415 lines
7.9 KiB
C++
415 lines
7.9 KiB
C++
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#define YAP_CPP_INTERFACE 1
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#include "yapi.hh"
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YAPAtomTerm::YAPAtomTerm(char *s) { // build string
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BACKUP_H();
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CACHE_REGS
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seq_tv_t inp, out;
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inp.val.c = s;
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inp.type = YAP_STRING_CHARS;
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out.type = YAP_STRING_ATOM;
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if (Yap_CVT_Text(&inp, &out PASS_REGS))
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t = MkAtomTerm(out.val.a);
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else t = 0L;
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RECOVER_H();
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}
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YAPAtomTerm::YAPAtomTerm(char *s, size_t len) { // build string
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BACKUP_H();
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CACHE_REGS
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seq_tv_t inp, out;
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inp.val.c = s;
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inp.type = YAP_STRING_CHARS;
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out.type = YAP_STRING_ATOM|YAP_STRING_NCHARS|YAP_STRING_TRUNC;
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out.sz = len;
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out.max = len;
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if (Yap_CVT_Text(&inp, &out PASS_REGS))
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t = MkAtomTerm(out.val.a);
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else t = 0L;
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RECOVER_H();
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}
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YAPAtomTerm::YAPAtomTerm(wchar_t *s): YAPTerm() { // build string
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BACKUP_H();
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CACHE_REGS
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seq_tv_t inp, out;
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inp.val.w = s;
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inp.type = YAP_STRING_WCHARS;
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out.type = YAP_STRING_ATOM;
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if (Yap_CVT_Text(&inp, &out PASS_REGS))
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t = MkAtomTerm(out.val.a);
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else t = 0L;
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RECOVER_H();
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}
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YAPAtomTerm::YAPAtomTerm(wchar_t *s, size_t len) : YAPTerm() { // build string
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BACKUP_H();
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CACHE_REGS
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seq_tv_t inp, out;
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inp.val.w = s;
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inp.type = YAP_STRING_WCHARS;
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out.type = YAP_STRING_ATOM|YAP_STRING_NCHARS|YAP_STRING_TRUNC;
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out.sz = len;
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out.max = len;
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if (Yap_CVT_Text(&inp, &out PASS_REGS))
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t = MkAtomTerm(out.val.a);
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else t = 0L;
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RECOVER_H();
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}
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YAPStringTerm::YAPStringTerm(char *s) { // build string
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BACKUP_H();
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CACHE_REGS
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seq_tv_t inp, out;
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inp.val.c = s;
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inp.type = YAP_STRING_CHARS;
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out.type = YAP_STRING_STRING;
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if (Yap_CVT_Text(&inp, &out PASS_REGS))
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t = out.val.t;
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else t = 0L;
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RECOVER_H();
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}
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YAPStringTerm::YAPStringTerm(char *s, size_t len) { // build string
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BACKUP_H();
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CACHE_REGS
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seq_tv_t inp, out;
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inp.val.c = s;
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inp.type = YAP_STRING_CHARS;
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out.type = YAP_STRING_STRING|YAP_STRING_NCHARS|YAP_STRING_TRUNC;
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out.sz = len;
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out.max = len;
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if (Yap_CVT_Text(&inp, &out PASS_REGS))
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t = out.val.t;
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else t = 0L;
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RECOVER_H();
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}
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YAPStringTerm::YAPStringTerm(wchar_t *s): YAPTerm() { // build string
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BACKUP_H();
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CACHE_REGS
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seq_tv_t inp, out;
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inp.val.w = s;
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inp.type = YAP_STRING_WCHARS;
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out.type = YAP_STRING_STRING;
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if (Yap_CVT_Text(&inp, &out PASS_REGS))
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t = out.val.t;
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else t = 0L;
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RECOVER_H();
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}
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YAPStringTerm::YAPStringTerm(wchar_t *s, size_t len) : YAPTerm() { // build string
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BACKUP_H();
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CACHE_REGS
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seq_tv_t inp, out;
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inp.val.w = s;
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inp.type = YAP_STRING_WCHARS;
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out.type = YAP_STRING_STRING|YAP_STRING_NCHARS|YAP_STRING_TRUNC;
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out.sz = len;
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out.max = len;
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if (Yap_CVT_Text(&inp, &out PASS_REGS))
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t = out.val.t;
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else t = 0L;
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RECOVER_H();
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}
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YAPApplTerm::YAPApplTerm(YAPFunctor f, YAPTerm ts[]) : YAPTerm() {
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UInt arity = ArityOfFunctor(f.f);
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t = Yap_MkApplTerm( f.f, arity, (Term *)ts);
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}
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YAPApplTerm::YAPApplTerm(YAPFunctor f) : YAPTerm() {
