/*

  Copyright 2004-2008 Paul R. Holser, Jr.  All rights reserved.

  Licensed under the Academic Free License version 3.0

  */

 package joptsimple;

 import java.util.List;

 /**

  * <p>Specification of an option that accepts a required argument.</p>

  *

  * @since 1.0

  * @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>

  * @version $Id: RequiredArgumentOptionSpec.java,v 1.4 2008/04/30 19:47:40 pholser Exp $

  */

 class RequiredArgumentOptionSpec extends ArgumentAcceptingOptionSpec {

     RequiredArgumentOptionSpec( String option ) {

         super( option, true );

     }

     RequiredArgumentOptionSpec( List options, String description ) {

         super( options, true, description );

     }

     protected void detectOptionArgument( OptionParser parser, ArgumentList arguments,

         OptionSet detectedOptions ) {

         if ( !arguments.hasMore() )

             throw new OptionMissingRequiredArgumentException( options() );

         addArguments( detectedOptions, arguments.next() );

     }

     void accept( OptionSpecVisitor visitor ) {

         visitor.visit( this );

     }

 }