Add ascii() / latin1() / utf8() methods to AtomicString to avoid having to call string()

Source/wtf/text/WTFString.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007-2009 Torch Mobile, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 774 matching lines @@
 
 // Helper to write a three-byte UTF-8 code point to the buffer, caller must check room is available.
 static inline void putUTF8Triple(char*& buffer, UChar ch)
 {
     ASSERT(ch >= 0x0800);
     *buffer++ = static_cast<char>(((ch >> 12) & 0x0F) | 0xE0);
     *buffer++ = static_cast<char>(((ch >> 6) & 0x3F) | 0x80);
     *buffer++ = static_cast<char>((ch & 0x3F) | 0x80);
 }
 
-CString String::utf8(ConversionMode mode) const
+CString String::utf8(UTF8ConversionMode mode) const
 {
     unsigned length = this->length();
 
     if (!length)
         return CString("", 0);
 
     // Allocate a buffer big enough to hold all the characters
     // (an individual UTF-16 UChar can only expand to 3 UTF-8 bytes).
     // Optimization ideas, if we find this function is hot:
     //  * We could speculatively create a CStringBuffer to contain 'length'
@@ skipping 10 matching lines @@
     char* buffer = bufferVector.data();
 
     if (is8Bit()) {
         const LChar* characters = this->characters8();
 
         ConversionResult result = convertLatin1ToUTF8(&characters, characters + length, &buffer, buffer + bufferVector.size());
         ASSERT_UNUSED(result, result != targetExhausted); // (length * 3) should be sufficient for any conversion
     } else {
         const UChar* characters = this->characters16();
 
-        if (mode == StrictConversionReplacingUnpairedSurrogatesWithFFFD) {
+        if (mode == StrictUTF8ConversionReplacingUnpairedSurrogatesWithFFFD) {
             const UChar* charactersEnd = characters + length;
             char* bufferEnd = buffer + bufferVector.size();
             while (characters < charactersEnd) {
                 // Use strict conversion to detect unpaired surrogates.
                 ConversionResult result = convertUTF16ToUTF8(&characters, charactersEnd, &buffer, bufferEnd, true);
                 ASSERT(result != targetExhausted);
                 // Conversion fails when there is an unpaired surrogate.
                 // Put replacement character (U+FFFD) instead of the unpaired surrogate.
                 if (result != conversionOK) {
                     ASSERT((0xD800 <= *characters && *characters <= 0xDFFF));
                     // There should be room left, since one UChar hasn't been converted.
                     ASSERT((buffer + 3) <= bufferEnd);
                     putUTF8Triple(buffer, replacementCharacter);
                     ++characters;
                 }
             }
         } else {
-            bool strict = mode == StrictConversion;
+            bool strict = mode == StrictUTF8Conversion;
             ConversionResult result = convertUTF16ToUTF8(&characters, characters + length, &buffer, buffer + bufferVector.size(), strict);
             ASSERT(result != targetExhausted); // (length * 3) should be sufficient for any conversion
 
             // Only produced from strict conversion.
             if (result == sourceIllegal) {
                 ASSERT(strict);
                 return CString();
             }
 
             // Check for an unconverted high surrogate.
@@ skipping 411 matching lines @@
     buffer.append('\0');
     return buffer;
 }
 
 Vector<char> asciiDebug(String& string)
 {
     return asciiDebug(string.impl());
 }
 
 #endif