ES6: Add support for explicit octal and binary integer literals

src/conversions.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 34 matching lines @@
 const int kMaxSignificantDigits = 772;
 
 
 inline bool isDigit(int x, int radix) {
   return (x >= '0' && x <= '9' && x < '0' + radix)
       || (radix > 10 && x >= 'a' && x < 'a' + radix - 10)
       || (radix > 10 && x >= 'A' && x < 'A' + radix - 10);
 }
 
 
+inline bool isBinaryDigit(int x) {
+  return x == '0' || x == '1';
+}
+
+
 // The fast double-to-(unsigned-)int conversion routine does not guarantee
 // rounding towards zero.
 // For NaN and values outside the int range, return INT_MIN or INT_MAX.
 inline int FastD2IChecked(double x) {
   if (!(x >= INT_MIN)) return INT_MIN;  // Negation to catch NaNs.
   if (x > INT_MAX) return INT_MAX;
   return static_cast<int>(x);
 }
 
 
@@ skipping 36 matching lines @@
 inline uint32_t DoubleToUint32(double x) {
   return static_cast<uint32_t>(DoubleToInt32(x));
 }
 
 
 // Enumeration for allowing octals and ignoring junk when converting
 // strings to numbers.
 enum ConversionFlags {
   NO_FLAGS = 0,
   ALLOW_HEX = 1,
-  ALLOW_OCTALS = 2,
-  ALLOW_TRAILING_JUNK = 4
+  ALLOW_OCTAL = 2,
+  ALLOW_IMPLICIT_OCTAL = 4,
+  ALLOW_BINARY = 8,
+  ALLOW_TRAILING_JUNK = 16
 };
 
 
 // Converts a string into a double value according to ECMA-262 9.3.1
 double StringToDouble(UnicodeCache* unicode_cache,
                       Vector<const char> str,
                       int flags,
                       double empty_string_val = 0);
 double StringToDouble(UnicodeCache* unicode_cache,
                       Vector<const uc16> str,
@@ skipping 19 matching lines @@
 // Additional number to string conversions for the number type.
 // The caller is responsible for calling free on the returned pointer.
 char* DoubleToFixedCString(double value, int f);
 char* DoubleToExponentialCString(double value, int f);
 char* DoubleToPrecisionCString(double value, int f);
 char* DoubleToRadixCString(double value, int radix);
 
 } }  // namespace v8::internal
 
 #endif  // V8_CONVERSIONS_H_