src/com/facebook/buck/rules/coercer/LeafTypeCoercer.java

/*
 * Copyright 2013-present Facebook, Inc.
 *
 * 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.facebook.buck.rules.coercer;

import com.google.common.base.Optional;

/**
 * Superclass of coercers for non-collection/map types.
 */
public abstract class LeafTypeCoercer<T> implements TypeCoercer<T> {

  @Override
  public boolean hasElementClass(Class<?>... types) {
    for (Class<?> type : types) {
      if (type.isAssignableFrom(getOutputClass())) {
        return true;
      }
    }
    return false;
  }

  @Override
  public void traverse(Object object, Traversal traversal) {
    traversal.traverse(object);
  }

  @Override
  public Optional<T> getOptionalValue() {
    return Optional.absent();
  }
}