| /* |
| * 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.codeinsight; |
| |
| import com.intellij.debugger.DebuggerBundle; |
| import com.intellij.debugger.DebuggerInvocationUtil; |
| import com.intellij.debugger.EvaluatingComputable; |
| import com.intellij.debugger.engine.ContextUtil; |
| import com.intellij.debugger.engine.evaluation.EvaluateException; |
| import com.intellij.debugger.engine.evaluation.EvaluateExceptionUtil; |
| import com.intellij.debugger.engine.evaluation.EvaluationContextImpl; |
| import com.intellij.debugger.engine.evaluation.expression.EvaluatorBuilderImpl; |
| import com.intellij.debugger.engine.evaluation.expression.ExpressionEvaluator; |
| import com.intellij.debugger.impl.DebuggerContextImpl; |
| import com.intellij.debugger.ui.EditorEvaluationCommand; |
| import com.intellij.openapi.application.AccessToken; |
| import com.intellij.openapi.application.ReadAction; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.progress.ProcessCanceledException; |
| import com.intellij.openapi.progress.ProgressIndicator; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.psi.search.GlobalSearchScope; |
| import com.sun.jdi.ClassType; |
| import com.sun.jdi.InterfaceType; |
| import com.sun.jdi.Type; |
| import com.sun.jdi.Value; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * @author peter |
| */ |
| public abstract class RuntimeTypeEvaluator extends EditorEvaluationCommand<PsiClass> { |
| public RuntimeTypeEvaluator(@Nullable Editor editor, PsiElement expression, DebuggerContextImpl context, final ProgressIndicator indicator) { |
| super(editor, expression, context, indicator); |
| } |
| |
| public void threadAction() { |
| PsiClass type = null; |
| try { |
| type = evaluate(); |
| } |
| catch (ProcessCanceledException ignored) { |
| } |
| catch (EvaluateException ignored) { |
| } |
| finally { |
| typeCalculationFinished(type); |
| } |
| } |
| |
| protected abstract void typeCalculationFinished(@Nullable PsiClass type); |
| |
| @Nullable |
| protected PsiClass evaluate(final EvaluationContextImpl evaluationContext) throws EvaluateException { |
| final Project project = evaluationContext.getProject(); |
| |
| ExpressionEvaluator evaluator = DebuggerInvocationUtil.commitAndRunReadAction(project, new EvaluatingComputable<ExpressionEvaluator>() { |
| public ExpressionEvaluator compute() throws EvaluateException { |
| return EvaluatorBuilderImpl.getInstance().build(myElement, ContextUtil.getSourcePosition(evaluationContext)); |
| } |
| }); |
| |
| final Value value = evaluator.evaluate(evaluationContext); |
| if(value != null){ |
| return getCastableRuntimeType(project, value); |
| } |
| |
| throw EvaluateExceptionUtil.createEvaluateException(DebuggerBundle.message("evaluation.error.surrounded.expression.null")); |
| } |
| |
| public static PsiClass getCastableRuntimeType(Project project, Value value) { |
| Type type = value.type(); |
| PsiClass psiClass = findPsiClass(project, type); |
| if (psiClass != null) { |
| return psiClass; |
| } |
| |
| if (type instanceof ClassType) { |
| ClassType superclass = ((ClassType)type).superclass(); |
| if (superclass != null && !CommonClassNames.JAVA_LANG_OBJECT.equals(superclass.name())) { |
| psiClass = findPsiClass(project, superclass); |
| if (psiClass != null) { |
| return psiClass; |
| } |
| } |
| |
| for (InterfaceType interfaceType : ((ClassType)type).interfaces()) { |
| psiClass = findPsiClass(project, interfaceType); |
| if (psiClass != null) { |
| return psiClass; |
| } |
| } |
| } |
| return null; |
| } |
| |
| private static PsiClass findPsiClass(Project project, Type type) { |
| AccessToken token = ReadAction.start(); |
| try { |
| return JavaPsiFacade.getInstance(project).findClass(type.name().replace('$', '.'), GlobalSearchScope.allScope(project)); |
| } |
| finally { |
| token.finish(); |
| } |
| } |
| |
| public static boolean isSubtypeable(PsiExpression expr) { |
| final PsiType type = expr.getType(); |
| if (type instanceof PsiPrimitiveType) { |
| return false; |
| } |
| if (type instanceof PsiClassType) { |
| final PsiClass psiClass = ((PsiClassType)type).resolve(); |
| if (psiClass != null && psiClass.hasModifierProperty(PsiModifier.FINAL)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| } |