structs.hpp

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#include <map>
#include <string_view>
 
namespace alpaqa::params {
 
/// Function wrapper to set attributes of a struct, type-erasing the type of the
/// attribute.
template <class T, class S>
struct attribute_accessor;
 
/// Dictionary that maps struct attribute names to type-erased functions that
/// set those attributes.
template <class T, class S>
using attribute_table_t = std::map<std::string_view, attribute_accessor<T, S>>;
 
/// Specialize this type to define the attribute name to attribute setters
/// dictionaries for a struct type @p T.
template <class T, class S>
struct attribute_table;
 
/// Helper macro to easily specialize @ref alpaqa::params::attribute_table.
#define PARAMS_TABLE(type_, ...)                                               \
    template <class S>                                                         \
    struct attribute_table<type_, S> {                                         \
        using type = type_;                                                    \
        inline static const attribute_table_t<type, S> table{__VA_ARGS__};     \
    }
 
/// Helper macro to easily initialize a
/// @ref alpaqa::params::attribute_table_t.
#define PARAMS_MEMBER(name)                                                    \
    { #name, &type::name }
 
/// Dictionary that maps struct attribute names to type-erased functions that
/// set those attributes.
template <class T, class S>
using attribute_alias_table_t = std::map<std::string_view, std::string_view>;
 
/// Specialize this type to define the alternative attribute name to attribute
/// setters dictionaries for a struct type @p T.
template <class T, class S>
struct attribute_alias_table;
 
/// Helper macro to easily specialize @ref alpaqa::params::attribute_alias_table.
#define PARAMS_ALIAS_TABLE(type_, ...)                                         \
    template <class S>                                                         \
    struct attribute_alias_table<type_, S> {                                   \
        using type = type_;                                                    \
        inline static const attribute_alias_table_t<type, S> table{            \
            __VA_ARGS__};                                                      \
    }
 
/// Helper macro to easily initialize a
/// @ref alpaqa::params::attribute_alias_table_t.
#define PARAMS_MEMBER_ALIAS(alias, name)                                       \
    { #alias, #name }
 
} // namespace alpaqa::params