| /* |
| * 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.tree.ChildRole; |
| import com.intellij.psi.impl.source.tree.CompositePsiElement; |
| import com.intellij.psi.impl.source.tree.ElementType; |
| import com.intellij.psi.impl.source.Constants; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.tree.ChildRoleBase; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class PsiIfStatementImpl extends CompositePsiElement implements PsiIfStatement, Constants { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.PsiIfStatementImpl"); |
| |
| public PsiIfStatementImpl() { |
| super(IF_STATEMENT); |
| } |
| |
| @Override |
| public PsiExpression getCondition() { |
| return (PsiExpression)findChildByRoleAsPsiElement(ChildRole.CONDITION); |
| } |
| |
| @Override |
| public void deleteChildInternal(@NotNull ASTNode child) { |
| if (child == getElseBranch()) { |
| ASTNode elseKeyword = findChildByRole(ChildRole.ELSE_KEYWORD); |
| if (elseKeyword != null) { |
| super.deleteChildInternal(elseKeyword); |
| } |
| } |
| super.deleteChildInternal(child); |
| } |
| |
| @Override |
| public PsiStatement getThenBranch() { |
| return (PsiStatement)findChildByRoleAsPsiElement(ChildRole.THEN_BRANCH); |
| } |
| |
| @Override |
| public PsiStatement getElseBranch() { |
| return (PsiStatement)findChildByRoleAsPsiElement(ChildRole.ELSE_BRANCH); |
| } |
| |
| @Override |
| public PsiJavaToken getLParenth() { |
| return (PsiJavaToken) findChildByRoleAsPsiElement(ChildRole.LPARENTH); |
| } |
| |
| @Override |
| public PsiJavaToken getRParenth() { |
| return (PsiJavaToken) findChildByRoleAsPsiElement(ChildRole.RPARENTH); |
| } |
| |
| @Override |
| public PsiKeyword getElseElement() { |
| return (PsiKeyword)findChildByRoleAsPsiElement(ChildRole.ELSE_KEYWORD); |
| } |
| |
| @Override |
| public void setElseBranch(@NotNull PsiStatement statement) throws IncorrectOperationException { |
| PsiStatement elseBranch = getElseBranch(); |
| if (elseBranch != null) elseBranch.delete(); |
| PsiKeyword elseElement = getElseElement(); |
| if (elseElement != null) elseElement.delete(); |
| |
| PsiElementFactory elementFactory = JavaPsiFacade.getInstance(getProject()).getElementFactory(); |
| PsiIfStatement ifStatement = (PsiIfStatement)elementFactory.createStatementFromText("if (true) {} else {}", null); |
| ifStatement.getElseBranch().replace(statement); |
| |
| addRange(ifStatement.getElseElement(), ifStatement.getLastChild()); |
| } |
| @Override |
| public void setThenBranch(@NotNull PsiStatement statement) throws IncorrectOperationException { |
| PsiElementFactory elementFactory = JavaPsiFacade.getInstance(getProject()).getElementFactory(); |
| ASTNode keyword = findChildByRole(ChildRole.IF_KEYWORD); |
| LOG.assertTrue(keyword != null); |
| PsiIfStatement ifStatementPattern = (PsiIfStatement)elementFactory.createStatementFromText("if (){}", this); |
| if (getLParenth() == null) { |
| addAfter(ifStatementPattern.getLParenth(), keyword.getPsi()); |
| } |
| if (getRParenth() == null) { |
| PsiElement anchor = getCondition() == null ? getLParenth() : getCondition(); |
| addAfter(ifStatementPattern.getRParenth(), anchor); |
| } |
| PsiStatement thenBranch = getThenBranch(); |
| if (thenBranch == null) { |
| addAfter(statement, getRParenth()); |
| } |
| else { |
| thenBranch.replace(statement); |
| } |
| } |
| |
| @Override |
| public ASTNode findChildByRole(int role) { |
| LOG.assertTrue(ChildRole.isUnique(role)); |
| switch(role){ |
| default: |
| return null; |
| |
| case ChildRole.IF_KEYWORD: |
| return findChildByType(IF_KEYWORD); |
| |
| case ChildRole.LPARENTH: |
| return findChildByType(LPARENTH); |
| |
| case ChildRole.CONDITION: |
| return findChildByType(EXPRESSION_BIT_SET); |
| |
| case ChildRole.RPARENTH: |
| return findChildByType(RPARENTH); |
| |
| case ChildRole.THEN_BRANCH: |
| return PsiImplUtil.findStatementChild(this); |
| |
| case ChildRole.ELSE_KEYWORD: |
| return findChildByType(ELSE_KEYWORD); |
| |
| case ChildRole.ELSE_BRANCH: |
| { |
| ASTNode elseKeyword = findChildByRole(ChildRole.ELSE_KEYWORD); |
| if (elseKeyword == null) return null; |
| for(ASTNode child = elseKeyword.getTreeNext(); 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 == IF_KEYWORD) { |
| return ChildRole.IF_KEYWORD; |
| } |
| else if (i == ELSE_KEYWORD) { |
| return ChildRole.ELSE_KEYWORD; |
| } |
| else if (i == LPARENTH) { |
| return ChildRole.LPARENTH; |
| } |
| else if (i == RPARENTH) { |
| return ChildRole.RPARENTH; |
| } |
| else { |
| if (ElementType.EXPRESSION_BIT_SET.contains(child.getElementType())) { |
| return ChildRole.CONDITION; |
| } |
| else if (child.getPsi() instanceof PsiStatement) { |
| if (findChildByRoleAsPsiElement(ChildRole.THEN_BRANCH) == child) { |
| return ChildRole.THEN_BRANCH; |
| } |
| else { |
| return ChildRole.ELSE_BRANCH; |
| } |
| } |
| else { |
| return ChildRoleBase.NONE; |
| } |
| } |
| } |
| |
| @Override |
| public void accept(@NotNull PsiElementVisitor visitor) { |
| if (visitor instanceof JavaElementVisitor) { |
| ((JavaElementVisitor)visitor).visitIfStatement(this); |
| } |
| else { |
| visitor.visitElement(this); |
| } |
| } |
| |
| public String toString() { |
| return "PsiIfStatement"; |
| } |
| } |