||
}
|
||||
|
||||
|
||||
void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize) {
|
||||
int nsize = isdummy(t->node) ? 0 : sizenode(t);
|
||||
luaH_resize(L, t, nasize, nsize);
|
||||
}
|
||||
|
||||
/*
|
||||
** nums[i] = number of keys 'k' where 2^(i - 1) < k <= 2^i
|
||||
*/
|
||||
static void rehash (lua_State *L, Table *t, const TValue *ek) {
|
||||
unsigned int nasize, na;
|
||||
unsigned int nums[MAXABITS + 1];
|
||||
int i;
|
||||
int totaluse;
|
||||
for (i = 0; i <= MAXABITS; i++) nums[i] = 0; /* reset counts */
|
||||
nasize = numusearray(t, nums); /* count keys in array part */
|
||||
totaluse = nasize; /* all those keys are integer keys */
|
||||
totaluse += numusehash(t, nums, &nasize); /* count keys in hash part */
|
||||
/* count extra key */
|
||||
nasize += countint(ek, nums);
|
||||
totaluse++;
|
||||
/* compute new size for array part */
|
||||
na = computesizes(nums, &nasize);
|
||||
/* resize the table to new computed sizes */
|
||||
luaH_resize(L, t, nasize, totaluse - na);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** }=============================================================
|
||||
*/
|
||||
|
||||
|
||||
Table *luaH_new (lua_State *L) {
|
||||
GCObject *o = luaC_newobj(L, LUA_TTABLE, sizeof(Table));
|
||||
Table *t = gco2t(o);
|
||||
t->metatable = NULL;
|
||||
t->flags = cast_byte(~0);
|
||||
t->array = NULL;
|
||||
t->sizearray = 0;
|
||||
setnodevector(L, t, 0);
|
||||
return t;
|
||||
}
|
||||
|
||||
|
||||
void luaH_free (lua_State *L, Table *t) {
|
||||
if (!isdummy(t->node))
|
||||
luaM_freearray(L, t->node, cast(size_t, sizenode(t)));
|
||||
luaM_freearray(L, t->array, t->sizearray);
|
||||
luaM_free(L, t);
|
||||
}
|
||||
|
||||
|
||||
static Node *getfreepos (Table *t) {
|
||||
while (t->lastfree > t->node) {
|
||||
t->lastfree--;
|
||||
if (ttisnil(gkey(t->lastfree)))
|
||||
return t->lastfree;
|
||||
}
|
||||
return NULL; /* could not find a free place */
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** inserts a new key into a hash table; first, check whether key's main
|
||||
** position is free. If not, check whether colliding node is in its main
|
||||
** position or not: if it is not, move colliding node to an empty place and
|
||||
** put new key in its main position; otherwise (colliding node is in its main
|
||||
** position), new key goes to an empty position.
|
||||
*/
|
||||
TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) {
|
||||
Node *mp;
|
||||
TValue aux;
|
||||
if (ttisnil(key)) luaG_runerror(L, "table index is nil");
|
||||
else if (ttisfloat(key)) {
|
||||
lua_Number n = fltvalue(key);
|
||||
lua_Integer k;
|
||||
if (luai_numisnan(n))
|
||||
luaG_runerror(L, "table index is NaN");
|
||||
if (numisinteger(n, &k)) { /* index is int? */
|
||||
setivalue(&aux, k);
|
||||
key = &aux; /* insert it as an integer */
|
||||
}
|
||||
}
|
||||
mp = mainposition(t, key);
|
||||
if (!ttisnil(gval(mp)) || isdummy(mp)) { /* main position is taken? */
|
||||
Node *othern;
|
||||
Node *f = getfreepos(t); /* get a free place */
|
||||
if (f == NULL) { /* cannot find a free place? */
|
||||
rehash(L, t, key); /* grow table */
|
||||
/* whatever called 'newkey' takes care of TM cache and GC barrier */
|
||||
return luaH_set(L, t, key); /* insert key into grown table */
|
||||
}
|
||||
lua_assert(!isdummy(f));
|
||||
othern = mainposition(t, gkey(mp));
|
||||
if (othern != mp) { /* is colliding node out of its main position? */
|
||||
/* yes; move colliding node into free position */
|
||||
while (othern + gnext(othern) != mp) /* find previous */
|
||||
othern += gnext(othern);
|
||||
gnext(othern) = cast_int(f - othern); /* rechain to point to 'f' */
|
||||
*f = *mp; /* copy colliding node into free pos. (mp->next also goes) */
|
||||
if (gnext(mp) != 0) {
|
||||
gnext(f) += cast_int(mp - f); /* correct 'next' */
|
||||
gnext(mp) = 0; /* now 'mp' is free */
|
||||
}
|
||||
setnilvalue(gval(mp));
|
||||
}
|
||||
else { /* colliding node is in its own main position */
|
||||
/* new node will go into free position */
|
||||
if (gnext(mp) != 0)
|
||||
gnext(f) = cast_int((mp + gnext(mp)) - f); /* chain new position */
|
||||
else lua_assert(gnext(f) == 0);
|
||||
gnext(mp) = cast_int(f - mp);
|
||||
mp = f;
|
||||
}
|
||||
}
|
||||
setkey(L, &mp->i_key, key);
|
||||
luaC_barrierback(L, t, key);
|
||||
lua_assert(ttisnil(gval(mp)));
|
||||
return gval(mp);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** search function for integers
|
||||
*/
|
||||
const TValue *luaH_getint (Table *t, lua_Integer key) {
|
||||
/* (1 <= key && key <= t->sizearray) */
|
||||
if (l_castS2U(key - 1) < t->sizearray)
|
||||
return &t->array[key - 1];
|
||||
else {
|
||||
Node *n = hashint(t, key);
|
||||
for (;;) { /* check whether 'key' is somewhere in the chain */
|
||||
if (ttisinteger(gkey(n)) && ivalue(gkey(n)) == key)
|
||||
return gval(n); /* that's it */
|
||||
else {
|
||||
int nx = gnext(n);
|
||||
if (nx == 0) break;
|
||||
n += nx;
|
||||
}
|
||||
};
|
||||
return luaO_nilobject;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** search function for short strings
|
||||
*/
|
||||
const TValue *luaH_getstr (Table *t, TString *key) {
|
||||
Node *n = hashstr(t, key);
|
||||
lua_assert(key->tt == LUA_TSHRSTR);
|
||||
for (;;) { /* check whether 'key' is somewhere in the chain */
|
||||
const TValue *k = gkey(n);
|
||||
if (ttisshrstring(k) && eqshrstr(tsvalue(k), key))
|
||||
return gval(n); /* that's it */
|
||||
else {
|
||||
int nx = gnext(n);
|
||||
if (nx == 0) break;
|
||||
n += nx;
|
||||
}
|
||||
};
|
||||
return luaO_nilobject;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** main search function
|
||||
*/
|
||||
const TValue *luaH_get (Table *t, const TValue *key) {
|
||||
switch (ttype(key)) {
|
||||
case LUA_TSHRSTR: return luaH_getstr(t, tsvalue(key));
|
||||
case LUA_TNUMINT: return luaH_getint(t, ivalue(key));
|
||||
case LUA_TNIL: return luaO_nilobject;
|
||||
case LUA_TNUMFLT: {
|
||||
lua_Integer k;
|
||||
if (numisinteger(fltvalue(key), &k)) /* index is int? */
|
||||
return luaH_getint(t, k); /* use specialized version */
|
||||
/* else go through */
|
||||
}
|
||||
default: {
|
||||
Node *n = mainposition(t, key);
|
||||
for (;;) { /* check whether 'key' is somewhere in the chain */
|
||||
if (luaV_rawequalobj(gkey(n), key))
|
||||
return gval(n); /* that's it */
|
||||
else {
|
||||
int nx = gnext(n);
|
||||
if (nx == 0) break;
|
||||
n += nx;
|
||||
}
|
||||
};
|
||||
return luaO_nilobject;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** beware: when using this function you probably need to check a GC
|
||||
** barrier and invalidate the TM cache.
|
||||
*/
|
||||
TValue *luaH_set (lua_State *L, Table *t, const TValue *key) {
|
||||
const TValue *p = luaH_get(t, key);
|
||||
if (p != luaO_nilobject)
|
||||
return cast(TValue *, p);
|
||||
else return luaH_newkey(L, t, key);
|
||||
}
|
||||
|
||||
|
||||
void luaH_setint (lua_State *L, Table *t, lua_Integer key, TValue *value) {
|
||||
const TValue *p = luaH_getint(t, key);
|
||||
TValue *cell;
|
||||
if (p != luaO_nilobject)
|
||||
cell = cast(TValue *, p);
|
||||
else {
|
||||
TValue k;
|
||||
setivalue(&k, key);
|
||||
cell = luaH_newkey(L, t, &k);
|
||||
}
|
||||
setobj2t(L, cell, value);
|
||||
}
|
||||
|
||||
|
||||
static int unbound_search (Table *t, unsigned int j) {
|
||||
unsigned int i = j; /* i is zero or a present index */
|
||||
j++;
|
||||
/* find 'i' and 'j' such that i is present and j is not */
|
||||
while (!ttisnil(luaH_getint(t, j))) {
|
||||
i = j;
|
||||
if (j > cast(unsigned int, MAX_INT)/2) { /* overflow? */
|
||||
/* table was built with bad purposes: resort to linear search */
|
||||
i = 1;
|
||||
while (!ttisnil(luaH_getint(t, i))) i++;
|
||||
return i - 1;
|
||||
}
|
||||
j *= 2;
|
||||
}
|
||||
/* now do a binary search between them */
|
||||
while (j - i > 1) {
|
||||
unsigned int m = (i+j)/2;
|
||||
if (ttisnil(luaH_getint(t, m))) j = m;
|
||||
else i = m;
|
||||
}
|
||||
return i;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Try to find a boundary in table 't'. A 'boundary' is an integer index
|
||||
** such that t[i] is non-nil and t[i+1] is nil (and 0 if t[1] is nil).
|
||||
*/
|
||||
int luaH_getn (Table *t) {
|
||||
unsigned int j = t->sizearray;
|
||||
if (j > 0 && ttisnil(&t->array[j - 1])) {
|
||||
/* there is a boundary in the array part: (binary) search for it */
|
||||
unsigned int i = 0;
|
||||
while (j - i > 1) {
|
||||
unsigned int m = (i+j)/2;
|
||||
if (ttisnil(&t->array[m - 1])) j = m;
|
||||
else i = m;
|
||||
}
|
||||
return i;
|
||||
}
|
||||
/* else must find a boundary in hash part */
|
||||
else if (isdummy(t->node)) /* hash part is empty? */
|
||||
return j; /* that is easy... */
|
||||
else return unbound_search(t, j);
|
||||
}
|
||||
|
||||
|
||||
|
||||
#if defined(LUA_DEBUG)
|
||||
|
||||
Node *luaH_mainposition (const Table *t, const TValue *key) {
|
||||
return mainposition(t, key);
|
||||
}
|
||||
|
||||
int luaH_isdummy (Node *n) { return isdummy(n); }
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,357 @@
|
||||
/*
|
||||
** $Id: ltablib.c,v 1.79 2014/11/02 19:19:04 roberto Exp $
|
||||
** Library for Table Manipulation
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define ltablib_c
|
||||
#define LUA_LIB
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <limits.h>
|
||||
#include <stddef.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lauxlib.h"
|
||||
#include "lualib.h"
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** Structure with table-access functions
|
||||
*/
|
||||
typedef struct {
|
||||
int (*geti) (lua_State *L, int idx, lua_Integer n);
|
||||
void (*seti) (lua_State *L, int idx, lua_Integer n);
|
||||
} TabA;
