| /* |
| * 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.PsiClassReferenceType; |
| import com.intellij.psi.impl.source.PsiImmediateClassType; |
| 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 PsiThisExpressionImpl extends ExpressionPsiElement implements PsiThisExpression, Constants { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.PsiThisExpressionImpl"); |
| |
| public PsiThisExpressionImpl() { |
| super(THIS_EXPRESSION); |
| } |
| |
| @Override |
| public PsiJavaCodeReferenceElement getQualifier() { |
| return (PsiJavaCodeReferenceElement)findChildByRoleAsPsiElement(ChildRole.QUALIFIER); |
| } |
| |
| @Override |
| public PsiType getType() { |
| PsiJavaCodeReferenceElement qualifier = getQualifier(); |
| if (qualifier != null){ |
| PsiElement qualifierResolve = qualifier.resolve(); |
| if (qualifierResolve instanceof PsiClass) return new PsiImmediateClassType((PsiClass)qualifierResolve, PsiSubstitutor.EMPTY); |
| return new PsiClassReferenceType(qualifier, null); |
| } |
| for(PsiElement scope = getContext(); scope != null; scope = scope.getContext()){ |
| if (scope instanceof PsiClass){ |
| PsiClass aClass = (PsiClass)scope; |
| return new PsiImmediateClassType(aClass, PsiSubstitutor.EMPTY); |
| } |
| else if (scope instanceof PsiExpressionList && scope.getParent() instanceof PsiAnonymousClass){ |
| scope = scope.getParent(); |
| } |
| else if (scope instanceof JavaCodeFragment){ |
| PsiType fragmentThisType = ((JavaCodeFragment)scope).getThisType(); |
| if (fragmentThisType != null) return fragmentThisType; |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public ASTNode findChildByRole(int role) { |
| LOG.assertTrue(ChildRole.isUnique(role)); |
| switch(role){ |
| default: |
| return null; |
| |
| case ChildRole.QUALIFIER: |
| if (getFirstChildNode().getElementType() == JAVA_CODE_REFERENCE){ |
| return getFirstChildNode(); |
| } |
| else{ |
| return null; |
| } |
| |
| case ChildRole.DOT: |
| return findChildByType(DOT); |
| |
| case ChildRole.THIS_KEYWORD: |
| return getLastChildNode(); |
| } |
| } |
| |
| @Override |
| public int getChildRole(ASTNode child) { |
| LOG.assertTrue(child.getTreeParent() == this); |
| IElementType i = child.getElementType(); |
| if (i == JAVA_CODE_REFERENCE) { |
| return ChildRole.QUALIFIER; |
| } |
| else if (i == DOT) { |
| return ChildRole.DOT; |
| } |
| else if (i == THIS_KEYWORD) { |
| return ChildRole.THIS_KEYWORD; |
| } |
| else { |
| return ChildRoleBase.NONE; |
| } |
| } |
| |
| @Override |
| public void accept(@NotNull PsiElementVisitor visitor) { |
| if (visitor instanceof JavaElementVisitor) { |
| ((JavaElementVisitor)visitor).visitThisExpression(this); |
| } |
| else { |
| visitor.visitElement(this); |
| } |
| } |
| |
| public String toString() { |
| return "PsiThisExpression:" + getText(); |
| } |
| } |
| |