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py: Minor improvement to unichar_isxdigit

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This drops the size of unicode_isxdigit from 0x1e + 0x02 filler to
0x14 bytes (so net code reduction of 12 bytes) and will make
unicode_is_xdigit perform slightly faster.
This commit is contained in:
Dave Hylands
2015-05-19 16:41:07 -07:00
committed by Damien George
parent 3ad94d6072
commit afaa66b657
1 changed files with 7 additions and 4 deletions
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11
py/unicode.c
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@@ -35,14 +35,17 @@
#define FL_ALPHA (0x08) #define FL_ALPHA (0x08)
#define FL_UPPER (0x10) #define FL_UPPER (0x10)
#define FL_LOWER (0x20) #define FL_LOWER (0x20)
#define FL_XDIGIT (0x40)
// shorthand character attributes // shorthand character attributes
#define AT_PR (FL_PRINT) #define AT_PR (FL_PRINT)
#define AT_SP (FL_SPACE | FL_PRINT) #define AT_SP (FL_SPACE | FL_PRINT)
#define AT_DI (FL_DIGIT | FL_PRINT) #define AT_DI (FL_DIGIT | FL_PRINT | FL_XDIGIT)
#define AT_AL (FL_ALPHA | FL_PRINT) #define AT_AL (FL_ALPHA | FL_PRINT)
#define AT_UP (FL_UPPER | FL_ALPHA | FL_PRINT) #define AT_UP (FL_UPPER | FL_ALPHA | FL_PRINT)
#define AT_LO (FL_LOWER | FL_ALPHA | FL_PRINT) #define AT_LO (FL_LOWER | FL_ALPHA | FL_PRINT)
#define AT_UX (FL_UPPER | FL_ALPHA | FL_PRINT | FL_XDIGIT)
#define AT_LX (FL_LOWER | FL_ALPHA | FL_PRINT | FL_XDIGIT)
// table of attributes for ascii characters // table of attributes for ascii characters
STATIC const uint8_t attr[] = { STATIC const uint8_t attr[] = {
@@ -54,11 +57,11 @@ STATIC const uint8_t attr[] = {
AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR,
AT_DI, AT_DI, AT_DI, AT_DI, AT_DI, AT_DI, AT_DI, AT_DI, AT_DI, AT_DI, AT_DI, AT_DI, AT_DI, AT_DI, AT_DI, AT_DI,
AT_DI, AT_DI, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_DI, AT_DI, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR,
AT_PR, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_PR, AT_UX, AT_UX, AT_UX, AT_UX, AT_UX, AT_UX, AT_UP,
AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP,
AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP, AT_UP,
AT_UP, AT_UP, AT_UP, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR, AT_UP, AT_UP, AT_UP, AT_PR, AT_PR, AT_PR, AT_PR, AT_PR,
AT_PR, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_PR, AT_LX, AT_LX, AT_LX, AT_LX, AT_LX, AT_LX, AT_LO,
AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO,
AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO, AT_LO,
AT_LO, AT_LO, AT_LO, AT_PR, AT_PR, AT_PR, AT_PR, 0 AT_LO, AT_LO, AT_LO, AT_PR, AT_PR, AT_PR, AT_PR, 0
@@ -139,7 +142,7 @@ bool unichar_isdigit(unichar c) {
} }
bool unichar_isxdigit(unichar c) { bool unichar_isxdigit(unichar c) {
return unichar_isdigit(c) || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'); return c < 128 && (attr[c] & FL_XDIGIT) != 0;
} }
/* /*