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7105c81579
# What's changed? * Fixed a bug in type cloning by maintaining persistent types. * We now parse imprecise integer literals to report the imprecision as a warning to developers. * Add a compiler flag to specify the name of the statistics output file. ### New type solver * Renamed `ConstraintGraphBuilder` to `ConstraintGenerator` * LValues now take into account the type being assigned during constraint generation. * Normalization performance has been improved by 33% by replacing the an internal usage of `std::unordered_set` with `DenseHashMap`. * Normalization now has a helper to identify types that are equivalent to `unknown`, which is being used to fix some bugs in subtyping. * Uses of the old unifier in the new type solver have been eliminated. * Improved error explanations for subtyping errors in `TypeChecker2`. ### Native code generation * Expanded some of the statistics recorded during compilation to include the number of instructions and blocks. * Introduce instruction and block count limiters for controlling what bytecode is translated into native code. * Implement code generation for byteswap instruction. ### 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: Lily Brown <lbrown@roblox.com>
70 lines
1.5 KiB
C++
70 lines
1.5 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 "Fixture.h"
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#include "doctest.h"
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LUAU_FASTFLAG(DebugLuauDeferredConstraintResolution);
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using namespace Luau;
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static TypeId requireBinding(Scope* scope, const char* name)
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{
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auto b = linearSearchForBinding(scope, name);
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LUAU_ASSERT(b.has_value());
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return *b;
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}
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TEST_SUITE_BEGIN("ConstraintSolver");
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TEST_CASE_FIXTURE(ConstraintGeneratorFixture, "hello")
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{
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solve(R"(
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local a = 55
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local b = a
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)");
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TypeId bType = requireBinding(rootScope, "b");
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CHECK("number" == toString(bType));
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}
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TEST_CASE_FIXTURE(ConstraintGeneratorFixture, "generic_function")
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{
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solve(R"(
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local function id(a)
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return a
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end
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)");
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TypeId idType = requireBinding(rootScope, "id");
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CHECK("<a>(a) -> a" == toString(idType));
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}
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TEST_CASE_FIXTURE(ConstraintGeneratorFixture, "proper_let_generalization")
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{
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solve(R"(
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local function a(c)
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local function d(e)
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return c
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end
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return d
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end
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local b = a(5)
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)");
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TypeId idType = requireBinding(rootScope, "b");
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ToStringOptions opts;
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if (FFlag::DebugLuauDeferredConstraintResolution)
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CHECK("(unknown) -> number" == toString(idType, opts));
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else
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CHECK("<a>(a) -> number" == toString(idType, opts));
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}
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TEST_SUITE_END();
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