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yap-6.3/CXX/yapi.cpp
Vítor Santos Costa b4bd6b4ba8 small fixes
2018-10-18 22:00:27 +01:00

1132 lines
27 KiB
C++

#include "inline-only.h"
#define _EXPORT_KERNEL 1
#include "yapi.hh"
extern "C" {
#if __ANDROID__
#include "android/log.h"
#endif
#if YAP_PYTHON
#include "Python.h"
#endif
#include "YapBlobs.h"
#include "YapInterface.h"
#include "iopreds.h"
#include "YapInit.h"
X_API char *Yap_TermToBuffer(Term t, int flags);
X_API void YAP_UserCPredicate(const char *, YAP_UserCPred, arity_t arity);
X_API void YAP_UserCPredicateWithArgs(const char *, YAP_UserCPred, arity_t,
YAP_Term);
X_API void YAP_UserBackCPredicate(const char *, YAP_UserCPred, YAP_UserCPred,
YAP_Arity, YAP_Arity);
#if YAP_PYTHON
X_API bool do_init_python(void);
#endif
}
static void YAPCatchError() {
if (LOCAL_CommittedError != nullptr &&
LOCAL_CommittedError->errorNo != YAP_NO_ERROR) {
// Yap_PopTermFromDB(info->errorTerm);
// throw throw YAPError( );
Term es[2];
es[0] = TermError;
es[1] = MkErrorTerm(LOCAL_CommittedError);
Functor f = Yap_MkFunctor(Yap_LookupAtom("print_message"), 2);
YAP_RunGoalOnce(Yap_MkApplTerm(f, 2, es));
// Yap_PopTermFromDB(info->errorTerm);
// throw throw YAPError( SOURCE(), );
} else if (LOCAL_ActiveError != nullptr &&
LOCAL_ActiveError->errorNo != YAP_NO_ERROR) {
// Yap_PopTermFromDB(info->errorTerm);
// throw throw YAPError( );
Term es[2];
es[0] = TermError;
es[1] = MkErrorTerm(LOCAL_ActiveError);
Functor f = Yap_MkFunctor(Yap_LookupAtom("print_message"), 2);
YAP_RunGoalOnce(Yap_MkApplTerm(f, 2, es));
// Yap_PopTermFromDB(info->errorTerm);
// throw throw YAPError( SOURCE(), );
}
}
YAPPredicate::YAPPredicate(Term &t, Term &tmod, CELL *&ts, const char *pname) {
Term t0 = t;
ap = nullptr;
restart:
if (IsVarTerm(t)) {
throw YAPError(SOURCE(), INSTANTIATION_ERROR, t0, pname);
} else if (IsAtomTerm(t)) {
ap = RepPredProp(Yap_GetPredPropByAtom(AtomOfTerm(t), tmod));
ts = nullptr;
} else if (IsIntegerTerm(t) && tmod == IDB_MODULE) {
ts = nullptr;
ap = Yap_FindLUIntKey(IntegerOfTerm(t));
} else if (IsPairTerm(t)) {
t = Yap_MkApplTerm(FunctorCsult, 1, &t);
goto restart;
} else if (IsApplTerm(t)) {
Functor fun = FunctorOfTerm(t);
if (IsExtensionFunctor(fun)) {
throw YAPError(SOURCE(), TYPE_ERROR_CALLABLE,
Yap_PredicateIndicator(t, tmod), pname);
}
if (fun == FunctorModule) {
tmod = ArgOfTerm(1, t);
if (IsVarTerm(tmod)) {
throw YAPError(SOURCE(), INSTANTIATION_ERROR, t0, pname);
}
if (!IsAtomTerm(tmod)) {
throw YAPError(SOURCE(), TYPE_ERROR_ATOM, t0, pname);
}
t = ArgOfTerm(2, t);
goto restart;
}
ap = RepPredProp(Yap_GetPredPropByFunc(fun, tmod));
ts = RepAppl(t) + 1;
} else {
throw YAPError(SOURCE(), TYPE_ERROR_CALLABLE, t0, pname);
}
}
Term YAPTerm::getArg(arity_t i) {
BACKUP_MACHINE_REGS();
Term tf = 0;
Term t0 = gt();
if (IsApplTerm(t0)) {
if (i > ArityOfFunctor(FunctorOfTerm(t0)))
throw YAPError(SOURCE(), DOMAIN_ERROR_OUT_OF_RANGE, t0, "t0.getArg()");
tf = (ArgOfTerm(i, t0));
} else if (IsPairTerm(t0)) {
if (i == 1)
tf = (HeadOfTerm(t0));
else if (i == 2)
tf = (TailOfTerm(t0));
