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78 lines
1.2 KiB
78 lines
1.2 KiB
/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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iterator.hxx
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Abstract:
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This module contains the declaration for the abstract ITERATOR class.
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ITERATORS are used to iterate over a CONTAINER allowing for multiple,
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simultaneous readers. ITERATORs maintain the currency needed to perform
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an iteration. This includes the current OBJECT in the CONTAINER and the
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currency needed to get the next or previous OBJECT. ITERATORs also
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provide the capability of wrapping when the end or begin of the container
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is reached.
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Author:
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David J. Gilman (davegi) 29-Oct-1990
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Environment:
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ULIB, User Mode
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--*/
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#if ! defined( _ITERATOR_ )
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#define _ITERATOR_
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DECLARE_CLASS( ITERATOR );
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class ITERATOR : public OBJECT {
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public:
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VIRTUAL
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~ITERATOR(
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);
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VIRTUAL
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POBJECT
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FindNext(
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IN PCOBJECT Key
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);
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VIRTUAL
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POBJECT
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GetCurrent(
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) PURE;
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VIRTUAL
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POBJECT
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GetNext(
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) PURE;
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VIRTUAL
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POBJECT
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GetPrevious(
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) PURE;
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VIRTUAL
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VOID
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Reset(
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) PURE;
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protected:
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DECLARE_CONSTRUCTOR( ITERATOR );
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};
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#endif // _ITERATOR_
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