wtf reformat test

third_party/WebKit/Source/wtf/text/TextCodecUTF8.cpp

 /*
  * Copyright (C) 2004, 2006, 2008, 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
@@ skipping 18 matching lines @@
 #include "wtf/text/CharacterNames.h"
 #include "wtf/text/StringBuffer.h"
 #include "wtf/text/TextCodecASCIIFastPath.h"
 
 namespace WTF {
 
 using namespace WTF::Unicode;
 
 const int nonCharacter = -1;
 
-PassOwnPtr<TextCodec> TextCodecUTF8::create(const TextEncoding&, const void*)
-{
-    return adoptPtr(new TextCodecUTF8);
-}
-
-void TextCodecUTF8::registerEncodingNames(EncodingNameRegistrar registrar)
-{
-    registrar("UTF-8", "UTF-8");
-
-    // Additional aliases that originally were present in the encoding
-    // table in WebKit on Macintosh, and subsequently added by
-    // TextCodecICU. Perhaps we can prove some are not used on the web
-    // and remove them.
-    registrar("unicode11utf8", "UTF-8");
-    registrar("unicode20utf8", "UTF-8");
-    registrar("utf8", "UTF-8");
-    registrar("x-unicode20utf8", "UTF-8");
-
-    // Additional aliases present in the WHATWG Encoding Standard (http://encoding.spec.whatwg.org/)
-    // and Firefox (24), but not in ICU 4.6.
-    registrar("unicode-1-1-utf-8", "UTF-8");
-}
-
-void TextCodecUTF8::registerCodecs(TextCodecRegistrar registrar)
-{
-    registrar("UTF-8", create, 0);
-}
-
-static inline int nonASCIISequenceLength(uint8_t firstByte)
-{
-    static const uint8_t lengths[256] = {
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-        3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-        4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
-    };
-    return lengths[firstByte];
-}
-
-static inline int decodeNonASCIISequence(const uint8_t* sequence, unsigned length)
-{
-    ASSERT(!isASCII(sequence[0]));
-    if (length == 2) {
-        ASSERT(sequence[0] <= 0xDF);
-        if (sequence[0] < 0xC2)
-            return nonCharacter;
+PassOwnPtr<TextCodec> TextCodecUTF8::create(const TextEncoding&, const void*) {
+  return adoptPtr(new TextCodecUTF8);
+}
+
+void TextCodecUTF8::registerEncodingNames(EncodingNameRegistrar registrar) {
+  registrar("UTF-8", "UTF-8");
+
+  // Additional aliases that originally were present in the encoding
+  // table in WebKit on Macintosh, and subsequently added by
+  // TextCodecICU. Perhaps we can prove some are not used on the web
+  // and remove them.
+  registrar("unicode11utf8", "UTF-8");
+  registrar("unicode20utf8", "UTF-8");
+  registrar("utf8", "UTF-8");
+  registrar("x-unicode20utf8", "UTF-8");
+
+  // Additional aliases present in the WHATWG Encoding Standard (http://encoding.spec.whatwg.org/)
+  // and Firefox (24), but not in ICU 4.6.
