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713ee2ff8b
# What's Changed?
We've been hard at work fixing bugs in the new type solver and getting
it ready to go!
## Native Codegen
* Specialized Luau Codegen instruction for fetching an import.
As a reminder, an import is an expression like `global.thing` and covers
stuff like libraries without fastcalls `coroutine.resume`) and atomic
extern libraries.
## New Type Solver
* Fix an issue that prevented eager generalization from working properly
with OO styled code.
* Avoid copying uninitialized memory in Luau attribute parsing
* Improve type inference of unsealed tables.
* This fixes https://github.com/luau-lang/luau/issues/1838
* and https://github.com/luau-lang/luau/issues/1859
* Infer potential singleton string keys in autocomplete when the
expected index type is a union type.
* Avoid creating cyclic types when reducing types of the form `t1 where
t1 = refine<T, t1, Y>`
* The type cloner now does the same thing for the new and old solvers.
* Properly infer polarity (aka variance) for divergent table properties.
(ie tables whose read type and write type are not the same)
* Crash fixes.
---------
Co-authored-by: Hunter Goldstein <hgoldstein@roblox.com>
Co-authored-by: Varun Saini <61795485+vrn-sn@users.noreply.github.com>
Co-authored-by: Alexander Youngblood <ayoungblood@roblox.com>
Co-authored-by: Menarul Alam <malam@roblox.com>
Co-authored-by: Aviral Goel <agoel@roblox.com>
Co-authored-by: Vighnesh <vvijay@roblox.com>
Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
Co-authored-by: Ariel Weiss <aaronweiss@roblox.com>
69 lines
2 KiB
C++
69 lines
2 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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#include "ConstraintGeneratorFixture.h"
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#include "ScopedFlags.h"
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LUAU_FASTFLAG(LuauSolverV2);
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namespace Luau
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{
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ConstraintGeneratorFixture::ConstraintGeneratorFixture()
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: Fixture()
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, mainModule(new Module)
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, simplifier(newSimplifier(NotNull{&arena}, getBuiltins()))
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, forceTheFlag{FFlag::LuauSolverV2, true}
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{
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getFrontend(); // Force the frontend to exist in the constructor.
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mainModule->name = "MainModule";
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mainModule->humanReadableName = "MainModule";
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BlockedTypePack::nextIndex = 0;
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}
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void ConstraintGeneratorFixture::generateConstraints(const std::string& code)
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{
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AstStatBlock* root = parse(code);
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dfg = std::make_unique<DataFlowGraph>(
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DataFlowGraphBuilder::build(root, NotNull{&mainModule->defArena}, NotNull{&mainModule->keyArena}, NotNull{&ice})
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);
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cg = std::make_unique<ConstraintGenerator>(
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mainModule,
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NotNull{&normalizer},
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NotNull{simplifier.get()},
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NotNull{&typeFunctionRuntime},
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NotNull(&moduleResolver),
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getBuiltins(),
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NotNull(&ice),
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getFrontend().globals.globalScope,
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getFrontend().globals.globalTypeFunctionScope,
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/*prepareModuleScope*/ nullptr,
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&logger,
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NotNull{dfg.get()},
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std::vector<RequireCycle>()
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);
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cg->visitModuleRoot(root);
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rootScope = cg->rootScope;
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constraints = Luau::borrowConstraints(cg->constraints);
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}
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void ConstraintGeneratorFixture::solve(const std::string& code)
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{
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generateConstraints(code);
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ConstraintSolver cs{
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NotNull{&normalizer},
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NotNull{simplifier.get()},
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NotNull{&typeFunctionRuntime},
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NotNull{rootScope},
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constraints,
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NotNull{&cg->scopeToFunction},
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"MainModule",
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NotNull(&moduleResolver),
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{},
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&logger,
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NotNull{dfg.get()},
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{}};
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cs.run();
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}
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} // namespace Luau
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