176 lines
		
	
	
		
			5.3 KiB
		
	
	
	
		
			C++
		
	
	
		
			Executable File
		
	
	
	
	
			
		
		
	
	
			176 lines
		
	
	
		
			5.3 KiB
		
	
	
	
		
			C++
		
	
	
		
			Executable File
		
	
	
	
	
| ///////////////////////////////////////////////////////////////////////////////
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| /// \file expr.hpp
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| /// Contains definition of expr\<\> class template.
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| //
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| //  Copyright 2008 Eric Niebler. Distributed under the Boost
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| //  Software License, Version 1.0. (See accompanying file
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| //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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| 
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| #ifndef BOOST_PROTO_EXPR_HPP_EAN_04_01_2005
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| #define BOOST_PROTO_EXPR_HPP_EAN_04_01_2005
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| 
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| #include <boost/preprocessor/cat.hpp>
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| #include <boost/preprocessor/arithmetic/dec.hpp>
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| #include <boost/preprocessor/selection/max.hpp>
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| #include <boost/preprocessor/iteration/iterate.hpp>
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| #include <boost/preprocessor/facilities/intercept.hpp>
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| #include <boost/preprocessor/repetition/repeat.hpp>
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| #include <boost/preprocessor/repetition/repeat_from_to.hpp>
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| #include <boost/preprocessor/repetition/enum_trailing.hpp>
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| #include <boost/preprocessor/repetition/enum_params.hpp>
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| #include <boost/preprocessor/repetition/enum_binary_params.hpp>
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| #include <boost/preprocessor/repetition/enum_trailing_params.hpp>
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| #include <boost/preprocessor/repetition/enum_trailing_binary_params.hpp>
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| #include <boost/utility/addressof.hpp>
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| #include <boost/proto/proto_fwd.hpp>
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| #include <boost/proto/args.hpp>
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| #include <boost/proto/traits.hpp>
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| 
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| #if defined(_MSC_VER)
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| # pragma warning(push)
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| # pragma warning(disable : 4510) // default constructor could not be generated
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| # pragma warning(disable : 4512) // assignment operator could not be generated
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| # pragma warning(disable : 4610) // user defined constructor required
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| # pragma warning(disable : 4714) // function 'xxx' marked as __forceinline not inlined
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| #endif
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| 
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| namespace boost { namespace proto
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| {
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| 
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|     namespace detail
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|     {
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|         struct not_a_valid_type
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|         {
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|         private:
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|             not_a_valid_type()
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|             {}
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|         };
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|         
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|         template<typename Tag, typename Arg>
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|         struct address_of_hack
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|         {
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|             typedef not_a_valid_type type;
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|         };
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| 
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|         template<typename Expr>
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|         struct address_of_hack<proto::tag::address_of, Expr &>
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|         {
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|             typedef Expr *type;
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|         };
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| 
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|         template<typename T, typename Expr, typename Arg0>
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|         BOOST_FORCEINLINE
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|         Expr make_terminal(T &t, Expr *, proto::term<Arg0> *)
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|         {
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|             Expr that = {t};
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|             return that;
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|         }
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| 
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|         template<typename T, typename Expr, typename Arg0, std::size_t N>
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|         BOOST_FORCEINLINE
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|         Expr make_terminal(T (&t)[N], Expr *, proto::term<Arg0[N]> *)
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|         {
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|             Expr that;
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|             for(std::size_t i = 0; i < N; ++i)
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|             {
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|                 that.child0[i] = t[i];
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|             }
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|             return that;
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|         }
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| 
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|         template<typename T, typename Expr, typename Arg0, std::size_t N>
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|         BOOST_FORCEINLINE
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|         Expr make_terminal(T const(&t)[N], Expr *, proto::term<Arg0[N]> *)
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|         {
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|             Expr that;
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|             for(std::size_t i = 0; i < N; ++i)
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|             {
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|                 that.child0[i] = t[i];
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|             }
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|             return that;
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|         }
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| 
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|         // Work-around for:
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|         // https://connect.microsoft.com/VisualStudio/feedback/details/765449/codegen-stack-corruption-using-runtime-checks-when-aggregate-initializing-struct
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|     #if BOOST_WORKAROUND(BOOST_MSVC, < 1800)
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|         template<typename T, typename Expr, typename C, typename U>
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|         BOOST_FORCEINLINE
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|         Expr make_terminal(T &t, Expr *, proto::term<U C::*> *)
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|         {
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|             Expr that;
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|             that.child0 = t;
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|             return that;
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|         }
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|     #endif
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| 
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|         template<typename T, typename U>
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|         struct same_cv
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|         {
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|             typedef U type;
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|         };
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| 
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|         template<typename T, typename U>
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|         struct same_cv<T const, U>
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|         {
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|             typedef U const type;
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|         };
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|     }
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| 
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|     namespace result_of
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|     {
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|         /// \brief A helper metafunction for computing the
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|         /// return type of \c proto::expr\<\>::operator().
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|         template<typename Sig, typename This, typename Domain>
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|         struct funop;
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| 
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|         #include <boost/proto/detail/funop.hpp>
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|     }
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| 
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|     namespace exprns_
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|     {
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|         // This is where the basic_expr specializations are
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|         // actually defined:
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|         #include <boost/proto/detail/basic_expr.hpp>
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| 
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|         #if defined(__GNUC__) && __GNUC__ >= 9 || defined(__clang__) && __clang_major__ >= 10
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|             #pragma GCC diagnostic push
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|             // The warning cannot be fixed for aggregates
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|             // Sadly, GCC currently emits the warning at the use location:
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|             // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94492
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|             #pragma GCC diagnostic ignored "-Wdeprecated-copy"
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|         #endif
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| 
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|         // This is where the expr specialization are
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|         // actually defined:
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|         #include <boost/proto/detail/expr.hpp>
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| 
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|         #if defined(__GNUC__) && __GNUC__ >= 9 || defined(__clang__) && __clang_major__ >= 10
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|             #pragma GCC diagnostic pop
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|         #endif
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|     }
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| 
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|     /// \brief Lets you inherit the interface of an expression
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|     /// while hiding from Proto the fact that the type is a Proto
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|     /// expression.
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|     template<typename Expr>
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|     struct unexpr
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|       : Expr
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|     {
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|         BOOST_PROTO_UNEXPR()
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| 
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|         BOOST_FORCEINLINE
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|         explicit unexpr(Expr const &e)
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|           : Expr(e)
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|         {}
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|         
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|         using Expr::operator =;
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|     };
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| 
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| }}
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| 
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| #if defined(_MSC_VER)
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| # pragma warning(pop)
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| #endif
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| 
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| #endif // BOOST_PROTO_EXPR_HPP_EAN_04_01_2005
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