Insert Christian patches:
- uncutable predicates; - call_cleanup/2. git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@615 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
This commit is contained in:
vsc
parent
e606c427fe
commit
342faf6d89
@ -149,6 +149,8 @@ LookupAtom(char *atom)
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/* compute hash */
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p = (unsigned char *)atom;
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HashFunction(p, hash);
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if (!strcmp("in line 284, system predicate see/1 at prolog:$$compile_stat/5 (clause 1)",atom))
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fprintf(stderr,"vsc: has is %d\n", hash);
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WRITE_LOCK(HashChain[hash].AERWLock);
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a = HashChain[hash].Entry;
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/* search atom in chain */
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119
C/compiler.c
119
C/compiler.c
@ -34,8 +34,8 @@ STATIC_PROTO(void c_arg, (Int, Term, unsigned int));
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STATIC_PROTO(void c_args, (Term));
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STATIC_PROTO(void c_eq, (Term, Term));
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STATIC_PROTO(void c_test, (Int, Term));
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STATIC_PROTO(void c_bifun, (Int, Term, Term, Term, int));
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STATIC_PROTO(void c_goal, (Term, int));
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STATIC_PROTO(void c_bifun, (Int, Term, Term, Term, int, int *));
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STATIC_PROTO(void c_goal, (Term, int, int *));
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STATIC_PROTO(void get_type_info, (Term));
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STATIC_PROTO(void c_body, (Term, int));
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STATIC_PROTO(void get_cl_info, (Term));
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@ -701,7 +701,7 @@ bip_cons Op,Xk,Ri,C
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*/
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static void
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c_bifun(Int Op, Term t1, Term t2, Term t3, int mod)
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c_bifun(Int Op, Term t1, Term t2, Term t3, int mod, int *uncutable)
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{
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/* compile Z = X Op Y arithmetic function */
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/* first we fetch the arguments */
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@ -820,7 +820,7 @@ c_bifun(Int Op, Term t1, Term t2, Term t3, int mod)
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if (IsNumTerm(t1)) {
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/* we will always fail */
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if (i2)
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c_goal(MkAtomTerm(AtomFalse), mod);
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c_goal(MkAtomTerm(AtomFalse), mod, uncutable);
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} else if (!IsAtomTerm(t1)) {
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char s[32];
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@ -891,7 +891,7 @@ c_bifun(Int Op, Term t1, Term t2, Term t3, int mod)
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} else if (IsApplTerm(t2)) {
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Functor f = FunctorOfTerm(t2);
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if (i1 < 1 || i1 > ArityOfFunctor(f)) {
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c_goal(MkAtomTerm(AtomFalse), mod);
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c_goal(MkAtomTerm(AtomFalse), mod, uncutable);
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} else {
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c_eq(ArgOfTerm(i1, t2), t3);
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}
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@ -905,7 +905,7 @@ c_bifun(Int Op, Term t1, Term t2, Term t3, int mod)
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c_eq(TailOfTerm(t2), t3);
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return;
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default:
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c_goal(MkAtomTerm(AtomFalse), mod);
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c_goal(MkAtomTerm(AtomFalse), mod, uncutable);
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return;
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}
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}
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@ -1065,13 +1065,13 @@ c_bifun(Int Op, Term t1, Term t2, Term t3, int mod)
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}
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static void
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c_functor(Term Goal, int mod)
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c_functor(Term Goal, int mod, int *uncutable)
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{
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Term t1 = ArgOfTerm(1, Goal);
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Term t2 = ArgOfTerm(2, Goal);
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Term t3 = ArgOfTerm(3, Goal);
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if (IsVarTerm(t1) && IsNewVar(t1)) {
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c_bifun(_functor, t2, t3, t1, mod);
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c_bifun(_functor, t2, t3, t1, mod, uncutable);
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} else if (IsNonVarTerm(t1)) {
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/* just split the structure */
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if (IsAtomicTerm(t1)) {
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@ -1123,7 +1123,7 @@ IsTrueGoal(Term t) {
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}
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static void
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c_goal(Term Goal, int mod)
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c_goal(Term Goal, int mod, int* uncutable)
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{
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Functor f;
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PredEntry *p;
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@ -1147,13 +1147,16 @@ c_goal(Term Goal, int mod)
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}
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if (IsNumTerm(Goal)) {
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FAIL("goal can not be a number", TYPE_ERROR_CALLABLE, Goal);
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} else if (IsRefTerm(Goal)) {
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}
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else if (IsRefTerm(Goal)) {
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Error_TYPE = TYPE_ERROR_DBREF;
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Error_Term = Goal;
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FAIL("goal argument in static procedure can not be a data base reference", TYPE_ERROR_CALLABLE, Goal);
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} else if (IsPairTerm(Goal)) {
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}
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else if (IsPairTerm(Goal)) {
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Goal = MkApplTerm(FunctorCall, 1, &Goal);
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} else if (IsVarTerm(Goal)) {
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}
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else if (IsVarTerm(Goal)) {
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Goal = MkApplTerm(FunctorCall, 1, &Goal);
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}
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if (IsAtomTerm(Goal)) {
