61 lines
1.4 KiB
C++
61 lines
1.4 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1991 - 1997.
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//
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// File: tstrhash.hxx
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//
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// Contents: CHashtable, a really simple hash table
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//
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// History: 2-Sep-97 dlee Created
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//
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//----------------------------------------------------------------------------
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//+---------------------------------------------------------------------------
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//
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// Class: CHashtable
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//
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// Purpose: Simple hash table, doesn't own the entries, not updatable
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//
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// History: 2-Sep-97 dlee Created
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//
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//----------------------------------------------------------------------------
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template<class T> class CHashtable
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{
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public:
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CHashtable( ULONG size = 71 ) : _aHead( size )
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{
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RtlZeroMemory( _aHead.GetPointer(), size * sizeof( T * ) );
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}
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T * Lookup( WCHAR const * pwc )
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{
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ULONG x = ( T::Hash( pwc ) % _aHead.Count() );
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T * p = _aHead[ x ];
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while ( 0 != p )
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{
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if ( 0 == p->Compare( pwc ) )
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return p;
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p = p->Next();
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}
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return 0;
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}
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void Add( T * p )
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{
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ULONG x = ( p->Hash() % _aHead.Count() );
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p->Next() = _aHead[ x ];
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_aHead[ x ] = p;
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}
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private:
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XArray<T *> _aHead;
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};
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