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yap-6.3/CXX/yapi.cpp
Vitor Santos Costa 81909565bc debugging msh
2015-04-15 17:02:02 +01:00

755 lines
17 KiB
C++

#define YAP_CPP_INTERFACE 1
#include "yapi.hh"
#include "SWI-Stream.h"
YAPAtomTerm::YAPAtomTerm(char *s) { // build string
BACKUP_H();
CACHE_REGS
seq_tv_t inp, out;
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;
out.type = YAP_STRING_ATOM|YAP_STRING_NCHARS|YAP_STRING_TRUNC;
out.sz = len;
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.sz = len;
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
seq_tv_t inp, out;
inp.val.c = s;
inp.type = YAP_STRING_CHARS;
out.type = YAP_STRING_STRING;
if (Yap_CVT_Text(&inp, &out PASS_REGS))
mk ( out.val.t );
else t = 0L;
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.sz = len;
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.sz = len;
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[]) : YAPTerm() {
BACKUP_H();
UInt arity = ArityOfFunctor(f.f);
mk ( Yap_MkApplTerm( f.f, arity, (Term *)ts) );
RECOVER_H();
}
YAPApplTerm::YAPApplTerm(YAPFunctor f) : YAPTerm() {
BACKUP_H();
UInt arity = ArityOfFunctor(f.f);
mk ( Yap_MkNewApplTerm( f.f, arity) );
RECOVER_H();
}
YAPTerm YAPApplTerm::getArg(int arg) {
BACKUP_H();
YAPTerm to = YAPTerm( ArgOfTerm(arg, gt() ) );
RECOVER_H();
return to;
}
YAPFunctor YAPApplTerm::getFunctor() {
return YAPFunctor( FunctorOfTerm( gt( )) );
}
YAPPairTerm::YAPPairTerm(YAPTerm th, YAPTerm tl) : YAPTerm() {
CACHE_REGS
BACKUP_H();
mk ( MkPairTerm( th.term(), tl.term() ) );
RECOVER_H();
}
YAPPairTerm::YAPPairTerm() : YAPTerm() {
BACKUP_H();
t = Yap_MkNewPairTerm( );
RECOVER_H();
}
void YAPTerm::mk(Term t0) { CACHE_REGS t = Yap_InitSlot( t0 ); }
Term YAPTerm::gt() { CACHE_REGS return Yap_GetFromSlot( t ); }
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;
}
}
YAPTerm YAPTerm::deepCopy() {
Term tn;
BACKUP_MACHINE_REGS();
tn = Yap_CopyTerm( gt() );
RECOVER_MACHINE_REGS();
return new YAPTerm( tn );
}
bool YAPTerm::exactlyEqual(YAPTerm t1) {
int out;
BACKUP_MACHINE_REGS();
out = Yap_eq(gt(), t1.term());
RECOVER_MACHINE_REGS();
return out;
}
bool YAPTerm::unify(YAPTerm t1) {
int out;
BACKUP_MACHINE_REGS();
out = Yap_unify(gt(), t1.term());
RECOVER_MACHINE_REGS();
return out;
}
bool YAPTerm::unifiable(YAPTerm t1) {
int out;
BACKUP_MACHINE_REGS();
out = Yap_Unifiable(gt(), t1.term());
RECOVER_MACHINE_REGS();
return out;
}
bool YAPTerm::variant(YAPTerm t1) {
int out;
BACKUP_MACHINE_REGS();
out = Yap_Variant(gt(), t1.term());
RECOVER_MACHINE_REGS();
return out;
}
intptr_t YAPTerm::hashTerm(size_t sz, size_t depth, bool variant) {
intptr_t out;
BACKUP_MACHINE_REGS();
out = Yap_TermHash(gt(), sz, depth, variant) ;
RECOVER_MACHINE_REGS();
return out;
}
const char *YAPTerm::text() {
size_t sze = 4096, length;
char *os;
int enc;
BACKUP_MACHINE_REGS();
