ado/ssp
1
1
Fork 0
mirror of https://github.com/red0124/ssp.git synced 2025-12-14 21:59:55 +01:00
Code Issues Packages Projects Releases Wiki Activity

make converter able to take a tuple as conversion argument

Browse Source
This commit is contained in:
ado
2020-12-19 14:41:19 +01:00
parent 508e091469
commit 879c726964
4 changed files with 27 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
include/ss/parser.hpp
View File

@@ -115,7 +115,7 @@ class parser {
return composite_with(std::move(value));
}
auto values() {
std::tuple<Ts...> values() {
return values_;
}
@@ -198,10 +198,13 @@ class parser {
// failed
template <typename Arg, typename Fun = None>
void try_invoke(Arg&& arg, Fun&& fun) {
if constexpr (!std::is_same_v<std::decay_t<Fun>, None>) {
constexpr bool is_none =
std::is_same_v<std::decay_t<Fun>, None>;
if constexpr (!is_none) {
using Ret = decltype(
try_invoke_impl(arg, std::forward<Fun>(fun)));
if constexpr (!std::is_same_v<Ret, void>) {
constexpr bool returns_void = std::is_same_v<Ret, void>;
if constexpr (!returns_void) {
if (!try_invoke_impl(arg,
std::forward<Fun>(fun))) {
set_error_failed_check();
@@ -219,7 +222,9 @@ class parser {
// laid out as a parameter pack
template <typename Arg, typename Fun = None>
auto try_invoke_impl(Arg&& arg, Fun&& fun) {
if constexpr (!std::is_same_v<Fun, None>) {
constexpr bool is_none =
std::is_same_v<std::decay_t<Fun>, None>;
if constexpr (!is_none) {
if constexpr (std::is_invocable_v<Fun>) {
return fun();
} else if constexpr (std::is_invocable_v<Fun, Arg>) {