else
throw YAPError(SOURCE(), DOMAIN_ERROR_OUT_OF_RANGE, t0, "t0.getArg()");
} else {
throw YAPError(SOURCE(), TYPE_ERROR_COMPOUND, t0, "t0.getArg()");
}
RECOVER_MACHINE_REGS();
return tf;
}
YAPAtomTerm::YAPAtomTerm(char s[]) { // build string
BACKUP_H();
CACHE_REGS
seq_tv_t inp, out;
inp.enc = LOCAL_encoding;
inp.val.c = s;
inp.type = YAP_STRING_CHARS;
out.type = YAP_STRING_ATOM;
if (Yap_CVT_Text(&inp, &out PASS_REGS))
mk(MkAtomTerm(out.val.a));
else
t = 0L;
RECOVER_H();
}
YAPAtomTerm::YAPAtomTerm(char *s, size_t len) { // build string
BACKUP_H();
CACHE_REGS
seq_tv_t inp, out;
inp.val.c = s;
inp.type = YAP_STRING_CHARS;
inp.enc = LOCAL_encoding;
out.type = YAP_STRING_ATOM | YAP_STRING_NCHARS | YAP_STRING_TRUNC;
out.max = len;
if (Yap_CVT_Text(&inp, &out PASS_REGS))
mk(MkAtomTerm(out.val.a));
else
t = 0L;
RECOVER_H();
}
YAPAtomTerm::YAPAtomTerm(wchar_t *s) : YAPTerm() { // build string
BACKUP_H();
CACHE_REGS
seq_tv_t inp, out;
inp.val.w = s;
inp.type = YAP_STRING_WCHARS;
out.type = YAP_STRING_ATOM;
if (Yap_CVT_Text(&inp, &out PASS_REGS))
mk(MkAtomTerm(out.val.a));
else
t = 0L;
RECOVER_H();
}
YAPAtomTerm::YAPAtomTerm(wchar_t *s, size_t len) : YAPTerm() { // build string
BACKUP_H();
CACHE_REGS
seq_tv_t inp, out;
inp.val.w = s;
inp.type = YAP_STRING_WCHARS;
out.type = YAP_STRING_ATOM | YAP_STRING_NCHARS | YAP_STRING_TRUNC;
out.max = len;
if (Yap_CVT_Text(&inp, &out PASS_REGS))
mk(MkAtomTerm(out.val.a));
else
t = 0L;
RECOVER_H();
}
YAPStringTerm::YAPStringTerm(char *s) { // build string
BACKUP_H();
CACHE_REGS
Term ts = MkStringTerm(s);
mk(ts);
RECOVER_H();
}
YAPStringTerm::YAPStringTerm(char *s, size_t len) { // build string
BACKUP_H();
CACHE_REGS
seq_tv_t inp, out;
inp.val.c = s;
inp.type = YAP_STRING_CHARS;
out.type = YAP_STRING_STRING | YAP_STRING_NCHARS | YAP_STRING_TRUNC;
out.max = len;
if (Yap_CVT_Text(&inp, &out PASS_REGS))
mk(out.val.t);
else
t = 0L;
RECOVER_H();
}
YAPStringTerm::YAPStringTerm(wchar_t *s) : YAPTerm() { // build string
BACKUP_H();
CACHE_REGS
seq_tv_t inp, out;
inp.val.w = s;
inp.type = YAP_STRING_WCHARS;
out.type = YAP_STRING_STRING;
if (Yap_CVT_Text(&inp, &out PASS_REGS))
mk(out.val.t);
else
t = 0L;
RECOVER_H();
}
YAPStringTerm::YAPStringTerm(wchar_t *s, size_t len)
: YAPTerm() { // build string
BACKUP_H();
CACHE_REGS
seq_tv_t inp, out;
inp.val.w = s;
inp.type = YAP_STRING_WCHARS;
out.type = YAP_STRING_STRING | YAP_STRING_NCHARS | YAP_STRING_TRUNC;
out.max = len;
if (Yap_CVT_Text(&inp, &out PASS_REGS))
mk(out.val.t);
else
t = 0L;
RECOVER_H();
}
YAPApplTerm::YAPApplTerm(YAPFunctor f, YAPTerm ts[]) {
BACKUP_H();
arity_t arity = ArityOfFunctor(f.f);
Term o = Yap_MkNewApplTerm(f.f, arity);
Term *tt = RepAppl(o) + 1;
for (arity_t i = 0; i < arity; i++)
tt[i] = ts[i].term();
mk(o);
RECOVER_H();
}
YAPApplTerm::YAPApplTerm(const std::string f, std::vector<Term> ts) {
BACKUP_H();
arity_t arity = ts.size();
Functor ff = Yap_MkFunctor(Yap_LookupAtom(f.c_str()), arity);
Term o = Yap_MkNewApplTerm(ff, arity);
Term *tt = RepAppl(o) + 1;
for (arity_t i = 0; i < arity; i++)
tt[i] = ts[i];
mk(o);
RECOVER_H();
}
