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code reformat and OP-SELF implementation aligned with Lua 5.3.2

Browse Source
pull/81/head
Dibyendu Majumdar 9 years ago
parent 17a98320f5
commit f036c53014
2 changed files with 126 additions and 164 deletions
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4
include/ltm.h
Unescape View File

@ -43,8 +43,8 @@ typedef enum {
TM_N /* number of elements in the enum */
} TMS;
/* The macro metamethod absent tests whether it is known that a table
* lacks a metamethod. This is true if a) table is NULL, or b) the bit
/* The macro metamethod absent tests whether it is known that a metatable
* lacks a metamethod. This is true if a) metatable is NULL, or b) the bit
* related to the metamethod is set in t->flags
*/
#define metamethod_absent(t, e) (((t) == NULL) || ((t)->flags & (1u<<e)))

286
src/lvm.c
Unescape View File

@ -856,7 +856,7 @@ void luaV_finishOp (lua_State *L) {
#define checkGC_(L,c) \
{ luaC_condGC(L, L->top = (c), /* limit of live values */ \
L->top = ci->top); /* restore top */ \
luai_threadyield(L); }
luai_threadyield(L); }
#define vmdispatch(o) switch(o)
@ -926,7 +926,10 @@ int luaV_execute (lua_State *L) {
} break;
case OP_LOADNIL: {
int b = GETARG_B(i);
do { setnilvalue(ra++); } while (b--);
do {
setnilvalue(ra++);
} while (b--);
} break;
case OP_GETUPVAL: {
int b = GETARG_B(i);
@ -934,26 +937,16 @@ int luaV_execute (lua_State *L) {
} break;
case OP_GETTABUP: {
TValue *key = RKC(i); /* key */
const TValue *t = cl->upvals[GETARG_B(i)]->v; /* table */
TValue *val = ra; /* value */
GETTABLE_INLINE(L, t, key, val);
base = ci->u.l.base;
TValue *upval = cl->upvals[GETARG_B(i)]->v; /* table */
TValue *rc = RKC(i); /* key */
GETTABLE_INLINE(L, upval, rc, ra);
Protect((void)0);
} break;
case OP_GETTABLE: {
TValue *key = RKC(i); /* key */
const TValue *t = RB(i); /* table */
TValue *val = ra; /* value */
GETTABLE_INLINE(L, t, key, val);
base = ci->u.l.base;
} break;
case OP_SELF: {
TValue *key = RKC(i); /* key */
const TValue *t = RB(i); /* table */
TValue *val = ra; /* value */
setobjs2s(L, ra + 1, t);
GETTABLE_INLINE(L, t, key, val);
base = ci->u.l.base;
StkId rb = RB(i); /* table */
TValue *rc = RKC(i); /* key */
GETTABLE_INLINE(L, rb, rc, ra);
Protect((void)0);
} break;
case OP_SETUPVAL: {
@ -966,11 +959,11 @@ int luaV_execute (lua_State *L) {
case OP_RAVI_SETTABLE_I:
case OP_SETTABUP:
case OP_SETTABLE: {
TValue *key = RKB(i);
const TValue *t = (op == OP_SETTABUP) ? cl->upvals[GETARG_A(i)]->v : ra;
TValue *val = RKC(i);
SETTABLE_INLINE(L, t, key, val);
base = ci->u.l.base;
TValue *rb = RKB(i);
TValue *t = (op == OP_SETTABUP) ? cl->upvals[GETARG_A(i)]->v : ra;
TValue *rc = RKC(i);
SETTABLE_INLINE(L, t, rb, rc);
Protect((void)0);
} break;
case OP_NEWTABLE: {
@ -978,141 +971,120 @@ int luaV_execute (lua_State *L) {
int c = GETARG_C(i);
Table *t = luaH_new(L);
sethvalue(L, ra, t);
if (b != 0 || c != 0)
if (b != 0 || c != 0)
luaH_resize(L, t, luaO_fb2int(b), luaO_fb2int(c));
checkGC(L, ra + 1);
} break;
case OP_SELF: {
const TValue *aux;
StkId rb = RB(i);
TValue *rc = RKC(i);