+  registrar("unicode-1-1-utf-8", "UTF-8");
+}
+
+void TextCodecUTF8::registerCodecs(TextCodecRegistrar registrar) {
+  registrar("UTF-8", create, 0);
+}
+
+static inline int nonASCIISequenceLength(uint8_t firstByte) {
+  static const uint8_t lengths[256] = {
+      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+      0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+      2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+      2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+      2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+      2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+      4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+  return lengths[firstByte];
+}
+
+static inline int decodeNonASCIISequence(const uint8_t* sequence,
+                                         unsigned length) {
+  ASSERT(!isASCII(sequence[0]));
+  if (length == 2) {
+    ASSERT(sequence[0] <= 0xDF);
+    if (sequence[0] < 0xC2)
+      return nonCharacter;
+    if (sequence[1] < 0x80 || sequence[1] > 0xBF)
+      return nonCharacter;
+    return ((sequence[0] << 6) + sequence[1]) - 0x00003080;
+  }
+  if (length == 3) {
+    ASSERT(sequence[0] >= 0xE0 && sequence[0] <= 0xEF);
+    switch (sequence[0]) {
+      case 0xE0:
+        if (sequence[1] < 0xA0 || sequence[1] > 0xBF)
+          return nonCharacter;
+        break;
+      case 0xED:
+        if (sequence[1] < 0x80 || sequence[1] > 0x9F)
+          return nonCharacter;
+        break;
+      default:
         if (sequence[1] < 0x80 || sequence[1] > 0xBF)
-            return nonCharacter;
-        return ((sequence[0] << 6) + sequence[1]) - 0x00003080;
-    }
-    if (length == 3) {
-        ASSERT(sequence[0] >= 0xE0 && sequence[0] <= 0xEF);
-        switch (sequence[0]) {
-        case 0xE0:
-            if (sequence[1] < 0xA0 || sequence[1] > 0xBF)
-                return nonCharacter;
+          return nonCharacter;
+    }
+    if (sequence[2] < 0x80 || sequence[2] > 0xBF)
+      return nonCharacter;
+    return ((sequence[0] << 12) + (sequence[1] << 6) + sequence[2]) -
+           0x000E2080;
+  }
+  ASSERT(length == 4);
+  ASSERT(sequence[0] >= 0xF0 && sequence[0] <= 0xF4);
+  switch (sequence[0]) {
+    case 0xF0:
+      if (sequence[1] < 0x90 || sequence[1] > 0xBF)
+        return nonCharacter;
+      break;
+    case 0xF4:
+      if (sequence[1] < 0x80 || sequence[1] > 0x8F)
+        return nonCharacter;
+      break;
+    default:
+      if (sequence[1] < 0x80 || sequence[1] > 0xBF)
+        return nonCharacter;
+  }
+  if (sequence[2] < 0x80 || sequence[2] > 0xBF)
+    return nonCharacter;
+  if (sequence[3] < 0x80 || sequence[3] > 0xBF)
+    return nonCharacter;
+  return ((sequence[0] << 18) + (sequence[1] << 12) + (sequence[2] << 6) +
+          sequence[3]) -
+         0x03C82080;
+}
+
+static inline UChar* appendCharacter(UChar* destination, int character) {
+  ASSERT(character != nonCharacter);
+  ASSERT(!U_IS_SURROGATE(character));
+  if (U_IS_BMP(character)) {
+    *destination++ = static_cast<UChar>(character);
+  } else {
+    *destination++ = U16_LEAD(character);
+    *destination++ = U16_TRAIL(character);
+  }
+  return destination;
+}
+
+void TextCodecUTF8::consumePartialSequenceByte() {
+  --m_partialSequenceSize;
+  memmove(m_partialSequence, m_partialSequence + 1, m_partialSequenceSize);
+}
+
+void TextCodecUTF8::handleError(UChar*& destination,
+                                bool stopOnError,
+                                bool& sawError) {
+  sawError = true;
+  if (stopOnError)
+    return;
+  // Each error generates a replacement character and consumes one byte.
+  *destination++ = replacementCharacter;
+  consumePartialSequenceByte();
+}
+
+template <>
+bool TextCodecUTF8::handlePartialSequence<LChar>(LChar*& destination,
+                                                 const uint8_t*& source,
+                                                 const uint8_t* end,
+                                                 bool flush,
+                                                 bool,
+                                                 bool&) {
+  ASSERT(m_partialSequenceSize);
+  do {
+    if (isASCII(m_partialSequence[0])) {
+      *destination++ = m_partialSequence[0];
+      consumePartialSequenceByte();
+      continue;
+    }
+    int count = nonASCIISequenceLength(m_partialSequence[0]);
+    if (!count)
+      return true;
+
+    if (count > m_partialSequenceSize) {
+      if (count - m_partialSequenceSize > end - source) {
+        if (!flush) {
+          // The new data is not enough to complete the sequence, so
+          // add it to the existing partial sequence.
