luau/Analysis/include/Luau/UnifierSharedState.h
Varun Saini f3f3bf8f72
Sync to upstream/release/685 (#1940)
Another week, another release!

## Analysis
- Do not warn on unknown `require`s in non-strict mode.
- Improve `Luau::dump`'s output for `DenseHashMap`.
- Raise type checking errors when we would otherwise be leaking internal
error types from modules.
- Fix a crash that would sometimes occur when calling a function with an
incomplete type.
- Replace uses of `FFlag::LuauSolverV2` in `ClonePublicInterface` with a
`solverMode` field.
- Limit the number of constraints that can be dynamically created to
fail more gracefully in complex cases.
- Fix #1932.

---------

Co-authored-by: Alexander Youngblood <ayoungblood@roblox.com>
Co-authored-by: Andy Friesen <afriesen@roblox.com>
Co-authored-by: Ariel Weiss <aaronweiss@roblox.com>
Co-authored-by: Hunter Goldstein <hgoldstein@roblox.com>
Co-authored-by: Sora Kanosue <skanosue@roblox.com>
Co-authored-by: Talha Pathan <tpathan@roblox.com>
Co-authored-by: Vighnesh Vijay <vvijay@roblox.com>
Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
2025-08-01 14:44:50 -07:00

74 lines
1.8 KiB
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/DenseHash.h"
#include "Luau/Error.h"
#include "Luau/TypeFwd.h"
#include <utility>
namespace Luau
{
struct InternalErrorReporter;
struct TypeIdPairHash
{
size_t hashOne(Luau::TypeId key) const
{
return (uintptr_t(key) >> 4) ^ (uintptr_t(key) >> 9);
}
size_t operator()(const std::pair<Luau::TypeId, Luau::TypeId>& x) const
{
return hashOne(x.first) ^ (hashOne(x.second) << 1);
}
};
struct UnifierCounters
{
int recursionCount = 0;
int recursionLimit = 0;
int iterationCount = 0;
int iterationLimit = 0;
};
struct UnifierSharedState
{
explicit UnifierSharedState(InternalErrorReporter* iceHandler)
: iceHandler(iceHandler)
{
}
InternalErrorReporter* iceHandler;
DenseHashMap<TypeId, bool> skipCacheForType{nullptr};
DenseHashSet<std::pair<TypeId, TypeId>, TypeIdPairHash> cachedUnify{{nullptr, nullptr}};
DenseHashMap<std::pair<TypeId, TypeId>, TypeErrorData, TypeIdPairHash> cachedUnifyError{{nullptr, nullptr}};
DenseHashSet<TypeId> tempSeenTy{nullptr};
DenseHashSet<TypePackId> tempSeenTp{nullptr};
UnifierCounters counters;
bool reentrantTypeReduction = false;
};
struct TypeReductionRentrancyGuard final
{
explicit TypeReductionRentrancyGuard(NotNull<UnifierSharedState> sharedState)
: sharedState{sharedState}
{
sharedState->reentrantTypeReduction = true;
}
~TypeReductionRentrancyGuard()
{
sharedState->reentrantTypeReduction = false;
}
TypeReductionRentrancyGuard(const TypeReductionRentrancyGuard&) = delete;
TypeReductionRentrancyGuard(TypeReductionRentrancyGuard&&) = delete;
private:
NotNull<UnifierSharedState> sharedState;
};
} // namespace Luau