1 // Copyright (C) 2016 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 /* 4 ****************************************************************************** 5 * 6 * Copyright (C) 2012,2014 International Business Machines 7 * Corporation and others. All Rights Reserved. 8 * 9 ****************************************************************************** 10 */ 11 12 /** 13 * \file 14 * \brief C++: internal template EnumSet<> 15 */ 16 17 #ifndef ENUMSET_H 18 #define ENUMSET_H 19 20 #include "unicode/utypes.h" 21 22 #if U_SHOW_CPLUSPLUS_API 23 24 U_NAMESPACE_BEGIN 25 26 /* Can't use #ifndef U_HIDE_INTERNAL_API for the entire EnumSet class, needed in .h file declarations */ 27 /** 28 * enum bitset for boolean fields. Similar to Java EnumSet<>. 29 * Needs to range check. Used for private instance variables. 30 * @internal 31 */ 32 template<typename T, uint32_t minValue, uint32_t limitValue> 33 class EnumSet { 34 public: 35 inline EnumSet() : fBools(0) {} 36 inline EnumSet(const EnumSet<T,minValue,limitValue>& other) : fBools(other.fBools) {} 37 inline ~EnumSet() {} 38 #ifndef U_HIDE_INTERNAL_API 39 inline void clear() { fBools=0; } 40 inline void add(T toAdd) { set(toAdd, 1); } 41 inline void remove(T toRemove) { set(toRemove, 0); } 42 inline int32_t contains(T toCheck) const { return get(toCheck); } 43 inline void set(T toSet, int32_t v) { fBools=(fBools&(~flag(toSet)))|(v?(flag(toSet)):0); } 44 inline int32_t get(T toCheck) const { return (fBools & flag(toCheck))?1:0; } 45 inline UBool isValidEnum(T toCheck) const { return (toCheck>=minValue&&toCheck<limitValue); } 46 inline UBool isValidValue(int32_t v) const { return (v==0||v==1); } 47 inline const EnumSet<T,minValue,limitValue>& operator=(const EnumSet<T,minValue,limitValue>& other) { 48 fBools = other.fBools; 49 return *this; 50 } 51 52 inline uint32_t getAll() const { 53 return fBools; 54 } 55 #endif /* U_HIDE_INTERNAL_API */ 56 57 private: 58 inline uint32_t flag(T toCheck) const { return (1<<(toCheck-minValue)); } 59 private: 60 uint32_t fBools; 61 }; 62 63 U_NAMESPACE_END 64 65 #endif /* U_SHOW_CPLUSPLUS_API */ 66 #endif /* ENUMSET_H */ 67
