Rewrite MakeDay function from JS to C++.

src/macros.py

 # Copyright 2006-2009 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 55 matching lines @@
 const kUninitialized = -1;
 
 # Note: kDayZeroInJulianDay = ToJulianDay(1970, 0, 1).
 const kInvalidDate        = 'Invalid Date';
 const kDayZeroInJulianDay = 2440588;
 const kMonthMask          = 0x1e0;
 const kDayMask            = 0x01f;
 const kYearShift          = 9;
 const kMonthShift         = 5;
 
+# Limits for parts of the date, so that we support all the dates that
+# ECMA 262 - 15.9.1.1 requires us to, but at the same time be sure that
+# the date (days since 1970) is in SMI range.
+const kMinYear  = -1000000;
+const kMaxYear  = 1000000;
+const kMinMonth = -10000000;
+const kMaxMonth = 10000000;
+const kMinDate  = -100000000;
+const kMaxDate  = 100000000;
+
 # Type query macros.
 #
 # Note: We have special support for typeof(foo) === 'bar' in the compiler.
 #       It will *not* generate a runtime typeof call for the most important
 #       values of 'bar'.
 macro IS_NULL(arg)              = (arg === null);
 macro IS_NULL_OR_UNDEFINED(arg) = (arg == null);
 macro IS_UNDEFINED(arg)         = (typeof(arg) === 'undefined');
 macro IS_NUMBER(arg)            = (typeof(arg) === 'number');
 macro IS_STRING(arg)            = (typeof(arg) === 'string');
@@ skipping 49 matching lines @@
 macro MS_FROM_TIME(time) = (Modulo(time, 1000));
 
 # Last input and last subject of regexp matches.
 macro LAST_SUBJECT(array) = ((array)[1]);
 macro LAST_INPUT(array) = ((array)[2]);
 
 # REGEXP_FIRST_CAPTURE
 macro CAPTURE(index) = (3 + (index));
 const CAPTURE0 = 3;
 const CAPTURE1 = 4;