if (!(os = Yap_HandleToString(t, sze, &length, &enc, 0))) {
RECOVER_MACHINE_REGS();
return (char *)NULL;
}
RECOVER_MACHINE_REGS();
return os;
}
const char *YAPQuery::text() {
return 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 ) );}
YAPTerm::YAPTerm(intptr_t i) { CACHE_REGS Term tn = MkIntegerTerm( i ); mk( tn ); }
YAPTerm YAPListTerm::car()
{
Term to = gt();
{ LOG( "to=%lx", to) ; }
if (IsPairTerm(to))
return YAPTerm(HeadOfTerm(to));
else
throw YAPError::YAP_DOMAIN_ERROR;
}
YAPVarTerm::YAPVarTerm() { CACHE_REGS mk( MkVarTerm( ) ); }
char *YAPAtom::getName(void) {
if (IsWideAtom(a)) {
// return an UTF-8 version
size_t sz = 512;
wchar_t * ptr = a->WStrOfAE;
int ch = -1;
char *s = new char[sz], *op = s;
while (ch) {
ch = *ptr++;
utf8_put_char( op, ch );
}
sz = strlen(s)+1;
char *os = new char[sz];
memcpy(os, s, sz);
delete[] s;
return os;
} else if (IsBlob(a)) {
PL_blob_t *type = RepBlobProp(a->PropsOfAE)->blob_t;
size_t sz = 512;
if (type->write) {
char *s = new char[sz];
IOSTREAM *stream = Sopenmem(&s, &sz, "w");
stream->encoding = ENC_UTF8;
atom_t at = YAP_SWIAtomFromAtom(AbsAtom(a));
type->write(stream, at, 0);
Sclose(stream);
popOutputContext();
sz = strlen(s)+1;
char *os = new char[sz];
memcpy(os, s, sz);
delete s;
return os;
} else {
char *s = new char[sz];
#if defined(__linux__) || defined(__APPLE__)
snprintf(s, sz, "'%s'(%p)", AtomSWIStream->StrOfAE, a);
#else
snprintf(s, sz, "'%s'(0x%p)", AtomSWIStream->StrOfAE, a);
#endif
char *os = new char[sz];
memcpy(os, s, sz);
delete[] s;
return os;
}
} else {
return a->StrOfAE;
}
}
void YAPQuery::initOpenQ() {
CACHE_REGS
oq = LOCAL_execution;
LOCAL_execution = this;
q_open=1;
q_state=0;
q_flags = PL_Q_PASS_EXCEPTION;
q_p = P;
q_cp = CP;
}
void
YAPQuery::initQuery( Term t )
{
CACHE_REGS
BACKUP_MACHINE_REGS();
arity_t arity = ap->ArityOfPE;
goal = YAPTerm( t );
if (arity) {
q_g = Yap_InitSlots( arity, RepAppl(t) + 1);
} else {
q_g = 0;
}
initOpenQ();
RECOVER_MACHINE_REGS();
}
void
YAPQuery::initQuery( YAPTerm ts[], arity_t arity )
{
CACHE_REGS
BACKUP_MACHINE_REGS();
if (arity) {
q_g = Yap_NewSlots( arity );
for (arity_t i=0; i < arity; i++) {
Yap_PutInSlot(q_g+i, ts[i].term() PASS_REGS);
}
Term t = Yap_MkApplTerm(ap->FunctorOfPred, ap->ArityOfPE, Yap_AddressFromSlot(q_g));
goal = YAPTerm( t );
} else {
q_g = 0;
goal = YAPTerm( MkAtomTerm((Atom)ap->FunctorOfPred) );
}
initOpenQ();
RECOVER_MACHINE_REGS();
}
YAPQuery::YAPQuery(YAPFunctor f, YAPTerm mod, YAPTerm ts[]): YAPPredicate(f, mod)
{
/* ignore flags for now */
initQuery( ts , f.arity());
}
YAPQuery::YAPQuery(YAPFunctor f, YAPTerm ts[]): YAPPredicate(f)
{
/* ignore flags for now */
initQuery( ts , f.arity());
}
YAPQuery::YAPQuery(YAPPredicate p, YAPTerm ts[]): YAPPredicate(p.ap)
{
initQuery( ts , p.ap->ArityOfPE);
}
YAPListTerm YAPQuery::namedVars() {
CACHE_REGS
Term o = Yap_GetFromSlot( vnames );
return YAPListTerm( o );
}
bool YAPQuery::next()
