X-Git-Url: https://scm.cri.ensmp.fr/git/linpy.git/blobdiff_plain/960f0c252361dfd696359f803aae40a9b13b14a6..7b93cea1daf2889e9ee10ca9c22a1b5124404937:/linpy/_islhelper.c

diff --git a/linpy/_islhelper.c b/linpy/_islhelper.c
new file mode 100644
index 0000000..bd39df7
--- /dev/null
+++ b/linpy/_islhelper.c
@@ -0,0 +1,162 @@
+// Copyright 2014 MINES ParisTech
+//
+// This file is part of LinPy.
+//
+// LinPy is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// LinPy is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with LinPy.  If not, see <http://www.gnu.org/licenses/>.
+
+#include <Python.h>
+
+#include <isl/constraint.h>
+#include <isl/set.h>
+#include <isl/vertices.h>
+
+
+static inline int _append_pointer_to_list(void *pointer, void *user) {
+    PyObject *list, *item;
+    list = (PyObject *) user;
+    item = PyLong_FromVoidPtr(pointer);
+    if (item == NULL) {
+        return -1;
+    }
+    return PyList_Append(list, item);
+}
+
+static int _append_constraint_to_list(isl_constraint *constraint, void *user) {
+    return _append_pointer_to_list((void *) constraint, user);
+}
+
+static PyObject * isl_basic_set_constraints(PyObject *self, PyObject *args) {
+    long pointer;
+    isl_basic_set *bset;
+    PyObject *list;
+    if (!PyArg_ParseTuple(args, "l", &pointer)) {
+        return NULL;
+    }
+    bset = (isl_basic_set *) pointer;
+    list = PyList_New(0);
+    if (list == NULL) {
+        return NULL;
+    }
+    if (isl_basic_set_foreach_constraint(bset, _append_constraint_to_list, list) == -1) {
+        PyErr_SetString(PyExc_RuntimeError,
+            "an error occurred in isl_basic_set_foreach_constraint");
+        Py_DECREF(list);
+        return NULL;
+    }
+    return list;
+}
+
+static int _append_basic_set_to_list(isl_basic_set *bset, void *user) {
+    return _append_pointer_to_list((void *) bset, user);
+}
+
+static PyObject * isl_set_basic_sets(PyObject *self, PyObject *args) {
+    long pointer;
+    isl_set *set;
+    PyObject *list;
+    if (!PyArg_ParseTuple(args, "l", &pointer)) {
+        return NULL;
+    }
+    set = (isl_set *) pointer;
+    list = PyList_New(0);
+    if (list == NULL) {
+        return NULL;
+    }
+    if (isl_set_foreach_basic_set(set, _append_basic_set_to_list, list) == -1) {
+        PyErr_SetString(PyExc_RuntimeError,
+            "an error occurred in isl_set_foreach_basic_set");
+        Py_DECREF(list);
+        return NULL;
+    }
+    return list;
+}
+
+static int _append_point_to_list(isl_point *point, void* user) {
+    return _append_pointer_to_list((void *) point, user);
+}
+
+static PyObject * isl_set_points(PyObject *self, PyObject *args) {
+    long pointer;
+    isl_set *set;
+    PyObject *list;
+    if (!PyArg_ParseTuple(args, "l", &pointer)) {
+        return NULL;
+    }
+    set = (isl_set *) pointer;
+    list = PyList_New(0);
+    if (list == NULL) {
+        return NULL;
+    }
+    if (isl_set_foreach_point(set, _append_point_to_list, list) == -1) {
+        PyErr_SetString(PyExc_RuntimeError,
+            "an error occurred in isl_set_foreach_point");
+        Py_DECREF(list);
+        return NULL;
+    }
+    return list;
+}
+
+static int _append_vertex_to_list(isl_vertex *vertex, void* user) {
+    return _append_pointer_to_list((void *) vertex, user);
+}
+
+static PyObject * isl_vertices_vertices(PyObject *self, PyObject *args) {
+    long pointer;
+    isl_vertices *vertices;
+    PyObject *list;
+    if (!PyArg_ParseTuple(args, "l", &pointer)) {
+        return NULL;
+    }
+    vertices = (isl_vertices *) pointer;
+    list = PyList_New(0);
+    if (list == NULL) {
+        return NULL;
+    }
+    if (isl_vertices_foreach_vertex(vertices, _append_vertex_to_list, list) == -1) {
+        PyErr_SetString(PyExc_RuntimeError,
+            "an error occurred in isl_vertices_foreach_vertex");
+        Py_DECREF(list);
+        return NULL;
+    }
+    return list;
+}
+
+
+static PyMethodDef _islhelper_methods[] = {
+    {"isl_basic_set_constraints", isl_basic_set_constraints, METH_VARARGS, NULL},
+    {"isl_set_basic_sets", isl_set_basic_sets, METH_VARARGS, NULL},
+    {"isl_set_points", isl_set_points, METH_VARARGS, NULL},
+    {"isl_vertices_vertices", isl_vertices_vertices, METH_VARARGS, NULL},
+    {NULL, NULL, 0, NULL}
+};
+
+static struct PyModuleDef _islhelpermodule = {
+    PyModuleDef_HEAD_INIT,
+    "_islhelper",
+    NULL,
+    0,
+    _islhelper_methods
+};
+
+PyMODINIT_FUNC PyInit__islhelper(void) {
+    PyObject *m;
+    m = PyModule_Create(&_islhelpermodule);
+    if (m == NULL) {
+        return NULL;
+    }
+    if (PyModule_AddObject(m, "dim_set", PyLong_FromLong(isl_dim_set)) == -1) {
+        return NULL;
+    }
+    return m;
+}