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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\python\detail\defaults_def.hpp
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/////////////////////////////////////////////////////////////////////////////// // // Copyright David Abrahams 2002, Joel de Guzman, 2002. // 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) // /////////////////////////////////////////////////////////////////////////////// #if !defined(BOOST_PP_IS_ITERATING) #ifndef DEFAULTS_DEF_JDG20020811_HPP #define DEFAULTS_DEF_JDG20020811_HPP #include
#include
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/////////////////////////////////////////////////////////////////////////////// namespace boost { namespace python { struct module; namespace objects { struct class_base; } namespace detail { // Called as:: // // name_space_def(ns, "func", func, kw, policies, docstring, &ns) // // Dispatch to properly add f to namespace ns. // // @group define_stub_function helpers { template
static void name_space_def( NameSpaceT& name_space , char const* name , Func f , keyword_range const& kw , CallPolicies const& policies , char const* doc , objects::class_base* ) { typedef typename NameSpaceT::wrapped_type wrapped_type; objects::add_to_namespace( name_space, name, detail::make_keyword_range_function( f, policies, kw, get_signature(f, (wrapped_type*)0)) , doc ); } template
static void name_space_def( object& name_space , char const* name , Func f , keyword_range const& kw , CallPolicies const& policies , char const* doc , ... ) { scope within(name_space); detail::scope_setattr_doc( name , detail::make_keyword_range_function(f, policies, kw) , doc); } // For backward compatibility -- is this obsolete? template
static void name_space_def( NameSpaceT& name_space , char const* name , Func f , keyword_range const& kw // ignored , CallPolicies const& policies , char const* doc , module* ) { name_space.def(name, f, policies, doc); } // } // Expansions of :: // // template
// inline void // define_stub_function( // char const* name, OverloadsT s, NameSpaceT& name_space, mpl::int_
) // { // name_space.def(name, &OverloadsT::func_N); // } // // where N runs from 0 to BOOST_PYTHON_MAX_ARITY. // // The set of overloaded functions (define_stub_function) expects: // // 1. char const* name: function name that will be visible to python // 2. OverloadsT: a function overloads struct (see defaults_gen.hpp) // 3. NameSpaceT& name_space: a python::class_ or python::module instance // 4. int_t
: the Nth overloaded function (OverloadsT::func_N) // (see defaults_gen.hpp) // 5. char const* name: doc string // // @group define_stub_function
{ template
struct define_stub_function {}; #define BOOST_PP_ITERATION_PARAMS_1 \ (3, (0, BOOST_PYTHON_MAX_ARITY,
)) #include BOOST_PP_ITERATE() // } // This helper template struct does the actual recursive // definition. There's a generic version // define_with_defaults_helper
and a terminal case // define_with_defaults_helper<0>. The struct and its // specialization has a sole static member function def that // expects: // // 1. char const* name: function name that will be // visible to python // // 2. OverloadsT: a function overloads struct // (see defaults_gen.hpp) // // 3. NameSpaceT& name_space: a python::class_ or // python::module instance // // 4. char const* name: doc string // // The def static member function calls a corresponding // define_stub_function
. The general case recursively calls // define_with_defaults_helper
::def until it reaches the // terminal case case define_with_defaults_helper<0>. template
struct define_with_defaults_helper { template
static void def( char const* name, StubsT stubs, keyword_range kw, CallPolicies const& policies, NameSpaceT& name_space, char const* doc) { // define the NTH stub function of stubs define_stub_function
::define(name, stubs, kw, policies, name_space, doc); if (kw.second > kw.first) --kw.second; // call the next define_with_defaults_helper define_with_defaults_helper
::def(name, stubs, kw, policies, name_space, doc); } }; template <> struct define_with_defaults_helper<0> { template
static void def( char const* name, StubsT stubs, keyword_range const& kw, CallPolicies const& policies, NameSpaceT& name_space, char const* doc) { // define the Oth stub function of stubs define_stub_function<0>::define(name, stubs, kw, policies, name_space, doc); // return } }; // define_with_defaults // // 1. char const* name: function name that will be // visible to python // // 2. OverloadsT: a function overloads struct // (see defaults_gen.hpp) // // 3. CallPolicies& policies: Call policies // 4. NameSpaceT& name_space: a python::class_ or // python::module instance // // 5. SigT sig: Function signature typelist // (see defaults_gen.hpp) // // 6. char const* name: doc string // // This is the main entry point. This function recursively // defines all stub functions of StubT (see defaults_gen.hpp) in // NameSpaceT name_space which can be either a python::class_ or // a python::module. The sig argument is a typelist that // specifies the return type, the class (for member functions, // and the arguments. Here are some SigT examples: // // int foo(int) mpl::vector
// void bar(int, int) mpl::vector
// void C::foo(int) mpl::vector
// template
inline void define_with_defaults( char const* name, OverloadsT const& overloads, NameSpaceT& name_space, SigT const&) { typedef typename mpl::front
::type return_type; typedef typename OverloadsT::void_return_type void_return_type; typedef typename OverloadsT::non_void_return_type non_void_return_type; typedef typename mpl::if_c< boost::is_same
::value , void_return_type , non_void_return_type >::type stubs_type; BOOST_STATIC_ASSERT( (stubs_type::max_args) <= mpl::size
::value); typedef typename stubs_type::template gen
gen_type; define_with_defaults_helper
::def( name , gen_type() , overloads.keywords() , overloads.call_policies() , name_space , overloads.doc_string()); } } // namespace detail }} // namespace boost::python #endif // DEFAULTS_DEF_JDG20020811_HPP #else // defined(BOOST_PP_IS_ITERATING) // PP vertical iteration code template <> struct define_stub_function
{ template
static void define( char const* name , StubsT const& , keyword_range const& kw , CallPolicies const& policies , NameSpaceT& name_space , char const* doc) { detail::name_space_def( name_space , name , &StubsT::BOOST_PP_CAT(func_, BOOST_PP_ITERATION()) , kw , policies , doc , &name_space); } }; #endif // !defined(BOOST_PP_IS_ITERATING)
defaults_def.hpp
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