692 lines
17 KiB
C
692 lines
17 KiB
C
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#include "python.h"
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static int conj_size(term_t source) {
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if (PL_is_functor(source, FUNCTOR_comma2)) {
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term_t a1 = PL_new_term_ref(), a2 = PL_new_term_ref();
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if (PL_get_arg(1, source, a1) <= 0 || PL_get_arg(2, source, a2) <= 0)
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return -1;
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return conj_size(a1) + conj_size(a2);
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}
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return 1;
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}
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static int conj_copy(term_t target, PyObject *e, int pos) {
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if (PL_is_functor(target, FUNCTOR_comma2)) {
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term_t a1 = PL_new_term_ref(), a2 = PL_new_term_ref();
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if (PL_get_arg(1, target, a1) <= 0 || PL_get_arg(2, target, a2) <= 0)
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return -1;
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int p1 = conj_copy(a1, e, pos);
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return conj_copy(a2, e, p1);
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} else {
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assign_python(py_Main, target, PyTuple_GetItem(e, pos));
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return pos + 1;
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}
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}
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static foreign_t python_f(term_t tmod, term_t fname, term_t tf) {
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char *s;
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size_t len;
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PyObject *pF, *pModule;
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/* if an atom, fetch again */
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if (PL_is_atom(tmod)) {
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PyObject *pName;
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if (!PL_get_nchars(fname, &len, &s, CVT_ALL | CVT_EXCEPTION)) {
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return FALSE;
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}
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#if PY_MAJOR_VERSION < 3
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pName = PyString_FromString(s);
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#else
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pName = PyUnicode_FromString(s);
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#endif
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if (pName == NULL) {
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return FALSE;
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}
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pModule = PyImport_Import(pName);
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} else if (!(pModule = term_to_python(tmod, true)))
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return FALSE;
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if (!PL_get_nchars(fname, &len, &s, CVT_ALL | CVT_EXCEPTION)) {
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return FALSE;
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}
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pF = PyObject_GetAttrString(pModule, s);
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PyErr_Print();
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Py_DECREF(pModule);
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if (pF == NULL || !PyCallable_Check(pF)) {
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return FALSE;
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}
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return python_to_ptr(pF, tf);
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}
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static foreign_t python_o(term_t tmod, term_t fname, term_t tf) {
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char *s;
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size_t len;
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PyObject *pO, *pModule;
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pModule = term_to_python(tmod, true);
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if (!PL_get_nchars(fname, &len, &s, CVT_ALL | CVT_EXCEPTION)) {
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return FALSE;
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}
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pO = PyObject_GetAttrString(pModule, s);
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if (pO == NULL) {
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return FALSE;
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}
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return python_to_ptr(pO, tf);
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}
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static foreign_t python_len(term_t tobj, term_t tf) {
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Py_ssize_t len;
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PyObject *o;
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o = term_to_python(tobj, true);
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if (o == NULL)
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return FALSE;
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len = PyObject_Length(o);
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return PL_unify_int64(tf, len);
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}
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static foreign_t python_dir(term_t tobj, term_t tf) {
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PyObject *dir;
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PyObject *o;
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o = term_to_python(tobj, true);
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if (o == NULL)
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return FALSE;
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dir = PyObject_Dir(o);
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return python_to_ptr(dir, tf);
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}
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static foreign_t python_index(term_t tobj, term_t tindex, term_t val) {
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PyObject *i;
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PyObject *o;
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PyObject *f;
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o = term_to_python(tobj, true);
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if (o == NULL)
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return false;
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if (!PySequence_Check(o))
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return false;
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i = term_to_python(tindex, true);
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if (i == NULL)
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return false;
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#if PY_MAJOR_VERSION < 3
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f = PyObject_CallMethodObjArgs(o, PyString_FromString("getitem"), i);
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#else
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f = PyObject_CallMethodObjArgs(o, PyUnicode_FromString("getitem"), i);
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#endif
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return python_to_ptr(f, val);
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}
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static foreign_t python_is(term_t tobj, term_t tf) {
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PyObject *o;
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o = term_to_python(tobj, true);
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if (!o)
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return FALSE;
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return python_to_ptr(o, tf);
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}
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static foreign_t python_assign_item(term_t parent, term_t indx, term_t tobj) {
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PyObject *pF, *pI;
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PyObject *p;
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// get Scope ...
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pI = term_to_python(indx, true);
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// got Scope.Exp
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// get Scope ...
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p = term_to_python(parent, true);
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// Exp
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// get Scope ...