|
||||
|
||||
|
||||
/*
|
||||
** Check that 'arg' has a table and set access functions in 'ta' to raw
|
||||
** or non-raw according to the presence of corresponding metamethods.
|
||||
*/
|
||||
static void checktab (lua_State *L, int arg, TabA *ta) {
|
||||
ta->geti = NULL; ta->seti = NULL;
|
||||
if (lua_getmetatable(L, arg)) {
|
||||
lua_pushliteral(L, "__index"); /* 'index' metamethod */
|
||||
if (lua_rawget(L, -2) != LUA_TNIL)
|
||||
ta->geti = lua_geti;
|
||||
lua_pushliteral(L, "__newindex"); /* 'newindex' metamethod */
|
||||
if (lua_rawget(L, -3) != LUA_TNIL)
|
||||
ta->seti = lua_seti;
|
||||
lua_pop(L, 3); /* pop metatable plus both metamethods */
|
||||
}
|
||||
if (ta->geti == NULL || ta->seti == NULL) {
|
||||
luaL_checktype(L, arg, LUA_TTABLE); /* must be table for raw methods */
|
||||
if (ta->geti == NULL) ta->geti = lua_rawgeti;
|
||||
if (ta->seti == NULL) ta->seti = lua_rawseti;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#define aux_getn(L,n,ta) (checktab(L, n, ta), luaL_len(L, n))
|
||||
|
||||
|
||||
#if defined(LUA_COMPAT_MAXN)
|
||||
static int maxn (lua_State *L) {
|
||||
lua_Number max = 0;
|
||||
luaL_checktype(L, 1, LUA_TTABLE);
|
||||
lua_pushnil(L); /* first key */
|
||||
while (lua_next(L, 1)) {
|
||||
lua_pop(L, 1); /* remove value */
|
||||
if (lua_type(L, -1) == LUA_TNUMBER) {
|
||||
lua_Number v = lua_tonumber(L, -1);
|
||||
if (v > max) max = v;
|
||||
}
|
||||
}
|
||||
lua_pushnumber(L, max);
|
||||
return 1;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
static int tinsert (lua_State *L) {
|
||||
TabA ta;
|
||||
lua_Integer e = aux_getn(L, 1, &ta) + 1; /* first empty element */
|
||||
lua_Integer pos; /* where to insert new element */
|
||||
switch (lua_gettop(L)) {
|
||||
case 2: { /* called with only 2 arguments */
|
||||
pos = e; /* insert new element at the end */
|
||||
break;
|
||||
}
|
||||
case 3: {
|
||||
lua_Integer i;
|
||||
pos = luaL_checkinteger(L, 2); /* 2nd argument is the position */
|
||||
luaL_argcheck(L, 1 <= pos && pos <= e, 2, "position out of bounds");
|
||||
for (i = e; i > pos; i--) { /* move up elements */
|
||||
(*ta.geti)(L, 1, i - 1);
|
||||
(*ta.seti)(L, 1, i); /* t[i] = t[i - 1] */
|
||||
}
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
return luaL_error(L, "wrong number of arguments to 'insert'");
|
||||
}
|
||||
}
|
||||
(*ta.seti)(L, 1, pos); /* t[pos] = v */
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int tremove (lua_State *L) {
|
||||
TabA ta;
|
||||
lua_Integer size = aux_getn(L, 1, &ta);
|
||||
lua_Integer pos = luaL_optinteger(L, 2, size);
|
||||
if (pos != size) /* validate 'pos' if given */
|
||||
luaL_argcheck(L, 1 <= pos && pos <= size + 1, 1, "position out of bounds");
|
||||
(*ta.geti)(L, 1, pos); /* result = t[pos] */
|
||||
for ( ; pos < size; pos++) {
|
||||
(*ta.geti)(L, 1, pos + 1);
|
||||
(*ta.seti)(L, 1, pos); /* t[pos] = t[pos + 1] */
|
||||
}
|
||||
lua_pushnil(L);
|
||||
(*ta.seti)(L, 1, pos); /* t[pos] = nil */
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int tmove (lua_State *L) {
|
||||
TabA ta;
|
||||
lua_Integer f = luaL_checkinteger(L, 2);
|
||||
lua_Integer e = luaL_checkinteger(L, 3);
|
||||
lua_Integer t = luaL_checkinteger(L, 4);
|
||||
int tt = !lua_isnoneornil(L, 5) ? 5 : 1; /* destination table */
|
||||
/* the following restriction avoids several problems with overflows */
|
||||
luaL_argcheck(L, f > 0, 2, "initial position must be positive");
|
||||
if (e >= f) { /* otherwise, nothing to move */
|
||||
lua_Integer n, i;
|
||||
ta.geti = (luaL_getmetafield(L, 1, "__index") == LUA_TNIL)
|
||||
? (luaL_checktype(L, 1, LUA_TTABLE), lua_rawgeti)
|
||||
: lua_geti;
|
||||
ta.seti = (luaL_getmetafield(L, tt, "__newindex") == LUA_TNIL)
|
||||
? (luaL_checktype(L, tt, LUA_TTABLE), lua_rawseti)
|
||||
: lua_seti;
|
||||
n = e - f + 1; /* number of elements to move */
|
||||
if (t > f) {
|
||||
for (i = n - 1; i >= 0; i--) {
|
||||
(*ta.geti)(L, 1, f + i);
|
||||
(*ta.seti)(L, tt, t + i);
|
||||
}
|
||||
}
|
||||
else {
|
||||
for (i = 0; i < n; i++) {
|
||||
(*ta.geti)(L, 1, f + i);
|
||||
(*ta.seti)(L, tt, t + i);
|
||||
}
|
||||
}
|
||||
}
|
||||
lua_pushvalue(L, tt); /* return "to table" */
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static void addfield (lua_State *L, luaL_Buffer *b, TabA *ta, lua_Integer i) {
|
||||
(*ta->geti)(L, 1, i);
|
||||
if (!lua_isstring(L, -1))
|
||||
luaL_error(L, "invalid value (%s) at index %d in table for 'concat'",
|
||||
luaL_typename(L, -1), i);
|
||||
luaL_addvalue(b);
|
||||
}
|
||||
|
||||
|
||||
static int tconcat (lua_State *L) {
|
||||
TabA ta;
|
||||
luaL_Buffer b;
|
||||
size_t lsep;
|
||||
lua_Integer i, last;
|
||||
const char *sep = luaL_optlstring(L, 2, "", &lsep);
|
||||
checktab(L, 1, &ta);
|
||||
i = luaL_optinteger(L, 3, 1);
|
||||
last = luaL_opt(L, luaL_checkinteger, 4, luaL_len(L, 1));
|
||||
luaL_buffinit(L, &b);
|
||||
for (; i < last; i++) {
|
||||
addfield(L, &b, &ta, i);
|
||||
luaL_addlstring(&b, sep, lsep);
|
||||
}
|
||||
if (i == last) /* add last value (if interval was not empty) */
|
||||
addfield(L, &b, &ta, i);
|
||||
luaL_pushresult(&b);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Pack/unpack
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
static int pack (lua_State *L) {
|
||||
int i;
|
||||
int n = lua_gettop(L); /* number of elements to pack */
|
||||
lua_createtable(L, n, 1); /* create result table */
|
||||
lua_insert(L, 1); /* put it at index 1 */
|
||||
for (i = n; i >= 1; i--) /* assign elements */
|
||||
lua_rawseti(L, 1, i);
|
||||
lua_pushinteger(L, n);
|
||||
lua_setfield(L, 1, "n"); /* t.n = number of elements */
|
||||
return 1; /* return table */
|
||||
}
|
||||
|
||||
|
||||
static int unpack (lua_State *L) {
|
||||
TabA ta;
|
||||
lua_Integer i, e;
|
||||
lua_Unsigned n;
|
||||
checktab(L, 1, &ta);
|
||||
i = luaL_optinteger(L, 2, 1);
|
||||
e = luaL_opt(L, luaL_checkinteger, 3, luaL_len(L, 1));
|
||||
if (i > e) return 0; /* empty range */
|
||||
n = (lua_Unsigned)e - i; /* number of elements minus 1 (avoid overflows) */
|
||||
if (n >= (unsigned int)INT_MAX || !lua_checkstack(L, (int)(++n)))
|
||||
return luaL_error(L, "too many results to unpack");
|
||||
do { /* must have at least one element */
|
||||
(*ta.geti)(L, 1, i); /* push arg[i..e] */
|
||||
} while (i++ < e);
|
||||
|
||||
return (int)n;
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** {======================================================