TString *key = tsvalue(rc); /* key must be a string */
setobjs2s(L, ra + 1, rb);
if (luaV_fastget(L, rb, key, aux, luaH_getstr)) {
setobj2s(L, ra, aux);
}
else Protect(luaV_finishget(L, rb, rc, ra, aux));
} break;
case OP_ADD: {
TValue *rb = RKB(i);
TValue *rc = RKC(i);
lua_Number nb;
lua_Number nc;
lua_Number nb; lua_Number nc;
if (ttisinteger(rb) && ttisinteger(rc)) {
lua_Integer ib = ivalue(rb);
lua_Integer ic = ivalue(rc);
lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc);
setivalue(ra, intop(+, ib, ic));
}
else if (tonumber(rb, &nb) && tonumber(rc, &nc)) {
setfltvalue(ra, luai_numadd(L, nb, nc));
}
else {
Protect(luaT_trybinTM(L, rb, rc, ra, TM_ADD));
}
else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_ADD)); }
} break;
case OP_SUB: {
TValue *rb = RKB(i);
TValue *rc = RKC(i);
lua_Number nb;
lua_Number nc;
lua_Number nb; lua_Number nc;
if (ttisinteger(rb) && ttisinteger(rc)) {
lua_Integer ib = ivalue(rb);
lua_Integer ic = ivalue(rc);
lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc);
setivalue(ra, intop(-, ib, ic));
}
else if (tonumber(rb, &nb) && tonumber(rc, &nc)) {
setfltvalue(ra, luai_numsub(L, nb, nc));
}
else {
Protect(luaT_trybinTM(L, rb, rc, ra, TM_SUB));
}
else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_SUB)); }
} break;
case OP_MUL: {
TValue *rb = RKB(i);
TValue *rc = RKC(i);
lua_Number nb;
lua_Number nc;
lua_Number nb; lua_Number nc;
if (ttisinteger(rb) && ttisinteger(rc)) {
lua_Integer ib = ivalue(rb);
lua_Integer ic = ivalue(rc);
lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc);
setivalue(ra, intop(*, ib, ic));
}
else if (tonumber(rb, &nb) && tonumber(rc, &nc)) {
setfltvalue(ra, luai_nummul(L, nb, nc));
}
else {
Protect(luaT_trybinTM(L, rb, rc, ra, TM_MUL));
}
else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_MUL)); }
} break;
case OP_DIV: { /* float division (always with floats) */
TValue *rb = RKB(i);
TValue *rc = RKC(i);
lua_Number nb;
lua_Number nc;
lua_Number nb; lua_Number nc;
if (tonumber(rb, &nb) && tonumber(rc, &nc)) {
setfltvalue(ra, luai_numdiv(L, nb, nc));
}
else {
Protect(luaT_trybinTM(L, rb, rc, ra, TM_DIV));
}
else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_DIV)); }
} break;
case OP_BAND: {
TValue *rb = RKB(i);
TValue *rc = RKC(i);
lua_Integer ib;
lua_Integer ic;
lua_Integer ib; lua_Integer ic;
if (tointeger(rb, &ib) && tointeger(rc, &ic)) {
setivalue(ra, intop(&, ib, ic));
}
else {
Protect(luaT_trybinTM(L, rb, rc, ra, TM_BAND));
}
else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_BAND)); }
} break;
case OP_BOR: {
TValue *rb = RKB(i);
TValue *rc = RKC(i);
lua_Integer ib;
lua_Integer ic;
lua_Integer ib; lua_Integer ic;
if (tointeger(rb, &ib) && tointeger(rc, &ic)) {
setivalue(ra, intop(|, ib, ic));
}
else {
Protect(luaT_trybinTM(L, rb, rc, ra, TM_BOR));
}
else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_BOR)); }
} break;
case OP_BXOR: {
TValue *rb = RKB(i);
TValue *rc = RKC(i);
lua_Integer ib;
lua_Integer ic;
lua_Integer ib; lua_Integer ic;
if (tointeger(rb, &ib) && tointeger(rc, &ic)) {
setivalue(ra, intop (^, ib, ic));
