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comparison tango/lib/compiler/llvmdc/util/ctype.d @ 132:1700239cab2e trunk

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[svn r136] MAJOR UNSTABLE UPDATE!!! Initial commit after moving to Tango instead of Phobos. Lots of bugfixes... This build is not suitable for most things.
author lindquist
date Fri, 11 Jan 2008 17:57:40 +0100
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131:5825d48b27d1 132:1700239cab2e
1
2 /*
3 * Copyright (C) 2004-2005 by Digital Mars, www.digitalmars.com
4 * Written by Walter Bright
5 *
6 * This software is provided 'as-is', without any express or implied
7 * warranty. In no event will the authors be held liable for any damages
8 * arising from the use of this software.
9 *
10 * Permission is granted to anyone to use this software for any purpose,
11 * including commercial applications, and to alter it and redistribute it
12 * freely, in both source and binary form, subject to the following
13 * restrictions:
14 *
15 * o The origin of this software must not be misrepresented; you must not
16 * claim that you wrote the original software. If you use this software
17 * in a product, an acknowledgment in the product documentation would be
18 * appreciated but is not required.
19 * o Altered source versions must be plainly marked as such, and must not
20 * be misrepresented as being the original software.
21 * o This notice may not be removed or altered from any source
22 * distribution.
23 */
24
25 // Simple ASCII char classification functions
26
27 module util.ctype;
28
29 int isalnum(dchar c) { return (c <= 0x7F) ? _ctype[c] & (_ALP|_DIG) : 0; }
30 int isalpha(dchar c) { return (c <= 0x7F) ? _ctype[c] & (_ALP) : 0; }
31 int iscntrl(dchar c) { return (c <= 0x7F) ? _ctype[c] & (_CTL) : 0; }
32 int isdigit(dchar c) { return (c <= 0x7F) ? _ctype[c] & (_DIG) : 0; }
33 int islower(dchar c) { return (c <= 0x7F) ? _ctype[c] & (_LC) : 0; }
34 int ispunct(dchar c) { return (c <= 0x7F) ? _ctype[c] & (_PNC) : 0; }
35 int isspace(dchar c) { return (c <= 0x7F) ? _ctype[c] & (_SPC) : 0; }
36 int isupper(dchar c) { return (c <= 0x7F) ? _ctype[c] & (_UC) : 0; }
37 int isxdigit(dchar c) { return (c <= 0x7F) ? _ctype[c] & (_HEX) : 0; }
38 int isgraph(dchar c) { return (c <= 0x7F) ? _ctype[c] & (_ALP|_DIG|_PNC) : 0; }
39 int isprint(dchar c) { return (c <= 0x7F) ? _ctype[c] & (_ALP|_DIG|_PNC|_BLK) : 0; }
40 int isascii(dchar c) { return c <= 0x7F; }
41
42 dchar tolower(dchar c)
43 out (result)
44 {
45 assert(!isupper(result));
46 }
47 body
48 {
49 return isupper(c) ? c + (cast(dchar)'a' - 'A') : c;
50 }
51
52 dchar toupper(dchar c)
53 out (result)
54 {
55 assert(!islower(result));
56 }
57 body
58 {
59 return islower(c) ? c - (cast(dchar)'a' - 'A') : c;
60 }
61
62 private:
63
64 enum
65 {
66 _SPC = 8,
67 _CTL = 0x20,
68 _BLK = 0x40,
69 _HEX = 0x80,
70 _UC = 1,
71 _LC = 2,
72 _PNC = 0x10,
73 _DIG = 4,
74 _ALP = _UC|_LC,
75 }
76
77 ubyte _ctype[128] =
78 [
79 _CTL,_CTL,_CTL,_CTL,_CTL,_CTL,_CTL,_CTL,
80 _CTL,_CTL|_SPC,_CTL|_SPC,_CTL|_SPC,_CTL|_SPC,_CTL|_SPC,_CTL,_CTL,
81 _CTL,_CTL,_CTL,_CTL,_CTL,_CTL,_CTL,_CTL,
82 _CTL,_CTL,_CTL,_CTL,_CTL,_CTL,_CTL,_CTL,
83 _SPC|_BLK,_PNC,_PNC,_PNC,_PNC,_PNC,_PNC,_PNC,
84 _PNC,_PNC,_PNC,_PNC,_PNC,_PNC,_PNC,_PNC,
85 _DIG|_HEX,_DIG|_HEX,_DIG|_HEX,_DIG|_HEX,_DIG|_HEX,
86 _DIG|_HEX,_DIG|_HEX,_DIG|_HEX,_DIG|_HEX,_DIG|_HEX,
87 _PNC,_PNC,_PNC,_PNC,_PNC,_PNC,
88 _PNC,_UC|_HEX,_UC|_HEX,_UC|_HEX,_UC|_HEX,_UC|_HEX,_UC|_HEX,_UC,
89 _UC,_UC,_UC,_UC,_UC,_UC,_UC,_UC,
90 _UC,_UC,_UC,_UC,_UC,_UC,_UC,_UC,
91 _UC,_UC,_UC,_PNC,_PNC,_PNC,_PNC,_PNC,
92 _PNC,_LC|_HEX,_LC|_HEX,_LC|_HEX,_LC|_HEX,_LC|_HEX,_LC|_HEX,_LC,
93 _LC,_LC,_LC,_LC,_LC,_LC,_LC,_LC,
94 _LC,_LC,_LC,_LC,_LC,_LC,_LC,_LC,
95 _LC,_LC,_LC,_PNC,_PNC,_PNC,_PNC,_CTL
96 ];
97
98
99 unittest
100 {
101 assert(isspace(' '));
102 assert(!isspace('z'));
103 assert(toupper('a') == 'A');
104 assert(tolower('Q') == 'q');
105 assert(!isxdigit('G'));
106 }