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gh-120196: Reuse find_max_char() for bytes objects (#120497)

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Ruben Vorderman 2024-06-17 12:21:58 +02:00 • committed by GitHub
parent 21866c8ed2
commit 945a89b48f
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GPG key ID: B5690EEEBB952194
2 changed files with 25 additions and 55 deletions
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10
Objects/stringlib/find_max_char.h
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@ -1,6 +1,7 @@
/* Finding the optimal width of unicode characters in a buffer */
#if !STRINGLIB_IS_UNICODE
/* find_max_char for one-byte will work for bytes objects as well. */
#if !STRINGLIB_IS_UNICODE && STRINGLIB_SIZEOF_CHAR > 1
# error "find_max_char.h is specific to Unicode"
#endif
@ -20,19 +21,20 @@ Py_LOCAL_INLINE(Py_UCS4)
STRINGLIB(find_max_char)(const STRINGLIB_CHAR *begin, const STRINGLIB_CHAR *end)
{
const unsigned char *p = (const unsigned char *) begin;
const unsigned char *_end = (const unsigned char *)end;
while (p < end) {
while (p < _end) {
if (_Py_IS_ALIGNED(p, ALIGNOF_SIZE_T)) {
/* Help register allocation */
const unsigned char *_p = p;
while (_p + SIZEOF_SIZE_T <= end) {
while (_p + SIZEOF_SIZE_T <= _end) {
size_t value = *(const size_t *) _p;
if (value & UCS1_ASCII_CHAR_MASK)
return 255;
_p += SIZEOF_SIZE_T;
}
p = _p;
if (p == end)
if (p == _end)
break;
}
if (*p++ & 0x80)