YAPApplTerm::YAPApplTerm(const std::string f, std::vector<YAPTerm> ts) {
BACKUP_H();
arity_t arity = ts.size();
Functor ff = Yap_MkFunctor(Yap_LookupAtom(f.c_str()), arity);
Term o = Yap_MkNewApplTerm(ff, arity);
Term *tt = RepAppl(o) + 1;
for (arity_t i = 0; i < arity; i++)
tt[i] = ts[i].term();
mk(o);
RECOVER_H();
}
YAPApplTerm::YAPApplTerm(const std::string f, YAPTerm a1) {
BACKUP_H();
arity_t arity = 1;
Functor ff = Yap_MkFunctor(Yap_LookupAtom(f.c_str()), arity);
Term o = Yap_MkNewApplTerm(ff, arity);
Term *tt = RepAppl(o) + 1;
tt[0] = a1.term();
mk(o);
RECOVER_H();
}
YAPApplTerm::YAPApplTerm(const std::string f, YAPTerm a1, YAPTerm a2) {
BACKUP_H();
arity_t arity = 2;
Functor ff = Yap_MkFunctor(Yap_LookupAtom(f.c_str()), arity);
Term o = Yap_MkNewApplTerm(ff, arity);
Term *tt = RepAppl(o) + 1;
tt[0] = a1.term();
tt[1] = a2.term();
mk(o);
RECOVER_H();
}
YAPApplTerm::YAPApplTerm(const std::string f, YAPTerm a1, YAPTerm a2, YAPTerm a3) {
BACKUP_H();
arity_t arity = 3;
Functor ff = Yap_MkFunctor(Yap_LookupAtom(f.c_str()), arity);
Term o = Yap_MkNewApplTerm(ff, arity);
Term *tt = RepAppl(o) + 1;
tt[0] = a1.term();
tt[2] = a2.term();
tt[3] = a3.term();
mk(o);
RECOVER_H();
}
YAPApplTerm::YAPApplTerm(const std::string f, YAPTerm a1, YAPTerm a2, YAPTerm a3, YAPTerm a4) {
BACKUP_H();
arity_t arity = 4;
Functor ff = Yap_MkFunctor(Yap_LookupAtom(f.c_str()), arity);
Term o = Yap_MkNewApplTerm(ff, arity);
Term *tt = RepAppl(o) + 1;
tt[0] = a1.term();
tt[2] = a2.term();
tt[3] = a3.term();
tt[4] = a4.term();
mk(o);
RECOVER_H();
}
YAPApplTerm::YAPApplTerm(YAPFunctor f) : YAPTerm() {
BACKUP_H();
arity_t arity = ArityOfFunctor(f.f);
mk(Yap_MkNewApplTerm(f.f, arity));
RECOVER_H();
}
Term &YAPTerm::operator[](arity_t i) {
BACKUP_MACHINE_REGS();
Term t0 = gt();
Term *tf = nullptr;
if (IsApplTerm(t0)) {
// Functor f = FunctorOfTerm(t0);
// if (IsExtensionFunctor(f))
// return 0;
tf = RepAppl(t0) + (i + 1);
} else if (IsPairTerm(t0)) {
if (i == 0)
tf = RepPair(t0);
else if (i == 1)
tf = RepPair(t0) + 1;
RECOVER_MACHINE_REGS();
} else {
throw YAPError(SOURCE(), TYPE_ERROR_COMPOUND, t0, "");
}
RECOVER_MACHINE_REGS();
return *tf;
}
Term &YAPListTerm::operator[](arity_t i) {
BACKUP_MACHINE_REGS();
Term t0 = gt();
Term tf = 0;
while (IsPairTerm(t0)) {
if (i == 0) {
tf = HeadOfTerm(t0);
break;
} else {
t0 = TailOfTerm(t0);
i--;
}
}
RECOVER_MACHINE_REGS();
return RepPair(tf)[i];
}
YAPPairTerm::YAPPairTerm(YAPTerm th, YAPTerm tl) {
CACHE_REGS
BACKUP_H();
mk(MkPairTerm(th.term(), tl.term()));
RECOVER_H();
}
YAPPairTerm::YAPPairTerm() {
BACKUP_H();
mk(TermNil);
RECOVER_H();
}
std::vector<Term> YAPPairTerm::listToArray() {
Term *tailp;
Term t1 = gt();
Int l = Yap_SkipList(&t1, &tailp);
if (l < 0) {
throw YAPError(SOURCE(), TYPE_ERROR_LIST, (t), nullptr);
}
std::vector<Term> o = *new std::vector<Term>(l);
int i = 0;
Term t = gt();
while (t != TermNil) {
o[i++] = HeadOfTerm(t);
t = TailOfTerm(t);
}
return o;
}
YAP_tag_t YAPTerm::tag() {
Term tt = gt();
if (IsVarTerm(tt)) {
CELL *pt = VarOfTerm(tt);
if (IsUnboundVar(pt)) {
CACHE_REGS
if (IsAttVar(pt))
