enumset.h

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00001 /*
00002 ******************************************************************************
00003 *
00004 *   Copyright (C) 2012, International Business Machines
00005 *   Corporation and others.  All Rights Reserved.
00006 *
00007 ******************************************************************************
00008 */
00009 
00015 #ifndef ENUMSET_H
00016 #define ENUMSET_H
00017 
00018 #include "unicode/utypes.h"
00019 
00020 #if U_SHOW_CPLUSPLUS_API
00021 
00022 U_NAMESPACE_BEGIN
00023 
00029 template<typename T, uint32_t minValue, uint32_t limitValue>
00030 class EnumSet {
00031 public:
00032     inline EnumSet() : fBools(0) {}
00033     inline EnumSet(const EnumSet<T,minValue,limitValue>& other) : fBools(other.fBools) {}
00034     inline ~EnumSet() {}
00035     inline void clear() { fBools=0; }
00036     inline void add(T toAdd) { set(toAdd, 1); }
00037     inline void remove(T toRemove) { set(toRemove, 0); }
00038     inline int32_t contains(T toCheck) const { return get(toCheck); }
00039     inline void set(T toSet, int32_t v) { fBools=(fBools&(~flag(toSet)))|(v?(flag(toSet)):0); }
00040     inline int32_t get(T toCheck) const { return (fBools & flag(toCheck))?1:0; }
00041     inline UBool isValidEnum(T toCheck) const {  return (toCheck>=minValue&&toCheck<limitValue); }
00042     inline UBool isValidValue(int32_t v) const { return (v==0||v==1); }
00043     inline const EnumSet<T,minValue,limitValue>& operator=(const EnumSet<T,minValue,limitValue>& other) {
00044         fBools = other.fBools;
00045         return *this;
00046     }
00047   
00048     inline uint32_t getAll() const {
00049         return fBools; 
00050     }
00051 
00052 private:
00053     inline uint32_t flag(T toCheck) const { return (1<<(toCheck-minValue)); }
00054 private:
00055     uint32_t fBools;
00056 };
00057 
00058 U_NAMESPACE_END
00059 
00060 #endif /* U_SHOW_CPLUSPLUS_API */
00061 #endif /* ENUMSET_H */

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