| /* |
| * 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. |
| */ |
| 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.EvaluationContext; |
| import com.intellij.debugger.engine.evaluation.EvaluationContextImpl; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.sun.jdi.Value; |
| |
| /** |
| * Created by IntelliJ IDEA. |
| * User: lex |
| * Date: Jul 15, 2003 |
| * Time: 1:44:35 PM |
| * To change this template use Options | File Templates. |
| */ |
| public class ExpressionEvaluatorImpl implements ExpressionEvaluator { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.debugger.engine.evaluation.expression.ExpressionEvaluator"); |
| Evaluator myEvaluator; |
| Value myValue; |
| |
| public ExpressionEvaluatorImpl(Evaluator evaluator) { |
| myEvaluator = evaluator; |
| } |
| |
| //call evaluate before |
| @Override |
| public Value getValue() { |
| return myValue; |
| } |
| |
| //call evaluate before |
| @Override |
| public Modifier getModifier() { |
| return myEvaluator.getModifier(); |
| } |
| |
| // EvaluationContextImpl should be at the same stackFrame as it was in the call to EvaluatorBuilderImpl.build |
| @Override |
| public Value evaluate(final EvaluationContext context) throws EvaluateException { |
| if (!context.getDebugProcess().isAttached()) { |
| throw EvaluateExceptionUtil.createEvaluateException(DebuggerBundle.message("error.vm.disconnected")); |
| } |
| try { |
| if (context.getFrameProxy() == null) { |
| throw EvaluateExceptionUtil.NULL_STACK_FRAME; |
| } |
| |
| Object value = myEvaluator.evaluate((EvaluationContextImpl)context); |
| |
| if (value != null && !(value instanceof Value)) { |
| throw EvaluateExceptionUtil |
| .createEvaluateException(DebuggerBundle.message("evaluation.error.invalid.expression", "")); |
| } |
| |
| myValue = (Value)value; |
| return myValue; |
| } |
| catch (Throwable/*IncompatibleThreadStateException*/ e) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug(e); |
| } |
| if (e instanceof EvaluateException) { |
| throw ((EvaluateException)e); |
| } |
| else { |
| throw EvaluateExceptionUtil.createEvaluateException(e); |
| } |
| } |
| } |
| } |