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
22U_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 */
30template<typename T, uint32_t minValue, uint32_t limitValue>
31class EnumSet {
32public:
33    inline EnumSet() : fBools(0) {}
34    inline EnumSet(const EnumSet<T,minValue,limitValue>& other) : fBools(other.fBools) {}
35    inline ~EnumSet() {}
36#ifndef U_HIDE_INTERNAL_API
37    inline void clear() { fBools=0; }
38    inline void add(T toAdd) { set(toAdd, 1); }
39    inline void remove(T toRemove) { set(toRemove, 0); }
40    inline int32_t contains(T toCheck) const { return get(toCheck); }
41    inline void set(T toSet, int32_t v) { fBools=(fBools&(~flag(toSet)))|(v?(flag(toSet)):0); }
42    inline int32_t get(T toCheck) const { return (fBools & flag(toCheck))?1:0; }
43    inline UBool isValidEnum(T toCheck) const {  return (toCheck>=minValue&&toCheck<limitValue); }
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
50    inline uint32_t getAll() const {
51        return fBools;
52    }
53#endif /* U_HIDE_INTERNAL_API */
54
55private:
56    inline uint32_t flag(T toCheck) const { return (1<<(toCheck-minValue)); }
57private:
58    uint32_t fBools;
59};
60
61U_NAMESPACE_END
62
63#endif /* U_SHOW_CPLUSPLUS_API */
64#endif /* ENUMSET_H */
65