Support native extensions for analysis and docgen.

pkg/compiler/lib/src/warnings.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.
 
 part of dart2js;
 
 const DONT_KNOW_HOW_TO_FIX = "";
 
 /**
  * The messages in this file should meet the following guide lines:
@@ skipping 2063 matching lines @@
 }""",
 """
 main() async* {
  var yield;
 }""",
 """
 main() sync* {
  var yield;
 }"""]);
 
+  static const MessageKind NATIVE_NOT_SUPPORTED = const MessageKind(
+      "'native' modifier is not supported.",
+      howToFix: "Try removing the 'native' implementation or analyzing the "
+                "code with the --allow-native-extensions option.",
+      examples: const ["""
+main() native "Main";
+"""]);
+
+  static const MessageKind DART_EXT_NOT_SUPPORTED = const MessageKind(
+      "The 'dart-ext' scheme is not supported.",
+      howToFix: "Try analyzing the code with the --allow-native-extensions "
+                "option.",
+      examples: const ["""
+import 'dart-ext:main';
+
+main() {}
+"""]);
+
   //////////////////////////////////////////////////////////////////////////////
   // Patch errors start.
   //////////////////////////////////////////////////////////////////////////////
 
   static const MessageKind PATCH_RETURN_TYPE_MISMATCH = const MessageKind(
       "Patch return type '#{patchReturnType}' does not match "
       "'#{originReturnType}' on origin method '#{methodName}'.");
 
   static const MessageKind PATCH_REQUIRED_PARAMETER_COUNT_MISMATCH =
       const MessageKind(
@@ skipping 140 matching lines @@
   static String convertToString(value) {
     if (value is ErrorToken) {
       // Shouldn't happen.
       return value.assertionMessage;
     } else if (value is Token) {
       value = value.value;
     }
     return '$value';
   }
 }