|
||||
** Quicksort
|
||||
** (based on 'Algorithms in MODULA-3', Robert Sedgewick;
|
||||
** Addison-Wesley, 1993.)
|
||||
** =======================================================
|
||||
*/
|
||||
|
||||
|
||||
static void set2 (lua_State *L, TabA *ta, int i, int j) {
|
||||
(*ta->seti)(L, 1, i);
|
||||
(*ta->seti)(L, 1, j);
|
||||
}
|
||||
|
||||
static int sort_comp (lua_State *L, int a, int b) {
|
||||
if (!lua_isnil(L, 2)) { /* function? */
|
||||
int res;
|
||||
lua_pushvalue(L, 2);
|
||||
lua_pushvalue(L, a-1); /* -1 to compensate function */
|
||||
lua_pushvalue(L, b-2); /* -2 to compensate function and 'a' */
|
||||
lua_call(L, 2, 1);
|
||||
res = lua_toboolean(L, -1);
|
||||
lua_pop(L, 1);
|
||||
return res;
|
||||
}
|
||||
else /* a < b? */
|
||||
return lua_compare(L, a, b, LUA_OPLT);
|
||||
}
|
||||
|
||||
static void auxsort (lua_State *L, TabA *ta, int l, int u) {
|
||||
while (l < u) { /* for tail recursion */
|
||||
int i, j;
|
||||
/* sort elements a[l], a[(l+u)/2] and a[u] */
|
||||
(*ta->geti)(L, 1, l);
|
||||
(*ta->geti)(L, 1, u);
|
||||
if (sort_comp(L, -1, -2)) /* a[u] < a[l]? */
|
||||
set2(L, ta, l, u); /* swap a[l] - a[u] */
|
||||
else
|
||||
lua_pop(L, 2);
|
||||
if (u-l == 1) break; /* only 2 elements */
|
||||
i = (l+u)/2;
|
||||
(*ta->geti)(L, 1, i);
|
||||
(*ta->geti)(L, 1, l);
|
||||
if (sort_comp(L, -2, -1)) /* a[i]<a[l]? */
|
||||
set2(L, ta, i, l);
|
||||
else {
|
||||
lua_pop(L, 1); /* remove a[l] */
|
||||
(*ta->geti)(L, 1, u);
|
||||
if (sort_comp(L, -1, -2)) /* a[u]<a[i]? */
|
||||
set2(L, ta, i, u);
|
||||
else
|
||||
lua_pop(L, 2);
|
||||
}
|
||||
if (u-l == 2) break; /* only 3 elements */
|
||||
(*ta->geti)(L, 1, i); /* Pivot */
|
||||
lua_pushvalue(L, -1);
|
||||
(*ta->geti)(L, 1, u-1);
|
||||
set2(L, ta, i, u-1);
|
||||
/* a[l] <= P == a[u-1] <= a[u], only need to sort from l+1 to u-2 */
|
||||
i = l; j = u-1;
|
||||
for (;;) { /* invariant: a[l..i] <= P <= a[j..u] */
|
||||
/* repeat ++i until a[i] >= P */
|
||||
while ((*ta->geti)(L, 1, ++i), sort_comp(L, -1, -2)) {
|
||||
if (i>=u) luaL_error(L, "invalid order function for sorting");
|
||||
lua_pop(L, 1); /* remove a[i] */
|
||||
}
|
||||
/* repeat --j until a[j] <= P */
|
||||
while ((*ta->geti)(L, 1, --j), sort_comp(L, -3, -1)) {
|
||||
if (j<=l) luaL_error(L, "invalid order function for sorting");
|
||||
lua_pop(L, 1); /* remove a[j] */
|
||||
}
|
||||
if (j<i) {
|
||||
lua_pop(L, 3); /* pop pivot, a[i], a[j] */
|
||||
break;
|
||||
}
|
||||
set2(L, ta, i, j);
|
||||
}
|
||||
(*ta->geti)(L, 1, u-1);
|
||||
(*ta->geti)(L, 1, i);
|
||||
set2(L, ta, u-1, i); /* swap pivot (a[u-1]) with a[i] */
|
||||
/* a[l..i-1] <= a[i] == P <= a[i+1..u] */
|
||||
/* adjust so that smaller half is in [j..i] and larger one in [l..u] */
|
||||
if (i-l < u-i) {
|
||||
j=l; i=i-1; l=i+2;
|
||||
}
|
||||
else {
|
||||
j=i+1; i=u; u=j-2;
|
||||
}
|
||||
auxsort(L, ta, j, i); /* call recursively the smaller one */
|
||||
} /* repeat the routine for the larger one */
|
||||
}
|
||||
|
||||
static int sort (lua_State *L) {
|
||||
TabA ta;
|
||||
int n = (int)aux_getn(L, 1, &ta);
|
||||
luaL_checkstack(L, 50, ""); /* assume array is smaller than 2^50 */
|
||||
if (!lua_isnoneornil(L, 2)) /* is there a 2nd argument? */
|
||||
luaL_checktype(L, 2, LUA_TFUNCTION);
|
||||
lua_settop(L, 2); /* make sure there are two arguments */
|
||||
auxsort(L, &ta, 1, n);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* }====================================================== */
|
||||
|
||||
|
||||
static const luaL_Reg tab_funcs[] = {
|
||||
{"concat", tconcat},
|
||||
#if defined(LUA_COMPAT_MAXN)
|
||||
{"maxn", maxn},
|
||||
#endif
|
||||
{"insert", tinsert},
|
||||
{"pack", pack},
|
||||
{"unpack", unpack},
|
||||
{"remove", tremove},
|
||||
{"move", tmove},
|
||||
{"sort", sort},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
LUAMOD_API int luaopen_table (lua_State *L) {
|
||||
luaL_newlib(L, tab_funcs);
|
||||
#if defined(LUA_COMPAT_UNPACK)
|
||||
/* _G.unpack = table.unpack */
|
||||
lua_getfield(L, -1, "unpack");
|
||||
lua_setglobal(L, "unpack");
|
||||
#endif
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -0,0 +1,143 @@
|
||||
/*
|
||||
** $Id: ltm.c,v 2.33 2014/11/21 12:15:57 roberto Exp $
|
||||
** Tag methods
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define ltm_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "ldebug.h"
|
||||
#include "ldo.h"
|
||||
#include "lobject.h"
|
||||
#include "lstate.h"
|
||||
#include "lstring.h"
|
||||
#include "ltable.h"
|
||||
#include "ltm.h"
|
||||
#include "lvm.h"
|
||||
|
||||
|
||||
static const char udatatypename[] = "userdata";
|
||||
|
||||
LUAI_DDEF const char *const luaT_typenames_[LUA_TOTALTAGS] = {
|
||||
"no value",
|
||||
"nil", "boolean", udatatypename, "number",
|
||||
"string", "table", "function", udatatypename, "thread",
|
||||
"proto" /* this last case is used for tests only */
|
||||
};
|
||||
|
||||
|
||||
void luaT_init (lua_State *L) {
|
||||
static const char *const luaT_eventname[] = { /* ORDER TM */
|
||||
"__index", "__newindex",
|
||||
"__gc", "__mode", "__len", "__eq",
|
||||
"__add", "__sub", "__mul", "__mod", "__pow",
|
||||
"__div", "__idiv",
|
||||
"__band", "__bor", "__bxor", "__shl", "__shr",
|
||||
"__unm", "__bnot", "__lt", "__le",
|
||||
"__concat", "__call"
|
||||
};
|
||||
int i;
|
||||
for (i=0; i<TM_N; i++) {
|
||||
G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
|
||||
luaC_fix(L, obj2gco(G(L)->tmname[i])); /* never collect these names */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** function to be used with macro "fasttm": optimized for absence of
|
||||
** tag methods
|
||||
*/
|
||||
const TValue *luaT_gettm (Table *events, TMS event, TString *ename) {
|
||||
const TValue *tm = luaH_getstr(events, ename);
|
||||
lua_assert(event <= TM_EQ);
|
||||
if (ttisnil(tm)) { /* no tag method? */
|
||||
events->flags |= cast_byte(1u<<event); /* cache this fact */
|
||||
return NULL;
|
||||
}
|
||||
else return tm;
|
||||
}
|
||||
|
||||
|
||||
const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
|
||||
Table *mt;
|
||||
switch (ttnov(o)) {
|
||||
case LUA_TTABLE:
|
||||
mt = hvalue(o)->metatable;
|
||||
break;
|
||||
case LUA_TUSERDATA:
|
||||
mt = uvalue(o)->metatable;
|
||||
break;
|
||||
default:
|
||||
mt = G(L)->mt[ttnov(o)];
|
||||
}
|
||||
return (mt ? luaH_getstr(mt, G(L)->tmname[event]) : luaO_nilobject);
|
||||
}
|
||||
|
||||
|
||||
void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
|
||||
const TValue *p2, TValue *p3, int hasres) {
|
||||
ptrdiff_t result = savestack(L, p3);
|
||||
setobj2s(L, L->top++, f); /* push function (assume EXTRA_STACK) */
|
||||
setobj2s(L, L->top++, p1); /* 1st argument */
|
||||
setobj2s(L, L->top++, p2); /* 2nd argument */
|
||||
if (!hasres) /* no result? 'p3' is third argument */
|
||||
setobj2s(L, L->top++, p3); /* 3rd argument */
|
||||
/* metamethod may yield only when called from Lua code */
|
||||
luaD_call(L, L->top - (4 - hasres), hasres, isLua(L->ci));
|
||||
if (hasres) { /* if has result, move it to its place */
|
||||
p3 = restorestack(L, result);
|
||||
setobjs2s(L, p3, --L->top);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int luaT_callbinTM (lua_State *L, const TValue *p1, const TValue *p2,
|
||||
StkId res, TMS event) {
|
||||
const TValue *tm = luaT_gettmbyobj(L, p1, event); /* try first operand */
|
||||
if (ttisnil(tm))
|
||||
tm = luaT_gettmbyobj(L, p2, event); /* try second operand */
|
||||
if (ttisnil(tm)) return 0;
|
||||
luaT_callTM(L, tm, p1, p2, res, 1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2,
|
||||
StkId res, TMS event) {
|
||||
if (!luaT_callbinTM(L, p1, p2, res, event)) {
|
||||
switch (event) {
|
||||
case TM_CONCAT:
|
||||
luaG_concaterror(L, p1, p2);
|
||||
case TM_BAND: case TM_BOR: case TM_BXOR:
|
||||
case TM_SHL: case TM_SHR: case TM_BNOT: {
|
||||
lua_Number dummy;
|
||||
if (tonumber(p1, &dummy) && tonumber(p2, &dummy))
|
||||
luaG_tointerror(L, p1, p2);
|
||||
else
|
||||
luaG_opinterror(L, p1, p2, "perform bitwise operation on");
|
||||
/* else go through */
|
||||
}
|
||||
default:
|
||||
luaG_opinterror(L, p1, p2, "perform arithmetic on");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int luaT_callorderTM (lua_State *L, const TValue *p1, const TValue *p2,
|
||||
TMS event) {
|
||||
if (!luaT_callbinTM(L, p1, p2, L->top, event))
|
||||
return -1; /* no metamethod */
|
||||
else
|
||||
return !l_isfalse(L->top);
|
||||
}
|
||||
|
||||
@ -0,0 +1,611 @@
|
||||
/*
|
||||
** $Id: lua.c,v 1.222 2014/11/11 19:41:27 roberto Exp $
|
||||
** Lua stand-alone interpreter
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lua_c
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <signal.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lauxlib.h"
|
||||
#include "lualib.h"
|
||||
|
||||
|
||||
#if !defined(LUA_PROMPT)
|
||||
#define LUA_PROMPT "> "
|
||||
#define LUA_PROMPT2 ">> "
|
||||
#endif
|
||||
|
||||
#if !defined(LUA_PROGNAME)
|
||||
#define LUA_PROGNAME "lua"
|
||||
#endif
|
||||
|
||||
#if !defined(LUA_MAXINPUT)
|
||||
#define LUA_MAXINPUT 512
|
||||
#endif
|
||||
|
||||
#if !defined(LUA_INIT_VAR)
|
||||
#define LUA_INIT_VAR "LUA_INIT"
|
||||
#endif
|
||||
|
||||
#define LUA_INITVARVERSION \
|
||||
LUA_INIT_VAR "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
|
||||
|
||||
|
||||
/*
|
||||
** lua_stdin_is_tty detects whether the standard input is a 'tty' (that
|
||||
** is, whether we're running lua interactively).
|
||||
*/
|
||||
#if !defined(lua_stdin_is_tty) /* { */
|
||||
|
||||
#if defined(LUA_USE_POSIX) /* { */
|
||||
|
||||
#include <unistd.h>
|
||||
#define lua_stdin_is_tty() isatty(0)
|
||||
|
||||
#elif defined(LUA_USE_WINDOWS) /* }{ */
|
||||
|
||||
#include <io.h>
|
||||
#define lua_stdin_is_tty() _isatty(_fileno(stdin))
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
/* ISO C definition */
|
||||
#define lua_stdin_is_tty() 1 /* assume stdin is a tty */
|
||||
|
||||
#endif /* } */
|
||||
|
||||
#endif /* } */
|
||||
|
||||
|
||||
/*
|
||||
** lua_readline defines how to show a prompt and then read a line from
|
||||
** the standard input.
|
||||
** lua_saveline defines how to "save" a read line in a "history".
|
||||
** lua_freeline defines how to free a line read by lua_readline.
|
||||
*/
|
||||
#if !defined(lua_readline) /* { */
|
||||
|
||||
#if defined(LUA_USE_READLINE) /* { */
|
||||
|
||||
#include <readline/readline.h>
|
||||
#include <readline/history.h>
|
||||
#define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL)
|
||||
#define lua_saveline(L,idx) \
|
||||
if (lua_rawlen(L,idx) > 0) /* non-empty line? */ \
|
||||
add_history(lua_tostring(L, idx)); /* add it to history */
|
||||
#define lua_freeline(L,b) ((void)L, free(b))
|
||||
|
||||
#else /* }{ */
|
||||
|
||||
#define lua_readline(L,b,p) \
|
||||
((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \
|
||||
fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */
|
||||
#define lua_saveline(L,idx) { (void)L; (void)idx; }
|
||||
#define lua_freeline(L,b) { (void)L; (void)b; }
|
||||
|
||||
#endif /* } */
|
||||
|
||||
#endif /* } */
|
||||
|
||||
|
||||
|
||||
|
||||
static lua_State *globalL = NULL;
|
||||
|
||||
static const char *progname = LUA_PROGNAME;
|
||||
|
||||
|
||||
/*
|
||||
** Hook set by signal function to stop the interpreter.
|
||||
*/
|
||||
static void lstop (lua_State *L, lua_Debug *ar) {
|
||||
(void)ar; /* unused arg. */
|
||||
lua_sethook(L, NULL, 0, 0); /* reset hook */
|
||||
luaL_error(L, "interrupted!");
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Function to be called at a C signal. Because a C signal cannot
