raze-gles/source/common/dobject/dobject.h
Christoph Oelckers ceb07280cf - more work on the menu.
Duke Nukem's menu title is getting rendered.
2019-11-22 22:52:11 +01:00

182 lines
4.9 KiB
C++

/*
** dobject.h
**
**---------------------------------------------------------------------------
** Copyright 1998-2008 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#ifndef __DOBJECT_H__
#define __DOBJECT_H__
#if 0
#include <stdlib.h>
struct PClass;
#define RUNTIME_TYPE(object) (object->GetClass()) // Passed an object, returns the type of that object
#define RUNTIME_CLASS(cls) (&cls::_StaticType) // Passed a class name, returns a PClass representing that class
#define NATIVE_TYPE(object) (object->StaticType()) // Passed an object, returns the type of the C++ class representing the object
struct ClassReg
{
PClass *MyClass;
const char *Name;
PClass *ParentType;
unsigned int SizeOf;
const size_t *Pointers;
void (*ConstructNative)(void *);
void RegisterClass() const;
};
enum EInPlace { EC_InPlace };
#define DECLARE_ABSTRACT_CLASS(cls,parent) \
public: \
static PClass _StaticType; \
virtual PClass *StaticType() const { return &_StaticType; } \
static ClassReg RegistrationInfo, *RegistrationInfoPtr; \
private: \
typedef parent Super; \
typedef cls ThisClass;
#define DECLARE_CLASS(cls,parent) \
DECLARE_ABSTRACT_CLASS(cls,parent) \
private: static void InPlaceConstructor (void *mem);
#if defined(_MSC_VER)
# pragma data_seg(".creg$u")
# pragma data_seg()
# define _DECLARE_TI(cls) __declspec(allocate(".creg$u")) ClassReg *cls::RegistrationInfoPtr = &cls::RegistrationInfo;
#else
# define _DECLARE_TI(cls) ClassReg *cls::RegistrationInfoPtr __attribute__((section(SECTION_CREG))) = &cls::RegistrationInfo;
#endif
#define _IMP_PCLASS(cls,ptrs,create) \
PClass cls::_StaticType; \
ClassReg cls::RegistrationInfo = {\
RUNTIME_CLASS(cls), \
#cls, \
RUNTIME_CLASS(cls::Super), \
sizeof(cls), \
ptrs, \
create }; \
_DECLARE_TI(cls)
#define _IMP_CREATE_OBJ(cls) \
void cls::InPlaceConstructor(void *mem) { new((EInPlace *)mem) cls; }
#define IMPLEMENT_CLASS(cls) \
_IMP_CREATE_OBJ(cls) \
_IMP_PCLASS(cls,NULL,cls::InPlaceConstructor)
#define IMPLEMENT_ABSTRACT_CLASS(cls) \
_IMP_PCLASS(cls,NULL,NULL)
class DObject
{
public:
static PClass _StaticType;
virtual PClass *StaticType() const { return &_StaticType; }
static ClassReg RegistrationInfo, *RegistrationInfoPtr;
static void InPlaceConstructor (void *mem);
private:
typedef DObject ThisClass;
// Per-instance variables. There are four.
private:
PClass *Class; // This object's type
public:
public:
DObject ();
DObject (PClass *inClass);
virtual ~DObject();
inline bool IsKindOf (const PClass *base);
inline bool IsA (const PClass *type);
virtual void Destroy ();
PClass *GetClass() const
{
if (Class == NULL)
{
// Save a little time the next time somebody wants this object's type
// by recording it now.
const_cast<DObject *>(this)->Class = StaticType();
}
return Class;
}
void SetClass (PClass *inClass)
{
Class = inClass;
}
void* operator new(size_t p)
{
return malloc(p);
}
void operator delete (void* mem)
{
free(mem);
}
protected:
// This form of placement new and delete is for use *only* by PClass's
// CreateNew() method. Do not use them for some other purpose.
void *operator new(size_t, EInPlace *mem)
{
return (void *)mem;
}
void operator delete (void *mem, EInPlace *)
{
free (mem);
}
};
#include "dobjtype.h"
inline bool DObject::IsKindOf (const PClass *base)
{
return base->IsAncestorOf (GetClass ());
}
inline bool DObject::IsA (const PClass *type)
{
return (type == GetClass());
}
#endif
#endif //__DOBJECT_H__