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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
Download patch file Download diff file Expand all files Collapse all files

16
Objects/codeobject.c
View file

@ -32,10 +32,10 @@ intern_strings(PyObject *tuple)
for (i = PyTuple_GET_SIZE(tuple); --i >= 0; ) {
PyObject *v = PyTuple_GET_ITEM(tuple, i);
if (v == NULL || !PyString_CheckExact(v)) {
if (v == NULL || !PyUnicode_CheckExact(v)) {
Py_FatalError("non-string found in code slot");
}
PyString_InternInPlace(&PyTuple_GET_ITEM(tuple, i));
PyUnicode_InternInPlace(&PyTuple_GET_ITEM(tuple, i));
}
}
@ -58,7 +58,7 @@ PyCode_New(int argcount, int kwonlyargcount,
varnames == NULL || !PyTuple_Check(varnames) ||
freevars == NULL || !PyTuple_Check(freevars) ||
cellvars == NULL || !PyTuple_Check(cellvars) ||
name == NULL || !PyString_Check(name) ||
name == NULL || (!PyString_Check(name) && !PyUnicode_Check(name)) ||
filename == NULL || !PyString_Check(filename) ||
lnotab == NULL || !PyString_Check(lnotab) ||
!PyObject_CheckReadBuffer(code)) {
@ -148,10 +148,10 @@ validate_and_copy_tuple(PyObject *tup)
for (i = 0; i < len; i++) {
item = PyTuple_GET_ITEM(tup, i);
if (PyString_CheckExact(item)) {
if (PyUnicode_CheckExact(item)) {
Py_INCREF(item);
}
else if (!PyString_Check(item)) {
else if (!PyUnicode_Check(item)) {
PyErr_Format(
PyExc_TypeError,
"name tuples must contain only "
@ -161,9 +161,9 @@ validate_and_copy_tuple(PyObject *tup)
return NULL;
}
else {
item = PyString_FromStringAndSize(
PyString_AS_STRING(item),
PyString_GET_SIZE(item));
item = PyUnicode_FromUnicode(
PyUnicode_AS_UNICODE(item),
PyUnicode_GET_SIZE(item));
if (item == NULL) {
Py_DECREF(newtuple);
return NULL;