CONVERSION POLICY MAP

Директива препроцессора, облегчающая использование шаблона conversion_policy_map.

Пример

Код:

conversion_policy_map<SomeIdentifierType,
        conversion_map_entity<SomeIdentifierType, SomeIdentifierType::Id1, compound_conversion_sequence<implicit_conversion_sequence<I1*>, static_conversion_sequence<I2*, I4*>>>,
        conversion_map_entity<SomeIdentifierType, SomeIdentifierType::Id2, static_conversion_sequence<I2*>>,
        conversion_map_entity<SomeIdentifierType, SomeIdentifierType::Id3, static_conversion_sequence<I3*>>
    >;

аналогичен коду:

CONVERSION_POLICY_MAP(SomeIdentifierType,
        CONVERSION_MAP_ENTITY(SomeIdentifierType::Id1, compound_conversion_sequence<implicit_conversion_sequence<I1*>, static_conversion_sequence<I2*, I4*>>),
        CONVERSION_MAP_ENTITY(SomeIdentifierType::Id2, static_conversion_sequence<I2*>),
        CONVERSION_MAP_ENTITY(SomeIdentifierType::Id3, static_conversion_sequence<I3*>)
    );