src/main/java/com/google/devtools/build/lib/analysis/config/transitions/TransitionUtil.java

// Copyright 2017 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.devtools.build.lib.analysis.config.transitions;

import com.google.devtools.build.lib.analysis.config.BuildOptions;
import com.google.devtools.build.lib.analysis.config.BuildOptionsView;

/** Utility methods for configuration transitions. */
public class TransitionUtil {
  private TransitionUtil() {}

  /**
   * Returns a {@link BuildOptionsView} bound to the fragment options a {@link
   * ConfigurationTransition} reads.
   */
  public static BuildOptionsView restrict(
      ConfigurationTransition transition, BuildOptions options) {
    return new BuildOptionsView(options, transition.requiresOptionFragments());
  }
}