Function make_cjson

src/framework/io/json.cpp:16–63

namespace {
// Set once at parallel-server startup, before any concurrent parser callers.
bool serialized_json_parsing = false;

cJSON * make_cjson(const Value & value) {
    switch (value.kind()) {
    case Value::Kind::Null:
        return cJSON_CreateNull();
    case Value::Kind::Bool:
        return cJSON_CreateBool(value.as_bool());
    case Value::Kind::Number:
        return cJSON_CreateNumber(value.as_number());
    case Value::Kind::String:
        return cJSON_CreateString(value.as_string().c_str());
    case Value::Kind::Array: {
        cJSON * array_json = cJSON_CreateArray();
        if (array_json == nullptr) {
            throw std::runtime_error("failed to create json array");
        }
        const auto & array_values = value.as_array();
        for (const auto & child_value : array_values) {
            cJSON * child = make_cjson(child_value);
            if (child == nullptr) {
                cJSON_Delete(array_json);
                throw std::runtime_error("failed to create json array element");
            }
            cJSON_AddItemToArray(array_json, child);
        }
        return array_json;
    }
    case Value::Kind::Object: {
        cJSON * object = cJSON_CreateObject();
        if (object == nullptr) {
            throw std::runtime_error("failed to create json object");
        }
        for (const auto & [key, child] : value.as_object()) {
            cJSON * child_json = make_cjson(child);
            if (child_json == nullptr) {
                cJSON_Delete(object);
                throw std::runtime_error("failed to create json object field");
            }
            if (!cJSON_AddItemToObject(object, key.c_str(), child_json)) {
                cJSON_Delete(child_json);
                cJSON_Delete(object);
                throw std::runtime_error("failed to add json object field");
            }
        }
        return object;
    }
    }
    throw std::runtime_error("unsupported json value kind");
}