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289 lines
9.1 KiB
C
289 lines
9.1 KiB
C
/*****************************************************************************/
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/* */
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/* coll.h */
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/* */
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/* Collection (dynamic array) */
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/* */
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/* */
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/* */
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/* (C) 2000-2001 Ullrich von Bassewitz */
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/* Wacholderweg 14 */
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/* D-70597 Stuttgart */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef COLL_H
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#define COLL_H
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/* common */
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#include "attrib.h"
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#include "check.h"
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#include "inline.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* An array of pointers that grows if needed */
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typedef struct Collection Collection;
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struct Collection {
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unsigned Count; /* Number of items in the list */
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unsigned Size; /* Size of allocated array */
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void** Items; /* Array with dynamic size */
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};
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/* An empty collection */
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extern const Collection EmptyCollection;
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/* Initializer for static collections */
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#define STATIC_COLLECTION_INITIALIZER { 0, 0, 0 }
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/* Initializer for auto collections */
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#define AUTO_COLLECTION_INITIALIZER EmptyCollection;
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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Collection* InitCollection (Collection* C);
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/* Initialize a collection and return it. */
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void DoneCollection (Collection* C);
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/* Free the data for a collection. This will not free the data contained in
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* the collection.
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*/
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Collection* NewCollection (void);
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/* Create and return a new collection */
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void FreeCollection (Collection* C);
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/* Free a collection */
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#if defined(HAVE_INLINE)
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INLINE unsigned CollCount (const Collection* C)
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/* Return the number of items in the collection */
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{
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return C->Count;
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}
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#else
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# define CollCount(C) (C)->Count
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#endif
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void CollInsert (Collection* C, void* Item, unsigned Index);
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/* Insert the data at the given position in the collection */
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#if defined(HAVE_INLINE)
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INLINE void CollAppend (Collection* C, void* Item)
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/* Append an item to the end of the collection */
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{
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/* Insert the item at the end of the current list */
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CollInsert (C, Item, C->Count);
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}
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#else
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void CollAppend (Collection* C, void* Item);
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/* Append an item to the end of the collection */
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#endif
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#if defined(HAVE_INLINE)
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INLINE void* CollAt (Collection* C, unsigned Index)
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/* Return the item at the given index */
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{
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/* Check the index */
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PRECONDITION (Index < C->Count);
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/* Return the element */
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return C->Items[Index];
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}
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#else
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void* CollAt (Collection* C, unsigned Index);
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/* Return the item at the given index */
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#endif
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#if defined(HAVE_INLINE)
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INLINE void* CollAtUnchecked (Collection* C, unsigned Index)
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/* Return the item at the given index */
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{
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/* Return the element */
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return C->Items[Index];
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}
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#else
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# define CollAtUnchecked(C, Index) ((C)->Items[(Index)])
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#endif
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#if defined(HAVE_INLINE)
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INLINE const void* CollConstAt (const Collection* C, unsigned Index)
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/* Return the item at the given index */
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{
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/* Check the index */
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PRECONDITION (Index < C->Count);
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/* Return the element */
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return C->Items[Index];
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}
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#else
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const void* CollConstAt (const Collection* C, unsigned Index);
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/* Return the item at the given index */
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#endif
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#if defined(HAVE_INLINE)
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INLINE void* CollLast (Collection* C)
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/* Return the last item in a collection */
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{
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/* We must have at least one entry */
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PRECONDITION (C->Count > 0);
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/* Return the element */
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return C->Items[C->Count-1];
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}
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#else
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void* CollLast (Collection* C);
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/* Return the last item in a collection */
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#endif
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#if defined(HAVE_INLINE)
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INLINE const void* CollConstLast (const Collection* C)
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/* Return the last item in a collection */
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{
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/* We must have at least one entry */
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PRECONDITION (C->Count > 0);
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/* Return the element */
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return C->Items[C->Count-1];
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}
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#else
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const void* CollConstLast (const Collection* C);
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/* Return the last item in a collection */
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#endif
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#if defined(HAVE_INLINE)
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INLINE void* CollPop (Collection* C)
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/* Remove the last segment from the stack and return it. Calls FAIL if the
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* collection is empty.
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*/
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{
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/* We must have at least one entry */
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PRECONDITION (C->Count > 0);
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/* Return the element */
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return C->Items[--C->Count];
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}
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#else
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void* CollPop (Collection* C);
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/* Remove the last segment from the stack and return it. Calls FAIL if the
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* collection is empty.
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*/
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#endif
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int CollIndex (Collection* C, const void* Item);
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/* Return the index of the given item in the collection. Return -1 if the
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* item was not found in the collection.
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*/
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void CollDelete (Collection* C, unsigned Index);
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/* Remove the item with the given index from the collection. This will not
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* free the item itself, just the pointer. All items with higher indices
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* will get moved to a lower position.
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*/
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void CollDeleteItem (Collection* C, const void* Item);
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/* Delete the item pointer from the collection. The item must be in the
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* collection, otherwise FAIL will be called.
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*/
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#if defined(HAVE_INLINE)
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INLINE void CollDeleteAll (Collection* C)
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/* Delete all items from the given collection. This will not free the items
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* itself, it will only remove the pointers.
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*/
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{
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/* This one is easy... */
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C->Count = 0;
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}
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#else
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# define CollDeleteAll(C) ((C)->Count = 0)
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#endif
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#if defined(HAVE_INLINE)
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INLINE void CollReplace (Collection* C, void* Item, unsigned Index)
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/* Replace the item at the given position. The old item will not be freed,
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* just the pointer will get replaced.
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*/
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{
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/* Check the index */
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PRECONDITION (Index < C->Count);
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/* Replace the item pointer */
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C->Items[Index] = Item;
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}
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#else
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void CollReplace (Collection* C, void* Item, unsigned Index);
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/* Replace the item at the given position. The old item will not be freed,
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* just the pointer will get replaced.
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*/
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#endif
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void CollMove (Collection* C, unsigned OldIndex, unsigned NewIndex);
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/* Move an item from one position in the collection to another. OldIndex
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* is the current position of the item, NewIndex is the new index after
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* the function has done it's work. Existing entries with indices NewIndex
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* and up are moved one position upwards.
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*/
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void CollMoveMultiple (Collection* C, unsigned Start, unsigned Count, unsigned Target);
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/* Move a range of items from one position to another. Start is the index
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* of the first item to move, Count is the number of items and Target is
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* the index of the target item. The item with the index Start will later
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* have the index Target. All items with indices Target and above are moved
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* to higher indices.
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*/
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void CollSort (Collection* C,
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int (*Compare) (void*, const void*, const void*),
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void* Data);
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/* Sort the collection using the given compare function. The data pointer is
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* passed as *first* element to the compare function, it's not used by the
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* sort function itself. The other two pointer passed to the Compare function
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* are pointers to objects.
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*/
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/* End of coll.h */
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#endif
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