debugging anonymous and inner classes in script

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

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2000-2011 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.PsiClass;
+import com.intellij.psi.util.PsiTreeUtil;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * @author Max Medvedev
+ */
+public abstract class TopLevelParentClassProvider {
+  private static final ExtensionPointName<TopLevelParentClassProvider> EP_NAME =
+    ExtensionPointName.create("com.intellij.topLevelClassProvider");
+
+  public static PsiClass getTopLevelParentClass(PsiClass psiClass) {
+    for (TopLevelParentClassProvider provider : EP_NAME.getExtensions()) {
+      final PsiClass custom = provider.getCustomTopLevelParentClass(psiClass);
+      if (custom != null) return custom;
+    }
+
+    PsiClass enclosing = PsiTreeUtil.getParentOfType(psiClass, PsiClass.class, true);
+    while (enclosing != null) {
+      psiClass = enclosing;
+      enclosing = PsiTreeUtil.getParentOfType(enclosing, PsiClass.class, true);
+    }
+    return psiClass;
+  }
+
+  @Nullable
+  protected abstract PsiClass getCustomTopLevelParentClass(PsiClass psiClass);
+
+}