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yap-6.3/C/c_interface.c
vsc bf37b29b4b better handling for scanning errors;
make Yap_error_output a global variable.


git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@693 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
2002-11-19 17:10:45 +00:00

1153 lines
22 KiB
C

/*************************************************************************
* *
* YAP Prolog %W% %G% *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: c_interface.c *
* Last rev: 19/2/88 *
* mods: *
* comments: c_interface primitives definition *
* *
*************************************************************************/
#define Bool int
#define flt double
#define C_INTERFACE
#include "Yap.h"
#include "Yatom.h"
#include "Heap.h"
#include "yapio.h"
#define HAS_YAP_H 1
#include "yap_structs.h"
#ifdef YAPOR
#include "or.macros.h"
#endif /* YAPOR */
#define YAP_BOOT_FROM_PROLOG 0
#define YAP_BOOT_FROM_SAVED_CODE 1
#define YAP_BOOT_FROM_SAVED_STACKS 2
#define YAP_BOOT_FROM_SAVED_ERROR -1
#if defined(_MSC_VER) && defined(YAP_EXPORTS)
#define X_API __declspec(dllexport)
#else
#define X_API
#endif
X_API Term STD_PROTO(YAP_A,(int));
X_API Term STD_PROTO(YAP_Deref,(Term));
X_API Term STD_PROTO(YAP_MkVarTerm,(void));
X_API Bool STD_PROTO(YAP_IsVarTerm,(Term));
X_API Bool STD_PROTO(YAP_IsNonVarTerm,(Term));
X_API Bool STD_PROTO(YAP_IsIntTerm,(Term));
X_API Bool STD_PROTO(YAP_IsFloatTerm,(Term));
X_API Bool STD_PROTO(YAP_IsDbRefTerm,(Term));
X_API Bool STD_PROTO(YAP_IsAtomTerm,(Term));
X_API Bool STD_PROTO(YAP_IsPairTerm,(Term));
X_API Bool STD_PROTO(YAP_IsApplTerm,(Term));
X_API Term STD_PROTO(YAP_MkIntTerm,(Int));
X_API Int STD_PROTO(YAP_IntOfTerm,(Term));
X_API Term STD_PROTO(YAP_MkFloatTerm,(flt));
X_API flt STD_PROTO(YAP_FloatOfTerm,(Term));
X_API Term STD_PROTO(YAP_MkAtomTerm,(Atom));
X_API Atom STD_PROTO(YAP_AtomOfTerm,(Term));
X_API Atom STD_PROTO(YAP_LookupAtom,(char *));
X_API Atom STD_PROTO(YAP_FullLookupAtom,(char *));
X_API char *STD_PROTO(YAP_AtomName,(Atom));
X_API Term STD_PROTO(YAP_MkPairTerm,(Term,Term));
X_API Term STD_PROTO(YAP_MkNewPairTerm,(void));
X_API Term STD_PROTO(YAP_HeadOfTerm,(Term));
X_API Term STD_PROTO(YAP_TailOfTerm,(Term));
X_API Term STD_PROTO(YAP_MkApplTerm,(Functor,unsigned long int,Term *));
X_API Term STD_PROTO(YAP_MkNewApplTerm,(Functor,unsigned long int));
X_API Functor STD_PROTO(YAP_FunctorOfTerm,(Term));
X_API Term STD_PROTO(YAP_ArgOfTerm,(Int,Term));
X_API Functor STD_PROTO(YAP_MkFunctor,(Atom,Int));
X_API Atom STD_PROTO(YAP_NameOfFunctor,(Functor));
X_API Int STD_PROTO(YAP_ArityOfFunctor,(Functor));
