Built-in JSON support

src/date-delay.js

 // 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 967 matching lines @@
 // Notice that this does not follow ECMA 262 completely.  ECMA 262
 // says that toGMTString should be the same Function object as
 // toUTCString.  JSC does not do this, so for compatibility we do not
 // do that either.  Instead, we create a new function whose name
 // property will return toGMTString.
 function DateToGMTString() {
   return DateToUTCString.call(this);
 }
 
 
+function PadInt(n) {
+  // Format integers to have at least two digits.
+  return n < 10 ? '0' + n : n;
+}
+
+
+function DateToISOString() {
+  return this.getUTCFullYear() + '-' + PadInt(this.getUTCMonth() + 1) +
+      '-' + PadInt(this.getUTCDate()) + 'T' + PadInt(this.getUTCHours()) +
+      ':' + PadInt(this.getUTCMinutes()) + ':' + PadInt(this.getUTCSeconds()) +
+      'Z';
+}
+
+
+function DateToJSON(key) {
+  return CheckJSONPrimitive(this.toISOString());
+}
+
+
 // -------------------------------------------------------------------
 
 function SetupDate() {
   // Setup non-enumerable properties of the Date object itself.
   InstallFunctions($Date, DONT_ENUM, $Array(
     "UTC", DateUTC,
     "parse", DateParse,
     "now", DateNow
   ));
 
@@ skipping 39 matching lines @@
     "setUTCHours", DateSetUTCHours,
     "setDate", DateSetDate,
     "setUTCDate", DateSetUTCDate,
     "setMonth", DateSetMonth,
     "setUTCMonth", DateSetUTCMonth,
     "setFullYear", DateSetFullYear,
     "setUTCFullYear", DateSetUTCFullYear,
     "toGMTString", DateToGMTString,
     "toUTCString", DateToUTCString,
     "getYear", DateGetYear,
-    "setYear", DateSetYear
+    "setYear", DateSetYear,
+    "toISOString", DateToISOString,
+    "toJSON", DateToJSON
   ));
 }
 
 SetupDate();