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svn+ssh://pythondev@svn.python.org/python/trunk

........
  r62048 | georg.brandl | 2008-03-29 23:53:55 -0700 (Sat, 29 Mar 2008) | 2 lines

  Adapt test_ast to the new ExceptHandler type.
........
  r62050 | georg.brandl | 2008-03-30 00:09:22 -0700 (Sun, 30 Mar 2008) | 2 lines

  Convert test_ast to unittest and add a test for r62049.
........
  r62051 | georg.brandl | 2008-03-30 12:00:49 -0700 (Sun, 30 Mar 2008) | 2 lines

  Make _fields attr for no fields consistent with _attributes attr.
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  r62059 | georg.brandl | 2008-03-30 13:20:39 -0700 (Sun, 30 Mar 2008) | 2 lines

  Make AST nodes pickleable.
........

1 files changed, 30 insertions, 10 deletions

diff --git a/Parser/asdl_c.py b/Parser/asdl_c.py
index a38c268..1c83f50 100755
--- a/Parser/asdl_c.py
+++ b/Parser/asdl_c.py
@@ -628,9 +628,34 @@ ast_type_init(PyObject *self, PyObject *args, PyObject *kw)
     return res;
 }
 
+/* Pickling support */
+static PyObject *
+ast_type_reduce(PyObject *self, PyObject *unused)
+{
+    PyObject *res;
+    PyObject *dict = PyObject_GetAttrString(self, "__dict__");
+    if (dict == NULL) {
+        if (PyErr_ExceptionMatches(PyExc_AttributeError))
+            PyErr_Clear();
+        else
+            return NULL;
+    }
+    if (dict) {
+        res = Py_BuildValue("O()O", Py_TYPE(self), dict);
+        Py_DECREF(dict);
+        return res;
+    }
+    return Py_BuildValue("O()", Py_TYPE(self));
+}
+
+static PyMethodDef ast_type_methods[] = {
+    {"__reduce__", ast_type_reduce, METH_NOARGS, NULL},
+    {NULL}
+};
+
 static PyTypeObject AST_type = {
     PyVarObject_HEAD_INIT(&PyType_Type, 0)
-    "AST",
+    "_ast.AST",
     sizeof(PyObject),
     0,
     0,                       /* tp_dealloc */
@@ -656,7 +681,7 @@ static PyTypeObject AST_type = {
     0,                       /* tp_weaklistoffset */
     0,                       /* tp_iter */
     0,                       /* tp_iternext */
-    0,                       /* tp_methods */
+    ast_type_methods,        /* tp_methods */
     0,                       /* tp_members */
     0,                       /* tp_getset */
     0,                       /* tp_base */
@@ -675,14 +700,9 @@ static PyTypeObject* make_type(char *type, PyTypeObject* base, char**fields, int
 {
     PyObject *fnames, *result;
     int i;
-    if (num_fields) {
-        fnames = PyTuple_New(num_fields);
-        if (!fnames) return NULL;
-    } else {
-        fnames = Py_None;
-        Py_INCREF(Py_None);
-    }
-    for(i=0; i < num_fields; i++) {
+    fnames = PyTuple_New(num_fields);
+    if (!fnames) return NULL;
+    for (i = 0; i < num_fields; i++) {
         PyObject *field = PyUnicode_FromString(fields[i]);
         if (!field) {
             Py_DECREF(fnames);