Support is/as expressions in analyzer2dart.

pkg/analyzer2dart/test/sexpr_data.dart

 // Copyright (c) 2014, 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 data for sexpr_test.
 library test.sexpr.data;
 
 import 'test_helper.dart';
 
 const List<Group> TEST_DATA = const [
@@ skipping 1027 matching lines @@
           (LetPrim v6 (Constant IntConstant(1)))
           (LetCont (k5 v7)
             (InvokeContinuation* k0 v7))
           (InvokeMethod v1 + v6 k5))
         (InvokeStatic print v1 k4))
       (Branch (IsTrue v3) k3 k2))
     (InvokeMethod v1 < v2 k1))
   (InvokeContinuation k0 v0))
 '''),
   ]),
+
+  const Group('Type operators', const <TestSpec>[
+    const TestSpec('''
+main(a) {
+  return a is String;
+}
+''', '''
+(FunctionDefinition main (a return)
+  (LetCont (k0 v0)
+    (InvokeContinuation return v0))
+  (TypeOperator is a String k0))
+'''),
+
+    const TestSpec('''
+main(a) {
+  return a is List<String>;
+}
+''', '''
+(FunctionDefinition main (a return)
+  (LetCont (k0 v0)
+    (InvokeContinuation return v0))
+  (TypeOperator is a List<String> k0))
+'''),
+
+    const TestSpec('''
+main(a) {
+  return a is Comparator<String>;
+}
+''', '''
+(FunctionDefinition main (a return)
+  (LetCont (k0 v0)
+    (InvokeContinuation return v0))
+  (TypeOperator is a Comparator<String> k0))
+'''),
+
+  const TestSpec('''
+main(a) {
+  return a is! String;
+}
+''', '''
+(FunctionDefinition main (a return)
+  (LetCont (k0 v0)
+    (LetCont (k1 v1)
+      (InvokeContinuation return v1))
+    (LetCont (k2)
+      (LetPrim v2 (Constant BoolConstant(false)))
+      (InvokeContinuation k1 v2))
+    (LetCont (k3)
+      (LetPrim v3 (Constant BoolConstant(true)))
+      (InvokeContinuation k1 v3))
+    (Branch (IsTrue v0) k2 k3))
+  (TypeOperator is a String k0))
+'''),
+
+const TestSpec('''
+main(a) {
+  return a as String;
+}
+''', '''
+(FunctionDefinition main (a return)
+  (LetCont (k0 v0)
+    (InvokeContinuation return v0))
+  (TypeOperator as a String k0))
+'''),
+  ]),
 ];