+          memcpy(m_partialSequence + m_partialSequenceSize, source,
+                 end - source);
+          m_partialSequenceSize += end - source;
+          return false;
+        }
+        // An incomplete partial sequence at the end is an error, but it will create
+        // a 16 bit string due to the replacementCharacter. Let the 16 bit path handle
+        // the error.
+        return true;
+      }
+      memcpy(m_partialSequence + m_partialSequenceSize, source,
+             count - m_partialSequenceSize);
+      source += count - m_partialSequenceSize;
+      m_partialSequenceSize = count;
+    }
+    int character = decodeNonASCIISequence(m_partialSequence, count);
+    if (character & ~0xff)
+      return true;
+
+    m_partialSequenceSize -= count;
+    *destination++ = static_cast<LChar>(character);
+  } while (m_partialSequenceSize);
+
+  return false;
+}
+
+template <>
+bool TextCodecUTF8::handlePartialSequence<UChar>(UChar*& destination,
+                                                 const uint8_t*& source,
+                                                 const uint8_t* end,
+                                                 bool flush,
+                                                 bool stopOnError,
+                                                 bool& sawError) {
+  ASSERT(m_partialSequenceSize);
+  do {
+    if (isASCII(m_partialSequence[0])) {
+      *destination++ = m_partialSequence[0];
+      consumePartialSequenceByte();
+      continue;
+    }
+    int count = nonASCIISequenceLength(m_partialSequence[0]);
+    if (!count) {
+      handleError(destination, stopOnError, sawError);
+      if (stopOnError)
+        return false;
+      continue;
+    }
+    if (count > m_partialSequenceSize) {
+      if (count - m_partialSequenceSize > end - source) {
+        if (!flush) {
+          // The new data is not enough to complete the sequence, so
+          // add it to the existing partial sequence.
+          memcpy(m_partialSequence + m_partialSequenceSize, source,
+                 end - source);
+          m_partialSequenceSize += end - source;
+          return false;
+        }
+        // An incomplete partial sequence at the end is an error.
+        handleError(destination, stopOnError, sawError);
+        if (stopOnError)
+          return false;
+        continue;
+      }
+      memcpy(m_partialSequence + m_partialSequenceSize, source,
+             count - m_partialSequenceSize);
+      source += count - m_partialSequenceSize;
+      m_partialSequenceSize = count;
+    }
+    int character = decodeNonASCIISequence(m_partialSequence, count);
+    if (character == nonCharacter) {
+      handleError(destination, stopOnError, sawError);
+      if (stopOnError)
+        return false;
+      continue;
+    }
+
+    m_partialSequenceSize -= count;
+    destination = appendCharacter(destination, character);
+  } while (m_partialSequenceSize);
+
+  return false;
+}
+
+String TextCodecUTF8::decode(const char* bytes,
+                             size_t length,
+                             FlushBehavior flush,
+                             bool stopOnError,
+                             bool& sawError) {
+  // Each input byte might turn into a character.
+  // That includes all bytes in the partial-sequence buffer because
+  // each byte in an invalid sequence will turn into a replacement character.
+  StringBuffer<LChar> buffer(m_partialSequenceSize + length);
+
+  const uint8_t* source = reinterpret_cast<const uint8_t*>(bytes);
+  const uint8_t* end = source + length;
+  const uint8_t* alignedEnd = alignToMachineWord(end);
+  LChar* destination = buffer.characters();
+
+  do {
+    if (m_partialSequenceSize) {
+      // Explicitly copy destination and source pointers to avoid taking pointers to the
+      // local variables, which may harm code generation by disabling some optimizations
+      // in some compilers.
