Implement Strings API.

dart/frog/leg/lib/js_helper.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #library('js_helper');
 
 #import('coreimpl.dart');
 
 /**
   * Returns true if both arguments are numbers.
@@ skipping 373 matching lines @@
     throw 'Primitives.getHours is not implemented';
   }
 
   static int getMinutes(int secondsSinceEpoch, bool isUtc) {
     throw 'Primitives.getMinutes is not implemented';
   }
 
   static int getSeconds(int secondsSinceEpoch, bool isUtc) {
     throw 'Primitives.getSeconds is not implemented';
   }
+
+  static String stringFromCharCodes(charCodes) {
+    for (var i in charCodes) {

[kasperl, 2012/02/20 10:48:50]

Would it make sense to check that charCodes is a list (or isJsArray -- renamed
from isJSArray)?

[ahe, 2012/02/20 16:35:26]

That is already done in StringBase.createFromCharCodes.

+      checkNum(i);
+    }
+    return JS('String', @'String.fromCharCode.apply($0, $1)', null, charCodes);
+  }
 }
 
 builtin$compareTo$1(a, b) {
   checkNull(a);
   if (checkNumbers(a, b, 'illegal argument')) {
     if (a < b) {
       return -1;
     } else if (a > b) {
       return 1;
     } else if (a == b) {
@@ skipping 560 matching lines @@
 builtin$hashCode$0(receiver) {
   if (receiver is num) return receiver & 0x1FFFFFFF;
   if (receiver is String) {
     throw new NotImplementedException();
   }
   if (isJSArray(receiver)) {
     throw new NotImplementedException();
   }
   return UNINTERCEPTED(receiver.hashCode());
 }