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pF = term_to_python(parent, true);
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// Exp
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if (!pI || !p) {
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return false;
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} else if (PyObject_SetItem(p, pI, pF)) {
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PyErr_Print();
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return FALSE;
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}
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Py_DecRef(pI);
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Py_DecRef(p);
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return true;
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}
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/** assign a tuple to something:
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*/
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static foreign_t python_assign_tuple(term_t t_lhs, term_t t_rhs) {
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PyObject *e = term_to_python(t_rhs, true);
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Py_ssize_t sz;
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functor_t f;
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if (!e || !PyTuple_Check(e)) {
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return -1;
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}
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sz = PyTuple_Size(e);
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switch (PL_term_type(t_lhs)) {
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case PL_VARIABLE:
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return PL_unify(t_lhs, t_rhs);
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case PL_ATOM:
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return assign_python(py_Main, t_rhs, e);
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case PL_TERM:
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if (PL_get_functor(t_lhs, &f)) {
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term_t targ = PL_new_term_ref();
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// assign a tuple to a tuple
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if (PL_functor_name(f) == ATOM_t && ((sz = PL_functor_arity(f)))) {
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Py_ssize_t i;
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for (i = 0; i < sz; i++) {
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PL_get_arg(i + 1, t_lhs, targ);
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assign_python(py_Main, targ, PyTuple_GetItem(e, i));
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}
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} else if (PL_functor_name(f) == ATOM_comma) {
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int n = conj_size(t_lhs);
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if (n != sz)
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return -1;
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return conj_copy(t_lhs, e, 0);
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} else if (PL_functor_name(f) == ATOM_dot) { // vectors
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size_t len;
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term_t tail = PL_new_term_ref();
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PL_skip_list(t_lhs, tail, &len);
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if (!PL_get_nil(tail))
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return -1;
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term_t arg = tail;
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size_t i;
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for (i = 0; i < len; i++) {
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if (!PL_get_list(t_rhs, arg, t_rhs)) {
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return -1;
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}
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if (assign_python(py_Main, arg, PyTuple_GetItem(e, i)) < 0)
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return -1;
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}
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}
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}
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}
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return -1;
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}
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static foreign_t python_item(term_t parent, term_t indx, term_t tobj) {
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PyObject *pF, *pI;
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PyObject *p;
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// get Scope ...
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pI = term_to_python(indx, true);
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// got Scope.Exp
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// get Scope ...
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p = term_to_python(parent, true);
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// Exp
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if (!pI || !p) {
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return false;
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} else if ((pF = PyObject_GetItem(p, pI)) == NULL) {
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PyErr_Print();
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return FALSE;
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}
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Py_DecRef(pI);
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Py_DecRef(p);
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return address_to_term(pF, tobj);
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}
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static foreign_t python_slice(term_t parent, term_t indx, term_t tobj) {
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PyObject *pF, *pI;
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PyObject *p;
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// get Scope ...
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pI = term_to_python(indx, true);
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// got Scope.Exp
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// get Scope ...
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p = term_to_python(parent, true);
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// Exp
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if (!pI || !p) {
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return false;
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} else if ((pF = PySequence_GetSlice(p, 0, 0)) == NULL) {
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PyErr_Print();
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return FALSE;
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}
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Py_DecRef(pI);
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Py_DecRef(p);
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return address_to_term(pF, tobj);
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}
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static foreign_t python_apply(term_t tin, term_t targs, term_t keywds,
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term_t tf) {
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PyObject *pF;
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PyObject *pArgs, *pKeywords;
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PyObject *pValue;
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int i, arity;
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atom_t aname;
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foreign_t out;
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term_t targ = PL_new_term_ref();
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pF = term_to_python(tin, true);
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if (pF == NULL) {
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return false;
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}
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if (PL_is_atom(targs)) {
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pArgs = NULL;
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} else {
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if (!PL_get_name_arity(targs, &aname, &arity)) {
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return FALSE;
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}
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if (arity == 1 && PL_get_arg(1, targs, targ) && PL_is_variable(targ)) {
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/* ignore (_) */
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pArgs = NULL;
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} else {
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pArgs = PyTuple_New(arity);
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if (!pArgs)
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return FALSE;
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for (i = 0; i < arity; i++) {
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PyObject *pArg;
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if (!PL_get_arg(i + 1, targs, targ))
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return FALSE;
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pArg = term_to_python(targ, true);
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if (pArg == NULL)
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return FALSE;
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/* pArg reference stolen here: */
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PyTuple_SetItem(pArgs, i, pArg);
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}
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}
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}
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if (PL_is_atom(keywds)) {
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pKeywords = NULL;
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} else {
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pKeywords = term_to_python(keywds, true);
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}
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if (PyCallable_Check(pF)) {
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pValue = PyEval_CallObjectWithKeywords(pF, pArgs, pKeywords);
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// PyObject_Print(pF,stderr,0);fprintf(stderr, "\n");
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// PyObject_Print(pArgs,stderr,0);fprintf(stderr, " ");
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// PyObject_Print(pKeywords,stderr,0);fprintf(stderr, "\n");
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if (!pValue)
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PyErr_Print();
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else
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Py_IncRef(pValue);
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} else if (pArgs == NULL) {
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pValue = pF;
