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///////////////////////////////////////////////////////////////////////////////
/// \file operators.hpp
/// Contains all the overloaded operators that make it possible to build
/// Proto expression trees.
//
// 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_OPERATORS_HPP_EAN_04_01_2005
#define BOOST_PROTO_OPERATORS_HPP_EAN_04_01_2005
#include <boost/config.hpp>
#include <boost/preprocessor/punctuation/comma.hpp>
#include <boost/mpl/logical.hpp>
#include <boost/utility/enable_if.hpp>
#include <boost/proto/proto_fwd.hpp>
#include <boost/proto/tags.hpp>
#include <boost/proto/domain.hpp>
#include <boost/proto/matches.hpp>
#include <boost/proto/generate.hpp>
#include <boost/proto/make_expr.hpp>
#if defined(_MSC_VER)
# pragma warning(push)
# pragma warning(disable : 4714) // function 'xxx' marked as __forceinline not inlined
#endif
namespace boost { namespace proto
{
namespace detail
{
template<typename MakeExpr, typename Grammar>
struct lazy_matches
: proto::matches<typename MakeExpr::type, Grammar>
{};
template<typename Domain, typename Grammar, typename Trait, typename Tag, typename Arg>
struct enable_unary
: boost::lazy_enable_if_c<
boost::mpl::and_<
Trait
, lazy_matches<result_of::make_expr<Tag, basic_default_domain, Arg>, Grammar>
>::value
, result_of::make_expr<Tag, Domain, Arg>
>
{};
template<typename Domain, typename Trait, typename Tag, typename Arg>
struct enable_unary<Domain, proto::_, Trait, Tag, Arg &>
: boost::lazy_enable_if_c<
Trait::value
, result_of::make_expr<Tag, Domain, Arg &>
>
{};
template<typename Trait, typename Tag, typename Arg>
struct enable_unary<deduce_domain, not_a_grammar, Trait, Tag, Arg &>
: enable_unary<
typename domain_of<Arg>::type
, typename domain_of<Arg>::type::proto_grammar
, Trait
, Tag
, Arg &
>
{};
template<typename Domain, typename Grammar, typename Trait, typename Tag, typename Left, typename Right>
struct enable_binary
: boost::lazy_enable_if_c<
boost::mpl::and_<
Trait
, lazy_matches<result_of::make_expr<Tag, basic_default_domain, Left, Right>, Grammar>
>::value
, result_of::make_expr<Tag, Domain, Left, Right>
>
{};
template<typename Domain, typename Trait, typename Tag, typename Left, typename Right>
struct enable_binary<Domain, proto::_, Trait, Tag, Left &, Right &>
: boost::lazy_enable_if_c<
Trait::value
, result_of::make_expr<Tag, Domain, Left &, Right &>
>
{};
template<typename Trait, typename Tag, typename Left, typename Right>
struct enable_binary<deduce_domain, not_a_grammar, Trait, Tag, Left &, Right &>
: enable_binary<
typename deduce_domain2<Left, Right>::type
, typename deduce_domain2<Left, Right>::type::proto_grammar
, Trait
, Tag
, Left &
, Right &
>
{};
} // detail
#define BOOST_PROTO_UNARY_OP_IS_POSTFIX_0
#define BOOST_PROTO_UNARY_OP_IS_POSTFIX_1 , int
#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
#define BOOST_PROTO_DEFINE_UNARY_OPERATOR(OP, TAG, TRAIT, DOMAIN, POST) \
template<typename Arg> \
BOOST_PROTO_DISABLE_MSVC_C4714 BOOST_FORCEINLINE \
typename boost::proto::detail::enable_unary< \
DOMAIN \
, DOMAIN::proto_grammar \
, BOOST_PROTO_APPLY_UNARY_(TRAIT, Arg) \
, TAG \
, Arg & \
>::type const \
operator OP(Arg &arg BOOST_PROTO_UNARY_OP_IS_POSTFIX_ ## POST) \
{ \
return boost::proto::detail::make_expr_<TAG, DOMAIN, Arg &>()(arg); \
} \
\
template<typename Arg> \
BOOST_PROTO_DISABLE_MSVC_C4714 BOOST_FORCEINLINE \
typename boost::proto::detail::enable_unary< \
DOMAIN \
, DOMAIN::proto_grammar \
, BOOST_PROTO_APPLY_UNARY_(TRAIT, Arg) \
, TAG \
, Arg const & \
>::type const \
operator OP(Arg const &arg BOOST_PROTO_UNARY_OP_IS_POSTFIX_ ## POST) \
{ \
return boost::proto::detail::make_expr_<TAG, DOMAIN, Arg const &>()(arg); \
} \
/**/
#define BOOST_PROTO_DEFINE_BINARY_OPERATOR(OP, TAG, TRAIT, DOMAIN) \
template<typename Left, typename Right> \
BOOST_PROTO_DISABLE_MSVC_C4714 BOOST_FORCEINLINE \
typename boost::proto::detail::enable_binary< \
DOMAIN \
, DOMAIN::proto_grammar \
, BOOST_PROTO_APPLY_BINARY_(TRAIT, Left, Right) \
, TAG \
, Left & \
, Right & \
>::type const \
operator OP(Left &left, Right &right) \
