| /* |
| * Copyright 2000-2009 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. |
| */ |
| |
| /* |
| * Class ThisEvaluator |
| * @author Jeka |
| */ |
| package com.intellij.debugger.engine.evaluation.expression; |
| |
| import com.intellij.debugger.DebuggerBundle; |
| import com.intellij.debugger.engine.evaluation.EvaluateException; |
| import com.intellij.debugger.engine.evaluation.EvaluateExceptionUtil; |
| import com.intellij.debugger.engine.evaluation.EvaluationContextImpl; |
| import com.sun.jdi.Field; |
| import com.sun.jdi.ObjectReference; |
| import com.sun.jdi.Value; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.List; |
| |
| public class ThisEvaluator implements Evaluator { |
| private final int myIterations; |
| |
| public ThisEvaluator() { |
| myIterations = 0; |
| } |
| |
| public ThisEvaluator(int iterations) { |
| myIterations = iterations; |
| } |
| |
| public Modifier getModifier() { |
| return null; |
| } |
| |
| public Object evaluate(EvaluationContextImpl context) throws EvaluateException { |
| Value objRef = context.getThisObject(); |
| if(myIterations > 0) { |
| ObjectReference thisRef = (ObjectReference)objRef; |
| for (int idx = 0; idx < myIterations && thisRef != null; idx++) { |
| thisRef = getOuterObject(thisRef); |
| } |
| objRef = thisRef; |
| } |
| if(objRef == null) { |
| throw EvaluateExceptionUtil.createEvaluateException(DebuggerBundle.message("evaluation.error.this.not.avalilable")); |
| } |
| return objRef; |
| } |
| |
| @Nullable |
| @SuppressWarnings({"HardCodedStringLiteral"}) |
| private static ObjectReference getOuterObject(ObjectReference objRef) { |
| if (objRef == null) { |
| return null; |
| } |
| List<Field> list = objRef.referenceType().fields(); |
| for (final Field field : list) { |
| final String name = field.name(); |
| if (name != null && name.startsWith("this$")) { |
| final ObjectReference rv = (ObjectReference)objRef.getValue(field); |
| if (rv != null) { |
| return rv; |
| } |
| } |
| } |
| return null; |
| } |
| } |