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// -*- Mode: c++; c-basic-offset: 4; tab-width: 4; -*-
/******************************************************************************
*
* file: ValuesConstraint.h
*
* Copyright (c) 2005, Michael E. Smoot
* Copyright (c) 2017, Google LLC
* 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_VALUESCONSTRAINT_H
#define TCLAP_VALUESCONSTRAINT_H
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string>
#include <vector>
#include <tclap/Constraint.h>
#include <tclap/sstream.h>
namespace TCLAP {
/**
* A Constraint that constrains the Arg to only those values specified
* in the constraint.
*/
template<class T>
class ValuesConstraint : public Constraint<T>
{
public:
/**
* Constructor.
* \param allowed - vector of allowed values.
*/
ValuesConstraint(std::vector<T>const& allowed);
/**
* Virtual destructor.
*/
virtual ~ValuesConstraint() {}
/**
* Returns a description of the Constraint.
*/
virtual std::string description() const;
/**
* Returns the short ID for the Constraint.
*/
virtual std::string shortID() const;
/**
* The method used to verify that the value parsed from the command
* line meets the constraint.
* \param value - The value that will be checked.
*/
virtual bool check(const T& value) const;
protected:
/**
* The list of valid values.
*/
std::vector<T> _allowed;
/**
* The string used to describe the allowed values of this constraint.
*/
std::string _typeDesc;
};
template<class T>
ValuesConstraint<T>::ValuesConstraint(std::vector<T> const& allowed)
: _allowed(allowed),
_typeDesc("")
{
for ( unsigned int i = 0; i < _allowed.size(); i++ )
{
std::ostringstream os;
os << _allowed[i];
std::string temp( os.str() );
if ( i > 0 )
_typeDesc += "|";
_typeDesc += temp;
}
}
template<class T>
bool ValuesConstraint<T>::check( const T& val ) const
{
if ( std::find(_allowed.begin(),_allowed.end(),val) == _allowed.end() )
return false;
else
return true;
}
template<class T>
std::string ValuesConstraint<T>::shortID() const
{
return _typeDesc;
}
template<class T>
std::string ValuesConstraint<T>::description() const
{
return _typeDesc;
}
} //namespace TCLAP
#endif
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