X_API void *STD_PROTO(YAP_ExtraSpace,(void));
X_API Int STD_PROTO(YAP_cut_fail,(void));
X_API Int STD_PROTO(YAP_cut_succeed,(void));
X_API Int STD_PROTO(YAP_Unify,(Term,Term));
X_API Int STD_PROTO(YAP_Unify,(Term,Term));
X_API int STD_PROTO(YAP_Reset,(void));
X_API Int STD_PROTO(YAP_Init,(YAP_init_args *));
X_API Int STD_PROTO(YAP_FastInit,(char *));
X_API Int STD_PROTO(YAP_CallProlog,(Term));
X_API void *STD_PROTO(YAP_AllocSpaceFromYap,(unsigned int));
X_API void STD_PROTO(YAP_FreeSpaceFromYap,(void *));
X_API int STD_PROTO(YAP_StringToBuffer, (Term, char *, unsigned int));
X_API Term STD_PROTO(YAP_BufferToString, (char *));
X_API Term STD_PROTO(YAP_BufferToAtomList, (char *));
X_API void STD_PROTO(YAP_Error,(char *));
X_API int STD_PROTO(YAP_RunGoal,(Term));
X_API int STD_PROTO(YAP_RestartGoal,(void));
X_API int STD_PROTO(YAP_GoalHasException,(Term *));
X_API int STD_PROTO(YAP_ContinueGoal,(void));
X_API void STD_PROTO(YAP_PruneGoal,(void));
X_API void STD_PROTO(YAP_InitConsult,(int, char *));
X_API void STD_PROTO(YAP_EndConsult,(void));
X_API Term STD_PROTO(YAP_Read, (int (*)(void)));
X_API void STD_PROTO(YAP_Write, (Term, void (*)(int), int));
X_API char *STD_PROTO(YAP_CompileClause, (Term));
X_API void STD_PROTO(YAP_PutValue, (Atom,Term));
X_API Term STD_PROTO(YAP_GetValue, (Atom));
X_API int STD_PROTO(YAP_Reset, (void));
X_API void STD_PROTO(YAP_Exit, (int));
X_API void STD_PROTO(YAP_InitSocks, (char *, long));
X_API void STD_PROTO(YAP_SetOutputMessage, (void));
X_API int STD_PROTO(YAP_StreamToFileNo, (Term));
X_API void STD_PROTO(YAP_CloseAllOpenStreams,(void));
X_API Term STD_PROTO(YAP_OpenStream,(void *, char *, Term, int));
X_API long STD_PROTO(YAP_NewSlots,(int));
X_API long STD_PROTO(YAP_InitSlot,(Term));
X_API Term STD_PROTO(YAP_GetFromSlot,(long));
X_API Term *STD_PROTO(YAP_AddressFromSlot,(long));
X_API void STD_PROTO(YAP_PutInSlot,(long, Term));
X_API void STD_PROTO(YAP_RecoverSlots,(int));
X_API void STD_PROTO(YAP_Throw,(Term));
X_API int STD_PROTO(YAP_LookupModule,(Term));
X_API Term STD_PROTO(YAP_ModuleName,(int));
X_API void STD_PROTO(YAP_Halt,(int));
X_API Term *STD_PROTO(YAP_TopOfLocalStack,(void));
X_API void *STD_PROTO(YAP_Predicate,(Atom,unsigned long int,int));
X_API void STD_PROTO(YAP_PredicateInfo,(void *,Atom *,unsigned long int *,int *));
X_API void STD_PROTO(YAP_UserCPredicate,(char *,CPredicate,unsigned long int));
X_API void STD_PROTO(YAP_UserBackCPredicate,(char *,CPredicate,CPredicate,unsigned long int,unsigned int));
X_API void STD_PROTO(YAP_UserCPredicateWithArgs,(char *,CPredicate,unsigned long int,int));
X_API Int STD_PROTO(YAP_CurrentModule,(void));