+      LChar* destinationForHandlePartialSequence = destination;
+      const uint8_t* sourceForHandlePartialSequence = source;
+      if (handlePartialSequence(destinationForHandlePartialSequence,
+                                sourceForHandlePartialSequence, end, flush,
+                                stopOnError, sawError)) {
+        source = sourceForHandlePartialSequence;
+        goto upConvertTo16Bit;
+      }
+      destination = destinationForHandlePartialSequence;
+      source = sourceForHandlePartialSequence;
+      if (m_partialSequenceSize)
+        break;
+    }
+
+    while (source < end) {
+      if (isASCII(*source)) {
+        // Fast path for ASCII. Most UTF-8 text will be ASCII.
+        if (isAlignedToMachineWord(source)) {
+          while (source < alignedEnd) {
+            MachineWord chunk =
+                *reinterpret_cast_ptr<const MachineWord*>(source);
+            if (!isAllASCII<LChar>(chunk))
+              break;
+            copyASCIIMachineWord(destination, source);
+            source += sizeof(MachineWord);
+            destination += sizeof(MachineWord);
+          }
+          if (source == end)
             break;
-        case 0xED:
-            if (sequence[1] < 0x80 || sequence[1] > 0x9F)
-                return nonCharacter;
+          if (!isASCII(*source))
+            continue;
+        }
+        *destination++ = *source++;
+        continue;
+      }
+      int count = nonASCIISequenceLength(*source);
+      int character;
+      if (count == 0) {
+        character = nonCharacter;
+      } else {
+        if (count > end - source) {
+          ASSERT_WITH_SECURITY_IMPLICATION(
+              end - source < static_cast<ptrdiff_t>(sizeof(m_partialSequence)));
+          ASSERT(!m_partialSequenceSize);
+          m_partialSequenceSize = end - source;
+          memcpy(m_partialSequence, source, m_partialSequenceSize);
+          source = end;
+          break;
+        }
+        character = decodeNonASCIISequence(source, count);
+      }
+      if (character == nonCharacter) {
+        sawError = true;
+        if (stopOnError)
+          break;
+
+        goto upConvertTo16Bit;
+      }
+      if (character > 0xff)
+        goto upConvertTo16Bit;
+
+      source += count;
+      *destination++ = static_cast<LChar>(character);
+    }
+  } while (flush && m_partialSequenceSize);
+
+  buffer.shrink(destination - buffer.characters());
+
+  return String::adopt(buffer);
+
+upConvertTo16Bit:
+  StringBuffer<UChar> buffer16(m_partialSequenceSize + length);
+
+  UChar* destination16 = buffer16.characters();
+
+  // Copy the already converted characters
+  for (LChar* converted8 = buffer.characters(); converted8 < destination;)
+    *destination16++ = *converted8++;
+
+  do {
+    if (m_partialSequenceSize) {
+      // Explicitly copy destination and source pointers to avoid taking pointers to the
+      // local variables, which may harm code generation by disabling some optimizations
+      // in some compilers.
+      UChar* destinationForHandlePartialSequence = destination16;
+      const uint8_t* sourceForHandlePartialSequence = source;
+      handlePartialSequence(destinationForHandlePartialSequence,
+                            sourceForHandlePartialSequence, end, flush,
+                            stopOnError, sawError);
+      destination16 = destinationForHandlePartialSequence;
+      source = sourceForHandlePartialSequence;
+      if (m_partialSequenceSize)
+        break;
+    }
+
+    while (source < end) {
+      if (isASCII(*source)) {
+        // Fast path for ASCII. Most UTF-8 text will be ASCII.
