context.hpp

#ifndef ENTT_META_CTX_HPP
#define ENTT_META_CTX_HPP
 
#include <memory>
#include "../container/dense_map.hpp"
#include "../core/fwd.hpp"
#include "../core/utility.hpp"
#include "fwd.hpp"
 
namespace entt {

namespace internal {
 
struct meta_type_node;
 
struct meta_context {
    dense_map<id_type, std::unique_ptr<meta_type_node>, identity> value;
 
    [[nodiscard]] inline static meta_context &from(meta_ctx &);
    [[nodiscard]] inline static const meta_context &from(const meta_ctx &);
};
 
} // namespace internal

class meta_ctx_arg_t final {};

inline constexpr meta_ctx_arg_t meta_ctx_arg{};

class meta_ctx: private internal::meta_context {
    // attorney idiom like model to access the base class
    friend struct internal::meta_context;
};

[[nodiscard]] inline internal::meta_context &internal::meta_context::from(meta_ctx &ctx) {
    return ctx;
}
 
[[nodiscard]] inline const internal::meta_context &internal::meta_context::from(const meta_ctx &ctx) {
    return ctx;
}
 
} // namespace entt
 
#endif