| /* |
| * 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.source.Constants; |
| import com.intellij.psi.impl.source.tree.ChildRole; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.tree.ChildRoleBase; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.psi.util.PsiUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| public class PsiSuperExpressionImpl extends ExpressionPsiElement implements PsiSuperExpression, Constants { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.PsiSuperExpressionImpl"); |
| |
| public PsiSuperExpressionImpl() { |
| super(SUPER_EXPRESSION); |
| } |
| |
| @Override |
| public PsiJavaCodeReferenceElement getQualifier() { |
| return (PsiJavaCodeReferenceElement)findChildByRoleAsPsiElement(ChildRole.QUALIFIER); |
| } |
| |
| @Override |
| public PsiType getType() { |
| final PsiJavaCodeReferenceElement qualifier = getQualifier(); |
| if (qualifier != null) { |
| final PsiElement aClass = qualifier.resolve(); |
| if (!(aClass instanceof PsiClass)) return null; |
| return getSuperType((PsiClass)aClass, PsiUtil.isLanguageLevel8OrHigher(this)); |
| } |
| |
| for (PsiElement scope = getContext(); scope != null; scope = scope.getContext()) { |
| if (scope instanceof PsiClass) { |
| final PsiClass aClass = (PsiClass)scope; |
| return getSuperType(aClass, false); |
| } |
| if (scope instanceof PsiExpressionList && scope.getParent() instanceof PsiAnonymousClass) { |
| //noinspection AssignmentToForLoopParameter |
| scope = scope.getParent(); |
| } |
| else if (scope instanceof JavaCodeFragment) { |
| PsiType fragmentSuperType = ((JavaCodeFragment)scope).getSuperType(); |
| if (fragmentSuperType != null) return fragmentSuperType; |
| } |
| } |
| |
| return null; |
| } |
| |
| @Nullable |
| private PsiType getSuperType(PsiClass aClass, boolean checkImmediateSuperInterfaces) { |
| if (CommonClassNames.JAVA_LANG_OBJECT.equals(aClass.getQualifiedName())) return null; |
| |
| final PsiClass containingClass = checkImmediateSuperInterfaces ? PsiTreeUtil.getParentOfType(this, PsiClass.class) : null; |
| if (containingClass != null) { |
| final PsiClassType[] superTypes; |
| if (containingClass.isInterface()) { |
| superTypes = containingClass.getExtendsListTypes(); |
| } |
| else if (containingClass instanceof PsiAnonymousClass) { |
| superTypes = new PsiClassType[]{((PsiAnonymousClass)containingClass).getBaseClassType()}; |
| } |
| else { |
| superTypes = containingClass.getImplementsListTypes(); |
| } |
| |
| for (PsiClassType superType : superTypes) { |
| final PsiClass superClass = superType.resolve(); |
| if (superClass != null && superClass.isInterface() && aClass.equals(superClass)) return superType; |
| } |
| } |
| |
| if (aClass.isInterface()) { |
| return PsiType.getJavaLangObject(getManager(), getResolveScope()); |
| } |
| |
| if (aClass instanceof PsiAnonymousClass) { |
| final PsiClassType baseClassType = ((PsiAnonymousClass)aClass).getBaseClassType(); |
| final PsiClass psiClass = baseClassType.resolve(); |
| return psiClass != null && !psiClass.isInterface() ? baseClassType : PsiType.getJavaLangObject(getManager(), getResolveScope()); |
| } |
| |
| final PsiClassType[] superTypes = aClass.getExtendsListTypes(); |
| return superTypes.length == 0 ? PsiType.getJavaLangObject(getManager(), getResolveScope()) : superTypes[0]; |
| } |
| |
| @Override |
| public ASTNode findChildByRole(int role) { |
| LOG.assertTrue(ChildRole.isUnique(role)); |
| switch (role) { |
| default: |
| return null; |
| |
| case ChildRole.QUALIFIER: |
| return getFirstChildNode().getElementType() == JAVA_CODE_REFERENCE ? getFirstChildNode() : null; |
| |
| case ChildRole.DOT: |
| return findChildByType(DOT); |
| |
| case ChildRole.SUPER_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 == SUPER_KEYWORD) { |
| return ChildRole.SUPER_KEYWORD; |
| } |
| else { |
| return ChildRoleBase.NONE; |
| } |
| } |
| |
| @Override |
| public void accept(@NotNull PsiElementVisitor visitor) { |
| if (visitor instanceof JavaElementVisitor) { |
| ((JavaElementVisitor)visitor).visitSuperExpression(this); |
| } |
| else { |
| visitor.visitElement(this); |
| } |
| } |
| |
| public String toString() { |
| return "PsiSuperExpression:" + getText(); |
| } |
| } |