/usr/include/boost/spirit/home/karma/detail
Edit: /usr/include/boost/spirit/home/karma/detail/attributes.hpp (2737B)
// Copyright (c) 2001-2011 Hartmut Kaiser
// Copyright (c) 2001-2011 Joel de Guzman
//
// 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 BOOST_SPIRIT_KARMA_DETAIL_ATTRIBUTES_HPP
#define BOOST_SPIRIT_KARMA_DETAIL_ATTRIBUTES_HPP
#include
#include
#include
///////////////////////////////////////////////////////////////////////////////
namespace boost { namespace spirit { namespace karma
{
template
struct transform_attribute
{
typedef Transformed type;
static Transformed pre(Exposed& val)
{
return Transformed(traits::extract_from(val, unused));
}
// Karma only, no post() and no fail() required
};
template
struct transform_attribute const, Transformed
, typename disable_if, Transformed> >::type>
{
typedef Transformed const& type;
static Transformed const& pre(boost::optional const& val)
{
return boost::get(val);
}
};
template
struct transform_attribute
{
typedef Attribute const& type;
static Attribute const& pre(Attribute const& val) { return val; }
// Karma only, no post() and no fail() required
};
// unused_type needs some special handling as well
template <>
struct transform_attribute
{
typedef unused_type type;
static unused_type pre(unused_type) { return unused; }
};
template <>
struct transform_attribute
: transform_attribute
{};
template
struct transform_attribute
: transform_attribute
{};
template
struct transform_attribute
: transform_attribute
{};
}}}
///////////////////////////////////////////////////////////////////////////////
namespace boost { namespace spirit { namespace traits { namespace detail
{
template
struct transform_attribute_base
: karma::transform_attribute
{};
}}}}
#endif