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@ -1176,7 +1179,11 @@ c_goal(Term Goal, int mod)
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return;
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}
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else if (atom == AtomCut) {
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if (*uncutable){
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Error_TYPE = UNKNOWN_ERROR; /*ceh: needs an official assigned error*/
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Error_Term = Goal;
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FAIL("tried to cut an uncutable goal", UNKNOWN_ERROR, Goal);
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}
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if (profiling)
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emit(enter_profiling_op, (CELL)RepPredProp(PredPropByAtom(AtomCut,0)), Zero);
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else if (call_counting)
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@ -1189,7 +1196,8 @@ c_goal(Term Goal, int mod)
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if (is_tabled(CurrentPred)) {
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emit(cut_op, Zero, Zero);
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emit(table_new_answer_op, Zero, CurrentPred->ArityOfPE);
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} else
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}
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else
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#endif /* TABLING */
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{
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emit(cutexit_op, Zero, Zero);
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@ -1239,11 +1247,12 @@ c_goal(Term Goal, int mod)
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#ifdef TABLING
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READ_UNLOCK(CurrentPred->PRWLock);
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#endif
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} else
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}
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else
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++goalno;
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onbranch = pop_branch();
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emit(pop_or_op, Zero, Zero);
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/* --onbranch; */
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/* --onbranch; */
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return;
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}
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#endif /* YAPOR */
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@ -1342,16 +1351,16 @@ c_goal(Term Goal, int mod)
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}
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save = onlast;
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onlast = FALSE;
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c_goal(ArgOfTerm(1, arg), mod);
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c_goal(ArgOfTerm(1, arg), mod, uncutable);
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if (!optimizing_comit) {
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c_var((Term) comitvar, comit_b_flag,
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1);
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}
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onlast = save;
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c_goal(ArgOfTerm(2, arg), mod);
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c_goal(ArgOfTerm(2, arg), mod, uncutable);
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}
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else
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c_goal(ArgOfTerm(1, Goal), mod);
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c_goal(ArgOfTerm(1, Goal), mod, uncutable);
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if (!onlast) {
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emit(jump_op, m, Zero);
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}
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@ -1368,13 +1377,13 @@ c_goal(Term Goal, int mod)
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else {
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optimizing_comit = FALSE; /* not really necessary */
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}
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c_goal(Goal, mod);
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c_goal(Goal, mod, uncutable);
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/* --onbranch; */
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onbranch = pop_branch();
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if (!onlast) {
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emit(label_op, m, Zero);
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if ((onlast = save))
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c_goal(MkAtomTerm(AtomTrue), mod);
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c_goal(MkAtomTerm(AtomTrue), mod, uncutable);
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}
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emit(pop_or_op, Zero, Zero);
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return;
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@ -1384,9 +1393,9 @@ c_goal(Term Goal, int mod)
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int t2 = ArgOfTerm(2, Goal);
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onlast = FALSE;
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c_goal(ArgOfTerm(1, Goal), mod);
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c_goal(ArgOfTerm(1, Goal), mod, uncutable);
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onlast = save;
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c_goal(t2, mod);
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c_goal(t2, mod, uncutable);
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return;
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}
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else if (f == FunctorNot || f == FunctorAltNot) {
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@ -1410,7 +1419,7 @@ c_goal(Term Goal, int mod)
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emit_3ops(push_or_op, label, Zero, Zero);
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emit_3ops(either_op, label, Zero, Zero);
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emit(restore_tmps_op, Zero, Zero);
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c_goal(ArgOfTerm(1, Goal), mod);
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c_goal(ArgOfTerm(1, Goal), mod, uncutable);
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c_var(comitvar, comit_b_flag, 1);
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onlast = save;
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emit(fail_op, end_label, Zero);
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@ -1421,7 +1430,7 @@ c_goal(Term Goal, int mod)
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onlast = save;
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/* --onbranch; */
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onbranch = pop_branch();
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c_goal(MkAtomTerm(AtomTrue), mod);
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c_goal(MkAtomTerm(AtomTrue), mod, uncutable);
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++goalno;
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emit(pop_or_op, Zero, Zero);
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return;
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@ -1438,12 +1447,13 @@ c_goal(Term Goal, int mod)
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}
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onlast = FALSE;
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c_var(comitvar, save_b_flag, 1);
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c_goal(ArgOfTerm(1, Goal), mod);
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c_goal(ArgOfTerm(1, Goal), mod, uncutable);
