src/main/java/com/google/devtools/build/lib/syntax/SkylarkModuleNameResolver.java

// Copyright 2015 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.syntax;

/**
 * Helper class that resolves the name of classes with SkylarkModule annotation.
 */
public final class SkylarkModuleNameResolver implements FragmentClassNameResolver {
  /**
   * Returns the Skylark name of the given class or null, if the SkylarkModule annotation is not
   * present.
   */
  @Override
  public String resolveName(Class<?> clazz) {
    SkylarkModule annotation = clazz.getAnnotation(SkylarkModule.class);
    return (annotation == null) ? null : annotation.name();
  }
}