mirror of
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>
104 lines
2.4 KiB
C++
104 lines
2.4 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 "Luau/AstQuery.h"
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#include "Luau/BuiltinDefinitions.h"
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#include "Luau/Scope.h"
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#include "Luau/TypeInfer.h"
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#include "Luau/Type.h"
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#include "Luau/VisitType.h"
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#include "Fixture.h"
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#include "DiffAsserts.h"
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#include "doctest.h"
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using namespace Luau;
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TEST_SUITE_BEGIN("TypeInferPrimitives");
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TEST_CASE_FIXTURE(Fixture, "cannot_call_primitives")
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{
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CheckResult result = check("local foo = 5 foo()");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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REQUIRE(get<CannotCallNonFunction>(result.errors[0]) != nullptr);
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}
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TEST_CASE_FIXTURE(Fixture, "string_length")
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{
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CheckResult result = check(R"(
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local s = "Hello, World!"
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local t = #s
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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CHECK_EQ_DIFF(builtinTypes->numberType, requireType("t"));
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}
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TEST_CASE_FIXTURE(Fixture, "string_index")
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{
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CheckResult result = check(R"(
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local s = "Hello, World!"
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local t = s[4]
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)");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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NotATable* nat = get<NotATable>(result.errors[0]);
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REQUIRE(nat);
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CHECK_EQ("string", toString(nat->ty));
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CHECK_EQ("*error-type*", toString(requireType("t")));
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}
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TEST_CASE_FIXTURE(Fixture, "string_method")
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{
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CheckResult result = check(R"(
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local p = ("tacos"):len()
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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CHECK_EQ(*requireType("p"), *builtinTypes->numberType);
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}
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TEST_CASE_FIXTURE(Fixture, "string_function_indirect")
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{
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CheckResult result = check(R"(
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local s:string
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local l = s.lower
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local p = l(s)
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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CHECK_EQ(*requireType("p"), *builtinTypes->stringType);
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}
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TEST_CASE_FIXTURE(Fixture, "CheckMethodsOfNumber")
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{
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CheckResult result = check(R"(
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local x: number = 9999
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function x:y(z: number)
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local s: string = z
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end
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)");
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LUAU_REQUIRE_ERROR_COUNT(2, result);
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CHECK_EQ(toString(result.errors[0]), "Cannot add method to non-table type 'number'");
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CHECK_EQ(toString(result.errors[1]), "Type 'number' could not be converted into 'string'");
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}
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TEST_CASE("singleton_types")
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{
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BuiltinsFixture a;
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{
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BuiltinsFixture b;
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}
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// Check that Frontend 'a' environment wasn't modified by 'b'
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CheckResult result = a.check("local s: string = 'hello' local t = s:lower()");
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CHECK(result.errors.empty());
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}
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TEST_SUITE_END();
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