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◆ main openmsx / src / serialize_constr.hh
1.4 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
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#ifndef SERIALIZE_CONSTR_HH
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#define SERIALIZE_CONSTR_HH
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#include <tuple>
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namespace openmsx {
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/** Serialize (local) constructor arguments.
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 *
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 * Some classes don't have a default constructor. To be able to create new
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 * instances of such classes, we need to invoke the constructor with some
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 * parameters (see also Creator utility class above).
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 *
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 * SerializeConstructorArgs can be specialized for classes that need such extra
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 * constructor arguments.
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 *
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 * This only stores the 'local' constructor arguments, this means the arguments
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 * that are specific per instance. There can also be 'global' args, these are
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 * known in the context where the class is being loaded (so these don't need to
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 * be stored in the archive). See below for more details on global constr args.
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 *
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 * The serialize_as_enum class has the following members:
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 *   using type = tuple<...>
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 *     Tuple that holds the result of load() (see below)
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 *   void save(Archive& ar, const T& t)
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 *     This method should store the constructor args in the given archive
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 *   type load(Archive& ar, unsigned version)
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 *     This method should load the args from the given archive and return
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 *     them in a tuple.
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 */
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template<typename T> struct SerializeConstructorArgs
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{
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	using type = std::tuple<>;
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	template<typename Archive>
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	void save(Archive& /*ar*/, const T& /*t*/) const {}
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	template<typename Archive>
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	type load(Archive& /*ar*/, unsigned /*version*/) const { return {}; }
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};
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} // namespace openmsx
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#endif