|
||||
** just change a Lua state (as there is no proper synchronization),
|
||||
** this function only sets a hook that, when called, will stop the
|
||||
** interpreter.
|
||||
*/
|
||||
static void laction (int i) {
|
||||
signal(i, SIG_DFL); /* if another SIGINT happens, terminate process */
|
||||
lua_sethook(globalL, lstop, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1);
|
||||
}
|
||||
|
||||
|
||||
static void print_usage (const char *badoption) {
|
||||
lua_writestringerror("%s: ", progname);
|
||||
if (badoption[1] == 'e' || badoption[1] == 'l')
|
||||
lua_writestringerror("'%s' needs argument\n", badoption);
|
||||
else
|
||||
lua_writestringerror("unrecognized option '%s'\n", badoption);
|
||||
lua_writestringerror(
|
||||
"usage: %s [options] [script [args]]\n"
|
||||
"Available options are:\n"
|
||||
" -e stat execute string 'stat'\n"
|
||||
" -i enter interactive mode after executing 'script'\n"
|
||||
" -l name require library 'name'\n"
|
||||
" -v show version information\n"
|
||||
" -E ignore environment variables\n"
|
||||
" -- stop handling options\n"
|
||||
" - stop handling options and execute stdin\n"
|
||||
,
|
||||
progname);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Prints an error message, adding the program name in front of it
|
||||
** (if present)
|
||||
*/
|
||||
static void l_message (const char *pname, const char *msg) {
|
||||
if (pname) lua_writestringerror("%s: ", pname);
|
||||
lua_writestringerror("%s\n", msg);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Check whether 'status' is not OK and, if so, prints the error
|
||||
** message on the top of the stack. It assumes that the error object
|
||||
** is a string, as it was either generated by Lua or by 'msghandler'.
|
||||
*/
|
||||
static int report (lua_State *L, int status) {
|
||||
if (status != LUA_OK) {
|
||||
const char *msg = lua_tostring(L, -1);
|
||||
l_message(progname, msg);
|
||||
lua_pop(L, 1); /* remove message */
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Message handler used to run all chunks
|
||||
*/
|
||||
static int msghandler (lua_State *L) {
|
||||
const char *msg = lua_tostring(L, 1);
|
||||
if (msg == NULL) { /* is error object not a string? */
|
||||
if (luaL_callmeta(L, 1, "__tostring") && /* does it have a metamethod */
|
||||
lua_type(L, -1) == LUA_TSTRING) /* that produces a string? */
|
||||
return 1; /* that is the message */
|
||||
else
|
||||
msg = lua_pushfstring(L, "(error object is a %s value)",
|
||||
luaL_typename(L, 1));
|
||||
}
|
||||
luaL_traceback(L, L, msg, 1); /* append a standard traceback */
|
||||
return 1; /* return the traceback */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Interface to 'lua_pcall', which sets appropriate message function
|
||||
** and C-signal handler. Used to run all chunks.
|
||||
*/
|
||||
static int docall (lua_State *L, int narg, int nres) {
|
||||
int status;
|
||||
int base = lua_gettop(L) - narg; /* function index */
|
||||
lua_pushcfunction(L, msghandler); /* push message handler */
|
||||
lua_insert(L, base); /* put it under function and args */
|
||||
globalL = L; /* to be available to 'laction' */
|
||||
signal(SIGINT, laction); /* set C-signal handler */
|
||||
status = lua_pcall(L, narg, nres, base);
|
||||
signal(SIGINT, SIG_DFL); /* reset C-signal handler */
|
||||
lua_remove(L, base); /* remove message handler from the stack */
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
static void print_version (void) {
|
||||
lua_writestring(LUA_COPYRIGHT, strlen(LUA_COPYRIGHT));
|
||||
lua_writeline();
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Create the 'arg' table, which stores all arguments from the
|
||||
** command line ('argv'). It should be aligned so that, at index 0,
|
||||
** it has 'argv[script]', which is the script name. The arguments
|
||||
** to the script (everything after 'script') go to positive indices;
|
||||
** other arguments (before the script name) go to negative indices.
|
||||
** If there is no script name, assume interpreter's name as base.
|
||||
*/
|
||||
static void createargtable (lua_State *L, char **argv, int argc, int script) {
|
||||
int i, narg;
|
||||
if (script == argc) script = 0; /* no script name? */
|
||||
narg = argc - (script + 1); /* number of positive indices */
|
||||
lua_createtable(L, narg, script + 1);
|
||||
for (i = 0; i < argc; i++) {
|
||||
lua_pushstring(L, argv[i]);
|
||||
lua_rawseti(L, -2, i - script);
|
||||
}
|
||||
lua_setglobal(L, "arg");
|
||||
}
|
||||
|
||||
|
||||
static int dochunk (lua_State *L, int status) {
|
||||
if (status == LUA_OK) status = docall(L, 0, 0);
|
||||
return report(L, status);
|
||||
}
|
||||
|
||||
|
||||
static int dofile (lua_State *L, const char *name) {
|
||||
return dochunk(L, luaL_loadfile(L, name));
|
||||
}
|
||||
|
||||
|
||||
static int dostring (lua_State *L, const char *s, const char *name) {
|
||||
return dochunk(L, luaL_loadbuffer(L, s, strlen(s), name));
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Calls 'require(name)' and stores the result in a global variable
|
||||
** with the given name.
|
||||
*/
|
||||
static int dolibrary (lua_State *L, const char *name) {
|
||||
int status;
|
||||
lua_getglobal(L, "require");
|
||||
lua_pushstring(L, name);
|
||||
status = docall(L, 1, 1); /* call 'require(name)' */
|
||||
if (status == LUA_OK)
|
||||
lua_setglobal(L, name); /* global[name] = require return */
|
||||
return report(L, status);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Returns the string to be used as a prompt by the interpreter.
|
||||
*/
|
||||
static const char *get_prompt (lua_State *L, int firstline) {
|
||||
const char *p;
|
||||
lua_getglobal(L, firstline ? "_PROMPT" : "_PROMPT2");
|
||||
p = lua_tostring(L, -1);
|
||||
if (p == NULL) p = (firstline ? LUA_PROMPT : LUA_PROMPT2);
|
||||
return p;
|
||||
}
|
||||
|
||||
/* mark in error messages for incomplete statements */
|
||||
#define EOFMARK "<eof>"
|
||||
#define marklen (sizeof(EOFMARK)/sizeof(char) - 1)
|
||||
|
||||
|
||||
/*
|
||||
** Check whether 'status' signals a syntax error and the error
|
||||
** message at the top of the stack ends with the above mark for
|
||||
** incomplete statements.
|
||||
*/
|
||||
static int incomplete (lua_State *L, int status) {
|
||||
if (status == LUA_ERRSYNTAX) {
|
||||
size_t lmsg;
|
||||
const char *msg = lua_tolstring(L, -1, &lmsg);
|
||||
if (lmsg >= marklen && strcmp(msg + lmsg - marklen, EOFMARK) == 0) {
|
||||
lua_pop(L, 1);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
return 0; /* else... */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Prompt the user, read a line, and push it into the Lua stack.
|
||||
*/
|
||||
static int pushline (lua_State *L, int firstline) {
|
||||
char buffer[LUA_MAXINPUT];
|
||||
char *b = buffer;
|
||||
size_t l;
|
||||
const char *prmt = get_prompt(L, firstline);
|
||||
int readstatus = lua_readline(L, b, prmt);
|
||||
if (readstatus == 0)
|
||||
return 0; /* no input (prompt will be popped by caller) */
|
||||
lua_pop(L, 1); /* remove prompt */
|
||||
l = strlen(b);
|
||||
if (l > 0 && b[l-1] == '\n') /* line ends with newline? */
|
||||
b[l-1] = '\0'; /* remove it */
|
||||
if (firstline && b[0] == '=') /* for compatibility with 5.2, ... */
|
||||
lua_pushfstring(L, "return %s", b + 1); /* change '=' to 'return' */
|
||||
else
|
||||
lua_pushstring(L, b);
|
||||
lua_freeline(L, b);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Try to compile line on the stack as 'return <line>'; on return, stack
|
||||
** has either compiled chunk or original line (if compilation failed).
|
||||
*/
|
||||
static int addreturn (lua_State *L) {
|
||||
int status;
|
||||
size_t len; const char *line;
|
||||
lua_pushliteral(L, "return ");
|
||||
lua_pushvalue(L, -2); /* duplicate line */
|
||||
lua_concat(L, 2); /* new line is "return ..." */
|
||||
line = lua_tolstring(L, -1, &len);
|
||||
if ((status = luaL_loadbuffer(L, line, len, "=stdin")) == LUA_OK)
|
||||
lua_remove(L, -3); /* remove original line */
|
||||
else
|
||||
lua_pop(L, 2); /* remove result from 'luaL_loadbuffer' and new line */
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Read multiple lines until a complete Lua statement
|
||||
*/
|
||||
static int multiline (lua_State *L) {
|
||||
for (;;) { /* repeat until gets a complete statement */
|
||||
size_t len;
|
||||
const char *line = lua_tolstring(L, 1, &len); /* get what it has */
|
||||
int status = luaL_loadbuffer(L, line, len, "=stdin"); /* try it */
|
||||
if (!incomplete(L, status) || !pushline(L, 0))
|
||||
return status; /* cannot or should not try to add continuation line */
|
||||
lua_pushliteral(L, "\n"); /* add newline... */
|
||||
lua_insert(L, -2); /* ...between the two lines */
|
||||
lua_concat(L, 3); /* join them */
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Read a line and try to load (compile) it first as an expression (by
|
||||
** adding "return " in front of it) and second as a statement. Return
|
||||
** the final status of load/call with the resulting function (if any)
|
||||
** in the top of the stack.
|
||||
*/
|
||||
static int loadline (lua_State *L) {
|
||||
int status;
|
||||
lua_settop(L, 0);
|
||||
if (!pushline(L, 1))
|
||||
return -1; /* no input */
|
||||
if ((status = addreturn(L)) != LUA_OK) /* 'return ...' did not work? */
|
||||
status = multiline(L); /* try as command, maybe with continuation lines */
|
||||
lua_saveline(L, 1); /* keep history */
|
||||
lua_remove(L, 1); /* remove line from the stack */
|
||||
lua_assert(lua_gettop(L) == 1);
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Prints (calling the Lua 'print' function) any values on the stack
|
||||
*/
|
||||
static void l_print (lua_State *L) {
|
||||
int n = lua_gettop(L);
|
||||
if (n > 0) { /* any result to be printed? */
|
||||
luaL_checkstack(L, LUA_MINSTACK, "too many results to print");
|
||||
lua_getglobal(L, "print");
|
||||
lua_insert(L, 1);
|
||||
if (lua_pcall(L, n, 0, 0) != LUA_OK)
|
||||
l_message(progname, lua_pushfstring(L, "error calling 'print' (%s)",
|
||||
lua_tostring(L, -1)));
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Do the REPL: repeatedly read (load) a line, evaluate (call) it, and