}
else {
Protect(luaT_trybinTM(L, rb, rc, ra, TM_BXOR));
setivalue(ra, intop(^, ib, ic));
}
else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_BXOR)); }
} break;
case OP_SHL: {
TValue *rb = RKB(i);
TValue *rc = RKC(i);
lua_Integer ib;
lua_Integer ic;
lua_Integer ib; lua_Integer ic;
if (tointeger(rb, &ib) && tointeger(rc, &ic)) {
setivalue(ra, luaV_shiftl(ib, ic));
}
else {
Protect(luaT_trybinTM(L, rb, rc, ra, TM_SHL));
}
else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_SHL)); }
} break;
case OP_SHR: {
TValue *rb = RKB(i);
TValue *rc = RKC(i);
lua_Integer ib;
lua_Integer ic;
lua_Integer ib; lua_Integer ic;
if (tointeger(rb, &ib) && tointeger(rc, &ic)) {
setivalue(ra, luaV_shiftl(ib, -ic));
}
else {
Protect(luaT_trybinTM(L, rb, rc, ra, TM_SHR));
}
else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_SHR)); }
} break;
case OP_MOD: {
TValue *rb = RKB(i);
TValue *rc = RKC(i);
lua_Number nb;
lua_Number nc;
lua_Number nb; lua_Number nc;
if (ttisinteger(rb) && ttisinteger(rc)) {
lua_Integer ib = ivalue(rb);
lua_Integer ic = ivalue(rc);
lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc);
setivalue(ra, luaV_mod(L, ib, ic));
}
else if (tonumber(rb, &nb) && tonumber(rc, &nc)) {
@ -1120,38 +1092,29 @@ int luaV_execute (lua_State *L) {
luai_nummod(L, nb, nc, m);
setfltvalue(ra, m);
}
else {
Protect(luaT_trybinTM(L, rb, rc, ra, TM_MOD));
}
else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_MOD)); }
} break;
case OP_IDIV: { /* floor division */
TValue *rb = RKB(i);
TValue *rc = RKC(i);
lua_Number nb;
lua_Number nc;
lua_Number nb; lua_Number nc;
if (ttisinteger(rb) && ttisinteger(rc)) {
lua_Integer ib = ivalue(rb);
lua_Integer ic = ivalue(rc);
lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc);
setivalue(ra, luaV_div(L, ib, ic));
}
else if (tonumber(rb, &nb) && tonumber(rc, &nc)) {
setfltvalue(ra, luai_numidiv(L, nb, nc));
}
else {
Protect(luaT_trybinTM(L, rb, rc, ra, TM_IDIV));
}
else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_IDIV)); }
} break;
case OP_POW: {
TValue *rb = RKB(i);
TValue *rc = RKC(i);
lua_Number nb;
lua_Number nc;
lua_Number nb; lua_Number nc;
if (tonumber(rb, &nb) && tonumber(rc, &nc)) {
setfltvalue(ra, luai_numpow(L, nb, nc));
}
else {
Protect(luaT_trybinTM(L, rb, rc, ra, TM_POW));
}
else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_POW)); }
} break;
case OP_UNM: {
TValue *rb = RB(i);
@ -1170,8 +1133,8 @@ int luaV_execute (lua_State *L) {
case OP_BNOT: {
TValue *rb = RB(i);
lua_Integer ib;
if (tointeger(rb, &ib)) {
setivalue(ra, intop (^, ~l_castS2U(0), ib));
if (tointeger(rb, &ib)) {
setivalue(ra, intop(^, ~l_castS2U(0), ib));
}
else {
Protect(luaT_trybinTM(L, rb, rb, ra, TM_BNOT));
@ -1179,7 +1142,7 @@ int luaV_execute (lua_State *L) {
} break;
case OP_NOT: {
TValue *rb = RB(i);
int res = l_isfalse(rb); /* next assignment may change this value */
int res = l_isfalse(rb); /* next assignment may change this value */
setbvalue(ra, res);
} break;
case OP_LEN: {
@ -1189,13 +1152,13 @@ int luaV_execute (lua_State *L) {
int b = GETARG_B(i);
int c = GETARG_C(i);
