384 lines
9.8 KiB
C
384 lines
9.8 KiB
C
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#include "Yap.h"
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#include "py4yap.h"
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#include <frameobject.h>
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void YAPPy_ThrowError__(const char *file, const char *function, int lineno,
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yap_error_number type, term_t where, ...) {
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va_list ap;
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char tmpbuf[MAXPATHLEN];
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YAP_Term wheret = YAP_GetFromSlot(where);
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PyObject *ptype;
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if ((ptype = PyErr_Occurred()) == NULL) {
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PyErr_Print();
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}
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va_start(ap, where);
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char *format = va_arg(ap, char *);
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if (format != NULL) {
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#if HAVE_VSNPRINTF
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(void)vsnprintf(tmpbuf, MAXPATHLEN - 1, format, ap);
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#else
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(void)vsprintf(tnpbuf, format, ap);
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#endif
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// fprintf(stderr, "warning: ");
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Yap_ThrowError__(file, function, lineno, type, wheret, tmpbuf);
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} else {
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// Yap_ThrowError__(file, function, lineno, type, wheret);
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}
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}
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static Term repr_term(PyObject *pVal) {
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Term t = MkAddressTerm(pVal);
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return Yap_MkApplTerm(FunctorObj, 1, &t);
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}
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foreign_t assign_to_symbol(term_t t, PyObject *e);
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foreign_t assign_to_symbol(term_t t, PyObject *e) {
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char *s = NULL;
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if (!PL_get_atom_chars(t, &s)) {
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return false;
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}
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PyObject *dic;
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if (!lookupPySymbol(s, NULL, &dic))
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dic = py_Main;
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Py_INCREF(e);
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return PyObject_SetAttrString(dic, s, e) == 0;
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}
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static Term python_to_term__(PyObject *pVal) {
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if (pVal == Py_None) {
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// fputs("<<*** ",stderr);Yap_DebugPlWrite(YAP_GetFromSlot(t)); fputs("
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// >>***\n",stderr);
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//return YAP_MkVarTerm();
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// fputs("<<*** ",stderr);Yap_DebugPlWrite(YAP_GetFromSlot(t)); fputs("
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return MkAtomTerm(Yap_LookupAtom("none"));
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// >>***\n",stderr);
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} else if (PyBool_Check(pVal)) {
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if(PyObject_IsTrue(pVal)) return TermTrue;
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return TermFalse;
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} else if (PyLong_Check(pVal)) {
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return MkIntegerTerm(PyLong_AsLong(pVal));
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#if PY_MAJOR_VERSION < 3
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} else if (PyInt_Check(pVal)) {
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return MkIntegerTerm(PyInt_AsLong(pVal));
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#endif
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} else if (PyFloat_Check(pVal)) {
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return MkFloatTerm(PyFloat_AsDouble(pVal));
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} else if (PyComplex_Check(pVal)) {
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Term t[2];
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t[0] = MkFloatTerm(PyComplex_RealAsDouble(pVal));
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t[1] = MkFloatTerm(PyComplex_ImagAsDouble(pVal));
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return Yap_MkApplTerm(FunctorI, 2, t);
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}
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else if (PyUnicode_Check(pVal)) {
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#if PY_MAJOR_VERSION < 3
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size_t sz = PyUnicode_GetSize(pVal) + 1;
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wchar_t *s = malloc(sizeof(wchar_t) * sz);
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sz = PyUnicode_AsWideChar((PyUnicodeObject *)pVal, a, sz - 1);
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free(ptr);
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#else
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const char *s = PyUnicode_AsUTF8(pVal);
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#endif
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#if 0
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if (false && Yap_AtomInUse(s))
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rc = rc && PL_unify_atom_chars(t, s);
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else
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#endif
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if (pyStringToString)
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return MkStringTerm(s);
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else
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return MkAtomTerm(Yap_LookupAtom(s));
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}
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else if (PyByteArray_Check(pVal)) {
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return MkStringTerm(PyByteArray_AsString(pVal));
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#if PY_MAJOR_VERSION < 3
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}
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else if (PyString_Check(pVal)) {
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return MkStringTerm(PyString_AsString(pVal));
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#endif
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}
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else if (PyTuple_Check(pVal)) {
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Py_ssize_t sz = PyTuple_Size(pVal);
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const char *s;
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s = Py_TYPE(pVal)->tp_name;
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if (s == NULL)
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s = "t";
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if (sz == 0) {
