| /* |
| * 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.source.Constants; |
| import com.intellij.psi.impl.source.tree.ChildRole; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.tree.ChildRoleBase; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class PsiArrayAccessExpressionImpl extends ExpressionPsiElement implements PsiArrayAccessExpression, Constants { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.PsiArrayAccessExpressionImpl"); |
| |
| public PsiArrayAccessExpressionImpl() { |
| super(ARRAY_ACCESS_EXPRESSION); |
| } |
| |
| @Override |
| @NotNull |
| public PsiExpression getArrayExpression() { |
| return (PsiExpression)findChildByRoleAsPsiElement(ChildRole.ARRAY); |
| } |
| |
| @Override |
| public PsiExpression getIndexExpression() { |
| return (PsiExpression)findChildByRoleAsPsiElement(ChildRole.INDEX); |
| } |
| |
| @Override |
| public PsiType getType() { |
| PsiType arrayType = getArrayExpression().getType(); |
| if (!(arrayType instanceof PsiArrayType)) return null; |
| return GenericsUtil.getVariableTypeByExpressionType(((PsiArrayType)arrayType).getComponentType(), false); |
| } |
| |
| @Override |
| public ASTNode findChildByRole(int role) { |
| LOG.assertTrue(ChildRole.isUnique(role)); |
| switch(role){ |
| default: |
| return null; |
| |
| case ChildRole.ARRAY: |
| return getFirstChildNode(); |
| |
| case ChildRole.INDEX: |
| { |
| ASTNode lbracket = findChildByRole(ChildRole.LBRACKET); |
| if (lbracket == null) return null; |
| for(ASTNode child = lbracket.getTreeNext(); child != null; child = child.getTreeNext()){ |
| if (EXPRESSION_BIT_SET.contains(child.getElementType())){ |
| return child; |
| } |
| } |
| return null; |
| } |
| |
| case ChildRole.LBRACKET: |
| return findChildByType(LBRACKET); |
| |
| case ChildRole.RBRACKET: |
| return findChildByType(RBRACKET); |
| } |
| } |
| |
| @Override |
| public int getChildRole(ASTNode child) { |
| LOG.assertTrue(child.getTreeParent() == this); |
| IElementType i = child.getElementType(); |
| if (i == LBRACKET) { |
| return ChildRole.LBRACKET; |
| } |
| else if (i == RBRACKET) { |
| return ChildRole.RBRACKET; |
| } |
| else { |
| if (EXPRESSION_BIT_SET.contains(child.getElementType())) { |
| return child == getFirstChildNode() ? ChildRole.ARRAY : ChildRole.INDEX; |
| } |
| else { |
| return ChildRoleBase.NONE; |
| } |
| } |
| } |
| |
| @Override |
| public void accept(@NotNull PsiElementVisitor visitor) { |
| if (visitor instanceof JavaElementVisitor) { |
| ((JavaElementVisitor)visitor).visitArrayAccessExpression(this); |
| } |
| else { |
| visitor.visitElement(this); |
| } |
| } |
| |
| public String toString() { |
| return "PsiArrayAccessExpression:" + getText(); |
| } |
| } |
| |