static int (*do_getf)(void);
static int do_yap_getc(int streamno) {
return(do_getf());
}
static void (*do_putcf)(int);
static int do_yap_putc(int streamno,int ch) {
do_putcf(ch);
return(ch);
}
X_API Term
YAP_A(int i)
{
return(Deref(XREGS[i]));
}
X_API Term
YAP_Deref(Term t)
{
return(Deref(t));
}
X_API Bool
YAP_IsIntTerm(Term t)
{
return (IsIntegerTerm(t));
}
X_API Bool
YAP_IsVarTerm(Term t)
{
return (IsVarTerm(t));
}
X_API Bool
YAP_IsNonVarTerm(Term t)
{
return (IsNonVarTerm(t));
}
X_API Bool
YAP_IsFloatTerm(Term t)
{
return (IsFloatTerm(t));
}
X_API Bool
YAP_IsDbRefTerm(Term t)
{
return (IsDBRefTerm(t));
}
X_API Bool
YAP_IsAtomTerm(Term t)
{
return (IsAtomTerm(t));
}
X_API Bool
YAP_IsPairTerm(Term t)
{
return (IsPairTerm(t));
}
X_API Bool
YAP_IsApplTerm(Term t)
{
return (IsApplTerm(t) && !IsExtensionFunctor(FunctorOfTerm(t)));
}
X_API Term
YAP_MkIntTerm(Int n)
{
Term I;
BACKUP_H();
I = MkIntegerTerm(n);
RECOVER_H();
return(I);
}
X_API Int
YAP_IntOfTerm(Term t)
{
if (!IsApplTerm(t))
return (IntOfTerm(t));
else
return(LongIntOfTerm(t));
}
X_API Term
YAP_MkFloatTerm(double n)
{
Term t;
BACKUP_H();
t = MkFloatTerm(n);
RECOVER_H();
return(t);
}
X_API flt
YAP_FloatOfTerm(Term t)
{
return (FloatOfTerm(t));
}
X_API Term
YAP_MkAtomTerm(Atom n)
{
Term t;
t = MkAtomTerm(n);
return(t);
}
X_API Atom
YAP_AtomOfTerm(Term t)
{
return (AtomOfTerm(t));
}
X_API char *
YAP_AtomName(Atom a)
{
char *o;
o = AtomName(a);
return(o);
}
X_API Atom
YAP_LookupAtom(char *c)
{
return(Yap_LookupAtom(c));
}
X_API Atom
YAP_FullLookupAtom(char *c)
{
Atom at;
at = Yap_FullLookupAtom(c);
return(at);
}
X_API Term
YAP_MkVarTerm(void)
{
CELL t;
BACKUP_H();
t = MkVarTerm();
RECOVER_H();
return(t);
}
X_API Term
YAP_MkPairTerm(Term t1, Term t2)
{
Term t;
BACKUP_H();
t = MkPairTerm(t1, t2);
RECOVER_H();
return(t);
}
X_API Term
YAP_MkNewPairTerm()
{
Term t;
BACKUP_H();
t = Yap_MkNewPairTerm();
RECOVER_H();
return(t);
}
X_API Term
YAP_HeadOfTerm(Term t)
{
return (HeadOfTerm(t));
}
X_API Term
YAP_TailOfTerm(Term t)
{
return (TailOfTerm(t));
}
X_API Term
YAP_MkApplTerm(Functor f,unsigned long int arity, Term args[])
{
Term t;
BACKUP_H();
t = Yap_MkApplTerm(f, arity, args);
RECOVER_H();
return(t);
}
X_API Term
YAP_MkNewApplTerm(Functor f,unsigned long int arity)
{
Term t;
BACKUP_H();
t = Yap_MkNewApplTerm(f, arity);
RECOVER_H();
return(t);
}
X_API Functor
YAP_FunctorOfTerm(Term t)
{
return (FunctorOfTerm(t));
}
X_API Term
YAP_ArgOfTerm(Int n, Term t)
{
return (ArgOfTerm(n, t));
}
X_API Functor
YAP_MkFunctor(Atom a, Int n)
{
return (Yap_MkFunctor(a, n));
}
X_API Atom
YAP_NameOfFunctor(Functor f)
{
return (NameOfFunctor(f));
}
X_API Int
