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/*
* 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 com.intellij.psi;
import com.intellij.openapi.components.AbstractProjectComponent;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.VirtualFileWithId;
import com.intellij.psi.search.GlobalSearchScope;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Collection;
public abstract class RefResolveService extends AbstractProjectComponent {
public RefResolveService(Project project) {
super(project);
}
public static RefResolveService getInstance(Project project) {
return project.getComponent(RefResolveService.class);
}
@Nullable("null means the service has not resolved all files and is not ready yet")
public abstract int[] getBackwardIds(@NotNull VirtualFileWithId file);
/**
* @return subset of scope containing only files which reference the virtualFile
*/
@NotNull
public abstract GlobalSearchScope restrictByBackwardIds(@NotNull VirtualFile virtualFile, @NotNull GlobalSearchScope scope);
/**
* @return add files to the resolve queue. until all files from there are resolved, the service is in incomplete state and returns null from getBackwardIds()
*/
public abstract boolean queue(@NotNull Collection<VirtualFile> files, Object reason);
}
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