69 lines
1.6 KiB
C++
69 lines
1.6 KiB
C++
//+-------------------------------------------------------------------------
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//
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// Copyright (C) 1991, Microsoft Corporation.
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//
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// File: XlatStat.hxx
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//
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// Contents: State translation class.
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//
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// Classes: CXlatState
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//
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// History: 01-20-92 KyleP Created
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//
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//--------------------------------------------------------------------------
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#pragma once
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#ifdef DISPLAY_INCLUDES
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#pragma message( "#include <" __FILE__ ">..." )
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#endif
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class CStateSet;
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//+-------------------------------------------------------------------------
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//
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// Class: CXlatState
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//
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// Purpose: Maps state set to single state.
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//
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// History: 20-Jan-92 KyleP Created
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//
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//--------------------------------------------------------------------------
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class CXlatState
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{
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public:
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CXlatState( UINT MaxState = 32 );
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~CXlatState();
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UINT XlatToOne( CStateSet const & ss );
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void XlatToMany( UINT iState, CStateSet & ss );
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private:
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void _Realloc();
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UINT _Search( CStateSet const & ss );
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UINT _Create( CStateSet const & ss );
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void _BuildState( ULONG * pState, CStateSet const & ss );
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//
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// Initial naive implementation: Just keep an array, where each
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// element is wide enough to contain 1 bit per possible state.
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//
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// The first state set in _pulStates is used as temporary space
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// during search.
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//
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UINT _StateSize; // # DWords / state
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ULONG * _pulStates; // Pointer to states
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UINT _cStates; // Size (in states) of pulStates
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UINT _cUsed; // Number of states in use.
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};
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