Files
MagicSetEditor2/src/util/reflect.hpp
T
twanvl dc0ece358b Split GetMember into GetMember (for handle) and GetDefaultMember (for store);
Split IMPLEMENT_REFLECTION macro to match

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@24 0fc631ac-6414-0410-93d0-97cfa31319b6
2006-10-19 12:29:51 +00:00

140 lines
5.3 KiB
C++

//+----------------------------------------------------------------------------+
//| Description: Magic Set Editor - Program to make Magic (tm) cards |
//| Copyright: (C) 2001 - 2006 Twan van Laarhoven |
//| License: GNU General Public License 2 or later (see file COPYING) |
//+----------------------------------------------------------------------------+
#ifndef HEADER_UTIL_REFLECT
#define HEADER_UTIL_REFLECT
/** @file util/reflect.hpp
*
* @brief Reflection of classes, currently reflection is used for (de)serialization.
*/
// ----------------------------------------------------------------------------- : Includes
#include "io/reader.hpp"
#include "io/writer.hpp"
#include "io/get_member.hpp"
// ----------------------------------------------------------------------------- : Declaring reflection
/// Declare that a class supports reflection
/** Reflection allows the member variables of a class to be inspected at runtime.
*/
#define DECLARE_REFLECTION() \
protected: \
template<class Tag> void reflect_impl(Tag& tag); \
friend class Reader; \
friend class Writer; \
friend class GetDefaultMember; \
friend class GetMember; \
void reflect(Reader& reader); \
void reflect(Writer& writer); \
void reflect(GetDefaultMember& gdm); \
void reflect(GetMember& gm)
/// Declare that a class supports reflection, which can be overridden in derived classes
#define DECLARE_REFLECTION_VIRTUAL() \
protected: \
template<class Tag> void reflect_impl(Tag& tag); \
friend class Reader; \
friend class Writer; \
friend class GetDefaultMember; \
friend class GetMember; \
/* extra level of indirection between Tag::handle \
* and reflect_impl, to allow for virtual */ \
virtual void reflect(Reader& reader); \
virtual void reflect(Writer& writer); \
virtual void reflect(GetDefaultMember& gdm); \
virtual void reflect(GetMember& gm)
// ----------------------------------------------------------------------------- : Implementing reflection
/// Implement the refelection of a class type Cls
/** Reflection allows the member variables of a class to be inspected at runtime.
*
* Currently creates the methods:
* - Reader ::handle(Cls&)
* - Writer ::handle(const Cls&)
* - GetMember ::handle(const Cls&)
* Usage:
* @code
* IMPLEMENT_REFLECTION(MyClass) {
* REFLECT(a_variable_in_my_class);
* REFLECT(another_variable_in_my_class);
* }
* @endcode
*/
#define IMPLEMENT_REFLECTION(Cls) \
REFLECT_OBJECT_READER(Cls) \
REFLECT_OBJECT_WRITER(Cls) \
REFLECT_OBJECT_GET_DEFAULT_MEMBER_NOT(Cls) \
REFLECT_OBJECT_GET_MEMBER(Cls) \
template <class Tag> \
void Cls::reflect_impl(Tag& tag)
/// Implement the refelection of a class type Cls that only uses REFLECT_NAMELESS
#define IMPLEMENT_REFLECTION_NAMELESS(Cls) \
REFLECT_OBJECT_READER(Cls) \
REFLECT_OBJECT_WRITER(Cls) \
REFLECT_OBJECT_GET_DEFAULT_MEMBER(Cls) \
REFLECT_OBJECT_GET_MEMBER_NOT(Cls) \
template <class Tag> \
void Cls::reflect_impl(Tag& tag)
/// Implement the refelection of a class type Cls, but only for Reader and Writer
#define IMPLEMENT_REFLECTION_NO_GET_MEMBER(Cls) \
REFLECT_OBJECT_READER(Cls) \
REFLECT_OBJECT_WRITER(Cls) \
template <class Tag> \
void Cls::reflect_impl(Tag& tag)
/// Reflect a variable
#define REFLECT(var) tag.handle(_(#var), var)
/// Reflect a variable under the given name
#define REFLECT_N(name, var) tag.handle(_(name), var)
/// Reflect a variable without a name, should be used only once per class
#define REFLECT_NAMELESS(var) tag.handle(var)
/// Declare that the variables of a base class should also be reflected
#define REFLECT_BASE(Base) Base::reflect_impl(tag)
// ----------------------------------------------------------------------------- : Reflecting enums
/// Implement the refelection of a enumeration type Enum
/** Usage:
* @code
* IMPLEMENT_REFLECTION_ENUM(MyEnum) {
* VALUE(value_of_enum_1);
* VALUE(value_of_enum_2);
* }
* @endcode
*
* When reading the first value declared is the default value
*
* Currently creates the methods:
* - Reader::handle(Enum&
* - Writer::handle(const Enum&)
* - GetDefaultMember::handle(const Enum&)
*/
#define IMPLEMENT_REFLECTION_ENUM(Enum) \
template <class Tag> \
void reflect_ ## Enum (Enum& enum_, Tag& tag); \
REFLECT_ENUM_READER(Enum) \
REFLECT_ENUM_WRITER(Enum) \
REFLECT_ENUM_GET_MEMBER(Enum) \
template <class Tag> \
void reflect_ ## Enum (Enum& enum_, Tag& tag)
/// Declare a possible value of an enum
#define VALUE(val) tag.handle(_(#val), val, enum_)
/// Declare a possible value of an enum under the given name
#define VALUE_N(name, val) tag.handle(_(name), val, enum_)
// ----------------------------------------------------------------------------- : EOF
#endif