/*
* Copyright 2013-2016 Sergey Ignatov, Alexander Zolotov, Florin Patan
*
* 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.goide.usages;
import com.goide.psi.GoFunctionOrMethodDeclaration;
import com.goide.psi.GoNamedElement;
import com.goide.psi.GoTypeSpec;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiElement;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.usages.PsiElementUsageGroupBase;
import com.intellij.usages.impl.FileStructureGroupRuleProvider;
import com.intellij.usages.rules.PsiElementUsage;
import com.intellij.usages.rules.UsageGroupingRule;
import org.jetbrains.annotations.Nullable;
public class GoFileStructureGroupRuleProvider implements FileStructureGroupRuleProvider {
public static final UsageGroupingRule USAGE_GROUPING_RULE = usage -> {
PsiElement psiElement = usage instanceof PsiElementUsage ? ((PsiElementUsage)usage).getElement() : null;
GoNamedElement topmostElement = PsiTreeUtil.getParentOfType(psiElement, GoTypeSpec.class, GoFunctionOrMethodDeclaration.class);
if (topmostElement != null) {
return new PsiElementUsageGroupBase<>(topmostElement);
}
return null;
};
@Nullable
@Override
public UsageGroupingRule getUsageGroupingRule(Project project) {
return USAGE_GROUPING_RULE;
}
}