|
||||
** print any results.
|
||||
*/
|
||||
static void doREPL (lua_State *L) {
|
||||
int status;
|
||||
const char *oldprogname = progname;
|
||||
progname = NULL; /* no 'progname' on errors in interactive mode */
|
||||
while ((status = loadline(L)) != -1) {
|
||||
if (status == LUA_OK)
|
||||
status = docall(L, 0, LUA_MULTRET);
|
||||
if (status == LUA_OK) l_print(L);
|
||||
else report(L, status);
|
||||
}
|
||||
lua_settop(L, 0); /* clear stack */
|
||||
lua_writeline();
|
||||
progname = oldprogname;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Push on the stack the contents of table 'arg' from 1 to #arg
|
||||
*/
|
||||
static int pushargs (lua_State *L) {
|
||||
int i, n;
|
||||
if (lua_getglobal(L, "arg") != LUA_TTABLE)
|
||||
luaL_error(L, "'arg' is not a table");
|
||||
n = (int)luaL_len(L, -1);
|
||||
luaL_checkstack(L, n + 3, "too many arguments to script");
|
||||
for (i = 1; i <= n; i++)
|
||||
lua_rawgeti(L, -i, i);
|
||||
lua_remove(L, -i); /* remove table from the stack */
|
||||
return n;
|
||||
}
|
||||
|
||||
|
||||
static int handle_script (lua_State *L, char **argv) {
|
||||
int status;
|
||||
const char *fname = argv[0];
|
||||
if (strcmp(fname, "-") == 0 && strcmp(argv[-1], "--") != 0)
|
||||
fname = NULL; /* stdin */
|
||||
status = luaL_loadfile(L, fname);
|
||||
if (status == LUA_OK) {
|
||||
int n = pushargs(L); /* push arguments to script */
|
||||
status = docall(L, n, LUA_MULTRET);
|
||||
}
|
||||
return report(L, status);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* bits of various argument indicators in 'args' */
|
||||
#define has_error 1 /* bad option */
|
||||
#define has_i 2 /* -i */
|
||||
#define has_v 4 /* -v */
|
||||
#define has_e 8 /* -e */
|
||||
#define has_E 16 /* -E */
|
||||
|
||||
/*
|
||||
** Traverses all arguments from 'argv', returning a mask with those
|
||||
** needed before running any Lua code (or an error code if it finds
|
||||
** any invalid argument). 'first' returns the first not-handled argument
|
||||
** (either the script name or a bad argument in case of error).
|
||||
*/
|
||||
static int collectargs (char **argv, int *first) {
|
||||
int args = 0;
|
||||
int i;
|
||||
for (i = 1; argv[i] != NULL; i++) {
|
||||
*first = i;
|
||||
if (argv[i][0] != '-') /* not an option? */
|
||||
return args; /* stop handling options */
|
||||
switch (argv[i][1]) { /* else check option */
|
||||
case '-': /* '--' */
|
||||
if (argv[i][2] != '\0') /* extra characters after '--'? */
|
||||
return has_error; /* invalid option */
|
||||
*first = i + 1;
|
||||
return args;
|
||||
case '\0': /* '-' */
|
||||
return args; /* script "name" is '-' */
|
||||
case 'E':
|
||||
if (argv[i][2] != '\0') /* extra characters after 1st? */
|
||||
return has_error; /* invalid option */
|
||||
args |= has_E;
|
||||
break;
|
||||
case 'i':
|
||||
args |= has_i; /* goes through (-i implies -v) */
|
||||
case 'v':
|
||||
if (argv[i][2] != '\0') /* extra characters after 1st? */
|
||||
return has_error; /* invalid option */
|
||||
args |= has_v;
|
||||
break;
|
||||
case 'e':
|
||||
args |= has_e; /* go through */
|
||||
case 'l': /* both options need an argument */
|
||||
if (argv[i][2] == '\0') { /* no concatenated argument? */
|
||||
i++; /* try next 'argv' */
|
||||
if (argv[i] == NULL || argv[i][0] == '-')
|
||||
return has_error; /* no next argument or it is another option */
|
||||
}
|
||||
break;
|
||||
default: /* invalid option */
|
||||
return has_error;
|
||||
}
|
||||
}
|
||||
*first = i; /* no script name */
|
||||
return args;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Processes options 'e' and 'l', which involve running Lua code.
|
||||
** Returns 0 if some code raises an error.
|
||||
*/
|
||||
static int runargs (lua_State *L, char **argv, int n) {
|
||||
int i;
|
||||
for (i = 1; i < n; i++) {
|
||||
int status;
|
||||
int option = argv[i][1];
|
||||
lua_assert(argv[i][0] == '-'); /* already checked */
|
||||
if (option == 'e' || option == 'l') {
|
||||
const char *extra = argv[i] + 2; /* both options need an argument */
|
||||
if (*extra == '\0') extra = argv[++i];
|
||||
lua_assert(extra != NULL);
|
||||
if (option == 'e')
|
||||
status = dostring(L, extra, "=(command line)");
|
||||
else
|
||||
status = dolibrary(L, extra);
|
||||
if (status != LUA_OK) return 0;
|
||||
}
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int handle_luainit (lua_State *L) {
|
||||
const char *name = "=" LUA_INITVARVERSION;
|
||||
const char *init = getenv(name + 1);
|
||||
if (init == NULL) {
|
||||
name = "=" LUA_INIT_VAR;
|
||||
init = getenv(name + 1); /* try alternative name */
|
||||
}
|
||||
if (init == NULL) return LUA_OK;
|
||||
else if (init[0] == '@')
|
||||
return dofile(L, init+1);
|
||||
else
|
||||
return dostring(L, init, name);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Main body of stand-alone interpreter (to be called in protected mode).
|
||||
** Reads the options and handles them all.
|
||||
*/
|
||||
static int pmain (lua_State *L) {
|
||||
int argc = (int)lua_tointeger(L, 1);
|
||||
char **argv = (char **)lua_touserdata(L, 2);
|
||||
int script;
|
||||
int args = collectargs(argv, &script);
|
||||
luaL_checkversion(L); /* check that interpreter has correct version */
|
||||
if (argv[0] && argv[0][0]) progname = argv[0];
|
||||
if (args == has_error) { /* bad arg? */
|
||||
print_usage(argv[script]); /* 'script' has index of bad arg. */
|
||||
return 0;
|
||||
}
|
||||
if (args & has_v) /* option '-v'? */
|
||||
print_version();
|
||||
if (args & has_E) { /* option '-E'? */
|
||||
lua_pushboolean(L, 1); /* signal for libraries to ignore env. vars. */
|
||||
lua_setfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
|
||||
}
|
||||
luaL_openlibs(L); /* open standard libraries */
|
||||
createargtable(L, argv, argc, script); /* create table 'arg' */
|
||||
if (!(args & has_E)) { /* no option '-E'? */
|
||||
if (handle_luainit(L) != LUA_OK) /* run LUA_INIT */
|
||||
return 0; /* error running LUA_INIT */
|
||||
}
|
||||
if (!runargs(L, argv, script)) /* execute arguments -e and -l */
|
||||
return 0; /* something failed */
|
||||
if (script < argc && /* execute main script (if there is one) */
|
||||
handle_script(L, argv + script) != LUA_OK)
|
||||
return 0;
|
||||
if (args & has_i) /* -i option? */
|
||||
doREPL(L); /* do read-eval-print loop */
|
||||
else if (script == argc && !(args & (has_e | has_v))) { /* no arguments? */
|
||||
if (lua_stdin_is_tty()) { /* running in interactive mode? */
|
||||
print_version();
|
||||
doREPL(L); /* do read-eval-print loop */
|
||||
}
|
||||
else dofile(L, NULL); /* executes stdin as a file */
|
||||
}
|
||||
lua_pushboolean(L, 1); /* signal no errors */
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
int main (int argc, char **argv) {
|
||||
int status, result;
|
||||
lua_State *L = luaL_newstate(); /* create state */
|
||||
if (L == NULL) {
|
||||
l_message(argv[0], "cannot create state: not enough memory");
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
lua_pushcfunction(L, &pmain); /* to call 'pmain' in protected mode */
|
||||
lua_pushinteger(L, argc); /* 1st argument */
|
||||
lua_pushlightuserdata(L, argv); /* 2nd argument */
|
||||
status = lua_pcall(L, 2, 1, 0); /* do the call */
|
||||
result = lua_toboolean(L, -1); /* get result */
|
||||
report(L, status);
|
||||
lua_close(L);
|
||||
return (result && status == LUA_OK) ? EXIT_SUCCESS : EXIT_FAILURE;
|
||||
}
|
||||
|
||||
@ -0,0 +1,444 @@
|
||||
/*
|
||||
** $Id: luac.c,v 1.71 2014/11/26 12:08:59 lhf Exp $
|
||||
** Lua compiler (saves bytecodes to files; also lists bytecodes)
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define luac_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
#include <ctype.h>
|
||||
#include <errno.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
#include "lauxlib.h"
|
||||
|
||||
#include "lobject.h"
|
||||
#include "lstate.h"
|
||||
#include "lundump.h"
|
||||
|
||||
static void PrintFunction(const Proto* f, int full);
|
||||
#define luaU_print PrintFunction
|
||||
|
||||
#define PROGNAME "luac" /* default program name */
|
||||
#define OUTPUT PROGNAME ".out" /* default output file */
|
||||
|
||||
static int listing=0; /* list bytecodes? */
|
||||
static int dumping=1; /* dump bytecodes? */
|
||||
static int stripping=0; /* strip debug information? */
|
||||
static char Output[]={ OUTPUT }; /* default output file name */
|
||||
static const char* output=Output; /* actual output file name */
|
||||
static const char* progname=PROGNAME; /* actual program name */
|
||||
|
||||
static void fatal(const char* message)
|
||||
{
|
||||
fprintf(stderr,"%s: %s\n",progname,message);
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
static void cannot(const char* what)
|
||||
{
|
||||
fprintf(stderr,"%s: cannot %s %s: %s\n",progname,what,output,strerror(errno));
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
static void usage(const char* message)
|
||||
{
|
||||
if (*message=='-')
|
||||
fprintf(stderr,"%s: unrecognized option " LUA_QS "\n",progname,message);
|
||||
else
|
||||
fprintf(stderr,"%s: %s\n",progname,message);
|
||||
fprintf(stderr,
|
||||
"usage: %s [options] [filenames]\n"
|
||||
"Available options are:\n"
|
||||
" -l list (use -l -l for full listing)\n"
|
||||
" -o name output to file " LUA_QL("name") " (default is \"%s\")\n"
|
||||
" -p parse only\n"
|
||||
