42 lines
1.0 KiB
C++
42 lines
1.0 KiB
C++
#include <nlohmann/json-schema.hpp>
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#include <stdexcept>
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using nlohmann::json;
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using nlohmann::json_schema::json_validator;
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static const json schema = R"(
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{
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"$schema": "http://json-schema.org/draft-07/schema#",
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"$id": "arc.schema.json",
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"properties": {
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"angle": {
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"type": "number",
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"description": "Radians, from -π to π.",
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"minimum": -3.14159265358979323846,
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"maximum": 3.14159265358979323846
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}
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}
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})"_json;
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class custom_error_handler : public nlohmann::json_schema::basic_error_handler
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{
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void error(const nlohmann::json::json_pointer &ptr, const json &instance, const std::string &message) override
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{
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if (message != "instance exceeds maximum of 3.141592653589793")
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throw std::invalid_argument("Precision print does not work.");
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}
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};
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int main(void)
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{
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json_validator validator;
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auto instance = R"({ "angle": 3.1415927410125732 })"_json;
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validator.set_root_schema(schema);
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custom_error_handler err;
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validator.validate(instance, err);
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return 0;
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}
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