mirror of
https://github.com/luau-lang/luau.git
synced 2024-12-13 21:40:43 +00:00
31a017c5c7
* Rerun clang-format on the code
* Fix the variance on indexer result subtyping. This fixes some issues
with inconsistent error reporting.
* Fix a bug in the normalization logic for intersections of strings
New Type Solver
* New overload selection logic
* Subtype tests now correctly treat a generic as its upper bound within
that generic's scope
* Semantic subtyping for negation types
* Semantic subtyping between strings and compatible table types like
`{lower: (string) -> string}`
* Further work toward finalizing our new subtype test
* Correctly generalize module-scope symbols
Native Codegen
* Lowering statistics for assembly
* Make executable allocation size/limit configurable without a rebuild.
Use `FInt::LuauCodeGenBlockSize` and `FInt::LuauCodeGenMaxTotalSize`.
---------
Co-authored-by: Arseny Kapoulkine <arseny.kapoulkine@gmail.com>
Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
Co-authored-by: Lily Brown <lbrown@roblox.com>
83 lines
2.7 KiB
C++
83 lines
2.7 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/NotNull.h"
|
|
#include "Luau/Substitution.h"
|
|
#include "Luau/Type.h"
|
|
#include "Luau/Unifiable.h"
|
|
|
|
namespace Luau
|
|
{
|
|
|
|
struct BuiltinTypes;
|
|
struct TxnLog;
|
|
struct TypeArena;
|
|
struct TypeCheckLimits;
|
|
|
|
// A substitution which replaces generic types in a given set by free types.
|
|
struct ReplaceGenerics : Substitution
|
|
{
|
|
ReplaceGenerics(const TxnLog* log, TypeArena* arena, NotNull<BuiltinTypes> builtinTypes, TypeLevel level, Scope* scope,
|
|
const std::vector<TypeId>& generics, const std::vector<TypePackId>& genericPacks)
|
|
: Substitution(log, arena)
|
|
, builtinTypes(builtinTypes)
|
|
, level(level)
|
|
, scope(scope)
|
|
, generics(generics)
|
|
, genericPacks(genericPacks)
|
|
{
|
|
}
|
|
|
|
NotNull<BuiltinTypes> builtinTypes;
|
|
|
|
TypeLevel level;
|
|
Scope* scope;
|
|
std::vector<TypeId> generics;
|
|
std::vector<TypePackId> genericPacks;
|
|
bool ignoreChildren(TypeId ty) override;
|
|
bool isDirty(TypeId ty) override;
|
|
bool isDirty(TypePackId tp) override;
|
|
TypeId clean(TypeId ty) override;
|
|
TypePackId clean(TypePackId tp) override;
|
|
};
|
|
|
|
// A substitution which replaces generic functions by monomorphic functions
|
|
struct Instantiation : Substitution
|
|
{
|
|
Instantiation(const TxnLog* log, TypeArena* arena, NotNull<BuiltinTypes> builtinTypes, TypeLevel level, Scope* scope)
|
|
: Substitution(log, arena)
|
|
, builtinTypes(builtinTypes)
|
|
, level(level)
|
|
, scope(scope)
|
|
{
|
|
}
|
|
|
|
NotNull<BuiltinTypes> builtinTypes;
|
|
|
|
TypeLevel level;
|
|
Scope* scope;
|
|
bool ignoreChildren(TypeId ty) override;
|
|
bool isDirty(TypeId ty) override;
|
|
bool isDirty(TypePackId tp) override;
|
|
TypeId clean(TypeId ty) override;
|
|
TypePackId clean(TypePackId tp) override;
|
|
};
|
|
|
|
/** Attempt to instantiate a type. Only used under local type inference.
|
|
*
|
|
* When given a generic function type, instantiate() will return a copy with the
|
|
* generics replaced by fresh types. Instantiation will return the same TypeId
|
|
* back if the function does not have any generics.
|
|
*
|
|
* All higher order generics are left as-is. For example, instantiation of
|
|
* <X>(<Y>(Y) -> (X, Y)) -> (X, Y) is (<Y>(Y) -> ('x, Y)) -> ('x, Y)
|
|
*
|
|
* We substitute the generic X for the free 'x, but leave the generic Y alone.
|
|
*
|
|
* Instantiation fails only when processing the type causes internal recursion
|
|
* limits to be exceeded.
|
|
*/
|
|
std::optional<TypeId> instantiate(
|
|
NotNull<BuiltinTypes> builtinTypes, NotNull<TypeArena> arena, NotNull<TypeCheckLimits> limits, NotNull<Scope> scope, TypeId ty);
|
|
|
|
} // namespace Luau
|