+        if (isAlignedToMachineWord(source)) {
+          while (source < alignedEnd) {
+            MachineWord chunk =
+                *reinterpret_cast_ptr<const MachineWord*>(source);
+            if (!isAllASCII<LChar>(chunk))
+              break;
+            copyASCIIMachineWord(destination16, source);
+            source += sizeof(MachineWord);
+            destination16 += sizeof(MachineWord);
+          }
+          if (source == end)
             break;
-        default:
-            if (sequence[1] < 0x80 || sequence[1] > 0xBF)
-                return nonCharacter;
-        }
-        if (sequence[2] < 0x80 || sequence[2] > 0xBF)
-            return nonCharacter;
-        return ((sequence[0] << 12) + (sequence[1] << 6) + sequence[2]) - 0x000E2080;
-    }
-    ASSERT(length == 4);
-    ASSERT(sequence[0] >= 0xF0 && sequence[0] <= 0xF4);
-    switch (sequence[0]) {
-    case 0xF0:
-        if (sequence[1] < 0x90 || sequence[1] > 0xBF)
-            return nonCharacter;
-        break;
-    case 0xF4:
-        if (sequence[1] < 0x80 || sequence[1] > 0x8F)
-            return nonCharacter;
-        break;
-    default:
-        if (sequence[1] < 0x80 || sequence[1] > 0xBF)
-            return nonCharacter;
-    }
-    if (sequence[2] < 0x80 || sequence[2] > 0xBF)
-        return nonCharacter;
-    if (sequence[3] < 0x80 || sequence[3] > 0xBF)
-        return nonCharacter;
-    return ((sequence[0] << 18) + (sequence[1] << 12) + (sequence[2] << 6) + sequence[3]) - 0x03C82080;
-}
-
-static inline UChar* appendCharacter(UChar* destination, int character)
-{
-    ASSERT(character != nonCharacter);
-    ASSERT(!U_IS_SURROGATE(character));
-    if (U_IS_BMP(character)) {
-        *destination++ = static_cast<UChar>(character);
-    } else {
-        *destination++ = U16_LEAD(character);
-        *destination++ = U16_TRAIL(character);
-    }
-    return destination;
-}
-
-void TextCodecUTF8::consumePartialSequenceByte()
-{
-    --m_partialSequenceSize;
-    memmove(m_partialSequence, m_partialSequence + 1, m_partialSequenceSize);
-}
-
-void TextCodecUTF8::handleError(UChar*& destination, bool stopOnError, bool& sawError)
-{
-    sawError = true;
-    if (stopOnError)
-        return;
-    // Each error generates a replacement character and consumes one byte.
-    *destination++ = replacementCharacter;
-    consumePartialSequenceByte();
-}
-
-template <>
-bool TextCodecUTF8::handlePartialSequence<LChar>(LChar*& destination, const uint8_t*& source, const uint8_t* end, bool flush, bool, bool&)
-{
-    ASSERT(m_partialSequenceSize);
-    do {
-        if (isASCII(m_partialSequence[0])) {
-            *destination++ = m_partialSequence[0];
-            consumePartialSequenceByte();
+          if (!isASCII(*source))
             continue;
         }
-        int count = nonASCIISequenceLength(m_partialSequence[0]);
-        if (!count)
-            return true;
-
-        if (count > m_partialSequenceSize) {
-            if (count - m_partialSequenceSize > end - source) {
-                if (!flush) {
-                    // The new data is not enough to complete the sequence, so
-                    // add it to the existing partial sequence.
-                    memcpy(m_partialSequence + m_partialSequenceSize, source, end - source);
-                    m_partialSequenceSize += end - source;
-                    return false;
-                }
-                // An incomplete partial sequence at the end is an error, but it will create
-                // a 16 bit string due to the replacementCharacter. Let the 16 bit path handle
-                // the error.
-                return true;
-            }
-            memcpy(m_partialSequence + m_partialSequenceSize, source, count - m_partialSequenceSize);
-            source += count - m_partialSequenceSize;
-            m_partialSequenceSize = count;
-        }
-        int character = decodeNonASCIISequence(m_partialSequence, count);
-        if (character & ~0xff)
-            return true;
-
-        m_partialSequenceSize -= count;
-        *destination++ = static_cast<LChar>(character);
-    } while (m_partialSequenceSize);
-
-    return false;
-}
-
-template <>
-bool TextCodecUTF8::handlePartialSequence<UChar>(UChar*& destination, const uint8_t*& source, const uint8_t* end, bool flush, bool stopOnError, bool& sawError)
-{
-    ASSERT(m_partialSequenceSize);
-    do {
-        if (isASCII(m_partialSequence[0])) {
-            *destination++ = m_partialSequence[0];
-            consumePartialSequenceByte();
-            continue;
-        }
-        int count = nonASCIISequenceLength(m_partialSequence[0]);
-        if (!count) {
-            handleError(destination, stopOnError, sawError);
-            if (stopOnError)
-                return false;
-            continue;
-        }
-        if (count > m_partialSequenceSize) {
-            if (count - m_partialSequenceSize > end - source) {
-                if (!flush) {
-                    // The new data is not enough to complete the sequence, so
-                    // add it to the existing partial sequence.