YAP_ArityOfFunctor(Functor f)
{
return (ArityOfFunctor(f));
}
X_API void *
YAP_ExtraSpace(void)
{
void *ptr;
BACKUP_B();
/* find a pointer to extra space allocable */
ptr = (void *)((CELL *)(B+1)+P->u.lds.s);
RECOVER_B();
return(ptr);
}
X_API Int
YAP_cut_fail(void)
{
BACKUP_B();
B = B->cp_b; /* cut_fail */
HB = B->cp_h; /* cut_fail */
RECOVER_B();
return(FALSE);
}
X_API Int
YAP_cut_succeed(void)
{
BACKUP_B();
B = B->cp_b;
HB = B->cp_h;
RECOVER_B();
return(TRUE);
}
X_API Int
YAP_Unify(Term t1, Term t2)
{
Int out;
BACKUP_MACHINE_REGS();
out = Yap_unify(t1, t2);
RECOVER_MACHINE_REGS();
return(out);
}
X_API long
YAP_NewSlots(int n)
{
return Yap_NewSlots(n);
}
X_API long
YAP_InitSlot(Term t)
{
return Yap_InitSlot(t);
}
X_API void
YAP_RecoverSlots(int n)
{
Yap_RecoverSlots(n);
}
X_API Term
YAP_GetFromSlot(long slot)
{
return Yap_GetFromSlot(slot);
}
X_API Term *
YAP_AddressFromSlot(long slot)
{
return Yap_AddressFromSlot(slot);
}
X_API void
YAP_PutInSlot(long slot, Term t)
{
Yap_PutInSlot(slot, t);
}
typedef Int (*CPredicate1)(long);
typedef Int (*CPredicate2)(long,long);
typedef Int (*CPredicate3)(long,long,long);
typedef Int (*CPredicate4)(long,long,long,long);
typedef Int (*CPredicate5)(long,long,long,long,long);
typedef Int (*CPredicate6)(long,long,long,long,long,long);
typedef Int (*CPredicate7)(long,long,long,long,long,long,long);
typedef Int (*CPredicate8)(long,long,long,long,long,long,long,long);
Int
YAP_Execute(PredEntry *pe, CPredicate exec_code)
{
if (pe->PredFlags & CArgsPredFlag) {
switch (pe->ArityOfPE) {
case 0:
{
CPredicate code0 = exec_code;
return ((code0)());
}
case 1:
{
CPredicate1 code1 = (CPredicate1)exec_code;
return ((code1)(YAP_InitSlot(Deref(ARG1))));
}
case 2:
{
CPredicate2 code2 = (CPredicate2)exec_code;
return ((code2)(YAP_InitSlot(Deref(ARG1)),
YAP_InitSlot(Deref(ARG2))));
}
case 3:
{
CPredicate3 code3 = (CPredicate3)exec_code;
return ((code3)(YAP_InitSlot(Deref(ARG1)),
YAP_InitSlot(Deref(ARG2)),
YAP_InitSlot(Deref(ARG3))));
}
case 4:
{
CPredicate4 code4 = (CPredicate4)exec_code;
return ((code4)(YAP_InitSlot(Deref(ARG1)),
YAP_InitSlot(Deref(ARG2)),
YAP_InitSlot(Deref(ARG3)),
YAP_InitSlot(Deref(ARG4))));
}
case 5:
{
CPredicate5 code5 = (CPredicate5)exec_code;
return ((code5)(YAP_InitSlot(Deref(ARG1)),
YAP_InitSlot(Deref(ARG2)),
YAP_InitSlot(Deref(ARG3)),
YAP_InitSlot(Deref(ARG4)),
YAP_InitSlot(Deref(ARG5))));
}
case 6:
{
CPredicate6 code6 = (CPredicate6)exec_code;
return ((code6)(YAP_InitSlot(Deref(ARG1)),
YAP_InitSlot(Deref(ARG2)),
YAP_InitSlot(Deref(ARG3)),
YAP_InitSlot(Deref(ARG4)),
YAP_InitSlot(Deref(ARG5)),
YAP_InitSlot(Deref(ARG6))));
}
case 7:
{
