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Simplify unicode_resizable(): singletons reference count is at least 2

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This commit is contained in:
Victor Stinner 2011-10-03 20:06:05 +02:00
parent 8619cd7376
commit 77bb47b312
1 changed files with 7 additions and 13 deletions
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20
Objects/unicodeobject.c
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@ -1257,26 +1257,20 @@ unicode_dealloc(register PyUnicodeObject *unicode)
static int
unicode_resizable(PyObject *unicode)
{
Py_ssize_t len;
if (Py_REFCNT(unicode) != 1)
return 0;
if (PyUnicode_CHECK_INTERNED(unicode))
return 0;
if (unicode == unicode_empty)
return 0;
if (_PyUnicode_KIND(unicode) == PyUnicode_WCHAR_KIND)
len = PyUnicode_WSTR_LENGTH(unicode);
else
len = PyUnicode_GET_LENGTH(unicode);
if (len == 1) {
Py_UCS4 ch;
if (_PyUnicode_KIND(unicode) == PyUnicode_WCHAR_KIND)
ch = _PyUnicode_WSTR(unicode)[0];
else
ch = PyUnicode_READ_CHAR(unicode, 0);
assert (unicode != unicode_empty);
#ifdef Py_DEBUG
if (_PyUnicode_KIND(unicode) != PyUnicode_WCHAR_KIND
&& PyUnicode_GET_LENGTH(unicode) == 1)
{
Py_UCS4 ch = PyUnicode_READ_CHAR(unicode, 0);
if (ch < 256 && unicode_latin1[ch] == unicode)
return 0;
}
#endif
return 1;
}