Change scanner buffers to not use utf-8.

src/scanner-base.cc

Index: src/scanner-base.cc
diff --git a/src/scanner-base.cc b/src/scanner-base.cc
index b26fee01a72351c1c93fc42bc2522ed53f221a60..1babaebb17f189620579f599abfcf641fdcc0488 100644
--- a/src/scanner-base.cc
+++ b/src/scanner-base.cc
@@ -35,28 +35,6 @@ namespace v8 {
 namespace internal {
 
 // ----------------------------------------------------------------------------
-// LiteralCollector
-
-LiteralCollector::LiteralCollector()
-    : buffer_(kInitialCapacity), recording_(false) { }
-
-
-LiteralCollector::~LiteralCollector() {}
-
-
-void LiteralCollector::AddCharSlow(uc32 c) {
-  ASSERT(static_cast<unsigned>(c) > unibrow::Utf8::kMaxOneByteChar);
-  int length = unibrow::Utf8::Length(c);
-  Vector<char> block = buffer_.AddBlock(length, '\0');
-#ifdef DEBUG
-  int written_length = unibrow::Utf8::Encode(block.start(), c);
-  CHECK_EQ(length, written_length);
-#else
-  unibrow::Utf8::Encode(block.start(), c);
-#endif
-}
-
-// ----------------------------------------------------------------------------
 // Character predicates
 
 unibrow::Predicate<IdentifierStart, 128> ScannerConstants::kIsIdentifierStart;
@@ -256,7 +234,7 @@ Token::Value JavaScriptScanner::ScanHtmlComment() {
 
 
 void JavaScriptScanner::Scan() {
-  next_.literal_chars = Vector<const char>();
+  next_.literal_chars = NULL;
   Token::Value token;
   do {
     // Remember the position of the next token
@@ -561,7 +539,7 @@ Token::Value JavaScriptScanner::ScanString() {
   uc32 quote = c0_;
   Advance();  // consume quote
 
-  LiteralScope literal(this, kLiteralString);
+  LiteralScope literal(this);
   while (c0_ != quote && c0_ >= 0
          && !ScannerConstants::kIsLineTerminator.get(c0_)) {
     uc32 c = c0_;
@@ -592,7 +570,7 @@ Token::Value JavaScriptScanner::ScanNumber(bool seen_period) {
 
   enum { DECIMAL, HEX, OCTAL } kind = DECIMAL;
 
-  LiteralScope literal(this, kLiteralNumber);
+  LiteralScope literal(this);
   if (seen_period) {
     // we have already seen a decimal point of the float
     AddLiteralChar('.');
@@ -681,7 +659,7 @@ uc32 JavaScriptScanner::ScanIdentifierUnicodeEscape() {
 
 Token::Value JavaScriptScanner::ScanIdentifierOrKeyword() {
   ASSERT(ScannerConstants::kIsIdentifierStart.get(c0_));
-  LiteralScope literal(this, kLiteralIdentifier);
+  LiteralScope literal(this);
   KeywordMatcher keyword_match;
   // Scan identifier start character.
   if (c0_ == '\\') {
@@ -747,7 +725,7 @@ bool JavaScriptScanner::ScanRegExpPattern(bool seen_equal) {
   // Scan regular expression body: According to ECMA-262, 3rd, 7.8.5,
   // the scanner should pass uninterpreted bodies to the RegExp
   // constructor.
-  LiteralScope literal(this, kLiteralRegExp);
+  LiteralScope literal(this);
   if (seen_equal)
     AddLiteralChar('=');
 
@@ -773,7 +751,7 @@ bool JavaScriptScanner::ScanRegExpPattern(bool seen_equal) {
 
 bool JavaScriptScanner::ScanRegExpFlags() {
   // Scan regular expression flags.
-  LiteralScope literal(this, kLiteralRegExpFlags);
+  LiteralScope literal(this);
   while (ScannerConstants::kIsIdentifierPart.get(c0_)) {
     if (c0_ == '\\') {
       uc32 c = ScanIdentifierUnicodeEscape();