#include <iostream>
#include <string_view>
#include <vector>

#include "simdjson.h"

struct Car {
  std::string make;
  std::string model;
  int year;
  std::vector<float> tire_pressure;
};

namespace simdjson {
// This tag_invoke MUST be inside simdjson namespace
template <typename simdjson_value>
auto tag_invoke(deserialize_tag, simdjson_value &val, Car& car) {
  ondemand::object obj;
  auto error = val.get_object().get(obj);
  if (error) {
    return error;
  }
  if ((error = obj["make"].get_string(car.make))) {
    return error;
  }
  if ((error = obj["model"].get_string(car.model))) {
    return error;
  }
  if ((error = obj["year"].get(car.year))) {
    return error;
  }
  if ((error = obj["tire_pressure"].get<std::vector<float>>().get(
           car.tire_pressure))) {
    return error;
  }
  return simdjson::SUCCESS;
}
} // namespace simdjson

int main() {
  simdjson::padded_string json =
      R"( { "make": "Toyota", "model": "Camry",  "year": 2018,
       "tire_pressure": [ 40.1, 39.9 ] })"_padded;
  simdjson::ondemand::parser parser;
  simdjson::ondemand::document doc = parser.iterate(json);
  Car c(doc);
  std::cout << c.make << std::endl;
  return 0;
}

$ g++ -std=c++2b -o ./bin/type type.cpp simdjson.cpp -g -O0

type.cpp:17:17: error: ‘deserialize_tag’ was not declared in this scope
   17 | auto tag_invoke(deserialize_tag, simdjson_value &val, Car& car) {