diogo/yap-6.3
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This commit is contained in:
Vítor Santos Costa 2016-01-31 10:14:28 +00:00
parent d90a0f72b0
commit 9444c36ff4
1 changed files with 38 additions and 54 deletions
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92
C/clause_list.c
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@ -3,49 +3,42 @@
#include "tracer.h"
#ifdef YAPOR
#include "or.macros.h"
#endif /* YAPOR */
#endif /* YAPOR */
#include "clause_list.h"
/* need to fix overflow handling */
static void
mk_blob(int sz USES_REGS)
{
static void mk_blob(int sz USES_REGS) {
MP_INT *dst;
HR[0] = (CELL)FunctorBigInt;
HR[1] = CLAUSE_LIST;
dst = (MP_INT *)(HR+2);
dst = (MP_INT *)(HR + 2);
dst->_mp_size = 0L;
dst->_mp_alloc = sz;
HR += (1+sizeof(MP_INT)/sizeof(CELL));
HR += (1 + sizeof(MP_INT) / sizeof(CELL));
HR[sz] = EndSpecials;
HR += sz+1;
HR += sz + 1;
}
static CELL *
extend_blob(CELL *start, int sz USES_REGS)
{
static CELL *extend_blob(CELL *start, int sz USES_REGS) {
UInt osize;
MP_INT *dst;
if (HR + sz > ASP)
return NULL;
dst = (MP_INT *)(start+2);
dst = (MP_INT *)(start + 2);
osize = dst->_mp_alloc;
start += (1+sizeof(MP_INT)/sizeof(CELL));
start[sz+osize] = EndSpecials;
start += (1 + sizeof(MP_INT) / sizeof(CELL));
start[sz + osize] = EndSpecials;
dst->_mp_alloc += sz;
HR += sz;
return start+osize;
return start + osize;
}
/*init of ClasuseList*/
X_API clause_list_t
Yap_ClauseListInit(clause_list_t in)
{
CACHE_REGS
in->n = 0;
clause_list_t Yap_ClauseListInit(clause_list_t in) {
CACHE_REGS in->n = 0;
in->start = HR;
mk_blob(0 PASS_REGS);
in->end = HR;
@ -54,9 +47,7 @@ Yap_ClauseListInit(clause_list_t in)
/*add clause to ClauseList
returns FALSE on error*/
X_API int
Yap_ClauseListExtend(clause_list_t cl, void * clause, void *pred)
{
int Yap_ClauseListExtend(clause_list_t cl, void *clause, void *pred) {
CACHE_REGS
PredEntry *ap = (PredEntry *)pred;
@ -65,15 +56,19 @@ Yap_ClauseListExtend(clause_list_t cl, void * clause, void *pred)
return FALSE;
if (cl->n == 0) {
void **ptr;
if (!(ptr = (void **)extend_blob(cl->start,1 PASS_REGS))) return FALSE;
if (!(ptr = (void **)extend_blob(cl->start, 1 PASS_REGS)))
return FALSE;
ptr[0] = clause;
} else if (cl->n == 1) {
} else if (cl->n == 1) {
yamop **ptr;
yamop *code_p, *fclause;
if (!(ptr = (yamop **)extend_blob(cl->start,2*(CELL)NEXTOP((yamop *)NULL,Otapl)/sizeof(CELL)-1 PASS_REGS))) return FALSE;
if (!(ptr = (yamop **)extend_blob(
cl->start, 2 * (CELL)NEXTOP((yamop *)NULL, Otapl) / sizeof(CELL) -
1 PASS_REGS)))
return FALSE;
fclause = ptr[-1];
code_p = (yamop *)(ptr-1);
code_p = (yamop *)(ptr - 1);
code_p->opc = Yap_opcode(_try_clause);
code_p->y_u.Otapl.d = fclause;
code_p->y_u.Otapl.s = ap->ArityOfPE;
@ -84,7 +79,7 @@ Yap_ClauseListExtend(clause_list_t cl, void * clause, void *pred)
#ifdef YAPOR
INIT_YAMOP_LTT(code_p, 0);
#endif /* YAPOR */
code_p = NEXTOP(code_p,Otapl);
code_p = NEXTOP(code_p, Otapl);
code_p->opc = Yap_opcode(_trust);
code_p->y_u.Otapl.d = clause;
code_p->y_u.Otapl.s = ap->ArityOfPE;
@ -98,7 +93,10 @@ Yap_ClauseListExtend(clause_list_t cl, void * clause, void *pred)
} else {
yamop *code_p;
if (!(code_p = (yamop *)extend_blob(cl->start,((CELL)NEXTOP((yamop *)NULL,Otapl))/sizeof(CELL) PASS_REGS))) return FALSE;
if (!(code_p = (yamop *)extend_blob(cl->start,
((CELL)NEXTOP((yamop *)NULL, Otapl)) /
sizeof(CELL) PASS_REGS)))
return FALSE;
code_p->opc = Yap_opcode(_trust);
code_p->y_u.Otapl.d = clause;
code_p->y_u.Otapl.s = ap->ArityOfPE;
@ -109,7 +107,7 @@ Yap_ClauseListExtend(clause_list_t cl, void * clause, void *pred)
#ifdef YAPOR
INIT_YAMOP_LTT(code_p, 0);
#endif /* YAPOR */
code_p = PREVOP(code_p,Otapl);
code_p = PREVOP(code_p, Otapl);
code_p->opc = Yap_opcode(_retry);
}
cl->end = HR;
@ -118,16 +116,11 @@ Yap_ClauseListExtend(clause_list_t cl, void * clause, void *pred)
}
/*closes the clause list*/
X_API void
Yap_ClauseListClose(clause_list_t cl)
{
/* no need to do nothing */
void Yap_ClauseListClose(clause_list_t cl) { /* no need to do nothing */
}
/*destroys the clause list freeing memory*/
X_API int
Yap_ClauseListDestroy(clause_list_t cl)
{
int Yap_ClauseListDestroy(clause_list_t cl) {
CACHE_REGS
if (cl->end != HR)
return FALSE;
@ -136,34 +129,25 @@ Yap_ClauseListDestroy(clause_list_t cl)
}
/*destroys clause list and returns only first clause*/
X_API void *
Yap_ClauseListToClause(clause_list_t cl)
{
void *Yap_ClauseListToClause(clause_list_t cl) {
CACHE_REGS
void **ptr;
if (cl->end != HR)
return NULL;
if (cl->n != 1)
return NULL;
if (!(ptr = (void **)extend_blob(cl->start,0 PASS_REGS))) return NULL;
if (!(ptr = (void **)extend_blob(cl->start, 0 PASS_REGS)))
return NULL;
return ptr[-1];
}
/*return pointer to start of try-retry-trust sequence*/
X_API void *
Yap_ClauseListCode(clause_list_t cl)
{
void *Yap_ClauseListCode(clause_list_t cl) {
CELL *ptr;
ptr = (CELL *)cl->start;
ptr += (1+sizeof(MP_INT)/sizeof(CELL));
ptr += (1 + sizeof(MP_INT) / sizeof(CELL));
return (void *)ptr;
}
/* where to fail */
X_API void *
Yap_FAILCODE(void)
{
return (void *)FAILCODE;
}
void *Yap_FAILCODE(void) { return (void *)FAILCODE; }