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return MkAtomTerm(YAP_LookupAtom(Py_TYPE(pVal)->tp_name));
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}
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else {
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Functor f = Yap_MkFunctor(Yap_LookupAtom(s), sz);
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Term t = Yap_MkNewApplTerm(f, sz);
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long i;
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CELL *ptr = RepAppl(t) + 1;
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for (i = 0; i < sz; i++) {
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PyObject *p = PyTuple_GetItem(pVal, i);
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if (p == NULL) {
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PyErr_Clear();
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return false;
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}
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*ptr++ = python_to_term__(p);
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}
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return t;
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}
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// PL_reset_term_refs(to);
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// fputs(" ||*** ",stderr); Yap_DebugPlWrite(YAP_GetFromSlot(t)); fputs("
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// ||***\n",stderr);
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}
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else if (PyList_Check(pVal)) {
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Py_ssize_t i, sz = PyList_GET_SIZE(pVal);
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if (sz == 0)
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return repr_term(pVal);
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Term t = TermNil;
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for (i = sz; i > 0; ) {
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-- i;
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PyObject *p = PyList_GetItem(pVal, i);
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if (p == NULL) {
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PyErr_Clear();
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return false;
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}
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if (!python_to_term__(p))
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return false;
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t = MkPairTerm(python_to_term__(p), t);
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}
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return t;
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}
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else if (PyDict_Check(pVal)) {
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Py_ssize_t pos = 0, tot = PyDict_Size(pVal);
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PyObject *key, *value;
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Term f, *opt = &f, t, to;
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if (tot == 0)
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return MkAtomTerm( Yap_LookupAtom("{}"));
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while (PyDict_Next(pVal, &pos, &key, &value)) {
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Term t0[2];
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t0[0] = python_to_term__(key);
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t0[1] = python_to_term__(value);
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to = Yap_MkApplTerm(FunctorModule, 2, t0);
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if (pos < tot) {
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t = Yap_MkNewApplTerm(FunctorComma, 2);
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CELL *pt = RepAppl(t) + 1;
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pt[0] = to;
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*opt = t;
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opt = pt+1;
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} else {
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if (pos == 0) {
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return repr_term(pVal);
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}
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*opt = to;
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break;
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}
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}
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return Yap_MkApplTerm(FunctorBraces, 1, &f);
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}
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return repr_term(pVal);
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}
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foreign_t python_to_term(PyObject *pVal, term_t t) {
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Term o = python_to_term__(pVal);
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return YAP_Unify(o,YAP_GetFromSlot(t));
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}
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// extern bool Yap_do_low_level_trace;
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X_API YAP_Term pythonToYAP(PyObject *pVal) {
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// Yap_do_low_level_trace=1;
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/* fputs(" *** ", stderr); */
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/* PyObject_Print(pVal, stderr, 0); */
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/* fputs("***>>\n", stderr); */
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if (pVal == NULL)
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Yap_ThrowError(SYSTEM_ERROR_INTERNAL, 0, NULL);
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yhandle_t h0 = Yap_CurrentHandle();
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Term t = python_to_term__(pVal);
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/* fputs("<< *** ", stderr); */
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/* Yap_DebugPlWrite(t); */
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/* fputs(" ***\n", stderr); */
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// Py_DECREF(pVal);
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Yap_CloseHandles(h0);
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return t;
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}
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PyObject *py_Local, *py_Global;
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/**
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* assigns the Python RHS to a Prolog term LHS, ie LHS = RHS
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*
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* @param root Python environment
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* @param t left hand side, in Prolog, may be
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* - a Prolog variable, exports the term to Prolog, A <- RHS
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* - Python variable A, A <- RHS
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* - Python variable $A, A <- RHS
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* - Python string "A", A <- RHS
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* - Python array range
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* @param e the right-hand side
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*
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* @return -1 on failure.
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*
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* Note that this is an auxiliary routine to the Prolog
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*python_assign.
