| /* |
| * 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.psi.impl; |
| |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.jetbrains.python.psi.*; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| |
| /** |
| * @author yole |
| */ |
| public class PyKeywordArgumentReference extends PsiReferenceBase.Poly<PyKeywordArgument> { |
| public PyKeywordArgumentReference(@NotNull PyKeywordArgument element, TextRange textRange) { |
| super(element, textRange, true); |
| } |
| |
| @NotNull |
| @Override |
| public ResolveResult[] multiResolve(boolean incompleteCode) { |
| final String keyword = myElement.getKeyword(); |
| if (keyword == null) { |
| return ResolveResult.EMPTY_ARRAY; |
| } |
| PsiElement call = PsiTreeUtil.getParentOfType(myElement, PyCallExpression.class, PyClass.class); |
| if (!(call instanceof PyCallExpression)) { |
| return ResolveResult.EMPTY_ARRAY; |
| } |
| final PyExpression callee = ((PyCallExpression)call).getCallee(); |
| if (callee == null) return ResolveResult.EMPTY_ARRAY; |
| final PsiPolyVariantReference calleeReference = (PsiPolyVariantReference) callee.getReference(); |
| if (calleeReference == null) return ResolveResult.EMPTY_ARRAY; |
| final ResolveResult[] calleeCandidates = calleeReference.multiResolve(incompleteCode); |
| List<ResolveResult> resultList = new ArrayList<ResolveResult>(); |
| for (ResolveResult calleeCandidate : calleeCandidates) { |
| if (!calleeCandidate.isValidResult()) continue; |
| final PsiElement element = calleeCandidate.getElement(); |
| if (element == null) continue; |
| final PyFunction calleeFunction = resolveToFunction(element, new HashSet<PsiElement>()); |
| if (calleeFunction != null) { |
| final PsiElement result = calleeFunction.getParameterList().findParameterByName(keyword); |
| if (result != null) { |
| resultList.add(new PsiElementResolveResult(result)); |
| } |
| } |
| } |
| return resultList.toArray(new ResolveResult[resultList.size()]); |
| } |
| |
| @Nullable |
| private static PyFunction resolveToFunction(PsiElement element, HashSet<PsiElement> visited) { |
| if (visited.contains(element)) { |
| return null; |
| } |
| visited.add(element); |
| if (element instanceof PyFunction) { |
| return (PyFunction)element; |
| } |
| if (element instanceof PyTargetExpression) { |
| final PyExpression assignedValue = ((PyTargetExpression)element).findAssignedValue(); |
| return resolveToFunction(assignedValue, visited); |
| } |
| if (element instanceof PyReferenceExpression) { |
| final PsiElement resolveResult = ((PyReferenceExpression)element).getReference().resolve(); |
| return resolveToFunction(resolveResult, visited); |
| } |
| return null; |
| } |
| |
| @NotNull |
| @Override |
| public Object[] getVariants() { |
| return new Object[0]; //To change body of implemented methods use File | Settings | File Templates. |
| } |
| } |