257 lines
7.3 KiB
C
257 lines
7.3 KiB
C
|
|
#include "python.h"
|
|
|
|
static foreign_t repr_term(const char *pVal, size_t sz, term_t t) {
|
|
term_t to = PL_new_term_ref(), t1 = PL_new_term_ref();
|
|
PL_put_string_chars(t1, pVal);
|
|
PL_cons_functor(to, FUNCTOR_pointer1, t1);
|
|
Py_INCREF(pVal);
|
|
PL_reset_term_refs(to);
|
|
return PL_unify(t, to);
|
|
}
|
|
|
|
foreign_t assign_to_symbol(term_t t, PyObject *e);
|
|
|
|
/**
|
|
* assign_python assigns the Python RHS to a Prolog term LHS, ie LHS = RHS
|
|
*
|
|
* @param root Python environment
|
|
* @param t left hand side, in Prolog, may be
|
|
* - a Prolog variable, exports the term to Prolog, A <- RHS
|
|
* - Python variable A, A <- RHS
|
|
* - Python variable $A, A <- RHS
|
|
* - Python string "A", A <- RHS
|
|
* - Python array range
|
|
* @param e the right-hand side
|
|
*
|
|
* @return -1 on failure.
|
|
*
|
|
* Note that this is an auxiliary routine to the Prolog
|
|
*python_assign.
|
|
*/
|
|
int assign_python(PyObject *root, term_t t, PyObject *e) {
|
|
switch (PL_term_type(t)) {
|
|
case PL_VARIABLE:
|
|
if (python_to_ptr(e, t))
|
|
return 1;
|
|
else
|
|
return -1;
|
|
case PL_ATOM:
|
|
return assign_to_symbol(t, e);
|
|
case PL_STRING:
|
|
case PL_INTEGER:
|
|
case PL_FLOAT:
|
|
return -1;
|
|
case PL_TERM:
|
|
if (PL_is_list(t)) {
|
|
return -1;
|
|
} else {
|
|
functor_t fun;
|
|
|
|
if (!PL_get_functor(t, &fun))
|
|
return -1;
|
|
if (fun == FUNCTOR_dollar1) {
|
|
if (!PL_get_arg(1, t, t))
|
|
return -1;
|
|
return assign_to_symbol(t, e);
|
|
}
|
|
if (fun == FUNCTOR_pointer1) {
|
|
return -1;
|
|
}
|
|
if (fun == FUNCTOR_sqbrackets2) {
|
|
term_t targ = PL_new_term_ref(), trhs = PL_new_term_ref();
|
|
PyObject *lhs, *rhs;
|
|
|
|
if (!PL_get_arg(1, t, targ))
|
|
return -1;
|
|
lhs = term_to_python(targ, true);
|
|
if (!PL_get_arg(2, t, targ) || !PL_is_list(targ) ||
|
|
!PL_get_list(targ, trhs, targ))
|
|
return -1;
|
|
if (PL_is_functor(trhs, FUNCTOR_dot2)) {
|
|
Py_ssize_t left, right;
|
|
if (!PL_get_arg(1, trhs, targ))
|
|
return -1;
|
|
left = get_p_int(term_to_python(targ, true), 0);
|
|
if (!PL_get_arg(2, trhs, targ))
|
|
return -1;
|
|
right = get_p_int(term_to_python(targ, true), PyObject_Size(lhs));
|
|
if (!PySequence_Check(lhs))
|
|
return -1;
|
|
PL_reset_term_refs(targ);
|
|
return PySequence_SetSlice(lhs, left, right, e);
|
|
} else {
|
|
rhs = term_to_python(trhs, true);
|
|
PL_reset_term_refs(targ);
|
|
return PyObject_SetItem(lhs, rhs, e);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
foreign_t assign_to_symbol(term_t t, PyObject *e) {
|
|
char *s;
|
|
PyErr_Clear();
|
|
if (!PL_get_atom_chars(t, &s)) {
|
|
wchar_t *w;
|
|
atom_t at;
|
|
size_t len;
|
|
PyObject *attr;
|
|
|
|
if (!PL_get_atom(t, &at)) {
|
|
return false;
|
|
}
|
|
if (!(w = PL_atom_wchars(at, &len)))
|
|
return false;
|
|
attr = PyUnicode_FromWideChar(w, wcslen(w));
|
|
if (attr) {
|
|
return PyObject_SetAttr(py_Main, attr, e) >= 0;
|
|
} else {
|
|
PyErr_Print();
|
|
return false;
|
|
}
|
|
} else if (proper_ascii_string(s)) {
|
|
return PyObject_SetAttrString(py_Main, s, e) >= 0;
|
|
} else {
|
|
PyObject *attr = PyUnicode_DecodeLatin1(s, strlen(s), NULL);
|
|
if (!attr)
|
|
return -1;
|
|
return PyObject_SetAttr(py_Main, attr, e) >= 0;
|
|
}
|
|
}
|
|
|
|
foreign_t python_to_ptr(PyObject *pVal, term_t t) {
|
|
Py_IncRef(pVal);
|
|
return address_to_term(pVal, t);
|
|
}
|
|
|
|
foreign_t python_to_term(PyObject *pVal, term_t t) {
|
|
if (pVal == Py_None) {
|
|
return PL_unify_atom(t, ATOM_none);
|
|
}
|
|
if (PyBool_Check(pVal)) {
|
|
if (PyObject_IsTrue(pVal)) {
|
|
return PL_unify_atom(t, ATOM_true);
|
|
} else {
|
|
return PL_unify_atom(t, ATOM_false);
|
|
}
