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cmdopt2/args: create a parseable trait

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This commit is contained in:
Danny Robson 2022-03-21 10:44:44 +10:00
parent 179f016fa1
commit 11dc485c88
1 changed files with 6 additions and 2 deletions
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8
cmdopt2/args.hpp
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@ -29,6 +29,10 @@ namespace cruft::cmdopt2 {
}; };
template <typename T>
concept parseable = std::is_arithmetic_v<T>;
template <typename BaseT> template <typename BaseT>
struct ops_t : argument_t { struct ops_t : argument_t {
template <typename ValueT> template <typename ValueT>
@ -39,7 +43,7 @@ namespace cruft::cmdopt2 {
bind (ValueT &ref) bind (ValueT &ref)
{ {
CHECK (!acceptor1); CHECK (!acceptor1);
if constexpr (cruft::concepts::stringy<ValueT>) { if constexpr (parseable<ValueT>) {
acceptor1 = [&ref] (std::string_view str) { ref = str; }; acceptor1 = [&ref] (std::string_view str) { ref = str; };
} else { } else {
acceptor1 = [&ref] (std::string_view str) { ref = parse::from_string<ValueT> (str); }; acceptor1 = [&ref] (std::string_view str) { ref = parse::from_string<ValueT> (str); };
@ -53,7 +57,7 @@ namespace cruft::cmdopt2 {
{ {
CHECK (!acceptor1); CHECK (!acceptor1);
if constexpr (std::is_same_v<ValueT, std::string>) { if constexpr (parseable<ValueT>) {
acceptor1 = [&ref] (std::string_view str) { ref = str; }; acceptor1 = [&ref] (std::string_view str) { ref = str; };
} else { } else {
acceptor1 = [&ref] (std::string_view str) { ref = parse::from_string<ValueT> (str); }; acceptor1 = [&ref] (std::string_view str) { ref = parse::from_string<ValueT> (str); };