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## What's Changed ### General - Allow types of tables to diverge after using `table.clone` (fixes #1617). - Allow 2-argument vector.create in Luau. - Fix a crash when suggesting autocomplete after encountering parsing errors. - Add lua_tolstringatom C API which returns the string length (whether or not the atom exists) and which extends the existing lua_tostringatom function the same way lua_tolstring/lua_tostring do. - Luau now retains the DFGs of typechecked modules. ### Magic Functions Migration Note We've made a change to the API used to define magic functions. Previously, we had a set of function pointers on each `FunctionType` that would be invoked by the type inference engine at the correct point. The problem we'd run into is that they were all `std::function`s, we'd grown quite a few of them, and Luau allocates tens of thousands of types as it performs type inference. This adds up to a large amount of memory for data that isn't used by 99% of types. To slim things down a bit, we've replaced all of those `std::function`s with a single `shared_ptr` to a new interface called `MagicFunction`. This slims down the memory footprint of each type by about 50 bytes. The virtual methods of `MagicFunction` have roughly 1:1 correspondence with the old interface, so updating things should not be too difficult: * `FunctionType::magicFunction` is now `MagicFunction::handleOldSolver` * `FunctionType::dcrMagicFunction` is now `MagicFunction::infer` * `FunctionType::dcrMagicRefinement` is now `MagicFunction::refine` * `FunctionType::dcrMagicTypeCheck` is now `MagicFunction::typeCheck` **Full Changelog**: https://github.com/luau-lang/luau/compare/0.657...0.658 --- Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Ariel Weiss <aaronweiss@roblox.com> Co-authored-by: Aviral Goel <agoel@roblox.com> Co-authored-by: Hunter Goldstein <hgoldstein@roblox.com> Co-authored-by: Talha Pathan <tpathan@roblox.com> Co-authored-by: Varun Saini <vsaini@roblox.com> Co-authored-by: Vighnesh Vijay <vvijay@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
86 lines
2.1 KiB
C++
86 lines
2.1 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/Ast.h"
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#include "Luau/Parser.h"
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#include "Luau/AutocompleteTypes.h"
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#include "Luau/DenseHash.h"
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#include "Luau/Module.h"
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#include "Luau/Frontend.h"
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#include <memory>
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#include <vector>
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namespace Luau
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{
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struct FrontendOptions;
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enum class FragmentTypeCheckStatus
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{
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SkipAutocomplete,
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Success,
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};
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struct FragmentAutocompleteAncestryResult
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{
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DenseHashMap<AstName, AstLocal*> localMap{AstName()};
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std::vector<AstLocal*> localStack;
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std::vector<AstNode*> ancestry;
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AstStat* nearestStatement = nullptr;
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};
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struct FragmentParseResult
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{
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std::string fragmentToParse;
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AstStatBlock* root = nullptr;
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std::vector<AstNode*> ancestry;
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AstStat* nearestStatement = nullptr;
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std::vector<Comment> commentLocations;
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std::unique_ptr<Allocator> alloc = std::make_unique<Allocator>();
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};
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struct FragmentTypeCheckResult
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{
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ModulePtr incrementalModule = nullptr;
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ScopePtr freshScope;
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std::vector<AstNode*> ancestry;
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};
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struct FragmentAutocompleteResult
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{
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ModulePtr incrementalModule;
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Scope* freshScope;
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TypeArena arenaForAutocomplete;
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AutocompleteResult acResults;
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};
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FragmentAutocompleteAncestryResult findAncestryForFragmentParse(AstStatBlock* root, const Position& cursorPos);
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std::optional<FragmentParseResult> parseFragment(
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const SourceModule& srcModule,
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std::string_view src,
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const Position& cursorPos,
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std::optional<Position> fragmentEndPosition
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);
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std::pair<FragmentTypeCheckStatus, FragmentTypeCheckResult> typecheckFragment(
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Frontend& frontend,
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const ModuleName& moduleName,
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const Position& cursorPos,
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std::optional<FrontendOptions> opts,
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std::string_view src,
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std::optional<Position> fragmentEndPosition
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);
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FragmentAutocompleteResult fragmentAutocomplete(
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Frontend& frontend,
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std::string_view src,
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const ModuleName& moduleName,
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Position cursorPosition,
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std::optional<FrontendOptions> opts,
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StringCompletionCallback callback,
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std::optional<Position> fragmentEndPosition = std::nullopt
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);
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} // namespace Luau
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