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make converter able to take a tuple as conversion argument

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ado
2020-12-19 14:41:19 +01:00
parent 508e091469
commit 879c726964
4 changed files with 27 additions and 13 deletions
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14
include/ss/converter.hpp
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@@ -81,6 +81,11 @@ struct no_void_validator_tup {
using type = no_validator_tup_t<no_void_tup_t<Ts...>>;
};
template <typename... Ts>
struct no_void_validator_tup<std::tuple<Ts...>> {
using type = no_validator_tup_t<no_void_tup_t<Ts...>>;
};
template <typename... Ts>
using no_void_validator_tup_t = typename no_void_validator_tup<Ts...>::type;
@@ -152,6 +157,10 @@ class converter {
return to_object<T>(
convert_impl(elems, (arg_tuple*){}));
} else if constexpr (sizeof...(Ts) == 0 &&
is_instance_of<T, std::tuple>::value) {
return convert_impl(elems, (T*){});
} else {
return convert_impl<T, Ts...>(elems);
}
@@ -337,11 +346,11 @@ class converter {
using elem_t = std::tuple_element_t<ArgN, std::tuple<Ts...>>;
constexpr bool not_void = !std::is_void_v<elem_t>;
constexpr bool not_tuple =
constexpr bool one_element =
count_not<std::is_void, Ts...>::size == 1;
if constexpr (not_void) {
if constexpr (not_tuple) {
if constexpr (one_element) {
extract_one<elem_t>(tup, elems[ArgN], ArgN);
} else {
auto& el = std::get<TupN>(tup);
@@ -359,7 +368,6 @@ class converter {
no_void_validator_tup_t<Ts...> extract_tuple(const split_input& elems) {
static_assert(!all_of<std::is_void, Ts...>::value,
"at least one parameter must be non void");
no_void_validator_tup_t<Ts...> ret;
extract_multiple<0, 0, Ts...>(ret, elems);
return ret;