| /* |
| * 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; |
| |
| import com.intellij.debugger.SourcePosition; |
| import com.intellij.debugger.engine.evaluation.EvaluateException; |
| import com.intellij.debugger.engine.jdi.StackFrameProxy; |
| import com.intellij.debugger.jdi.LocalVariableProxyImpl; |
| import com.intellij.debugger.jdi.StackFrameProxyImpl; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.project.IndexNotReadyException; |
| import com.intellij.openapi.util.Comparing; |
| import com.intellij.openapi.util.Key; |
| import com.intellij.psi.*; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.util.StringBuilderSpinAllocator; |
| import com.sun.jdi.Location; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.List; |
| |
| public class ContextUtil { |
| public static final Key<Boolean> IS_JSP_IMPLICIT = new Key<Boolean>("JspImplicit"); |
| private static final Logger LOG = Logger.getInstance("#com.intellij.debugger.impl.PositionUtil"); |
| |
| @Nullable |
| public static SourcePosition getSourcePosition(@Nullable final StackFrameContext context) { |
| if (context == null) { |
| return null; |
| } |
| DebugProcessImpl debugProcess = (DebugProcessImpl)context.getDebugProcess(); |
| if(debugProcess == null) { |
| return null; |
| } |
| final StackFrameProxy frameProxy = context.getFrameProxy(); |
| if(frameProxy == null) { |
| return null; |
| } |
| Location location = null; |
| try { |
| location = frameProxy.location(); |
| } |
| catch (Throwable e) { |
| LOG.debug(e); |
| } |
| final CompoundPositionManager positionManager = debugProcess.getPositionManager(); |
| if (positionManager == null) { |
| // process already closed |
| return null; |
| } |
| try { |
| return positionManager.getSourcePosition(location); |
| } |
| catch (IndexNotReadyException ignored) { |
| return null; |
| } |
| } |
| |
| @Nullable |
| public static PsiElement getContextElement(final StackFrameContext context) { |
| return getContextElement(context, getSourcePosition(context)); |
| } |
| |
| @Nullable |
| protected static PsiElement getContextElement(final StackFrameContext context, final SourcePosition position) { |
| if(LOG.isDebugEnabled()) { |
| final SourcePosition sourcePosition = getSourcePosition(context); |
| LOG.assertTrue(Comparing.equal(sourcePosition, position)); |
| } |
| |
| final PsiElement element = getContextElement(position); |
| |
| if(element == null) { |
| return null; |
| } |
| |
| final StackFrameProxyImpl frameProxy = (StackFrameProxyImpl)context.getFrameProxy(); |
| |
| if(frameProxy == null) { |
| return element; |
| } |
| |
| final StringBuilder buf = StringBuilderSpinAllocator.alloc(); |
| try { |
| List<LocalVariableProxyImpl> list = frameProxy.visibleVariables(); |
| |
| PsiResolveHelper resolveHelper = JavaPsiFacade.getInstance(element.getProject()).getResolveHelper(); |
| buf.append('{'); |
| for (LocalVariableProxyImpl localVariable : list) { |
| final String varName = localVariable.name(); |
| if (resolveHelper.resolveReferencedVariable(varName, element) == null) { |
| buf.append(localVariable.getVariable().typeName()).append(" ").append(varName).append(";"); |
| } |
| } |
| buf.append('}'); |
| |
| if (buf.length() <= 2) { |
| return element; |
| } |
| final PsiElementFactory elementFactory = JavaPsiFacade.getInstance(element.getProject()).getElementFactory(); |
| final PsiCodeBlock codeBlockFromText = elementFactory.createCodeBlockFromText(buf.toString(), element); |
| |
| final PsiStatement[] statements = codeBlockFromText.getStatements(); |
| for (PsiStatement statement : statements) { |
| if (statement instanceof PsiDeclarationStatement) { |
| PsiDeclarationStatement declStatement = (PsiDeclarationStatement)statement; |
| PsiElement[] declaredElements = declStatement.getDeclaredElements(); |
| for (PsiElement declaredElement : declaredElements) { |
| declaredElement.putUserData(IS_JSP_IMPLICIT, Boolean.TRUE); |
| } |
| } |
| } |
| return codeBlockFromText; |
| } |
| catch (IncorrectOperationException ignored) { |
| return element; |
| } |
| catch (EvaluateException ignored) { |
| return element; |
| } |
| finally { |
| StringBuilderSpinAllocator.dispose(buf); |
| } |
| } |
| |
| @Nullable |
| public static PsiElement getContextElement(@Nullable SourcePosition position) { |
| return position == null ? null : position.getElementAt(); |
| } |
| |
| public static boolean isJspImplicit(PsiElement element) { |
| return Boolean.TRUE.equals(element.getUserData(IS_JSP_IMPLICIT)); |
| } |
| } |