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