67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
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/******************************************************************
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**
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** IQUEUE.H:
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**
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** ADT Queue Iterator Implementation
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**
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** This file is part of Apt Abstract Data Types (ADT)
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** Copyright (c) 1991 -- Apt Technologies
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** All rights reserved
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**
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******************************************************************/
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#ifndef IQUEUE_H
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#define IQUEUE_H
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/* ---------- Headers */
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#include "pqueue.h"
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/* ---------- Types */
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typedef struct _QueueIterator {
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int position;
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Queue queue;
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QueueItem currentItem, previousItem;
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} _QueueIterator, *QueueIterator;
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/* ---------- Exported Function Prototypes */
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#ifdef __ANSI_C__
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QueueIterator QueueIteratorNew(Queue,int);
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void QueueIteratorDispose(QueueIterator);
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int QueueIteratorAtTop(QueueIterator);
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int QueueIteratorAtBottom(QueueIterator);
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int QueueIteratorAtPosition(QueueIterator,int);
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int QueueIteratorPosition(QueueIterator);
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void *QueueIteratorCurrentData(QueueIterator);
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void *QueueIteratorPreviousData(QueueIterator);
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void QueueIteratorAdvance(QueueIterator);
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void QueueIteratorBackup(QueueIterator);
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void QueueIteratorAbsoluteSeek(QueueIterator,int);
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void QueueIteratorRelativeSeek(QueueIterator,int);
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#else
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QueueIterator QueueIteratorNew();
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void QueueIteratorDispose();
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int QueueIteratorAtTop();
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int QueueIteratorAtBottom();
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int QueueIteratorAtPosition();
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int QueueIteratorPosition();
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void *QueueIteratorCurrentData();
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void *QueueIteratorPreviousData();
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void QueueIteratorAdvance();
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void QueueIteratorBackup();
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void QueueIteratorAbsoluteSeek();
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void QueueIteratorRelativeSeek();
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#endif /* __ANSI_C__ */
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#endif /* QUEUE_H */
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