126 lines
1.8 KiB
C++
126 lines
1.8 KiB
C++
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/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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arrayit.hxx
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Abstract:
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This module contains the declaration for the ARRAY_ITERATOR class.
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ARRAY_ITERATOR is a concrete implementation derived from the abstarct
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ITERATOR class. It is used to 'read' (iterate) over an ARRAY object.
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It has no public constructor and therefore can only be queried from an
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ARRAY object. It is the client's responsibility to detsroy
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ARRAY_ITERATORs when they are done. ARRAY_ITERATORs maintain the currency
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for reading an ARRAY in order.
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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( _ARRAY_ITERATOR_ )
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#define _ARRAY_ITERATOR_
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#include "iterator.hxx"
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//
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// Forward references
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//
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DECLARE_CLASS( ARRAY );
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DECLARE_CLASS( ARRAY_ITERATOR );
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class ARRAY_ITERATOR : public ITERATOR {
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friend ARRAY;
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public:
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VIRTUAL
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~ARRAY_ITERATOR(
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);
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VIRTUAL
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VOID
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Reset(
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);
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VIRTUAL
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POBJECT
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GetCurrent(
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);
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VIRTUAL
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POBJECT
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GetNext(
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);
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VIRTUAL
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POBJECT
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GetPrevious(
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);
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NONVIRTUAL
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ULONG
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QueryCurrentIndex(
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);
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protected:
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DECLARE_CAST_MEMBER_FUNCTION( ARRAY_ITERATOR );
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DECLARE_CONSTRUCTOR( ARRAY_ITERATOR );
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NONVIRTUAL
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BOOLEAN
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Initialize(
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IN OUT PARRAY Array
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);
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NONVIRTUAL
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VOID
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Construct(
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);
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private:
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PARRAY _Array; // Array
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ULONG _CurrentIndex; // Current index
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};
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INLINE
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ULONG
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ARRAY_ITERATOR::QueryCurrentIndex(
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)
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/*++
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Routine Description:
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Obtains the current index
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Arguments:
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None
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Return Value:
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ULONG - The current index
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--*/
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{
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return _CurrentIndex;
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}
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#endif // _ARRAY_ITERATOR_
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