/* ** $Id: lua.h,v 1.332.1.2 2018/06/13 16:58:17 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 #include #include "luaconf.h" #define LUA_VERSION_MAJOR "5" #define LUA_VERSION_MINOR "3" #define LUA_VERSION_NUM 503 #define LUA_VERSION_RELEASE "5" #define LUA_VERSION "Ravi " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR #define LUA_RELEASE LUA_VERSION "." LUA_VERSION_RELEASE #define LUA_COPYRIGHT LUA_RELEASE "\nCopyright (C) 1994-2019 Lua.org, PUC-Rio\nPortions Copyright (C) 2015-2020 Dibyendu Majumdar" #define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo, W. Celes, Dibyendu Majumdar" /* mark for precompiled code ('Lua') */ #define LUA_SIGNATURE "\x1bRavi" /* option for multiple returns in 'lua_pcall' and 'lua_call' */ #define LUA_MULTRET (-1) /* ** Pseudo-indices ** (-LUAI_MAXSTACK is the minimum valid index; we keep some free empty ** space after that to help overflow detection) */ #define LUA_REGISTRYINDEX (-LUAI_MAXSTACK - 1000) #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); /** RAVI change start **/ typedef void(*ravi_Writestring)(const char *s, size_t len); typedef void(*ravi_Writeline)(void); typedef void(*ravi_Writestringerror)(const char *fmt, const char *p); /** RAVI change end **/ /* RAVI change - always enable LTESTS in debug builds */ #if !defined(NDEBUG) && !defined(NO_LUA_DEBUG) #define LUA_DEBUG #endif #ifdef LUA_DEBUG /* turn on assertions */ #include #define lua_assert(c) assert(c) #if !defined(RAVI_OPTION_STRING1) #define RAVI_OPTION_STRING1 "assertions " #endif #define RAVI_OPTION_STRING2 "ltests " /* to avoid warnings, and to make sure value is really unused */ #define UNUSED(x) (x=0, (void)(x)) /* test for sizes in 'l_sprintf' (make sure whole buffer is available) */ #undef l_sprintf #if !defined(LUA_USE_C89) #define l_sprintf(s,sz,f,i) (memset(s,0xAB,sz), snprintf(s,sz,f,i)) #else #define l_sprintf(s,sz,f,i) (memset(s,0xAB,sz), sprintf(s,f,i)) #endif /* memory-allocator control variables */ typedef struct Memcontrol { unsigned long numblocks; unsigned long total; unsigned long maxmem; unsigned long memlimit; unsigned long countlimit; unsigned long objcount[LUA_NUMTAGS]; } Memcontrol; /* ** generic variable for debug tricks */ extern void *l_Trick; /* ** Function to traverse and check all memory used by Lua */ extern int lua_checkmemory(lua_State *L); /* test for lock/unlock */ struct L_EXTRA { int lock; int *plock; }; #undef LUA_EXTRASPACE #define LUA_EXTRASPACE sizeof(struct L_EXTRA) #define getlock(l) cast(struct L_EXTRA*, lua_getextraspace(l)) #define luai_userstateopen(l) \ (getlock(l)->lock = 0, getlock(l)->plock = &(getlock(l)->lock)) #define luai_userstateclose(l) \ lua_assert(getlock(l)->lock == 1 && getlock(l)->plock == &(getlock(l)->lock)) #define luai_userstatethread(l,l1) \ lua_assert(getlock(l1)->plock == getlock(l)->plock) #define luai_userstatefree(l,l1) \ lua_assert(getlock(l)->plock == getlock(l1)->plock) #define lua_lock(l) lua_assert((*getlock(l)->plock)++ == 0) #define lua_unlock(l) lua_assert(--(*getlock(l)->plock) == 0) LUA_API int luaB_opentests(lua_State *L); LUA_API void *debug_realloc(void *ud, void *block, size_t osize, size_t nsize); LUA_API Memcontrol* luaB_getmemcontrol(void); #if defined(lua_c) #define luaL_newstate() lua_newstate(debug_realloc, luaB_getmemcontrol()) #define luaL_openlibs(L) \ { (luaL_openlibs)(L); \ luaL_requiref(L, "T", luaB_opentests, 1); \ lua_pop(L, 1); } #endif #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 int (lua_resetthread) (lua_State *L); 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); /* RAVI change: ** This is a Ravi extension - it is similar to lua_typename() except ** that it provides more granular type information, and also uses ** metamethod __name() if available for userdata and table types */ LUA_API const char * (ravi_typename) (lua_State *L, int idx); 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) /* A Lua Closure must be on top of the stack. This will set _ENV upvalue */ LUA_API void (ravi_closure_setenv) (lua_State* L); 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); LUA_API void (raviV_raise_error) (lua_State *L, int errorcode); /* ** 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 #define LUA_GCGEN 10 #define LUA_GCINC 11 LUA_API int (lua_gc) (lua_State *L, int what, ...); /* ** 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_pushstring(L, "" s) #define lua_pushglobaltable(L) \ ((void)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) */ short stacklevel; /* RAVI change: Current stack level within the Lua State - base level is 0 */ /* private part */ struct CallInfo *i_ci; /* active function */ }; /* }====================================================================== */ /* RAVI Extensions */ LUA_API void (ravi_pushcfastcall)(lua_State *L, void *ptr, int tag); /* Allowed tags - subject to change. Max value is 128. Note that each tag requires special handling in ldo.c */ enum { RAVI_TFCF_EXP = 1, RAVI_TFCF_LOG = 2, RAVI_TFCF_D_D = 3, }; /* Create an integer array (specialization of Lua table) * of given size and initialize array with supplied initial value */ LUA_API void ravi_create_integer_array(lua_State *L, int narray, lua_Integer initial_value); /* Create an number array (specialization of Lua table) * of given size and initialize array with supplied initial value */ LUA_API void ravi_create_number_array(lua_State *L, int narray, lua_Number initial_value); /* Create a slice of an existing array * The original table containing the array is inserted into the * the slice as a value against special key so that * the parent table is not garbage collected while this array contains a * reference to it * The array slice starts at start but start-1 is also accessible because of the * implementation having array values starting at 0. * A slice must not attempt to release the data array as this is not owned by * it, * and in fact may point to garbage from a memory allocater's point of view. */ LUA_API void ravi_create_slice(lua_State *L, int idx, unsigned int start, unsigned int len); /* Tests if the argument is a number array */ LUA_API int ravi_is_number_array(lua_State *L, int idx); /* Tests if the argument is a integer array */ LUA_API int ravi_is_integer_array(lua_State *L, int idx); /* Get the raw data associated with the number array at idx. * Note that Ravi arrays have an extra element at offset 0 - this * function returns a pointer to &data[0]. The number of * array elements is returned in length. */ typedef struct { lua_Number *data; unsigned int length; } Ravi_NumberArray; LUA_API void ravi_get_number_array_rawdata(lua_State *L, int idx, Ravi_NumberArray *array_data); /* Get the raw data associated with the integer array at idx. * Note that Ravi arrays have an extra element at offset 0 - this * function returns a pointer to &data[0]. The number of * array elements is returned in length. */ typedef struct { lua_Integer *data; unsigned int length; } Ravi_IntegerArray; LUA_API void ravi_get_integer_array_rawdata(lua_State *L, int idx, Ravi_IntegerArray *array_data); /* API to set the output functions used by Lua / Ravi * This allows the default implementations to be overridden */ LUA_API void ravi_set_writefuncs(lua_State *L, ravi_Writestring writestr, ravi_Writeline writeln, ravi_Writestringerror writestringerr); /* Following are the default implementations */ LUA_API void ravi_writestring(lua_State *L, const char *s, size_t len); LUA_API void ravi_writeline(lua_State *L); LUA_API void ravi_writestringerror(lua_State *L, const char *fmt, const char *p); /* The debugger can set some data - but only once */ LUA_API void ravi_set_debugger_data(lua_State *L, void *data); LUA_API void *ravi_get_debugger_data(lua_State *L); /* Dumps the ravi Bytecode to stdout */ LUA_API void ravi_dump_function(lua_State *L); /* Returns a table of lines containing Ravi bytecode */ LUA_API int ravi_list_code(lua_State *L); /* Returns a table with various system limits */ LUA_API int ravi_get_limits(lua_State *L); /* Options */ LUA_API const char *raviV_options(struct lua_State *L); /* Following are for debugging purposes only */ LUAI_DDEC int ravi_parser_debug; LUA_API void ravi_set_debuglevel(int level); #define RAVI_DEBUG_STACK(p) if ((ravi_parser_debug & 8) != 0) {p;} else {} #define RAVI_BYTECODE_PROFILING_ENABLED 0 /****************************************************************************** * Copyright (C) 1994-2019 Lua.org, PUC-Rio. * Portions Copyright (C) 2015-2020 Dibyendu Majumdar * * 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