956 lines
21 KiB
C
956 lines
21 KiB
C
/*************************************************************************
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* *
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* YAP Prolog *
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* *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
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* *
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**************************************************************************
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* *
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* File: inlines.c *
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* Last rev: *
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* mods: *
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* comments: C-version for inline code used in meta-calls *
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* *
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*************************************************************************/
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#define IN_INLINES_C 1
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#include "absmi.h"
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#ifdef CUT_C
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#include "cut_c.h"
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#endif
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static Int p_atom( USES_REGS1 );
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static Int p_atomic( USES_REGS1 );
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static Int p_integer( USES_REGS1 );
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static Int p_nonvar( USES_REGS1 );
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static Int p_number( USES_REGS1 );
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static Int p_var( USES_REGS1 );
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static Int p_db_ref( USES_REGS1 );
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static Int p_primitive( USES_REGS1 );
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static Int p_compound( USES_REGS1 );
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static Int p_float( USES_REGS1 );
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static Int p_equal( USES_REGS1 );
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static Int p_dif( USES_REGS1 );
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static Int p_eq( USES_REGS1 );
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static Int p_arg( USES_REGS1 );
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static Int p_functor( USES_REGS1 );
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static Int
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p_atom( USES_REGS1 )
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{ /* atom(?) */
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BEGD(d0);
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d0 = ARG1;
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deref_head(d0, atom_unk);
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atom_nvar:
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if (IsAtomTerm(d0) && !IsBlob(AtomOfTerm(d0))) {
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return(TRUE);
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}
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else {
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return(FALSE);
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}
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BEGP(pt0);
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deref_body(d0, pt0, atom_unk, atom_nvar);
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return(FALSE);
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ENDP(pt0);
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ENDD(d0);
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}
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static Int
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p_atomic( USES_REGS1 )
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{ /* atomic(?) */
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BEGD(d0);
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d0 = ARG1;
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deref_head(d0, atomic_unk);
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atomic_nvar:
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if (IsAtomicTerm(d0)) {
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return(TRUE);
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}
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else {
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return(FALSE);
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}
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BEGP(pt0);
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deref_body(d0, pt0, atomic_unk, atomic_nvar);
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return(FALSE);
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ENDP(pt0);
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ENDD(d0);
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}
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static Int
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p_integer( USES_REGS1 )
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{ /* integer(?,?) */
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BEGD(d0);
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d0 = ARG1;
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deref_head(d0, integer_unk);
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integer_nvar:
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if (IsIntTerm(d0)) {
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return(TRUE);
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}
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if (IsApplTerm(d0)) {
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Functor f0 = FunctorOfTerm(d0);
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if (IsExtensionFunctor(f0)) {
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switch ((CELL)f0) {
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case (CELL)FunctorBigInt:
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{ CELL *pt = RepAppl(d0);
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if ( pt[1] != BIG_RATIONAL || pt[1] != BIG_INT ) {
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return FALSE;
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}
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}
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case (CELL)FunctorLongInt:
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return(TRUE);
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default:
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return(FALSE);
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}
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}
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return(FALSE);
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} else {
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return(FALSE);
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}
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BEGP(pt0);
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deref_body(d0, pt0, integer_unk, integer_nvar);
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ENDP(pt0);
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return(FALSE);
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ENDD(d0);
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}
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static Int
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p_number( USES_REGS1 )
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{ /* number(?) */
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BEGD(d0);
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d0 = ARG1;
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deref_head(d0, number_unk);
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number_nvar:
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if (IsIntTerm(d0)) {
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return(TRUE);
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}
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if (IsApplTerm(d0)) {
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Functor f0 = FunctorOfTerm(d0);
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if (IsExtensionFunctor(f0)) {
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switch ((CELL)f0) {
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case (CELL)FunctorBigInt:
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{ CELL *pt = RepAppl(d0);
