Implement continue for switch.

tests/language/infinite_switch_label_test.dart

+// Copyright (c) 2013, 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.
+
+// Test nested switch statement using labels.
+
+library nested_switch_label;
+
+import "package:expect/expect.dart";
+
+void main() {
+  Expect.throws(() => doSwitch(0), (list) {
+    Expect.listEquals([0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0], list);
+    return true;
+  });
+  Expect.throws(() => doSwitch(2), (list) {
+    Expect.listEquals([2, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0], list);
+    return true;
+  });
+}
+
+void doSwitch(int target) {
+  List list = [];
+  switch (target) {
+    l0: case 0:
+      if (list.length > 10) throw list;
+      list.add(0);
+      continue l1;
+    l1: case 1:
+      if (list.length > 10) throw list;
+      list.add(1);
+      continue l0;
+    default:
+      list.add(2);
+      continue l1;
+  }
+}