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needforspeed: check first *and* last character before doing a full memcmp

This commit is contained in:
Fredrik Lundh 2006-05-23 10:10:57 +00:00
parent 1bacc641a0
commit 3d885e0195
1 changed files with 6 additions and 4 deletions
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10
Include/unicodeobject.h
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@ -367,10 +367,12 @@ typedef PY_UNICODE_TYPE Py_UNICODE;
for (i_ = 0; i_ < (length); i_++) t_[i_] = v_;\
} while (0)
#define Py_UNICODE_MATCH(string, offset, substring)\
((*((string)->str + (offset)) == *((substring)->str)) &&\
!memcmp((string)->str + (offset), (substring)->str,\
(substring)->length*sizeof(Py_UNICODE)))
/* check if substring matches at given offset. the offset must be
valid, and the substring must not be empty */
#define Py_UNICODE_MATCH(string, offset, substring) \
((*((string)->str + (offset)) == *((substring)->str)) && \
((*((string)->str + (offset) + (substring)->length-1) == *((substring)->str + (substring)->length-1))) && \
!memcmp((string)->str + (offset), (substring)->str, (substring)->length*sizeof(Py_UNICODE)))
#ifdef __cplusplus
extern "C" {