mirror of https://github.com/OpenTTD/OpenTTD.git
69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
/* $Id$ */
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#include "stdafx.h"
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#include "openttd.h"
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#include "engine.h"
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#include <new>
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#include "yapf/blob.hpp"
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/* Engine list manipulators - current implementation is only C wrapper around CBlobT<EngineID> (see yapf/blob.hpp) */
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/* we cannot expose CBlobT directly to C so we must cast EngineList* to CBlobT<EngineID>* always when we are called from C */
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#define B (*(CBlobT<EngineID>*)el)
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/** Create Engine List (and initialize it to empty) */
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void EngList_Create(EngineList *el)
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{
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// call CBlobT constructor explicitly
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new (&B) CBlobT<EngineID>();
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}
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/** Destroy Engine List (and free its contents) */
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void EngList_Destroy(EngineList *el)
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{
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// call CBlobT destructor explicitly
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B.~CBlobT<EngineID>();
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}
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/** Return number of items stored in the Engine List */
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uint EngList_Count(const EngineList *el)
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{
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return B.Size();
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}
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/** Add new item at the end of Engine List */
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void EngList_Add(EngineList *el, EngineID eid)
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{
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B.Append(eid);
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}
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/** Return pointer to the items array held by Engine List */
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EngineID* EngList_Items(EngineList *el)
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{
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return B.Data();
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}
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/** Clear the Engine List (by invalidating all its items == reseting item count to zero) */
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void EngList_RemoveAll(EngineList *el)
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{
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B.Clear();
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}
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/** Sort all items using qsort() and given 'CompareItems' function */
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void EngList_Sort(EngineList *el, EngList_SortTypeFunction compare)
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{
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qsort(B.Data(), B.Size(), sizeof(**el), compare);
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}
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/** Sort selected range of items (on indices @ <begin, begin+num_items-1>) */
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void EngList_SortPartial(EngineList *el, EngList_SortTypeFunction compare, uint begin, uint num_items)
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{
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assert(begin <= (uint)B.Size());
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assert(begin + num_items <= (uint)B.Size());
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qsort(B.Data() + begin, num_items, sizeof(**el), compare);
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}
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#undef B
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