mirror of
https://github.com/luau-lang/luau.git
synced 2024-12-12 21:10:37 +00:00
a36a3c41cc
### What's New? * Fragment Autocomplete: a new API allows for type checking a small fragment of code against an existing file, significantly speeding up autocomplete performance in large files. ### New Solver * E-Graphs have landed: this is an ongoing approach to make the new type solver simplify types in a more consistent and principled manner, based on similar work (see: https://egraphs-good.github.io/). * Adds support for exporting / local user type functions (previously they were always exported). * Fixes a set of bugs in which the new solver will fail to complete inference for simple expressions with just literals and operators. ### General Updates * Requiring a path with a ".lua" or ".luau" extension will now have a bespoke error suggesting to remove said extension. * Fixes a bug in which whether two `Luau::Symbol`s are equal depends on whether the new solver is enabled. --- Internal Contributors: Co-authored-by: Aaron Weiss <aaronweiss@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: David Cope <dcope@roblox.com> Co-authored-by: Hunter Goldstein <hgoldstein@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>
1391 lines
51 KiB
C++
1391 lines
51 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 "ClassFixture.h"
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#include "Fixture.h"
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#include "doctest.h"
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using namespace Luau;
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LUAU_FASTFLAG(LuauSolverV2)
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LUAU_FASTFLAG(LuauUserDefinedTypeFunctionsSyntax2)
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LUAU_FASTFLAG(LuauUserDefinedTypeFunctions2)
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LUAU_FASTFLAG(LuauUserDefinedTypeFunctionNoEvaluation)
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LUAU_FASTFLAG(LuauUserTypeFunFixRegister)
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LUAU_FASTFLAG(LuauUserTypeFunFixNoReadWrite)
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LUAU_FASTFLAG(LuauUserTypeFunFixMetatable)
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LUAU_FASTFLAG(LuauUserDefinedTypeFunctionResetState)
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LUAU_FASTFLAG(LuauUserTypeFunNonstrict)
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LUAU_FASTFLAG(LuauUserTypeFunExportedAndLocal)
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LUAU_FASTFLAG(LuauUserDefinedTypeFunParseExport)
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TEST_SUITE_BEGIN("UserDefinedTypeFunctionTests");
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_nil_serialization_works")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function serialize_nil(arg)
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return arg
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end
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type type_being_serialized = nil
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local function ok(idx: serialize_nil<type_being_serialized>): nil return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_nil_methods_work")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function getnil()
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local ty = types.singleton(nil)
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if ty:is("nil") then
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return ty
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end
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-- this should never be returned
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return types.string
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end
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local function ok(idx: getnil<>): nil return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_unknown_serialization_works")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function serialize_unknown(arg)
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return arg
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end
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type type_being_serialized = unknown
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local function ok(idx: serialize_unknown<type_being_serialized>): unknown return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_unknown_methods_work")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function getunknown()
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local ty = types.unknown
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if ty:is("unknown") then
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return ty
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end
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-- this should never be returned
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return types.string
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end
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local function ok(idx: getunknown<>): unknown return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_never_serialization_works")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function serialize_never(arg)
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return arg
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end
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type type_being_serialized = never
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local function ok(idx: serialize_never<type_being_serialized>): never return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_never_methods_work")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function getnever()
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local ty = types.never
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if ty:is("never") then
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return ty
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end
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-- this should never be returned
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return types.string
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end
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local function ok(idx: getnever<>): never return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_any_serialization_works")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function serialize_any(arg)
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return arg
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end
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type type_being_serialized = any
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local function ok(idx: serialize_any<type_being_serialized>): any return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_any_methods_work")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function getany()
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local ty = types.any
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if ty:is("any") then
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return ty
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end
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-- this should never be returned
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return types.string
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end
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local function ok(idx: getany<>): any return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_boolean_serialization_works")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function serialize_bool(arg)
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return arg
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end
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type type_being_serialized = boolean
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local function ok(idx: serialize_bool<type_being_serialized>): boolean return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_boolean_methods_work")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function getboolean()
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local ty = types.boolean
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if ty:is("boolean") then
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return ty
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end
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-- this should never be returned
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return types.string
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end
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local function ok(idx: getboolean<>): boolean return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_number_serialization_works")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function serialize_num(arg)
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return arg
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end
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type type_being_serialized = number
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local function ok(idx: serialize_num<type_being_serialized>): number return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_number_methods_work")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function getnumber()
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local ty = types.number
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if ty:is("number") then
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return ty
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end
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-- this should never be returned
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return types.string
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end
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local function ok(idx: getnumber<>): number return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_string_serialization_works")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function serialize_str(arg)
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return arg
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end
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type type_being_serialized = string
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local function ok(idx: serialize_str<type_being_serialized>): string return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_string_methods_work")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function getstring()
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local ty = types.string
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if ty:is("string") then
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return ty
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end
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-- this should never be returned
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return types.boolean
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end
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local function ok(idx: getstring<>): string return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_boolsingleton_serialization_works")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function serialize_boolsingleton(arg)
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return arg
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end
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type type_being_serialized = true
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local function ok(idx: serialize_boolsingleton<type_being_serialized>): true return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_boolsingleton_methods_work")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function getboolsingleton()
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local ty = types.singleton(true)
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if ty:is("singleton") and ty:value() then
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return ty
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end
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-- this should never be returned
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return types.string
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end
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local function ok(idx: getboolsingleton<>): true return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_strsingleton_serialization_works")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function serialize_strsingleton(arg)
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return arg
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end
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type type_being_serialized = "popcorn and movies!"