|
|
} else if (PyLong_Check(pVal)) {
|
|
return PL_unify_int64(t, PyLong_AsLong(pVal));
|
|
#if PY_MAJOR_VERSION < 3
|
|
} else if (PyInt_Check(pVal)) {
|
|
return PL_unify_int64(t, PyInt_AsLong(pVal));
|
|
#endif
|
|
} else if (PyFloat_Check(pVal)) {
|
|
return PL_unify_float(t, PyFloat_AsDouble(pVal));
|
|
} else if (PyComplex_Check(pVal)) {
|
|
bool rc;
|
|
term_t to = PL_new_term_ref(), t1 = PL_new_term_ref(),
|
|
t2 = PL_new_term_ref();
|
|
if (!PL_put_float(t1, PyComplex_RealAsDouble(pVal)) ||
|
|
!PL_put_float(t2, PyComplex_ImagAsDouble(pVal)) ||
|
|
!PL_cons_functor(to, FUNCTOR_complex2, t1, t2)) {
|
|
rc = FALSE;
|
|
} else {
|
|
rc = PL_unify(t, to);
|
|
}
|
|
PL_reset_term_refs(to);
|
|
return rc;
|
|
} else if (PyUnicode_Check(pVal)) {
|
|
atom_t tmp_atom;
|
|
|
|
#if PY_MAJOR_VERSION < 3
|
|
Py_ssize_t sz = PyUnicode_GetSize(pVal) + 1;
|
|
wchar_t *ptr = malloc(sizeof(wchar_t) * sz);
|
|
sz = PyUnicode_AsWideChar((PyUnicodeObject *)pVal, ptr, sz - 1);
|
|
#else
|
|
Py_ssize_t sz = PyUnicode_GetLength(pVal) + 1;
|
|
wchar_t *ptr = malloc(sizeof(wchar_t) * sz);
|
|
sz = PyUnicode_AsWideChar(pVal, ptr, sz);
|
|
#endif
|
|
tmp_atom = PL_new_atom_wchars(sz, ptr);
|
|
free(ptr);
|
|
return PL_unify_atom(t, tmp_atom);
|
|
} else if (PyByteArray_Check(pVal)) {
|
|
atom_t tmp_atom = PL_new_atom(PyByteArray_AsString(pVal));
|
|
return PL_unify_atom(t, tmp_atom);
|
|
#if PY_MAJOR_VERSION < 3
|
|
} else if (PyString_Check(pVal)) {
|
|
atom_t tmp_atom = PL_new_atom(PyString_AsString(pVal));
|
|
return PL_unify_atom(t, tmp_atom);
|
|
#endif
|
|
} else if (PyTuple_Check(pVal)) {
|
|
Py_ssize_t i, sz = PyTuple_Size(pVal);
|
|
functor_t f = PL_new_functor(ATOM_t, sz);
|
|
if (!PL_unify_functor(t, f))
|
|
return FALSE;
|
|
for (i = 0; i < sz; i++) {
|
|
term_t to = PL_new_term_ref();
|
|
if (!PL_unify_arg(i + 1, t, to))
|
|
return FALSE;
|
|
if (!python_to_term(PyTuple_GetItem(pVal, i), to))
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
} else if (PyList_Check(pVal)) {
|
|
term_t to = PL_new_term_ref();
|
|
Py_ssize_t i, sz = PyList_GET_SIZE(pVal);
|
|
|
|
for (i = 0; i < sz; i++) {
|
|
if (!PL_unify_list(t, to, t) ||
|
|
!python_to_term(PyList_GetItem(pVal, i), to))
|
|
return FALSE;
|
|
}
|
|
return PL_unify_nil(t);
|
|
} else if (PyDict_Check(pVal)) {
|
|
Py_ssize_t pos = 0;
|
|
term_t to = PL_new_term_ref(), ti = to;
|
|
int left = PyDict_Size(pVal);
|
|
PyObject *key, *value;
|
|
|
|
while (PyDict_Next(pVal, &pos, &key, &value)) {
|
|
term_t tkey = PL_new_term_ref(), tval = PL_new_term_ref(), tint,
|
|
tnew = PL_new_term_ref();
|
|
/* do something interesting with the values... */
|
|
if (!python_to_term(key, tkey)) {
|
|
return FALSE;
|
|
}
|
|
if (!python_to_term(value, tval)) {
|
|
return FALSE;
|
|
}
|
|
/* reuse */
|
|
tint = tkey;
|
|
if (!PL_cons_functor(tint, FUNCTOR_colon2, tkey, tval)) {
|
|
return FALSE;
|
|
}
|
|
if (--left) {
|
|
if (!PL_cons_functor(tint, FUNCTOR_comma2, tint, tnew))
|
|
return FALSE;
|
|
}
|
|
if (!PL_unify(ti, tint))
|
|
return FALSE;
|
|
ti = tnew;
|
|
}
|
|
PL_cons_functor(to, FUNCTOR_curly1, to);
|
|
return PL_unify(t, to);
|
|
} else {
|
|
PyObject *pValR = PyObject_Repr(pVal);
|
|
if (pValR == NULL)
|
|
return address_to_term(pVal, t);
|
|
Py_ssize_t sz = PyUnicode_GetSize(pValR) + 1;
|
|
#if PY_MAJOR_VERSION < 3
|
|
char *s = malloc(sizeof(char) * sz);
|
|
PyObject *us = PyUnicode_EncodeUTF8((const Py_UNICODE *)pValR, sz, NULL);
|
|
PyString_AsStringAndSize(us, &s, &sz);
|
|
foreign_t rc = repr_term(s, sz, t);
|
|
free((void *)s);
|
|
return rc;
|
|
#else
|
|
// new interface
|
|
char *s = PyUnicode_AsUTF8AndSize(pVal, &sz);
|
|
return repr_term(s, sz, t);
|
|
#endif
|
|
}
|
|
}
|