Emit named parameter information in declaration order.

tests/corelib/apply2_test.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.
 
 import "package:expect/expect.dart";
 import "symbol_map_helper.dart";
 
 apply(Function function, ArgumentDescriptor args) {
   return Function.apply(
       function, args.positionalArguments,
@@ skipping 11 matching lines @@
   Expect.throws(function, (e) => e is NoSuchMethodError);
 }
 
 main() {
   var c1 = () => 'c1';
   var c2 = (a) => 'c2 $a';
   var c3 = ([a = 1]) => 'c3 $a';
   var c4 = ({a: 1}) => 'c4 $a';
   var c5 = ({a: 1, b: 2}) => 'c5 $a $b';
   var c6 = ({b: 1, a: 2}) => 'c6 $a $b';
+  var c7 = (x, {b: 1, a: 2}) => 'c7 $x $a $b';
 
   Expect.equals('c1', apply(c1, new ArgumentDescriptor(null, null)));
   Expect.equals('c1', apply(c1, new ArgumentDescriptor([], null)));
   Expect.equals('c1', apply(c1, new ArgumentDescriptor([], {})));
   Expect.equals('c1', apply(c1, new ArgumentDescriptor(null, {})));
   throwsNSME(() => apply(c1, new ArgumentDescriptor([1], null)));
   throwsNSME(() => apply(c1, new ArgumentDescriptor([1], {'a': 2})));
   throwsNSME(() => apply(c1, new ArgumentDescriptor(null, {'a': 2})));
 
   Expect.equals('c2 1', apply(c2, new ArgumentDescriptor([1], null)));
@@ skipping 38 matching lines @@
   Expect.equals('c6 3 4',
       apply(c6, new ArgumentDescriptor([], {'a': 3, 'b': 4})));
   Expect.equals('c6 4 3',
       apply(c6, new ArgumentDescriptor([], {'b': 3, 'a': 4})));
   Expect.equals('c6 2 3',
       apply(c6, new ArgumentDescriptor([], {'b': 3})));
   throwsNSME(() => apply(c6, new ArgumentDescriptor([1], {'a': 1})));
   throwsNSME(() => apply(c6, new ArgumentDescriptor([1], {})));
   throwsNSME(() =>
       apply(c6, new ArgumentDescriptor([], {'a': 1, 'b': 2, 'c': 3})));
+
+  Expect.equals('c7 7 2 1', apply(c7, new ArgumentDescriptor([7], null)));
+  Expect.equals('c7 7 3 1', apply(c7, new ArgumentDescriptor([7], {'a': 3})));
+  Expect.equals('c7 7 2 1', apply(c7, new ArgumentDescriptor([7], {})));
+  Expect.equals('c7 7 3 4',
+      apply(c7, new ArgumentDescriptor([7], {'a': 3, 'b': 4})));
+  Expect.equals('c7 7 4 3',
+      apply(c7, new ArgumentDescriptor([7], {'b': 3, 'a': 4})));
+  Expect.equals('c7 7 2 3',
+      apply(c7, new ArgumentDescriptor([7], {'b': 3})));
+  throwsNSME(() => apply(c7, new ArgumentDescriptor([], {'a': 1})));
+  throwsNSME(() => apply(c7, new ArgumentDescriptor([], {})));
+  throwsNSME(() =>
+      apply(c7, new ArgumentDescriptor([7], {'a': 1, 'b': 2, 'c': 3})));
 }