return YAP_TAG_ATT;
return YAP_TAG_UNBOUND;
}
return YAP_TAG_REF;
}
if (IsPairTerm(tt))
return YAP_TAG_PAIR;
if (IsAtomOrIntTerm(tt)) {
if (IsAtomTerm(tt))
return YAP_TAG_ATOM;
return YAP_TAG_INT;
} else {
Functor f = FunctorOfTerm(tt);
if (IsExtensionFunctor(f)) {
if (f == FunctorDBRef) {
return YAP_TAG_DBREF;
}
if (f == FunctorLongInt) {
return YAP_TAG_LONG_INT;
}
if (f == FunctorBigInt) {
big_blob_type bt = (big_blob_type)RepAppl(tt)[1];
switch (bt) {
case BIG_INT:
return YAP_TAG_BIG_INT;
case BIG_RATIONAL:
return YAP_TAG_RATIONAL;
default:
return YAP_TAG_OPAQUE;
}
}
}
return YAP_TAG_APPL;
}
}
Term YAPTerm::deepCopy() {
yhandle_t tn;
BACKUP_MACHINE_REGS();
tn = Yap_CopyTerm(gt());
RECOVER_MACHINE_REGS();
return (tn);
}
Term YAPListTerm::cdr() {
Term to = gt();
if (IsPairTerm(to))
return (TailOfTerm(to));
else if (to == TermNil)
return TermNil;
/* error */
throw YAPError(SOURCE(), TYPE_ERROR_LIST, to, "");
}
Term YAPListTerm::dup() {
yhandle_t tn;
BACKUP_MACHINE_REGS();
tn = Yap_CopyTerm(gt());
RECOVER_MACHINE_REGS();
return tn;
}
intptr_t YAPTerm::numberVars(intptr_t i0, bool skip_singletons) {
BACKUP_MACHINE_REGS();
intptr_t i = Yap_NumberVars(gt(), i0, skip_singletons);
RECOVER_MACHINE_REGS();
return i;
}
const char *YAPQuery::text() { return YAPTerm(goal).text(); }
YAPIntegerTerm::YAPIntegerTerm(intptr_t i) {
CACHE_REGS Term tn = MkIntegerTerm(i);
mk(tn);
}
/*
YAPTerm *YAPTerm::vars()
{
BACKUP_MACHINE_REGS();
CACHE_REGS
YAPPairTerm lv = YAPPairTerm(Yap_TermVariables(gt(), 0 PASS_REGS));
RECOVER_MACHINE_REGS();
return lv;
}
*/
YAPTerm::YAPTerm(void *ptr) {
CACHE_REGS
mk(MkIntegerTerm((Int)ptr));
}
Term YAPListTerm::car() {
Term to = gt();
if (IsPairTerm(to))
return (HeadOfTerm(to));
else {
throw YAPError(SOURCE(), TYPE_ERROR_LIST, to, "");
return TermUnique;
}
}
YAPListTerm::YAPListTerm(YAPTerm ts[], arity_t n) {
CACHE_REGS
BACKUP_H();
if (n == 0)
t = TermNil;
while (HR + n * 2 > ASP - 1024) {
RECOVER_H();
if (!Yap_dogc(0, NULL PASS_REGS)) {
t = TermNil;
}
BACKUP_H();
}
t = AbsPair(HR);
for (arity_t i = 0; i < n; i++) {
HR[2 * i] = ts[i].gt();
HR[2 * i + 1] = AbsPair(HR + (2 * i + 2));
}
}
const char *YAPAtom::getName(void) { return Yap_AtomToUTF8Text(a); }
void YAPQuery::openQuery() {
CACHE_REGS
if (ap == NULL || ap->OpcodeOfPred == UNDEF_OPCODE) {
ap = rewriteUndefQuery();
}
setNext();
}
bool YAPEngine::call(YAPPredicate ap, YAPTerm ts[]) {
CACHE_REGS
if (ap.ap == NULL)
return false;
BACKUP_MACHINE_REGS();
arity_t arity = ap.getArity();
bool result;
YAP_dogoalinfo q;
q.CurSlot = Yap_StartSlots();
q.p = P;
q.cp = CP;
for (arity_t i = 0; i < arity; i++)
XREGS[i + 1] = ts[i].term();
// allow Prolog style exceotion handling
// don't forget, on success these bindings will still be there);
result = YAP_LeaveGoal(true, &q);
YAPCatchError();
Yap_CloseHandles(q.CurSlot);
pop_text_stack(q.lvl + 1);
RECOVER_MACHINE_REGS();
return result;
}
bool YAPEngine::mgoal(Term t, Term tmod, bool release) {
#if YAP_PYTHON
// std::cerr << "mgoal(in) " << YAPTerm(tmod).text() << ":" << YAPTerm(t).text() << "\n";
// PyThreadState *_save;
