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undef

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This commit is contained in:
Vitor Santos Costa 2018-03-23 18:48:16 +00:00
parent c2f2490fee
commit 56e676ef65
1 changed files with 34 additions and 37 deletions
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71
C/absmi.c
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@ -916,9 +916,7 @@ static int interrupt_dexecute(USES_REGS1) {
static void undef_goal(USES_REGS1) {
PredEntry *pe = PredFromDefCode(P);
CELL *b;
CELL *b0;
BEGD(d0);
/* avoid trouble with undefined dynamic procedures */
/* I assume they were not locked beforehand */
@ -928,6 +926,15 @@ static void undef_goal(USES_REGS1) {
PP = pe;
}
#endif
if (pe->PredFlags & (DynamicPredFlag | LogUpdatePredFlag | MultiFileFlag) ) {
#if defined(YAPOR) || defined(THREADS)
UNLOCKPE(19, PP);
PP = NULL;
#endif
CalculateStackGap(PASS_REGS1);
P = FAILCODE;
return;
}
if (UndefCode == NULL || UndefCode->OpcodeOfPred == UNDEF_OPCODE) {
fprintf(stderr,"call to undefined Predicates %s ->", IndicatorOfPred(pe));
Yap_DebugPlWriteln(ARG1);
@ -937,15 +944,6 @@ static void undef_goal(USES_REGS1) {
#if defined(YAPOR) || defined(THREADS)
UNLOCKPE(19, PP);
PP = NULL;
#endif
CalculateStackGap(PASS_REGS1);
P = FAILCODE;
return;
}
if (pe->PredFlags & (DynamicPredFlag | LogUpdatePredFlag | MultiFileFlag) ) {
#if defined(YAPOR) || defined(THREADS)
UNLOCKPE(19, PP);
PP = NULL;
#endif
CalculateStackGap(PASS_REGS1);
P = FAILCODE;
@ -955,27 +953,16 @@ static void undef_goal(USES_REGS1) {
UNLOCKPE(19, PP);
PP = NULL;
#endif
d0 = pe->ArityOfPE;
if (pe->ModuleOfPred == PROLOG_MODULE) {
if (CurrentModule == PROLOG_MODULE)
HR[0] = MkAtomTerm(Yap_LookupAtom("prolog"));
else
HR[0] = CurrentModule;
if (pe->ArityOfPE == 0) {
d0 = MkAtomTerm((Atom)(pe->FunctorOfPred));
} else {
HR[0] = Yap_Module_Name(pe);
}
b = b0 = HR;
HR += 2;
if (d0 == 0) {
b[1] = MkAtomTerm((Atom)(pe->FunctorOfPred));
} else {
b[1] = AbsAppl(b+2);
d0 = AbsAppl(HR);
*HR++ = (CELL)pe->FunctorOfPred;
b += 3;
HR += d0;
CELL *ip=HR, *imax = HR+pe->ArityOfPE;
HR = imax;
BEGP(pt1);
pt1 = XREGS + 1;
for (; d0 > 0; --d0) {
for (; ip < imax; ip++) {
BEGD(d1);
BEGP(pt0);
pt0 = pt1++;
@ -983,18 +970,17 @@ static void undef_goal(USES_REGS1) {
deref_head(d1, undef_unk);
undef_nonvar:
/* just copy it to the heap */
*b++ = d1;
*ip = d1;
continue;
derefa_body(d1, pt0, undef_unk, undef_nonvar);
if (pt0 <= HR) {
/* variable is safe */
*b++ = (CELL)pt0;
*ip = (CELL)pt0;
} else {
/* bind it, in case it is a local variable */
d1 = Unsigned(HR);
RESET_VARIABLE(HR);
HR += 1;
d1 = Unsigned(ip);
RESET_VARIABLE(ip);
Bind_Local(pt0, d1);
}
ENDP(pt0);
@ -1002,9 +988,20 @@ static void undef_goal(USES_REGS1) {
}
ENDP(pt1);
}
ENDD(d0);
ARG1 = AbsPair(b0);
ARG2 = Yap_getUnknownModule(Yap_GetModuleEntry(b0[0]));
ARG1 = AbsPair(HR);
HR[1] = d0;
ENDD(d0);
if (pe->ModuleOfPred == PROLOG_MODULE) {
if (CurrentModule == PROLOG_MODULE)
HR[0] = TermProlog;
else
HR[0] = CurrentModule;
} else {
HR[0] = Yap_Module_Name(pe);
}
ARG2 = Yap_getUnknownModule(Yap_GetModuleEntry(HR[0]));
HR += 2;
#ifdef LOW_LEVEL_TRACER
if (Yap_do_low_level_trace)
low_level_trace(enter_pred, UndefCode, XREGS + 1);