CPredicate7 code7 = (CPredicate7)exec_code;
return ((code7)(YAP_InitSlot(Deref(ARG1)),
YAP_InitSlot(Deref(ARG2)),
YAP_InitSlot(Deref(ARG3)),
YAP_InitSlot(Deref(ARG4)),
YAP_InitSlot(Deref(ARG5)),
YAP_InitSlot(Deref(ARG6)),
YAP_InitSlot(Deref(ARG7))));
}
case 8:
{
CPredicate8 code8 = (CPredicate8)exec_code;
return ((code8)(YAP_InitSlot(Deref(ARG1)),
YAP_InitSlot(Deref(ARG2)),
YAP_InitSlot(Deref(ARG3)),
YAP_InitSlot(Deref(ARG4)),
YAP_InitSlot(Deref(ARG5)),
YAP_InitSlot(Deref(ARG6)),
YAP_InitSlot(Deref(ARG7)),
YAP_InitSlot(Deref(ARG8))));
}
default:
return(FALSE);
}
} else {
return((exec_code)());
}
}
X_API Int
YAP_CallProlog(Term t)
{
Int out;
SMALLUNSGN mod = CurrentModule;
BACKUP_MACHINE_REGS();
while (!IsVarTerm(t) &&
IsApplTerm(t) &&
FunctorOfTerm(t) == FunctorModule) {
Term tmod = ArgOfTerm(1,t);
if (IsVarTerm(tmod)) return(FALSE);
if (!IsAtomTerm(tmod)) return(FALSE);
mod = Yap_LookupModule(tmod);
t = ArgOfTerm(2,t);
}
out = Yap_execute_goal(t, 0, mod);
RECOVER_MACHINE_REGS();
return(out);
}
X_API void *
YAP_AllocSpaceFromYap(unsigned int size)
{
void *ptr;
BACKUP_MACHINE_REGS();
if ((ptr = Yap_AllocCodeSpace(size)) == NULL) {
if (!Yap_growheap(FALSE)) {
Yap_Error(SYSTEM_ERROR, TermNil, Yap_ErrorMessage);
return(NULL);
}
}
RECOVER_MACHINE_REGS();
return(ptr);
}
X_API void
YAP_FreeSpaceFromYap(void *ptr)
{
Yap_FreeCodeSpace(ptr);
}
/* copy a string to a buffer */
X_API int
YAP_StringToBuffer(Term t, char *buf, unsigned int bufsize)
{
unsigned int j = 0;
while (t != TermNil) {
register Term Head;
register Int i;
Head = HeadOfTerm(t);
if (IsVarTerm(Head)) {
Yap_Error(INSTANTIATION_ERROR,Head,"user defined procedure");
return(FALSE);
} else if (!IsIntTerm(Head)) {
Yap_Error(REPRESENTATION_ERROR_CHARACTER_CODE,Head,"user defined procedure");
return(FALSE);
}
i = IntOfTerm(Head);
if (i < 0 || i > 255) {
Yap_Error(REPRESENTATION_ERROR_CHARACTER_CODE,Head,"user defined procedure");
return(FALSE);
}
buf[j++] = i;
if (j > bufsize) {
buf[j-1] = '\0';
return(FALSE);
}
t = TailOfTerm(t);
if (IsVarTerm(t)) {
Yap_Error(INSTANTIATION_ERROR,t,"user defined procedure");
return(FALSE);
} else if (!IsPairTerm(t) && t != TermNil) {
Yap_Error(TYPE_ERROR_LIST, t, "user defined procedure");
return(FALSE);
}
}
buf[j] = '\0';
return(TRUE);
}
/* copy a string to a buffer */
X_API Term
YAP_BufferToString(char *s)
{
Term t;
BACKUP_H();
t = Yap_StringToList(s);
RECOVER_H();
return(t);
}
/* copy a string to a buffer */
X_API Term
YAP_BufferToAtomList(char *s)
{
Term t;
BACKUP_H();
t = Yap_StringToListOfAtoms(s);
RECOVER_H();
return(t);
}
X_API void
YAP_Error(char *buf)
{
Yap_Error(SYSTEM_ERROR,TermNil,buf);
}
