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1 json11
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2 ------
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3
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4 json11 is a tiny JSON library for C++11, providing JSON parsing and serialization.
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5
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6 The core object provided by the library is json11::Json. A Json object represents any JSON
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7 value: null, bool, number (int or double), string (std::string), array (std::vector), or
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8 object (std::map).
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9
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10 Json objects act like values. They can be assigned, copied, moved, compared for equality or
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11 order, and so on. There are also helper methods Json::dump, to serialize a Json to a string, and
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12 Json::parse (static) to parse a std::string as a Json object.
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13
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14 It's easy to make a JSON object with C++11's new initializer syntax:
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15
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16 Json my_json = Json::object {
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17 { "key1", "value1" },
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18 { "key2", false },
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19 { "key3", Json::array { 1, 2, 3 } },
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20 };
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21 std::string json_str = my_json.dump();
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22
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23 There are also implicit constructors that allow standard and user-defined types to be
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24 automatically converted to JSON. For example:
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25
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26 class Point {
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27 public:
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28 int x;
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29 int y;
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30 Point (int x, int y) : x(x), y(y) {}
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31 Json to_json() const { return Json::array { x, y }; }
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32 };
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33
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34 std::vector<Point> points = { { 1, 2 }, { 10, 20 }, { 100, 200 } };
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35 std::string points_json = Json(points).dump();
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36
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37 JSON values can have their values queried and inspected:
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38
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39 Json json = Json::array { Json::object { { "k", "v" } } };
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40 std::string str = json[0]["k"].string_value();
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41
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42 More documentation is still to come. For now, see json11.hpp.
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