mirror of
https://github.com/godotengine/godot.git
synced 2025-11-03 23:21:15 +00:00
390 lines
8.1 KiB
C++
390 lines
8.1 KiB
C++
/*************************************************************************/
|
|
/* reference.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* http://www.godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
#ifndef REFERENCE_H
|
|
#define REFERENCE_H
|
|
|
|
#include "object.h"
|
|
#include "safe_refcount.h"
|
|
#include "ref_ptr.h"
|
|
#include "object_type_db.h"
|
|
|
|
/**
|
|
@author Juan Linietsky <reduzio@gmail.com>
|
|
*/
|
|
class Reference : public Object{
|
|
|
|
OBJ_TYPE( Reference, Object );
|
|
friend class RefBase;
|
|
SafeRefCount refcount;
|
|
SafeRefCount refcount_init;
|
|
protected:
|
|
|
|
static void _bind_methods();
|
|
public:
|
|
|
|
|
|
_FORCE_INLINE_ bool is_referenced() const { return refcount_init.get()<1; }
|
|
bool init_ref();
|
|
void reference();
|
|
bool unreference();
|
|
int reference_get_count() const;
|
|
|
|
Reference();
|
|
~Reference();
|
|
};
|
|
|
|
#if 0
|
|
class RefBase {
|
|
protected:
|
|
void ref_inc(Reference *p_reference);
|
|
bool ref_dec(Reference *p_reference);
|
|
Reference *first_ref(Reference *p_reference);
|
|
Reference * get_reference_from_ref(const RefBase &p_base);
|
|
virtual Reference * get_reference() const=0;
|
|
char * get_refptr_data(const RefPtr &p_refptr) const;
|
|
public:
|
|
|
|
virtual ~RefBase() {}
|
|
};
|
|
#endif
|
|
|
|
template<class T>
|
|
class Ref {
|
|
|
|
T *reference;
|
|
|
|
void ref( const Ref& p_from ) {
|
|
|
|
if (p_from.reference==reference)
|
|
return;
|
|
|
|
unref();
|
|
|
|
reference=p_from.reference;
|
|
if (reference)
|
|
reference->reference();
|
|
}
|
|
|
|
void ref_pointer( T* p_ref ) {
|
|
|
|
ERR_FAIL_COND(!p_ref);
|
|
|
|
if (p_ref->init_ref())
|
|
reference=p_ref;
|
|
}
|
|
|
|
//virtual Reference * get_reference() const { return reference; }
|
|
public:
|
|
|
|
|
|
_FORCE_INLINE_ bool operator<(const Ref<T>& p_r) const {
|
|
|
|
return reference<p_r.reference;
|
|
}
|
|
_FORCE_INLINE_ bool operator==(const Ref<T>& p_r) const {
|
|
|
|
return reference==p_r.reference;
|
|
}
|
|
_FORCE_INLINE_ bool operator!=(const Ref<T>& p_r) const {
|
|
|
|
return reference!=p_r.reference;
|
|
}
|
|
|
|
_FORCE_INLINE_ T* operator->() {
|
|
|
|
return reference;
|
|
}
|
|
|
|
_FORCE_INLINE_ T* operator*() {
|
|
|
|
return reference;
|
|
}
|
|
|
|
_FORCE_INLINE_ const T* operator->() const {
|
|
|
|
return reference;
|
|
}
|
|
|
|
_FORCE_INLINE_ const T* ptr() const {
|
|
|
|
return reference;
|
|
}
|
|
_FORCE_INLINE_ T* ptr() {
|
|
|
|
return reference;
|
|
}
|
|
|
|
_FORCE_INLINE_ const T* operator*() const {
|
|
|
|
return reference;
|
|
}
|
|
|
|
RefPtr get_ref_ptr() const {
|
|
|
|
RefPtr refptr;
|
|
Ref<Reference> * irr = reinterpret_cast<Ref<Reference>*>( refptr.get_data() );
|
|
*irr = *this;
|
|
return refptr;
|
|
};
|
|
|
|
#if 0
|
|
// go to RefPtr
|
|
operator RefPtr() const {
|
|
|
|
return get_ref_ptr();
|
|
}
|
|
#endif
|
|
|
|
#if 1
|
|
operator Variant() const {
|
|
|
|
return Variant( get_ref_ptr() );
|
|
}
|
|
#endif
|
|
|
|
void operator=( const Ref& p_from ) {
|
|
|
|
ref(p_from);
|
|
}
|
|
|
|
template<class T_Other>
|
|
void operator=( const Ref<T_Other>& p_from ) {
|
|
|
|
Reference *refb = const_cast<Reference*>(static_cast<const Reference*>(p_from.ptr()));
|
|
if (!refb) {
|
|
unref();
|
|
return;
|
|
}
|
|
Ref r;
|
|
r.reference=refb->cast_to<T>();
|
|
ref(r);
|
|
r.reference=NULL;
|
|
}
|
|
|
|
void operator=( const RefPtr& p_refptr ) {
|
|
|
|
Ref<Reference> * irr = reinterpret_cast<Ref<Reference>*>( p_refptr.get_data() );
|
|
Reference *refb = irr->ptr();
|
|
if (!refb) {
|
|
unref();
|
|
return;
|
|
}
|
|
Ref r;
|
|
