Implement a generic python module

With contributions from Håvard Graff

5 files changed, 105 insertions, 0 deletions

diff --git a/test cases/python/1 extmodule/blaster.py b/test cases/python/1 extmodule/blaster.py
new file mode 100755
index 0000000..163b6d4
--- /dev/null
+++ b/test cases/python/1 extmodule/blaster.py
@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+
+import sys
+import tachyon
+
+result = tachyon.phaserize('shoot')
+
+if not isinstance(result, int):
+    print('Returned result not an integer.')
+    sys.exit(1)
+
+if result != 1:
+    print('Returned result {} is not 1.'.format(result))
+    sys.exit(1)
diff --git a/test cases/python/1 extmodule/ext/meson.build b/test cases/python/1 extmodule/ext/meson.build
new file mode 100644
index 0000000..b13bb32
--- /dev/null
+++ b/test cases/python/1 extmodule/ext/meson.build
@@ -0,0 +1,6 @@
+pylib = py.extension_module('tachyon',
+  'tachyon_module.c',
+  dependencies : py_dep,
+)
+
+pypathdir = meson.current_build_dir()
diff --git a/test cases/python/1 extmodule/ext/tachyon_module.c b/test cases/python/1 extmodule/ext/tachyon_module.c
new file mode 100644
index 0000000..68eda53
--- /dev/null
+++ b/test cases/python/1 extmodule/ext/tachyon_module.c
@@ -0,0 +1,59 @@
+/*
+  Copyright 2018 The Meson development team
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
+/* A very simple Python extension module. */
+
+#include <Python.h>
+#include <string.h>
+
+static PyObject* phaserize(PyObject *self, PyObject *args) {
+    const char *message;
+    int result;
+
+    if(!PyArg_ParseTuple(args, "s", &message))
+        return NULL;
+
+    result = strcmp(message, "shoot") ? 0 : 1;
+#if PY_VERSION_HEX < 0x03000000
+    return PyInt_FromLong(result);
+#else
+    return PyLong_FromLong(result);
+#endif
+}
+
+static PyMethodDef TachyonMethods[] = {
+    {"phaserize",  phaserize, METH_VARARGS,
+     "Shoot tachyon cannons."},
+    {NULL, NULL, 0, NULL}
+};
+
+#if PY_VERSION_HEX < 0x03000000
+PyMODINIT_FUNC inittachyon(void) {
+    Py_InitModule("tachyon", TachyonMethods);
+}
+#else
+static struct PyModuleDef tachyonmodule = {
+   PyModuleDef_HEAD_INIT,
+   "tachyon",
+   NULL,
+   -1,
+   TachyonMethods
+};
+
+PyMODINIT_FUNC PyInit_tachyon(void) {
+    return PyModule_Create(&tachyonmodule);
+}
+#endif
diff --git a/test cases/python/1 extmodule/meson.build b/test cases/python/1 extmodule/meson.build
new file mode 100644
index 0000000..0e24a70
--- /dev/null
+++ b/test cases/python/1 extmodule/meson.build
@@ -0,0 +1,23 @@
+project('Python extension module', 'c',
+  default_options : ['buildtype=release'])
+
+py_mod = import('python')
+
+py = py_mod.find(get_option('python'), required : false)
+
+if py.found()
+  py_dep = py.dependency()
+
+  if py_dep.found()
+    subdir('ext')
+
+    test('extmod',
+      py,
+      args : files('blaster.py'),
+      env : ['PYTHONPATH=' + pypathdir])
+  else
+    error('MESON_SKIP_TEST: Python libraries not found, skipping test.')
+  endif
+else
+  error('MESON_SKIP_TEST: Python not found, skipping test.')
+endif
diff --git a/test cases/python/1 extmodule/meson_options.txt b/test cases/python/1 extmodule/meson_options.txt
new file mode 100644
index 0000000..b8f645d
--- /dev/null
+++ b/test cases/python/1 extmodule/meson_options.txt
@@ -0,0 +1,3 @@
+option('python', type: 'string',
+  description: 'Name of or path to the python executable'
+)