// std::cerr << "mgoal " << YAPTerm(t).text() << "\n";
// _save = PyEval_SaveThread();
#endif
CACHE_REGS
BACKUP_MACHINE_REGS();
Term *ts = nullptr;
q.CurSlot = Yap_StartSlots();
q.p = P;
q.cp = CP;
PredEntry *ap = nullptr;
if (IsStringTerm(tmod))
tmod = MkAtomTerm(Yap_LookupAtom(StringOfTerm(tmod)));
YAPPredicate *p = new YAPPredicate(t, tmod, ts, "C++");
if (p == nullptr || (ap = p->ap) == nullptr ||
ap->OpcodeOfPred == UNDEF_OPCODE) {
ap = rewriteUndefEngineQuery(ap, t, tmod);
}
if (IsApplTerm(t))
ts = RepAppl(t) + 1;
else if (IsPairTerm(t))
ts = RepPair(t);
/* legal ap */
arity_t arity = ap->ArityOfPE;
for (arity_t i = 0; i < arity; i++) {
XREGS[i + 1] = ts[i];
}
ts = nullptr;
bool result;
// allow Prolog style exception handling
// don't forget, on success these guys may create slots
//__android_log_print(ANDROID_LOG_INFO, "YAPDroid", "exec ");
result = (bool)YAP_EnterGoal(ap, nullptr, &q);
// std::cerr << "mgoal " << YAPTerm(tmod).text() << ":" << YAPTerm(t).text() << "\n";
YAP_LeaveGoal(result && !release, &q);
// PyEval_RestoreThread(_save);
RECOVER_MACHINE_REGS();
return result;
}
/**
* called when a query must be terminated and its state fully recovered,
* @type {[type]}
*/
void YAPEngine::release() {
BACKUP_MACHINE_REGS();
YAP_LeaveGoal(FALSE, &q);
RECOVER_MACHINE_REGS();
}
Term YAPEngine::fun(Term t) {
CACHE_REGS
BACKUP_MACHINE_REGS();
Term tmod = Yap_CurrentModule(), *ts = nullptr;
PredEntry *ap;
arity_t arity;
Functor f;
Atom name;
if (IsApplTerm(t)) {
ts = RepAppl(t) + 1;
f = (Functor)ts[-1];
name = NameOfFunctor(f);
arity = ArityOfFunctor(f);
for (arity_t i = 0; i < arity; i++)
XREGS[i + 1] = ts[i];
} else if (IsAtomTerm(t)) {
name = AtomOfTerm(t);
f = nullptr;
arity = 0;
} else if (IsPairTerm(t)) {
XREGS[1] = ts[0];
XREGS[2] = ts[1];
arity = 2;
name = AtomDot;
f = FunctorDot;
} else {
throw YAPError(SOURCE(), TYPE_ERROR_CALLABLE, t, 0);
return 0L;
}
Term ot = XREGS[arity + 1] = MkVarTerm();
yhandle_t h = Yap_InitHandle(ot);
arity++;
HR += arity;
f = Yap_MkFunctor(name, arity);
ap = (PredEntry *)(PredPropByFunc(f, tmod));
if (ap == nullptr || ap->OpcodeOfPred == UNDEF_OPCODE) {
Term g = (Yap_MkApplTerm(f, arity, ts));
ap = rewriteUndefEngineQuery(ap, g, (ap->ModuleOfPred));
}
q.CurSlot = Yap_StartSlots();
q.p = P;
q.cp = CP;
// make sure this is safe
// allow Prolog style exception handling
//__android_log_print(ANDROID_LOG_INFO, "YAPDroid", "exec ");
bool result = (bool)YAP_EnterGoal(ap, nullptr, &q);
if (result)
ot = Yap_GetFromHandle(h);
else
ot = TermNone;
YAPCatchError();
{
YAP_LeaveGoal(result, &q);
// PyEval_RestoreThread(_save);
RECOVER_MACHINE_REGS();
return ot;
}
}
YAPQuery::YAPQuery(YAPFunctor f, YAPTerm mod, YAPTerm ts[])
: YAPPredicate(f, mod) {
/* ignore flags for now */
BACKUP_MACHINE_REGS();
Term goal;
if (ts) {
goal = YAPApplTerm(f, ts).term();
nts = RepAppl(goal) + 1;
size_t arity = f.arity();
for (arity_t i = 0; i < arity; i++)
XREGS[i + 1] = nts[i];
} else {
goal = MkVarTerm();
}
openQuery();
names = YAPPairTerm(TermNil);
RECOVER_MACHINE_REGS();
}
#if 0