{ \
return boost::proto::detail::make_expr_<TAG, DOMAIN, Left &, Right &>()(left, right); \
} \
\
template<typename Left, typename Right> \
BOOST_PROTO_DISABLE_MSVC_C4714 BOOST_FORCEINLINE \
typename boost::proto::detail::enable_binary< \
DOMAIN \
, DOMAIN::proto_grammar \
, BOOST_PROTO_APPLY_BINARY_(TRAIT, Left, Right) \
, TAG \
, Left & \
, Right const & \
>::type const \
operator OP(Left &left, Right const &right) \
{ \
return boost::proto::detail::make_expr_<TAG, DOMAIN, Left &, Right const &>()(left, right); \
} \
\
template<typename Left, typename Right> \
BOOST_PROTO_DISABLE_MSVC_C4714 BOOST_FORCEINLINE \
typename boost::proto::detail::enable_binary< \
DOMAIN \
, DOMAIN::proto_grammar \
, BOOST_PROTO_APPLY_BINARY_(TRAIT, Left, Right) \
, TAG \
, Left const & \
, Right & \
>::type const \
operator OP(Left const &left, Right &right) \
{ \
return boost::proto::detail::make_expr_<TAG, DOMAIN, Left const &, Right &>()(left, right); \
} \
\
template<typename Left, typename Right> \
BOOST_PROTO_DISABLE_MSVC_C4714 BOOST_FORCEINLINE \
typename boost::proto::detail::enable_binary< \
DOMAIN \
, DOMAIN::proto_grammar \
, BOOST_PROTO_APPLY_BINARY_(TRAIT, Left, Right) \
, TAG \
, Left const & \
, Right const & \
>::type const \
operator OP(Left const &left, Right const &right) \
{ \
return boost::proto::detail::make_expr_<TAG, DOMAIN, Left const &, Right const &>()(left, right);\
} \
/**/
#else
#define BOOST_PROTO_DEFINE_UNARY_OPERATOR(OP, TAG, TRAIT, DOMAIN, POST) \
template<typename Arg> \
BOOST_PROTO_DISABLE_MSVC_C4714 BOOST_FORCEINLINE \
typename boost::proto::detail::enable_unary< \
DOMAIN \
, DOMAIN::proto_grammar \
, BOOST_PROTO_APPLY_UNARY_(TRAIT, Arg) \
, TAG \
, Arg const & \
>::type const \
operator OP(Arg &&arg BOOST_PROTO_UNARY_OP_IS_POSTFIX_ ## POST) \
{ \
return boost::proto::detail::make_expr_<TAG, DOMAIN, Arg const &>()(arg); \
} \
/**/
#define BOOST_PROTO_DEFINE_BINARY_OPERATOR(OP, TAG, TRAIT, DOMAIN) \
template<typename Left, typename Right> \
BOOST_PROTO_DISABLE_MSVC_C4714 BOOST_FORCEINLINE \
typename boost::proto::detail::enable_binary< \
DOMAIN \
, DOMAIN::proto_grammar \
, BOOST_PROTO_APPLY_BINARY_(TRAIT, Left, Right) \
, TAG \
, Left const & \
, Right const & \
>::type const \
operator OP(Left &&left, Right &&right) \
{ \
return boost::proto::detail::make_expr_<TAG, DOMAIN, Left const &, Right const &>()(left, right);\
} \
/**/
#endif
#define BOOST_PROTO_DEFINE_OPERATORS(TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_UNARY_OPERATOR(+, boost::proto::tag::unary_plus, TRAIT, DOMAIN, 0) \
BOOST_PROTO_DEFINE_UNARY_OPERATOR(-, boost::proto::tag::negate, TRAIT, DOMAIN, 0) \
BOOST_PROTO_DEFINE_UNARY_OPERATOR(*, boost::proto::tag::dereference, TRAIT, DOMAIN, 0) \
BOOST_PROTO_DEFINE_UNARY_OPERATOR(~, boost::proto::tag::complement, TRAIT, DOMAIN, 0) \
BOOST_PROTO_DEFINE_UNARY_OPERATOR(&, boost::proto::tag::address_of, TRAIT, DOMAIN, 0) \
BOOST_PROTO_DEFINE_UNARY_OPERATOR(!, boost::proto::tag::logical_not, TRAIT, DOMAIN, 0) \
BOOST_PROTO_DEFINE_UNARY_OPERATOR(++, boost::proto::tag::pre_inc, TRAIT, DOMAIN, 0) \
BOOST_PROTO_DEFINE_UNARY_OPERATOR(--, boost::proto::tag::pre_dec, TRAIT, DOMAIN, 0) \
BOOST_PROTO_DEFINE_UNARY_OPERATOR(++, boost::proto::tag::post_inc, TRAIT, DOMAIN, 1) \
BOOST_PROTO_DEFINE_UNARY_OPERATOR(--, boost::proto::tag::post_dec, TRAIT, DOMAIN, 1) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(<<, boost::proto::tag::shift_left, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(>>, boost::proto::tag::shift_right, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(*, boost::proto::tag::multiplies, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(/, boost::proto::tag::divides, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(%, boost::proto::tag::modulus, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(+, boost::proto::tag::plus, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(-, boost::proto::tag::minus, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(<, boost::proto::tag::less, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(>, boost::proto::tag::greater, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(<=, boost::proto::tag::less_equal, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(>=, boost::proto::tag::greater_equal, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(==, boost::proto::tag::equal_to, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(!