1 /* 2 ****************************************************************************** 3 * 4 * Copyright (C) 2012,2014 International Business Machines 5 * Corporation and others. All Rights Reserved. 6 * 7 ****************************************************************************** 8 */ 9 10 /** 11 * \file 12 * \brief C++: internal template EnumSet<> 13 */ 14 15 #ifndef ENUMSET_H 16 #define ENUMSET_H 17 18 #include "unicode/utypes.h" 19 20 #if U_SHOW_CPLUSPLUS_API 21 22 U_NAMESPACE_BEGIN 23 24 /* Can't use #ifndef U_HIDE_INTERNAL_API for the entire EnumSet class, needed in .h file declarations */ 25 /** 26 * enum bitset for boolean fields. Similar to Java EnumSet<>. 27 * Needs to range check. Used for private instance variables. 28 * @internal 29 */ 30 template<typename T, uint32_t minValue, uint32_t limitValue> 31 class EnumSet { 32 public: EnumSet()33 inline EnumSet() : fBools(0) {} EnumSet(const EnumSet<T,minValue,limitValue> & other)34 inline EnumSet(const EnumSet<T,minValue,limitValue>& other) : fBools(other.fBools) {} ~EnumSet()35 inline ~EnumSet() {} 36 #ifndef U_HIDE_INTERNAL_API clear()37 inline void clear() { fBools=0; } add(T toAdd)38 inline void add(T toAdd) { set(toAdd, 1); } remove(T toRemove)39 inline void remove(T toRemove) { set(toRemove, 0); } contains(T toCheck)40 inline int32_t contains(T toCheck) const { return get(toCheck); } set(T toSet,int32_t v)41 inline void set(T toSet, int32_t v) { fBools=(fBools&(~flag(toSet)))|(v?(flag(toSet)):0); } get(T toCheck)42 inline int32_t get(T toCheck) const { return (fBools & flag(toCheck))?1:0; } isValidEnum(T toCheck)43 inline UBool isValidEnum(T toCheck) const { return (toCheck>=minValue&&toCheck<limitValue); } isValidValue(int32_t v)44 inline UBool isValidValue(int32_t v) const { return (v==0||v==1); } 45 inline const EnumSet<T,minValue,limitValue>& operator=(const EnumSet<T,minValue,limitValue>& other) { 46 fBools = other.fBools; 47 return *this; 48 } 49 getAll()50 inline uint32_t getAll() const { 51 return fBools; 52 } 53 #endif /* U_HIDE_INTERNAL_API */ 54 55 private: flag(T toCheck)56 inline uint32_t flag(T toCheck) const { return (1<<(toCheck-minValue)); } 57 private: 58 uint32_t fBools; 59 }; 60 61 U_NAMESPACE_END 62 63 #endif /* U_SHOW_CPLUSPLUS_API */ 64 #endif /* ENUMSET_H */ 65