LCOV - code coverage report
Current view: directory - js/src/yarr - ASCIICType.h (source / functions) Found Hit Coverage
Test: app.info Lines: 12 10 83.3 %
Date: 2012-06-02 Functions: 12 10 83.3 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2                 :  * vim: set ts=8 sw=4 et tw=99 ft=cpp:
       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 WTF_ASCIICType_h
      34                 : #define WTF_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           22060 :     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           25602 :     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               0 :     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               0 :     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           36625 :     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           34492 :     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              44 :     inline bool isASCIIOctalDigit(int c) { return (c >= '0') & (c <= '7'); }
      96                 :     inline bool isASCIIOctalDigit(unsigned c) { return (c >= '0') & (c <= '7'); }
      97                 : 
      98           10920 :     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            7342 :     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            3578 :     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            3578 :     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           17246 :     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

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