" -s strip debug information\n"
|
||||
" -v show version information\n"
|
||||
" -- stop handling options\n"
|
||||
" - stop handling options and process stdin\n"
|
||||
,progname,Output);
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
#define IS(s) (strcmp(argv[i],s)==0)
|
||||
|
||||
static int doargs(int argc, char* argv[])
|
||||
{
|
||||
int i;
|
||||
int version=0;
|
||||
if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0];
|
||||
for (i=1; i<argc; i++)
|
||||
{
|
||||
if (*argv[i]!='-') /* end of options; keep it */
|
||||
break;
|
||||
else if (IS("--")) /* end of options; skip it */
|
||||
{
|
||||
++i;
|
||||
if (version) ++version;
|
||||
break;
|
||||
}
|
||||
else if (IS("-")) /* end of options; use stdin */
|
||||
break;
|
||||
else if (IS("-l")) /* list */
|
||||
++listing;
|
||||
else if (IS("-o")) /* output file */
|
||||
{
|
||||
output=argv[++i];
|
||||
if (output==NULL || *output==0 || (*output=='-' && output[1]!=0))
|
||||
usage(LUA_QL("-o") " needs argument");
|
||||
if (IS("-")) output=NULL;
|
||||
}
|
||||
else if (IS("-p")) /* parse only */
|
||||
dumping=0;
|
||||
else if (IS("-s")) /* strip debug information */
|
||||
stripping=1;
|
||||
else if (IS("-v")) /* show version */
|
||||
++version;
|
||||
else /* unknown option */
|
||||
usage(argv[i]);
|
||||
}
|
||||
if (i==argc && (listing || !dumping))
|
||||
{
|
||||
dumping=0;
|
||||
argv[--i]=Output;
|
||||
}
|
||||
if (version)
|
||||
{
|
||||
printf("%s\n",LUA_COPYRIGHT);
|
||||
if (version==argc-1) exit(EXIT_SUCCESS);
|
||||
}
|
||||
return i;
|
||||
}
|
||||
|
||||
#define FUNCTION "(function()end)();"
|
||||
|
||||
static const char* reader(lua_State *L, void *ud, size_t *size)
|
||||
{
|
||||
UNUSED(L);
|
||||
if ((*(int*)ud)--)
|
||||
{
|
||||
*size=sizeof(FUNCTION)-1;
|
||||
return FUNCTION;
|
||||
}
|
||||
else
|
||||
{
|
||||
*size=0;
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
#define toproto(L,i) getproto(L->top+(i))
|
||||
|
||||
static const Proto* combine(lua_State* L, int n)
|
||||
{
|
||||
if (n==1)
|
||||
return toproto(L,-1);
|
||||
else
|
||||
{
|
||||
Proto* f;
|
||||
int i=n;
|
||||
if (lua_load(L,reader,&i,"=(" PROGNAME ")",NULL)!=LUA_OK) fatal(lua_tostring(L,-1));
|
||||
f=toproto(L,-1);
|
||||
for (i=0; i<n; i++)
|
||||
{
|
||||
f->p[i]=toproto(L,i-n-1);
|
||||
if (f->p[i]->sizeupvalues>0) f->p[i]->upvalues[0].instack=0;
|
||||
}
|
||||
f->sizelineinfo=0;
|
||||
return f;
|
||||
}
|
||||
}
|
||||
|
||||
static int writer(lua_State* L, const void* p, size_t size, void* u)
|
||||
{
|
||||
UNUSED(L);
|
||||
return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0);
|
||||
}
|
||||
|
||||
static int pmain(lua_State* L)
|
||||
{
|
||||
int argc=(int)lua_tointeger(L,1);
|
||||
char** argv=(char**)lua_touserdata(L,2);
|
||||
const Proto* f;
|
||||
int i;
|
||||
if (!lua_checkstack(L,argc)) fatal("too many input files");
|
||||
for (i=0; i<argc; i++)
|
||||
{
|
||||
const char* filename=IS("-") ? NULL : argv[i];
|
||||
if (luaL_loadfile(L,filename)!=LUA_OK) fatal(lua_tostring(L,-1));
|
||||
}
|
||||
f=combine(L,argc);
|
||||
if (listing) luaU_print(f,listing>1);
|
||||
if (dumping)
|
||||
{
|
||||
FILE* D= (output==NULL) ? stdout : fopen(output,"wb");
|
||||
if (D==NULL) cannot("open");
|
||||
lua_lock(L);
|
||||
luaU_dump(L,f,writer,D,stripping);
|
||||
lua_unlock(L);
|
||||
if (ferror(D)) cannot("write");
|
||||
if (fclose(D)) cannot("close");
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
int main(int argc, char* argv[])
|
||||
{
|
||||
lua_State* L;
|
||||
int i=doargs(argc,argv);
|
||||
argc-=i; argv+=i;
|
||||
if (argc<=0) usage("no input files given");
|
||||
L=luaL_newstate();
|
||||
if (L==NULL) fatal("cannot create state: not enough memory");
|
||||
lua_pushcfunction(L,&pmain);
|
||||
lua_pushinteger(L,argc);
|
||||
lua_pushlightuserdata(L,argv);
|
||||
if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1));
|
||||
lua_close(L);
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
|
||||
/*
|
||||
** $Id: print.c,v 1.74 2014/07/21 01:41:45 lhf Exp $
|
||||
** print bytecodes
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#include <ctype.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#define luac_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "ldebug.h"
|
||||
#include "lobject.h"
|
||||
#include "lopcodes.h"
|
||||
|
||||
#define VOID(p) ((const void*)(p))
|
||||
|
||||
static void PrintString(const TString* ts)
|
||||
{
|
||||
const char* s=getstr(ts);
|
||||
size_t i,n=ts->len;
|
||||
printf("%c",'"');
|
||||
for (i=0; i<n; i++)
|
||||
{
|
||||
int c=(int)(unsigned char)s[i];
|
||||
switch (c)
|
||||
{
|
||||
case '"': printf("\\\""); break;
|
||||
case '\\': printf("\\\\"); break;
|
||||
case '\a': printf("\\a"); break;
|
||||
case '\b': printf("\\b"); break;
|
||||
case '\f': printf("\\f"); break;
|
||||
case '\n': printf("\\n"); break;
|
||||
case '\r': printf("\\r"); break;
|
||||
case '\t': printf("\\t"); break;
|
||||
case '\v': printf("\\v"); break;
|
||||
default: if (isprint(c))
|
||||
printf("%c",c);
|
||||
else
|
||||
printf("\\%03d",c);
|
||||
}
|
||||
}
|
||||
printf("%c",'"');
|
||||
}
|
||||
|
||||
static void PrintConstant(const Proto* f, int i)
|
||||
{
|
||||
const TValue* o=&f->k[i];
|
||||
switch (ttype(o))
|
||||
{
|
||||
case LUA_TNIL:
|
||||
printf("nil");
|
||||
break;
|
||||
case LUA_TBOOLEAN:
|
||||
printf(bvalue(o) ? "true" : "false");
|
||||
break;
|
||||
case LUA_TNUMFLT:
|
||||
printf(LUA_NUMBER_FMT,fltvalue(o));
|
||||
break;
|
||||
case LUA_TNUMINT:
|
||||
printf(LUA_INTEGER_FMT,ivalue(o));
|
||||
break;
|
||||
case LUA_TSHRSTR: case LUA_TLNGSTR:
|
||||
PrintString(tsvalue(o));
|
||||
break;
|
||||
default: /* cannot happen */
|
||||
printf("? type=%d",ttype(o));
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
#define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-")
|
||||
#define MYK(x) (-1-(x))
|
||||
|
||||
static void PrintCode(const Proto* f)
|
||||
{
|
||||
const Instruction* code=f->code;
|
||||
int pc,n=f->sizecode;
|
||||
for (pc=0; pc<n; pc++)
|
||||
{
|
||||
Instruction i=code[pc];
|
||||
OpCode o=GET_OPCODE(i);
|
||||
int a=GETARG_A(i);
|
||||
int b=GETARG_B(i);
|
||||
int c=GETARG_C(i);
|
||||
int ax=GETARG_Ax(i);
|
||||
int bx=GETARG_Bx(i);
|
||||
int sbx=GETARG_sBx(i);
|
||||
int line=getfuncline(f,pc);
|
||||
printf("\t%d\t",pc+1);
|
||||
if (line>0) printf("[%d]\t",line); else printf("[-]\t");
|
||||
printf("%-9s\t",luaP_opnames[o]);
|
||||
switch (getOpMode(o))
|
||||
{
|
||||
case iABC:
|
||||
printf("%d",a);
|
||||
if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (MYK(INDEXK(b))) : b);
|
||||
if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (MYK(INDEXK(c))) : c);
|
||||
break;
|
||||
case iABx:
|
||||
printf("%d",a);
|
||||
if (getBMode(o)==OpArgK) printf(" %d",MYK(bx));
|
||||
if (getBMode(o)==OpArgU) printf(" %d",bx);
|
||||
break;
|
||||
case iAsBx:
|
||||
printf("%d %d",a,sbx);
|
||||
break;
|
||||
case iAx:
|
||||
printf("%d",MYK(ax));
|
||||
break;
|
||||
}
|
||||
switch (o)
|
||||
{
|
||||
case OP_LOADK:
|
||||
printf("\t; "); PrintConstant(f,bx);
|
||||
break;
|
||||
case OP_GETUPVAL:
|
||||
case OP_SETUPVAL:
|
||||
printf("\t; %s",UPVALNAME(b));
|
||||
break;
|
||||
case OP_GETTABUP:
|
||||
printf("\t; %s",UPVALNAME(b));
|
||||
if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
|
||||
break;
|
||||
case OP_SETTABUP:
|
||||
printf("\t; %s",UPVALNAME(a));
|
||||
if (ISK(b)) { printf(" "); PrintConstant(f,INDEXK(b)); }
|
||||
if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
|
||||
break;
|
||||
case OP_GETTABLE:
|
||||
case OP_SELF:
|
||||
if (ISK(c)) { printf("\t; "); PrintConstant(f,INDEXK(c)); }
|
||||
break;
|
||||
case OP_SETTABLE:
|
||||
case OP_ADD:
|
||||
case OP_SUB:
|
||||
case OP_MUL:
|
||||
case OP_POW:
|
||||
case OP_DIV:
|
||||
case OP_IDIV:
|
||||
case OP_BAND:
|
||||
case OP_BOR:
|
||||
case OP_BXOR:
|
||||
case OP_SHL:
|
||||
case OP_SHR:
|
||||
case OP_EQ:
|
||||
case OP_LT:
|
||||
case OP_LE:
|
||||
if (ISK(b) || ISK(c))
|
||||
{
|
||||
printf("\t; ");
|
||||
if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-");
|
||||
printf(" ");
|
||||
if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-");
|
||||
}
|
||||
break;
|
||||
case OP_JMP:
|
||||
case OP_FORLOOP:
|
||||
case OP_FORPREP:
|
||||
case OP_TFORLOOP:
|
||||
printf("\t; to %d",sbx+pc+2);
|
||||
break;
|
||||
case OP_CLOSURE:
|
||||
printf("\t; %p",VOID(f->p[bx]));
|
||||
break;
|
||||
case OP_SETLIST:
|
||||
if (c==0) printf("\t; %d",(int)code[++pc]); else printf("\t; %d",c);
|
||||
break;
|
||||
case OP_EXTRAARG:
|
||||
printf("\t; "); PrintConstant(f,ax);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
}
|
||||
|
||||
#define SS(x) ((x==1)?"":"s")
|
||||
#define S(x) (int)(x),SS(x)
|
||||
|
||||
static void PrintHeader(const Proto* f)
|
||||
{
|
||||
const char* s=f->source ? getstr(f->source) : "=?";
|
||||
if (*s=='@' || *s=='=')
|
||||
s++;
|
||||
else if (*s==LUA_SIGNATURE[0])
|
||||
s="(bstring)";
|
||||
else
|
||||
s="(string)";
|
||||
printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n",
|
||||
(f->linedefined==0)?"main":"function",s,
|
||||
f->linedefined,f->lastlinedefined,
|
||||
S(f->sizecode),VOID(f));
|
||||
printf("%d%s param%s, %d slot%s, %d upvalue%s, ",
|
||||
(int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams),
|
||||
S(f->maxstacksize),S(f->sizeupvalues));
|
||||