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if (pF) {
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Py_IncRef(pValue);
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}
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} else {
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PyErr_Print();
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return FALSE;
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}
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if (pArgs)
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Py_DECREF(pArgs);
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Py_DECREF(pF);
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if (pValue == NULL)
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return FALSE;
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out = python_to_ptr(pValue, tf);
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return out;
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}
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static foreign_t python_assign(term_t name, term_t exp) {
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PyObject *e = term_to_python(exp, true);
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if (e == NULL)
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return FALSE;
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return assign_python(py_Main, name, e) >= 0;
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}
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static foreign_t python_assign_field(term_t source, term_t name, term_t exp) {
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PyObject *e = term_to_python(exp, true), *root = term_to_python(source, true);
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if (e == NULL)
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return FALSE;
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return assign_python(root, name, e) >= 0;
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}
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static foreign_t python_builtin_eval(term_t caller, term_t dict, term_t out) {
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PyObject *pI, *pArgs, *pOut;
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PyObject *env;
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atom_t name;
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char *s;
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int i, arity;
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term_t targ = PL_new_term_ref();
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if ((env = py_Builtin) == NULL) {
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// no point in even trying
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return false;
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}
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if (PL_get_name_arity(caller, &name, &arity)) {
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if (!(s = PL_atom_chars(name)))
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return false;
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if ((pI = PyObject_GetAttrString(env, s)) == NULL) {
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PyErr_Print();
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return false;
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}
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} else {
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// Prolog should make sure this never happens.
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return false;
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}
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pArgs = PyTuple_New(arity);
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for (i = 0; i < arity; i++) {
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PyObject *pArg;
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if (!PL_get_arg(i + 1, caller, targ))
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return FALSE;
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/* ignore (_) */
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if (i == 0 && PL_is_variable(targ)) {
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pArg = Py_None;
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} else {
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pArg = term_to_python(targ, true);
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if (pArg == NULL)
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return FALSE;
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}
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/* pArg reference stolen here: */
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if (PyTuple_SetItem(pArgs, i, pArg)) {
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PyErr_Print();
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return false;
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}
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}
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pOut = PyObject_CallObject(pI, pArgs);
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Py_DECREF(pArgs);
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Py_DECREF(pI);
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if (pOut == NULL) {
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PyErr_Print();
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return false;
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}
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return python_to_ptr(pOut, out);
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}
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static foreign_t python_access(term_t obj, term_t f, term_t out) {
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PyObject *o = term_to_python(obj, true), *pValue, *pArgs, *pF;
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atom_t name;
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char *s;
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int i, arity;
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term_t targ = PL_new_term_ref();
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if (o == NULL)
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return FALSE;
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if (PL_is_atom(f)) {
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if (!PL_get_atom_chars(f, &s))
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return FALSE;
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if ((pValue = PyObject_GetAttrString(o, s)) == NULL) {
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PyErr_Print();
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return FALSE;
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}
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return python_to_term(pValue, out);
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}
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if (!PL_get_name_arity(f, &name, &arity)) {
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return FALSE;
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}
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/* follow chains of the form a.b.c.d.e() */
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while (name == ATOM_dot && arity == 2) {
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term_t tleft = PL_new_term_ref();
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PyObject *lhs;
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if (!PL_get_arg(1, f, tleft))
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return FALSE;
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lhs = term_to_python(tleft, true);
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if ((o = PyObject_GetAttr(o, lhs)) == NULL) {
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PyErr_Print();
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return FALSE;
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}
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if (!PL_get_arg(2, f, f))
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return FALSE;
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if (!PL_get_name_arity(f, &name, &arity)) {
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return FALSE;
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}
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}
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s = PL_atom_chars(name);
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if (!s)
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return false;
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if ((pF = PyObject_GetAttrString(o, s)) == NULL) {
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PyErr_Print();
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return FALSE;
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}
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pArgs = PyTuple_New(arity);
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for (i = 0; i < arity; i++) {
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PyObject *pArg;
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if (!PL_get_arg(i + 1, f, targ))
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return FALSE;
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/* ignore (_) */
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if (i == 0 && PL_is_variable(targ)) {
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pArgs = Py_None;
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}
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pArg = term_to_python(targ, true);
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if (pArg == NULL)
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return FALSE;
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/* pArg reference stolen here: */
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PyTuple_SetItem(pArgs, i, pArg);
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}
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pValue = PyObject_CallObject(pF, pArgs);
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Py_DECREF(pArgs);
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Py_DECREF(pF);
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if (pValue == NULL) {
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return FALSE;
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}
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return python_to_term(pValue, out);
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}
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static foreign_t python_field(term_t parent, term_t att, term_t tobj) {
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PyObject *pF;
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atom_t name;
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char *s;
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int arity;
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if (!PL_get_name_arity(att, &name, &arity)) {
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return false;
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} else {
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PyObject *p;
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// got Scope.Exp
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// get Scope ...
