152 lines
3.8 KiB
C
152 lines
3.8 KiB
C
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#include "py4yap.h"
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static foreign_t array_to_python_list(term_t addr, term_t type, term_t szt,
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term_t py) {
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void *src;
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Py_ssize_t sz, i;
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int is_float;
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if (!PL_get_pointer(addr, &src) || !PL_get_bool(type, &is_float) ||
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!PL_get_intptr(szt, &sz))
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return false;
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PyObject *list = PyList_New(sz);
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if (!list)
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return false;
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if (is_float) {
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double *v = (double *)src;
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for (i = 0; i < sz; i++) {
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PyObject *x = PyFloat_FromDouble(v[i]);
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PyList_SET_ITEM(list, i, x);
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}
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} else {
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YAP_Int *v = (YAP_Int *)src;
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for (i = 0; i < sz; i++) {
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PyObject *x = PyFloat_FromDouble(v[i]);
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PyList_SET_ITEM(list, i, x);
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}
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}
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if (PL_is_variable(py)) {
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return address_to_term(list, py);
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}
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return assign_to_symbol(py, list);
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}
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static foreign_t array_to_python_tuple(term_t addr, term_t type, term_t szt,
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term_t py) {
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void *src;
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Py_ssize_t sz, i;
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int is_float;
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if (!PL_get_pointer(addr, &src) || !PL_get_bool(type, &is_float) ||
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!PL_get_intptr(szt, &sz))
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return false;
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PyObject *list = PyTuple_New(sz);
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if (!list)
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return false;
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if (is_float) {
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double *v = (double *)src;
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for (i = 0; i < sz; i++) {
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PyObject *x;
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x = PyFloat_FromDouble(v[i]);
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if (PyTuple_SetItem(list, i, x)) {
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PyErr_Print();
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return FALSE;
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}
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}
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} else {
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int32_t *v = (int32_t *)src;
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PyObject *x;
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for (i = 0; i < sz; i++) {
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#if PY_MAJOR_VERSION < 3
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x = PyInt_FromLong(v[i]);
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#else
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x = PyLong_FromLong(v[i]);
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#endif
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if (PyTuple_SetItem(list, i, x)) {
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PyErr_Print();
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return FALSE;
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}
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}
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}
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if (PL_is_variable(py)) {
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return address_to_term(list, py);
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}
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return assign_to_symbol(py, list);
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}
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static foreign_t array_to_python_view(term_t addr, term_t type, term_t szt,
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term_t colt, term_t py) {
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void *src;
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Py_ssize_t sz, rows;
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int is_float;
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Py_ssize_t shape[2];
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if (!PL_get_pointer(addr, &src) || !PL_get_bool(type, &is_float) ||
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!PL_get_intptr(szt, &sz) || !PL_get_intptr(colt, &rows))
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return false;
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Py_buffer buf;
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buf.buf = src;
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if (is_float) {
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buf.len = sz * sizeof(double);
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buf.itemsize = sizeof(double);
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} else {
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buf.len = sz * sizeof(YAP_Int);
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buf.itemsize = sizeof(YAP_Int);
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}
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buf.readonly = false;
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buf.format = NULL;
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buf.ndim = 2;
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buf.shape = shape;
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buf.strides = NULL;
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buf.suboffsets = NULL;
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PyObject *o = PyMemoryView_FromBuffer(&buf);
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if (!o) {
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PyErr_Print();
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return false;
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}
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if (PL_is_variable(py)) {
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return address_to_term(o, py);
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}
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return assign_to_symbol(py, o);
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}
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static foreign_t prolog_list_to_python_list(term_t plist, term_t pyt, term_t tlen) {
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size_t sz, i;
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PyErr_Clear();
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PyObject *pyl = term_to_python(pyt, true, NULL, true);
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term_t targ = PL_new_term_ref();
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if (PL_skip_list(plist, targ, &sz) <0 || ! PL_get_nil(targ)) {
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pyErrorAndReturn( false);
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}
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if (!PyList_Check(pyl))
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{
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pyErrorAndReturn( false);
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}
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if (sz > PyList_GET_SIZE(pyl))
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pyErrorAndReturn( false);
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for (i=0; i < sz; i++) {
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if (!PL_get_list(plist, targ, plist)) {
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pyErrorAndReturn( false);
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}
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PyObject *t = term_to_python(targ, true, NULL, true);
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PyList_SET_ITEM(pyl, i, t);
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}
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if (PL_is_variable(tlen)) {
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PL_unify_int64(tlen, sz);
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} else {
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python_assign(tlen, PyLong_FromUnsignedLong(sz), NULL);
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}
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pyErrorAndReturn( true);
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}
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install_t install_pl2pl(void) {
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PL_register_foreign("array_to_python_list", 4, array_to_python_list, 0);
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PL_register_foreign("array_to_python_tuple", 4, array_to_python_tuple, 0);
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PL_register_foreign("array_to_python_view", 5, array_to_python_view, 0);
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PL_register_foreign("prolog_list_to_python_list", 3, prolog_list_to_python_list, 0);
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}
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