| #ifndef BOOST_PP_IS_ITERATING | |
| /////////////////////////////////////////////////////////////////////////////// | |
| /// \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::classtypeof<function_type>::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::classtypeof<function_type>::type class_type; | |
| return ( | |
| BOOST_PROTO_GET_POINTER(class_type, BOOST_PROTO_DEFAULT_EVAL(~, 1, e)) ->* | |
| BOOST_PROTO_DEFAULT_EVAL(~, 0, e) | |
| ); | |
| } | |
| }; | |
| #define BOOST_PP_ITERATION_PARAMS_1 (3, (3, BOOST_PROTO_MAX_ARITY, <boost/proto/transform/default.hpp>)) | |
| #include BOOST_PP_ITERATE() | |
| #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 | |
| #else | |
| #define N BOOST_PP_ITERATION() | |
| template<typename Grammar, typename Expr, typename State, typename Data> | |
| struct default_function_impl<Grammar, Expr, State, Data, N> | |
| : transform_impl<Expr, State, Data> | |
| { | |
| BOOST_PP_REPEAT(N, BOOST_PROTO_DEFAULT_EVAL_TYPE, Expr) | |
| typedef | |
| typename proto::detail::result_of_fixup<r0>::type | |
| function_type; | |
| typedef | |
| typename BOOST_PROTO_RESULT_OF< | |
| function_type(BOOST_PP_ENUM_SHIFTED_PARAMS(N, r)) | |
| >::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>()); | |
| } | |
| 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_ | |
| ) const | |
| { | |
| return BOOST_PROTO_DEFAULT_EVAL(~, 0, e)( | |
| BOOST_PP_ENUM_SHIFTED(N, BOOST_PROTO_DEFAULT_EVAL, 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_ | |
| ) const | |
| { | |
| #define M0(Z, M, DATA) BOOST_PROTO_DEFAULT_EVAL(Z, BOOST_PP_ADD(M, 2), DATA) | |
| BOOST_PROTO_USE_GET_POINTER(); | |
| typedef typename detail::classtypeof<function_type>::type class_type; | |
| return ( | |
| BOOST_PROTO_GET_POINTER(class_type, BOOST_PROTO_DEFAULT_EVAL(~, 1, e)) ->* | |
| BOOST_PROTO_DEFAULT_EVAL(~, 0, e) | |
| )(BOOST_PP_ENUM(BOOST_PP_SUB(N, 2), M0, e)); | |
| #undef M0 | |
| } | |
| }; | |
| #undef N | |
| #endif |