KeqingMoe/argparse
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Merge pull request #192 from jun-sheaf/patch-2

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Use references for any_cast
This commit is contained in:
Pranav 2022-09-03 13:14:01 -05:00 committed by GitHub
commit b8160a86b5
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1 changed files with 7 additions and 7 deletions
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14
include/argparse/argparse.hpp
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@ -605,11 +605,10 @@ public:
if constexpr (!details::IsContainer<T>) {
return get<T>() == rhs;
} else {
using ValueType = typename T::value_type;
auto lhs = get<T>();
return std::equal(std::begin(lhs), std::end(lhs), std::begin(rhs),
std::end(rhs), [](const auto &lhs, const auto &rhs) {
return std::any_cast<const ValueType &>(lhs) == rhs;
return lhs == rhs;
});
}
}
@ -856,16 +855,16 @@ private:
* Get argument value given a type
* @throws std::logic_error in case of incompatible types
*/
template <typename T> T get() const {
template <typename T> auto get() const -> std::conditional_t<details::IsContainer<T>, T, const T&> {
if (!m_values.empty()) {
if constexpr (details::IsContainer<T>) {
return any_cast_container<T>(m_values);
} else {
return std::any_cast<T>(m_values.front());
return *std::any_cast<T>(&m_values.front());
}
}
if (m_default_value.has_value()) {
return std::any_cast<T>(m_default_value);
return *std::any_cast<T>(&m_default_value);
}
if constexpr (details::IsContainer<T>) {
if (!m_accepts_optional_like_value) {
@ -901,7 +900,7 @@ private:
T result;
std::transform(
std::begin(operand), std::end(operand), std::back_inserter(result),
[](const auto &value) { return std::any_cast<ValueType>(value); });
[](const auto &value) { return *std::any_cast<ValueType>(&value); });
return result;
}
@ -1057,7 +1056,8 @@ public:
* @throws std::logic_error if the option has no value
* @throws std::bad_any_cast if the option is not of type T
*/
template <typename T = std::string> T get(std::string_view arg_name) const {
template <typename T = std::string> auto get(std::string_view arg_name) const
-> std::conditional_t<details::IsContainer<T>, T, const T&> {
if (!m_is_parsed) {
throw std::logic_error("Nothing parsed, no arguments are available.");
}