StkId rb;
L->top = base + c + 1; /* mark the end of concat operands */
L->top = base + c + 1; /* mark the end of concat operands */
Protect(luaV_concat(L, c - b + 1));
ra = RA(i); /* 'luaV_concat' may invoke TMs and move the stack */
ra = RA(i); /* 'luaV_concat' may invoke TMs and move the stack */
rb = base + b;
setobjs2s(L, ra, rb);
checkGC(L, (ra >= rb ? ra + 1 : rb));
L->top = ci->top; /* restore top */
L->top = ci->top; /* restore top */
} break;
case OP_JMP: {
dojump(ci, i, 0);
@ -1204,9 +1167,9 @@ int luaV_execute (lua_State *L) {
TValue *rb = RKB(i);
TValue *rc = RKC(i);
Protect(
if (luaV_equalobj(L, rb, rc) != GETARG_A(i))
ci->u.l.savedpc++;
else
if (luaV_equalobj(L, rb, rc) != GETARG_A(i))
ci->u.l.savedpc++;
else
donextjump(ci);
)
} break;
@ -1214,7 +1177,7 @@ int luaV_execute (lua_State *L) {
Protect(
if (luaV_lessthan(L, RKB(i), RKC(i)) != GETARG_A(i))
ci->u.l.savedpc++;
else
else
donextjump(ci);
)
} break;
@ -1222,13 +1185,13 @@ int luaV_execute (lua_State *L) {
Protect(
if (luaV_lessequal(L, RKB(i), RKC(i)) != GETARG_A(i))
ci->u.l.savedpc++;
else
else
donextjump(ci);
)
} break;
case OP_TEST: {
if (GETARG_C(i) ? l_isfalse(ra) : !l_isfalse(ra))
ci->u.l.savedpc++;
ci->u.l.savedpc++;
else
donextjump(ci);
} break;
@ -1244,7 +1207,7 @@ int luaV_execute (lua_State *L) {
case OP_CALL: {
int b = GETARG_B(i);
int nresults = GETARG_C(i) - 1;
if (b != 0) L->top = ra + b; /* else previous instruction set top */
if (b != 0) L->top = ra+b; /* else previous instruction set top */
/*
See note below under OP_RETURN for why we pass the extra
argument to luaD_precall() - it is basicaly to tell it that it
@ -1260,7 +1223,7 @@ int luaV_execute (lua_State *L) {
lua_assert(ci == L->ci);
L->top = ci->top; /* adjust results */
}
base = ci->u.l.base;
Protect((void)0); /* update 'base' */
}
else { /* Lua function */
ci = L->ci;
@ -1270,21 +1233,22 @@ int luaV_execute (lua_State *L) {
} break;
case OP_TAILCALL: {
int b = GETARG_B(i);
if (b != 0) L->top = ra + b; /* else previous instruction set top */
if (b != 0) L->top = ra+b; /* else previous instruction set top */
lua_assert(GETARG_C(i) - 1 == LUA_MULTRET);
/* See note below under OP_RETURN for why we pass the extra
argument to luaD_precall() - it is basicaly to tell it that it
was called from OP_CALL instruction
*/
if (luaD_precall(L, ra, LUA_MULTRET,
1 /* OP_CALL */)) /* C function? or JIT call */
base = ci->u.l.base;
1 /* OP_CALL */)) { /* C function? or JIT call */
Protect((void)0); /* update 'base' */
}
else {
/* tail call: put called frame (n) in place of caller one (o) */
CallInfo *nci = L->ci; /* called frame */
CallInfo *oci = nci->previous; /* caller frame */
StkId nfunc = nci->func; /* called function */
StkId ofunc = oci->func; /* caller function */
CallInfo *nci = L->ci; /* called frame */
CallInfo *oci = nci->previous; /* caller frame */
StkId nfunc = nci->func; /* called function */
StkId ofunc = oci->func; /* caller function */
/* last stack slot filled by 'precall' */
StkId lim = nci->u.l.base + getproto(nfunc)->numparams;
int aux;
@ -1293,14 +1257,14 @@ int luaV_execute (lua_State *L) {