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UInt arity = ArityOfFunctor(f.f);
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t = Yap_MkNewApplTerm( f.f, arity);
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}
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YAPTerm YAPApplTerm::getArg(unsigned int arg) {
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return YAPTerm( ArgOfTerm(arg, t) );
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}
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YAPFunctor YAPApplTerm::getFunctor() {
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return YAPFunctor( FunctorOfTerm(t) );
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}
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YAPPairTerm::YAPPairTerm(YAPTerm th, YAPTerm tl) : YAPTerm() {
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CACHE_REGS
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t = MkPairTerm( th.t, tl.t);
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}
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YAPPairTerm::YAPPairTerm() : YAPTerm() {
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t = Yap_MkNewPairTerm( );
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}
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YAP_tag_t YAPTerm::tag() {
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if (IsVarTerm(t)) {
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CELL *pt = VarOfTerm(t);
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if (IsUnboundVar(pt)) {
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CACHE_REGS
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if (IsAttVar(pt))
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return YAP_TAG_ATT;
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return YAP_TAG_UNBOUND;
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}
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return YAP_TAG_REF;
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}
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if (IsPairTerm(t))
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return YAP_TAG_PAIR;
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if (IsAtomOrIntTerm(t)) {
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if (IsAtomTerm(t))
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return YAP_TAG_ATOM;
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return YAP_TAG_INT;
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} else {
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Functor f = FunctorOfTerm(t);
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if (IsExtensionFunctor(f)) {
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if (f == FunctorDBRef) {
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return YAP_TAG_DBREF;
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}
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if (f == FunctorLongInt) {
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return YAP_TAG_LONG_INT;
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}
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if (f == FunctorBigInt) {
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big_blob_type bt = (big_blob_type)RepAppl(t)[1];
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switch (bt) {
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case BIG_INT:
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return YAP_TAG_BIG_INT;
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case BIG_RATIONAL:
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return YAP_TAG_RATIONAL;
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default:
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return YAP_TAG_OPAQUE;
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}
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}
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}
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return YAP_TAG_APPL;
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}
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}
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YAPTerm YAPTerm::deepCopy() {
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Term tn;
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BACKUP_MACHINE_REGS();
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tn = Yap_CopyTerm(t);
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RECOVER_MACHINE_REGS();
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return new YAPTerm( tn );
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}
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bool YAPTerm::exactlyEqual(YAPTerm t1) {
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int out;
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BACKUP_MACHINE_REGS();
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out = Yap_eq(Deref(t), Deref(t1.t));
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RECOVER_MACHINE_REGS();
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return out;
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}
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bool YAPTerm::unify(YAPTerm t1) {
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int out;
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BACKUP_MACHINE_REGS();
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out = Yap_unify(Deref(t), Deref(t1.t));
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RECOVER_MACHINE_REGS();
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return out;
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}
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bool YAPTerm::unifiable(YAPTerm t1) {
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int out;
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BACKUP_MACHINE_REGS();
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out = Yap_Unifiable(Deref(t), Deref(t1.t));
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RECOVER_MACHINE_REGS();
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return out;
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}
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bool YAPTerm::variant(YAPTerm t1) {
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int out;
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BACKUP_MACHINE_REGS();
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out = Yap_Variant(Deref(t), Deref(t1.t));
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RECOVER_MACHINE_REGS();
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return out;
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}
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intptr_t YAPTerm::hash(size_t sz, size_t depth, bool variant) {
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Int out;
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BACKUP_MACHINE_REGS();
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out = Yap_TermHash(t, sz, depth, variant);
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RECOVER_MACHINE_REGS();
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return out;
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}
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char *YAPAtom::name(void) {
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if (IsWideAtom(a)) {
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// return an UTF-8 version
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size_t sz = 512;
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wchar_t * ptr = a->WStrOfAE;
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int ch = -1;
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char *s = new char[sz], *op = s;
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while (ch) {
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ch = *ptr++;
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utf8_put_char( op, ch );
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}
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sz = strlen(s)+1;
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char *os = new char[sz];
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memcpy(os, s, sz);
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delete s;
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return os;
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} else if (IsBlob(a)) {
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PL_blob_t *type = RepBlobProp(a->PropsOfAE)->blob_t;
