michael@0: /*
michael@0: ******************************************************************************
michael@0: *
michael@0: *   Copyright (C) 2012, International Business Machines
michael@0: *   Corporation and others.  All Rights Reserved.
michael@0: *
michael@0: ******************************************************************************
michael@0: */
michael@0: 
michael@0: /**
michael@0:  * \file
michael@0:  * \brief C++: internal template EnumSet<>
michael@0:  */
michael@0: 
michael@0: #ifndef ENUMSET_H
michael@0: #define ENUMSET_H
michael@0: 
michael@0: #include "unicode/utypes.h"
michael@0: 
michael@0: #if U_SHOW_CPLUSPLUS_API
michael@0: 
michael@0: U_NAMESPACE_BEGIN
michael@0: 
michael@0: /**
michael@0:  * enum bitset for boolean fields. Similar to Java EnumSet<>. 
michael@0:  * Needs to range check.
michael@0:  * @internal
michael@0:  */
michael@0: template<typename T, uint32_t minValue, uint32_t limitValue>
michael@0: class EnumSet {
michael@0: public:
michael@0:     inline EnumSet() : fBools(0) {}
michael@0:     inline EnumSet(const EnumSet<T,minValue,limitValue>& other) : fBools(other.fBools) {}
michael@0:     inline ~EnumSet() {}
michael@0:     inline void clear() { fBools=0; }
michael@0:     inline void add(T toAdd) { set(toAdd, 1); }
michael@0:     inline void remove(T toRemove) { set(toRemove, 0); }
michael@0:     inline int32_t contains(T toCheck) const { return get(toCheck); }
michael@0:     inline void set(T toSet, int32_t v) { fBools=(fBools&(~flag(toSet)))|(v?(flag(toSet)):0); }
michael@0:     inline int32_t get(T toCheck) const { return (fBools & flag(toCheck))?1:0; }
michael@0:     inline UBool isValidEnum(T toCheck) const {  return (toCheck>=minValue&&toCheck<limitValue); }
michael@0:     inline UBool isValidValue(int32_t v) const { return (v==0||v==1); }
michael@0:     inline const EnumSet<T,minValue,limitValue>& operator=(const EnumSet<T,minValue,limitValue>& other) {
michael@0:         fBools = other.fBools;
michael@0:         return *this;
michael@0:     }
michael@0:   
michael@0:     inline uint32_t getAll() const {
michael@0:         return fBools; 
michael@0:     }
michael@0: 
michael@0: private:
michael@0:     inline uint32_t flag(T toCheck) const { return (1<<(toCheck-minValue)); }
michael@0: private:
michael@0:     uint32_t fBools;
michael@0: };
michael@0: 
michael@0: U_NAMESPACE_END
michael@0: 
michael@0: #endif /* U_SHOW_CPLUSPLUS_API */
michael@0: #endif /* ENUMSET_H */