-                    memcpy(m_partialSequence + m_partialSequenceSize, source, end - source);
-                    m_partialSequenceSize += end - source;
-                    return false;
-                }
-                // An incomplete partial sequence at the end is an error.
-                handleError(destination, stopOnError, sawError);
-                if (stopOnError)
-                    return false;
-                continue;
-            }
-            memcpy(m_partialSequence + m_partialSequenceSize, source, count - m_partialSequenceSize);
-            source += count - m_partialSequenceSize;
-            m_partialSequenceSize = count;
-        }
-        int character = decodeNonASCIISequence(m_partialSequence, count);
-        if (character == nonCharacter) {
-            handleError(destination, stopOnError, sawError);
-            if (stopOnError)
-                return false;
-            continue;
-        }
-
-        m_partialSequenceSize -= count;
-        destination = appendCharacter(destination, character);
-    } while (m_partialSequenceSize);
-
-    return false;
-}
-
-String TextCodecUTF8::decode(const char* bytes, size_t length, FlushBehavior flush, bool stopOnError, bool& sawError)
-{
-    // Each input byte might turn into a character.
-    // That includes all bytes in the partial-sequence buffer because
-    // each byte in an invalid sequence will turn into a replacement character.
-    StringBuffer<LChar> buffer(m_partialSequenceSize + length);
-
-    const uint8_t* source = reinterpret_cast<const uint8_t*>(bytes);
-    const uint8_t* end = source + length;
-    const uint8_t* alignedEnd = alignToMachineWord(end);
-    LChar* destination = buffer.characters();
-
-    do {
-        if (m_partialSequenceSize) {
-            // Explicitly copy destination and source pointers to avoid taking pointers to the
-            // local variables, which may harm code generation by disabling some optimizations
-            // in some compilers.
-            LChar* destinationForHandlePartialSequence = destination;
-            const uint8_t* sourceForHandlePartialSequence = source;
-            if (handlePartialSequence(destinationForHandlePartialSequence, sourceForHandlePartialSequence, end, flush, stopOnError, sawError)) {
-                source = sourceForHandlePartialSequence;
-                goto upConvertTo16Bit;
-            }
-            destination = destinationForHandlePartialSequence;
-            source = sourceForHandlePartialSequence;
-            if (m_partialSequenceSize)
-                break;
-        }
-
-        while (source < end) {
-            if (isASCII(*source)) {
-                // Fast path for ASCII. Most UTF-8 text will be ASCII.
