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comparison: js/src/yarr/ASCIICType.h
js/src/yarr/ASCIICType.h
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * vim: set ts=8 sts=4 et sw=4 tw=99: | |
| 3 * | |
| 4 * ***** BEGIN LICENSE BLOCK ***** | |
| 5 * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved. | |
| 6 * | |
| 7 * Redistribution and use in source and binary forms, with or without | |
| 8 * modification, are permitted provided that the following conditions | |
| 9 * are met: | |
| 10 * | |
| 11 * 1. Redistributions of source code must retain the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer. | |
| 13 * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 * notice, this list of conditions and the following disclaimer in the | |
| 15 * documentation and/or other materials provided with the distribution. | |
| 16 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of | |
| 17 * its contributors may be used to endorse or promote products derived | |
| 18 * from this software without specific prior written permission. | |
| 19 * | |
| 20 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
| 21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 23 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
| 24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
| 27 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 30 * | |
| 31 * ***** END LICENSE BLOCK ***** */ | |
| 32 | |
| 33 #ifndef yarr_ASCIICType_h | |
| 34 #define yarr_ASCIICType_h | |
| 35 | |
| 36 #include "assembler/wtf/Assertions.h" | |
| 37 | |
| 38 // The behavior of many of the functions in the <ctype.h> header is dependent | |
| 39 // on the current locale. But in the WebKit project, all uses of those functions | |
| 40 // are in code processing something that's not locale-specific. These equivalents | |
| 41 // for some of the <ctype.h> functions are named more explicitly, not dependent | |
| 42 // on the C library locale, and we should also optimize them as needed. | |
| 43 | |
| 44 // All functions return false or leave the character unchanged if passed a character | |
| 45 // that is outside the range 0-7F. So they can be used on Unicode strings or | |
| 46 // characters if the intent is to do processing only if the character is ASCII. | |
| 47 | |
| 48 namespace WTF { | |
| 49 | |
| 50 inline bool isASCII(char c) { return !(c & ~0x7F); } | |
| 51 inline bool isASCII(unsigned short c) { return !(c & ~0x7F); } | |
| 52 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 53 inline bool isASCII(wchar_t c) { return !(c & ~0x7F); } | |
| 54 #endif | |
| 55 inline bool isASCII(int c) { return !(c & ~0x7F); } | |
| 56 inline bool isASCII(unsigned c) { return !(c & ~0x7F); } | |
| 57 | |
| 58 inline bool isASCIIAlpha(char c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } | |
| 59 inline bool isASCIIAlpha(unsigned short c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } | |
| 60 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 61 inline bool isASCIIAlpha(wchar_t c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } | |
| 62 #endif | |
| 63 inline bool isASCIIAlpha(int c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } | |
| 64 inline bool isASCIIAlpha(unsigned c) { return (c | 0x20) >= 'a' && (c | 0x20) <= 'z'; } | |
| 65 | |
| 66 inline bool isASCIIAlphanumeric(char c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); } | |
| 67 inline bool isASCIIAlphanumeric(unsigned short c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); } | |
| 68 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 69 inline bool isASCIIAlphanumeric(wchar_t c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); } | |
| 70 #endif | |
| 71 inline bool isASCIIAlphanumeric(int c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); } | |
| 72 inline bool isASCIIAlphanumeric(unsigned c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'z'); } | |
| 73 | |
| 74 inline bool isASCIIDigit(char c) { return (c >= '0') & (c <= '9'); } | |
| 75 inline bool isASCIIDigit(unsigned short c) { return (c >= '0') & (c <= '9'); } | |
| 76 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 77 inline bool isASCIIDigit(wchar_t c) { return (c >= '0') & (c <= '9'); } | |
| 78 #endif | |
| 79 inline bool isASCIIDigit(int c) { return (c >= '0') & (c <= '9'); } | |
| 80 inline bool isASCIIDigit(unsigned c) { return (c >= '0') & (c <= '9'); } | |
| 81 | |
| 82 inline bool isASCIIHexDigit(char c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); } | |
| 83 inline bool isASCIIHexDigit(unsigned short c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); } | |
| 84 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 85 inline bool isASCIIHexDigit(wchar_t c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); } | |
| 86 #endif | |
| 87 inline bool isASCIIHexDigit(int c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); } | |
| 88 inline bool isASCIIHexDigit(unsigned c) { return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); } | |
| 89 | |
| 90 inline bool isASCIIOctalDigit(char c) { return (c >= '0') & (c <= '7'); } | |
| 91 inline bool isASCIIOctalDigit(unsigned short c) { return (c >= '0') & (c <= '7'); } | |
