br.com.objectos.args.Empty Maven / Gradle / Ivy

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/*
 * Copyright 2016 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.args;

import java.util.stream.Stream;

/**
 * @author [email protected] (Marcio Endo)
 */
class Empty extends Part {

  private final String value;

  private Empty(Part next, String value) {
    super(next);
    this.value = value;
  }

  public static Empty of(Part next, String value) {
    return new Empty(next, value);
  }

  @Override
  public String toString() {
    return "";
  }

  @Override
  void acceptOptionMap(OptionMap.Builder optionMap) {
    // noop
  }

  @Override
  Stream upgradeIfPossible(Box box) {
    return value.isEmpty()
        ? Stream.of()
        : Argument.of(next, value).upgradeIfPossible(box);
  }

}