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c_var(comitvar, comit_b_flag, 1);
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onlast = save;
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c_goal(ArgOfTerm(2, Goal), mod);
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c_goal(ArgOfTerm(2, Goal), mod, uncutable);
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return;
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} else if (f == FunctorEq) {
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}
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else if (f == FunctorEq) {
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if (profiling)
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emit(enter_profiling_op, (CELL)p, Zero);
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else if (call_counting)
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@ -1463,7 +1473,8 @@ c_goal(Term Goal, int mod)
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#endif
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}
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return;
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} else if (p->PredFlags & AsmPredFlag) {
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}
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else if (p->PredFlags & AsmPredFlag) {
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int op = p->PredFlags & 0x7f;
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if (profiling)
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emit(enter_profiling_op, (CELL)p, Zero);
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@ -1485,15 +1496,17 @@ c_goal(Term Goal, int mod)
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#endif
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}
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return;
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} else if (op >= _plus && op <= _functor) {
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}
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else if (op >= _plus && op <= _functor) {
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if (op == _functor) {
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c_functor(Goal, mod);
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} else {
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c_functor(Goal, mod, uncutable);
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}
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else {
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c_bifun(op,
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ArgOfTerm(1, Goal),
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ArgOfTerm(2, Goal),
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ArgOfTerm(3, Goal),
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mod);
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mod, uncutable);
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}
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if (onlast) {
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emit(deallocate_op, Zero, Zero);
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@ -1509,10 +1522,12 @@ c_goal(Term Goal, int mod)
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#endif
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}
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return;
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} else {
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}
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else {
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c_args(Goal);
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}
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} else if (p->PredFlags & BinaryTestPredFlag) {
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}
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else if (p->PredFlags & BinaryTestPredFlag) {
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Term a1 = ArgOfTerm(1,Goal);
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if (IsVarTerm(a1) && !IsNewVar(a1)) {
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Term a2 = ArgOfTerm(2,Goal);
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@ -1528,7 +1543,8 @@ c_goal(Term Goal, int mod)
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c_var(a1, bt1_flag, 2);
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current_p0 = p0;
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c_var(a2, bt2_flag, 2);
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} else {
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}
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else {
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Term t2 = MkVarTerm();
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if (H == (CELL *)freep0) {
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/* oops, too many new variables */
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@ -1541,7 +1557,8 @@ c_goal(Term Goal, int mod)
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current_p0 = p0;
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c_var(t2, bt2_flag, 2);
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}
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} else {
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}
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else {
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Term a2 = ArgOfTerm(2,Goal);
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Term t1 = MkVarTerm();
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if (H == (CELL *)freep0) {
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@ -1555,7 +1572,8 @@ c_goal(Term Goal, int mod)
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c_var(t1, bt1_flag, 2);
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current_p0 = p0;
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c_var(a2, bt2_flag, 2);
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} else {
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}
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else {
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Term t2 = MkVarTerm();
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if (H == (CELL *)freep0) {
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/* oops, too many new variables */
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@ -1583,7 +1601,8 @@ c_goal(Term Goal, int mod)
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#endif
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}
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return;
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} else {
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}
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else {
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if (profiling)
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emit(enter_profiling_op, (CELL)p, Zero);
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else if (call_counting)
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@ -1591,12 +1610,17 @@ c_goal(Term Goal, int mod)
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c_args(Goal);
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}
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}
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if (p->PredFlags & UnCutAblePredFlag ){
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(void)(*uncutable)++;
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}
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if (p->PredFlags & SafePredFlag
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#ifdef YAPOR
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/* synchronisation means saving the state, so it is never safe in YAPOR */
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if (p->PredFlags & SafePredFlag && !(p->PredFlags & SyncPredFlag)) {
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#else
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if (p->PredFlags & SafePredFlag) {
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&& !(p->PredFlags & SyncPredFlag)
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#endif /* YAPOR */
