| /* |
| * Copyright 2000-2012 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.psi.impl.source.tree.java; |
| |
| import com.intellij.lang.ASTNode; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.psi.*; |
| import com.intellij.psi.impl.PsiImplUtil; |
| import com.intellij.psi.impl.source.Constants; |
| import com.intellij.psi.impl.source.SourceTreeToPsiMap; |
| import com.intellij.psi.impl.source.tree.ChildRole; |
| import com.intellij.psi.impl.source.tree.CompositePsiElement; |
| import com.intellij.psi.scope.PsiScopeProcessor; |
| import com.intellij.psi.tree.ChildRoleBase; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.ArrayList; |
| |
| public class PsiTryStatementImpl extends CompositePsiElement implements PsiTryStatement, Constants { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.PsiTryStatementImpl"); |
| |
| private volatile PsiParameter[] myCachedCatchParameters = null; |
| |
| public PsiTryStatementImpl() { |
| super(TRY_STATEMENT); |
| } |
| |
| @Override |
| public void clearCaches() { |
| super.clearCaches(); |
| myCachedCatchParameters = null; |
| } |
| |
| @Override |
| public PsiCodeBlock getTryBlock() { |
| return (PsiCodeBlock)findChildByRoleAsPsiElement(ChildRole.TRY_BLOCK); |
| } |
| |
| @Override |
| @NotNull |
| public PsiCodeBlock[] getCatchBlocks() { |
| ASTNode tryBlock = SourceTreeToPsiMap.psiElementToTree(getTryBlock()); |
| if (tryBlock != null) { |
| PsiCatchSection[] catchSections = getCatchSections(); |
| if (catchSections.length == 0) return PsiCodeBlock.EMPTY_ARRAY; |
| boolean lastIncomplete = catchSections[catchSections.length - 1].getCatchBlock() == null; |
| PsiCodeBlock[] blocks = new PsiCodeBlock[lastIncomplete ? catchSections.length - 1 : catchSections.length]; |
| for (int i = 0; i < blocks.length; i++) { |
| blocks[i] = catchSections[i].getCatchBlock(); |
| } |
| return blocks; |
| } |
| return PsiCodeBlock.EMPTY_ARRAY; |
| } |
| |
| @Override |
| @NotNull |
| public PsiParameter[] getCatchBlockParameters() { |
| PsiParameter[] catchParameters = myCachedCatchParameters; |
| if (catchParameters == null) { |
| PsiCatchSection[] catchSections = getCatchSections(); |
| if (catchSections.length == 0) return PsiParameter.EMPTY_ARRAY; |
| boolean lastIncomplete = catchSections[catchSections.length - 1].getCatchBlock() == null; |
| int limit = lastIncomplete ? catchSections.length - 1 : catchSections.length; |
| ArrayList<PsiParameter> parameters = new ArrayList<PsiParameter>(); |
| for (int i = 0; i < limit; i++) { |
| PsiParameter parameter = catchSections[i].getParameter(); |
| if (parameter != null) parameters.add(parameter); |
| } |
| myCachedCatchParameters = catchParameters = parameters.toArray(new PsiParameter[parameters.size()]); |
| } |
| return catchParameters; |
| } |
| |
| @Override |
| @NotNull |
| public PsiCatchSection[] getCatchSections() { |
| return getChildrenAsPsiElements(CATCH_SECTION_BIT_SET, PsiCatchSection.ARRAY_FACTORY); |
| } |
| |
| @Override |
| public PsiCodeBlock getFinallyBlock() { |
| return (PsiCodeBlock)findChildByRoleAsPsiElement(ChildRole.FINALLY_BLOCK); |
| } |
| |
| @Override |
| public PsiResourceList getResourceList() { |
| return PsiTreeUtil.getChildOfType(this, PsiResourceList.class); |
| } |
| |
| @Override |
| public ASTNode findChildByRole(int role) { |
| LOG.assertTrue(ChildRole.isUnique(role)); |
| switch(role){ |
| default: |
| return null; |
| |
| case ChildRole.TRY_KEYWORD: |
| return findChildByType(TRY_KEYWORD); |
| |
| case ChildRole.TRY_BLOCK: |
| return findChildByType(CODE_BLOCK); |
| |
| case ChildRole.FINALLY_KEYWORD: |
| return findChildByType(FINALLY_KEYWORD); |
| |
| case ChildRole.FINALLY_BLOCK: |
| { |
| ASTNode finallyKeyword = findChildByRole(ChildRole.FINALLY_KEYWORD); |
| if (finallyKeyword == null) return null; |
| for(ASTNode child = finallyKeyword.getTreeNext(); child != null; child = child.getTreeNext()){ |
| if (child.getElementType() == CODE_BLOCK){ |
| return child; |
| } |
| } |
| return null; |
| } |
| } |
| } |
| |
| @Override |
| public int getChildRole(ASTNode child) { |
| LOG.assertTrue(child.getTreeParent() == this); |
| IElementType i = child.getElementType(); |
| if (i == TRY_KEYWORD) { |
| return ChildRole.TRY_KEYWORD; |
| } |
| else if (i == FINALLY_KEYWORD) { |
| return ChildRole.FINALLY_KEYWORD; |
| } |
| else if (i == CATCH_SECTION) { |
| return ChildRole.CATCH_SECTION; |
| } |
| else { |
| if (child.getElementType() == CODE_BLOCK) { |
| int role = getChildRole(child, ChildRole.TRY_BLOCK); |
| if (role != ChildRoleBase.NONE) return role; |
| return getChildRole(child, ChildRole.FINALLY_BLOCK); |
| } |
| else { |
| return ChildRoleBase.NONE; |
| } |
| } |
| } |
| |
| @Override |
| public void accept(@NotNull PsiElementVisitor visitor) { |
| if (visitor instanceof JavaElementVisitor) { |
| ((JavaElementVisitor)visitor).visitTryStatement(this); |
| } |
| else { |
| visitor.visitElement(this); |
| } |
| } |
| |
| @Override |
| public boolean processDeclarations(@NotNull final PsiScopeProcessor processor, |
| @NotNull final ResolveState state, |
| final PsiElement lastParent, |
| @NotNull final PsiElement place) { |
| final PsiResourceList resourceList = getResourceList(); |
| if (resourceList != null && lastParent instanceof PsiCodeBlock && lastParent == getTryBlock()) { |
| return PsiImplUtil.processDeclarationsInResourceList(resourceList, processor, state, lastParent); |
| } |
| |
| return true; |
| } |
| |
| @Override |
| public void deleteChildInternal(@NotNull ASTNode child) { |
| if (child.getPsi() instanceof PsiResourceList && getCatchBlocks().length == 0 && getFinallyBlock() == null) { |
| final PsiCodeBlock tryBlock = getTryBlock(); |
| if (tryBlock != null) { |
| final PsiCodeBlock block = (PsiCodeBlock)replace(tryBlock); |
| final PsiJavaToken lBrace = block.getLBrace(); |
| final PsiJavaToken rBrace = block.getRBrace(); |
| if (lBrace != null) { |
| lBrace.delete(); |
| } |
| if (rBrace != null) { |
| rBrace.delete(); |
| } |
| return; |
| } |
| } |
| super.deleteChildInternal(child); |
| } |
| |
| public String toString() { |
| return "PsiTryStatement"; |
| } |
| } |