{
CACHE_REGS
int result;
BACKUP_MACHINE_REGS();
if (q_open != 1) return false;
if (setjmp(q_env))
return false;
// don't forget, on success these guys must create slots
if (this->q_state == 0) {
result = (bool)YAP_EnterGoal((YAP_PredEntryPtr)ap, q_g, &q_h);
} else {
LOCAL_AllowRestart = q_open;
result = (bool)YAP_RetryGoal(&q_h);
}
q_state = 1;
if (!result) {
YAP_LeaveGoal(FALSE, &q_h);
q_open = 0;
}
RECOVER_MACHINE_REGS();
return result;
}
void YAPQuery::cut()
{
CACHE_REGS
BACKUP_MACHINE_REGS();
if (q_open != 1 || q_state == 0) return;
YAP_LeaveGoal(FALSE, &q_h);
q_open = 0;
LOCAL_execution = this;
RECOVER_MACHINE_REGS();
}
void YAPQuery::close()
{
CACHE_REGS
RECOVER_MACHINE_REGS();
if (EX && !(q_flags & (PL_Q_CATCH_EXCEPTION))) {
EX = (struct DB_TERM *)NULL;
}
/* need to implement backtracking here */
if (q_open != 1 || q_state == 0) {
RECOVER_MACHINE_REGS();
return;
}
YAP_LeaveGoal(FALSE, &q_h);
q_open = 0;
LOCAL_execution = this;
RECOVER_MACHINE_REGS();
}
static YAPEngine *curren;
#if __ANDROID__
#include <jni.h>
#include <string.h>
JNIEnv *Yap_jenv;
JNIEXPORT jint JNICALL JNI_OnLoad(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;
}
extern char *Yap_AndroidBufp;
static size_t Yap_AndroidMax, Yap_AndroidSz;
extern void(*Yap_DisplayWithJava)(int c);
static void
displayWithJava(int c)
{
char *ptr = Yap_AndroidBufp;
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';
curren->run(Yap_AndroidBufp);
Yap_AndroidSz = 0;
}
}
extern "C" void Java_pt_up_fc_dcc_yap_JavaYap_load(JNIEnv *env0, jobject obj, jobject mgr);
extern "C" void Java_pt_up_fc_dcc_yap_JavaYap_load
(JNIEnv *env0, jobject obj, jobject asset_manager)
{
AAssetManager *mgr = AAssetManager_fromJava(Yap_jenv, asset_manager);
if (mgr == NULL) {
LOG( "we're doomed, mgr = 0; bip bip bip");
} else {
Yap_assetManager = mgr;
}
}
#endif
YAPEngine::YAPEngine( char *savedState,
size_t stackSize,
size_t trailSize,
size_t maxStackSize,
size_t maxTrailSize,
char *libDir,
char *bootFile,
char *goal,
char *topLevel,
bool script,
bool fastBoot,
YAPCallback *cb): _callback(0)
{ // a single engine can be active
#if __ANDROID__
Yap_DisplayWithJava = displayWithJava;
Yap_AndroidBufp = (char *)malloc(Yap_AndroidMax = 4096);
Yap_AndroidBufp[0] = '\0';
Yap_AndroidSz = 0;
#endif
memset((void *)&init_args, 0, sizeof(init_args));
init_args.SavedState = savedState;
init_args.StackSize = stackSize;
init_args.TrailSize = trailSize;
init_args.MaxStackSize = maxStackSize;
init_args.MaxTrailSize = maxTrailSize;
init_args.YapLibDir = libDir;
init_args.YapPrologBootFile = bootFile;
init_args.YapPrologGoal = goal;
init_args.YapPrologTopLevelGoal = topLevel;
init_args.HaltAfterConsult = script;
init_args.FastBoot = fastBoot;
delYAPCallback();
if (cb) setYAPCallback(cb);
curren = this;
if (YAP_Init( &init_args ) == YAP_BOOT_ERROR)
throw(YAPError::YAP_OTHER_ERROR);
}
