Mercurial > hg > vamp-build-and-test
diff DEPENDENCIES/generic/include/boost/spirit/home/qi/auto/meta_create.hpp @ 16:2665513ce2d3
Add boost headers
author | Chris Cannam |
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date | Tue, 05 Aug 2014 11:11:38 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DEPENDENCIES/generic/include/boost/spirit/home/qi/auto/meta_create.hpp Tue Aug 05 11:11:38 2014 +0100 @@ -0,0 +1,274 @@ +// Copyright (c) 2001-2011 Hartmut Kaiser +// +// 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_QI_META_CREATE_NOV_21_2009_0432PM) +#define BOOST_SPIRIT_QI_META_CREATE_NOV_21_2009_0432PM + +#if defined(_MSC_VER) +#pragma once +#endif + +#include <boost/spirit/home/qi/domain.hpp> +#include <boost/spirit/home/support/common_terminals.hpp> +#include <boost/spirit/home/support/auto/meta_create.hpp> + +#include <boost/utility/enable_if.hpp> +#include <boost/variant.hpp> +#include <boost/optional.hpp> +#include <boost/config.hpp> +#include <boost/mpl/and.hpp> +#include <boost/mpl/not.hpp> +#include <boost/mpl/fold.hpp> +#include <boost/mpl/vector.hpp> +#include <boost/mpl/push_back.hpp> +#include <boost/type_traits/is_same.hpp> +#include <boost/fusion/include/as_vector.hpp> + +/////////////////////////////////////////////////////////////////////////////// +namespace boost { namespace spirit { namespace qi +{ + /////////////////////////////////////////////////////////////////////////// + // compatible STL containers + template <typename Container> + struct meta_create_container + { + typedef make_unary_proto_expr< + typename Container::value_type + , proto::tag::dereference, qi::domain + > make_proto_expr; + + typedef typename make_proto_expr::type type; + + static type call() + { + return make_proto_expr::call(); + } + }; + + /////////////////////////////////////////////////////////////////////////// + // Fusion sequences + template <typename Sequence> + struct meta_create_sequence + { + // create a mpl sequence from the given fusion sequence + typedef typename mpl::fold< + typename fusion::result_of::as_vector<Sequence>::type + , mpl::vector<>, mpl::push_back<mpl::_, mpl::_> + >::type sequence_type; + + typedef make_nary_proto_expr< + sequence_type, proto::tag::shift_right, qi::domain + > make_proto_expr; + + typedef typename make_proto_expr::type type; + + static type call() + { + return make_proto_expr::call(); + } + }; + + /////////////////////////////////////////////////////////////////////////// + // the default is to use the standard streaming operator unless it's a + // STL container or a fusion sequence + + // The default implementation will be chosen if no predefined mapping of + // the data type T to a Qi component is defined. + struct no_auto_mapping_exists {}; + + template <typename T, typename Enable = void> + struct meta_create_impl : mpl::identity<no_auto_mapping_exists> {}; + + template <typename T> + struct meta_create_impl<T + , typename enable_if<mpl::and_< + traits::is_container<T>, mpl::not_<traits::is_string<T> > > + >::type> + : meta_create_container<T> {}; + + template <typename T> + struct meta_create_impl<T, typename enable_if< + spirit::detail::is_fusion_sequence_but_not_proto_expr<T> + >::type> + : meta_create_sequence<T> {}; + + template <typename T, typename Enable = void> + struct meta_create : meta_create_impl<T> {}; + + /////////////////////////////////////////////////////////////////////////// + // optional + template <typename T> + struct meta_create<boost::optional<T> > + { + typedef make_unary_proto_expr< + T, proto::tag::negate, qi::domain + > make_proto_expr; + + typedef typename make_proto_expr::type type; + + static type call() + { + return make_proto_expr::call(); + } + }; + + /////////////////////////////////////////////////////////////////////////// + // alternatives + template <BOOST_VARIANT_ENUM_PARAMS(typename T)> + struct meta_create<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> > + { + typedef make_nary_proto_expr< + typename boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)>::types + , proto::tag::bitwise_or, qi::domain + > make_proto_expr; + + typedef typename make_proto_expr::type type; + + static type call() + { + return make_proto_expr::call(); + } + }; + + /////////////////////////////////////////////////////////////////////////// + // predefined specializations for primitive components + + // character generator + template <> + struct meta_create<char> + { + typedef spirit::standard::char_type type; + static type call() { return type(); } + }; + template <> + struct meta_create<signed char> + { + typedef spirit::standard::char_type type; + static type call() { return type(); } + }; + template <> + struct meta_create<wchar_t> + { + typedef spirit::standard_wide::char_type type; + static type call() { return type(); } + }; + + template <> + struct meta_create<unsigned char> + { + typedef spirit::standard::char_type type; + static type call() { return type(); } + }; + + // boolean generator + template <> + struct meta_create<bool> + { + typedef spirit::bool_type type; + static type call() { return type(); } + }; + + // integral generators + template <> + struct meta_create<int> + { + typedef spirit::int_type type; + static type call() { return type(); } + }; + template <> + struct meta_create<short> + { + typedef spirit::short_type type; + static type call() { return type(); } + }; + template <> + struct meta_create<long> + { + typedef spirit::long_type type; + static type call() { return type(); } + }; + template <> + struct meta_create<unsigned int> + { + typedef spirit::uint_type type; + static type call() { return type(); } + }; +#if !defined(BOOST_NO_INTRINSIC_WCHAR_T) + template <> + struct meta_create<unsigned short> + { + typedef spirit::ushort_type type; + static type call() { return type(); } + }; +#endif + template <> + struct meta_create<unsigned long> + { + typedef spirit::ulong_type type; + static type call() { return type(); } + }; + +#ifdef BOOST_HAS_LONG_LONG + template <> + struct meta_create<boost::long_long_type> + { + typedef spirit::long_long_type type; + static type call() { return type(); } + }; + template <> + struct meta_create<boost::ulong_long_type> + { + typedef spirit::ulong_long_type type; + static type call() { return type(); } + }; +#endif + + // floating point generators + template <> + struct meta_create<float> + { + typedef spirit::float_type type; + static type call() { return type(); } + }; + template <> + struct meta_create<double> + { + typedef spirit::double_type type; + static type call() { return type(); } + }; + template <> + struct meta_create<long double> + { + typedef spirit::long_double_type type; + static type call() { return type(); } + }; +}}} + +/////////////////////////////////////////////////////////////////////////////// +namespace boost { namespace spirit { namespace traits +{ + /////////////////////////////////////////////////////////////////////////// + // main customization point for create_parser + template <typename T, typename Enable = void> + struct create_parser : qi::meta_create<T> {}; + + /////////////////////////////////////////////////////////////////////////// + // dispatch this to the Qi related specializations + template <typename T> + struct meta_create<qi::domain, T> + : create_parser<typename spirit::detail::remove_const_ref<T>::type> {}; + + /////////////////////////////////////////////////////////////////////////// + // Check whether a valid mapping exits for the given data type to a Qi + // component + template <typename T> + struct meta_create_exists<qi::domain, T> + : mpl::not_<is_same< + qi::no_auto_mapping_exists + , typename meta_create<qi::domain, T>::type + > > {}; +}}} + +#endif