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/*************************************************************************/
/* rid.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* 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 RID_H
#define RID_H
#include "core/list.h"
#include "core/os/memory.h"
#include "core/safe_refcount.h"
#include "core/set.h"
#include "core/typedefs.h"
/**
@author Juan Linietsky <reduzio@gmail.com>
*/
class RID_OwnerBase;
class RID_Data {
friend class RID_OwnerBase;
#ifndef DEBUG_ENABLED
RID_OwnerBase *_owner;
#endif
uint32_t _id;
public:
_FORCE_INLINE_ uint32_t get_id() const { return _id; }
virtual ~RID_Data();
};
class RID {
friend class RID_OwnerBase;
mutable RID_Data *_data;
public:
_FORCE_INLINE_ RID_Data *get_data() const { return _data; }
_FORCE_INLINE_ bool operator==(const RID &p_rid) const {
return _data == p_rid._data;
}
_FORCE_INLINE_ bool operator<(const RID &p_rid) const {
return _data < p_rid._data;
}
_FORCE_INLINE_ bool operator<=(const RID &p_rid) const {
return _data <= p_rid._data;
}
_FORCE_INLINE_ bool operator>(const RID &p_rid) const {
return _data > p_rid._data;
}
_FORCE_INLINE_ bool operator!=(const RID &p_rid) const {
return _data != p_rid._data;
}
_FORCE_INLINE_ bool is_valid() const { return _data != NULL; }
_FORCE_INLINE_ uint32_t get_id() const { return _data ? _data->get_id() : 0; }
_FORCE_INLINE_ RID() {
_data = NULL;
}
};
class RID_OwnerBase {
protected:
static SafeRefCount refcount;
_FORCE_INLINE_ void _set_data(RID &p_rid, RID_Data *p_data) {
p_rid._data = p_data;
refcount.ref();
p_data->_id = refcount.get();
#ifndef DEBUG_ENABLED
p_data->_owner = this;
#endif
}
#ifndef DEBUG_ENABLED
_FORCE_INLINE_ bool _is_owner(const RID &p_rid) const {
return this == p_rid._data->_owner;
}
_FORCE_INLINE_ void _remove_owner(RID &p_rid) {
p_rid._data->_owner = NULL;
}
#endif
public:
virtual void get_owned_list(List<RID> *p_owned) = 0;
static void init_rid();
virtual ~RID_OwnerBase() {}
};
template <class T>
class RID_Owner : public RID_OwnerBase {
public:
#ifdef DEBUG_ENABLED
mutable Set<RID_Data *> id_map;
#endif
public:
_FORCE_INLINE_ RID make_rid(T *p_data) {
RID rid;
_set_data(rid, p_data);
#ifdef DEBUG_ENABLED
id_map.insert(p_data);
#endif
return rid;
}
_FORCE_INLINE_ T *get(const RID &p_rid) {
#ifdef DEBUG_ENABLED
ERR_FAIL_COND_V(!p_rid.is_valid(), NULL);
ERR_FAIL_COND_V(!id_map.has(p_rid.get_data()), NULL);
#endif
return static_cast<T *>(p_rid.get_data());
}
_FORCE_INLINE_ T *getornull(const RID &p_rid) {
#ifdef DEBUG_ENABLED
if (p_rid.get_data()) {
ERR_FAIL_COND_V(!id_map.has(p_rid.get_data()), NULL);
}
#endif
return static_cast<T *>(p_rid.get_data());
}
_FORCE_INLINE_ T *getptr(const RID &p_rid) {
return static_cast<T *>(p_rid.get_data());
}
_FORCE_INLINE_ bool owns(const RID &p_rid) const {
if (p_rid.get_data() == NULL)
return false;
#ifdef DEBUG_ENABLED
return id_map.has(p_rid.get_data());
#else
return _is_owner(p_rid);
#endif
}
void free(RID p_rid) {
#ifdef DEBUG_ENABLED
id_map.erase(p_rid.get_data());
#else
_remove_owner(p_rid);
#endif
}
void get_owned_list(List<RID> *p_owned) {
#ifdef DEBUG_ENABLED
for (typename Set<RID_Data *>::Element *E = id_map.front(); E; E = E->next()) {
RID r;
_set_data(r, static_cast<T *>(E->get()));
p_owned->push_back(r);
}
#endif
}
};
#endif
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