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) {
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if (onlast)
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emit(deallocate_op, Zero, Zero);
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emit(safe_call_op, (CELL) p0, Zero);
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@ -1644,13 +1668,15 @@ c_goal(Term Goal, int mod)
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if (is_tabled(CurrentPred)) {
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emit_3ops(call_op, (CELL) p0, Zero, Zero);
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emit(table_new_answer_op, Zero, CurrentPred->ArityOfPE);
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} else
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}
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else
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#endif /* TABLING */
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emit(execute_op, (CELL) p0, Zero);
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#ifdef TABLING
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READ_UNLOCK(CurrentPred->PRWLock);
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#endif
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} else {
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}
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else {
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emit_3ops(call_op, (CELL) p0, Zero, Zero);
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}
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}
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@ -1686,6 +1712,7 @@ get_type_info(Term Goal)
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static void
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c_body(Term Body, int mod)
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{
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int uncutable=0;
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onhead = FALSE;
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BodyStart = cpc;
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goalno = 1;
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@ -1705,11 +1732,11 @@ c_body(Term Body, int mod)
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Body = ArgOfTerm(1, Body);
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break;
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}
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c_goal(ArgOfTerm(1, Body), mod);
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c_goal(ArgOfTerm(1, Body), mod, &uncutable);
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Body = t2;
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}
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onlast = TRUE;
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c_goal(Body, mod);
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c_goal(Body, mod, &uncutable);
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}
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static void
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3
C/init.c
3
C/init.c
@ -396,6 +396,9 @@ static Opdef Ops[] = {
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#ifdef TABLING
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{"table", fx, 1150},
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#endif /* TABLING */
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#ifndef UNCUTABLE
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{"uncutable", fx, 1150},
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#endif /*UNCUTABLE ceh:*/
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{";", xfy, 1100},
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{"|", xfy, 1100},
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/* {";", yf, 1100}, not allowed in ISO */
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120
library/cleanup.yap
Normal file
120
library/cleanup.yap
Normal file
@ -0,0 +1,120 @@
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:- module( cleanup, [
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call_cleanup/2,
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call_cleanup/1,
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on_cleanup/1,
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cleanup_all/0
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]).
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/*
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public interface:
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call_cleanup(Goal).
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call_cleanup(Goal,CleanUpGoal).
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Goal will be called in a cleanup-context, where any registered
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CleanUpGoal inside of that context will be called when Goal is left,
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either by a fail, cut or exeption.
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It is possible to nest cleanup contexts.
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on_cleanup(CleanUpGoal).
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registers CleanUpGoal to the current cleanup context.
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CleanUpGoal's are executed in reverse order of their registration.
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throws an exception if called outside of any cleanup-context.
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cleanup_all.
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calls all pending CleanUpGoals and resets the cleanup-system to an initial state.
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should only be used as one of the last calls in the main program.
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hidden predicates:
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most private predicates could also be used in special cases, such as manually setting up cleanup-contexts.
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Read the Source.
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*/
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:- meta_predicate
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call_cleanup(:,:),
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call_cleanup(:),
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on_cleanup(:),
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on_cleanup(?,:),
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on_cleanupz(:),
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on_cleanupz(?,:).
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:- initialization(init_cleanup).
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init_cleanup :-
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get_value('cleanup:level',[]),
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set_value('cleanup:level',0).
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init_cleanup.
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% call goal G with a cleanup CL in a cleanup context
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call_cleanup(G,CL) :-
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needs_cleanup(L),
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on_cleanup(L,CL),
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(
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catch(G,X,(do_cleanup(L),throw(X)))
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;
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do_cleanup(L)
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).
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% call a goal G in a cleanup context
|
||||
call_cleanup(G) :-
|
||||
needs_cleanup(L),
|
||||
(
|
||||
catch(G,X,(do_cleanup(L),throw(X)))
|
||||
;
|
||||
do_cleanup(L)
|
||||
).
|
||||
|
||||
|
||||
% begin cleanup level
|
||||
needs_cleanup(CL) :-
|
||||
get_value('cleanup:level',L),
|
||||
CL is L + 1,
|
||||
set_value('cleanup:level',CL).
|
||||
|
||||
|
||||
% leave cleanup level, call all registred cleanup predicates within
|
||||
do_cleanup(CL) :-
|
||||
CN is CL - 1,
|
||||
set_value('cleanup:level',CN),
|
||||
next_cleanup(CL).
