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-rw-r--r--db/mork/src/morkCursor.h127
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diff --git a/db/mork/src/morkCursor.h b/db/mork/src/morkCursor.h
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+++ b/db/mork/src/morkCursor.h
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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 _MORKCURSOR_
+#define _MORKCURSOR_ 1
+
+#ifndef _MORK_
+#include "mork.h"
+#endif
+
+#ifndef _MORKOBJECT_
+#include "morkObject.h"
+#endif
+
+//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
+
+#define morkDerived_kCursor /*i*/ 0x4375 /* ascii 'Cu' */
+
+class morkCursor : public morkObject, public nsIMdbCursor{ // collection iterator
+
+// public: // slots inherited from morkObject (meant to inform only)
+ // nsIMdbHeap* mNode_Heap;
+ // mork_able mNode_Mutable; // can this node be modified?
+ // mork_load mNode_Load; // is this node clean or dirty?
+ // 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_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
+ // morkHandle* mObject_Handle; // weak ref to handle for this object
+
+public: // state is public because the entire Mork system is private
+ NS_DECL_ISUPPORTS_INHERITED
+
+ // { ----- 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 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 -----
+
+// } ===== end nsIMdbObject methods =====
+
+// { ===== begin nsIMdbCursor methods =====
+
+ // { ----- begin attribute methods -----
+ NS_IMETHOD GetCount(nsIMdbEnv* ev, mdb_count* outCount) override; // readonly
+ NS_IMETHOD GetSeed(nsIMdbEnv* ev, mdb_seed* outSeed) override; // readonly
+
+ NS_IMETHOD SetPos(nsIMdbEnv* ev, mdb_pos inPos) override; // mutable
+ NS_IMETHOD GetPos(nsIMdbEnv* ev, mdb_pos* outPos) override;
+
+ NS_IMETHOD SetDoFailOnSeedOutOfSync(nsIMdbEnv* ev, mdb_bool inFail) override;
+ NS_IMETHOD GetDoFailOnSeedOutOfSync(nsIMdbEnv* ev, mdb_bool* outFail) override;
+ // } ----- end attribute methods -----
+
+// } ===== end nsIMdbCursor methods =====
+
+ // } ----- end attribute methods -----
+
+ mork_seed mCursor_Seed;
+ mork_pos mCursor_Pos;
+ mork_bool mCursor_DoFailOnSeedOutOfSync;
+ mork_u1 mCursor_Pad[ 3 ]; // explicitly pad to u4 alignment
+
+// { ===== begin morkNode interface =====
+public: // morkNode virtual methods
+ virtual void CloseMorkNode(morkEnv* ev) override; // CloseCursor() only if open
+
+public: // morkCursor construction & destruction
+ morkCursor(morkEnv* ev, const morkUsage& inUsage, nsIMdbHeap* ioHeap);
+ void CloseCursor(morkEnv* ev); // called by CloseMorkNode();
+
+protected:
+ virtual ~morkCursor(); // assert that CloseCursor() executed earlier
+
+private: // copying is not allowed
+ morkCursor(const morkCursor& other);
+ morkCursor& operator=(const morkCursor& other);
+
+public: // dynamic type identification
+ mork_bool IsCursor() const
+ { return IsNode() && mNode_Derived == morkDerived_kCursor; }
+// } ===== end morkNode methods =====
+
+public: // other cursor methods
+
+public: // typesafe refcounting inlines calling inherited morkNode methods
+ static void SlotWeakCursor(morkCursor* me,
+ morkEnv* ev, morkCursor** ioSlot)
+ { morkNode::SlotWeakNode((morkNode*) me, ev, (morkNode**) ioSlot); }
+
+ static void SlotStrongCursor(morkCursor* me,
+ morkEnv* ev, morkCursor** ioSlot)
+ { morkNode::SlotStrongNode((morkNode*) me, ev, (morkNode**) ioSlot); }
+};
+
+//3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
+
+#endif /* _MORKCURSOR_ */