// ~~~~~~~~~~~~~~~~~~~~~~~~~~ //

     ////   ///   /// ///       
   //////  ////   // ////  //// 
 /// ////  ////  //  ////  //// 
///  //// /////  //        ///  
///  //// ///// //  //// ////// 
//   /// /////  //  ////  ////  
 // //// ///// //  ////  ////   
    /////////////  ////  ////   
    ////////////   ///   ///    
    ///// /////   ////  ////    
    ///// /////   //// ///// // 
    ////  ////    /// ///// //  
   ///// /////   ////////////   
   ////  ////     ////  ////    

// The Web framework with class.

// ~~~~~~~~~~~~~~~~~~~~~~~~~~ //

// Copyright (c) 2013 Adam R. Nelson
//
// 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.sector91.wit.params;

public final class Zero implements Params<Arg.Nil> {

  public static final Zero ZERO = new Zero();
  
  private Zero() {}
  
  @Override public int count() {
    return 0;
  }

  @Override public Arg.Nil asArgList() {
    return Arg.NIL;
  }
  
  @Override public boolean equals(Object o) {
    return o == this;
  }

  @Override public int hashCode() {
    return 0;
  }

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

  public static final class Builder extends ParamsBuilder<Zero> {
    @Override public Zero build(Object... items) {
      return ZERO;
    }

    @Override public <PN> One.Builder<PN> next() {
      return new One.Builder<>();
    }
  }
}
