100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
// This file is distributed under the BSD License.
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// See "license.txt" for details.
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// Copyright 2009-2010, Jonathan Turner (jonathan@emptycrate.com)
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// and Jason Turner (jason@emptycrate.com)
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// http://www.chaiscript.com
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#include <boost/preprocessor.hpp>
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#define addparam(z,n,text) params.push_back(boost::is_reference<Param ## n>::value?Boxed_Value(boost::ref(BOOST_PP_CAT(p, n))):Boxed_Value(BOOST_PP_CAT(p, n) ));
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#define curry(z,n,text) BOOST_PP_CAT(_, BOOST_PP_INC(n))
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#ifndef BOOST_PP_IS_ITERATING
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#ifndef __function_call_detail_hpp__
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#define __function_call_detail_hpp__
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#include <boost/shared_ptr.hpp>
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#include <boost/bind.hpp>
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#include <boost/function.hpp>
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#include <string>
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#include <vector>
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#include "proxy_functions.hpp"
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namespace chaiscript
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{
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namespace detail
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{
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/**
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* Internal helper class for handling the return
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* value of a build_function_caller
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*/
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template<typename Ret>
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struct Function_Caller_Ret
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{
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static Ret call(const std::vector<std::pair<std::string, Const_Proxy_Function > > &t_funcs,
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const std::vector<Boxed_Value> ¶ms)
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{
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return boxed_cast<Ret>(dispatch(t_funcs, params));
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}
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};
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/**
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* Specialization for void return types
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*/
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template<>
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struct Function_Caller_Ret<void>
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{
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static void call(const std::vector<std::pair<std::string, Const_Proxy_Function > > &t_funcs,
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const std::vector<Boxed_Value> ¶ms)
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{
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dispatch(t_funcs, params);
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}
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};
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}
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}
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#define BOOST_PP_ITERATION_LIMITS ( 0, 9 )
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#define BOOST_PP_FILENAME_1 <chaiscript/dispatchkit/function_call_detail.hpp>
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#include BOOST_PP_ITERATE()
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# endif
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#else
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# define n BOOST_PP_ITERATION()
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namespace chaiscript
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{
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namespace detail
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{
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/**
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* used internally for unwrapping a function call's types
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*/
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template<typename Ret BOOST_PP_COMMA_IF(n) BOOST_PP_ENUM_PARAMS(n, typename Param) >
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Ret function_caller(const std::vector<std::pair<std::string, Const_Proxy_Function > > &funcs
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BOOST_PP_COMMA_IF(n) BOOST_PP_ENUM_BINARY_PARAMS(n, Param, p) )
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{
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std::vector<Boxed_Value> params;
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BOOST_PP_REPEAT(n, addparam, ~)
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return Function_Caller_Ret<Ret>::call(funcs, params);
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}
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/**
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* used internally for unwrapping a function call's types
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*/
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template<typename Ret BOOST_PP_COMMA_IF(n) BOOST_PP_ENUM_PARAMS(n, typename Param) >
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boost::function<Ret (BOOST_PP_ENUM_PARAMS(n, Param)) >
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build_function_caller_helper(Ret (BOOST_PP_ENUM_PARAMS(n, Param)), const std::vector<std::pair<std::string, Const_Proxy_Function> > &funcs)
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{
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return boost::bind(&function_caller<Ret BOOST_PP_COMMA_IF(n) BOOST_PP_ENUM_PARAMS(n, Param)>, funcs
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BOOST_PP_ENUM_TRAILING(n, curry, ~));
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}
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}
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}
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#undef n
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#endif
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