YAPQuery::YAPQuery(YAPFunctor f, YAPTerm ts[]) : YAPPredicate(f) {
/* ignore flags for now */
BACKUP_MACHINE_REGS();
if (ts) {
goal = YAPApplTerm(f, nts);
} else {
goal = YAPVarTerm();
nts = nullptr;
}
names = YAPPairTerm( TermNil );
openQuery(term(), nts);
RECOVER_MACHINE_REGS();
}
#endif
YAPQuery::YAPQuery(YAPPredicate p, YAPTerm ts[]) : YAPPredicate(p.ap) {
BACKUP_MACHINE_REGS();
try {
arity_t arity = p.ap->ArityOfPE;
if (arity) {
goal = YAPApplTerm(YAPFunctor(p.ap->FunctorOfPred), ts).term();
for (arity_t i = 0; i < arity; i++)
XREGS[i + 1] = ts[i].term();
openQuery();
} else {
goal = MkAtomTerm((Atom)(p.ap->FunctorOfPred));
openQuery();
}
names = TermNil;
} catch (...) {
}
RECOVER_MACHINE_REGS();
}
bool YAPQuery::next() {
CACHE_REGS
bool result = false;
// std::cerr << "next " << YAPTerm(goal).text() << "\n";
sigjmp_buf buf, *oldp = LOCAL_RestartEnv;
e = nullptr;
BACKUP_MACHINE_REGS();
if (!q_open)
return false;
LOCAL_RestartEnv = &buf;
// don't forget, on success these guys may create slots
__android_log_print(ANDROID_LOG_INFO, "YAPDroid", "exec ");
if (q_state == 0) {
// Yap_do_low_level_trace = 1;
result = (bool)YAP_EnterGoal(ap, nullptr, &q_h);
} else {
LOCAL_AllowRestart = q_open;
result = (bool)YAP_RetryGoal(&q_h);
}
q_state = 1;
__android_log_print(ANDROID_LOG_INFO, "YAPDroid", "out %d", result);
if (!result) {
YAP_LeaveGoal(result, &q_h);
q_open = false;
}
YAPCatchError();
RECOVER_MACHINE_REGS();
LOCAL_RestartEnv = oldp;
return result;
}
PredEntry *YAPQuery::rewriteUndefQuery() {
ARG1 = goal = Yap_SaveTerm(Yap_MkApplTerm(FunctorCall, 1, &goal));
return ap = PredCall;
}
PredEntry *YAPEngine::rewriteUndefEngineQuery(PredEntry *a, Term &tgoal,
Term mod) {
tgoal = Yap_MkApplTerm(FunctorCall, 1, &tgoal);
return PredCall;
// return YAPApplTerm(FunctorUndefinedQuery, ts);
}
void YAPQuery::cut() {
CACHE_REGS
BACKUP_MACHINE_REGS();
if (!q_open || q_state == 0)
return;
YAP_LeaveGoal(true, &q_h);
q_open = false;
// LOCAL_execution = this;
RECOVER_MACHINE_REGS();
}
bool YAPQuery::deterministic() {
CACHE_REGS
BACKUP_MACHINE_REGS();
if (!q_open || q_state == 0)
return false;
choiceptr myB = (choiceptr)(LCL0 - q_h.b);
return (B >= myB);
RECOVER_MACHINE_REGS();
}
YAPTerm YAPQuery::getTerm(yhandle_t t) { return YAPTerm(t); }
void YAPQuery::close() {
CACHE_REGS
RECOVER_MACHINE_REGS();
Yap_ResetException(worker_id);
/* need to implement backtracking here */
if (q_open != true || q_state == 0) {
RECOVER_MACHINE_REGS();
return;
}
YAP_LeaveGoal(false, &q_h);
q_open = 0;
Yap_CloseHandles(q_handles);
// LOCAL_execution = this;
RECOVER_MACHINE_REGS();
}
#if __ANDROID__
#include <jni.h>
#include <string.h>
JNIEnv *Yap_jenv;
extern JNIEXPORT jint JNICALL JNI_MySQLOnLoad(JavaVM *vm, void *reserved);
JNIEXPORT jint JNICALL JNI_MySQLOnLoad(JavaVM *vm, void *reserved) {
JNIEnv *env;
if (vm->GetEnv(reinterpret_cast<void **>(&env), JNI_VERSION_1_6) != JNI_OK) {
return -1;
}
Yap_jenv = env;
return JNI_VERSION_1_6;
}
char *Yap_AndroidBufp;
static size_t Yap_AndroidMax, Yap_AndroidSz;
extern void (*Yap_DisplayWithJava)(int c);
static YAPCallback *cb = new YAPCallback();
