cpython/Objects/stringlib/eq.h

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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)
{
assert(PyUnicode_Check(aa));
assert(PyUnicode_Check(bb));
assert(PyUnicode_IS_READY(aa));
assert(PyUnicode_IS_READY(bb));
PyUnicodeObject *a = (PyUnicodeObject *)aa;
PyUnicodeObject *b = (PyUnicodeObject *)bb;
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if (PyUnicode_GET_LENGTH(a) != PyUnicode_GET_LENGTH(b))
return 0;
if (PyUnicode_GET_LENGTH(a) == 0)
return 1;
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if (PyUnicode_KIND(a) != PyUnicode_KIND(b))
return 0;
return memcmp(PyUnicode_1BYTE_DATA(a), PyUnicode_1BYTE_DATA(b),
PyUnicode_GET_LENGTH(a) * PyUnicode_KIND(a)) == 0;
}