static void myputc (int ch)
{
putc(ch,stderr);
}
X_API int
YAP_RunGoal(Term t)
{
int out;
yamop *old_CP = CP;
BACKUP_MACHINE_REGS();
out = Yap_RunTopGoal(t);
if (out) {
P = (yamop *)ENV[E_CP];
ENV = (CELL *)ENV[E_E];
CP = old_CP;
} else {
if (B != NULL) /* restore might have destroyed B */
B = B->cp_b;
}
RECOVER_MACHINE_REGS();
return(out);
}
X_API int
YAP_RestartGoal(void)
{
int out;
BACKUP_MACHINE_REGS();
P = (yamop *)FAILCODE;
do_putcf = myputc;
out = Yap_exec_absmi(TRUE);
if (out == FALSE) {
/* cleanup */
Yap_trust_last();
}
RECOVER_MACHINE_REGS();
return(out);
}
X_API int
YAP_ContinueGoal(void)
{
int out;
BACKUP_MACHINE_REGS();
out = Yap_exec_absmi(TRUE);
RECOVER_MACHINE_REGS();
return(out);
}
X_API void
YAP_PruneGoal(void)
{
BACKUP_B();
while (B->cp_ap != NOCODE) {
B = B->cp_b;
}
B = B->cp_b;
RECOVER_B();
}
X_API int
YAP_GoalHasException(Term *t)
{
int out = FALSE;
BACKUP_MACHINE_REGS();
if (EX) {
*t = EX;
out = TRUE;
}
RECOVER_MACHINE_REGS();
return(out);
}
X_API void
YAP_InitConsult(int mode, char *filename)
{
BACKUP_MACHINE_REGS();
if (mode == YAP_CONSULT_MODE)
Yap_init_consult(FALSE, filename);
else
Yap_init_consult(TRUE, filename);
RECOVER_MACHINE_REGS();
}
X_API void
YAP_EndConsult(void)
{
BACKUP_MACHINE_REGS();
Yap_end_consult();
RECOVER_MACHINE_REGS();
}
X_API Term
YAP_Read(int (*mygetc)(void))
{
Term t;
tr_fr_ptr old_TR;
BACKUP_MACHINE_REGS();
do_getf = mygetc;
old_TR = TR;
Yap_tokptr = Yap_toktide = Yap_tokenizer(do_yap_getc, do_yap_getc);
if (Yap_ErrorMessage)
{
TR = old_TR;
save_machine_regs();
return(0);
}
t = Yap_Parse();
TR = old_TR;
RECOVER_MACHINE_REGS();
return(t);
}
X_API void
YAP_Write(Term t, void (*myputc)(int), int flags)
{
BACKUP_MACHINE_REGS();
do_putcf = myputc;
Yap_plwrite (t, do_yap_putc, flags);
RECOVER_MACHINE_REGS();
}
X_API char *
YAP_CompileClause(Term t)
{
char *Yap_ErrorMessage;
CODEADDR codeaddr;
int mod = CurrentModule;
BACKUP_MACHINE_REGS();
Yap_ErrorMessage = NULL;
ARG1 = t;
codeaddr = Yap_cclause (t,0, mod);
if (codeaddr != NULL) {
t = Deref(ARG1); /* just in case there was an heap overflow */
Yap_addclause (t, codeaddr, TRUE, mod);
}
RECOVER_MACHINE_REGS();
return(Yap_ErrorMessage);
}
/* this routine is supposed to be called from an external program
that wants to control Yap */
X_API Int
YAP_Init(YAP_init_args *yap_init)
{
int restore_result;
CELL Trail = 0, Stack = 0, Heap = 0;
BACKUP_MACHINE_REGS();
Yap_argv = yap_init->Argv;
Yap_argc = yap_init->Argc;
if (yap_init->SavedState != NULL ||
yap_init->YapPrologBootFile == NULL) {
if (Yap_SavedInfo (yap_init->SavedState, yap_init->YapLibDir, &Trail, &Stack, &Heap) != 1) {
return(YAP_BOOT_FROM_SAVED_ERROR);
