Introducing a kUninitialized constant used for clearing the function cache.

src/macros.py

 # Copyright 2006-2008 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 43 matching lines @@
 
 # For date.js.
 const HoursPerDay      = 24;
 const MinutesPerHour   = 60;
 const SecondsPerMinute = 60;
 const msPerSecond      = 1000;
 const msPerMinute      = 60000;
 const msPerHour        = 3600000;
 const msPerDay         = 86400000;
 
+# For apinatives.js
+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;
 
 # Type query macros.
 macro IS_NULL(arg)              = (arg === null);
@@ skipping 15 matching lines @@
 macro NUMBER_IS_NAN(arg) = (!%_IsSmi(%IS_VAR(arg)) && !(arg == arg));
 macro TO_INTEGER(arg)    = (%_IsSmi(%IS_VAR(arg)) ? arg : ToInteger(arg));
 macro TO_INT32(arg)      = (%_IsSmi(%IS_VAR(arg)) ? arg : ToInt32(arg));
 
 # Macros implemented in Python.
 python macro CHAR_CODE(str) = ord(str[1]);
 
 # Accessors for original global properties that ensure they have been loaded.
 const ORIGINAL_REGEXP = (global.RegExp, $RegExp);
 const ORIGINAL_DATE   = (global.Date, $Date);