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Change variables() into a free function.

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King_DuckZ 2020-04-28 20:50:55 +02:00
parent b5bf777a05
commit 2122cb628d
1 changed files with 25 additions and 32 deletions
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57
src/wren/vm.hpp
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@ -61,15 +61,7 @@ namespace wren {
void interpret (const char* module_name, const char* script);
void interpret (const std::string& module_name, const std::string& script);
void release (Handle& handle) noexcept;
template <typename T> T slot (int slot_num);
#if __cpp_concepts >= 201907
template <typename... Outs, detail::ConstCharTuple... Params>
#else
template <typename... Outs, typename... Params>
#endif
std::tuple<Outs...> variables(Params&&... modules_names);
void ensure_slots(int num_slots);
void variable(const char* module, const char* name, int slot);
void variable(const ModuleAndName& mod_and_name, int slot);
@ -118,6 +110,29 @@ namespace wren {
return (*M)(args...);
}
};
#if __cpp_concepts >= 201907
template <typename... Outs, int... Indices, ConstCharTuple... Params>
#else
template <typename... Outs, int... Indices, typename... Params>
#endif
inline std::tuple<Outs...> variables_impl (
VM& vm,
std::integer_sequence<int, Indices...>,
Params&&... modules_names
) {
if constexpr (sizeof...(Outs) == 0) {
return {};
}
else {
static_assert(sizeof...(Params) == sizeof...(Outs), "Expected a module/name pair per requested output");
static_assert(sizeof...(Outs) == sizeof...(Indices), "Mismatching index count");
vm.ensure_slots(sizeof...(Outs));
(vm.variable(modules_names, Indices), ...);
return std::tuple<Outs...>(vm.slot<Outs>(Indices)...);
}
}
} //namespace detail
template <typename T>
@ -165,29 +180,7 @@ namespace wren {
#else
template <typename... Outs, typename... Params>
#endif
std::tuple<Outs...> VM::variables(Params&&... modules_names) {
return variables_impl<Outs...>(std::make_integer_sequence<int, sizeof...(Outs)>(), std::forward<Params>(modules_names)...);
}
#if __cpp_concepts >= 201907
template <typename... Outs, int... Indices, detail::ConstCharTuple... Params>
#else
template <typename... Outs, int... Indices, typename... Params>
#endif
inline std::tuple<Outs...> VM::variables_impl (
std::integer_sequence<int, Indices...>,
Params&&... modules_names
) {
if constexpr (sizeof...(Outs) == 0) {
return {};
}
else {
static_assert(sizeof...(Params) == sizeof...(Outs), "Expected a module/name pair per requested output");
static_assert(sizeof...(Outs) == sizeof...(Indices), "Mismatching index count");
ensure_slots(sizeof...(Outs));
(this->variable(modules_names, Indices), ...);
return std::tuple<Outs...>(this->slot<Outs>(Indices)...);
}
std::tuple<Outs...> variables(VM& vm, Params&&... modules_names) {
return detail::variables_impl<Outs...>(vm, std::make_integer_sequence<int, sizeof...(Outs)>(), std::forward<Params>(modules_names)...);
}
} //namespace wren