FM / lambda

/usr/include/boost/compute/lambda

Name	Size	Mode	Actions
context.hpp	10915	0644	edit dl rm
functional.hpp	25023	0644	edit dl rm
get.hpp	4225	0644	edit dl rm
make_pair.hpp	2232	0644	edit dl rm
make_tuple.hpp	4914	0644	edit dl rm
placeholder.hpp	788	0644	edit dl rm
placeholders.hpp	2496	0644	edit dl rm
result_of.hpp	4119	0644	edit dl rm

Edit: /usr/include/boost/compute/lambda/placeholders.hpp (2496B)

//---------------------------------------------------------------------------//
// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
//
// 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
//
// See http://boostorg.github.com/compute for more information.
//---------------------------------------------------------------------------//

#ifndef BOOST_COMPUTE_LAMBDA_PLACEHOLDERS_HPP
#define BOOST_COMPUTE_LAMBDA_PLACEHOLDERS_HPP

#include <boost/mpl/has_xxx.hpp>

#include <boost/compute/lambda/context.hpp>
#include <boost/compute/lambda/result_of.hpp>

namespace boost {
namespace compute {
namespace lambda {

namespace mpl = boost::mpl;
namespace proto = boost::proto;

// lambda placeholders
expression<proto::terminal<placeholder<0> >::type> const _1;
expression<proto::terminal<placeholder<1> >::type> const _2;
expression<proto::terminal<placeholder<2> >::type> const _3;

namespace detail {

BOOST_MPL_HAS_XXX_TRAIT_DEF(result_type)

template<class T, bool HasResultType>
struct terminal_type_impl;

template<class T>
struct terminal_type_impl<T, true>
{
    typedef typename T::result_type type;
};

template<class T>
struct terminal_type_impl<T, false>
{
    typedef T type;
};

template<class T>
struct terminal_type
{
    typedef typename terminal_type_impl<T, has_result_type<T>::value>::type type;
};

} // end detail namespace

// result_of placeholders
template<class Args>
struct result_of<expression<proto::terminal<placeholder<0> >::type>, Args, proto::tag::terminal>
{
    typedef typename boost::tuples::element<0, Args>::type arg_type;

typedef typename detail::terminal_type<arg_type>::type type;
};

template<class Args>
struct result_of<expression<proto::terminal<placeholder<1> >::type>, Args, proto::tag::terminal>
{
    typedef typename boost::tuples::element<1, Args>::type arg_type;

typedef typename detail::terminal_type<arg_type>::type type;
};

template<class Args>
struct result_of<expression<proto::terminal<placeholder<2> >::type>, Args, proto::tag::terminal>
{
    typedef typename boost::tuples::element<2, Args>::type arg_type;

typedef typename detail::terminal_type<arg_type>::type type;
};

} // end lambda namespace

// lift lambda placeholders up to the boost::compute namespace
using lambda::_1;
using lambda::_2;
using lambda::_3;

} // end compute namespace
} // end boost namespace

#endif // BOOST_COMPUTE_LAMBDA_PLACEHOLDERS_HPP

//---------------------------------------------------------------------------// // Copyright (c) 2013 Kyle Lutz // // 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 // // See http://boostorg.github.com/compute for more information. //---------------------------------------------------------------------------// #ifndef BOOST_COMPUTE_LAMBDA_PLACEHOLDERS_HPP #define BOOST_COMPUTE_LAMBDA_PLACEHOLDERS_HPP #include #include #include namespace boost { namespace compute { namespace lambda { namespace mpl = boost::mpl; namespace proto = boost::proto; // lambda placeholders expression >::type> const _1; expression >::type> const _2; expression >::type> const _3; namespace detail { BOOST_MPL_HAS_XXX_TRAIT_DEF(result_type) template struct terminal_type_impl; template struct terminal_type_impl { typedef typename T::result_type type; }; template struct terminal_type_impl { typedef T type; }; template struct terminal_type { typedef typename terminal_type_impl::value>::type type; }; } // end detail namespace // result_of placeholders template struct result_of >::type>, Args, proto::tag::terminal> { typedef typename boost::tuples::element<0, Args>::type arg_type; typedef typename detail::terminal_type::type type; }; template struct result_of >::type>, Args, proto::tag::terminal> { typedef typename boost::tuples::element<1, Args>::type arg_type; typedef typename detail::terminal_type::type type; }; template struct result_of >::type>, Args, proto::tag::terminal> { typedef typename boost::tuples::element<2, Args>::type arg_type; typedef typename detail::terminal_type::type type; }; } // end lambda namespace // lift lambda placeholders up to the boost::compute namespace using lambda::_1; using lambda::_2; using lambda::_3; } // end compute namespace } // end boost namespace #endif // BOOST_COMPUTE_LAMBDA_PLACEHOLDERS_HPP