com.google.idea.blaze.base.targetmaps.SourceToTargetMapImpl.java Source code

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Here is the source code for com.google.idea.blaze.base.targetmaps.SourceToTargetMapImpl.java

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/*
 * Copyright 2016 The Bazel Authors. All rights reserved.
 *
 * 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.google.idea.blaze.base.targetmaps;

import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMultimap;
import com.google.idea.blaze.base.ideinfo.ArtifactLocation;
import com.google.idea.blaze.base.ideinfo.TargetIdeInfo;
import com.google.idea.blaze.base.ideinfo.TargetKey;
import com.google.idea.blaze.base.model.BlazeProjectData;
import com.google.idea.blaze.base.model.primitives.Label;
import com.google.idea.blaze.base.projectview.ProjectViewSet;
import com.google.idea.blaze.base.scope.BlazeContext;
import com.google.idea.blaze.base.settings.BlazeImportSettings;
import com.google.idea.blaze.base.sync.BlazeSyncParams.SyncMode;
import com.google.idea.blaze.base.sync.SyncListener;
import com.google.idea.blaze.base.sync.data.BlazeProjectDataManager;
import com.google.idea.blaze.base.sync.workspace.ArtifactLocationDecoder;
import com.intellij.openapi.components.ServiceManager;
import com.intellij.openapi.project.Project;
import java.io.File;
import java.util.Objects;
import java.util.stream.Collectors;
import javax.annotation.Nullable;

/** Maps source files to their respective targets */
public class SourceToTargetMapImpl implements SourceToTargetMap {
    private final Project project;
    private ImmutableMultimap<File, TargetKey> sourceToTargetMap;

    public static SourceToTargetMapImpl getImpl(Project project) {
        return (SourceToTargetMapImpl) ServiceManager.getService(project, SourceToTargetMap.class);
    }

    public SourceToTargetMapImpl(Project project) {
        this.project = project;
    }

    @Override
    public ImmutableCollection<Label> getTargetsToBuildForSourceFile(File sourceFile) {
        BlazeProjectData blazeProjectData = BlazeProjectDataManager.getInstance(project).getBlazeProjectData();
        if (blazeProjectData == null) {
            return ImmutableList.of();
        }
        return ImmutableList.copyOf(getRulesForSourceFile(sourceFile).stream().map(blazeProjectData.targetMap::get)
                .filter(Objects::nonNull)
                // TODO(tomlu): For non-plain targets we need to rdep our way back to a target to build
                // Without this, you won't be able to invoke "build" on (say) a proto_library
                .filter(TargetIdeInfo::isPlainTarget).map(rule -> rule.key.label).collect(Collectors.toList()));
    }

    @Override
    public ImmutableCollection<TargetKey> getRulesForSourceFile(File sourceFile) {
        ImmutableMultimap<File, TargetKey> sourceToTargetMap = getSourceToTargetMap();
        if (sourceToTargetMap == null) {
            return ImmutableList.of();
        }
        return sourceToTargetMap.get(sourceFile);
    }

    @Nullable
    private synchronized ImmutableMultimap<File, TargetKey> getSourceToTargetMap() {
        if (this.sourceToTargetMap == null) {
            this.sourceToTargetMap = initSourceToTargetMap();
        }
        return this.sourceToTargetMap;
    }

    private synchronized void clearSourceToTargetMap() {
        this.sourceToTargetMap = null;
    }

    @Nullable
    private ImmutableMultimap<File, TargetKey> initSourceToTargetMap() {
        BlazeProjectData blazeProjectData = BlazeProjectDataManager.getInstance(project).getBlazeProjectData();
        if (blazeProjectData == null) {
            return null;
        }
        ArtifactLocationDecoder artifactLocationDecoder = blazeProjectData.artifactLocationDecoder;
        ImmutableMultimap.Builder<File, TargetKey> sourceToTargetMap = ImmutableMultimap.builder();
        for (TargetIdeInfo target : blazeProjectData.targetMap.targets()) {
            TargetKey key = target.key;
            for (ArtifactLocation sourceArtifact : target.sources) {
                sourceToTargetMap.put(artifactLocationDecoder.decode(sourceArtifact), key);
            }
        }
        return sourceToTargetMap.build();
    }

    static class ClearSourceToTargetMap extends SyncListener.Adapter {
        @Override
        public void onSyncComplete(Project project, BlazeContext context, BlazeImportSettings importSettings,
                ProjectViewSet projectViewSet, BlazeProjectData blazeProjectData, SyncMode syncMode,
                SyncResult syncResult) {
            getImpl(project).clearSourceToTargetMap();
        }
    }
}