Move Source/WTF/wtf to Source/wtf

Source/WTF/wtf/ASCIICType.h

-/*
- * Copyright (C) 2007, 2008, 2009, 2011 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1.  Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer. 
- * 2.  Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution. 
- * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
- *     its contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission. 
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef WTF_ASCIICType_h
-#define WTF_ASCIICType_h
-
-#include <wtf/Assertions.h>
-
-// The behavior of many of the functions in the <ctype.h> header is dependent
-// on the current locale. But in the WebKit project, all uses of those functions
-// are in code processing something that's not locale-specific. These equivalents
-// for some of the <ctype.h> functions are named more explicitly, not dependent
-// on the C library locale, and we should also optimize them as needed.
-
-// All functions return false or leave the character unchanged if passed a character
-// that is outside the range 0-7F. So they can be used on Unicode strings or
-// characters if the intent is to do processing only if the character is ASCII.
-
-namespace WTF {
-
-template<typename CharType> inline bool isASCII(CharType c)
-{
-    return !(c & ~0x7F);
-}
-
-template<typename CharType> inline bool isASCIIAlpha(CharType c)
-{
-    return (c | 0x20) >= 'a' && (c | 0x20) <= 'z';
-}
-
-template<typename CharType> inline bool isASCIIDigit(CharType c)
-{
-    return c >= '0' && c <= '9';
-}
-
-template<typename CharType> inline bool isASCIIAlphanumeric(CharType c)
-{
-    return isASCIIDigit(c) || isASCIIAlpha(c);
-}
-
-template<typename CharType> inline bool isASCIIHexDigit(CharType c)
-{
-    return isASCIIDigit(c) || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f');
-}
-
-template<typename CharType> inline bool isASCIILower(CharType c)
-{
-    return c >= 'a' && c <= 'z';
-}
-
-template<typename CharType> inline bool isASCIIOctalDigit(CharType c)
-{
-    return (c >= '0') & (c <= '7');
-}
-
-template<typename CharType> inline bool isASCIIPrintable(CharType c)
-{
-    return c >= ' ' && c <= '~';
-}
-
-/*
- Statistics from a run of Apple's page load test for callers of isASCIISpace:
-
- character          count
- ---------          -----
- non-spaces         689383
- 20  space          294720
- 0A  \n             89059
- 09  \t             28320
- 0D  \r             0
- 0C  \f             0
- 0B  \v             0
- */
-template<typename CharType> inline bool isASCIISpace(CharType c)
-{
-    return c <= ' ' && (c == ' ' || (c <= 0xD && c >= 0x9));
-}
-
-template<typename CharType> inline bool isASCIIUpper(CharType c)
-{
-    return c >= 'A' && c <= 'Z';
-}
-
-template<typename CharType> inline CharType toASCIILower(CharType c)
-{
-    return c | ((c >= 'A' && c <= 'Z') << 5);
-}
-
-template<typename CharType> inline CharType toASCIILowerUnchecked(CharType character)
-{
-    // This function can be used for comparing any input character
-    // to a lowercase English character. The isASCIIAlphaCaselessEqual
-    // below should be used for regular comparison of ASCII alpha
-    // characters, but switch statements in CSS tokenizer require
-    // direct use of this function.
-    return character | 0x20;
-}
-
-template<typename CharType> inline CharType toASCIIUpper(CharType c)
-{
-    return c & ~((c >= 'a' && c <= 'z') << 5);
-}
-
-template<typename CharType> inline int toASCIIHexValue(CharType c)
-{
-    ASSERT(isASCIIHexDigit(c));
-    return c < 'A' ? c - '0' : (c - 'A' + 10) & 0xF;
-}
-
-template<typename CharType> inline int toASCIIHexValue(CharType upperValue, CharType lowerValue)
-{
-    ASSERT(isASCIIHexDigit(upperValue) && isASCIIHexDigit(lowerValue));
-    return ((toASCIIHexValue(upperValue) << 4) & 0xF0) | toASCIIHexValue(lowerValue);
-}
-
-inline char lowerNibbleToASCIIHexDigit(char c)
-{
-    char nibble = c & 0xF;
-    return nibble < 10 ? '0' + nibble : 'A' + nibble - 10;
-}
-
-inline char upperNibbleToASCIIHexDigit(char c)
-{
-    char nibble = (c >> 4) & 0xF;
-    return nibble < 10 ? '0' + nibble : 'A' + nibble - 10;
-}
-
-template<typename CharType> inline bool isASCIIAlphaCaselessEqual(CharType cssCharacter, char character)
-{
-    // This function compares a (preferrably) constant ASCII
-    // lowercase letter to any input character.
-    ASSERT(character >= 'a' && character <= 'z');
-    return LIKELY(toASCIILowerUnchecked(cssCharacter) == character);
-}
-
-}
-
-using WTF::isASCII;
-using WTF::isASCIIAlpha;
-using WTF::isASCIIAlphanumeric;
-using WTF::isASCIIDigit;
-using WTF::isASCIIHexDigit;
-using WTF::isASCIILower;
-using WTF::isASCIIOctalDigit;
-using WTF::isASCIIPrintable;
-using WTF::isASCIISpace;
-using WTF::isASCIIUpper;
-using WTF::toASCIIHexValue;
-using WTF::toASCIILower;
-using WTF::toASCIILowerUnchecked;
-using WTF::toASCIIUpper;
-using WTF::lowerNibbleToASCIIHexDigit;
-using WTF::upperNibbleToASCIIHexDigit;
-using WTF::isASCIIAlphaCaselessEqual;
-
-#endif