diff DEPENDENCIES/generic/include/boost/spirit/home/qi/auto/meta_create.hpp @ 16:2665513ce2d3

Add boost headers
author Chris Cannam
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