void Yap_displayWithJava(int c) {
char *ptr = Yap_AndroidBufp;
if (!ptr)
ptr = Yap_AndroidBufp = (char *)malloc(Yap_AndroidSz);
ptr[Yap_AndroidSz++] = c;
if (Yap_AndroidMax - 1 == Yap_AndroidSz) {
if (Yap_AndroidMax < 32 * 1024) {
Yap_AndroidMax *= 2;
} else {
Yap_AndroidMax += 32 * 1024;
}
Yap_AndroidBufp = (char *)realloc(ptr, Yap_AndroidMax);
}
Yap_AndroidBufp[Yap_AndroidSz] = '\0';
if (c == '\n') {
Yap_AndroidBufp[Yap_AndroidSz] = '\0';
cb->run(Yap_AndroidBufp);
Yap_AndroidSz = 0;
}
}
#endif
void YAPEngine::doInit(YAP_file_type_t BootMode, YAPEngineArgs *engineArgs) {
if (BootMode == YAP_FOUND_BOOT_ERROR) {
std::cerr << "Exception received by " << __func__ << "( "
<< "while booting"
<< ").\n Forwarded...\n\n";
return;
}
YAP_Init(engineArgs);
/* Begin preprocessor code */
/* live */
// yerror = throw YAPError( SOURCE(), );
#if YAP_PYTHON
do_init_python();
#endif
// std::string s = "initialize_prolog";
// YAPPredicate p = YAPPredicate(MkAtomTerm(Yap_LookupAtom(s.c_str())));
// YAPQuery initq = YAPQuery(YAPPredicate(p), nullptr);
// if (initq.next()) {
// initq.cut();
// }
CurrentModule = TermUser;
}
YAPEngine::YAPEngine(int argc, char *argv[],
YAPCallback *cb)
: _callback(0) { // a single engine can be active
YAP_file_type_t BootMode;
engine_args = new YAPEngineArgs();
BootMode = YAP_parse_yap_arguments(argc, argv, engine_args);
// delYAPCallback()b
// if (cb)
// setYAPCallback(cb);
doInit(BootMode, engine_args);
}
YAPPredicate::YAPPredicate(YAPAtom at) {
CACHE_REGS
ap = RepPredProp(PredPropByAtom(at.a, Yap_CurrentModule()));
}
YAPPredicate::YAPPredicate(YAPAtom at, uintptr_t arity) {
CACHE_REGS
if (arity) {
Functor f = Yap_MkFunctor(at.a, arity);
ap = RepPredProp(PredPropByFunc(f, Yap_CurrentModule()));
} else {
ap = RepPredProp(PredPropByAtom(at.a, Yap_CurrentModule()));
}
}
/// auxiliary routine to find a predicate in the current module.
PredEntry *YAPPredicate::getPred(Term &t, Term &m, CELL *&out) {
CACHE_REGS
t = Yap_StripModule(t, &m);
if (IsVarTerm(t) || IsNumTerm(t)) {
if (IsVarTerm(t))
throw YAPError(SOURCE(), INSTANTIATION_ERROR, t, 0);
else if (IsNumTerm(t))
throw YAPError(SOURCE(), TYPE_ERROR_CALLABLE, t, 0);
}
if (IsAtomTerm(t)) {
ap = RepPredProp(PredPropByAtom(AtomOfTerm(t), m));
return ap;
} else if (IsPairTerm(t)) {
Term ts[2], *s = (out ? out : ts);
Functor FunctorConsult = Yap_MkFunctor(Yap_LookupAtom("consult"), 1);
s[1] = t;
s[0] = m;
t = Yap_MkApplTerm(FunctorModule, 2, s);
t = Yap_MkApplTerm(FunctorConsult, 1, &t);
if (!out)
out = RepAppl(t) + 1;
}
Functor f = FunctorOfTerm(t);
if (IsExtensionFunctor(f)) {
throw YAPError(SOURCE(), TYPE_ERROR_CALLABLE, t, 0);
} else {
ap = RepPredProp(PredPropByFunc(f, m));
if (out)
memmove(out, (const CELL *)RepAppl(t) + 1, ap->ArityOfPE * sizeof(CELL));
else
out = RepAppl(t) + 1;
}
return ap;
}
bool YAPPrologPredicate::assertClause(YAPTerm cl, bool last, YAPTerm source) {
CACHE_REGS
RECOVER_MACHINE_REGS();
Term tt = cl.gt();
Term sourcet;
Term ntt = cl.gt();
if (source.initialized())
sourcet = source.gt();
else
sourcet = TermZERO;
yamop *codeaddr =