r.reference=refb->cast_to<T>();
|
|
ref(r);
|
|
r.reference=NULL;
|
|
}
|
|
|
|
|
|
void operator=( const Variant& p_variant ) {
|
|
|
|
RefPtr refptr=p_variant;
|
|
Ref<Reference> * irr = reinterpret_cast<Ref<Reference>*>( refptr.get_data() );
|
|
Reference *refb = irr->ptr();
|
|
if (!refb) {
|
|
unref();
|
|
return;
|
|
}
|
|
Ref r;
|
|
r.reference=refb->cast_to<T>();
|
|
ref(r);
|
|
r.reference=NULL;
|
|
}
|
|
|
|
Ref( const Ref& p_from ) {
|
|
|
|
reference=NULL;
|
|
ref(p_from);
|
|
}
|
|
|
|
template<class T_Other>
|
|
Ref( const Ref<T_Other>& p_from ) {
|
|
|
|
reference=NULL;
|
|
Reference *refb = const_cast<Reference*>(static_cast<const Reference*>(p_from.ptr()));
|
|
if (!refb) {
|
|
unref();
|
|
return;
|
|
}
|
|
Ref r;
|
|
r.reference=refb->cast_to<T>();
|
|
ref(r);
|
|
r.reference=NULL;
|
|
}
|
|
|
|
Ref( T* p_reference ) {
|
|
|
|
if (p_reference)
|
|
ref_pointer(p_reference);
|
|
else
|
|
reference=NULL;
|
|
}
|
|
|
|
Ref( const Variant& p_variant) {
|
|
|
|
RefPtr refptr=p_variant;
|
|
Ref<Reference> * irr = reinterpret_cast<Ref<Reference>*>( refptr.get_data() );
|
|
reference=NULL;
|
|
Reference *refb = irr->ptr();
|
|
if (!refb) {
|
|
unref();
|
|
return;
|
|
}
|
|
Ref r;
|
|
r.reference=refb->cast_to<T>();
|
|
ref(r);
|
|
r.reference=NULL;
|
|
}
|
|
|
|
|
|
|
|
Ref( const RefPtr& p_refptr) {
|
|
|
|
Ref<Reference> * irr = reinterpret_cast<Ref<Reference>*>( p_refptr.get_data() );
|
|
reference=NULL;
|
|
Reference *refb = irr->ptr();
|
|
if (!refb) {
|
|
unref();
|
|
return;
|
|
}
|
|
Ref r;
|
|
r.reference=refb->cast_to<T>();
|
|
ref(r);
|
|
r.reference=NULL;
|
|
}
|
|
|
|
inline bool is_valid() const { return reference!=NULL; }
|
|
inline bool is_null() const { return reference==NULL; }
|
|
|
|
void unref() {
|
|
//TODO this should be moved to mutexes, since this engine does not really
|
|
// do a lot of referencing on references and stuff
|
|
// mutexes will avoid more crashes?
|
|
|
|
if (reference && reference->unreference()) {
|
|
|
|
memdelete(reference);
|
|
}
|
|
reference=NULL;
|
|
}
|
|
|
|
void instance() {
|
|
ref( memnew( T ));
|
|
}
|
|
|
|
Ref() {
|
|
|
|
reference=NULL;
|
|
}
|
|
|
|
~Ref() {
|
|
|
|
unref();
|
|
}
|
|
|
|
};
|
|
|
|
typedef Ref<Reference> REF;
|
|
|
|
|
|
class WeakRef : public Reference {
|
|
|
|
OBJ_TYPE(WeakRef,Reference);
|
|
|
|
ObjectID ref;
|
|
protected:
|
|
static void _bind_methods();
|
|
|
|
public:
|
|
Variant get_ref() const;
|
|
void set_obj(Object *p_object);
|
|
void set_ref(const REF& p_ref);
|
|
|
|
WeakRef();
|
|
};
|
|
|
|
#ifdef PTRCALL_ENABLED
|
|
|
|
template<class T>
|
|
struct PtrToArg< Ref<T> > {
|
|
|
|
_FORCE_INLINE_ static Ref<T> convert(const void* p_ptr) {
|
|
|
|
return Ref<T>(reinterpret_cast<const T*>(p_ptr));
|
|
}
|
|
|
|
_FORCE_INLINE_ static void encode(Ref<T> p_val,const void* p_ptr) {
|
|
|
|
*(Ref<Reference>*)p_ptr=p_val;
|
|
}
|
|
|
|
};
|
|
|
|
|
|
template<class T>
|
|
struct PtrToArg< const Ref<T>& > {
|
|
|
|
_FORCE_INLINE_ static Ref<T> convert(const void* p_ptr) {
|
|
|
|
return Ref<T>(reinterpret_cast<const T*>(p_ptr));
|
|
}
|
|
|
|
};
|
|
|
|
|
|
//this is for RefPtr
|
|
|
|
template<>
|
|
struct PtrToArg< RefPtr > {
|
|
|
|
_FORCE_INLINE_ static RefPtr convert(const void* p_ptr) {
|
|
|
|
return Ref<Reference>(reinterpret_cast<const Reference*>(p_ptr)).get_ref_ptr();
|
|
}
|
|
|
|
_FORCE_INLINE_ static void encode(RefPtr p_val,const void* p_ptr) {
|
|
|
|
Ref<Reference> r = p_val;
|
|
*(Ref<Reference>*)p_ptr=r;
|
|
}
|
|
|
|
};
|
|
|
|
template<>
|
|
struct PtrToArg< const RefPtr& > {
|
|
|
|
_FORCE_INLINE_ static RefPtr convert(const void* p_ptr) {
|
|
|
|
return Ref<Reference>(reinterpret_cast<const Reference*>(p_ptr)).get_ref_ptr();
|
|
}
|
|
|
|
};
|
|
|
|
#endif
|
|
#endif // REFERENCE_H
|