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https://github.com/luau-lang/luau.git
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fd6250cf9d
### What's Changed - Improve readability of unions and intersections by limiting the number of elements of those types that can be presented on a single line (gated under `FFlag::LuauToStringSimpleCompositeTypesSingleLine`) - Adds a new option to the compiler `--record-stats` to record and output compilation statistics - `if...then...else` expressions are now optimized into `AND/OR` form when possible. ### VM - Add a new `buffer` type to Luau based on the [buffer RFC](https://github.com/Roblox/luau/pull/739) and additional C API functions to work with it; this release does not include the library. - Internal C API to work with string buffers has been updated to align with Lua version more closely ### Native Codegen - Added support for new X64 instruction (rev) and new A64 instruction (bswap) in the assembler - Simplified the way numerical loop condition is translated to IR ### New Type Solver - Operator inference now handled by type families - Created a new system called `Type Paths` to explain why subtyping tests fail in order to improve the quality of error messages. - Systematic changes to implement Data Flow analysis in the new solver (`Breadcrumb` removed and replaced with `RefinementKey`) --- 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: Lily Brown <lbrown@roblox.com> Co-authored-by: Vighnesh Vijay <vvijay@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com> --------- Co-authored-by: Arseny Kapoulkine <arseny.kapoulkine@gmail.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Lily Brown <lbrown@roblox.com> Co-authored-by: Aaron Weiss <aaronweiss@roblox.com> Co-authored-by: Alexander McCord <amccord@roblox.com> Co-authored-by: Aviral Goel <agoel@roblox.com>
77 lines
1.6 KiB
C++
77 lines
1.6 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#pragma once
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#include "Luau/NotNull.h"
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#include "Luau/TypedAllocator.h"
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#include "Luau/Variant.h"
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#include "Luau/TypeFwd.h"
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namespace Luau
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{
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struct RefinementKey;
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using DefId = NotNull<const struct Def>;
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struct Variadic;
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struct Negation;
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struct Conjunction;
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struct Disjunction;
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struct Equivalence;
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struct Proposition;
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using Refinement = Variant<Variadic, Negation, Conjunction, Disjunction, Equivalence, Proposition>;
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using RefinementId = Refinement*; // Can and most likely is nullptr.
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struct Variadic
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{
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std::vector<RefinementId> refinements;
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};
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struct Negation
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{
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RefinementId refinement;
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};
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struct Conjunction
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{
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RefinementId lhs;
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RefinementId rhs;
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};
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struct Disjunction
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{
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RefinementId lhs;
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RefinementId rhs;
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};
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struct Equivalence
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{
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RefinementId lhs;
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RefinementId rhs;
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};
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struct Proposition
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{
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const RefinementKey* key;
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TypeId discriminantTy;
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};
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template<typename T>
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const T* get(RefinementId refinement)
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{
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return get_if<T>(refinement);
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}
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struct RefinementArena
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{
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RefinementId variadic(const std::vector<RefinementId>& refis);
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RefinementId negation(RefinementId refinement);
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RefinementId conjunction(RefinementId lhs, RefinementId rhs);
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RefinementId disjunction(RefinementId lhs, RefinementId rhs);
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RefinementId equivalence(RefinementId lhs, RefinementId rhs);
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RefinementId proposition(const RefinementKey* key, TypeId discriminantTy);
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private:
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TypedAllocator<Refinement> allocator;
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};
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} // namespace Luau
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