}
}
if (yap_init->TrailSize == 0) {
if (Trail == 0)
Trail = DefTrailSpace;
} else {
Trail = yap_init->TrailSize;
}
if (yap_init->StackSize == 0) {
if (Stack == 0)
Stack = DefStackSpace;
} else {
Stack = yap_init->StackSize;
}
if (yap_init->HeapSize == 0) {
if (Heap == 0)
Heap = DefHeapSpace;
} else {
Heap = yap_init->HeapSize;
}
Yap_InitStacks (Heap, Stack, Trail,
yap_init->NumberWorkers,
yap_init->SchedulerLoop,
yap_init->DelayedReleaseLoad
);
Yap_InitYaamRegs();
#if HAVE_MPI
Yap_InitMPI ();
#endif
#if HAVE_MPE
Yap_InitMPE ();
#endif
if (yap_init->YapPrologRCFile != NULL) {
/*
This must be done before restore, otherwise
restore will print out messages ....
*/
yap_flags[HALT_AFTER_CONSULT_FLAG] = yap_init->HaltAfterConsult;
}
if (yap_init->SavedState != NULL ||
yap_init->YapPrologBootFile == NULL) {
restore_result = Yap_Restore(yap_init->SavedState, yap_init->YapLibDir);
} else {
restore_result = FAIL_RESTORE;
}
yap_flags[FAST_BOOT_FLAG] = yap_init->FastBoot;
#if defined(YAPOR) || defined(TABLING)
make_root_frames();
#ifdef YAPOR
init_workers();
#endif /* YAPOR */
init_local();
#ifdef YAPOR
if (worker_id != 0) {
#if SBA
/*
In the SBA we cannot just happily inherit registers
from the other workers
*/
Yap_InitYaamRegs();
#endif
/* slaves, waiting for work */
CurrentModule = 1;
P = GETWORK_FIRST_TIME;
Yap_exec_absmi(FALSE);
abort_optyap("abstract machine unexpected exit");
}
#endif /* YAPOR */
#endif /* YAPOR || TABLING */
RECOVER_MACHINE_REGS();
if (yap_init->YapPrologRCFile != NULL) {
Yap_PutValue(Yap_FullLookupAtom("$consult_on_boot"), MkAtomTerm(Yap_LookupAtom(yap_init->YapPrologRCFile)));
/*
This must be done again after restore, as yap_flags
has been overwritten ....
*/
yap_flags[HALT_AFTER_CONSULT_FLAG] = yap_init->HaltAfterConsult;
}
if (yap_init->SavedState != NULL ||
yap_init->YapPrologBootFile == NULL) {
if (restore_result == FAIL_RESTORE)
return(YAP_BOOT_FROM_SAVED_ERROR);
if (restore_result == DO_ONLY_CODE) {
return(YAP_BOOT_FROM_SAVED_CODE);
} else {
return(YAP_BOOT_FROM_SAVED_STACKS);
}
}
return(YAP_BOOT_FROM_PROLOG);
}
X_API Int
YAP_FastInit(char saved_state[])
{
YAP_init_args init_args;
init_args.SavedState = saved_state;
init_args.HeapSize = 0;
init_args.StackSize = 0;
init_args.TrailSize = 0;
init_args.YapLibDir = NULL;
init_args.YapPrologBootFile = NULL;
init_args.YapPrologRCFile = NULL;
init_args.HaltAfterConsult = FALSE;
init_args.FastBoot = FALSE;
init_args.NumberWorkers = 1;
init_args.SchedulerLoop = 10;
init_args.DelayedReleaseLoad = 3;
init_args.Argc = 0;
init_args.Argv = NULL;
return(YAP_Init(&init_args));
}
X_API void
YAP_PutValue(Atom at, Term t)
