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Allow for automatic conversion of arithmetic types

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for returns from chaiscript function wrappers
This commit is contained in:
Jason Turner 2014-03-26 08:11:37 -06:00
parent db8be03cee
commit 7fade8e841
1 changed files with 17 additions and 4 deletions
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21
include/chaiscript/dispatchkit/function_call_detail.hpp
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@ -27,12 +27,11 @@ namespace chaiscript
{ {
namespace detail namespace detail
{ {
/** /**
* Internal helper class for handling the return * Internal helper class for handling the return
* value of a build_function_caller * value of a build_function_caller
*/ */
template<typename Ret> template<typename Ret, bool is_arithmetic>
struct Function_Caller_Ret struct Function_Caller_Ret
{ {
static Ret call(const std::vector<Const_Proxy_Function> &t_funcs, static Ret call(const std::vector<Const_Proxy_Function> &t_funcs,
@ -42,11 +41,25 @@ namespace chaiscript
} }
}; };
/**
* Specialization for arithmetic return types
*/
template<typename Ret>
struct Function_Caller_Ret<Ret, true>
{
static Ret call(const std::vector<Const_Proxy_Function> &t_funcs,
const std::vector<Boxed_Value> &params, const Dynamic_Cast_Conversions &t_conversions)
{
return Boxed_Number(dispatch::dispatch(t_funcs, params, t_conversions)).get_as<Ret>();
}
};
/** /**
* Specialization for void return types * Specialization for void return types
*/ */
template<> template<>
struct Function_Caller_Ret<void> struct Function_Caller_Ret<void, false>
{ {
static void call(const std::vector<Const_Proxy_Function> &t_funcs, static void call(const std::vector<Const_Proxy_Function> &t_funcs,
const std::vector<Boxed_Value> &params, const Dynamic_Cast_Conversions &t_conversions) const std::vector<Boxed_Value> &params, const Dynamic_Cast_Conversions &t_conversions)
@ -83,7 +96,7 @@ namespace chaiscript
BOOST_PP_REPEAT(n, addparam, ~); BOOST_PP_REPEAT(n, addparam, ~);
return Function_Caller_Ret<Ret>::call(funcs, params, t_conversions); return Function_Caller_Ret<Ret, boost::is_arithmetic<Ret>::value>::call(funcs, params, t_conversions);
} }
/** /**