// -*- 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,
|
* 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_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
|
