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yap-6.3/C/args.c
Vítor Santos Costa 6f1b5fbef9 thread compilation
2016-02-22 13:01:09 +00:00

235 lines
6.1 KiB
C

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