printf("%d local%s, %d constant%s, %d function%s\n",
|
||||
S(f->sizelocvars),S(f->sizek),S(f->sizep));
|
||||
}
|
||||
|
||||
static void PrintDebug(const Proto* f)
|
||||
{
|
||||
int i,n;
|
||||
n=f->sizek;
|
||||
printf("constants (%d) for %p:\n",n,VOID(f));
|
||||
for (i=0; i<n; i++)
|
||||
{
|
||||
printf("\t%d\t",i+1);
|
||||
PrintConstant(f,i);
|
||||
printf("\n");
|
||||
}
|
||||
n=f->sizelocvars;
|
||||
printf("locals (%d) for %p:\n",n,VOID(f));
|
||||
for (i=0; i<n; i++)
|
||||
{
|
||||
printf("\t%d\t%s\t%d\t%d\n",
|
||||
i,getstr(f->locvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1);
|
||||
}
|
||||
n=f->sizeupvalues;
|
||||
printf("upvalues (%d) for %p:\n",n,VOID(f));
|
||||
for (i=0; i<n; i++)
|
||||
{
|
||||
printf("\t%d\t%s\t%d\t%d\n",
|
||||
i,UPVALNAME(i),f->upvalues[i].instack,f->upvalues[i].idx);
|
||||
}
|
||||
}
|
||||
|
||||
static void PrintFunction(const Proto* f, int full)
|
||||
{
|
||||
int i,n=f->sizep;
|
||||
PrintHeader(f);
|
||||
PrintCode(f);
|
||||
if (full) PrintDebug(f);
|
||||
for (i=0; i<n; i++) PrintFunction(f->p[i],full);
|
||||
}
|
||||
@ -0,0 +1,277 @@
|
||||
/*
|
||||
** $Id: lundump.c,v 2.41 2014/11/02 19:19:04 roberto Exp $
|
||||
** load precompiled Lua chunks
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lundump_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "ldebug.h"
|
||||
#include "ldo.h"
|
||||
#include "lfunc.h"
|
||||
#include "lmem.h"
|
||||
#include "lobject.h"
|
||||
#include "lstring.h"
|
||||
#include "lundump.h"
|
||||
#include "lzio.h"
|
||||
|
||||
|
||||
#if !defined(luai_verifycode)
|
||||
#define luai_verifycode(L,b,f) /* empty */
|
||||
#endif
|
||||
|
||||
|
||||
typedef struct {
|
||||
lua_State *L;
|
||||
ZIO *Z;
|
||||
Mbuffer *b;
|
||||
const char *name;
|
||||
} LoadState;
|
||||
|
||||
|
||||
static l_noret error(LoadState *S, const char *why) {
|
||||
luaO_pushfstring(S->L, "%s: %s precompiled chunk", S->name, why);
|
||||
luaD_throw(S->L, LUA_ERRSYNTAX);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** All high-level loads go through LoadVector; you can change it to
|
||||
** adapt to the endianness of the input
|
||||
*/
|
||||
#define LoadVector(S,b,n) LoadBlock(S,b,(n)*sizeof((b)[0]))
|
||||
|
||||
static void LoadBlock (LoadState *S, void *b, size_t size) {
|
||||
if (luaZ_read(S->Z, b, size) != 0)
|
||||
error(S, "truncated");
|
||||
}
|
||||
|
||||
|
||||
#define LoadVar(S,x) LoadVector(S,&x,1)
|
||||
|
||||
|
||||
static lu_byte LoadByte (LoadState *S) {
|
||||
lu_byte x;
|
||||
LoadVar(S, x);
|
||||
return x;
|
||||
}
|
||||
|
||||
|
||||
static int LoadInt (LoadState *S) {
|
||||
int x;
|
||||
LoadVar(S, x);
|
||||
return x;
|
||||
}
|
||||
|
||||
|
||||
static lua_Number LoadNumber (LoadState *S) {
|
||||
lua_Number x;
|
||||
LoadVar(S, x);
|
||||
return x;
|
||||
}
|
||||
|
||||
|
||||
static lua_Integer LoadInteger (LoadState *S) {
|
||||
lua_Integer x;
|
||||
LoadVar(S, x);
|
||||
return x;
|
||||
}
|
||||
|
||||
|
||||
static TString *LoadString (LoadState *S) {
|
||||
size_t size = LoadByte(S);
|
||||
if (size == 0xFF)
|
||||
LoadVar(S, size);
|
||||
if (size == 0)
|
||||
return NULL;
|
||||
else {
|
||||
char *s = luaZ_openspace(S->L, S->b, --size);
|
||||
LoadVector(S, s, size);
|
||||
return luaS_newlstr(S->L, s, size);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void LoadCode (LoadState *S, Proto *f) {
|
||||
int n = LoadInt(S);
|
||||
f->code = luaM_newvector(S->L, n, Instruction);
|
||||
f->sizecode = n;
|
||||
LoadVector(S, f->code, n);
|
||||
}
|
||||
|
||||
|
||||
static void LoadFunction(LoadState *S, Proto *f, TString *psource);
|
||||
|
||||
|
||||
static void LoadConstants (LoadState *S, Proto *f) {
|
||||
int i;
|
||||
int n = LoadInt(S);
|
||||
f->k = luaM_newvector(S->L, n, TValue);
|
||||
f->sizek = n;
|
||||
for (i = 0; i < n; i++)
|
||||
setnilvalue(&f->k[i]);
|
||||
for (i = 0; i < n; i++) {
|
||||
TValue *o = &f->k[i];
|
||||
int t = LoadByte(S);
|
||||
switch (t) {
|
||||
case LUA_TNIL:
|
||||
setnilvalue(o);
|
||||
break;
|
||||
case LUA_TBOOLEAN:
|
||||
setbvalue(o, LoadByte(S));
|
||||
break;
|
||||
case LUA_TNUMFLT:
|
||||
setfltvalue(o, LoadNumber(S));
|
||||
break;
|
||||
case LUA_TNUMINT:
|
||||
setivalue(o, LoadInteger(S));
|
||||
break;
|
||||
case LUA_TSHRSTR:
|
||||
case LUA_TLNGSTR:
|
||||
setsvalue2n(S->L, o, LoadString(S));
|
||||
break;
|
||||
default:
|
||||
lua_assert(0);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void LoadProtos (LoadState *S, Proto *f) {
|
||||
int i;
|
||||
int n = LoadInt(S);
|
||||
f->p = luaM_newvector(S->L, n, Proto *);
|
||||
f->sizep = n;
|
||||
for (i = 0; i < n; i++)
|
||||
f->p[i] = NULL;
|
||||
for (i = 0; i < n; i++) {
|
||||
f->p[i] = luaF_newproto(S->L);
|
||||
LoadFunction(S, f->p[i], f->source);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void LoadUpvalues (LoadState *S, Proto *f) {
|
||||
int i, n;
|
||||
n = LoadInt(S);
|
||||
f->upvalues = luaM_newvector(S->L, n, Upvaldesc);
|
||||
f->sizeupvalues = n;
|
||||
for (i = 0; i < n; i++)
|
||||
f->upvalues[i].name = NULL;
|
||||
for (i = 0; i < n; i++) {
|
||||
f->upvalues[i].instack = LoadByte(S);
|
||||
f->upvalues[i].idx = LoadByte(S);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void LoadDebug (LoadState *S, Proto *f) {
|
||||
int i, n;
|
||||
n = LoadInt(S);
|
||||
f->lineinfo = luaM_newvector(S->L, n, int);
|
||||
f->sizelineinfo = n;
|
||||
LoadVector(S, f->lineinfo, n);
|
||||
n = LoadInt(S);
|
||||
f->locvars = luaM_newvector(S->L, n, LocVar);
|
||||
f->sizelocvars = n;
|
||||
for (i = 0; i < n; i++)
|
||||
f->locvars[i].varname = NULL;
|
||||
for (i = 0; i < n; i++) {
|
||||
f->locvars[i].varname = LoadString(S);
|
||||
f->locvars[i].startpc = LoadInt(S);
|
||||
f->locvars[i].endpc = LoadInt(S);
|
||||
}
|
||||
n = LoadInt(S);
|
||||
for (i = 0; i < n; i++)
|
||||
f->upvalues[i].name = LoadString(S);
|
||||
}
|
||||
|
||||
|
||||
static void LoadFunction (LoadState *S, Proto *f, TString *psource) {
|
||||
f->source = LoadString(S);
|
||||
if (f->source == NULL) /* no source in dump? */
|
||||
f->source = psource; /* reuse parent's source */
|
||||
f->linedefined = LoadInt(S);
|
||||
f->lastlinedefined = LoadInt(S);
|
||||
f->numparams = LoadByte(S);
|
||||
f->is_vararg = LoadByte(S);
|
||||
f->maxstacksize = LoadByte(S);
|
||||
LoadCode(S, f);
|
||||
LoadConstants(S, f);
|
||||
LoadUpvalues(S, f);
|
||||
LoadProtos(S, f);
|
||||
LoadDebug(S, f);
|
||||
}
|
||||
|
||||
|
||||
static void checkliteral (LoadState *S, const char *s, const char *msg) {
|
||||
char buff[sizeof(LUA_SIGNATURE) + sizeof(LUAC_DATA)]; /* larger than both */
|
||||
size_t len = strlen(s);
|
||||
LoadVector(S, buff, len);
|
||||
if (memcmp(s, buff, len) != 0)
|
||||
error(S, msg);
|
||||
}
|
||||
|
||||
|
||||
static void fchecksize (LoadState *S, size_t size, const char *tname) {
|
||||
if (LoadByte(S) != size)
|
||||
error(S, luaO_pushfstring(S->L, "%s size mismatch in", tname));
|
||||
}
|
||||
|
||||
|
||||
#define checksize(S,t) fchecksize(S,sizeof(t),#t)
|
||||
|
||||
static void checkHeader (LoadState *S) {
|
||||
checkliteral(S, LUA_SIGNATURE + 1, "not a"); /* 1st char already checked */
|
||||
if (LoadByte(S) != LUAC_VERSION)
|
||||
error(S, "version mismatch in");
|
||||
if (LoadByte(S) != LUAC_FORMAT)
|
||||
error(S, "format mismatch in");
|
||||
checkliteral(S, LUAC_DATA, "corrupted");
|
||||
checksize(S, int);
|
||||
checksize(S, size_t);
|
||||
checksize(S, Instruction);
|
||||
checksize(S, lua_Integer);
|
||||
checksize(S, lua_Number);
|
||||
if (LoadInteger(S) != LUAC_INT)
|
||||
error(S, "endianness mismatch in");
|
||||
if (LoadNumber(S) != LUAC_NUM)
|
||||
error(S, "float format mismatch in");
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** load precompiled chunk
|
||||
*/
|
||||
LClosure *luaU_undump(lua_State *L, ZIO *Z, Mbuffer *buff,
|
||||
const char *name) {
|
||||
LoadState S;
|
||||
LClosure *cl;
|
||||
if (*name == '@' || *name == '=')
|
||||
S.name = name + 1;
|
||||
else if (*name == LUA_SIGNATURE[0])
|
||||
S.name = "binary string";
|
||||
else
|
||||
S.name = name;
|
||||
S.L = L;
|
||||
S.Z = Z;
|
||||
S.b = buff;
|
||||
checkHeader(&S);
|
||||
cl = luaF_newLclosure(L, LoadByte(&S));
|
||||
setclLvalue(L, L->top, cl);
|
||||
incr_top(L);
|
||||
cl->p = luaF_newproto(L);
|
||||
LoadFunction(&S, cl->p, NULL);
|
||||
lua_assert(cl->nupvalues == cl->p->sizeupvalues);
|
||||
luai_verifycode(L, buff, cl->p);
|
||||
return cl;
|
||||
}
|
||||
|
||||
@ -0,0 +1,255 @@
|
||||
/*
|
||||
** $Id: lutf8lib.c,v 1.13 2014/11/02 19:19:04 roberto Exp $
|
||||
** Standard library for UTF-8 manipulation
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lutf8lib_c
|
||||
#define LUA_LIB
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <assert.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "lauxlib.h"
|
||||
#include "lualib.h"
|
||||
|
||||
#define MAXUNICODE 0x10FFFF
|
||||
|
||||
#define iscont(p) ((*(p) & 0xC0) == 0x80)
|
||||
|
||||
|
||||
/* from strlib */
|
||||
/* translate a relative string position: negative means back from end */
|
||||
static lua_Integer u_posrelat (lua_Integer pos, size_t len) {
|
||||
if (pos >= 0) return pos;
|
||||
else if (0u - (size_t)pos > len) return 0;
|
||||
else return (lua_Integer)len + pos + 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Decode one UTF-8 sequence, returning NULL if byte sequence is invalid.