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if ( pt[1] != BIG_RATIONAL || pt[1] != BIG_INT ) {
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return FALSE;
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}
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}
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case (CELL)FunctorLongInt:
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case (CELL)FunctorDouble:
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return(TRUE);
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default:
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return(FALSE);
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}
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}
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return(FALSE);
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} else {
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return(FALSE);
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}
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BEGP(pt0);
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deref_body(d0, pt0, number_unk, number_nvar);
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return(FALSE);
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ENDP(pt0);
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ENDD(d0);
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}
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static Int
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p_db_ref( USES_REGS1 )
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{ /* db_reference(?,?) */
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BEGD(d0);
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d0 = ARG1;
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deref_head(d0, db_ref_unk);
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db_ref_nvar:
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if (IsDBRefTerm(d0)) {
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return(TRUE);
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}
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else {
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return(FALSE);
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}
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BEGP(pt0);
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deref_body(d0, pt0, db_ref_unk, db_ref_nvar);
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return(FALSE);
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ENDP(pt0);
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ENDD(d0);
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}
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static Int
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p_primitive( USES_REGS1 )
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{ /* primitive(?) */
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BEGD(d0);
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d0 = ARG1;
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deref_head(d0, primitive_unk);
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primitive_nvar:
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if (IsPrimitiveTerm(d0)) {
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return(TRUE);
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}
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else {
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return(FALSE);
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}
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BEGP(pt0);
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deref_body(d0, pt0, primitive_unk, primitive_nvar);
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return(FALSE);
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ENDP(pt0);
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ENDD(d0);
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}
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static Int
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p_float( USES_REGS1 )
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{ /* float(?) */
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BEGD(d0);
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d0 = ARG1;
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deref_head(d0, float_unk);
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float_nvar:
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if (IsFloatTerm(d0)) {
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return(TRUE);
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}
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else {
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return(FALSE);
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}
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BEGP(pt0);
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deref_body(d0, pt0, float_unk, float_nvar);
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return(FALSE);
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ENDP(pt0);
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ENDD(d0);
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}
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static Int
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p_compound( USES_REGS1 )
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{ /* compound(?) */
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BEGD(d0);
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d0 = ARG1;
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deref_head(d0, compound_unk);
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compound_nvar:
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if (IsPairTerm(d0)) {
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return(TRUE);
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}
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else if (IsApplTerm(d0)) {
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if (IsExtensionFunctor(FunctorOfTerm(d0))) {
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return(FALSE);
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}
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return(TRUE);
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}
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else {
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return(FALSE);
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}
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BEGP(pt0);
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deref_body(d0, pt0, compound_unk, compound_nvar);
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return(FALSE);
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ENDP(pt0);
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ENDD(d0);
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}
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static Int
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p_nonvar( USES_REGS1 )
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{ /* nonvar(?) */
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BEGD(d0);
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d0 = ARG1;
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deref_head(d0, nonvar_unk);
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nonvar_nvar:
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return(TRUE);
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BEGP(pt0);
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deref_body(d0, pt0, nonvar_unk, nonvar_nvar);
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return(FALSE);
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ENDP(pt0);
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ENDD(d0);
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}
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static Int
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p_var( USES_REGS1 )
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{ /* var(?) */
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BEGD(d0);
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d0 = ARG1;
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deref_head(d0, var_unk);
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var_nvar:
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return(FALSE);
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BEGP(pt0);
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deref_body(d0, pt0, var_unk, var_nvar);
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return(TRUE);
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ENDP(pt0);
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ENDD(d0);
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}
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static Int
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p_equal( USES_REGS1 )
