1 // © 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 * \cond 32 */ 33 template<typename T, uint32_t minValue, uint32_t limitValue> 34 class EnumSet { 35 public: EnumSet()36 inline EnumSet() : fBools(0) {} EnumSet(const EnumSet<T,minValue,limitValue> & other)37 inline EnumSet(const EnumSet<T,minValue,limitValue>& other) : fBools(other.fBools) {} ~EnumSet()38 inline ~EnumSet() {} 39 #ifndef U_HIDE_INTERNAL_API clear()40 inline void clear() { fBools=0; } add(T toAdd)41 inline void add(T toAdd) { set(toAdd, 1); } remove(T toRemove)42 inline void remove(T toRemove) { set(toRemove, 0); } contains(T toCheck)43 inline int32_t contains(T toCheck) const { return get(toCheck); } set(T toSet,int32_t v)44 inline void set(T toSet, int32_t v) { fBools=(fBools&(~flag(toSet)))|(v?(flag(toSet)):0); } get(T toCheck)45 inline int32_t get(T toCheck) const { return (fBools & flag(toCheck))?1:0; } isValidEnum(T toCheck)46 inline UBool isValidEnum(T toCheck) const { return (toCheck>=minValue&&toCheck<limitValue); } isValidValue(int32_t v)47 inline UBool isValidValue(int32_t v) const { return (v==0||v==1); } 48 inline const EnumSet<T,minValue,limitValue>& operator=(const EnumSet<T,minValue,limitValue>& other) { 49 fBools = other.fBools; 50 return *this; 51 } 52 getAll()53 inline uint32_t getAll() const { 54 return fBools; 55 } 56 #endif /* U_HIDE_INTERNAL_API */ 57 58 private: flag(T toCheck)59 inline uint32_t flag(T toCheck) const { return (1<<(toCheck-minValue)); } 60 private: 61 uint32_t fBools; 62 }; 63 64 /** \endcond */ 65 66 U_NAMESPACE_END 67 68 #endif /* U_SHOW_CPLUSPLUS_API */ 69 #endif /* ENUMSET_H */ 70