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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _MORKOBJECT_
#define _MORKOBJECT_ 1
#ifndef _MORK_
# include "mork.h"
#endif
#ifndef _MORKNODE_
# include "morkNode.h"
#endif
#ifndef _MORKBEAD_
# include "morkBead.h"
#endif
#ifndef _MORKCONFIG_
# include "morkConfig.h"
#endif
#ifndef _ORKINHEAP_
# include "orkinHeap.h"
#endif
// 456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
#define morkDerived_kObject /*i*/ 0x6F42 /* ascii 'oB' */
/*| morkObject: subclass of morkNode that adds knowledge of db suite factory
**| and containing port to those objects that are exposed as instances of
**| nsIMdbObject in the public interface.
|*/
class morkObject : public morkBead, public nsIMdbObject {
// public: // slots inherited from morkNode (meant to inform only)
// nsIMdbHeap* mNode_Heap;
// mork_base mNode_Base; // must equal morkBase_kNode
// mork_derived mNode_Derived; // depends on specific node subclass
// mork_access mNode_Access; // kOpen, kClosing, kShut, or kDead
// mork_usage mNode_Usage; // kHeap, kStack, kMember, kGlobal, kNone
// mork_able mNode_Mutable; // can this node be modified?
// mork_load mNode_Load; // is this node clean or dirty?
// mork_uses mNode_Uses; // refcount for strong refs
// mork_refs mNode_Refs; // refcount for strong refs + weak refs
// mork_color mBead_Color; // ID for this bead
public: // state is public because the entire Mork system is private
morkHandle* mObject_Handle; // weak ref to handle for this object
morkEnv* mMorkEnv; // weak ref to environment this object created in.
// { ===== begin morkNode interface =====
public:
virtual void CloseMorkNode(
morkEnv* ev) override; // CloseObject() only if open
#ifdef MORK_DEBUG_HEAP_STATS
void operator delete(void* ioAddress, size_t size) {
mork_u4* array = (mork_u4*)ioAddress;
array -= 3;
orkinHeap* heap = (orkinHeap*)*array;
if (heap) heap->Free(nullptr, ioAddress);
}
#endif
NS_DECL_ISUPPORTS
// { ----- begin attribute methods -----
NS_IMETHOD IsFrozenMdbObject(nsIMdbEnv* ev, mdb_bool* outIsReadonly) override;
// same as nsIMdbPort::GetIsPortReadonly() when this object is inside a port.
// } ----- end attribute methods -----
// { ----- begin factory methods -----
NS_IMETHOD GetMdbFactory(nsIMdbEnv* ev, nsIMdbFactory** acqFactory) override;
// } ----- end factory methods -----
// { ----- begin ref counting for well-behaved cyclic graphs -----
NS_IMETHOD GetWeakRefCount(nsIMdbEnv* ev, // weak refs
mdb_count* outCount) override;
NS_IMETHOD GetStrongRefCount(nsIMdbEnv* ev, // strong refs
mdb_count* outCount) override;
NS_IMETHOD AddWeakRef(nsIMdbEnv* ev) override;
#ifndef _MSC_VER
// The first declaration of AddStrongRef is to suppress
// -Werror,-Woverloaded-virtual.
NS_IMETHOD_(mork_uses) AddStrongRef(morkEnv* ev) override;
#endif
NS_IMETHOD_(mork_uses) AddStrongRef(nsIMdbEnv* ev) override;
NS_IMETHOD CutWeakRef(nsIMdbEnv* ev) override;
#ifndef _MSC_VER
// The first declaration of CutStrongRef is to suppress
// -Werror,-Woverloaded-virtual.
NS_IMETHOD_(mork_uses) CutStrongRef(morkEnv* ev) override;
#endif
NS_IMETHOD CutStrongRef(nsIMdbEnv* ev) override;
NS_IMETHOD CloseMdbObject(
nsIMdbEnv* ev) override; // called at strong refs zero
NS_IMETHOD IsOpenMdbObject(nsIMdbEnv* ev, mdb_bool* outOpen) override;
// } ----- end ref counting -----
protected: // special case construction of first env without preceding env
morkObject(const morkUsage& inUsage, nsIMdbHeap* ioHeap,
mork_color inBeadColor);
virtual ~morkObject(); // assert that CloseObject() executed earlier
public: // morkEnv construction & destruction
morkObject(morkEnv* ev, const morkUsage& inUsage, nsIMdbHeap* ioHeap,
mork_color inBeadColor,
morkHandle* ioHandle); // ioHandle can be nil
void CloseObject(morkEnv* ev); // called by CloseMorkNode();
private: // copying is not allowed
morkObject(const morkObject& other);
morkObject& operator=(const morkObject& other);
public: // dynamic type identification
mork_bool IsObject() const {
return IsNode() && mNode_Derived == morkDerived_kObject;
}
// } ===== end morkNode methods =====
// void NewNilHandleError(morkEnv* ev); // mObject_Handle is nil
public: // typesafe refcounting inlines calling inherited morkNode methods
static void SlotWeakObject(morkObject* me, morkEnv* ev, morkObject** ioSlot) {
morkNode::SlotWeakNode((morkNode*)me, ev, (morkNode**)ioSlot);
}
static void SlotStrongObject(morkObject* me, morkEnv* ev,
morkObject** ioSlot) {
morkNode::SlotStrongNode((morkNode*)me, ev, (morkNode**)ioSlot);
}
};
// 456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
#endif /* _MORKOBJECT_ */
|
