Issue 3752. Support for @override annotations (as structured doc comments)

compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java

 // 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.
 package com.google.dart.compiler.type;
 
 import com.google.common.base.Joiner;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.dart.compiler.CommandLineOptions.CompilerOptions;
@@ skipping 1474 matching lines @@
             "interface I {",
             "  foo([x,y]);",
             "}",
             "class C implements I {",
             "  foo([x]) {}",
             "}");
     assertErrors(
         result.getErrors(),
         errEx(ResolverErrorCode.CANNOT_OVERRIDE_METHOD_NAMED_PARAMS, 5, 3, 3));
   }
+  
+  public void test_metadataOverride_OK_method() throws Exception {
+    AnalyzeLibraryResult result = analyzeLibrary(
+        "// filler filler filler filler filler filler filler filler filler filler",
+        "class A {",
+        "  foo() {}",
+        "}",
+        "class B extends A {",
+        "  // @override",
+        "  foo() {}",
+        "}",
+        "");
+    assertErrors(result.getErrors());
+  }
+  
+  public void test_metadataOverride_Bad_method() throws Exception {
+    AnalyzeLibraryResult result = analyzeLibrary(
+        "// filler filler filler filler filler filler filler filler filler filler",
+        "class A {",
+        "}",
+        "class B extends A {",
+        "  // @override",
+        "  foo() {}",
+        "}",
+        "");
+    assertErrors(
+        result.getErrors(),
+        errEx(ResolverErrorCode.INVALID_OVERRIDE_METADATA, 6, 3, 3));
+  }
 
   /**
    * It is a compile-time error if an instance method m1 overrides an instance member m2 and m1 does
    * not declare all the named parameters declared by m2 in the same order.
    * <p>
    * Here: wrong order.
    */
   public void testImplementsAndOverrides5() throws Exception {
     AnalyzeLibraryResult result =
         analyzeLibrary(
@@ skipping 1359 matching lines @@
             && index < sourceInfo.getEnd()
             && clazz.isInstance(node)) {
           result.set((T) node);
         }
         return super.visitNode(node);
       }
     });
     return result.get();
   }
 }