| 92 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 93 inline bool isASCIIOctalDigit(wchar_t c) { return (c >= '0') & (c <= '7'); } | |
| 94 #endif | |
| 95 inline bool isASCIIOctalDigit(int c) { return (c >= '0') & (c <= '7'); } | |
| 96 inline bool isASCIIOctalDigit(unsigned c) { return (c >= '0') & (c <= '7'); } | |
| 97 | |
| 98 inline bool isASCIILower(char c) { return c >= 'a' && c <= 'z'; } | |
| 99 inline bool isASCIILower(unsigned short c) { return c >= 'a' && c <= 'z'; } | |
| 100 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 101 inline bool isASCIILower(wchar_t c) { return c >= 'a' && c <= 'z'; } | |
| 102 #endif | |
| 103 inline bool isASCIILower(int c) { return c >= 'a' && c <= 'z'; } | |
| 104 inline bool isASCIILower(unsigned c) { return c >= 'a' && c <= 'z'; } | |
| 105 | |
| 106 inline bool isASCIIUpper(char c) { return c >= 'A' && c <= 'Z'; } | |
| 107 inline bool isASCIIUpper(unsigned short c) { return c >= 'A' && c <= 'Z'; } | |
| 108 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 109 inline bool isASCIIUpper(wchar_t c) { return c >= 'A' && c <= 'Z'; } | |
| 110 #endif | |
| 111 inline bool isASCIIUpper(int c) { return c >= 'A' && c <= 'Z'; } | |
| 112 inline bool isASCIIUpper(unsigned c) { return c >= 'A' && c <= 'Z'; } | |
| 113 | |
| 114 /* | |
| 115 Statistics from a run of Apple's page load test for callers of isASCIISpace: | |
| 116 | |
| 117 character count | |
| 118 --------- ----- | |
| 119 non-spaces 689383 | |
| 120 20 space 294720 | |
| 121 0A \n 89059 | |
| 122 09 \t 28320 | |
| 123 0D \r 0 | |
| 124 0C \f 0 | |
| 125 0B \v 0 | |
| 126 */ | |
| 127 inline bool isASCIISpace(char c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); } | |
| 128 inline bool isASCIISpace(unsigned short c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); } | |
| 129 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 130 inline bool isASCIISpace(wchar_t c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); } | |
| 131 #endif | |
| 132 inline bool isASCIISpace(int c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); } | |
| 133 inline bool isASCIISpace(unsigned c) { return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9)); } | |
| 134 | |
| 135 inline char toASCIILower(char c) { return c | ((c >= 'A' && c <= 'Z') << 5); } | |
| 136 inline unsigned short toASCIILower(unsigned short c) { return c | ((c >= 'A' && c <= 'Z') << 5); } | |
| 137 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 138 inline wchar_t toASCIILower(wchar_t c) { return c | ((c >= 'A' && c <= 'Z') << 5); } | |
| 139 #endif | |
| 140 inline int toASCIILower(int c) { return c | ((c >= 'A' && c <= 'Z') << 5); } | |
| 141 inline unsigned toASCIILower(unsigned c) { return c | ((c >= 'A' && c <= 'Z') << 5); } | |
| 142 | |
| 143 // FIXME: Why do these need static_cast? | |
| 144 inline char toASCIIUpper(char c) { return static_cast<char>(c & ~((c >= 'a' && c <= 'z') << 5)); } | |
| 145 inline unsigned short toASCIIUpper(unsigned short c) { return static_cast<unsigned short>(c & ~((c >= 'a' && c <= 'z') << 5)); } | |
| 146 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 147 inline wchar_t toASCIIUpper(wchar_t c) { return static_cast<wchar_t>(c & ~((c >= 'a' && c <= 'z') << 5)); } | |
| 148 #endif | |
| 149 inline int toASCIIUpper(int c) { return static_cast<int>(c & ~((c >= 'a' && c <= 'z') << 5)); } | |
| 150 inline unsigned toASCIIUpper(unsigned c) { return static_cast<unsigned>(c & ~((c >= 'a' && c <= 'z') << 5)); } | |
| 151 | |
| 152 inline int toASCIIHexValue(char c) { ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; } | |
| 153 inline int toASCIIHexValue(unsigned short c) { ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; } | |
| 154 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 155 inline int toASCIIHexValue(wchar_t c) { ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; } | |
| 156 #endif | |
| 157 inline int toASCIIHexValue(int c) { ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; } | |
| 158 inline int toASCIIHexValue(unsigned c) { ASSERT(isASCIIHexDigit(c)); return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF; } | |
| 159 | |
| 160 inline bool isASCIIPrintable(char c) { return c >= ' ' && c <= '~'; } | |
| 161 inline bool isASCIIPrintable(unsigned short c) { return c >= ' ' && c <= '~'; } | |
| 162 #if !WTF_COMPILER_MSVC || defined(_NATIVE_WCHAR_T_DEFINED) | |
| 163 inline bool isASCIIPrintable(wchar_t c) { return c >= ' ' && c <= '~'; } | |
| 164 #endif | |
| 165 inline bool isASCIIPrintable(int c) { return c >= ' ' && c <= '~'; } | |
| 166 inline bool isASCIIPrintable(unsigned c) { return c >= ' ' && c <= '~'; } | |
| 167 } | |
| 168 | |
| 169 using WTF::isASCII; | |
| 170 using WTF::isASCIIAlpha; | |
| 171 using WTF::isASCIIAlphanumeric; | |
| 172 using WTF::isASCIIDigit; | |
| 173 using WTF::isASCIIHexDigit; | |
| 174 using WTF::isASCIILower; | |
| 175 using WTF::isASCIIOctalDigit; | |
| 176 using WTF::isASCIIPrintable; | |
| 177 using WTF::isASCIISpace; | |
| 178 using WTF::isASCIIUpper; | |
| 179 using WTF::toASCIIHexValue; | |
| 180 using WTF::toASCIILower; | |
| 181 using WTF::toASCIIUpper; | |
| 182 | |
| 183 #endif /* yarr_ASCIICType_h */ |
