diogo/yap-6.3
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for number free flag setting

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This commit is contained in:
Vítor Santos Costa 2013-11-25 11:26:42 +01:00
parent 4e7e9b0273
commit af4e9b4bbc
1 changed files with 82 additions and 0 deletions
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82
C/stdpreds.c
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@ -1086,6 +1086,87 @@ p_flags( USES_REGS1 )
return TRUE;
}
static Int
p_set_flag( USES_REGS1 )
{ /* $flags(+Functor,+Mod,?OldFlags,?NewFlags) */
PredEntry *pe;
Term t1 = Deref(ARG1);
Term mod = Deref(ARG2);
Term v = Deref(ARG4);
char *s;
if (IsVarTerm(mod) || !IsAtomTerm(mod)) {
return(FALSE);
}
if (IsVarTerm(t1))
return (FALSE);
if (IsAtomTerm(t1)) {
while ((pe = RepPredProp(PredPropByAtom(AtomOfTerm(t1), mod)))== NULL) {
if (!Yap_growheap(FALSE, 0, NULL)) {
Yap_Error(OUT_OF_HEAP_ERROR, ARG1, "while generating new predicate");
return FALSE;
}
t1 = Deref(ARG1);
mod = Deref(ARG2);
}
} else if (IsApplTerm(t1)) {
Functor funt = FunctorOfTerm(t1);
while ((pe = RepPredProp(PredPropByFunc(funt, mod)))== NULL) {
if (!Yap_growheap(FALSE, 0, NULL)) {
Yap_Error(OUT_OF_HEAP_ERROR, ARG1, "while generating new predicate");
return FALSE;
}
t1 = Deref(ARG1);
mod = Deref(ARG2);
}
} else
return (FALSE);
if (EndOfPAEntr(pe))
return (FALSE);
ARG3 = Deref(ARG3);
if (IsVarTerm(ARG3)) {
UNLOCK(pe->PELock);
return (FALSE);
} else if (!IsAtomTerm(ARG3)) {
Yap_Error(TYPE_ERROR_ATOM,ARG3,"set_property/1");
return(FALSE);
}
v = Deref(ARG4);
if (IsVarTerm(ARG4)) {
UNLOCK(pe->PELock);
return (FALSE);
} else if (!IsIntTerm(v)) {
Yap_Error(TYPE_ERROR_ATOM,v,"set_property/1");
return(FALSE);
}
s = RepAtom(AtomOfTerm(ARG3))->StrOfAE;
if (v == MkIntTerm(1)) {
if (!strcmp(s, "quasi_quotation_syntax")) {
pe->ExtraPredFlags |= QuasiQuotationPredFlag;
} else if (!strcmp(s, "trace")) {
// proc->ExtraPredFlags |= QuasiQuotationPredFlag;
} else {
fprintf( stderr, "not implemented");
UNLOCK(pe->PELock);
return FALSE;
}
} else if (v == MkIntTerm(0)) {
if (!strcmp(s, "quasi_quotation_syntax")) {
pe->ExtraPredFlags &= ~QuasiQuotationPredFlag;
} else if (!strcmp(s, "trace")) {
// proc->ExtraPredFlags |= QuasiQuotationPredFlag;
} else {
fprintf( stderr, "not implemented");
UNLOCK(pe->PELock);
return FALSE;
}
}
UNLOCK(pe->PELock);
return TRUE;
}
static int
AlreadyHidden(char *name)
{
@ -1940,6 +2021,7 @@ Yap_InitCPreds(void)
Yap_InitCPred("$exit_undefp", 0, p_exitundefp, SafePredFlag);
/* Accessing and changing the flags for a predicate */
Yap_InitCPred("$flags", 4, p_flags, SyncPredFlag);
Yap_InitCPred("$set_flag", 4, p_set_flag, SyncPredFlag);
/* hiding and unhiding some predicates */
Yap_InitCPred("hide", 1, p_hide, SafePredFlag|SyncPredFlag);
Yap_InitCPred("unhide", 1, p_unhide, SafePredFlag|SyncPredFlag);