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55f3e00938
## What's Changed? This week we have an update with an implementation for one of the RFCs we had approved before, an improvement of the new type solver and a small Lua 5.1 C API compatibility improvement. * `@deprecated` attribute can now have a custom suggestion for a replacement and a reason message as described in [deprecated attribute parameters RFC](https://rfcs.luau.org/syntax-attribute-functions-deprecated.html) For example: ```luau @[deprecated {reason = "foo suffers from performance issues", use = "bar"}] local function foo() ... end -- Function 'foo' is deprecated, use 'bar' instead. foo suffers from performance issues foo() ``` * `lua_cpcall` C API function has been restored both for compatibility with Lua 5.1 and as a safe way to enter protected call environment to work with Luau C API functions that may error Instead of ``` if (!lua_checkstack(L, 2)) return -1; lua_pushcfunction(L, test, nullptr); lua_pushlightuserdata(L, context); int status = lua_pcall(L, 1, 0, 0); ``` you can simply do ``` int status = lua_cpcall(L, test, context); ``` * In Luau CLI, required module return values can now have any type ## New Type Solver - Additional improvements on type refinements used with external types should fix some reported false positive errors where types refined to `never` - Fixed an issue in recursive refinement types in a form of `t1 where t1 = refine<t1, _>` getting 'stuck' - Fixed an issue in subtyping of generic functions, it is now possible to assign `<T>(T, (T) -> T) -> T` to `(number, <X>(X) -> X) -> number` - Fixed an ICE caused by recursive types (Fixes #1686) - Added additional iteration and recursion limits to stop the type solver before system resources are used up ## Internal Contributors Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Annie Tang <annietang@roblox.com> Co-authored-by: Ariel Weiss <aaronweiss@roblox.com> Co-authored-by: Hunter Goldstein <hgoldstein@roblox.com> Co-authored-by: Ilya Rezvov <irezvov@roblox.com> Co-authored-by: Sora Kanosue <skanosue@roblox.com> Co-authored-by: Vighnesh Vijay <vvijay@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com> |
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| .. | ||
| conformance | ||
| require | ||
| AssemblyBuilderA64.test.cpp | ||
| AssemblyBuilderX64.test.cpp | ||
| AstJsonEncoder.test.cpp | ||
| AstQuery.test.cpp | ||
| AstQueryDsl.cpp | ||
| AstQueryDsl.h | ||
| AstVisitor.test.cpp | ||
| Autocomplete.test.cpp | ||
| BuiltinDefinitions.test.cpp | ||
| ClassFixture.cpp | ||
| ClassFixture.h | ||
| CodeAllocator.test.cpp | ||
| Compiler.test.cpp | ||
| Config.test.cpp | ||
| Conformance.test.cpp | ||
| ConformanceIrHooks.h | ||
| ConstraintGeneratorFixture.cpp | ||
| ConstraintGeneratorFixture.h | ||
| ConstraintSolver.test.cpp | ||
| CostModel.test.cpp | ||
| DataFlowGraph.test.cpp | ||
| DenseHash.test.cpp | ||
| EqSat.language.test.cpp | ||
| EqSat.propositional.test.cpp | ||
| EqSat.slice.test.cpp | ||
| EqSatSimplification.test.cpp | ||
| Error.test.cpp | ||
| Fixture.cpp | ||
| Fixture.h | ||
| FragmentAutocomplete.test.cpp | ||
| Frontend.test.cpp | ||
| Generalization.test.cpp | ||
| InferPolarity.test.cpp | ||
| InsertionOrderedMap.test.cpp | ||
| Instantiation2.test.cpp | ||
| IostreamOptional.h | ||
| IrBuilder.test.cpp | ||
| IrCallWrapperX64.test.cpp | ||
| IrLowering.test.cpp | ||
| IrRegAllocX64.test.cpp | ||
| JsonEmitter.test.cpp | ||
| Lexer.test.cpp | ||
| Linter.test.cpp | ||
| LValue.test.cpp | ||
| main.cpp | ||
| Module.test.cpp | ||
| NonstrictMode.test.cpp | ||
| NonStrictTypeChecker.test.cpp | ||
| Normalize.test.cpp | ||
| NotNull.test.cpp | ||
| Parser.test.cpp | ||
| RegisterCallbacks.cpp | ||
| RegisterCallbacks.h | ||
| Repl.test.cpp | ||
| RequireByString.test.cpp | ||
| RequireTracer.test.cpp | ||
| RuntimeLimits.test.cpp | ||
| ScopedFlags.h | ||
| Set.test.cpp | ||
| SharedCodeAllocator.test.cpp | ||
| Simplify.test.cpp | ||
| StringUtils.test.cpp | ||
| Subtyping.test.cpp | ||
| Symbol.test.cpp | ||
| ToDot.test.cpp | ||
| TopoSort.test.cpp | ||
| ToString.test.cpp | ||
| Transpiler.test.cpp | ||
| TxnLog.test.cpp | ||
| TypeFunction.test.cpp | ||
| TypeFunction.user.test.cpp | ||
| TypeInfer.aliases.test.cpp | ||
| TypeInfer.annotations.test.cpp | ||
| TypeInfer.anyerror.test.cpp | ||
| TypeInfer.builtins.test.cpp | ||
| TypeInfer.cfa.test.cpp | ||
| TypeInfer.classes.test.cpp | ||
| TypeInfer.definitions.test.cpp | ||
| TypeInfer.functions.test.cpp | ||
| TypeInfer.generics.test.cpp | ||
| TypeInfer.intersectionTypes.test.cpp | ||
| TypeInfer.loops.test.cpp | ||
| TypeInfer.modules.test.cpp | ||
| TypeInfer.negations.test.cpp | ||
| TypeInfer.oop.test.cpp | ||
| TypeInfer.operators.test.cpp | ||
| TypeInfer.primitives.test.cpp | ||
| TypeInfer.provisional.test.cpp | ||
| TypeInfer.refinements.test.cpp | ||
| TypeInfer.singletons.test.cpp | ||
| TypeInfer.tables.test.cpp | ||
| TypeInfer.test.cpp | ||
| TypeInfer.tryUnify.test.cpp | ||
| TypeInfer.typePacks.test.cpp | ||
| TypeInfer.typestates.test.cpp | ||
| TypeInfer.unionTypes.test.cpp | ||
| TypeInfer.unknownnever.test.cpp | ||
| TypePack.test.cpp | ||
| TypePath.test.cpp | ||
| TypeVar.test.cpp | ||
| Unifier2.test.cpp | ||
| Variant.test.cpp | ||
| VecDeque.test.cpp | ||
| VisitType.test.cpp | ||