{
Yap_PutValue(at, t);
}
X_API Term
YAP_GetValue(Atom at)
{
return(Yap_GetValue(at));
}
X_API int
YAP_Reset(void)
{
BACKUP_MACHINE_REGS();
/* first, backtrack to the root */
if (B != NULL) {
while (B->cp_b != NULL)
B = B->cp_b;
P = (yamop *)FAILCODE;
if (Yap_exec_absmi(0) != 0)
return(FALSE);
}
/* reinitialise the engine */
Yap_InitYaamRegs();
RECOVER_MACHINE_REGS();
return(TRUE);
}
X_API void
YAP_Exit(int retval)
{
Yap_exit(retval);
}
X_API void
YAP_InitSocks(char *host, long port)
{
#if USE_SOCKET
Yap_init_socks(host, port);
#endif
}
X_API void
YAP_SetOutputMessage(void)
{
#if DEBUG
Yap_output_msg = TRUE;
#endif
}
X_API int
YAP_StreamToFileNo(Term t)
{
return(Yap_StreamToFileNo(t));
}
X_API void
YAP_CloseAllOpenStreams(void)
{
BACKUP_H();
Yap_CloseStreams(FALSE);
RECOVER_H();
}
X_API Term
YAP_OpenStream(void *fh, char *name, Term nm, int flags)
{
Term retv;
BACKUP_H();
retv = Yap_OpenStream((FILE *)fh, name, nm, flags);
RECOVER_H();
return retv;
}
X_API void
YAP_Throw(Term t)
{
BACKUP_MACHINE_REGS();
Yap_JumpToEnv(t);
RECOVER_MACHINE_REGS();
}
X_API int
YAP_LookupModule(Term t)
{
return(Yap_LookupModule(t));
}
X_API Term
YAP_ModuleName(int i)
{
return(ModuleName[i]);
}
X_API void
YAP_Halt(int i)
{
Yap_exit(i);
}
X_API CELL *
YAP_TopOfLocalStack(void)
{
return(ASP);
}
X_API void *
YAP_Predicate(Atom a, unsigned long int arity, int m)
{
if (arity == 0) {
return((void *)RepPredProp(PredPropByAtom(a,m)));
} else {
Functor f = Yap_MkFunctor(a, arity);
return((void *)RepPredProp(PredPropByFunc(f,m)));
}
}
X_API void
YAP_PredicateInfo(void *p, Atom* a, unsigned long int* arity, int* m)
{
PredEntry *pd = (PredEntry *)p;
if (pd->ArityOfPE) {
*arity = pd->ArityOfPE;
*a = NameOfFunctor(pd->FunctorOfPred);
} else {
*arity = 0;
*a = (Atom)(pd->FunctorOfPred);
}
*m = pd->ModuleOfPred;
}
X_API void
YAP_UserCPredicate(char *name, CPredicate def, unsigned long int arity)
{
Yap_InitCPred(name, arity, def, UserCPredFlag);
}
X_API void
YAP_UserBackCPredicate(char *name, CPredicate init, CPredicate cont,
unsigned long int arity, unsigned int extra)
{
Yap_InitCPredBack(name, arity, extra, init, cont, UserCPredFlag);
}
X_API void
YAP_UserCPredicateWithArgs(char *a, CPredicate f, unsigned long int arity, int mod)
{
PredEntry *pe;
SMALLUNSGN cm = CurrentModule;
CurrentModule = mod;
YAP_UserCPredicate(a,f,arity);
if (arity == 0) {
pe = RepPredProp(PredPropByAtom(Yap_LookupAtom(a),mod));
} else {
Functor f = Yap_MkFunctor(Yap_LookupAtom(a), arity);
pe = RepPredProp(PredPropByFunc(f,mod));
}
pe->PredFlags |= CArgsPredFlag;
CurrentModule = cm;
}
X_API Int
YAP_CurrentModule(void)
{
return(CurrentModule);
}