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Fixed #4067 by implementing _attributes and _fields for the AST root node.

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This commit is contained in:
Armin Ronacher 2008-10-19 08:27:43 +00:00
parent 92b70bcc6e
commit 35e01fbeaa
2 changed files with 36 additions and 0 deletions
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18
Parser/asdl_c.py
View file

@ -824,12 +824,30 @@ static int obj2ast_bool(PyObject* obj, bool* out, PyArena* arena)
return 0; return 0;
} }
static int add_ast_fields()
{
PyObject *empty_tuple, *d;
if (PyType_Ready(&AST_type) < 0)
return -1;
d = AST_type.tp_dict;
empty_tuple = PyTuple_New(0);
if (!empty_tuple ||
PyDict_SetItemString(d, "_fields", empty_tuple) < 0 ||
PyDict_SetItemString(d, "_attributes", empty_tuple) < 0) {
Py_XDECREF(empty_tuple);
return -1;
}
Py_DECREF(empty_tuple);
return 0;
}
""", 0, reflow=False) """, 0, reflow=False)
self.emit("static int init_types(void)",0) self.emit("static int init_types(void)",0)
self.emit("{", 0) self.emit("{", 0)
self.emit("static int initialized;", 1) self.emit("static int initialized;", 1)
self.emit("if (initialized) return 1;", 1) self.emit("if (initialized) return 1;", 1)
self.emit("if (add_ast_fields() < 0) return 0;", 1)
for dfn in mod.dfns: for dfn in mod.dfns:
self.visit(dfn) self.visit(dfn)
self.emit("initialized = 1;", 1) self.emit("initialized = 1;", 1)

18
Python/Python-ast.c
View file

@ -615,11 +615,29 @@ static int obj2ast_bool(PyObject* obj, bool* out, PyArena* arena)
return 0; return 0;
} }
static int add_ast_fields()
{
PyObject *empty_tuple, *d;
if (PyType_Ready(&AST_type) < 0)
return -1;
d = AST_type.tp_dict;
empty_tuple = PyTuple_New(0);
if (!empty_tuple ||
PyDict_SetItemString(d, "_fields", empty_tuple) < 0 ||
PyDict_SetItemString(d, "_attributes", empty_tuple) < 0) {
Py_XDECREF(empty_tuple);
return -1;
}
Py_DECREF(empty_tuple);
return 0;
}
static int init_types(void) static int init_types(void)
{ {
static int initialized; static int initialized;
if (initialized) return 1; if (initialized) return 1;
if (add_ast_fields() < 0) return 0;
mod_type = make_type("mod", &AST_type, NULL, 0); mod_type = make_type("mod", &AST_type, NULL, 0);
if (!mod_type) return 0; if (!mod_type) return 0;
if (!add_attributes(mod_type, NULL, 0)) return 0; if (!add_attributes(mod_type, NULL, 0)) return 0;