jpayne@69: // © 2016 and later: Unicode, Inc. and others.
jpayne@69: // License & terms of use: http://www.unicode.org/copyright.html
jpayne@69: /*
jpayne@69: ******************************************************************************
jpayne@69: *
jpayne@69: *   Copyright (C) 2012,2014 International Business Machines
jpayne@69: *   Corporation and others.  All Rights Reserved.
jpayne@69: *
jpayne@69: ******************************************************************************
jpayne@69: */
jpayne@69: 
jpayne@69: /**
jpayne@69:  * \file
jpayne@69:  * \brief C++: internal template EnumSet<>
jpayne@69:  */
jpayne@69: 
jpayne@69: #ifndef ENUMSET_H
jpayne@69: #define ENUMSET_H
jpayne@69: 
jpayne@69: #include "unicode/utypes.h"
jpayne@69: 
jpayne@69: #if U_SHOW_CPLUSPLUS_API
jpayne@69: 
jpayne@69: U_NAMESPACE_BEGIN
jpayne@69: 
jpayne@69: /* Can't use #ifndef U_HIDE_INTERNAL_API for the entire EnumSet class, needed in .h file declarations */
jpayne@69: /**
jpayne@69:  * enum bitset for boolean fields. Similar to Java EnumSet<>. 
jpayne@69:  * Needs to range check. Used for private instance variables.
jpayne@69:  * @internal
jpayne@69:  * \cond
jpayne@69:  */
jpayne@69: template<typename T, uint32_t minValue, uint32_t limitValue>
jpayne@69: class EnumSet {
jpayne@69: public:
jpayne@69:     inline EnumSet() : fBools(0) {}
jpayne@69:     inline EnumSet(const EnumSet<T,minValue,limitValue>& other) : fBools(other.fBools) {}
jpayne@69:     inline ~EnumSet() {}
jpayne@69: #ifndef U_HIDE_INTERNAL_API
jpayne@69:     inline void clear() { fBools=0; }
jpayne@69:     inline void add(T toAdd) { set(toAdd, 1); }
jpayne@69:     inline void remove(T toRemove) { set(toRemove, 0); }
jpayne@69:     inline int32_t contains(T toCheck) const { return get(toCheck); }
jpayne@69:     inline void set(T toSet, int32_t v) { fBools=(fBools&(~flag(toSet)))|(v?(flag(toSet)):0); }
jpayne@69:     inline int32_t get(T toCheck) const { return (fBools & flag(toCheck))?1:0; }
jpayne@69:     inline UBool isValidEnum(T toCheck) const {  return (toCheck>=minValue&&toCheck<limitValue); }
jpayne@69:     inline UBool isValidValue(int32_t v) const { return (v==0||v==1); }
jpayne@69:     inline const EnumSet<T,minValue,limitValue>& operator=(const EnumSet<T,minValue,limitValue>& other) {
jpayne@69:         fBools = other.fBools;
jpayne@69:         return *this;
jpayne@69:     }
jpayne@69:   
jpayne@69:     inline uint32_t getAll() const {
jpayne@69:         return fBools; 
jpayne@69:     }
jpayne@69: #endif /* U_HIDE_INTERNAL_API */
jpayne@69: 
jpayne@69: private:
jpayne@69:     inline uint32_t flag(T toCheck) const { return (1<<(toCheck-minValue)); }
jpayne@69: private:
jpayne@69:     uint32_t fBools;
jpayne@69: };
jpayne@69: 
jpayne@69: /** \endcond */
jpayne@69: 
jpayne@69: U_NAMESPACE_END
jpayne@69: 
jpayne@69: #endif /* U_SHOW_CPLUSPLUS_API */
jpayne@69: #endif /* ENUMSET_H */