mirror of
https://github.com/luau-lang/luau.git
synced 2024-12-14 06:00:39 +00:00
68bd1b2349
# What's changed? * Improved the actual message for the type errors for `cannot call non-function` when attempting to call a union of functions/callable tables. The error now correctly explains the issue is an inability to determine the return type of the call in this situation. * Resolve an issue where tables and metatables were not correctly being cloned during instantiation (fixes #1176). * Refactor `luaM_getnextgcopage` to `luaM_getnextpage` (generally removing `gco` prefix where appropriate). * Optimize `table.move` between tables for large ranges of elements. * Reformat a bunch of code automatically using `clang-format`. ### New Type Solver * Clean up minimally-used or unused constraints in the constraint solver (`InstantiationConstraint`, `SetOpConstraint`, `SingletonOrTopTypeConstraint`). * Add a builtin `singleton` type family to replace `SingletonOrTopTypeConstraint` when inferring refinements. * Fixed a crash involving type path reasoning by recording when type family reduction has taken place in the path. * Improved constraint ordering by blocking on unreduced types families that are not yet proven uninhabitable. * Improved the handling of `SetIndexerConstraints` for both better inference quality and to resolve crashes. * Fix a crash when normalizing cyclic unions of intersections. * Fix a crash when normalizing an intersection with the negation of `unknown`. * Fix a number of crashes caused by missing `follow` calls on `TypeId`s. * Changed type family reduction to correctly use a semantic notion of uninhabited types, rather than checking for `never` types specifically. * Refactor the `union` and `intersect` type families to be variadic. ### Native Code Generation * Improve translation for userdata key get/set and userdata/vector namecall. * Provide `[top level]` and `[anonymous]` as function names to `FunctionStats` as appropriate when no function name is available. * Disable unwind support on Android platforms since it is unsupported. * --- ### Internal Contributors Co-authored-by: Aaron Weiss <aaronweiss@roblox.com> Co-authored-by: Alexander McCord <amccord@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Aviral Goel <agoel@roblox.com> Co-authored-by: Vighnesh Vijay <vvijay@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com> --------- Co-authored-by: Alexander McCord <amccord@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Vighnesh <vvijay@roblox.com> Co-authored-by: Aviral Goel <agoel@roblox.com> Co-authored-by: David Cope <dcope@roblox.com> Co-authored-by: Lily Brown <lbrown@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
95 lines
3.3 KiB
C++
95 lines
3.3 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/Ast.h"
|
|
#include "Luau/InsertionOrderedMap.h"
|
|
#include "Luau/NotNull.h"
|
|
#include "Luau/TypeFwd.h"
|
|
#include "Luau/Location.h"
|
|
#include "Luau/Error.h"
|
|
#include "Luau/Subtyping.h"
|
|
|
|
namespace Luau
|
|
{
|
|
|
|
struct BuiltinTypes;
|
|
struct TypeArena;
|
|
struct Scope;
|
|
struct InternalErrorReporter;
|
|
struct TypeCheckLimits;
|
|
struct Subtyping;
|
|
|
|
class Normalizer;
|
|
|
|
struct OverloadResolver
|
|
{
|
|
enum Analysis
|
|
{
|
|
Ok,
|
|
TypeIsNotAFunction,
|
|
ArityMismatch,
|
|
OverloadIsNonviable, // Arguments were incompatible with the overloads parameters but were otherwise compatible by arity
|
|
};
|
|
|
|
OverloadResolver(NotNull<BuiltinTypes> builtinTypes, NotNull<TypeArena> arena, NotNull<Normalizer> normalizer, NotNull<Scope> scope,
|
|
NotNull<InternalErrorReporter> reporter, NotNull<TypeCheckLimits> limits, Location callLocation);
|
|
|
|
NotNull<BuiltinTypes> builtinTypes;
|
|
NotNull<TypeArena> arena;
|
|
NotNull<Normalizer> normalizer;
|
|
NotNull<Scope> scope;
|
|
NotNull<InternalErrorReporter> ice;
|
|
NotNull<TypeCheckLimits> limits;
|
|
Subtyping subtyping;
|
|
Location callLoc;
|
|
|
|
// Resolver results
|
|
std::vector<TypeId> ok;
|
|
std::vector<TypeId> nonFunctions;
|
|
std::vector<std::pair<TypeId, ErrorVec>> arityMismatches;
|
|
std::vector<std::pair<TypeId, ErrorVec>> nonviableOverloads;
|
|
InsertionOrderedMap<TypeId, std::pair<OverloadResolver::Analysis, size_t>> resolution;
|
|
|
|
|
|
std::pair<OverloadResolver::Analysis, TypeId> selectOverload(TypeId ty, TypePackId args);
|
|
void resolve(TypeId fnTy, const TypePack* args, AstExpr* selfExpr, const std::vector<AstExpr*>* argExprs);
|
|
|
|
private:
|
|
std::optional<ErrorVec> testIsSubtype(const Location& location, TypeId subTy, TypeId superTy);
|
|
std::optional<ErrorVec> testIsSubtype(const Location& location, TypePackId subTy, TypePackId superTy);
|
|
std::pair<Analysis, ErrorVec> checkOverload(
|
|
TypeId fnTy, const TypePack* args, AstExpr* fnLoc, const std::vector<AstExpr*>* argExprs, bool callMetamethodOk = true);
|
|
static bool isLiteral(AstExpr* expr);
|
|
LUAU_NOINLINE
|
|
std::pair<Analysis, ErrorVec> checkOverload_(
|
|
TypeId fnTy, const FunctionType* fn, const TypePack* args, AstExpr* fnExpr, const std::vector<AstExpr*>* argExprs);
|
|
size_t indexof(Analysis analysis);
|
|
void add(Analysis analysis, TypeId ty, ErrorVec&& errors);
|
|
};
|
|
|
|
struct SolveResult
|
|
{
|
|
enum OverloadCallResult
|
|
{
|
|
Ok,
|
|
CodeTooComplex,
|
|
OccursCheckFailed,
|
|
NoMatchingOverload,
|
|
};
|
|
|
|
OverloadCallResult result;
|
|
std::optional<TypePackId> typePackId; // nullopt if result != Ok
|
|
|
|
TypeId overloadToUse = nullptr;
|
|
TypeId inferredTy = nullptr;
|
|
DenseHashMap<TypeId, std::vector<TypeId>> expandedFreeTypes{nullptr};
|
|
};
|
|
|
|
// Helper utility, presently used for binary operator type families.
|
|
//
|
|
// Given a function and a set of arguments, select a suitable overload.
|
|
SolveResult solveFunctionCall(NotNull<TypeArena> arena, NotNull<BuiltinTypes> builtinTypes, NotNull<Normalizer> normalizer,
|
|
NotNull<InternalErrorReporter> iceReporter, NotNull<TypeCheckLimits> limits, NotNull<Scope> scope, const Location& location, TypeId fn,
|
|
TypePackId argsPack);
|
|
|
|
} // namespace Luau
|