luau/Analysis/include/Luau/Clone.h

31 lines
816 B
C++

// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
#pragma once
#include "Luau/TypeArena.h"
#include "Luau/TypeVar.h"
#include <unordered_map>
namespace Luau
{
// Only exposed so they can be unit tested.
using SeenTypes = std::unordered_map<TypeId, TypeId>;
using SeenTypePacks = std::unordered_map<TypePackId, TypePackId>;
struct CloneState
{
SeenTypes seenTypes;
SeenTypePacks seenTypePacks;
int recursionCount = 0;
};
TypePackId clone(TypePackId tp, TypeArena& dest, CloneState& cloneState);
TypeId clone(TypeId tp, TypeArena& dest, CloneState& cloneState);
TypeFun clone(const TypeFun& typeFun, TypeArena& dest, CloneState& cloneState);
TypeId shallowClone(TypeId ty, TypeArena& dest, const TxnLog* log);
} // namespace Luau