35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/* 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)
|
|
{
|
|
PyUnicodeObject *a = (PyUnicodeObject *)aa;
|
|
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;
|
|
}
|