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