| /* |
| * Copyright 2000-2014 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 org.jetbrains.plugins.groovy.lang.completion; |
| |
| import com.intellij.codeInsight.PsiEquivalenceUtil; |
| import com.intellij.codeInsight.completion.PrefixMatcher; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.containers.ContainerUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyPsiElement; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.typedef.members.GrMember; |
| import org.jetbrains.plugins.groovy.lang.psi.util.PsiUtil; |
| |
| import java.util.Collections; |
| import java.util.Set; |
| |
| /** |
| * Created by Max Medvedev on 25/04/14 |
| */ |
| public class CompleteReferencesWithSameQualifier { |
| private final GrReferenceExpression myRefExpr; |
| private final PrefixMatcher myMatcher; |
| private final GrExpression myQualifier; |
| |
| private CompleteReferencesWithSameQualifier(@NotNull GrReferenceExpression refExpr, |
| @NotNull PrefixMatcher matcher, |
| @Nullable GrExpression qualifier) { |
| myRefExpr = refExpr; |
| myMatcher = matcher; |
| myQualifier = qualifier; |
| } |
| |
| @NotNull |
| public static Set<String> getVariantsWithSameQualifier(@NotNull GrReferenceExpression refExpr, |
| @NotNull PrefixMatcher matcher, |
| @Nullable GrExpression qualifier) { |
| return new CompleteReferencesWithSameQualifier(refExpr, matcher, qualifier).getVariantsWithSameQualifierImpl(); |
| } |
| |
| private Set<String> getVariantsWithSameQualifierImpl() { |
| if (myQualifier != null && myQualifier.getType() != null) return Collections.emptySet(); |
| |
| final PsiElement scope = PsiTreeUtil.getParentOfType(myRefExpr, GrMember.class, PsiFile.class); |
| Set<String> result = ContainerUtil.newLinkedHashSet(); |
| if (scope != null) { |
| addVariantsWithSameQualifier(scope, result); |
| } |
| return result; |
| } |
| |
| private void addVariantsWithSameQualifier(@NotNull PsiElement element, @NotNull Set<String> result) { |
| if (element instanceof GrReferenceExpression && element != myRefExpr && !PsiUtil.isLValue((GroovyPsiElement)element)) { |
| final GrReferenceExpression refExpr = (GrReferenceExpression)element; |
| final String refName = refExpr.getReferenceName(); |
| if (refName != null && !result.contains(refName) && myMatcher.prefixMatches(refName)) { |
| final GrExpression hisQualifier = refExpr.getQualifierExpression(); |
| if (hisQualifier != null && myQualifier != null) { |
| if (PsiEquivalenceUtil.areElementsEquivalent(hisQualifier, myQualifier)) { |
| if (refExpr.resolve() == null) { |
| result.add(refName); |
| } |
| } |
| } |
| else if (hisQualifier == null && myQualifier == null) { |
| if (refExpr.resolve() == null) { |
| result.add(refName); |
| } |
| } |
| } |
| } |
| |
| for (PsiElement child = element.getFirstChild(); child != null; child = child.getNextSibling()) { |
| addVariantsWithSameQualifier(child, result); |
| } |
| } |
| } |