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p = term_to_python(parent, true);
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// Exp
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if (!PL_get_name_arity(att, &name, &arity)) {
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return false;
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}
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s = PL_atom_chars(name);
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if (arity == 1 && !strcmp(s, "()")) {
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if (!PL_get_arg(1, att, att))
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return false;
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if (!PL_get_name_arity(att, &name, &arity)) {
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return false;
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}
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s = PL_atom_chars(name);
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}
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if (!s || !p) {
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return false;
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} else if ((pF = PyObject_GetAttrString(p, s)) == NULL) {
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PyErr_Clear();
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return FALSE;
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}
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}
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return address_to_term(pF, tobj);
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}
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static foreign_t python_main_module(term_t mod) {
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return address_to_term(py_Main, mod);
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}
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static foreign_t python_function(term_t tobj) {
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PyObject *obj = term_to_python(tobj, true);
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return PyFunction_Check(obj);
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}
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foreign_t python_builtin(term_t out) {
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return address_to_term(py_Builtin, out);
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}
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static foreign_t python_run_file(term_t file) {
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char *s;
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size_t len;
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char si[256];
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s = si;
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if (PL_get_nchars(file, &len, &s, CVT_ALL | CVT_EXCEPTION)) {
|
|
#if PY_MAJOR_VERSION < 3
|
|
PyObject *PyFileObject = PyFile_FromString(si, "r");
|
|
PyRun_SimpleFileEx(PyFile_AsFile(PyFileObject), "test.py", 1);
|
|
#else
|
|
FILE *f = fopen(s, "r");
|
|
if (f == NULL)
|
|
return false;
|
|
PyRun_SimpleFileEx(f, s, 1);
|
|
#endif
|
|
return TRUE;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static foreign_t python_run_command(term_t cmd) {
|
|
char *s;
|
|
size_t len;
|
|
char si[256];
|
|
s = si;
|
|
if (PL_get_nchars(cmd, &len, &s, CVT_ALL | CVT_EXCEPTION)) {
|
|
PyRun_SimpleString(s);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static foreign_t python_run_script(term_t cmd, term_t fun) {
|
|
char si[256], sf[256];
|
|
size_t len = 255, len1 = 255;
|
|
PyObject *pName, *pModule, *pFunc;
|
|
PyObject *pArgs = NULL, *pValue;
|
|
char *s;
|
|
|
|
s = si;
|
|
if (PL_get_nchars(cmd, &len, &s, CVT_ALL | CVT_EXCEPTION) &&
|
|
(s = sf) != NULL &&
|
|
PL_get_nchars(fun, &len1, &s, CVT_ALL | CVT_EXCEPTION)) {
|
|
|
|
#if PY_MAJOR_VERSION < 3
|
|
pName = PyString_FromString("rbm");
