Introduced IdeErrorMessages, which is now used along with DefaultErrorMessages in IDEA plugin.

idea/src/org/jetbrains/jet/plugin/highlighter/IdeErrorMessages.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2010-2012 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.jet.plugin.highlighter;
+
+import org.jetbrains.jet.lang.diagnostics.Diagnostic;
+import org.jetbrains.jet.lang.diagnostics.rendering.DefaultErrorMessages;
+import org.jetbrains.jet.lang.diagnostics.rendering.DiagnosticFactoryToRendererMap;
+import org.jetbrains.jet.lang.diagnostics.rendering.DiagnosticRenderer;
+import org.jetbrains.jet.lang.diagnostics.rendering.DispatchingDiagnosticRenderer;
+
+/**
+ * @author Evgeny Gerashchenko
+ * @since 4/13/12
+ */
+public class IdeErrorMessages {
+    public static final DiagnosticFactoryToRendererMap MAP = new DiagnosticFactoryToRendererMap();
+    public static final DiagnosticRenderer<Diagnostic> RENDERER = new DispatchingDiagnosticRenderer(MAP, DefaultErrorMessages.MAP);
+
+    static {
+        // TODO
+    }
+
+    private IdeErrorMessages() {
+    }
+}

idea/src/org/jetbrains/jet/plugin/highlighter/JetPsiChecker.java

@@ -238,7 +238,7 @@ public class JetPsiChecker implements Annotator {
 
     @NotNull
     private static String getMessage(@NotNull Diagnostic diagnostic) {
-        String message = DefaultErrorMessages.RENDERER.render(diagnostic);
+        String message = IdeErrorMessages.RENDERER.render(diagnostic);
         if (ApplicationManager.getApplication().isInternal() || ApplicationManager.getApplication().isUnitTestMode()) {
             return "[" + diagnostic.getFactory().getName() + "] " + message;
         }