|
||||
|
||||
next_cleanup(CL) :-
|
||||
!,recorded(cleanup:handle,(L,G),R),
|
||||
CL =< L,
|
||||
erase(R),
|
||||
(call(G);true),
|
||||
next_cleanup(CL).
|
||||
|
||||
|
||||
% clean up all remaining stuff / reinitialize cleanup-module
|
||||
cleanup_all :- do_cleanup(1).
|
||||
|
||||
|
||||
% register a cleanup predicate (normal reverse-order cleanup)
|
||||
on_cleanup(G) :-
|
||||
get_value('cleanup:level',L),
|
||||
on_cleanup(L,G).
|
||||
|
||||
on_cleanup(L,G) :-
|
||||
L =< 0,
|
||||
throw(no_cleanup_context(G)).
|
||||
on_cleanup(L,G) :-
|
||||
callable(G),
|
||||
recorda(cleanup:handle,(L,G),_).
|
||||
|
||||
|
||||
% register a cleanup predicate (reverse-reverse-order cleanup)
|
||||
on_cleanupz(G) :-
|
||||
get_value('cleanup:level',L),
|
||||
on_cleanupz(L,G).
|
||||
|
||||
on_cleanupz(L,G) :-
|
||||
L =< 0,
|
||||
throw(no_cleanup_context(G)).
|
||||
on_cleanupz(L,G) :-
|
||||
callable(G),
|
||||
recordz(cleanup:handle,(L,G),_).
|
||||
|
||||
@ -189,7 +189,9 @@ typedef enum {
|
||||
SequentialPredFlag=0x000020L, /* may not create par. choice points!*/
|
||||
#endif /* YAPOR */
|
||||
ProfiledPredFlag = 0x000010L, /* pred is being profiled */
|
||||
LogUpdatePredFlag= 0x000008L /* dynamic predicate with log. upd. sem.*/
|
||||
LogUpdatePredFlag= 0x000008L, /* dynamic predicate with log. upd. sem.*/
|
||||
/* ceh: wtf! 0x000004L is used somewhere? */
|
||||
UnCutAblePredFlag= 0x000002L /* Predicate might no been cut off */
|
||||
} pred_flag;
|
||||
|
||||
/* profile data */
|
||||
|
||||
@ -39,6 +39,7 @@
|
||||
'$directive'(use_module(_)).
|
||||
'$directive'(use_module(_,_)).
|
||||
'$directive'(use_module(_,_,_)).
|
||||
'$directive'(uncutable(_)).
|
||||
|
||||
'$exec_directive'(multifile(D), _, M) :-
|
||||
'$system_catch'('$multifile'(D, M), M,
|
||||
@ -94,6 +95,9 @@
|
||||
'$wait'(BlockSpec).
|
||||
'$exec_directive'(table(PredSpec), _, M) :-
|
||||
'$table'(PredSpec, M).
|
||||
'$exec_directive'(uncutable(PredSpec), _, M) :-
|
||||
'$uncutable'(PredSpec, M).
|
||||
|
||||
|
||||
'$exec_directives'((G1,G2), Mode, M) :- !,
|
||||
'$exec_directives'(G1, Mode, M),
|
||||
@ -101,8 +105,10 @@
|
||||
'$exec_directives'(G, Mode, M) :-
|
||||
'$exec_directive'(G, Mode, M).
|
||||
|
||||
|
||||
|
||||
'$uncutable'(A/N, Mod) :-
|
||||
functor(T,A,N),'$flags'(T,Mod,F,F),
|
||||
NF is F \/ 16'2,
|
||||
'$flags'(T, Mod, F, NF).
|
||||
|
||||
yap_flag(V,Out) :-
|
||||
var(V), !,
|
||||
|
||||
@ -165,6 +165,8 @@ print_message(Level, Mss) :-
|
||||
'$preprocess_stack'(Gs, NGs).
|
||||
'$beautify_hidden_goal'('$recordedp',_,prolog,ClNo,Gs,NGs) :- !,
|
||||
'$preprocess_stack'(Gs, NGs).
|
||||
'$beautify_hidden_goal'('$continue_with_command',_,prolog,ClNo,Gs,NGs) :- !,
|
||||
'$preprocess_stack'(Gs, NGs).
|
||||
'$beautify_hidden_goal'('$system_catch',_,prolog,ClNo,Gs,NGs) :- !,
|
||||
'$preprocess_stack'(Gs, NGs).
|
||||
'$beautify_hidden_goal'('$execute_command',_,prolog,ClNo,Gs,NGs) :- !,
|
||||
|
||||
Reference in New Issue
Block a user