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{ /* ?=? */
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return(Yap_IUnify(ARG1, ARG2));
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}
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static Int
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eq(Term t1, Term t2 USES_REGS)
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{ /* ? == ? */
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BEGD(d0);
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d0 = t1;
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deref_head(d0, p_eq_unk1);
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p_eq_nvar1:
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/* first argument is bound */
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BEGD(d1);
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d1 = t2;
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deref_head(d1, p_eq_nvar1_unk2);
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p_eq_nvar1_nvar2:
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/* both arguments are bound */
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if (d0 == d1) {
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return(TRUE);
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}
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if (IsPairTerm(d0)) {
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if (!IsPairTerm(d1)) {
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return(FALSE);
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}
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return(iequ_complex(RepPair(d0)-1, RepPair(d0)+1,RepPair(d1)-1));
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}
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if (IsApplTerm(d0)) {
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Functor f0 = FunctorOfTerm(d0);
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Functor f1;
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if (!IsApplTerm(d1)) {
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return(FALSE);
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}
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f1 = FunctorOfTerm(d1);
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if (f0 != f1) {
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return(FALSE);
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}
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if (IsExtensionFunctor(f0)) {
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switch ((CELL)f0) {
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case (CELL)FunctorDBRef:
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return (d0 == d1);
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case (CELL)FunctorLongInt:
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return(LongIntOfTerm(d0) == LongIntOfTerm(d1));
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#ifdef USE_GMP
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case (CELL)FunctorBigInt:
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return (Yap_gmp_tcmp_big_big(d0, d1) == 0);
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#endif
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case (CELL)FunctorDouble:
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return(FloatOfTerm(d0) == FloatOfTerm(d1));
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default:
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return(FALSE);
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}
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}
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return(iequ_complex(RepAppl(d0), RepAppl(d0)+ArityOfFunctor(f0), RepAppl(d1)));
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}
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return(FALSE);
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BEGP(pt0);
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deref_body(d1, pt0, p_eq_nvar1_unk2, p_eq_nvar1_nvar2);
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ENDP(pt0);
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/* first argument is bound */
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/* second argument is unbound */
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/* I don't need to worry about co-routining because an
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unbound variable may never be == to a constrained variable!! */
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return(FALSE);
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ENDD(d1);
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BEGP(pt0);
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deref_body(d0, pt0, p_eq_unk1, p_eq_nvar1);
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BEGD(d1);
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d1 = ARG2;
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deref_head(d1, p_eq_var1_unk2);
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p_eq_var1_nvar2:
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/* I don't need to worry about co-routining because an
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unbound variable may never be == to a constrained variable!! */
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return(FALSE);
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BEGP(pt1);
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deref_body(d1, pt1, p_eq_var1_unk2, p_eq_var1_nvar2);
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/* first argument is unbound */
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/* second argument is unbound */
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return(pt1 == pt0);
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ENDP(pt1);
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ENDD(d1);
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ENDP(pt0);
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ENDD(d0);
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}
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static Int
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p_eq( USES_REGS1 )
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{ /* ? == ? */
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return eq(ARG1,ARG2 PASS_REGS);
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}
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int
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Yap_eq(Term t1, Term t2)
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{ /* ? == ? */
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CACHE_REGS
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return eq(t1,t2 PASS_REGS);
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}
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static Int
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p_dif( USES_REGS1 )
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{ /* ? \= ? */
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#if SHADOW_HB
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register CELL *HBREG = HB;
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#endif
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BEGD(d0);
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BEGD(d1);
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d0 = ARG1;
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deref_head(d0, dif_unk1);
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dif_nvar1:
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/* first argument is bound */
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d1 = ARG2;
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deref_head(d1, dif_nvar1_unk2);
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dif_nvar1_nvar2:
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/* both arguments are bound */
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if (d0 == d1) {
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return FALSE;
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}
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if (IsAtomOrIntTerm(d0) || IsAtomOrIntTerm(d1)) {
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return TRUE;
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} else {
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#ifdef COROUTINING
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/*
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* We may wake up goals during our attempt to unify the
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* two terms. If we are adding to the tail of a list of
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* woken goals that should be ok, but otherwise we need
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* to restore LOCAL_WokenGoals to its previous value.
