mi32/elemtypeset.h

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#ifndef  INC_MI32_ELEMTYPESET_H
#define  INC_MI32_ELEMTYPESET_H

#ifndef  INC_MI32_ELEMTYPE_H
#include <mi32/elemtype.h>
#endif

#ifndef  INC_MEMORY_H
#include <memory.h>     // Includes defn for memset()
#define  INC_MEMORY_H
#endif

class ELEMTYPESET {
   public:

      ELEMTYPESET (
         ) { Clear(); }

      ELEMTYPESET (
         ELEMTYPE elemtype
         ) { Clear(); operator+=(elemtype); }

      ELEMTYPESET (
         ELEMTYPE elemtype1,
         ELEMTYPE elemtype2
         ) { Clear(); operator+=(elemtype1); operator+=(elemtype2); }

      ELEMTYPESET (
         ELEMTYPE elemtype1,
         ELEMTYPE elemtype2,
         ELEMTYPE elemtype3
         ) { Clear(); operator+=(elemtype1); operator+=(elemtype2); operator+=(elemtype3); }

      ELEMTYPESET& operator+= (
         ELEMTYPE rhs
         ) { if (rhs == ELEMTYPE_NumTypes) SetAll(); else m_elemtypebits[rhs/32] |= 1 << (rhs % 32); return (*this); }

      ELEMTYPESET& operator+= (
         const ELEMTYPESET& rhs
         ) { for (INT32 i = 0;(i < (ELEMTYPE_NumTypes+31)/32);++i) m_elemtypebits[i] |= rhs.m_elemtypebits[i]; return (*this); }

      ELEMTYPESET& operator-= (
         ELEMTYPE rhs
         ) { if (rhs == ELEMTYPE_NumTypes) Clear(); else m_elemtypebits[rhs/32] &= ~(1 << (rhs % 32)); return (*this); }

      void Clear (
         ) { memset(m_elemtypebits,0,sizeof(m_elemtypebits)); return; }

      bool Contains (
         ELEMTYPE elemtype
         ) const { return ((m_elemtypebits[elemtype/32] & (1 << (elemtype % 32))) != 0); }

      ELEMTYPE GetFirst (
         ) const { return (GetNext(ELEMTYPE_Empty)); }

      ELEMTYPE GetNext (
         ELEMTYPE elemtype
         ) const {
         do {
            ++elemtype;
            if (Contains(elemtype)) break;
            } while (elemtype < ELEMTYPE_NumTypes);
         return (elemtype);
         }

      void SetAll (
         ) { memset(m_elemtypebits,255,sizeof(m_elemtypebits)); return; }

   private:
      #ifndef GENERATING_DOXYGEN_OUTPUT
      UINT32 m_elemtypebits[(ELEMTYPE_NumTypes+31)/32];
      #endif // GENERATING_DOXYGEN_OUTPUT
   };


#endif   

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