extension point for enabling jvm debugging for specific files

java/debugger/openapi/src/com/intellij/debugger/engine/DebuggerUtils.java

@@ -27,6 +27,7 @@ import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.components.ApplicationComponent;
 import com.intellij.openapi.components.ServiceManager;
 import com.intellij.openapi.diagnostic.Logger;
+import com.intellij.openapi.extensions.Extensions;
 import com.intellij.openapi.fileTypes.FileType;
 import com.intellij.openapi.fileTypes.LanguageFileType;
 import com.intellij.openapi.project.Project;
@@ -454,4 +455,14 @@ public abstract class DebuggerUtils  implements ApplicationComponent {
   public static boolean supportsJVMDebugging(FileType type) {
     return type instanceof LanguageFileType && ((LanguageFileType)type).isJVMDebuggingSupported();
   }
+
+  public static boolean supportsJVMDebugging(PsiFile file) {
+    final JVMDebugProvider[] providers = Extensions.getExtensions(JVMDebugProvider.EP_NAME);
+    for (JVMDebugProvider provider : providers) {
+      if (provider.supportsJVMDebugging(file)) {
+        return true;
+      }
+    }
+    return false;
+  }
 }

java/debugger/openapi/src/com/intellij/debugger/engine/JVMDebugProvider.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2000-2010 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 com.intellij.debugger.engine;
+
+import com.intellij.openapi.extensions.ExtensionPointName;
+import com.intellij.psi.PsiFile;
+
+/**
+ * @author Dennis.Ushakov
+ */
+public interface JVMDebugProvider {
+  ExtensionPointName<JVMDebugProvider> EP_NAME = ExtensionPointName.create("com.intellij.debugger.jvmDebugProvider");
+
+  boolean supportsJVMDebugging(PsiFile file);
+}