| /* |
| * 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.evaluation.expression; |
| |
| import com.intellij.debugger.engine.DebugProcessImpl; |
| import com.intellij.debugger.engine.JVMNameUtil; |
| import com.intellij.debugger.engine.evaluation.EvaluateException; |
| import com.intellij.debugger.engine.evaluation.EvaluationContextImpl; |
| import com.sun.jdi.*; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * @author Eugene Zhuravlev |
| * Date: Feb 8, 2010 |
| */ |
| public class BoxingEvaluator implements Evaluator{ |
| private final Evaluator myOperand; |
| |
| public BoxingEvaluator(Evaluator operand) { |
| myOperand = new DisableGC(operand); |
| } |
| |
| public Object evaluate(EvaluationContextImpl context) throws EvaluateException { |
| final Object result = myOperand.evaluate(context); |
| if (result == null || result instanceof ObjectReference) { |
| return result; |
| } |
| |
| if (result instanceof BooleanValue) { |
| return convertToWrapper(context, (BooleanValue)result, "java.lang.Boolean"); |
| } |
| if (result instanceof ByteValue) { |
| return convertToWrapper(context, (ByteValue)result, "java.lang.Byte"); |
| } |
| if (result instanceof CharValue) { |
| return convertToWrapper(context, (CharValue)result, "java.lang.Character"); |
| } |
| if (result instanceof ShortValue) { |
| return convertToWrapper(context, (ShortValue)result, "java.lang.Short"); |
| } |
| if (result instanceof IntegerValue) { |
| return convertToWrapper(context, (IntegerValue)result, "java.lang.Integer"); |
| } |
| if (result instanceof LongValue) { |
| return convertToWrapper(context, (LongValue)result, "java.lang.Long"); |
| } |
| if (result instanceof FloatValue) { |
| return convertToWrapper(context, (FloatValue)result, "java.lang.Float"); |
| } |
| if (result instanceof DoubleValue) { |
| return convertToWrapper(context, (DoubleValue)result, "java.lang.Double"); |
| } |
| throw new EvaluateException("Cannot perform boxing conversion for a value of type " + ((Value)result).type().name()); |
| } |
| |
| @Nullable |
| public Modifier getModifier() { |
| return null; |
| } |
| |
| private static Value convertToWrapper(EvaluationContextImpl context, PrimitiveValue value, String wrapperTypeName) throws |
| EvaluateException { |
| final DebugProcessImpl process = context.getDebugProcess(); |
| final ClassType wrapperClass = (ClassType)process.findClass(context, wrapperTypeName, null); |
| final String methodSignature = "(" + JVMNameUtil.getPrimitiveSignature(value.type().name()) + ")L" + wrapperTypeName.replace('.', '/') + ";"; |
| |
| List<Method> methods = wrapperClass.methodsByName("valueOf", methodSignature); |
| if (methods.size() == 0) { // older JDK version |
| methods = wrapperClass.methodsByName("<init>", methodSignature); |
| } |
| if (methods.size() == 0) { |
| throw new EvaluateException("Cannot construct wrapper object for value of type " + value.type() + ": Unable to find either valueOf() or constructor method"); |
| } |
| |
| final Method factoryMethod = methods.get(0); |
| |
| final ArrayList args = new ArrayList(); |
| args.add(value); |
| |
| return process.invokeMethod(context, wrapperClass, factoryMethod, args); |
| } |
| } |