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Diffstat (limited to '3rdParty/Boost/src/boost/spirit/home/qi/meta_compiler.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/spirit/home/qi/meta_compiler.hpp | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/spirit/home/qi/meta_compiler.hpp b/3rdParty/Boost/src/boost/spirit/home/qi/meta_compiler.hpp new file mode 100644 index 0000000..68649c0 --- /dev/null +++ b/3rdParty/Boost/src/boost/spirit/home/qi/meta_compiler.hpp @@ -0,0 +1,177 @@ +/*============================================================================= + 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) +==============================================================================*/ +#if !defined(BOOST_SPIRIT_META_COMPILER_OCTOBER_16_2008_0347PM) +#define BOOST_SPIRIT_META_COMPILER_OCTOBER_16_2008_0347PM + +#if defined(_MSC_VER) +#pragma once +#endif + +#include <boost/spirit/home/support/meta_compiler.hpp> +#include <boost/spirit/home/qi/domain.hpp> +#include <boost/spirit/home/qi/parser.hpp> +#include <boost/spirit/home/support/string_traits.hpp> +#include <boost/type_traits/remove_reference.hpp> +#include <boost/utility/enable_if.hpp> +#include <boost/fusion/include/at.hpp> + +namespace boost { namespace spirit +{ + template <typename T> + struct use_terminal<qi::domain, T + , typename enable_if<traits::is_parser<T> >::type> // enables parsers + : mpl::true_ {}; + + namespace qi + { + template <typename T, typename Modifiers, typename Enable = void> + struct make_primitive // by default, return it as-is + { + typedef T result_type; + + template <typename T_> + T_& operator()(T_& val, unused_type) const + { + return val; + } + + template <typename T_> + T_ const& operator()(T_ const& val, unused_type) const + { + return val; + } + }; + + template <typename Tag, typename Elements + , typename Modifiers, typename Enable = void> + struct make_composite; + + template <typename Directive, typename Body + , typename Modifiers, typename Enable = void> + struct make_directive + { + typedef Body result_type; + result_type operator()(unused_type, Body const& body, unused_type) const + { + return body; // By default, a directive simply returns its subject + } + }; + } + + // Qi primitive meta-compiler + template <> + struct make_component<qi::domain, proto::tag::terminal> + { + template <typename Sig> + struct result; + + template <typename This, typename Elements, typename Modifiers> + struct result<This(Elements, Modifiers)> + { + typedef typename qi::make_primitive< + typename remove_const<typename Elements::car_type>::type, + typename remove_reference<Modifiers>::type>::result_type + type; + }; + + template <typename Elements, typename Modifiers> + typename result<make_component(Elements, Modifiers)>::type + operator()(Elements const& elements, Modifiers const& modifiers) const + { + typedef typename remove_const<typename Elements::car_type>::type term; + return qi::make_primitive<term, Modifiers>()(elements.car, modifiers); + } + }; + + // Qi composite meta-compiler + template <typename Tag> + struct make_component<qi::domain, Tag> + { + template <typename Sig> + struct result; + + template <typename This, typename Elements, typename Modifiers> + struct result<This(Elements, Modifiers)> + { + typedef typename + qi::make_composite<Tag, Elements, + typename remove_reference<Modifiers>::type>::result_type + type; + }; + + template <typename Elements, typename Modifiers> + typename result<make_component(Elements, Modifiers)>::type + operator()(Elements const& elements, Modifiers const& modifiers) const + { + return qi::make_composite<Tag, Elements, Modifiers>()( + elements, modifiers); + } + }; + + // Qi function meta-compiler + template <> + struct make_component<qi::domain, proto::tag::function> + { + template <typename Sig> + struct result; + + template <typename This, typename Elements, typename Modifiers> + struct result<This(Elements, Modifiers)> + { + typedef typename + qi::make_composite< + typename remove_const<typename Elements::car_type>::type, + typename Elements::cdr_type, + typename remove_reference<Modifiers>::type + >::result_type + type; + }; + + template <typename Elements, typename Modifiers> + typename result<make_component(Elements, Modifiers)>::type + operator()(Elements const& elements, Modifiers const& modifiers) const + { + return qi::make_composite< + typename remove_const<typename Elements::car_type>::type, + typename Elements::cdr_type, + Modifiers>()(elements.cdr, modifiers); + } + }; + + // Qi directive meta-compiler + template <> + struct make_component<qi::domain, tag::directive> + { + template <typename Sig> + struct result; + + template <typename This, typename Elements, typename Modifiers> + struct result<This(Elements, Modifiers)> + { + typedef typename + qi::make_directive< + typename remove_const<typename Elements::car_type>::type, + typename remove_const<typename Elements::cdr_type::car_type>::type, + typename remove_reference<Modifiers>::type + >::result_type + type; + }; + + template <typename Elements, typename Modifiers> + typename result<make_component(Elements, Modifiers)>::type + operator()(Elements const& elements, Modifiers const& modifiers) const + { + return qi::make_directive< + typename remove_const<typename Elements::car_type>::type, + typename remove_const<typename Elements::cdr_type::car_type>::type, + Modifiers>()(elements.car, elements.cdr.car, modifiers); + } + }; + +}} + +#endif |