src/main/java/com/google/devtools/build/lib/rules/test/InstrumentedFilesProviderImpl.java


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// Copyright 2014 Google Inc. 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.devtools.build.lib.rules.test;

import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.collect.nestedset.Order;

import java.util.Map;

/**
 * An implementation class for the InstrumentedFilesProvider interface.
 */
public final class InstrumentedFilesProviderImpl implements InstrumentedFilesProvider {
  public static final InstrumentedFilesProvider EMPTY = new InstrumentedFilesProvider() {
    @Override
    public NestedSet<Artifact> getInstrumentedFiles() {
      return NestedSetBuilder.<Artifact>emptySet(Order.STABLE_ORDER);
    }
    @Override
    public NestedSet<Artifact> getInstrumentationMetadataFiles() {
      return NestedSetBuilder.<Artifact>emptySet(Order.STABLE_ORDER);
    }
    @Override
    public Map<String, String> getExtraEnv() {
      return ImmutableMap.of();
    }
  };

  private final NestedSet<Artifact> instrumentedFiles;
  private final NestedSet<Artifact> instrumentationMetadataFiles;
  private final ImmutableMap<String, String> extraEnv;

  public InstrumentedFilesProviderImpl(NestedSet<Artifact> instrumentedFiles,
      NestedSet<Artifact> instrumentationMetadataFiles, Map<String, String> extraEnv) {
    this.instrumentedFiles = instrumentedFiles;
    this.instrumentationMetadataFiles = instrumentationMetadataFiles;
    this.extraEnv = ImmutableMap.copyOf(extraEnv);
  }

  public InstrumentedFilesProviderImpl(InstrumentedFilesCollector collector) {
    this.instrumentedFiles = collector.getInstrumentedFiles();
    this.instrumentationMetadataFiles = collector.getInstrumentationMetadataFiles();
    this.extraEnv = ImmutableMap.of();
  }

  @Override
  public NestedSet<Artifact> getInstrumentedFiles() {
    return instrumentedFiles;
  }

  @Override
  public NestedSet<Artifact> getInstrumentationMetadataFiles() {
    return instrumentationMetadataFiles;
  }

  @Override
  public Map<String, String> getExtraEnv() {
    return extraEnv;
  }
}