1/*
2******************************************************************************
3*
4*   Copyright (C) 2012, 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/**
25 * enum bitset for boolean fields. Similar to Java EnumSet<>.
26 * Needs to range check.
27 * @internal
28 */
29template<typename T, uint32_t minValue, uint32_t limitValue>
30class EnumSet {
31public:
32    inline EnumSet() : fBools(0) {}
33    inline EnumSet(const EnumSet<T,minValue,limitValue>& other) : fBools(other.fBools) {}
34    inline ~EnumSet() {}
35    inline void clear() { fBools=0; }
36    inline void add(T toAdd) { set(toAdd, 1); }
37    inline void remove(T toRemove) { set(toRemove, 0); }
38    inline int32_t contains(T toCheck) const { return get(toCheck); }
39    inline void set(T toSet, int32_t v) { fBools=(fBools&(~flag(toSet)))|(v?(flag(toSet)):0); }
40    inline int32_t get(T toCheck) const { return (fBools & flag(toCheck))?1:0; }
41    inline UBool isValidEnum(T toCheck) const {  return (toCheck>=minValue&&toCheck<limitValue); }
42    inline UBool isValidValue(int32_t v) const { return (v==0||v==1); }
43    inline const EnumSet<T,minValue,limitValue>& operator=(const EnumSet<T,minValue,limitValue>& other) {
44        fBools = other.fBools;
45        return *this;
46    }
47
48    inline uint32_t getAll() const {
49        return fBools;
50    }
51
52private:
53    inline uint32_t flag(T toCheck) const { return (1<<(toCheck-minValue)); }
54private:
55    uint32_t fBools;
56};
57
58U_NAMESPACE_END
59
60#endif /* U_SHOW_CPLUSPLUS_API */
61#endif /* ENUMSET_H */
62