167 lines
3.7 KiB
C
167 lines
3.7 KiB
C
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#include "Yap.h"
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#include "Yatom.h"
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/**
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* Scan a list of arguments and output results to a pre-processed vector.
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*
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* @param listl: input list
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* @param def parameter definition
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*
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* @return all arguments, some of them set, some of them not.
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*/
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static xarg *
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matchKey(Atom key, xarg *e0, int n, const param_t *def)
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{
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int i;
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for (i=0; i< n; i++) {
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if (!strcmp((char *)def->name, (char *)RepAtom(key)->StrOfAE)) {
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return e0;
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}
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def++;
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e0++;
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}
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return NULL;
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}
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xarg *
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Yap_ArgListToVector (Term listl, const param_t *def, int n)
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{
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CACHE_REGS
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if (IsApplTerm(listl) && FunctorOfTerm(listl) == FunctorModule)
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listl = ArgOfTerm(2,listl);
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if (!IsPairTerm(listl) && listl != TermNil) {
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listl = MkPairTerm( listl, TermNil );
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}
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xarg *a = calloc( n , sizeof(xarg) );
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while (IsPairTerm(listl)) {
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Term hd = HeadOfTerm( listl );
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listl = TailOfTerm( listl );
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if (IsVarTerm(hd)) {
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LOCAL_Error_TYPE = INSTANTIATION_ERROR;
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LOCAL_Error_Term = hd;
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free( a );
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return NULL;
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}
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if (IsAtomTerm(hd)) {
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xarg *na = matchKey( AtomOfTerm( hd ), a, n, def);
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if (!na)
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return NULL;
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na->used = true;
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na->tvalue = TermNil;
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continue;
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} else if (IsApplTerm( hd )) {
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Functor f = FunctorOfTerm( hd );
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if (IsExtensionFunctor(f)) {
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LOCAL_Error_TYPE = TYPE_ERROR_PARAMETER;
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LOCAL_Error_Term = hd;
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free( a );
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return NULL;
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}
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arity_t arity = ArityOfFunctor( f );
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if (arity != 1) {
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LOCAL_Error_TYPE = DOMAIN_ERROR_OUT_OF_RANGE;
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LOCAL_Error_Term = hd;
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free( a );
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return NULL;
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}
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xarg *na = matchKey( NameOfFunctor( f ), a, n, def);
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if (!na)
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return NULL;
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na->used = 1;
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na->tvalue = ArgOfTerm(1, hd);
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} else {
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LOCAL_Error_TYPE = TYPE_ERROR_PARAMETER;
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free( a );
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return NULL;
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}
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}
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return a;
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}
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static xarg *
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matchKey2(Atom key, xarg *e0, int n, const param2_t *def)
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{
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int i;
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for (i=0; i< n; i++) {
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if (!strcmp((char*)def->name, (char*)RepAtom(key)->StrOfAE)) {
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return e0;
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}
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def++;
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e0++;
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}
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return NULL;
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}
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/// Yap_ArgList2ToVector is much the same as before,
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/// but assumes parameters also have something called a
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/// scope
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xarg *
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Yap_ArgList2ToVector (Term listl, const param2_t *def, int n)
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{
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CACHE_REGS
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if (!IsPairTerm(listl) && listl != TermNil) {
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listl = MkPairTerm( listl, TermNil );
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}
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xarg *a = calloc( n , sizeof(xarg) );
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while (IsPairTerm(listl)) {
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Term hd = HeadOfTerm( listl );
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if (IsVarTerm(hd)) {
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LOCAL_Error_TYPE = INSTANTIATION_ERROR;
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free( a );
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return NULL;
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}
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if (IsAtomTerm(hd)) {
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xarg *na = matchKey2( AtomOfTerm( hd ), a, n, def);
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if (!na)
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return NULL;
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na->used = true;
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na->tvalue = TermNil;
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continue;
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} else if (IsApplTerm( hd )) {
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Functor f = FunctorOfTerm( hd );
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if (IsExtensionFunctor(f)) {
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LOCAL_Error_TYPE = TYPE_ERROR_PARAMETER;
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LOCAL_Error_Term = hd;
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free( a );
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return NULL;
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}
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arity_t arity = ArityOfFunctor( f );
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if (arity != 1) {
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LOCAL_Error_TYPE = DOMAIN_ERROR_OUT_OF_RANGE;
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LOCAL_Error_Term = hd;
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free( a );
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return NULL;
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}
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xarg *na = matchKey2( NameOfFunctor( f ), a, n, def);
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if (na) {
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na->used = 1;
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na->tvalue = ArgOfTerm(1, hd);
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}
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} else {
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LOCAL_Error_TYPE = TYPE_ERROR_PARAMETER;
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LOCAL_Error_Term = hd;
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free( a );
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return NULL;
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}
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listl = TailOfTerm(listl);
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}
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if (IsVarTerm(listl)) {
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LOCAL_Error_TYPE = INSTANTIATION_ERROR;
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free( a );
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return NULL;
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}
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if (TermNil != listl) {
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LOCAL_Error_TYPE = TYPE_ERROR_LIST;
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LOCAL_Error_Term = listl;
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free( a );
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return NULL;
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}
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return a;
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}
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