Report info messages together with their error, warning, or hint.

tests/compiler/dart2js/parser_test.dart

 // Copyright (c) 2011, 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 'parser_helper.dart';
 import 'package:compiler/src/tree/tree.dart';
 
 void testStatement(String statement) {
   Node node = parseStatement(statement);
@@ skipping 274 matching lines @@
   FunctionExpression function = parseMember('operator -() => null;');
   Send name = function.name.asSend();
   Expect.isNotNull(name);
   Expect.stringEquals('operator', name.receiver.toString());
   Expect.stringEquals('-', name.selector.toString());
   Expect.isTrue(function.parameters.isEmpty);
   Expect.isNull(function.returnType);
   Expect.isNull(function.getOrSet);
 }
 
-class Collector implements DiagnosticListener {
+class Collector extends DiagnosticListener {
   int token = -1;
 
-  void reportFatalError(Token token,
-                        messageKind,
-                        [Map arguments = const {}]) {
+  void reportFatalError(Token token) {
     this.token = token.kind;
     throw this;
   }
 
-  void reportError(Token token,
-                   messageKind,
-                   [Map arguments = const {}]) {
-    reportFatalError(token, messageKind, arguments);
+  void reportError(
+      DiagnosticMessage message,
+      [List<DiagnosticMessage> infos = const <DiagnosticMessage>[]]) {
+    reportFatalError(message.spannable);
   }
 
   void log(message) {
     print(message);
   }
 
-  noSuchMethod(Invocation invocation) => throw 'unsupported operation';
+  noSuchMethod(Invocation invocation) {
+    throw 'unsupported operation';
+  }
+
+  @override
+  DiagnosticMessage createMessage(spannable, messageKind, [arguments]) {
+    return new DiagnosticMessage(null, spannable, null);
+  }
 }
 
 void testMissingCloseParen() {
   final String source =
 '''foo(x {  // <= missing closing ")"
   return x;
 }''';
   parse() {
     parseMember(source, diagnosticHandler: new Collector());
   }
@@ skipping 40 matching lines @@
   testConditionalExpression();
   testNullOperators();
   testAssignment();
   testIndex();
   testPostfix();
   testOperatorParse();
   testMissingCloseParen();
   testMissingCloseBraceInClass();
   testUnmatchedAngleBracket();
 }