//          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_FULFILLSCONSTRAINT_H
#define SNOWHOUSE_FULFILLSCONSTRAINT_H

#include "expressions/expression.h"

namespace snowhouse
{
    template <typename MatcherType>
    struct FulfillsConstraint : Expression<FulfillsConstraint<MatcherType>>
    {
        FulfillsConstraint(const MatcherType& matcher): m_matcher(matcher) {}

        template <typename ActualType>
        bool operator()(const ActualType& actual) const
        {
            return m_matcher.Matches(actual);
        }

        MatcherType m_matcher;
    };

    template <typename MatcherType>
    inline FulfillsConstraint<MatcherType> Fulfills(const MatcherType& matcher)
    {
        return FulfillsConstraint<MatcherType>(matcher);
    }

    template <typename MatcherType>
    struct Stringizer<FulfillsConstraint<MatcherType>>
    {
        static std::string ToString(
            const FulfillsConstraint<MatcherType>& constraint)
        {
            std::ostringstream builder;
            builder << snowhouse::Stringize(constraint.m_matcher);

            return builder.str();
        }
    };
}

#endif
