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Fredrik Lundh <effbot@telia.com>: 

Simplify find code; this is a performance improvement on at least some
platforms.
This commit is contained in:
Fred Drake 2000-06-20 15:47:54 +00:00
parent 440d898230
commit 396f6e0d6a
1 changed files with 4 additions and 8 deletions
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12
Objects/stringobject.c
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@ -651,7 +651,7 @@ string_split(self, args)
i = j = 0;
while (i+n <= len) {
if (s[i] == sub[0] && (n == 1 || memcmp(s+i, sub, n) == 0)) {
if (s[i] == sub[0] && memcmp(s+i, sub, n) == 0) {
if (maxsplit-- <= 0)
break;
item = PyString_FromStringAndSize(s+j, (int)(i-j));
@ -852,8 +852,7 @@ string_find_internal(self, args, dir)
return (long)i;
last -= n;
for (; i <= last; ++i)
if (s[i] == sub[0] &&
(n == 1 || memcmp(&s[i+1], &sub[1], n-1) == 0))
if (s[i] == sub[0] && memcmp(&s[i], sub, n) == 0)
return (long)i;
}
else {
@ -862,8 +861,7 @@ string_find_internal(self, args, dir)
if (n == 0 && i <= last)
return (long)last;
for (j = last-n; j >= i; --j)
if (s[j] == sub[0] &&
(n == 1 || memcmp(&s[j+1], &sub[1], n-1) == 0))
if (s[j] == sub[0] && memcmp(&s[j], sub, n) == 0)
return (long)j;
}
@ -1415,9 +1413,7 @@ mymemfind(mem, len, pat, pat_len)
len -= pat_len;
for (ii = 0; ii <= len; ii++) {
if (mem[ii] == pat[0] &&
(pat_len == 1 ||
memcmp(&mem[ii+1], &pat[1], pat_len-1) == 0)) {
if (mem[ii] == pat[0] && memcmp(&mem[ii], pat, pat_len) == 0) {
return ii;
}
}