OptionalUnlabeledTracker.h
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// -*- Mode: c++; c-basic-offset: 4; tab-width: 4; -*-
/******************************************************************************
*
* file: OptionalUnlabeledTracker.h
*
* Copyright (c) 2005, Michael E. Smoot .
* All rights reserved.
*
* 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,
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*****************************************************************************/
#ifndef TCLAP_OPTIONAL_UNLABELED_TRACKER_H
#define TCLAP_OPTIONAL_UNLABELED_TRACKER_H
#include <string>
namespace TCLAP {
class OptionalUnlabeledTracker
{
public:
static void check( bool req, const std::string& argName );
static void gotOptional() { alreadyOptionalRef() = true; }
static bool& alreadyOptional() { return alreadyOptionalRef(); }
private:
static bool& alreadyOptionalRef() { static bool ct = false; return ct; }
};
inline void OptionalUnlabeledTracker::check( bool req, const std::string& argName )
{
if ( OptionalUnlabeledTracker::alreadyOptional() )
throw( SpecificationException(
"You can't specify ANY Unlabeled Arg following an optional Unlabeled Arg",
argName ) );
if ( !req )
OptionalUnlabeledTracker::gotOptional();
}
} // namespace TCLAP
#endif
TCLAP::OptionalUnlabeledTracker
Definition: OptionalUnlabeledTracker.h:34
TCLAP::OptionalUnlabeledTracker::alreadyOptional
static bool & alreadyOptional()
Definition: OptionalUnlabeledTracker.h:42
TCLAP::OptionalUnlabeledTracker::check
static void check(bool req, const std::string &argName)
Definition: OptionalUnlabeledTracker.h:50
TCLAP::OptionalUnlabeledTracker::gotOptional
static void gotOptional()
Definition: OptionalUnlabeledTracker.h:40
TCLAP::SpecificationException
Thrown from Arg and CmdLine when an Arg is improperly specified, e.g.
Definition: ArgException.h:169
TCLAP
Definition: Arg.h:48