diff options
Diffstat (limited to 'Include')
| -rw-r--r-- | Include/unicodeobject.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Include/unicodeobject.h b/Include/unicodeobject.h index d7808a4..3954289 100644 --- a/Include/unicodeobject.h +++ b/Include/unicodeobject.h @@ -358,7 +358,14 @@ typedef PY_UNICODE_TYPE Py_UNICODE; #else -#define Py_UNICODE_ISSPACE(ch) _PyUnicode_IsWhitespace(ch) +/* Since splitting on whitespace is an important use case, and whitespace + in most situations is solely ASCII whitespace, we optimize for the common + case by using a quick look-up table with an inlined check. + */ +extern const unsigned char _Py_ascii_whitespace[]; + +#define Py_UNICODE_ISSPACE(ch) \ + ((ch) < 128U ? _Py_ascii_whitespace[(ch)] : _PyUnicode_IsWhitespace(ch)) #define Py_UNICODE_ISLOWER(ch) _PyUnicode_IsLowercase(ch) #define Py_UNICODE_ISUPPER(ch) _PyUnicode_IsUppercase(ch) |