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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 _MORKYARN_
#define _MORKYARN_ 1
#ifndef _MORK_
#include "mork.h"
#endif
//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
#define morkDerived_kYarn /*i*/ 0x7952 /* ascii 'yR' */
/*| morkYarn: a reference counted nsIMdbYarn C struct. This is for use in those
**| few cases where single instances of reference counted buffers are needed
**| in Mork, and we expect few enough instances that overhead is not a factor
**| in decided whether to use such a thing.
|*/
class morkYarn : public morkNode { // refcounted yarn
// 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
public: // state is public because the entire Mork system is private
mdbYarn mYarn_Body;
// { ===== begin morkNode interface =====
public: // morkNode virtual methods
virtual void CloseMorkNode(morkEnv* ev) override; // CloseYarn() only if open
virtual ~morkYarn(); // assert that CloseYarn() executed earlier
public: // morkYarn construction & destruction
morkYarn(morkEnv* ev, const morkUsage& inUsage, nsIMdbHeap* ioHeap);
void CloseYarn(morkEnv* ev); // called by CloseMorkNode();
private: // copying is not allowed
morkYarn(const morkYarn& other);
morkYarn& operator=(const morkYarn& other);
public: // dynamic type identification
mork_bool IsYarn() const
{ return IsNode() && mNode_Derived == morkDerived_kYarn; }
// } ===== end morkNode methods =====
public: // typing
static void NonYarnTypeError(morkEnv* ev);
public: // typesafe refcounting inlines calling inherited morkNode methods
static void SlotWeakYarn(morkYarn* me,
morkEnv* ev, morkYarn** ioSlot)
{ morkNode::SlotWeakNode((morkNode*) me, ev, (morkNode**) ioSlot); }
static void SlotStrongYarn(morkYarn* me,
morkEnv* ev, morkYarn** ioSlot)
{ morkNode::SlotStrongNode((morkNode*) me, ev, (morkNode**) ioSlot); }
};
//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
#endif /* _MORKYARN_ */
|