YAPPredicate::YAPPredicate(YAPAtom at) {
CACHE_REGS
ap = RepPredProp(PredPropByAtom(at.a,Yap_CurrentModule()));
}
YAPPredicate::YAPPredicate(YAPAtom at, arity_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* &outp ) {
CACHE_REGS
Term m = Yap_CurrentModule() ;
t = Yap_StripModule(t, &m);
if (IsVarTerm(t) || IsNumTerm(t)) {
throw YAPError::YAP_TYPE_ERROR;
}
if (IsAtomTerm(t)) {
ap = RepPredProp(PredPropByAtom(AtomOfTerm(t), m));
outp = (Term *)NULL;
return ap;
} else if (IsPairTerm(t)) {
Term ts[2];
ts[0] = t;
ts[1] = m;
t = Yap_MkApplTerm(FunctorCsult, 2, ts);
}
Functor f = FunctorOfTerm(t);
if (IsExtensionFunctor(f)) {
throw YAPError::YAP_TYPE_ERROR;
} else {
ap = RepPredProp(PredPropByFunc(f, m));
outp = RepAppl(t)+1;
}
return ap;
}
YAPPrologPredicate::YAPPrologPredicate(YAPAtom name,
arity_t arity,
YAPModule mod,
bool tabled,
bool logical_updates,
bool thread_local,
bool sourced,
bool discontiguous,
bool multiFile,
bool hidden,
bool untraceable,
bool unspyable,
bool meta,
bool moduleTransparent,
bool quasiQuotable,
size_t mega_clause
) : YAPPredicate(name, arity, mod) {
if (!ap) return;
if (thread_local) {
if (ap->cs.p_code.NOfClauses || tabled)
return;
ap->PredFlags |= (ThreadLocalPredFlag|LogUpdatePredFlag);
} else if (logical_updates) {
if (ap->cs.p_code.NOfClauses || tabled)
return;
ap->PredFlags |= LogUpdatePredFlag;
ap->CodeOfPred = FAILCODE;
ap->OpcodeOfPred = FAILCODE->opc;
}
if (tabled) {
ap->PredFlags |= TabledPredFlag;
if (ap->cs.p_code.NOfClauses || tabled)
return;
ap->PredFlags |= TabledPredFlag;
}
if (sourced) {
ap->PredFlags |= SourcePredFlag;
}
if (discontiguous) {
ap->PredFlags |= DiscontiguousPredFlag;
}
if (multiFile) {
ap->PredFlags |= MultiFileFlag;
}
if (hidden) {
ap->PredFlags |= HiddenPredFlag;
}
if (untraceable) {
ap->PredFlags |= SourcePredFlag;
}
if (unspyable) {
ap->PredFlags |= NoSpyPredFlag;
}
if (meta) {
ap->PredFlags |= MetaPredFlag;
} else if (moduleTransparent) {
ap->PredFlags |= ModuleTransparentPredFlag;
}
if (quasiQuotable) {
ap->PredFlags |= QuasiQuotationPredFlag;
}
if (untraceable) {
ap->PredFlags |= SourcePredFlag;
}
if (hidden) {
ap->PredFlags |= SourcePredFlag;
}
}
void *YAPPrologPredicate::assertClause( YAPTerm clause, bool last, YAPTerm source) {
CACHE_REGS
RECOVER_MACHINE_REGS();
Term tt = clause.gt();
Term sourcet = source.gt();
yamop *codeaddr = Yap_cclause(tt, PP->ArityOfPE, Yap_CurrentModule(), sourcet); /* vsc: give the number of arguments
to cclause in case there is overflow */
Term ntt = clause.gt();
if (LOCAL_ErrorMessage) {
RECOVER_MACHINE_REGS();
return 0;
}
Term *tref = &ntt;
if (Yap_addclause(ntt, codeaddr, (last ? 0 : 2), Yap_CurrentModule(), tref)) {
RECOVER_MACHINE_REGS();
}
return tref;
return 0;
}
void* YAPPrologPredicate::retractClause( YAPTerm skeleton, bool all) {
return 0;
}
void* YAPPrologPredicate::clause( YAPTerm skeleton, YAPTerm &body ) {
return 0;
}