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/******************************************************************************
*
* file: HelpVisitor.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_HELP_VISITOR_H
#define TCLAP_HELP_VISITOR_H
#include <tclap/CmdLineInterface.h>
#include <tclap/CmdLineOutput.h>
#include <tclap/Visitor.h>
namespace TCLAP
{
/**
* A Visitor object that calls the usage method of the given CmdLineOutput
* object for the specified CmdLine object.
*/
class HelpVisitor : public Visitor
{
protected:
/**
* The CmdLine the output will be generated for.
*/
CmdLineInterface *_cmd;
/**
* The output object.
*/
CmdLineOutput **_out;
public:
/**
* Constructor.
* \param cmd - The CmdLine the output will be generated for.
* \param out - The type of output.
*/
HelpVisitor(CmdLineInterface *cmd, CmdLineOutput **out) :
Visitor(), _cmd(cmd), _out(out)
{
}
/**
* Calls the usage method of the CmdLineOutput for the
* specified CmdLine.
*/
void visit()
{
(*_out)->usage(*_cmd);
throw ExitException(0);
}
};
}
#endif
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