|
||||
*/
|
||||
static const char *utf8_decode (const char *o, int *val) {
|
||||
static unsigned int limits[] = {0xFF, 0x7F, 0x7FF, 0xFFFF};
|
||||
const unsigned char *s = (const unsigned char *)o;
|
||||
unsigned int c = s[0];
|
||||
unsigned int res = 0; /* final result */
|
||||
if (c < 0x80) /* ascii? */
|
||||
res = c;
|
||||
else {
|
||||
int count = 0; /* to count number of continuation bytes */
|
||||
while (c & 0x40) { /* still have continuation bytes? */
|
||||
int cc = s[++count]; /* read next byte */
|
||||
if ((cc & 0xC0) != 0x80) /* not a continuation byte? */
|
||||
return NULL; /* invalid byte sequence */
|
||||
res = (res << 6) | (cc & 0x3F); /* add lower 6 bits from cont. byte */
|
||||
c <<= 1; /* to test next bit */
|
||||
}
|
||||
res |= ((c & 0x7F) << (count * 5)); /* add first byte */
|
||||
if (count > 3 || res > MAXUNICODE || res <= limits[count])
|
||||
return NULL; /* invalid byte sequence */
|
||||
s += count; /* skip continuation bytes read */
|
||||
}
|
||||
if (val) *val = res;
|
||||
return (const char *)s + 1; /* +1 to include first byte */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** utf8len(s [, i [, j]]) --> number of characters that start in the
|
||||
** range [i,j], or nil + current position if 's' is not well formed in
|
||||
** that interval
|
||||
*/
|
||||
static int utflen (lua_State *L) {
|
||||
int n = 0;
|
||||
size_t len;
|
||||
const char *s = luaL_checklstring(L, 1, &len);
|
||||
lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len);
|
||||
lua_Integer posj = u_posrelat(luaL_optinteger(L, 3, -1), len);
|
||||
luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 2,
|
||||
"initial position out of string");
|
||||
luaL_argcheck(L, --posj < (lua_Integer)len, 3,
|
||||
"final position out of string");
|
||||
while (posi <= posj) {
|
||||
const char *s1 = utf8_decode(s + posi, NULL);
|
||||
if (s1 == NULL) { /* conversion error? */
|
||||
lua_pushnil(L); /* return nil ... */
|
||||
lua_pushinteger(L, posi + 1); /* ... and current position */
|
||||
return 2;
|
||||
}
|
||||
posi = s1 - s;
|
||||
n++;
|
||||
}
|
||||
lua_pushinteger(L, n);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** codepoint(s, [i, [j]]) -> returns codepoints for all characters
|
||||
** that start in the range [i,j]
|
||||
*/
|
||||
static int codepoint (lua_State *L) {
|
||||
size_t len;
|
||||
const char *s = luaL_checklstring(L, 1, &len);
|
||||
lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len);
|
||||
lua_Integer pose = u_posrelat(luaL_optinteger(L, 3, posi), len);
|
||||
int n;
|
||||
const char *se;
|
||||
luaL_argcheck(L, posi >= 1, 2, "out of range");
|
||||
luaL_argcheck(L, pose <= (lua_Integer)len, 3, "out of range");
|
||||
if (posi > pose) return 0; /* empty interval; return no values */
|
||||
n = (int)(pose - posi + 1);
|
||||
if (posi + n <= pose) /* (lua_Integer -> int) overflow? */
|
||||
return luaL_error(L, "string slice too long");
|
||||
luaL_checkstack(L, n, "string slice too long");
|
||||
n = 0;
|
||||
se = s + pose;
|
||||
for (s += posi - 1; s < se;) {
|
||||
int code;
|
||||
s = utf8_decode(s, &code);
|
||||
if (s == NULL)
|
||||
return luaL_error(L, "invalid UTF-8 code");
|
||||
lua_pushinteger(L, code);
|
||||
n++;
|
||||
}
|
||||
return n;
|
||||
}
|
||||
|
||||
|
||||
static void pushutfchar (lua_State *L, int arg) {
|
||||
lua_Integer code = luaL_checkinteger(L, arg);
|
||||
luaL_argcheck(L, 0 <= code && code <= MAXUNICODE, arg, "value out of range");
|
||||
lua_pushfstring(L, "%U", (long)code);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** utfchar(n1, n2, ...) -> char(n1)..char(n2)...
|
||||
*/
|
||||
static int utfchar (lua_State *L) {
|
||||
int n = lua_gettop(L); /* number of arguments */
|
||||
if (n == 1) /* optimize common case of single char */
|
||||
pushutfchar(L, 1);
|
||||
else {
|
||||
int i;
|
||||
luaL_Buffer b;
|
||||
luaL_buffinit(L, &b);
|
||||
for (i = 1; i <= n; i++) {
|
||||
pushutfchar(L, i);
|
||||
luaL_addvalue(&b);
|
||||
}
|
||||
luaL_pushresult(&b);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** offset(s, n, [i]) -> index where n-th character counting from
|
||||
** position 'i' starts; 0 means character at 'i'.
|
||||
*/
|
||||
static int byteoffset (lua_State *L) {
|
||||
size_t len;
|
||||
const char *s = luaL_checklstring(L, 1, &len);
|
||||
lua_Integer n = luaL_checkinteger(L, 2);
|
||||
lua_Integer posi = (n >= 0) ? 1 : len + 1;
|
||||
posi = u_posrelat(luaL_optinteger(L, 3, posi), len);
|
||||
luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 3,
|
||||
"position out of range");
|
||||
if (n == 0) {
|
||||
/* find beginning of current byte sequence */
|
||||
while (posi > 0 && iscont(s + posi)) posi--;
|
||||
}
|
||||
else {
|
||||
if (iscont(s + posi))
|
||||
luaL_error(L, "initial position is a continuation byte");
|
||||
if (n < 0) {
|
||||
while (n < 0 && posi > 0) { /* move back */
|
||||
do { /* find beginning of previous character */
|
||||
posi--;
|
||||
} while (posi > 0 && iscont(s + posi));
|
||||
n++;
|
||||
}
|
||||
}
|
||||
else {
|
||||
n--; /* do not move for 1st character */
|
||||
while (n > 0 && posi < (lua_Integer)len) {
|
||||
do { /* find beginning of next character */
|
||||
posi++;
|
||||
} while (iscont(s + posi)); /* (cannot pass final '\0') */
|
||||
n--;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (n == 0) /* did it find given character? */
|
||||
lua_pushinteger(L, posi + 1);
|
||||
else /* no such character */
|
||||
lua_pushnil(L);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int iter_aux (lua_State *L) {
|
||||
size_t len;
|
||||
const char *s = luaL_checklstring(L, 1, &len);
|
||||
lua_Integer n = lua_tointeger(L, 2) - 1;
|
||||
if (n < 0) /* first iteration? */
|
||||
n = 0; /* start from here */
|
||||
else if (n < (lua_Integer)len) {
|
||||
n++; /* skip current byte */
|
||||
while (iscont(s + n)) n++; /* and its continuations */
|
||||
}
|
||||
if (n >= (lua_Integer)len)
|
||||
return 0; /* no more codepoints */
|
||||
else {
|
||||
int code;
|
||||
const char *next = utf8_decode(s + n, &code);
|
||||
if (next == NULL || iscont(next))
|
||||
return luaL_error(L, "invalid UTF-8 code");
|
||||
lua_pushinteger(L, n + 1);
|
||||
lua_pushinteger(L, code);
|
||||
return 2;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int iter_codes (lua_State *L) {
|
||||
luaL_checkstring(L, 1);
|
||||
lua_pushcfunction(L, iter_aux);
|
||||
lua_pushvalue(L, 1);
|
||||
lua_pushinteger(L, 0);
|
||||
return 3;
|
||||
}
|
||||
|
||||
|
||||
/* pattern to match a single UTF-8 character */
|
||||
#define UTF8PATT "[\0-\x7F\xC2-\xF4][\x80-\xBF]*"
|
||||
|
||||
|
||||
static struct luaL_Reg funcs[] = {
|
||||
{"offset", byteoffset},
|
||||
{"codepoint", codepoint},
|
||||
{"char", utfchar},
|
||||
{"len", utflen},
|
||||
{"codes", iter_codes},
|
||||
/* placeholders */
|
||||
{"charpattern", NULL},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
|
||||
LUAMOD_API int luaopen_utf8 (lua_State *L) {
|
||||
luaL_newlib(L, funcs);
|
||||
lua_pushliteral(L, UTF8PATT);
|
||||
lua_setfield(L, -2, "charpattern");
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -0,0 +1,78 @@
|
||||
/*
|
||||
** $Id: lzio.c,v 1.36 2014/11/02 19:19:04 roberto Exp $
|
||||
** Buffered streams
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lzio_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "llimits.h"
|
||||
#include "lmem.h"
|
||||
#include "lstate.h"
|
||||
#include "lzio.h"
|
||||
|
||||
|
||||
int luaZ_fill (ZIO *z) {
|
||||
size_t size;
|
||||
lua_State *L = z->L;
|
||||
const char *buff;
|
||||
lua_unlock(L);
|
||||
buff = z->reader(L, z->data, &size);
|
||||
lua_lock(L);
|
||||
if (buff == NULL || size == 0)
|
||||
return EOZ;
|
||||
z->n = size - 1; /* discount char being returned */
|
||||
z->p = buff;
|
||||
return cast_uchar(*(z->p++));
|
||||
}
|
||||
|
||||
|
||||
void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader, void *data) {
|
||||
z->L = L;
|
||||
z->reader = reader;
|
||||
z->data = data;
|
||||
z->n = 0;
|
||||
z->p = NULL;
|
||||
}
|
||||
|
||||
|
||||
/* --------------------------------------------------------------- read --- */
|
||||
size_t luaZ_read (ZIO *z, void *b, size_t n) {
|
||||
while (n) {
|
||||
size_t m;
|
||||
if (z->n == 0) { /* no bytes in buffer? */
|
||||
if (luaZ_fill(z) == EOZ) /* try to read more */
|
||||
return n; /* no more input; return number of missing bytes */
|
||||
else {
|
||||
z->n++; /* luaZ_fill consumed first byte; put it back */
|
||||
z->p--;
|
||||
}
|
||||
}
|
||||
m = (n <= z->n) ? n : z->n; /* min. between n and z->n */
|
||||
memcpy(b, z->p, m);
|
||||
z->n -= m;
|
||||
z->p += m;
|
||||
b = (char *)b + m;
|
||||
n -= m;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------ */
|
||||
char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n) {
|
||||
if (n > buff->buffsize) {
|
||||
if (n < LUA_MINBUFFER) n = LUA_MINBUFFER;
|
||||
luaZ_resizebuffer(L, buff, n);
|
||||
}
|
||||
return buff->buffer;
|
||||
}
|
||||
|
||||
|
||||
@ -0,0 +1,45 @@
|
||||
#define lvm_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
#include <limits.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "ldebug.h"
|
||||
#include "ldo.h"
|
||||
#include "lfunc.h"
|
||||
#include "lgc.h"
|
||||
#include "lobject.h"
|
||||
#include "lopcodes.h"
|
||||
#include "lstate.h"
|
||||
#include "lstring.h"
|
||||
#include "ltable.h"
|
||||
#include "ltm.h"
|
||||
#include "lvm.h"
|
||||
|
||||
#include <stdlib.h>
|
||||
|
||||
int test_opcodes1()
|
||||
{
|
||||
lua_State *L;
|
||||
CallInfo *ci;
|
||||
|
||||
L = (lua_State *)calloc(1, sizeof(lua_State));
|
||||
ci = (CallInfo *)calloc(1, sizeof(CallInfo));
|
||||
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int main(const char *argv[])
|
||||
{
|
||||
int failures = 0;
|
||||
failures += test_opcodes1();
|
||||
|
||||
return failures ? 1 : 0;
|
||||
}
|
||||
Loading…
Reference in new issue