| /* |
| * 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.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.SourceTreeToPsiMap; |
| import com.intellij.psi.impl.source.Constants; |
| import com.intellij.psi.impl.source.tree.ChildRole; |
| import com.intellij.psi.impl.source.tree.CompositePsiElement; |
| import com.intellij.psi.impl.source.tree.TreeElement; |
| import com.intellij.psi.scope.PsiScopeProcessor; |
| import com.intellij.psi.scope.util.PsiScopesUtil; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.tree.ChildRoleBase; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class PsiForStatementImpl extends CompositePsiElement implements PsiForStatement, Constants { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.PsiForStatementImpl"); |
| |
| public PsiForStatementImpl() { |
| super(FOR_STATEMENT); |
| } |
| |
| @Override |
| public PsiStatement getInitialization(){ |
| return (PsiStatement)findChildByRoleAsPsiElement(ChildRole.FOR_INITIALIZATION); |
| } |
| |
| @Override |
| public PsiExpression getCondition(){ |
| return (PsiExpression)findChildByRoleAsPsiElement(ChildRole.CONDITION); |
| } |
| |
| @Override |
| public PsiStatement getUpdate(){ |
| return (PsiStatement)findChildByRoleAsPsiElement(ChildRole.FOR_UPDATE); |
| } |
| |
| @Override |
| public PsiStatement getBody(){ |
| return (PsiStatement)findChildByRoleAsPsiElement(ChildRole.LOOP_BODY); |
| } |
| |
| @Override |
| public PsiJavaToken getLParenth() { |
| return (PsiJavaToken) findChildByRoleAsPsiElement(ChildRole.LPARENTH); |
| } |
| |
| @Override |
| public PsiJavaToken getRParenth() { |
| return (PsiJavaToken) findChildByRoleAsPsiElement(ChildRole.RPARENTH); |
| } |
| |
| @Override |
| public ASTNode findChildByRole(int role){ |
| LOG.assertTrue(ChildRole.isUnique(role)); |
| switch(role){ |
| default: |
| return null; |
| |
| case ChildRole.FOR_KEYWORD: |
| return findChildByType(FOR_KEYWORD); |
| |
| case ChildRole.LPARENTH: |
| return findChildByType(LPARENTH); |
| |
| case ChildRole.FOR_INITIALIZATION: |
| final ASTNode initialization = PsiImplUtil.findStatementChild(this); |
| // should be inside parens |
| ASTNode paren = findChildByRole(ChildRole.LPARENTH); |
| for(ASTNode child = paren; child != null; child = child.getTreeNext()){ |
| if (child == initialization) return initialization; |
| if (child.getElementType() == RPARENTH) return null; |
| } |
| return null; |
| |
| case ChildRole.CONDITION: |
| return findChildByType(EXPRESSION_BIT_SET); |
| |
| case ChildRole.FOR_SEMICOLON: |
| return findChildByType(SEMICOLON); |
| |
| case ChildRole.FOR_UPDATE: |
| { |
| ASTNode semicolon = findChildByRole(ChildRole.FOR_SEMICOLON); |
| for(ASTNode child = semicolon; child != null; child = child.getTreeNext()){ |
| if (child.getPsi() instanceof PsiStatement) { |
| return child; |
| } |
| if (child.getElementType() == RPARENTH) break; |
| } |
| return null; |
| } |
| |
| case ChildRole.RPARENTH: |
| return findChildByType(RPARENTH); |
| |
| case ChildRole.LOOP_BODY: |
| { |
| ASTNode rparenth = findChildByRole(ChildRole.RPARENTH); |
| for(ASTNode child = rparenth; child != null; child = child.getTreeNext()){ |
| if (child.getPsi() instanceof PsiStatement) { |
| return child; |
| } |
| } |
| return null; |
| } |
| } |
| } |
| |
| @Override |
| public int getChildRole(ASTNode child) { |
| LOG.assertTrue(child.getTreeParent() == this); |
| IElementType i = child.getElementType(); |
| if (i == FOR_KEYWORD) { |
| return ChildRole.FOR_KEYWORD; |
| } |
| else if (i == LPARENTH) { |
| return ChildRole.LPARENTH; |
| } |
| else if (i == RPARENTH) { |
| return ChildRole.RPARENTH; |
| } |
| else if (i == SEMICOLON) { |
| return ChildRole.FOR_SEMICOLON; |
| } |
| else { |
| if (EXPRESSION_BIT_SET.contains(child.getElementType())) { |
| return ChildRole.CONDITION; |
| } |
| else if (child.getPsi() instanceof PsiStatement) { |
| int role = getChildRole(child, ChildRole.FOR_INITIALIZATION); |
| if (role != ChildRoleBase.NONE) return role; |
| role = getChildRole(child, ChildRole.FOR_UPDATE); |
| if (role != ChildRoleBase.NONE) return role; |
| return ChildRole.LOOP_BODY; |
| } |
| else { |
| return ChildRoleBase.NONE; |
| } |
| } |
| } |
| |
| @Override |
| public void accept(@NotNull PsiElementVisitor visitor){ |
| if (visitor instanceof JavaElementVisitor) { |
| ((JavaElementVisitor)visitor).visitForStatement(this); |
| } |
| else { |
| visitor.visitElement(this); |
| } |
| } |
| |
| public String toString(){ |
| return "PsiForStatement"; |
| } |
| |
| @Override |
| public void deleteChildInternal(@NotNull ASTNode child) { |
| final boolean isForInitialization = getChildRole(child) == ChildRole.FOR_INITIALIZATION; |
| |
| if (isForInitialization) { |
| try { |
| final PsiStatement emptyStatement = JavaPsiFacade.getInstance(getProject()).getElementFactory().createStatementFromText(";", null); |
| super.replaceChildInternal(child, (TreeElement)SourceTreeToPsiMap.psiElementToTree(emptyStatement)); |
| } |
| catch (IncorrectOperationException e) { |
| LOG.error(e); |
| } |
| } |
| else { |
| super.deleteChildInternal(child); |
| } |
| } |
| |
| @Override |
| public boolean processDeclarations(@NotNull PsiScopeProcessor processor, @NotNull ResolveState state, PsiElement lastParent, @NotNull PsiElement place) { |
| processor.handleEvent(PsiScopeProcessor.Event.SET_DECLARATION_HOLDER, this); |
| if (lastParent == null || lastParent.getParent() != this) |
| // Parent element should not see our vars |
| return true; |
| |
| return PsiScopesUtil.walkChildrenScopes(this, processor, state, lastParent, place); |
| } |
| } |