=, boost::proto::tag::not_equal_to, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(||, boost::proto::tag::logical_or, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(&&, boost::proto::tag::logical_and, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(&, boost::proto::tag::bitwise_and, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(|, boost::proto::tag::bitwise_or, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(^, boost::proto::tag::bitwise_xor, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(BOOST_PP_COMMA(), boost::proto::tag::comma, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(->*, boost::proto::tag::mem_ptr, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(<<=, boost::proto::tag::shift_left_assign, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(>>=, boost::proto::tag::shift_right_assign, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(*=, boost::proto::tag::multiplies_assign, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(/=, boost::proto::tag::divides_assign, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(%=, boost::proto::tag::modulus_assign, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(+=, boost::proto::tag::plus_assign, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(-=, boost::proto::tag::minus_assign, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(&=, boost::proto::tag::bitwise_and_assign, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(|=, boost::proto::tag::bitwise_or_assign, TRAIT, DOMAIN) \
BOOST_PROTO_DEFINE_BINARY_OPERATOR(^=, boost::proto::tag::bitwise_xor_assign, TRAIT, DOMAIN) \
/**/
// Extensions are a superset of Proto expressions
template<typename T>
struct is_extension
: is_expr<T>
{};
template<typename T>
struct is_extension<T &>
: is_expr<T>
{};
#define BOOST_PROTO_APPLY_UNARY_(TRAIT, ARG) TRAIT<ARG>
#define BOOST_PROTO_APPLY_BINARY_(TRAIT, LEFT, RIGHT) boost::mpl::or_<TRAIT<LEFT>, TRAIT<RIGHT> >
namespace exprns_
{
// This defines all of Proto's built-in free operator overloads
BOOST_PROTO_DEFINE_OPERATORS(is_extension, deduce_domain)
// if_else, for the non-overloadable ternary conditional operator ?:
template<typename A0, typename A1, typename A2>
BOOST_FORCEINLINE
typename result_of::make_expr<
tag::if_else_
, deduce_domain
, A0 const &
, A1 const &
, A2 const &
>::type const
if_else(A0 const &a0, A1 const &a1, A2 const &a2)
{
return proto::detail::make_expr_<
tag::if_else_
, deduce_domain
, A0 const &
, A1 const &
, A2 const &
>()(a0, a1, a2);
}
}
using exprns_::if_else;
#undef BOOST_PROTO_APPLY_UNARY_
#undef BOOST_PROTO_APPLY_BINARY_
// Redefine BOOST_PROTO_APPLY_UNARY_ and BOOST_PROTO_APPLY_BINARY_ so that end users
// can use BOOST_PROTO_DEFINE_OPERATORS to define Proto operator overloads that work
// with their own terminal types.
#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
#define BOOST_PROTO_APPLY_UNARY_(TRAIT, ARG) \
boost::mpl::and_< \
TRAIT<ARG> \
, boost::mpl::not_<boost::proto::is_extension<ARG> > \
> \
/**/
#define BOOST_PROTO_APPLY_BINARY_(TRAIT, LEFT, RIGHT) \
boost::mpl::and_< \
boost::mpl::or_<TRAIT<LEFT>, TRAIT<RIGHT> > \
, boost::mpl::not_< \
boost::mpl::or_< \
boost::proto::is_extension<LEFT> \
, boost::proto::is_extension<RIGHT> \
> \
> \
> \
/**/
#else
#define BOOST_PROTO_APPLY_UNARY_(TRAIT, ARG) \
boost::mpl::and_< \
TRAIT<BOOST_PROTO_UNCVREF(ARG) > \
, boost::mpl::not_<boost::proto::is_extension<ARG> > \
> \
/**/
#define BOOST_PROTO_APPLY_BINARY_(TRAIT, LEFT, RIGHT) \
boost::mpl::and_< \
boost::mpl::or_<TRAIT<BOOST_PROTO_UNCVREF(LEFT) >, TRAIT<BOOST_PROTO_UNCVREF(RIGHT) > > \
, boost::mpl::not_< \
boost::mpl::or_< \
boost::proto::is_extension<LEFT> \
, boost::proto::is_extension<RIGHT> \
> \
> \
> \
/**/
#endif
}}
#if defined(_MSC_VER)
# pragma warning(pop)
#endif
#endif