Change signature of noSuchMethod to take an InvocationMirror.

lib/core/errors.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.
 
 class Error {
   const Error();
 }
 
 /**
  * Error thrown by the runtime system when an assert statement fails.
@@ skipping 57 matching lines @@
   String toString() => "Cannot instantiate abstract class: '$_className'";
 }
 
 /**
  * Error thrown by the default implementation of [:noSuchMethod:] on [Object].
  */
 class NoSuchMethodError implements Error {
   final Object _receiver;
   final String _functionName;
   final List _arguments;
+  final Map<String,Dynamic> _namedArguments;
   final List _existingArgumentNames;
 
   /**
    * Create a [NoSuchMethodError] corresponding to a failed method call.
    *
    * The first parameter is the receiver of the method call.
    * The second parameter is the name of the called method.
    * The third parameter is the positional arguments that the method was
    * called with.
    * The optional [exisitingArgumentNames] is the expected parameters of a
    * method with the same name on the receiver, if available. This is
    * the method that would have been called if the parameters had matched.
    *
    * TODO(lrn): This will be rewritten to use mirrors when they are available.
    */
   const NoSuchMethodError(Object this._receiver,
                           String this._functionName,
                           List this._arguments,
+                          Map<String,Dynamic> this._namedArguments,
                           [List existingArgumentNames = null])
       : this._existingArgumentNames = existingArgumentNames;
 
   String toString() {
     StringBuffer sb = new StringBuffer();
-    for (int i = 0; i < _arguments.length; i++) {
-      if (i > 0) {
-        sb.add(", ");
+    int i = 0;
+    if (_arguments != null) {
+      for (; i < _arguments.length; i++) {
+        if (i > 0) {
+          sb.add(", ");
+        }
+        sb.add(safeToString(_arguments[i]));
       }
-      sb.add(safeToString(_arguments[i]));
+    }
+    if (_namedArguments != null) {
+      _namedArguments.forEach((String key, var value) {
+        if (i > 0) {
+          sb.add(", ");
+        }
+        sb.add(key);
+        sb.add(": ");
+        sb.add(safeToString(value));
+        i++;
+      });
     }
     if (_existingArgumentNames === null) {
       return "NoSuchMethodError : method not found: '$_functionName'\n"
           "Receiver: ${safeToString(_receiver)}\n"
           "Arguments: [$sb]";
     } else {
       String actualParameters = sb.toString();
       sb = new StringBuffer();
       for (int i = 0; i < _existingArgumentNames.length; i++) {
         if (i > 0) {
@@ skipping 58 matching lines @@
 
 class OutOfMemoryError implements Error {
   const OutOfMemoryError();
   String toString() => "Out of Memory";
 }
 
 class StackOverflowError implements Error {
   const StackOverflowError();
   String toString() => "Stack Overflow";
 }