/*

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

  Licensed under the Academic Free License version 3.0

  */

 package joptsimple;

 import java.util.Collections;

 /**

  * <p>Represents the <kbd>"-W"</kbd> form of long option specification.</p>

  *

  * @since 1.0

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

  * @version $Id: AlternativeLongOptionSpec.java,v 1.2 2008/04/08 03:20:18 pholser Exp $

  */

 class AlternativeLongOptionSpec extends ArgumentAcceptingOptionSpec {

     AlternativeLongOptionSpec() {

         super( Collections.singletonList( ParserRules.RESERVED_FOR_EXTENSIONS ), true,

             "Alternative form of long options" );

         describedAs( "opt=value" );

     }

     protected void detectOptionArgument( OptionParser parser, ArgumentList arguments,

         OptionSet detectedOptions ) {

         if ( !arguments.hasMore() )

             throw new OptionMissingRequiredArgumentException( options() );

         arguments.treatNextAsLongOption();

     }

     void accept( OptionSpecVisitor visitor ) {

         visitor.visit( this );

     }

 }