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*/
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bool python_assign(term_t t, PyObject *exp, PyObject *context) {
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bool rc = true;
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PyErr_Print();
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term_t inp = Yap_CurrentHandle();
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context = find_obj(context, t, false);
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// Yap_DebugPlWriteln(yt);
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switch (PL_term_type(t)) {
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case PL_VARIABLE: {
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if (context == NULL) // prevent a.V= N*N[N-1]
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PL_reset_term_refs(inp);
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rc = python_to_term(exp, t);
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break;
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}
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case PL_STRING: {
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char *s = NULL;
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size_t l;
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PL_get_string_chars(t, &s,&l);
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if (!context)
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context = py_Main;
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if (PyObject_SetAttrString(context, s, exp) == 0) {
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PL_reset_term_refs(inp);
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;
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rc = true;
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} else {
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PyErr_Print();
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PL_reset_term_refs(inp);
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rc = false;
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}
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break;
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}
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case PL_ATOM: {
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char *s = NULL;
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PL_get_atom_chars(t, &s);
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if (!context)
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context = py_Main;
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if (PyObject_SetAttrString(context, s, exp) == 0){
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rc = true;
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} else {
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rc = false;
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}
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break;
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}
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case PL_INTEGER:
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case PL_FLOAT:
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// domain or type erro?
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rc = false;
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break;
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default: {
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term_t tail = PL_new_term_ref(), arg = PL_new_term_ref();
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size_t len, i;
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if (PL_is_pair(t)) {
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if (PL_skip_list(t, tail, &len) &&
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PL_get_nil(tail)) { // true list
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if (PySequence_Check(exp) && PySequence_Length(exp) == len)
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for (i = 0; i < len; i++) {
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PyObject *p;
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if (!PL_get_list(t, arg, t)) {
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p = Py_None;
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rc = false;
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} else {
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if ((p = PySequence_GetItem(exp, i)) == NULL)
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p = Py_None;
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rc = rc && python_assign(arg, p, context);
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}
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}
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} else {
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while(PL_is_pair(t)) {
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context = find_obj(context, t, false);
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}
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rc = python_assign(t, exp, context);
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}
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} else {
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functor_t fun;
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if (!PL_get_functor(t, &fun)) {
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rc = false;
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}
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if (fun == FUNCTOR_sqbrackets2) {
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// tail is the object o
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if (!PL_get_arg(2, t, tail)) {
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rc = false;
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} else {
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PyObject *o = term_to_python(tail, true, context, false);
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// t now refers to the index
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if (!PL_get_arg(1, t, t) || !PL_get_list(t, t, tail) ||
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!PL_get_nil(tail)) {
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rc = false;
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} else {
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PyObject *i = term_to_python(t, true, NULL, false);
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// check numeric
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if (PySequence_Check(o) && PyLong_Check(i)) {
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long int j;
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j = PyLong_AsLong(i);
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rc = PySequence_SetItem(o, j, exp) == 0;
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}
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#if PY_MAJOR_VERSION < 3
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if (PySequence_Check(o) && PyInt_Check(i)) {
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long int j;
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j = PyInt_AsLong(i);
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szzb rc = PySequence_SetItem(o, i, exp) == 0;
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} else
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#endif
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if (PyDict_Check(o)) {
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if (PyDict_SetItem(o, i, exp) == 0) {
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PL_reset_term_refs(inp);
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;
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rc = true;
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}
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}
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if (PyObject_SetAttr(o, i, exp) == 0) {
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PL_reset_term_refs(inp);
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;
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rc = true;
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}
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}
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}
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} else {
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atom_t s;
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int n, i;
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PL_get_name_arity(t, &s, &n);
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PyObject *o = term_to_python(t, true, context, true);
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PyErr_Print();
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if (PySequence_Check(o) && PySequence_Length(o) == n) {
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for (i = 1; i <= n; i++) {
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PyObject *p;
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if (!PL_get_arg(i, t, arg)) {
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o = NULL;
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p = Py_None;
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}
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if ((p = PySequence_GetItem(exp, i - 1)) == NULL)
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p = Py_None;
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rc = python_assign(arg, p, NULL);
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}
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}
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}
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}
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}
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}
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PyErr_Print();
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PL_reset_term_refs(inp);
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return rc;
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}
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