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Make scan variadic

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This commit is contained in:
Victor Zverovich
2024-02-04 07:44:11 -08:00
parent 06311ed1ce
commit e17bc67547
2 changed files with 18 additions and 8 deletions
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11
test/scan.h
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@ -582,6 +582,8 @@ template <typename... T> class scan_data {
return std::get<0>(values_);
}
auto values() const -> const std::tuple<T...>& { return values_; }
auto make_args() -> std::array<scan_arg, sizeof...(T)> {
auto args = std::array<scan_arg, sizeof...(T)>();
detail::make_args<0>(args, values_);
@ -600,10 +602,13 @@ class scan_error {};
template <typename T, typename E> class expected {
private:
T value_;
bool has_value_ = true;
public:
expected(T value) : value_(std::move(value)) {}
explicit operator bool() const { return has_value_; }
auto operator->() const -> const T* { return &value_; }
};
@ -624,9 +629,9 @@ auto scan_to(string_view input, string_view fmt, T&... args)
return vscan(input, fmt, make_scan_args(args...));
}
template <typename T>
auto scan(string_view input, string_view fmt) -> scan_result<T> {
auto data = scan_data<T>();
template <typename... T>
auto scan(string_view input, string_view fmt) -> scan_result<T...> {
auto data = scan_data<T...>();
vscan(input, fmt, data.make_args());
return data;
}