/* move new frame into old one */
for (aux = 0; nfunc + aux < lim; aux++)
setobjs2s(L, ofunc + aux, nfunc + aux);
oci->u.l.base = ofunc + (nci->u.l.base - nfunc); /* correct base */
oci->top = L->top = ofunc + (L->top - nfunc); /* correct top */
oci->u.l.base = ofunc + (nci->u.l.base - nfunc); /* correct base */
oci->top = L->top = ofunc + (L->top - nfunc); /* correct top */
oci->u.l.savedpc = nci->u.l.savedpc;
oci->callstatus |= CIST_TAIL; /* function was tail called */
oci->callstatus |= CIST_TAIL; /* function was tail called */
oci->jitstatus = 0;
ci = L->ci = oci; /* remove new frame */
ci = L->ci = oci; /* remove new frame */
lua_assert(L->top == oci->u.l.base + getproto(ofunc)->maxstacksize);
goto newframe; /* restart luaV_execute over new Lua function */
goto newframe; /* restart luaV_execute over new Lua function */
}
} break;
case OP_RETURN: {
@ -1323,34 +1287,34 @@ int luaV_execute (lua_State *L) {
ldo.c for how luaD_precall() handles this */
return b; /* external invocation: return */
}
else { /* invocation via reentry: continue execution */
else { /* invocation via reentry: continue execution */
ci = L->ci;
if (b) { L->top = ci->top; }
if (b) L->top = ci->top;
lua_assert(isLua(ci));
lua_assert(GET_OPCODE(*((ci)->u.l.savedpc - 1)) == OP_CALL);
goto newframe; /* restart luaV_execute over new Lua function */
goto newframe; /* restart luaV_execute over new Lua function */
}
}
case OP_FORLOOP: {
if (ttisinteger(ra)) { /* integer loop? */
if (ttisinteger(ra)) { /* integer loop? */
lua_Integer step = ivalue(ra + 2);
lua_Integer idx = intop(+, ivalue(ra), step); /* increment index */
lua_Integer limit = ivalue(ra + 1);
if ((0 < step) ? (idx <= limit) : (limit <= idx)) {
ci->u.l.savedpc += GETARG_sBx(i); /* jump back */
chgivalue(ra, idx); /* update internal index... */
setivalue(ra + 3, idx); /* ...and external index */
ci->u.l.savedpc += GETARG_sBx(i); /* jump back */
chgivalue(ra, idx); /* update internal index... */
setivalue(ra + 3, idx); /* ...and external index */
}
}
else { /* floating loop */
else { /* floating loop */
lua_Number step = fltvalue(ra + 2);
lua_Number idx = luai_numadd(L, fltvalue(ra), step); /* inc. index */
lua_Number limit = fltvalue(ra + 1);
if (luai_numlt(0, step) ? luai_numle(idx, limit)
: luai_numle(limit, idx)) {
ci->u.l.savedpc += GETARG_sBx(i); /* jump back */
chgfltvalue(ra, idx); /* update internal index... */
setfltvalue(ra + 3, idx); /* ...and external index */
ci->u.l.savedpc += GETARG_sBx(i); /* jump back */
chgfltvalue(ra, idx); /* update internal index... */
setfltvalue(ra + 3, idx); /* ...and external index */
}
}
} break;
@ -1367,10 +1331,8 @@ int luaV_execute (lua_State *L) {
setivalue(plimit, ilimit);
setivalue(init, intop(-, initv, ivalue(pstep)));
}
else { /* try making all values floats */
lua_Number ninit;
lua_Number nlimit;
lua_Number nstep;
else { /* try making all values floats */
lua_Number ninit; lua_Number nlimit; lua_Number nstep;
if (!tonumber(plimit, &nlimit))
luaG_runerror(L, "'for' limit must be a number");
setfltvalue(plimit, nlimit);
