Emily Boudreaux
ec13264050
A bug was discovered in glaze which prevented valid toml output. We have switched to toml++ and reflect-cpp. The interface has remained the same so this should not break any code
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
#ifndef RFL_INTERNAL_GETTER_HPP_
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#define RFL_INTERNAL_GETTER_HPP_
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#include "../Tuple.hpp"
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#include "StringLiteral.hpp"
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#include "find_index.hpp"
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namespace rfl::internal {
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// ----------------------------------------------------------------------------
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template <class NamedTupleType>
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struct Getter;
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// ----------------------------------------------------------------------------
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/// Default case - anything that cannot be explicitly matched.
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template <class NamedTupleType>
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struct Getter {
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public:
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/// Retrieves the indicated value from the tuple.
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template <int _index>
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static inline auto& get(NamedTupleType& _tup) {
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return rfl::get<_index>(_tup.values());
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}
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/// Gets a field by name.
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template <StringLiteral _field_name>
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static inline auto& get(NamedTupleType& _tup) {
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constexpr auto index =
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find_index<_field_name, typename NamedTupleType::Fields>();
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return Getter<NamedTupleType>::template get<index>(_tup);
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}
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/// Gets a field by the field type.
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template <class Field>
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static inline auto& get(NamedTupleType& _tup) {
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constexpr auto index =
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find_index<Field::name_, typename NamedTupleType::Fields>();
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static_assert(
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std::is_same<typename tuple_element_t<
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index, typename NamedTupleType::Fields>::Type,
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typename Field::Type>(),
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"If two fields have the same name, "
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"their type must be the same as "
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"well.");
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return Getter<NamedTupleType>::template get<index>(_tup);
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}
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/// Retrieves the indicated value from the tuple.
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template <int _index>
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static inline const auto& get_const(const NamedTupleType& _tup) {
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return rfl::get<_index>(_tup.values());
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}
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/// Gets a field by name.
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template <StringLiteral _field_name>
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static inline const auto& get_const(const NamedTupleType& _tup) {
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constexpr auto index =
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find_index<_field_name, typename NamedTupleType::Fields>();
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return Getter<NamedTupleType>::template get_const<index>(_tup);
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}
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/// Gets a field by the field type.
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template <class Field>
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static inline const auto& get_const(const NamedTupleType& _tup) {
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constexpr auto index =
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find_index<Field::name_, typename NamedTupleType::Fields>();
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static_assert(
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std::is_same<typename tuple_element_t<
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index, typename NamedTupleType::Fields>::Type,
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typename Field::Type>(),
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"If two fields have the same name, "
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"their type must be the same as "
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"well.");
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return Getter<NamedTupleType>::template get_const<index>(_tup);
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}
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};
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// ----------------------------------------------------------------------------
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} // namespace rfl::internal
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#endif
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