Allow numeric literals to be checked for a decimal point.

src/scanner.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Features shared by parsing and pre-parsing scanners.
 
 #include <stdint.h>
 
 #include <cmath>
 
@@ skipping 1407 matching lines @@
 
 double Scanner::DoubleValue() {
   DCHECK(is_literal_one_byte());
   return StringToDouble(
       unicode_cache_,
       literal_one_byte_string(),
       ALLOW_HEX | ALLOW_OCTAL | ALLOW_IMPLICIT_OCTAL | ALLOW_BINARY);
 }
 
 
+bool Scanner::ContainsDot() {
+  DCHECK(is_literal_one_byte());
+  Vector<const uint8_t> str = literal_one_byte_string();
+  return std::find(str.begin(), str.end(), '.') != str.end();
+}
+
+
 int Scanner::FindSymbol(DuplicateFinder* finder, int value) {
   if (is_literal_one_byte()) {
     return finder->AddOneByteSymbol(literal_one_byte_string(), value);
   }
   return finder->AddTwoByteSymbol(literal_two_byte_string(), value);
 }
 
 
 bool Scanner::SetBookmark() {
   if (c0_ != kNoBookmark && bookmark_c0_ == kNoBookmark &&
@@ skipping 179 matching lines @@
     backing_store_.Add(static_cast<uint8_t>((one_byte_length >> 7) | 0x80u));
   }
   backing_store_.Add(static_cast<uint8_t>(one_byte_length & 0x7f));
 
   backing_store_.AddBlock(bytes);
   return backing_store_.EndSequence().start();
 }
 
 }  // namespace internal
 }  // namespace v8