| /* |
| * Copyright 2000-2013 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.jetbrains.python.codeInsight; |
| |
| import com.intellij.lang.annotation.HighlightSeverity; |
| import com.intellij.openapi.util.Comparing; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiReferenceBase; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.ArrayUtil; |
| import com.jetbrains.python.psi.*; |
| import com.jetbrains.python.psi.types.TypeEvalContext; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * @author yole |
| */ |
| public class PyDunderSlotsReference extends PsiReferenceBase<PyStringLiteralExpression> implements PsiReferenceEx { |
| public PyDunderSlotsReference(@NotNull PyStringLiteralExpression element) { |
| super(element, element.getStringValueTextRanges().get(0)); |
| } |
| |
| @Override |
| public PsiElement resolve() { |
| PyClass referenceClass = PsiTreeUtil.getParentOfType(myElement, PyClass.class); |
| return referenceClass == null ? null : referenceClass.findInstanceAttribute(myElement.getStringValue(), true); |
| } |
| |
| @Override |
| public boolean isReferenceTo(PsiElement element) { |
| if (element instanceof PyExpression && PyUtil.isInstanceAttribute((PyExpression)element)) { |
| PyClass elementClass = PsiTreeUtil.getParentOfType(element, PyClass.class); |
| PyClass referenceClass = PsiTreeUtil.getParentOfType(myElement, PyClass.class); |
| if (referenceClass != null && referenceClass.isSubclass(elementClass)) { |
| String elementName = ((PyTargetExpression) element).getReferencedName(); |
| String referenceName = myElement.getStringValue(); |
| if (Comparing.equal(elementName, referenceName)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| @NotNull |
| @Override |
| public Object[] getVariants() { |
| return ArrayUtil.EMPTY_OBJECT_ARRAY; |
| } |
| |
| @Override |
| public HighlightSeverity getUnresolvedHighlightSeverity(TypeEvalContext context) { |
| return null; |
| } |
| |
| @Override |
| public String getUnresolvedDescription() { |
| return null; |
| } |
| } |