119 lines
		
	
	
		
			3.4 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			119 lines
		
	
	
		
			3.4 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
#include <boost/preprocessor.hpp>
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#define addparam(z,n,text)  params.push_back(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_hpp__
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#define __function_call_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 dispatchkit
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{
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  template<typename Ret>
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    class Function_Caller_Ret
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    {
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      public:
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        Function_Caller_Ret()
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        {
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        }
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        Ret call(const std::vector<std::pair<std::string, boost::shared_ptr<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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  template<>
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    class Function_Caller_Ret<void>
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    {
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      public:
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        Function_Caller_Ret()
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        {
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        }
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        void call(const std::vector<std::pair<std::string, boost::shared_ptr<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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#define BOOST_PP_ITERATION_LIMITS ( 0, 9 )
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#define BOOST_PP_FILENAME_1 "function_call.hpp"
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#include BOOST_PP_ITERATE()
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namespace dispatchkit
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{ 
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  template<typename FunctionType>
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    boost::function<FunctionType>
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      build_function_caller(const std::vector<std::pair<std::string, boost::shared_ptr<Proxy_Function> > > &funcs)
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      {
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        FunctionType *p;
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        return build_function_caller_helper(p, funcs);
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      }
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  template<typename FunctionType>
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    boost::function<FunctionType>
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      build_function_caller(boost::shared_ptr<Proxy_Function> func)
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      {
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        std::vector<std::pair<std::string, boost::shared_ptr<Proxy_Function> > > funcs;
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        funcs.push_back(std::make_pair(std::string(), func));
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        return build_function_caller<FunctionType>(funcs);
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      }
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  template<typename FunctionType>
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    boost::function<FunctionType>
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      build_function_caller(const Boxed_Value &bv)
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      {
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        return build_function_caller<FunctionType>(boxed_cast<boost::shared_ptr<Proxy_Function> >(bv));
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      }
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  template<typename FunctionType, typename ScriptEngine>
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    boost::function<FunctionType> build_functor(ScriptEngine &e, const std::string &script)
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    {
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      return build_function_caller<FunctionType>(e.evaluate_string(script));
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    }
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}
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# endif
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#else
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# define n BOOST_PP_ITERATION()
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namespace dispatchkit
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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, boost::shared_ptr<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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  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, boost::shared_ptr<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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#endif
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