1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ 2 /* This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 #ifndef _MORKYARN_ 7 #define _MORKYARN_ 1 8 9 #ifndef _MORK_ 10 # include "mork.h" 11 #endif 12 13 // 456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789 14 15 #define morkDerived_kYarn /*i*/ 0x7952 /* ascii 'yR' */ 16 17 /*| morkYarn: a reference counted nsIMdbYarn C struct. This is for use in those 18 **| few cases where single instances of reference counted buffers are needed 19 **| in Mork, and we expect few enough instances that overhead is not a factor 20 **| in decided whether to use such a thing. 21 |*/ 22 class morkYarn : public morkNode { // refcounted yarn 23 24 // public: // slots inherited from morkNode (meant to inform only) 25 // nsIMdbHeap* mNode_Heap; 26 27 // mork_base mNode_Base; // must equal morkBase_kNode 28 // mork_derived mNode_Derived; // depends on specific node subclass 29 30 // mork_access mNode_Access; // kOpen, kClosing, kShut, or kDead 31 // mork_usage mNode_Usage; // kHeap, kStack, kMember, kGlobal, kNone 32 // mork_able mNode_Mutable; // can this node be modified? 33 // mork_load mNode_Load; // is this node clean or dirty? 34 35 // mork_uses mNode_Uses; // refcount for strong refs 36 // mork_refs mNode_Refs; // refcount for strong refs + weak refs 37 38 public: // state is public because the entire Mork system is private 39 mdbYarn mYarn_Body; 40 41 // { ===== begin morkNode interface ===== 42 public: // morkNode virtual methods 43 virtual void CloseMorkNode(morkEnv* ev) override; // CloseYarn() only if open 44 virtual ~morkYarn(); // assert that CloseYarn() executed earlier 45 46 public: // morkYarn construction & destruction 47 morkYarn(morkEnv* ev, const morkUsage& inUsage, nsIMdbHeap* ioHeap); 48 void CloseYarn(morkEnv* ev); // called by CloseMorkNode(); 49 50 private: // copying is not allowed 51 morkYarn(const morkYarn& other); 52 morkYarn& operator=(const morkYarn& other); 53 54 public: // dynamic type identification IsYarn()55 mork_bool IsYarn() const { 56 return IsNode() && mNode_Derived == morkDerived_kYarn; 57 } 58 // } ===== end morkNode methods ===== 59 60 public: // typing 61 static void NonYarnTypeError(morkEnv* ev); 62 63 public: // typesafe refcounting inlines calling inherited morkNode methods SlotWeakYarn(morkYarn * me,morkEnv * ev,morkYarn ** ioSlot)64 static void SlotWeakYarn(morkYarn* me, morkEnv* ev, morkYarn** ioSlot) { 65 morkNode::SlotWeakNode((morkNode*)me, ev, (morkNode**)ioSlot); 66 } 67 SlotStrongYarn(morkYarn * me,morkEnv * ev,morkYarn ** ioSlot)68 static void SlotStrongYarn(morkYarn* me, morkEnv* ev, morkYarn** ioSlot) { 69 morkNode::SlotStrongNode((morkNode*)me, ev, (morkNode**)ioSlot); 70 } 71 }; 72 73 // 456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789 74 75 #endif /* _MORKYARN_ */ 76