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Diffstat (limited to '3rdParty/Boost/src/boost/proto/transform/default.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/proto/transform/default.hpp | 598 |
1 files changed, 598 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/proto/transform/default.hpp b/3rdParty/Boost/src/boost/proto/transform/default.hpp new file mode 100644 index 0000000..cac2d6e --- /dev/null +++ b/3rdParty/Boost/src/boost/proto/transform/default.hpp @@ -0,0 +1,598 @@ +/////////////////////////////////////////////////////////////////////////////// +/// \file default.hpp +/// Contains definition of the _default transform, which gives operators their +/// usual C++ meanings and uses Boost.Typeof to deduce return types. +// +// Copyright 2008 Eric Niebler. 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_PROTO_TRANSFORM_DEFAULT_HPP_EAN_04_04_2008 +#define BOOST_PROTO_TRANSFORM_DEFAULT_HPP_EAN_04_04_2008 + +#include <boost/preprocessor/iteration/iterate.hpp> +#include <boost/preprocessor/repetition/repeat.hpp> +#include <boost/preprocessor/arithmetic/add.hpp> +#include <boost/preprocessor/arithmetic/sub.hpp> +#include <boost/preprocessor/repetition/enum.hpp> +#include <boost/preprocessor/repetition/enum_shifted.hpp> +#include <boost/preprocessor/repetition/enum_shifted_params.hpp> +#include <boost/ref.hpp> +#include <boost/get_pointer.hpp> +#include <boost/utility/enable_if.hpp> +#include <boost/type_traits/is_member_pointer.hpp> +#include <boost/type_traits/is_member_object_pointer.hpp> +#include <boost/type_traits/is_member_function_pointer.hpp> +#include <boost/proto/proto_fwd.hpp> +#include <boost/proto/traits.hpp> +#include <boost/proto/transform/impl.hpp> +#include <boost/proto/transform/arg.hpp> +#include <boost/proto/detail/decltype.hpp> + +namespace boost { namespace proto +{ + namespace detail + { + template<typename Grammar, typename Tag> + struct default_case + : not_<_> + {}; + + template<typename Grammar> + struct default_case<Grammar, tag::terminal> + : when<terminal<_>, _value> + {}; + + template<typename Grammar> + struct default_cases + { + template<typename Tag> + struct case_ + : default_case<Grammar, Tag> + {}; + }; + + #define BOOST_PROTO_UNARY_DEFAULT_EVAL(OP, TAG, MAKE) \ + template<typename Grammar> \ + struct BOOST_PP_CAT(default_, TAG) \ + : transform<BOOST_PP_CAT(default_, TAG)<Grammar> > \ + { \ + template<typename Expr, typename State, typename Data> \ + struct impl \ + : transform_impl<Expr, State, Data> \ + { \ + private: \ + typedef typename result_of::child_c<Expr, 0>::type e0; \ + typedef typename Grammar::template impl<e0, State, Data>::result_type r0; \ + public: \ + BOOST_PROTO_DECLTYPE_(OP proto::detail::MAKE<r0>(), result_type) \ + result_type operator ()( \ + typename impl::expr_param e \ + , typename impl::state_param s \ + , typename impl::data_param d \ + ) const \ + { \ + typename Grammar::template impl<e0, State, Data> t0; \ + return OP t0(proto::child_c<0>(e), s, d); \ + } \ + }; \ + }; \ + \ + template<typename Grammar> \ + struct default_case<Grammar, tag::TAG> \ + : when<unary_expr<tag::TAG, Grammar>, BOOST_PP_CAT(default_, TAG)<Grammar> > \ + {}; \ + /**/ + + #define BOOST_PROTO_BINARY_DEFAULT_EVAL(OP, TAG, LMAKE, RMAKE) \ + template<typename Grammar> \ + struct BOOST_PP_CAT(default_, TAG) \ + : transform<BOOST_PP_CAT(default_, TAG)<Grammar> > \ + { \ + template<typename Expr, typename State, typename Data> \ + struct impl \ + : transform_impl<Expr, State, Data> \ + { \ + private: \ + typedef typename result_of::child_c<Expr, 0>::type e0; \ + typedef typename result_of::child_c<Expr, 1>::type e1; \ + typedef typename Grammar::template impl<e0, State, Data>::result_type r0; \ + typedef typename Grammar::template impl<e1, State, Data>::result_type r1; \ + public: \ + BOOST_PROTO_DECLTYPE_( \ + proto::detail::LMAKE<r0>() OP proto::detail::RMAKE<r1>() \ + , result_type \ + ) \ + result_type operator ()( \ + typename impl::expr_param e \ + , typename impl::state_param s \ + , typename impl::data_param d \ + ) const \ + { \ + typename Grammar::template impl<e0, State, Data> t0; \ + typename Grammar::template impl<e1, State, Data> t1; \ + return t0(proto::child_c<0>(e), s, d) \ + OP t1(proto::child_c<1>(e), s, d); \ + } \ + }; \ + }; \ + \ + template<typename Grammar> \ + struct default_case<Grammar, tag::TAG> \ + : when<binary_expr<tag::TAG, Grammar, Grammar>, BOOST_PP_CAT(default_, TAG)<Grammar> > \ + {}; \ + /**/ + + BOOST_PROTO_UNARY_DEFAULT_EVAL(+, unary_plus, make) + BOOST_PROTO_UNARY_DEFAULT_EVAL(-, negate, make) + BOOST_PROTO_UNARY_DEFAULT_EVAL(*, dereference, make) + BOOST_PROTO_UNARY_DEFAULT_EVAL(~, complement, make) + BOOST_PROTO_UNARY_DEFAULT_EVAL(&, address_of, make) + BOOST_PROTO_UNARY_DEFAULT_EVAL(!, logical_not, make) + BOOST_PROTO_UNARY_DEFAULT_EVAL(++, pre_inc, make_mutable) + BOOST_PROTO_UNARY_DEFAULT_EVAL(--, pre_dec, make_mutable) + + BOOST_PROTO_BINARY_DEFAULT_EVAL(<<, shift_left, make_mutable, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(>>, shift_right, make_mutable, make_mutable) + BOOST_PROTO_BINARY_DEFAULT_EVAL(*, multiplies, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(/, divides, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(%, modulus, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(+, plus, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(-, minus, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(<, less, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(>, greater, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(<=, less_equal, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(>=, greater_equal, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(==, equal_to, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(!=, not_equal_to, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(||, logical_or, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(&&, logical_and, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(&, bitwise_and, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(|, bitwise_or, make, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(^, bitwise_xor, make, make) + + BOOST_PROTO_BINARY_DEFAULT_EVAL(=, assign, make_mutable, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(<<=, shift_left_assign, make_mutable, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(>>=, shift_right_assign, make_mutable, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(*=, multiplies_assign, make_mutable, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(/=, divides_assign, make_mutable, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(%=, modulus_assign, make_mutable, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(+=, plus_assign, make_mutable, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(-=, minus_assign, make_mutable, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(&=, bitwise_and_assign, make_mutable, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(|=, bitwise_or_assign, make_mutable, make) + BOOST_PROTO_BINARY_DEFAULT_EVAL(^=, bitwise_xor_assign, make_mutable, make) + + #undef BOOST_PROTO_UNARY_DEFAULT_EVAL + #undef BOOST_PROTO_BINARY_DEFAULT_EVAL + + /// INTERNAL ONLY + template<typename Grammar, typename Expr, typename State, typename Data> + struct is_member_function_invocation + : is_member_function_pointer< + typename uncvref< + typename Grammar::template impl< + typename result_of::child_c<Expr, 1>::type + , State + , Data + >::result_type + >::type + > + {}; + + /// INTERNAL ONLY + template<typename Grammar, typename Expr, typename State, typename Data, bool IsMemFunCall> + struct default_mem_ptr_impl + : transform_impl<Expr, State, Data> + { + private: + typedef typename result_of::child_c<Expr, 0>::type e0; + typedef typename result_of::child_c<Expr, 1>::type e1; + typedef typename Grammar::template impl<e0, State, Data>::result_type r0; + typedef typename Grammar::template impl<e1, State, Data>::result_type r1; + public: + typedef typename detail::mem_ptr_fun<r0, r1>::result_type result_type; + result_type operator ()( + typename default_mem_ptr_impl::expr_param e + , typename default_mem_ptr_impl::state_param s + , typename default_mem_ptr_impl::data_param d + ) const + { + typename Grammar::template impl<e0, State, Data> t0; + typename Grammar::template impl<e1, State, Data> t1; + return detail::mem_ptr_fun<r0, r1>()( + t0(proto::child_c<0>(e), s, d) + , t1(proto::child_c<1>(e), s, d) + ); + } + }; + + /// INTERNAL ONLY + template<typename Grammar, typename Expr, typename State, typename Data> + struct default_mem_ptr_impl<Grammar, Expr, State, Data, true> + : transform_impl<Expr, State, Data> + { + private: + typedef typename result_of::child_c<Expr, 0>::type e0; + typedef typename result_of::child_c<Expr, 1>::type e1; + typedef typename Grammar::template impl<e0, State, Data>::result_type r0; + typedef typename Grammar::template impl<e1, State, Data>::result_type r1; + public: + typedef detail::memfun<r0, r1> result_type; + result_type const operator ()( + typename default_mem_ptr_impl::expr_param e + , typename default_mem_ptr_impl::state_param s + , typename default_mem_ptr_impl::data_param d + ) const + { + typename Grammar::template impl<e0, State, Data> t0; + typename Grammar::template impl<e1, State, Data> t1; + return detail::memfun<r0, r1>( + t0(proto::child_c<0>(e), s, d) + , t1(proto::child_c<1>(e), s, d) + ); + } + }; + + template<typename Grammar> + struct default_mem_ptr + : transform<default_mem_ptr<Grammar> > + { + template<typename Expr, typename State, typename Data> + struct impl + : default_mem_ptr_impl< + Grammar + , Expr + , State + , Data + , is_member_function_invocation<Grammar, Expr, State, Data>::value + > + {}; + }; + + template<typename Grammar> + struct default_case<Grammar, tag::mem_ptr> + : when<mem_ptr<Grammar, Grammar>, default_mem_ptr<Grammar> > + {}; + + template<typename Grammar> + struct default_post_inc + : transform<default_post_inc<Grammar> > + { + template<typename Expr, typename State, typename Data> + struct impl + : transform_impl<Expr, State, Data> + { + private: + typedef typename result_of::child_c<Expr, 0>::type e0; + typedef typename Grammar::template impl<e0, State, Data>::result_type r0; + public: + BOOST_PROTO_DECLTYPE_(proto::detail::make_mutable<r0>() ++, result_type) + result_type operator ()( + typename impl::expr_param e + , typename impl::state_param s + , typename impl::data_param d + ) const + { + typename Grammar::template impl<e0, State, Data> t0; + return t0(proto::child_c<0>(e), s, d) ++; + } + }; + }; + + template<typename Grammar> + struct default_case<Grammar, tag::post_inc> + : when<post_inc<Grammar>, default_post_inc<Grammar> > + {}; + + template<typename Grammar> + struct default_post_dec + : transform<default_post_dec<Grammar> > + { + template<typename Expr, typename State, typename Data> + struct impl + : transform_impl<Expr, State, Data> + { + private: + typedef typename result_of::child_c<Expr, 0>::type e0; + typedef typename Grammar::template impl<e0, State, Data>::result_type r0; + public: + BOOST_PROTO_DECLTYPE_(proto::detail::make_mutable<r0>() --, result_type) + result_type operator ()( + typename impl::expr_param e + , typename impl::state_param s + , typename impl::data_param d + ) const + { + typename Grammar::template impl<e0, State, Data> t0; + return t0(proto::child_c<0>(e), s, d) --; + } + }; + }; + + template<typename Grammar> + struct default_case<Grammar, tag::post_dec> + : when<post_dec<Grammar>, default_post_dec<Grammar> > + {}; + + template<typename