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*/
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CELL OldWokenGoals = Yap_ReadTimedVar(LOCAL_WokenGoals);
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#endif
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register tr_fr_ptr pt0;
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/* store the old value of TR for clearing bindings */
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pt0 = TR;
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BEGCHO(pt1);
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pt1 = B;
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/* make B and HB point to H to guarantee all bindings will
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* be trailed
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*/
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HBREG = H;
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B = (choiceptr) H;
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B->cp_h = H;
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SET_BB(B);
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save_hb();
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d0 = Yap_IUnify(d0, d1);
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#ifdef COROUTINING
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/* now restore Woken Goals to its old value */
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Yap_UpdateTimedVar(LOCAL_WokenGoals, OldWokenGoals);
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if (OldWokenGoals == TermNil) {
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Yap_undo_signal(YAP_WAKEUP_SIGNAL);
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}
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#endif
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/* restore B */
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B = pt1;
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SET_BB(PROTECT_FROZEN_B(pt1));
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#ifdef COROUTINING
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H = HBREG;
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#endif
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HBREG = B->cp_h;
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/* untrail all bindings made by Yap_IUnify */
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while (TR != pt0) {
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BEGD(d1);
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d1 = TrailTerm(--TR);
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if (IsVarTerm(d1)) {
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#if defined(YAPOR_SBA) && defined(YAPOR)
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/* clean up the trail when we backtrack */
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if (Unsigned((Int)(d1)-(Int)(H_FZ)) >
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Unsigned((Int)(B_FZ)-(Int)(H_FZ))) {
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RESET_VARIABLE(STACK_TO_SBA(d1));
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} else
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#endif
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/* normal variable */
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RESET_VARIABLE(d1);
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#ifdef MULTI_ASSIGNMENT_VARIABLES
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} else /* if (IsApplTerm(d1)) */ {
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CELL *pt = RepAppl(d1);
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/* AbsAppl means */
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/* multi-assignment variable */
