entity_builder.inl

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/**
 * @file addons/cpp/mixins/json/entity_builder.inl
 * @brief JSON entity mixin.
 */
 
/** Set a component from JSON.
 *
 * @memberof flecs::entity_builder
 * @ingroup cpp_addons_json
 */
const Self& set_json(
    flecs::id_t e,
    const char *json, 
    flecs::from_json_desc_t *desc = nullptr) const
{
    const flecs::type_info_t *ti = ecs_get_type_info(world_, e);
    if (!ti) {
        ecs_err("id is not a type");
        return to_base();
    }
 
    flecs::entity_t type = ti->component;
 
    void *ptr = ecs_ensure_id(world_, id_, e, static_cast<size_t>(ti->size));
    ecs_assert(ptr != nullptr, ECS_INTERNAL_ERROR, nullptr);
    ecs_ptr_from_json(world_, type, ptr, json, desc);
    ecs_modified_id(world_, id_, e);
 
    return to_base();
}
 
/** Set a pair from JSON.
 *
 * @memberof flecs::entity_builder
 * @ingroup cpp_addons_json
 */
const Self& set_json(
    flecs::entity_t r,
    flecs::entity_t t,
    const char *json, 
    flecs::from_json_desc_t *desc = nullptr) const
{
    return set_json(ecs_pair(r, t), json, desc);
}
 
/** Set a component from JSON.
 *
 * @memberof flecs::entity_builder
 * @ingroup cpp_addons_json
 */
template <typename T>
const Self& set_json(
    const char *json,
    flecs::from_json_desc_t *desc = nullptr) const
{
    return set_json(_::type<T>::id(world_), json, desc);
}
 
/** Set a pair from JSON.
 *
 * @memberof flecs::entity_builder
 * @ingroup cpp_addons_json
 */
template <typename R, typename T>
const Self& set_json(
    const char *json, 
    flecs::from_json_desc_t *desc = nullptr) const
{
    return set_json(
        _::type<R>::id(world_), 
        _::type<T>::id(world_),
        json, desc);
}
 
/** Set a pair from JSON.
 *
 * @memberof flecs::entity_builder
 * @ingroup cpp_addons_json
 */
template <typename R>
const Self& set_json(
    flecs::entity_t t,
    const char *json, 
    flecs::from_json_desc_t *desc = nullptr) const
{
    return set_json(
        _::type<R>::id(world_), t,
        json, desc);
}
 
/** Set a pair from JSON.
 *
 * @memberof flecs::entity_builder
 * @ingroup cpp_addons_json
 */
template <typename T>
const Self& set_json_second(
    flecs::entity_t r,
    const char *json, 
    flecs::from_json_desc_t *desc = nullptr) const
{
    return set_json(
        r, _::type<T>::id(world_),
        json, desc);
}