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size_t sz = 512;
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if (type->write) {
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char *s = new char[sz];
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IOSTREAM *stream = Sopenmem(&s, &sz, "w");
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stream->encoding = ENC_UTF8;
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atom_t at = YAP_SWIAtomFromAtom(AbsAtom(a));
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type->write(stream, at, 0);
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Sclose(stream);
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popOutputContext();
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sz = strlen(s)+1;
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char *os = new char[sz];
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memcpy(os, s, sz);
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delete s;
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return os;
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} else {
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char *s = new char[sz];
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#if defined(__linux__) || defined(__APPLE__)
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snprintf(s, sz, "'%s'(%p)", AtomSWIStream->StrOfAE, a);
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#else
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snprintf(s, sz, "'%s'(0x%p)", AtomSWIStream->StrOfAE, a);
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#endif
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char *os = new char[sz];
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memcpy(os, s, sz);
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delete s;
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return os;
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}
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} else {
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return a->StrOfAE;
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}
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}
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void
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YAPQuery::initQuery( Term *t )
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{
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CACHE_REGS
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this->oq = (YAPQuery *)LOCAL_execution;
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LOCAL_execution = (struct open_query_struct *)this;
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this->q_open=1;
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this->q_state=0;
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this->q_flags = 0;
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this->q_g = t;
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}
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YAPQuery::YAPQuery(YAPFunctor f, YAPTerm mod, YAPTerm t[]): YAPPredicate(f, mod)
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{
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/* ignore flags for now */
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initQuery( (Term *)t );
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}
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YAPQuery::YAPQuery(YAPFunctor f, YAPTerm t[]): YAPPredicate(f)
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{
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/* ignore flags for now */
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initQuery( (Term *)t );
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}
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YAPQuery::YAPQuery(YAPPredicate p, YAPTerm t[]): YAPPredicate(p.ap)
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{
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initQuery( (Term *)t );
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}
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YAPQuery::YAPQuery(char *s): YAPPredicate(s, &this->q_g)
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{
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Term *t = this->q_g;
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initQuery( t );
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}
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int YAPQuery::next()
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{
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CACHE_REGS
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int result;
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if (this->q_open != 1) return 0;
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if (setjmp(((YAPQuery *)LOCAL_execution)->q_env))
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return 0;
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// don't forget, on success these guys must create slots
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if (this->q_state == 0) {
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result = YAP_EnterGoal((YAP_PredEntryPtr)this->ap, this->q_g, &this->q_h);
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} else {
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LOCAL_AllowRestart = this->q_open;
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result = YAP_RetryGoal(&this->q_h);
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}
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this->q_state = 1;
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if (result == 0) {
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YAP_LeaveGoal(FALSE, &this->q_h);
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this->q_open = 0;
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}
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return result;
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}
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void YAPQuery::cut()
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{
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CACHE_REGS
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if (this->q_open != 1 || this->q_state == 0) return;
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YAP_LeaveGoal(FALSE, &this->q_h);
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this->q_open = 0;
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LOCAL_execution = (struct open_query_struct *)this->oq;
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}
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void YAPQuery::close()
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{
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CACHE_REGS
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if (EX && !(this->q_flags & (PL_Q_CATCH_EXCEPTION))) {
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EX = NULL;
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}
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/* need to implement backtracking here */
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if (this->q_open != 1 || this->q_state == 0) {
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return;
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}
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YAP_LeaveGoal(FALSE, &this->q_h);
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this->q_open = 0;
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LOCAL_execution = (struct open_query_struct *)this->oq;
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}
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int YAPPredicate::call(YAPTerm t[])
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{
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YAPQuery q = YAPQuery(*this, t);
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int ret = q.next();
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q.cut();
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q.close();
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return ret;
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}
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YAPEngine::YAPEngine(YAPParams const& params)
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{ YAP_Init( (YAP_init_args *)¶ms.init_args ); }
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