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/* so the next cell is the old value */
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#ifdef FROZEN_STACKS
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pt[0] = TrailVal(--TR);
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#else
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pt[0] = TrailTerm(--TR);
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TR--;
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#endif /* FROZEN_STACKS */
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#endif /* MULTI_ASSIGNMENT_VARIABLES */
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}
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ENDD(d1);
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}
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return !d0;
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ENDP(pt0);
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}
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BEGP(pt0);
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deref_body(d0, pt0, dif_unk1, dif_nvar1);
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ENDP(pt0);
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/* first argument is unbound */
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return FALSE;
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BEGP(pt0);
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deref_body(d1, pt0, dif_nvar1_unk2, dif_nvar1_nvar2);
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ENDP(pt0);
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/* second argument is unbound */
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return FALSE;
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ENDD(d1);
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ENDD(d0);
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}
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static Int
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p_arg( USES_REGS1 )
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{ /* arg(?,?,?) */
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#if SHADOW_HB
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register CELL *HBREG = HB;
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#endif
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BEGD(d0);
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d0 = ARG1;
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deref_head(d0, arg_arg1_unk);
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arg_arg1_nvar:
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/* ARG1 is ok! */
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if (IsIntTerm(d0))
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d0 = IntOfTerm(d0);
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else if (IsLongIntTerm(d0)) {
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d0 = LongIntOfTerm(d0);
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} else {
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Yap_Error(TYPE_ERROR_INTEGER,d0,"arg 1 of arg/3");
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return(FALSE);
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}
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/* d0 now got the argument we want */
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BEGD(d1);
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d1 = ARG2;
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deref_head(d1, arg_arg2_unk);
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arg_arg2_nvar:
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/* d1 now got the structure we want to fetch the argument
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* from */