-                if (isAlignedToMachineWord(source)) {
-                    while (source < alignedEnd) {
-                        MachineWord chunk = *reinterpret_cast_ptr<const MachineWord*>(source);
-                        if (!isAllASCII<LChar>(chunk))
-                            break;
-                        copyASCIIMachineWord(destination, source);
-                        source += sizeof(MachineWord);
-                        destination += sizeof(MachineWord);
-                    }
-                    if (source == end)
-                        break;
-                    if (!isASCII(*source))
-                        continue;
-                }
-                *destination++ = *source++;
-                continue;
-            }
-            int count = nonASCIISequenceLength(*source);
-            int character;
-            if (count == 0) {
-                character = nonCharacter;
-            } else {
-                if (count > end - source) {
-                    ASSERT_WITH_SECURITY_IMPLICATION(end - source < static_cast<ptrdiff_t>(sizeof(m_partialSequence)));
-                    ASSERT(!m_partialSequenceSize);
-                    m_partialSequenceSize = end - source;
-                    memcpy(m_partialSequence, source, m_partialSequenceSize);
-                    source = end;
-                    break;
-                }
-                character = decodeNonASCIISequence(source, count);
-            }
-            if (character == nonCharacter) {
-                sawError = true;
-                if (stopOnError)
-                    break;
-
-                goto upConvertTo16Bit;
-            }
-            if (character > 0xff)
-                goto upConvertTo16Bit;
-
-            source += count;
-            *destination++ = static_cast<LChar>(character);
-        }
-    } while (flush && m_partialSequenceSize);
-
-    buffer.shrink(destination - buffer.characters());
-
-    return String::adopt(buffer);
-
-upConvertTo16Bit:
-    StringBuffer<UChar> buffer16(m_partialSequenceSize + length);
-
-    UChar* destination16 = buffer16.characters();
-
-    // Copy the already converted characters
-    for (LChar* converted8 = buffer.characters(); converted8 < destination;)
-        *destination16++ = *converted8++;
-
-    do {
-        if (m_partialSequenceSize) {
-            // Explicitly copy destination and source pointers to avoid taking pointers to the
-            // local variables, which may harm code generation by disabling some optimizations
-            // in some compilers.
-            UChar* destinationForHandlePartialSequence = destination16;
-            const uint8_t* sourceForHandlePartialSequence = source;
-            handlePartialSequence(destinationForHandlePartialSequence, sourceForHandlePartialSequence, end, flush, stopOnError, sawError);
-            destination16 = destinationForHandlePartialSequence;
-            source = sourceForHandlePartialSequence;
-            if (m_partialSequenceSize)
-                break;
-        }
-
-        while (source < end) {
-            if (isASCII(*source)) {
-                // Fast path for ASCII. Most UTF-8 text will be ASCII.
-                if (isAlignedToMachineWord(source)) {
-                    while (source < alignedEnd) {
-                        MachineWord chunk = *reinterpret_cast_ptr<const MachineWord*>(source);
-                        if (!isAllASCII<LChar>(chunk))
-                            break;
-                        copyASCIIMachineWord(destination16, source);
-                        source += sizeof(MachineWord);
-                        destination16 += sizeof(MachineWord);
-                    }
-                    if (source == end)
-                        break;
-                    if (!isASCII(*source))
-                        continue;
-                }
-                *destination16++ = *source++;
-                continue;
-            }
-            int count = nonASCIISequenceLength(*source);
-            int character;
-            if (count == 0) {
-                character = nonCharacter;
-            } else {
-                if (count > end - source) {
-                    ASSERT_WITH_SECURITY_IMPLICATION(end - source < static_cast<ptrdiff_t>(sizeof(m_partialSequence)));
-                    ASSERT(!m_partialSequenceSize);
-                    m_partialSequenceSize = end - source;
-                    memcpy(m_partialSequence, source, m_partialSequenceSize);
-                    source = end;
-                    break;
-                }
-                character = decodeNonASCIISequence(source, count);
-            }
-            if (character == nonCharacter) {
-                sawError = true;
-                if (stopOnError)
-                    break;
-                // Each error generates a replacement character and consumes one byte.
-                *destination16++ = replacementCharacter;
-                ++source;
-                continue;
-            }
-            source += count;
-            destination16 = appendCharacter(destination16, character);
-        }
-    } while (flush && m_partialSequenceSize);
-
-    buffer16.shrink(destination16 - buffer16.characters());
-
-    return String::adopt(buffer16);
-}
-
-template<typename CharType>
-CString TextCodecUTF8::encodeCommon(const CharType* characters, size_t length)
-{
-    // The maximum number of UTF-8 bytes needed per UTF-16 code unit is 3.
-    // BMP characters take only one UTF-16 code unit and can take up to 3 bytes (3x).
