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/* Fast unicode equal function optimized for dictobject.c and setobject.c */
/* Return 1 if two unicode objects are equal, 0 if not.
* unicode_eq() is called when the hash of two unicode objects is equal.
*/
Py_LOCAL_INLINE(int)
unicode_eq(PyObject *aa, PyObject *bb)
{
register PyUnicodeObject *a = (PyUnicodeObject *)aa;
register PyUnicodeObject *b = (PyUnicodeObject *)bb;
if (PyUnicode_READY(a) == -1 || PyUnicode_READY(b) == -1) {
assert(0 && "unicode_eq ready fail");
return 0;
}
if (PyUnicode_GET_LENGTH(a) != PyUnicode_GET_LENGTH(b))
return 0;
if (PyUnicode_GET_LENGTH(a) == 0)
return 1;
if (PyUnicode_KIND(a) != PyUnicode_KIND(b))
return 0;
/* Just comparing the first byte is enough to see if a and b differ.
* If they are 2 byte or 4 byte character most differences will happen in
* the lower bytes anyways.
*/
if (PyUnicode_1BYTE_DATA(a)[0] != PyUnicode_1BYTE_DATA(b)[0])
return 0;
if (PyUnicode_KIND(a) == PyUnicode_1BYTE_KIND &&
PyUnicode_GET_LENGTH(a) == 1)
return 1;
return memcmp(PyUnicode_1BYTE_DATA(a), PyUnicode_1BYTE_DATA(b),
PyUnicode_GET_LENGTH(a) * PyUnicode_KIND(a)) == 0;
}
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