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if (IsApplTerm(d1)) {
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BEGP(pt0);
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pt0 = RepAppl(d1);
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d1 = *pt0;
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if (IsExtensionFunctor((Functor) d1)) {
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return(FALSE);
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}
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save_hb();
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if ((Int)d0 <= 0 ||
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(Int)d0 > ArityOfFunctor((Functor) d1) ||
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Yap_IUnify(pt0[d0], ARG3) == FALSE) {
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/* don't complain here for Prolog compatibility
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if ((Int)d0 <= 0) {
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Yap_Error(DOMAIN_ERROR_NOT_LESS_THAN_ZERO,
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MkIntegerTerm(d0),"arg 1 of arg/3");
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}
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*/
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return(FALSE);
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}
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return(TRUE);
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ENDP(pt0);
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}
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|
else if (IsPairTerm(d1)) {
|
|
BEGP(pt0);
|
|
pt0 = RepPair(d1);
|
|
if (d0 == 1) {
|
|
save_hb();
|
|
if (Yap_IUnify((CELL)pt0, ARG3) == FALSE) {
|
|
return(FALSE);
|
|
}
|
|
return(TRUE);
|
|
}
|
|
else if (d0 == 2) {
|
|
save_hb();
|
|
if (Yap_IUnify((CELL)(pt0+1), ARG3) == FALSE) {
|
|
return(FALSE);
|
|
}
|
|
return(TRUE);
|
|
}
|
|
else {
|
|
if ((Int)d0 < 0)
|
|
Yap_Error(DOMAIN_ERROR_NOT_LESS_THAN_ZERO,
|
|
MkIntegerTerm(d0),"arg 1 of arg/3");
|
|
return(FALSE);
|
|
}
|
|
ENDP(pt0);
|
|
}
|
|
else {
|
|
/* Yap_Error(TYPE_ERROR_COMPOUND, d1, "arg 2 of arg/3"); */
|
|
return(FALSE);
|
|
}
|
|
|
|
BEGP(pt0);
|
|
deref_body(d1, pt0, arg_arg2_unk, arg_arg2_nvar);
|
|
Yap_Error(INSTANTIATION_ERROR,(CELL)pt0,"arg 2 of arg/3");;
|
|
ENDP(pt0);
|
|
return(FALSE);
|
|
ENDD(d1);
|
|
|
|
BEGP(pt0);
|
|
deref_body(d0, pt0, arg_arg1_unk, arg_arg1_nvar);
|
|
Yap_Error(INSTANTIATION_ERROR,(CELL)pt0,"arg 1 of arg/3");;
|
|
ENDP(pt0);
|
|
return(FALSE);
|
|
ENDD(d0);
|
|
|
|
}
|
|
|
|
static Int
|
|
p_functor( USES_REGS1 ) /* functor(?,?,?) */
|
|
{
|
|
#if SHADOW_HB
|
|
register CELL *HBREG;
|
|
#endif
|
|
|
|
restart:
|
|
#if SHADOW_HB
|
|
HBREG = HB;
|
|
#endif
|
|
BEGD(d0);
|
|
d0 = ARG1;
|
|
deref_head(d0, func_unk);
|
|
func_nvar:
|
|
/* A1 is bound */
|
|
BEGD(d1);
|
|
if (IsApplTerm(d0)) {
|
|
d1 = *RepAppl(d0);
|
|
if (IsExtensionFunctor((Functor) d1)) {
|
|
if (d1 == (CELL)FunctorDouble) {
|
|
d1 = MkIntTerm(0);
|
|
} else if (d1 == (CELL)FunctorLongInt) {
|
|
d1 = MkIntTerm(0);
|
|
} else
|
|
return(FALSE);
|
|
} else {
|
|
d0 = MkAtomTerm(NameOfFunctor((Functor) d1));
|
|
d1 = MkIntTerm(ArityOfFunctor((Functor) d1));
|
|
}
|
|
}
|
|
else if (IsPairTerm(d0)) {
|
|
d0 = TermDot;
|
|
d1 = MkIntTerm(2);
|
|
}
|
|
else {
|
|
d1 = MkIntTerm(0);
|
|
}
|
|
/* d1 and d0 now have the two arguments */
|
|
/* let's go and bind them */
|
|
{
|
|
register CELL arity = d1;
|
|
|
|
d1 = ARG2;
|
|
deref_head(d1, func_nvar_unk);
|
|
func_nvar_nvar:
|
|
/* A2 was bound */
|
|
if (d0 != d1) {
|
|
return(FALSE);
|
|
}
|
|
/* have to buffer ENDP and label */
|
|
d0 = arity;
|
|
goto func_bind_x3;
|
|
|
|
BEGP(pt0);
|
|