-    // Non-BMP characters take two UTF-16 code units and can take up to 4 bytes (2x).
-    if (length > std::numeric_limits<size_t>::max() / 3)
-        CRASH();
-    Vector<uint8_t> bytes(length * 3);
-
-    size_t i = 0;
-    size_t bytesWritten = 0;
-    while (i < length) {
-        UChar32 character;
-        U16_NEXT(characters, i, length, character);
-        // U16_NEXT will simply emit a surrogate code point if an unmatched surrogate
-        // is encountered; we must convert it to a U+FFFD (REPLACEMENT CHARACTER) here.
-        if (0xD800 <= character && character <= 0xDFFF)
-            character = replacementCharacter;
-        U8_APPEND_UNSAFE(bytes.data(), bytesWritten, character);
-    }
-
-    return CString(reinterpret_cast<char*>(bytes.data()), bytesWritten);
-}
-
-CString TextCodecUTF8::encode(const UChar* characters, size_t length, UnencodableHandling)
-{
-    return encodeCommon(characters, length);
-}
-
-CString TextCodecUTF8::encode(const LChar* characters, size_t length, UnencodableHandling)
-{
-    return encodeCommon(characters, length);
-}
-
-} // namespace WTF
+        *destination16++ = *source++;
+        continue;
+      }
+      int count = nonASCIISequenceLength(*source);
+      int character;
+      if (count == 0) {
+        character = nonCharacter;
+      } else {
+        if (count > end - source) {
+          ASSERT_WITH_SECURITY_IMPLICATION(
+              end - source < static_cast<ptrdiff_t>(sizeof(m_partialSequence)));
+          ASSERT(!m_partialSequenceSize);
+          m_partialSequenceSize = end - source;
+          memcpy(m_partialSequence, source, m_partialSequenceSize);
+          source = end;
+          break;
+        }
+        character = decodeNonASCIISequence(source, count);
+      }
+      if (character == nonCharacter) {
+        sawError = true;
+        if (stopOnError)
+          break;
+        // Each error generates a replacement character and consumes one byte.
+        *destination16++ = replacementCharacter;
+        ++source;
+        continue;
+      }
+      source += count;
+      destination16 = appendCharacter(destination16, character);
+    }
+  } while (flush && m_partialSequenceSize);
+
+  buffer16.shrink(destination16 - buffer16.characters());
+
+  return String::adopt(buffer16);
+}
+
+template <typename CharType>
+CString TextCodecUTF8::encodeCommon(const CharType* characters, size_t length) {
+  // The maximum number of UTF-8 bytes needed per UTF-16 code unit is 3.
+  // BMP characters take only one UTF-16 code unit and can take up to 3 bytes (3x).
+  // Non-BMP characters take two UTF-16 code units and can take up to 4 bytes (2x).
+  if (length > std::numeric_limits<size_t>::max() / 3)
+    CRASH();
+  Vector<uint8_t> bytes(length * 3);
+
+  size_t i = 0;
+  size_t bytesWritten = 0;
+  while (i < length) {
+    UChar32 character;
+    U16_NEXT(characters, i, length, character);
+    // U16_NEXT will simply emit a surrogate code point if an unmatched surrogate
+    // is encountered; we must convert it to a U+FFFD (REPLACEMENT CHARACTER) here.
+    if (0xD800 <= character && character <= 0xDFFF)
+      character = replacementCharacter;
+    U8_APPEND_UNSAFE(bytes.data(), bytesWritten, character);
+  }
+
+  return CString(reinterpret_cast<char*>(bytes.data()), bytesWritten);
+}
+
+CString TextCodecUTF8::encode(const UChar* characters,
+                              size_t length,
+                              UnencodableHandling) {
+  return encodeCommon(characters, length);
+}
+
+CString TextCodecUTF8::encode(const LChar* characters,
+                              size_t length,
+                              UnencodableHandling) {
+  return encodeCommon(characters, length);
+}
+
+}  // namespace WTF