Michael W. Heiss
60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
#pragma once
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#include <map>
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#include <stdexcept>
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#include <string>
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#include <string_view>
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#include <variant>
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#include <vector>
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namespace mocca {
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/**
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* Minimal JSON value type used by the modern configuration and result layer.
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*
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* The project only needs a small subset of JSON infrastructure, so this keeps
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* parsing and serialization self-contained instead of adding another external
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* dependency.
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*/
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class JsonValue {
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public:
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using Array = std::vector<JsonValue>;
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using Object = std::map<std::string, JsonValue>;
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JsonValue() = default;
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JsonValue(std::nullptr_t);
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JsonValue(bool value);
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JsonValue(double value);
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JsonValue(int value);
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JsonValue(std::string value);
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JsonValue(const char* value);
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JsonValue(Array value);
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JsonValue(Object value);
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[[nodiscard]] bool is_null() const;
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[[nodiscard]] bool is_bool() const;
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[[nodiscard]] bool is_number() const;
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[[nodiscard]] bool is_string() const;
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[[nodiscard]] bool is_array() const;
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[[nodiscard]] bool is_object() const;
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[[nodiscard]] bool as_bool() const;
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[[nodiscard]] double as_number() const;
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[[nodiscard]] const std::string& as_string() const;
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[[nodiscard]] const Array& as_array() const;
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[[nodiscard]] const Object& as_object() const;
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[[nodiscard]] Array& as_array();
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[[nodiscard]] Object& as_object();
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[[nodiscard]] bool contains(const std::string& key) const;
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[[nodiscard]] const JsonValue& at(const std::string& key) const;
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private:
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std::variant<std::nullptr_t, bool, double, std::string, Array, Object> data_{nullptr};
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};
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JsonValue parse_json(std::string_view text);
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std::string to_json_string(const JsonValue& value, int indent = 2);
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} // namespace mocca
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