deref_body(d1, pt0, func_nvar_unk, func_nvar_nvar);
|
|
/* A2 is a variable, go and bind it */
|
|
Bind(pt0, d0);
|
|
/* have to buffer ENDP and label */
|
|
d0 = arity;
|
|
ENDP(pt0);
|
|
/* now let's process A3 */
|
|
|
|
func_bind_x3:
|
|
d1 = ARG3;
|
|
deref_head(d1, func_nvar3_unk);
|
|
func_nvar3_nvar:
|
|
/* A3 was bound */
|
|
if (d0 != d1) {
|
|
return(FALSE);
|
|
}
|
|
/* Done */
|
|
return(TRUE);
|
|
|
|
|
|
BEGP(pt0);
|
|
deref_body(d1, pt0, func_nvar3_unk, func_nvar3_nvar);
|
|
/* A3 is a variable, go and bind it */
|
|
Bind(pt0, d0);
|
|
return(TRUE);
|
|
|
|
ENDP(pt0);
|
|
|
|
}
|
|
ENDD(d1);
|
|
|
|
BEGP(pt0);
|
|
deref_body(d0, pt0, func_unk, func_nvar);
|
|
/* A1 is a variable */
|
|
/* We have to build the structure */
|
|
d0 = ARG2;
|
|
deref_head(d0, func_var_2unk);
|
|
func_var_2nvar:
|
|
/* we do, let's get the third argument */
|
|
BEGD(d1);
|
|
d1 = ARG3;
|
|
deref_head(d1, func_var_3unk);
|
|
func_var_3nvar:
|
|
/* Uuuff, the second and third argument are bound */
|
|
if (IsIntegerTerm(d1))
|
|
d1 = IntOfTerm(d1);
|
|
else {
|
|
if (IsBigIntTerm(d1)) {
|
|
Yap_Error(RESOURCE_ERROR_STACK, ARG3, "functor/3");
|
|
} else {
|
|
Yap_Error(TYPE_ERROR_INTEGER,ARG3,"functor/3");
|
|
}
|
|
return(FALSE);
|
|
}
|
|
if (!IsAtomicTerm(d0)) {
|
|
Yap_Error(TYPE_ERROR_ATOMIC,d0,"functor/3");
|
|
return(FALSE);
|
|
}
|
|
/* We made it!!!!! we got in d0 the name, in d1 the arity and
|
|
* in pt0 the variable to bind it to. */
|
|
if (d0 == TermDot && d1 == 2) {
|
|
RESET_VARIABLE(H);
|
|
RESET_VARIABLE(H+1);
|
|
d0 = AbsPair(H);
|
|
H += 2;
|
|
}
|
|
else if ((Int)d1 > 0) {
|
|
/* now let's build a compound term */
|
|
if (!IsAtomTerm(d0)) {
|
|
Yap_Error(TYPE_ERROR_ATOM,d0,"functor/3");
|
|
return(FALSE);
|
|
}
|
|
BEGP(pt1);
|
|
if (!IsAtomTerm(d0)) {
|
|
return(FALSE);
|
|
}
|
|
else
|
|
d0 = (CELL) Yap_MkFunctor(AtomOfTerm(d0), (Int) d1);
|
|
pt1 = H;
|
|
*pt1++ = d0;
|
|
d0 = AbsAppl(H);
|
|
if (pt1+d1 > ENV - CreepFlag) {
|
|
if (!Yap_gcl((1+d1)*sizeof(CELL), 3, ENV, gc_P(P,CP))) {
|
|
Yap_Error(OUT_OF_STACK_ERROR, TermNil, LOCAL_ErrorMessage);
|
|
return FALSE;
|
|
}
|
|
goto restart;
|
|
}
|
|
while (d1-- > 0) {
|
|
RESET_VARIABLE(pt1);
|
|
pt1++;
|
|
}
|
|
/* done building the term */
|
|
H = pt1;
|
|
ENDP(pt1);
|
|
} else if ((Int)d1 < 0) {
|
|
Yap_Error(DOMAIN_ERROR_NOT_LESS_THAN_ZERO,MkIntegerTerm(d1),"functor/3");
|
|
return(FALSE);
|
|
}
|
|
/* else if arity is 0 just pass d0 through */
|
|
/* Ding, ding, we made it */
|
|
Bind(pt0, d0);
|
|
return(TRUE);
|
|
|
|
|
|
BEGP(pt1);
|
|
deref_body(d1, pt1, func_var_3unk, func_var_3nvar);
|
|
Yap_Error(INSTANTIATION_ERROR,(CELL)pt1,"functor/3");
|
|
ENDP(pt1);
|
|
/* Oops, third argument was unbound */
|
|
return(FALSE);
|
|
ENDD(d1);
|
|
|
|
BEGP(pt1);
|
|
|
|
deref_body(d0, pt1, func_var_2unk, func_var_2nvar);
|
|
Yap_Error(INSTANTIATION_ERROR,(CELL)pt1,"functor/3");
|
|
ENDP(pt1);
|
|
/* Oops, second argument was unbound too */
|
|
return(FALSE);
|
|
ENDP(pt0);
|
|
ENDD(d0);
|
|
}
|
|
|
|
static Term
|
|
cp_as_integer(choiceptr cp USES_REGS)
|
|
{
|
|
return(MkIntegerTerm(LCL0-(CELL *)cp));
|
|
}
|
|
|
|
|
|
static Int
|
|
p_cut_by( USES_REGS1 )
|
|
{
|
|
BEGD(d0);
|
|
d0 = ARG1;
|
|
deref_head(d0, cutby_x_unk);
|
|
cutby_x_nvar:
|
|
#if YAPOR_SBA
|
|
if (!IsIntegerTerm(d0)) {
|
|
#else
|
|
if (!IsIntTerm(d0)) {
|
|
#endif
|
|
return(FALSE);
|
|
}
|
|
BEGCHO(pt0);
|
|
#if YAPOR_SBA
|
|
pt0 = (choiceptr)IntegerOfTerm(d0);
|
|
#else
|
|
pt0 = (choiceptr)(LCL0-IntOfTerm(d0));
|
|
#endif
|
|
#ifdef CUT_C
|
|
{
|
|
while (POP_CHOICE_POINT(pt0))
|
|
{
|
|
POP_EXECUTE();
|
|
}
|
|
}
|
|
#endif /* CUT_C */
|
|
#ifdef YAPOR
|
|
CUT_prune_to(pt0);
|
|
#endif /* YAPOR */
|
|
/* find where to cut to */
|
|
if (pt0 > B) {
|
|
/* Wow, we're gonna cut!!! */
|
|
#ifdef TABLING
|
|
while (B->cp_b < pt0) {
|
|
