ES6: Add support for explicit octal and binary integer literals

src/char-predicates-inl.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * 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
@@ skipping 53 matching lines @@
   return IsInRange(c, '0', '9');
 }
 
 
 inline bool IsHexDigit(uc32 c) {
   // ECMA-262, 3rd, 7.6 (p 15)
   return IsDecimalDigit(c) || IsInRange(AsciiAlphaToLower(c), 'a', 'f');
 }
 
 
+inline bool IsOctalDigit(uc32 c) {
+  // ECMA-262, 6th, 7.8.3
+  return IsInRange(c, '0', '7');
+}
+
+
+inline bool IsBinaryDigit(uc32 c) {
+  // ECMA-262, 6th, 7.8.3
+  return c == '0' || c == '1';
+}
+
+
 inline bool IsRegExpWord(uc16 c) {
   return IsInRange(AsciiAlphaToLower(c), 'a', 'z')
       || IsDecimalDigit(c)
       || (c == '_');
 }
 
 
 inline bool IsRegExpNewline(uc16 c) {
   switch (c) {
     //   CR           LF           LS           PS
     case 0x000A: case 0x000D: case 0x2028: case 0x2029:
       return false;
     default:
       return true;
   }
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_CHAR_PREDICATES_INL_H_