|
|
#else
|
|
// asssumes UTF-8
|
|
pName = PyUnicode_FromString("rbm");
|
|
#endif
|
|
/* Error checking of pName left out */
|
|
|
|
pModule = PyImport_Import(pName);
|
|
Py_DECREF(pName);
|
|
|
|
if (pModule != NULL) {
|
|
pFunc = PyObject_GetAttrString(pModule, sf);
|
|
/* pFunc is a new reference */
|
|
|
|
if (pFunc && PyCallable_Check(pFunc)) {
|
|
pValue = PyObject_CallObject(pFunc, pArgs);
|
|
if (pValue != NULL) {
|
|
Py_DECREF(pValue);
|
|
} else {
|
|
Py_DECREF(pFunc);
|
|
Py_DECREF(pModule);
|
|
PyErr_Print();
|
|
fprintf(stderr, "Call failed\n");
|
|
return false;
|
|
}
|
|
} else {
|
|
if (PyErr_Occurred())
|
|
PyErr_Print();
|
|
fprintf(stderr, "Cannot find function \"%s\"\n", sf);
|
|
}
|
|
Py_XDECREF(pFunc);
|
|
Py_DECREF(pModule);
|
|
} else {
|
|
PyErr_Print();
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static foreign_t python_export(term_t t, term_t pl) {
|
|
foreign_t rc = false;
|
|
if (PL_is_functor(t, FUNCTOR_pointer1)) {
|
|
void *ptr;
|
|
term_t targ = PL_new_term_ref();
|
|
|
|
if (!PL_get_arg(1, t, targ))
|
|
return false;
|
|
if (!PL_get_pointer(targ, &ptr))
|
|
return false;
|
|
Py_INCREF((PyObject *)ptr);
|
|
/* return __main__,s */
|
|
rc = python_to_term((PyObject *)ptr, pl);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int python_import(term_t mname, term_t mod) {
|
|
PyObject *pName, *pModule;
|
|
term_t arg = PL_new_term_ref();
|
|
char s0[MAXPATHLEN], *s = s0;
|
|
|
|
while (true) {
|
|
size_t len;
|
|
|
|
len = (MAXPATHLEN - 1) - (s - s0);
|
|
if (PL_is_pair(mname)) {
|
|
char *sa;
|
|
if (!PL_get_arg(1, mname, arg) || !PL_get_atom_chars(arg, &sa) ||
|
|
!PL_get_arg(2, mname, mname))
|
|
return false;
|
|
s = stpcpy(s, sa);
|
|
*s++ = '.';
|
|
} else if (!PL_get_nchars(mname, &len, &s,
|
|
CVT_ALL | CVT_EXCEPTION | REP_UTF8)) {
|
|
return false;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
#if PY_MAJOR_VERSION < 3
|
|
pName = PyString_FromString(s0);
|
|
#else
|
|
pName = PyUnicode_FromString(s0);
|
|
#endif
|
|
if (pName == NULL) {
|
|
return false;
|
|
}
|
|
pModule = PyImport_Import(pName);
|
|
Py_DECREF(pName);
|
|
if (pModule == NULL) {
|
|
#if EXTRA_MESSSAGES
|
|
if (PyErr_Occurred())
|
|
PyErr_Print();
|
|
PyErr_Clear();
|
|
#endif
|
|
return FALSE;
|
|
}
|
|
ActiveModules[active_modules++] = pModule;
|
|
return python_to_ptr(pModule, mod);
|
|
}
|
|
|
|
install_t install_pypreds(void) {
|
|
PL_register_foreign("python_builtin_eval", 3, python_builtin_eval, 0);
|
|
PL_register_foreign("python_builtin", 1, python_builtin, 0);
|
|
PL_register_foreign("python_import", 2, python_import, 0);
|
|
PL_register_foreign("python_f", 3, python_f, 0);
|
|
PL_register_foreign("python_o", 3, python_o, 0);
|
|
PL_register_foreign("python_len", 2, python_len, 0);
|
|
PL_register_foreign("python_is", 2, python_is, 0);
|
|
PL_register_foreign("python_dir", 2, python_dir, 0);
|
|
PL_register_foreign("python_apply", 4, python_apply, 0);
|
|
PL_register_foreign("python_index", 3, python_index, 0);
|
|
PL_register_foreign("python_field", 3, python_field, 0);
|
|
PL_register_foreign("python_assign", 2, python_assign, 0);
|
|
PL_register_foreign("python_assign_field", 3, python_assign_field, 0);
|
|
PL_register_foreign("python_assign_tuple", 2, python_assign_tuple, 0);
|
|
PL_register_foreign("python_export", 2, python_export, 0);
|
|
PL_register_foreign("python_function", 1, python_function, 0);
|
|
PL_register_foreign("python_slice", 4, python_slice, 0);
|
|
PL_register_foreign("python_item", 3, python_item, 0);
|
|
PL_register_foreign("python_assign_item", 3, python_assign_item, 0);
|
|
PL_register_foreign("python_run_file", 1, python_run_file, 0);
|
|
PL_register_foreign("python_run_command", 1, python_run_command, 0);
|
|
PL_register_foreign("python_run_script", 2, python_run_script, 0);
|
|
PL_register_foreign("python_main_module", 1, python_main_module, 0);
|
|
PL_register_foreign("python_import", 2, python_import, 0);
|
|
PL_register_foreign("python_access", 3, python_access, 0);
|
|
}
|