//          Copyright Joakim Karlsson & Kim Gräsman 2010-2012.
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE_1_0.txt or copy at
//          http://www.boost.org/LICENSE_1_0.txt)

#ifndef SNOWHOUSE_CONSTRAINTADAPTER_H
#define SNOWHOUSE_CONSTRAINTADAPTER_H

#include "../stringize.h"
#include "constraintlist.h"

namespace snowhouse
{
    template <typename ConstraintType>
    struct ConstraintAdapter
    {
        explicit ConstraintAdapter(const ConstraintType& constraint):
            m_constraint(constraint)
        {
        }

        template <typename ConstraintListType, typename ActualType>
        void Evaluate(ConstraintListType& list,
            ResultStack& result,
            OperatorStack& operators,
            const ActualType& actual)
        {
            result.push(m_constraint(actual));
            EvaluateConstraintList(list.m_tail, result, operators, actual);
        }

        ConstraintType m_constraint;
    };

    template <typename ConstraintType>
    struct Stringizer<ConstraintAdapter<ConstraintType>>
    {
        static std::string ToString(
            const ConstraintAdapter<ConstraintType>& constraintAdapter)
        {
            return snowhouse::Stringize(constraintAdapter.m_constraint);
        }
    };
}

#endif
