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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\xpressive\proto\generate.hpp
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#ifndef BOOST_PP_IS_ITERATING /////////////////////////////////////////////////////////////////////////////// /// \file generate.hpp /// Contains definition of generate\<\> class template, which end users can /// specialize for generating domain-specific expression wrappers. // // Copyright 2007 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_GENERATE_HPP_EAN_02_13_2007 #define BOOST_PROTO_GENERATE_HPP_EAN_02_13_2007 #include
#include
#include
#include
#include
#include
#include
#include
#include
namespace boost { namespace proto { namespace detail { template
struct generate_if : lazy_enable_if< matches
, typename Domain::template apply
> {}; // Optimization, generate fewer templates... template
struct generate_if
{ typedef Expr type; }; template
struct arity_; template
struct arity_
> : mpl::long_
{}; template
struct tag_; template
struct tag_
> { typedef Tag type; }; template
struct args_; template
struct args_
> { typedef Args type; }; template
::value> struct by_value_generator_; #define BOOST_PROTO_DEFINE_BY_VALUE_TYPE(Z, N, Expr)\ typename result_of::unref
::type::BOOST_PP_CAT(arg, N) >::type #define BOOST_PROTO_DEFINE_BY_VALUE(Z, N, expr)\ proto::unref(expr.BOOST_PP_CAT(arg, N)) #define BOOST_PP_ITERATION_PARAMS_1 (3, (0, BOOST_PROTO_MAX_ARITY,
)) #include BOOST_PP_ITERATE() #undef BOOST_PROTO_DEFINE_BY_VALUE #undef BOOST_PROTO_DEFINE_BY_VALUE_TYPE } namespace generatorns_ { struct default_generator { template
struct apply { typedef Expr type; }; template
static Expr const &make(Expr const &expr) { return expr; } }; template
class Extends> struct generator { template
struct apply { typedef Extends
type; }; template
static Extends
make(Expr const &expr) { return Extends
(expr); } }; template
class Extends> struct pod_generator { template
struct apply { typedef Extends
type; }; template
static Extends
make(Expr const &expr) { Extends
that = {expr}; return that; } }; template
struct by_value_generator { template
struct apply : Generator::template apply< typename detail::by_value_generator_
::type > {}; template
static typename apply
::type make(Expr const &expr) { return Generator::make(detail::by_value_generator_
::make(expr)); } }; } }} #endif // BOOST_PROTO_GENERATE_HPP_EAN_02_13_2007 #else // BOOST_PP_IS_ITERATING #define N BOOST_PP_ITERATION() template
struct by_value_generator_
{ typedef expr< typename tag_
::type , BOOST_PP_CAT(args, N)< // typename result_of::unref
::type::arg0>::type, ... BOOST_PP_ENUM(BOOST_PP_MAX(N, 1), BOOST_PROTO_DEFINE_BY_VALUE_TYPE, Expr) > > type; static type const make(Expr const &expr) { type that = { // proto::unref(expr.arg0), ... BOOST_PP_ENUM(BOOST_PP_MAX(N, 1), BOOST_PROTO_DEFINE_BY_VALUE, expr) }; return that; } }; #undef N #endif
generate.hpp
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