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Make identifiers str (not str8) objects throughout.

Browse source 
This affects the parser, various object implementations,
and all places that put identifiers into C string literals.

In testing, a number of crashes occurred as code would
fail when the recursion limit was reached (such as the
Unicode interning dictionary having key/value pairs where
key is not value). To solve these, I added an overflowed
flag, which allows for 50 more recursions after the
limit was reached and the exception was raised, and
a recursion_critical flag, which indicates that recursion
absolutely must be allowed, i.e. that a certain call
must not cause a stack overflow exception.

There are still some places where both str and str8 are
accepted as identifiers; these should eventually be
removed.
This commit is contained in:
Martin v. Löwis 2007-06-10 09:51:05 +00:00
parent 38e43c25ee
commit 5b222135f8
40 changed files with 462 additions and 289 deletions
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24
Python/bltinmodule.c
View file

@ -48,7 +48,7 @@ builtin___build_class__(PyObject *self, PyObject *args, PyObject *kwds)
}
func = PyTuple_GET_ITEM(args, 0); /* Better be callable */
name = PyTuple_GET_ITEM(args, 1);
if (!PyString_Check(name)) {
if ((!PyString_Check(name) && !PyUnicode_Check(name))) {
PyErr_SetString(PyExc_TypeError,
"__build_class__: name is not a string");
return NULL;
@ -835,20 +835,23 @@ globals and locals. If only globals is given, locals defaults to it.");
static PyObject *
builtin_getattr(PyObject *self, PyObject *args)
{
PyObject *v, *result, *dflt = NULL;
PyObject *v, *result, *dflt = NULL, *release = NULL;
PyObject *name;
if (!PyArg_UnpackTuple(args, "getattr", 2, 3, &v, &name, &dflt))
return NULL;
if (PyUnicode_Check(name)) {
name = _PyUnicode_AsDefaultEncodedString(name, NULL);
if (name == NULL)
if (PyString_Check(name)) {
release = PyString_AsDecodedObject(name, NULL, NULL);
if (!release)
return NULL;
name = release;
}
if (!PyString_Check(name)) {
if (!PyUnicode_Check(name)) {
PyErr_SetString(PyExc_TypeError,
"getattr(): attribute name must be string");
Py_XDECREF(release);
return NULL;
}
result = PyObject_GetAttr(v, name);
@ -859,6 +862,7 @@ builtin_getattr(PyObject *self, PyObject *args)
Py_INCREF(dflt);
result = dflt;
}
Py_XDECREF(release);
return result;
}
@ -894,13 +898,7 @@ builtin_hasattr(PyObject *self, PyObject *args)
if (!PyArg_UnpackTuple(args, "hasattr", 2, 2, &v, &name))
return NULL;
if (PyUnicode_Check(name)) {
name = _PyUnicode_AsDefaultEncodedString(name, NULL);
if (name == NULL)
return NULL;
}
if (!PyString_Check(name)) {
if (!PyUnicode_Check(name)) {
PyErr_SetString(PyExc_TypeError,
"hasattr(): attribute name must be string");
return NULL;