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1 | // © 2016 and later: Unicode, Inc. and others. |
2 | // License & terms of use: http://www.unicode.org/copyright.html | |
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3 | /* |
4 | ****************************************************************************** | |
5 | * | |
57a6839d | 6 | * Copyright (C) 2012,2014 International Business Machines |
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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 | ||
57a6839d | 26 | /* Can't use #ifndef U_HIDE_INTERNAL_API for the entire EnumSet class, needed in .h file declarations */ |
51004dcb A |
27 | /** |
28 | * enum bitset for boolean fields. Similar to Java EnumSet<>. | |
57a6839d | 29 | * Needs to range check. Used for private instance variables. |
51004dcb | 30 | * @internal |
3d1f044b | 31 | * \cond |
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32 | */ |
33 | template<typename T, uint32_t minValue, uint32_t limitValue> | |
34 | class EnumSet { | |
35 | public: | |
36 | inline EnumSet() : fBools(0) {} | |
37 | inline EnumSet(const EnumSet<T,minValue,limitValue>& other) : fBools(other.fBools) {} | |
38 | inline ~EnumSet() {} | |
57a6839d | 39 | #ifndef U_HIDE_INTERNAL_API |
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40 | inline void clear() { fBools=0; } |
41 | inline void add(T toAdd) { set(toAdd, 1); } | |
42 | inline void remove(T toRemove) { set(toRemove, 0); } | |
43 | inline int32_t contains(T toCheck) const { return get(toCheck); } | |
44 | inline void set(T toSet, int32_t v) { fBools=(fBools&(~flag(toSet)))|(v?(flag(toSet)):0); } | |
45 | inline int32_t get(T toCheck) const { return (fBools & flag(toCheck))?1:0; } | |
46 | inline UBool isValidEnum(T toCheck) const { return (toCheck>=minValue&&toCheck<limitValue); } | |
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 | ||
53 | inline uint32_t getAll() const { | |
54 | return fBools; | |
55 | } | |
57a6839d | 56 | #endif /* U_HIDE_INTERNAL_API */ |
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57 | |
58 | private: | |
59 | inline uint32_t flag(T toCheck) const { return (1<<(toCheck-minValue)); } | |
60 | private: | |
61 | uint32_t fBools; | |
62 | }; | |
63 | ||
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64 | /** \endcond */ |
65 | ||
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66 | U_NAMESPACE_END |
67 | ||
68 | #endif /* U_SHOW_CPLUSPLUS_API */ | |
69 | #endif /* ENUMSET_H */ |