// -*- Mode: c++; c-basic-offset: 4; tab-width: 4; -*-

/******************************************************************************
 *
 *  file:  VersionVisitor.h
 *
 *  Copyright (c) 2003, Michael E. Smoot .
 *  All rights reverved.
 *
 *  See the file COPYING in the top directory of this distribution for
 *  more information.
 *
 *  THE SOFTWARE IS PROVIDED _AS IS_, WITHOUT WARRANTY OF ANY KIND, EXPRESS
 *  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 *  DEALINGS IN THE SOFTWARE.
 *
 *****************************************************************************/


#ifndef TCLAP_VERSION_VISITOR_H
#define TCLAP_VERSION_VISITOR_H

#include <tclap/CmdLineInterface.h>
#include <tclap/CmdLineOutput.h>
#include <tclap/Visitor.h>

namespace TCLAP
{

/**
 * A Vistor that will call the version method of the given CmdLineOutput
 * for the specified CmdLine object and then exit.
 */
class VersionVisitor : public Visitor
{
protected:
  /**
   * The CmdLine of interest.
   */
  CmdLineInterface * _cmd;

  /**
   * The output object.
   */
  CmdLineOutput ** _out;

public:
  /**
   * Constructor.
   * \param cmd - The CmdLine the output is generated for.
   * \param out - The type of output.
   */
  VersionVisitor(CmdLineInterface * cmd, CmdLineOutput ** out)
    : Visitor()
    , _cmd(cmd)
    , _out(out)
  {}

  /**
   * Calls the version method of the output object using the
   * specified CmdLine.
   */
  void
  visit()
  {
    (*_out)->version(*_cmd);
    throw ExitException(0);
  }
};

} // namespace TCLAP

#endif