@ -1384,23 +1346,23 @@ int luaV_execute (lua_State *L) {
ci->u.l.savedpc += GETARG_sBx(i);
} break;
case OP_TFORCALL: {
StkId cb = ra + 3; /* call base */
setobjs2s(L, cb + 2, ra + 2);
setobjs2s(L, cb + 1, ra + 1);
StkId cb = ra + 3; /* call base */
setobjs2s(L, cb+2, ra+2);
setobjs2s(L, cb+1, ra+1);
setobjs2s(L, cb, ra);
L->top = cb + 3; /* func. + 2 args (state and index) */
L->top = cb + 3; /* func. + 2 args (state and index) */
Protect(luaD_call(L, cb, GETARG_C(i)));
L->top = ci->top;
i = *(ci->u.l.savedpc++); /* go to next instruction */
i = *(ci->u.l.savedpc++); /* go to next instruction */
ra = RA(i);
lua_assert(GET_OPCODE(i) == OP_TFORLOOP);
goto l_tforloop;
}
case OP_TFORLOOP: {
l_tforloop:
if (!ttisnil(ra + 1)) { /* continue loop? */
setobjs2s(L, ra, ra + 1); /* save control variable */
ci->u.l.savedpc += GETARG_sBx(i); /* jump back */
l_tforloop:
if (!ttisnil(ra + 1)) { /* continue loop? */
setobjs2s(L, ra, ra + 1); /* save control variable */
ci->u.l.savedpc += GETARG_sBx(i); /* jump back */
}
} break;
case OP_SETLIST: {
@ -1414,10 +1376,10 @@ int luaV_execute (lua_State *L) {
c = GETARG_Ax(*ci->u.l.savedpc++);
}
h = hvalue(ra);
last = ((c - 1) * LFIELDS_PER_FLUSH) + n;
last = ((c-1)*LFIELDS_PER_FLUSH) + n;
if (h->ravi_array.array_type == RAVI_TTABLE) {
if (last > h->sizearray) /* needs more space? */
luaH_resizearray(L, h, last); /* pre-allocate it at once */
if (last > h->sizearray) /* needs more space? */
luaH_resizearray(L, h, last); /* pre-allocate it at once */
for (; n > 0; n--) {
TValue *val = ra + n;
luaH_setint(L, h, last--, val);
@ -1467,28 +1429,28 @@ int luaV_execute (lua_State *L) {
} break;
case OP_CLOSURE: {
Proto *p = cl->p->p[GETARG_Bx(i)];
LClosure *ncl = getcached(p, cl->upvals, base); /* cached closure */
if (ncl == NULL) /* no match? */
pushclosure(L, p, cl->upvals, base, ra); /* create a new one */
LClosure *ncl = getcached(p, cl->upvals, base); /* cached closure */
if (ncl == NULL) /* no match? */
pushclosure(L, p, cl->upvals, base, ra); /* create a new one */
else
setclLvalue(L, ra, ncl); /* push cashed closure */
setclLvalue(L, ra, ncl); /* push cashed closure */
checkGC(L, ra + 1);
} break;
case OP_VARARG: {
int b = GETARG_B(i) - 1;
int b = GETARG_B(i) - 1; /* required results */
int j;
int n = cast_int(base - ci->func) - cl->p->numparams - 1;
if (n < 0) /* less arguments than parameters? */
n = 0; /* no vararg arguments */
if (b < 0) { /* B == 0? */
b = n; /* get all var. arguments */
if (n < 0) /* less arguments than parameters? */
n = 0; /* no vararg arguments */
if (b < 0) { /* B == 0? */
b = n; /* get all var. arguments */
Protect(luaD_checkstack(L, n));
ra = RA(i); /* previous call may change the stack */
ra = RA(i); /* previous call may change the stack */
L->top = ra + n;
}
for (j = 0; j < b && j < n; j++)
for (j = 0; j < b && j < n; j++)
setobjs2s(L, ra + j, base - n + j);
for (; j < b; j++) /* complete required results with nil */
for (; j < b; j++) /* complete required results with nil */
setnilvalue(ra + j);
} break;
case OP_EXTRAARG: {

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