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yap-6.3/C/args.c
Vitor Santos Costa d2024c1aed state
2018-06-14 11:27:43 +01:00

220 lines
6.8 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 YAP_XARGINFO(Error, Message)
xarg *Yap_ArgListToVector__(const char *file, const char *function, int lineno,
Term listl, const param_t *def, int n,
yap_error_number err) {
CACHE_REGS
xarg *a;
listl = Deref(listl);
if (IsVarTerm(listl)) {
Yap_ThrowError__(file, function, lineno, INSTANTIATION_ERROR, listl,
"while opening listl = ArgOfTerm(2, listl ,k)");
}
a = calloc(n, sizeof(xarg));
if (!IsPairTerm(listl) && listl != TermNil) {
if (IsAtomTerm(listl)) {
xarg *na = matchKey(AtomOfTerm(listl), a, n, def);
if (!na) {
Yap_ThrowError__(file, function, lineno, TYPE_ERROR_LIST, listl, "match key");
}
} else if (IsApplTerm(listl)) {
Functor f = FunctorOfTerm(listl);
if (IsExtensionFunctor(f)) {
Yap_ThrowError__(file, function, lineno, TYPE_ERROR_LIST, listl, "callable");
}
arity_t arity = ArityOfFunctor(f);
if (arity != 1) {
Yap_ThrowError__(file, function, lineno, TYPE_ERROR_LIST, listl, "bad arity");
}
xarg *na = matchKey(NameOfFunctor(f), a, n, def);
if (!na) {
Yap_ThrowError__(file, function, lineno, err, listl, "no match");
}
na->used = true;
na->tvalue = ArgOfTerm(1, listl);
} else {
Yap_ThrowError__(file, function, lineno, TYPE_ERROR_ATOM, listl, "not atom");
}
listl = MkPairTerm(listl, TermNil);
}
while (IsPairTerm(listl)) {
Term hd = HeadOfTerm(listl);
listl = TailOfTerm(listl);
if (IsVarTerm(hd)) {
Yap_ThrowError__(file, function, lineno, INSTANTIATION_ERROR, hd, "sub-element");
}
if (IsVarTerm(listl)) {
Yap_ThrowError__(file, function, lineno, INSTANTIATION_ERROR, listl, "sub-list");
}
if (IsAtomTerm(hd)) {
xarg *na = matchKey(AtomOfTerm(hd), a, n, def);
if (!na)
Yap_ThrowError__(file, function, lineno, err, hd, "bad match in list");
na->used = true;
na->tvalue = TermNil;
continue;
} else if (IsApplTerm(hd)) {
Functor f = FunctorOfTerm(hd);
if (IsExtensionFunctor(f)) {
Yap_ThrowError__(file, function, lineno, err, hd, "bad compound");
}
arity_t arity = ArityOfFunctor(f);
if (arity != 1) {
Yap_ThrowError__(file, function, lineno, DOMAIN_ERROR_OUT_OF_RANGE, hd,
"high arity");
}
xarg *na = matchKey(NameOfFunctor(f), a, n, def);
if (!na) {
Yap_ThrowError__(file, function, lineno, err, hd, "no match");
}
na->used = true;
na->tvalue = ArgOfTerm(1, hd);
} else {
Yap_ThrowError__(file, function, lineno, err, hd, "bad type");
}
}
if (IsVarTerm(listl)) {
Yap_ThrowError__(file, function, lineno, INSTANTIATION_ERROR, listl, "unbound");
} else if (listl != TermNil) {
Yap_ThrowError__(file, function, lineno, TYPE_ERROR_LIST, listl, "bad list");
}
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__(const char *file, const char *function, int lineno,Term listl, const param2_t *def, int n, yap_error_number err) {
CACHE_REGS
xarg *a = calloc(n, sizeof(xarg));
if (!IsPairTerm(listl) && listl != TermNil) {
if (IsVarTerm(listl)) {
Yap_ThrowError__(file, function, lineno, INSTANTIATION_ERROR, listl, "unbound");
}
if (IsAtomTerm(listl)) {
xarg *na = matchKey2(AtomOfTerm(listl), a, n, def);
if (!na) {
Yap_ThrowError__(file, function, lineno, err,
listl, "bad match");
}
}
if (IsApplTerm(listl)) {
Functor f = FunctorOfTerm(listl);
if (IsExtensionFunctor(f)) {
Yap_ThrowError__(file, function, lineno, TYPE_ERROR_PARAMETER, listl,
"bad compound");
}
arity_t arity = ArityOfFunctor(f);
if (arity != 1) {
Yap_ThrowError__(file, function, lineno, TYPE_ERROR_LIST, listl, "bad arity");
}
xarg *na = matchKey2(NameOfFunctor(f), a, n, def);
if (!na) {
Yap_ThrowError__(file, function, lineno, DOMAIN_ERROR_GENERIC_ARGUMENT,
listl, "bad match");
}
} else {
Yap_ThrowError__(file, function, lineno, TYPE_ERROR_LIST, listl, "");
}
listl = MkPairTerm(listl, TermNil);
}
while (IsPairTerm(listl)) {
Term hd = HeadOfTerm(listl);
if (IsVarTerm(hd)) {
Yap_ThrowError__(file, function, lineno, INSTANTIATION_ERROR, hd, "");
}
if (IsAtomTerm(hd)) {
xarg *na = matchKey2(AtomOfTerm(hd), a, n, def);
if (!na) {
Yap_ThrowError__(file, function, lineno, DOMAIN_ERROR_GENERIC_ARGUMENT,
hd, "bad match");
}
na->used = true;
na->tvalue = TermNil;
continue;
} else if (IsApplTerm(hd)) {
Functor f = FunctorOfTerm(hd);
if (IsExtensionFunctor(f)) {
Yap_ThrowError__(file, function, lineno, TYPE_ERROR_PARAMETER, hd, "bad compound");
}
arity_t arity = ArityOfFunctor(f);
if (arity != 1) {
Yap_ThrowError__(file, function, lineno, DOMAIN_ERROR_GENERIC_ARGUMENT,
hd, "bad arity");
}
xarg *na = matchKey2(NameOfFunctor(f), a, n, def);
if (na) {
na->used = 1;
na->tvalue = ArgOfTerm(1, hd);
} else {
Yap_ThrowError__(file, function, lineno, err,
hd, "bad key");
}
return a;
} else {
Yap_ThrowError__(file, function, lineno, INSTANTIATION_ERROR, hd, "unbound");
}
listl = TailOfTerm(listl);
}
if (IsVarTerm(listl)) {
Yap_ThrowError__(file, function, lineno, INSTANTIATION_ERROR, listl, "");
}
if (TermNil != listl) {
Yap_ThrowError__(file, function, lineno, TYPE_ERROR_LIST, listl, "");
}
return a;
}