values_constraint.hpp

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/*****************************************************************************
** Ifdefs
*****************************************************************************/
 
#ifndef TCLAP_VALUESCONSTRAINT_H
#define TCLAP_VALUESCONSTRAINT_H
 
#include <string>
#include <vector>
#include "constraint.hpp"
 
#define HAVE_SSTREAM
 
#if defined(HAVE_SSTREAM)
#include <sstream>
#elif defined(HAVE_STRSTREAM)
#include <strstream>
#else
#error "Need a stringstream (sstream or strstream) to compile!"
#endif
 
namespace ecl {
 
template<class T>
class ValuesConstraint : public Constraint<T>
{
 
        public:
 
                ValuesConstraint(std::vector<T>& allowed);
 
                virtual ~ValuesConstraint() {}
 
                virtual std::string description() const;
 
                virtual std::string shortID() const;
 
                virtual bool check(const T& value) const;
 
        protected:
 
                std::vector<T> _allowed;
 
                std::string _typeDesc;
 
};
 
template<class T>
ValuesConstraint<T>::ValuesConstraint(std::vector<T>& allowed)
: _allowed(allowed)
{
    for ( unsigned int i = 0; i < _allowed.size(); i++ )
    {
 
#if defined(HAVE_SSTREAM)
        std::ostringstream os;
#elif defined(HAVE_STRSTREAM)
        std::ostrstream os;
#else
#error "Need a stringstream (sstream or strstream) to compile!"
#endif
 
        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 ecl
 
#endif