/src/arduinojson/src/ArduinoJson/Variant/JsonVariant.hpp
Line | Count | Source |
1 | | // ArduinoJson - https://arduinojson.org |
2 | | // Copyright © 2014-2025, Benoit BLANCHON |
3 | | // MIT License |
4 | | |
5 | | #pragma once |
6 | | |
7 | | #include <ArduinoJson/Variant/VariantRefBase.hpp> |
8 | | |
9 | | ARDUINOJSON_BEGIN_PUBLIC_NAMESPACE |
10 | | |
11 | | // A reference to a value in a JsonDocument. |
12 | | // https://arduinojson.org/v7/api/jsonvariant/ |
13 | | class JsonVariant : public detail::VariantRefBase<JsonVariant>, |
14 | | public detail::VariantOperators<JsonVariant> { |
15 | | friend class detail::VariantAttorney; |
16 | | |
17 | | public: |
18 | | // Creates an unbound reference. |
19 | 0 | JsonVariant() {} |
20 | | |
21 | | // INTERNAL USE ONLY |
22 | | JsonVariant(detail::VariantData* data, detail::ResourceManager* resources) |
23 | 0 | : impl_(data, resources) {} |
24 | | |
25 | | // INTERNAL USE ONLY |
26 | 0 | JsonVariant(detail::VariantImpl impl) : impl_(impl) {} |
27 | | |
28 | | private: |
29 | 0 | detail::ResourceManager* getResourceManager() const { |
30 | 0 | return impl_.resources(); |
31 | 0 | } |
32 | | |
33 | 0 | detail::VariantData* getData() const { |
34 | 0 | return impl_.data(); |
35 | 0 | } |
36 | | |
37 | 0 | detail::VariantData* getOrCreateData() const { |
38 | 0 | return impl_.data(); |
39 | 0 | } |
40 | | |
41 | | mutable detail::VariantImpl impl_; |
42 | | }; |
43 | | |
44 | | namespace detail { |
45 | | bool copyVariant(JsonVariant dst, JsonVariantConst src); |
46 | | } |
47 | | |
48 | | template <> |
49 | | struct Converter<JsonVariant> : private detail::VariantAttorney { |
50 | 0 | static bool toJson(JsonVariantConst src, JsonVariant dst) { |
51 | 0 | return copyVariant(dst, src); |
52 | 0 | } |
53 | | |
54 | 0 | static JsonVariant fromJson(JsonVariant src) { |
55 | 0 | return src; |
56 | 0 | } |
57 | | |
58 | 0 | static bool checkJson(JsonVariant src) { |
59 | 0 | auto data = getData(src); |
60 | 0 | return !!data; |
61 | 0 | } |
62 | | }; |
63 | | |
64 | | template <> |
65 | | struct Converter<JsonVariantConst> : private detail::VariantAttorney { |
66 | 0 | static bool toJson(JsonVariantConst src, JsonVariant dst) { |
67 | 0 | return copyVariant(dst, src); |
68 | 0 | } |
69 | | |
70 | 0 | static JsonVariantConst fromJson(JsonVariantConst src) { |
71 | 0 | return JsonVariantConst(getData(src), getResourceManager(src)); |
72 | 0 | } |
73 | | |
74 | 0 | static bool checkJson(JsonVariantConst src) { |
75 | 0 | auto data = getData(src); |
76 | 0 | return !!data; |
77 | 0 | } |
78 | | }; |
79 | | |
80 | | ARDUINOJSON_END_PUBLIC_NAMESPACE |