B = B->cp_b;
|
|
}
|
|
abolish_incomplete_subgoals(B);
|
|
#endif /* TABLING */
|
|
B = pt0;
|
|
HB = B->cp_h;
|
|
Yap_TrimTrail();
|
|
}
|
|
ENDCHO(pt0);
|
|
return(TRUE);
|
|
|
|
BEGP(pt0);
|
|
deref_body(d0, pt0, cutby_x_unk, cutby_x_nvar);
|
|
/* never cut to a variable */
|
|
/* Abort */
|
|
return(FALSE);
|
|
ENDP(pt0);
|
|
ENDD(d0);
|
|
}
|
|
|
|
static Int
|
|
p_erroneous_call( USES_REGS1 )
|
|
{
|
|
Yap_Error(SYSTEM_ERROR, TermNil, "bad call to internal built-in");
|
|
return(FALSE);
|
|
}
|
|
|
|
static Int
|
|
init_genarg( USES_REGS1 )
|
|
{ /* getarg(?Atom) */
|
|
Term t0 = Deref(ARG1);
|
|
Term t1 = Deref(ARG2);
|
|
CELL *pt, *end;
|
|
int res;
|
|
UInt arity;
|
|
|
|
if (!IsVarTerm(t0)) {
|
|
res = p_arg( PASS_REGS1 );
|
|
if (res) {
|
|
cut_succeed();
|
|
} else {
|
|
cut_fail();
|
|
}
|
|
}
|
|
if (IsVarTerm(t1)) {
|
|
Yap_Error(INSTANTIATION_ERROR,t1,"genarg/3");
|
|
return FALSE;
|
|
}
|
|
if (IsPrimitiveTerm(t1)) {
|
|
Yap_Error(TYPE_ERROR_COMPOUND,t1,"genarg/3");
|
|
return FALSE;
|
|
}
|
|
if (IsPairTerm(t1)) {
|
|
pt = RepPair(t1);
|
|
end = RepPair(t1)+1;
|
|
arity = 2;
|
|
} else {
|
|
arity = ArityOfFunctor(FunctorOfTerm(t1));
|
|
pt = RepAppl(t1);
|
|
end = pt+arity;
|
|
pt += 1;
|
|
}
|
|
res = Yap_unify(ARG1,MkIntTerm(1)) &&
|
|
Yap_unify(ARG3,pt[0]);
|
|
if (arity == 1) {
|
|
if (res) {
|
|
cut_succeed();
|
|
} else {
|
|
cut_fail();
|
|
}
|
|
}
|
|
EXTRA_CBACK_ARG(3,1) = (Term)(pt+1);
|
|
EXTRA_CBACK_ARG(3,2) = (Term)(end);
|
|
EXTRA_CBACK_ARG(3,3) = MkIntegerTerm(arity);
|
|
return res;
|
|
}
|
|
|
|
static Int
|
|
cont_genarg( USES_REGS1 )
|
|
{ /* genarg(?Atom) */
|
|
CELL *pt, *end;
|
|
int res;
|
|
UInt arity;
|
|
|
|
pt = (CELL *)EXTRA_CBACK_ARG(3,1);
|
|
end = (CELL *)EXTRA_CBACK_ARG(3,2);
|
|
arity = IntegerOfTerm(EXTRA_CBACK_ARG(3,3));
|
|
if (pt == end) {
|
|
res = Yap_unify(ARG1,MkIntegerTerm(arity)) &&
|
|
Yap_unify(ARG3,pt[0]);
|
|
if (res) {
|
|
cut_succeed();
|
|
} else {
|
|
cut_fail();
|
|
}
|
|
}
|
|
EXTRA_CBACK_ARG(3,1) = (Term)(pt+1);
|
|
return Yap_unify(ARG1,MkIntegerTerm(arity-(end-pt))) &&
|
|
Yap_unify(ARG3,pt[0]);
|
|
}
|
|
|
|
static Int
|
|
p_save_cp( USES_REGS1 )
|
|
{
|
|
Term t = Deref(ARG1);
|
|
Term td;
|
|
#if SHADOW_HB
|
|
register CELL *HBREG = HB;
|
|
#endif
|
|
if (!IsVarTerm(t)) return(FALSE);
|
|
td = cp_as_integer(B PASS_REGS);
|
|
Bind((CELL *)t,td);
|
|
return(TRUE);
|
|
}
|
|
|
|
|
|
void
|
|
Yap_InitInlines(void)
|
|
{
|
|
CACHE_REGS
|
|
Term cm = CurrentModule;
|
|
Yap_InitAsmPred("$$cut_by", 1, _cut_by, p_cut_by, SafePredFlag);
|
|
Yap_InitAsmPred("$$save_by", 1, _save_by, p_save_cp, SafePredFlag);
|
|
Yap_InitAsmPred("atom", 1, _atom, p_atom, SafePredFlag);
|
|
Yap_InitAsmPred("atomic", 1, _atomic, p_atomic, SafePredFlag);
|
|
Yap_InitAsmPred("integer", 1, _integer, p_integer, SafePredFlag);
|
|
Yap_InitAsmPred("nonvar", 1, _nonvar, p_nonvar, SafePredFlag);
|
|
Yap_InitAsmPred("number", 1, _number, p_number, SafePredFlag);
|
|
Yap_InitAsmPred("var", 1, _var, p_var, SafePredFlag);
|
|
Yap_InitAsmPred("db_reference", 1, _db_ref, p_db_ref, SafePredFlag);
|
|
Yap_InitAsmPred("primitive", 1, _primitive, p_primitive, SafePredFlag);
|
|
Yap_InitAsmPred("compound", 1, _compound, p_compound, SafePredFlag);
|
|
Yap_InitAsmPred("float", 1, _float, p_float, SafePredFlag);
|
|
Yap_InitAsmPred("=", 2, _equal, p_equal, SafePredFlag);
|
|
Yap_InitAsmPred("\\=", 2, _dif, p_dif, SafePredFlag);
|
|
Yap_InitAsmPred("==", 2, _eq, p_eq, SafePredFlag);
|
|
Yap_InitAsmPred("arg", 3, _arg, p_arg, SafePredFlag);
|
|
Yap_InitAsmPred("functor", 3, _functor, p_functor, 0);
|
|
Yap_InitAsmPred("$label_ctl", 2, _p_label_ctl, p_erroneous_call, SafePredFlag);
|
|
CurrentModule = ARG_MODULE;
|
|
Yap_InitCPredBack("genarg", 3, 3, init_genarg, cont_genarg,SafePredFlag);
|
|
CurrentModule = cm;
|
|
}
|
|
|