Yap_cclause(tt, ap->ArityOfPE, Yap_CurrentModule(),
sourcet); /* vsc: give the number of arguments
to cclause in case there is overflow */
if (LOCAL_ErrorMessage) {
RECOVER_MACHINE_REGS();
return false;
}
Term *tref = &ntt;
if (Yap_addclause(ntt, codeaddr, (last ? TermAssertz : TermAsserta),
Yap_CurrentModule(), tref)) {
RECOVER_MACHINE_REGS();
}
return tref;
}
bool YAPPrologPredicate::assertFact(YAPTerm *cl, bool last) {
CACHE_REGS
arity_t i;
RECOVER_MACHINE_REGS();
Term tt = AbsAppl(HR);
*HR++ = (CELL)(ap->FunctorOfPred);
for (i = 0; i < ap->ArityOfPE; i++, cl++)
*HR++ = cl->gt();
yamop *codeaddr = Yap_cclause(tt, ap->ArityOfPE, Yap_CurrentModule(),
tt); /* vsc: give the number of arguments
to cclause in case there is overflow */
if (LOCAL_ErrorMessage) {
RECOVER_MACHINE_REGS();
return false;
}
Term *tref = &tt;
if (Yap_addclause(tt, codeaddr, (last ? TermAssertz : TermAsserta),
Yap_CurrentModule(), tref)) {
RECOVER_MACHINE_REGS();
}
return tref;
}
void *YAPPrologPredicate::retractClause(YAPTerm skeleton, bool all) {
return 0;
}
std::string YAPError::text() {
return "Error";
#if 0
std::stringstream s;
s << "";
if (info->errorNo == YAP_NO_ERROR)
return 0;
if (info->errorFunction) {
s += info->errorFile;
s += ":";
sprintf(buf, "%ld", (long int)info->errorLine);
s += buf;
s += ":0 in C-code";
}
return s;
if (info->prologPredLine) {
s += "\n";
s += info->prologPredFile;
s += ":";
s << info->prologPredLine;
// YAPIntegerTerm(info->prologPredLine).text();
s += ":0 ";
s += info->prologPredModule;
s += ":";
s += (info->prologPredName);
s += "/";
s << info->prologPredArity;
}
s += " error ";
if (info->classAsText == nullptr)
info->classAsText = Yap_errorClassName(info->errorClass);
if (info->classAsText != nullptr)
s += info->classAsText;
s += ".";
if (info->errorAsText == nullptr)
info->errorAsText = Yap_errorName(info->errorNo);
if (info->errorAsText != nullptr)
s += info->errorAsText;
s += ".\n";
// printf("%s\n", s.c_str());
return s.c_str();
#endif
}
void YAPEngine::reSet() {
/* ignore flags for now */
if (B && B->cp_b && B->cp_ap != NOCODE)
YAP_LeaveGoal(false, &q);
LOCAL_ActiveError->errorNo = YAP_NO_ERROR;
if (LOCAL_CommittedError) {
LOCAL_CommittedError->errorNo = YAP_NO_ERROR;
free(LOCAL_CommittedError);
LOCAL_CommittedError = NULL;
}
}
Term YAPEngine::top_level(std::string s) {
/// parse string s and make term with var names
/// available.
Term tp;
ARG1 = YAP_ReadBuffer(s.data(), &tp);
ARG2 = tp;
ARG3 = MkVarTerm();
if (ARG1 == 0)
throw YAPError(SOURCE(), SYNTAX_ERROR, ARG1, "in input query");
YAPPredicate p = YAPPredicate(YAP_TopGoal());
YAPQuery *Q = new YAPQuery(p, 0);
Term ts[2];
ts[0] = MkAddressTerm(Q);
if (Q->next()) {
ts[1] = ARG3;
} else {
ts[1] = TermNil;
}
return YAP_MkApplTerm(YAP_MkFunctor(YAP_LookupAtom("t"), 2), 2, ts);
}
Term YAPEngine::next_answer(YAPQuery *&Q) {
/// parse string s and make term with var names
/// available.
Term ts[2];
ts[0] = MkAddressTerm(Q);
if (Q->next()) {
ts[1] = ARG3;
} else {
ts[1] = TermNil;
}
return YAP_MkApplTerm(YAP_MkFunctor(YAP_LookupAtom("t"), 2), 2, ts);
}