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updated for version 7.3.1175

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Problem:    Using isalpha() and isalnum() can be slow.
Solution:   Use range checks. (Mike Williams)
This commit is contained in:
Bram Moolenaar
2013-06-12 17:12:24 +02:00
parent 81c40c507c
commit 2d473ab932
3 changed files with 10 additions and 8 deletions
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14
src/macros.h
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@@ -99,6 +99,11 @@
# define MB_TOUPPER(c) TOUPPER_LOC(c)
#endif
/* Use our own isdigit() replacement, because on MS-Windows isdigit() returns
* non-zero for superscript 1. Also avoids that isdigit() crashes for numbers
* below 0 and above 255. */
#define VIM_ISDIGIT(c) ((unsigned)(c) - '0' < 10)
/* Like isalpha() but reject non-ASCII characters. Can't be used with a
* special key (negative value). */
#ifdef EBCDIC
@@ -107,17 +112,12 @@
# define ASCII_ISLOWER(c) islower(c)
# define ASCII_ISUPPER(c) isupper(c)
#else
# define ASCII_ISALPHA(c) ((c) < 0x7f && isalpha(c))
# define ASCII_ISALNUM(c) ((c) < 0x7f && isalnum(c))
# define ASCII_ISLOWER(c) ((unsigned)(c) - 'a' < 26)
# define ASCII_ISUPPER(c) ((unsigned)(c) - 'A' < 26)
# define ASCII_ISALPHA(c) (ASCII_ISUPPER(c) || ASCII_ISLOWER(c))
# define ASCII_ISALNUM(c) (ASCII_ISALPHA(c) || VIM_ISDIGIT(c))
#endif
/* Use our own isdigit() replacement, because on MS-Windows isdigit() returns
* non-zero for superscript 1. Also avoids that isdigit() crashes for numbers
* below 0 and above 255. */
#define VIM_ISDIGIT(c) ((unsigned)(c) - '0' < 10)
/* macro version of chartab().
* Only works with values 0-255!
* Doesn't work for UTF-8 mode with chars >= 0x80. */