Grammar> + struct default_subscript + : transform<default_subscript<Grammar> > + { + template<typename Expr, typename State, typename Data> + struct impl + : transform_impl<Expr, State, Data> + { + private: + typedef typename result_of::child_c<Expr, 0>::type e0; + typedef typename result_of::child_c<Expr, 1>::type e1; + typedef typename Grammar::template impl<e0, State, Data>::result_type r0; + typedef typename Grammar::template impl<e1, State, Data>::result_type r1; + public: + BOOST_PROTO_DECLTYPE_( + proto::detail::make_subscriptable<r0>() [ proto::detail::make<r1>() ] + , result_type + ) + result_type operator ()( + typename impl::expr_param e + , typename impl::state_param s + , typename impl::data_param d + ) const + { + typename Grammar::template impl<e0, State, Data> t0; + typename Grammar::template impl<e1, State, Data> t1; + return t0(proto::child_c<0>(e), s, d) [ + t1(proto::child_c<1>(e), s, d) ]; + } + }; + }; + + template<typename Grammar> + struct default_case<Grammar, tag::subscript> + : when<subscript<Grammar, Grammar>, default_subscript<Grammar> > + {}; + + template<typename Grammar> + struct default_if_else_ + { + template<typename Expr, typename State, typename Data> + struct impl + : transform_impl<Expr, State, Data> + { + private: + typedef typename result_of::child_c<Expr, 0>::type e0; + typedef typename result_of::child_c<Expr, 1>::type e1; + typedef typename result_of::child_c<Expr, 2>::type e2; + typedef typename Grammar::template impl<e0, State, Data>::result_type r0; + typedef typename Grammar::template impl<e1, State, Data>::result_type r1; + typedef typename Grammar::template impl<e2, State, Data>::result_type r2; + public: + BOOST_PROTO_DECLTYPE_( + proto::detail::make<r0>() + ? proto::detail::make<r1>() + : proto::detail::make<r2>() + , result_type + ) + result_type operator ()( + typename impl::expr_param e + , typename impl::state_param s + , typename impl::data_param d + ) const + { + typename Grammar::template impl<e0, State, Data> t0; + typename Grammar::template impl<e1, State, Data> t1; + typename Grammar::template impl<e2, State, Data> t2; + return t0(proto::child_c<0>(e), s, d) + ? t1(proto::child_c<1>(e), s, d) + : t2(proto::child_c<2>(e), s, d); + } + }; + }; + + template<typename Grammar> + struct default_case<Grammar, tag::if_else_> + : when<if_else_<Grammar, Grammar, Grammar>, default_if_else_<Grammar> > + {}; + + template<typename Grammar> + struct default_comma + : transform<default_comma<Grammar> > + { + template<typename Expr, typename State, typename Data> + struct impl + : transform_impl<Expr, State, Data> + { + private: + typedef typename result_of::child_c<Expr, 0>::type e0; + typedef typename result_of::child_c<Expr, 1>::type e1; + typedef typename Grammar::template impl<e0, State, Data>::result_type r0; + typedef typename Grammar::template impl<e1, State, Data>::result_type r1; + public: + typedef typename proto::detail::comma_result<r0, r1>::type result_type; + result_type operator ()( + typename impl::expr_param e + , typename impl::state_param s + , typename impl::data_param d + ) const + { + typename Grammar::template impl<e0, State, Data> t0; + typename Grammar::template impl<e1, State, Data> t1; + return t0(proto::child_c<0>(e), s, d) + , t1(proto::child_c<1>(e), s, d); + } + }; + }; + + template<typename Grammar> + struct default_case<Grammar, tag::comma> + : when<comma<Grammar, Grammar>, default_comma<Grammar> > + {}; + + template<typename Grammar, typename Expr, typename State, typename Data, long Arity> + struct default_function_impl; + + template<typename Grammar> + struct default_function + : transform<default_function<Grammar> > + { + template<typename Expr, typename State, typename Data> + struct impl + : default_function_impl< + Grammar + , Expr + , State + , Data + , transform_impl<Expr, State, Data>::expr::proto_arity_c + > + {}; + }; + + template<typename Grammar> + struct default_case<Grammar, tag::function> + : when<function<Grammar, vararg<Grammar> >, default_function<Grammar> > + {}; + + #define BOOST_PROTO_DEFAULT_EVAL_TYPE(Z, N, DATA) \ + typedef \ + typename result_of::child_c<DATA, N>::type \ + BOOST_PP_CAT(e, N); \ + \ + typedef \ + typename Grammar::template impl<BOOST_PP_CAT(e, N), State, Data>::result_type \ + BOOST_PP_CAT(r, N); \ + /**/ + + #define BOOST_PROTO_DEFAULT_EVAL(Z, N, DATA) \ + typename Grammar::template impl<BOOST_PP_CAT(e, N), State, Data>()( \ + proto::child_c<N>(DATA), s, d \ + ) \ + /**/ + + template<typename Grammar, typename Expr, typename State, typename Data> + struct default_function_impl<Grammar, Expr, State, Data, 1> + : transform_impl<Expr, State, Data> + { + BOOST_PROTO_DEFAULT_EVAL_TYPE(~, 0, Expr) + + typedef + typename proto::detail::result_of_fixup<r0>::type + function_type; + + typedef + typename BOOST_PROTO_RESULT_OF<function_type()>::type + result_type; + + result_type operator ()( + typename default_function_impl::expr_param e + , typename default_function_impl::state_param s + , typename default_function_impl::data_param d + ) const + { + return BOOST_PROTO_DEFAULT_EVAL(~, 0, e)(); + } + }; + + template<typename Grammar, typename Expr, typename State, typename Data> + struct default_function_impl<Grammar, Expr, State, Data, 2> + : transform_impl<Expr, State, Data> + { + BOOST_PROTO_DEFAULT_EVAL_TYPE(~, 0, Expr) + BOOST_PROTO_DEFAULT_EVAL_TYPE(~, 1, Expr) + + typedef + typename proto::detail::result_of_fixup<r0>::type + function_type; + + typedef + typename detail::result_of_<function_type(r1)>::type + result_type; + + result_type operator ()( + typename default_function_impl::expr_param e + , typename default_function_impl::state_param s + , typename default_function_impl::data_param d + ) const + { + return this->invoke( + e + , s + , d + , is_member_function_pointer<function_type>() + , is_member_object_pointer<function_type>() + ); + } + + private: + result_type invoke( + typename default_function_impl::expr_param e + , typename default_function_impl::state_param s + , typename default_function_impl::data_param d + , mpl::false_ + , mpl::false_ + ) const + { + return BOOST_PROTO_DEFAULT_EVAL(~, 0, e)(BOOST_PROTO_DEFAULT_EVAL(~, 1, e)); + } + + result_type invoke( + typename default_function_impl::expr_param e + , typename default_function_impl::state_param s + , typename default_function_impl::data_param d + , mpl::true_ + , mpl::false_ + ) const + { + BOOST_PROTO_USE_GET_POINTER(); + typedef typename detail::class_member_traits<function_type>::class_type class_type; + return ( + BOOST_PROTO_GET_POINTER(class_type, (BOOST_PROTO_DEFAULT_EVAL(~, 1, e))) ->* + BOOST_PROTO_DEFAULT_EVAL(~, 0, e) + )(); + } + + result_type invoke( + typename default_function_impl::expr_param e + , typename default_function_impl::state_param s + , typename default_function_impl::data_param d + , mpl::false_ + , mpl::true_ + ) const + { + BOOST_PROTO_USE_GET_POINTER(); + typedef typename detail::class_member_traits<function_type>::class_type class_type; + return ( + BOOST_PROTO_GET_POINTER(class_type, (BOOST_PROTO_DEFAULT_EVAL(~, 1, e))) ->* + BOOST_PROTO_DEFAULT_EVAL(~, 0, e) + ); + } + }; + + #include <boost/proto/transform/detail/default_function_impl.hpp> + + #undef BOOST_PROTO_DEFAULT_EVAL_TYPE + #undef BOOST_PROTO_DEFAULT_EVAL + } + + template<typename Grammar /*= detail::_default*/> + struct _default + : switch_<detail::default_cases<Grammar> > + {}; + + template<typename Grammar> + struct is_callable<_default<Grammar> > + : mpl::true_ + {}; + + namespace detail + { + // Loopy indirection that allows proto::_default<> to be + // used without specifying a Grammar argument. + struct _default + : proto::_default<> + {}; + } + +}} + +#endif + |