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local function ok(idx: serialize_strsingleton<type_being_serialized>): "popcorn and movies!" return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_strsingleton_methods_work")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function getstrsingleton()
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local ty = types.singleton("hungry hippo")
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if ty:is("singleton") and ty:value() == "hungry hippo" then
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return ty
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end
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-- this should never be returned
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return types.number
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end
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local function ok(idx: getstrsingleton<>): "hungry hippo" return idx end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_union_serialization_works")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function serialize_union(arg)
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return arg
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end
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type type_being_serialized = number | string | boolean
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-- forcing an error here to check the exact type of the union
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local function ok(idx: serialize_union<type_being_serialized>): nil return idx end
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)");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
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REQUIRE(tpm);
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CHECK(toString(tpm->givenTp) == "boolean | number | string");
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_union_methods_work")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function getunion()
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local ty = types.unionof(types.string, types.number, types.boolean)
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if ty:is("union") then
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-- creating a copy of `ty`
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local arr = {}
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for _, value in ty:components() do
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table.insert(arr, value)
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end
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return types.unionof(table.unpack(arr))
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end
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-- this should never be returned
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return types.number
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end
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-- forcing an error here to check the exact type of the union
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local function ok(idx: getunion<>): never return idx end
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)");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
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REQUIRE(tpm);
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CHECK(toString(tpm->givenTp) == "boolean | number | string");
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_intersection_serialization_works")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function serialize_intersection(arg)
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return arg
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end
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type type_being_serialized = { boolean: boolean, number: number } & { boolean: boolean, string: string }
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-- forcing an error here to check the exact type of the intersection
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local function ok(idx: serialize_intersection<type_being_serialized>): nil return idx end
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)");
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LUAU_REQUIRE_ERROR_COUNT(1, result);
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TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
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REQUIRE(tpm);
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CHECK(toString(tpm->givenTp) == "{ boolean: boolean, number: number } & { boolean: boolean, string: string }");
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_intersection_methods_work")
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{
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ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
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ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
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ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
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CheckResult result = check(R"(
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type function getintersection()
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local tbl1 = types.newtable(nil, nil, nil)
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tbl1:setproperty(types.singleton("boolean"), types.boolean) -- {boolean: boolean}
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tbl1:setproperty(types.singleton("number"), types.number) -- {boolean: boolean, number: number}
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local tbl2 = types.newtable(nil, nil, nil)
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tbl2:setproperty(types.singleton("boolean"), types.boolean) -- {boolean: boolean}
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tbl2:setproperty(types.singleton("string"), types.string) -- {boolean: boolean, string: string}
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local ty = types.intersectionof(tbl1, tbl2)
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if ty:is("intersection") then
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-- creating a copy of `ty`
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local arr = {}
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for index, value in ty:components() do
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table.insert(arr, value)
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end
|
|
return types.intersectionof(table.unpack(arr))
|
|
end
|
|
-- this should never be returned
|
|
return types.string
|
|
end
|
|
-- forcing an error here to check the exact type of the intersection
|
|
local function ok(idx: getintersection<>): never return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "{ boolean: boolean, number: number } & { boolean: boolean, string: string }");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_negation_methods_work")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function getnegation()
|
|
local ty = types.negationof(types.string)
|
|
if ty:is("negation") then
|
|
return ty
|
|
end
|
|
-- this should never be returned
|
|
return types.number
|
|
end
|
|
|
|
-- forcing an error here to check the exact type of the negation
|
|
local function ok(idx: getnegation<>): never return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "~string");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_table_serialization_works")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function serialize_table(arg)
|
|
return arg
|
|
end
|
|
type type_being_serialized = { boolean: boolean, number: number, [string]: number }
|
|
-- forcing an error here to check the exact type of the table
|
|
local function ok(idx: serialize_table<type_being_serialized>): nil return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "{ [string]: number, boolean: boolean, number: number }");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_table_methods_work")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function gettable()
|
|
local indexer = {
|
|
index = types.number,
|
|
readresult = types.boolean,
|
|
writeresult = types.boolean,
|
|
}
|
|
local ty = types.newtable(nil, indexer, nil) -- {[number]: boolean}
|
|
ty:setproperty(types.singleton("string"), types.number) -- {string: number, [number] = boolean}
|
|
ty:setproperty(types.singleton("number"), types.string) -- {string: number, number: string, [number] = boolean}
|
|
ty:setproperty(types.singleton("string"), nil) -- {number: string, [number] = boolean}
|
|
local ret = types.newtable(nil, nil, nil) -- {}
|
|
-- creating a copy of `ty`
|
|
for k, v in ty:properties() do
|
|
ret:setreadproperty(k, v.read)
|
|
ret:setwriteproperty(k, v.write)
|
|
end
|
|
if ret:is("table") then
|
|
ret:setindexer(types.boolean, types.string) -- {number: string, [boolean] = string}
|
|
return ret -- {number: string, [boolean] = string}
|
|
end
|
|
-- this should never be returned
|
|
return types.number
|
|
end
|
|
-- forcing an error here to check the exact type of the table
|
|
local function ok(idx: gettable<>): never return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "{ [boolean]: string, number: string }");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_metatable_methods_work")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function getmetatable()
|
|
local indexer = {
|
|
index = types.number,
|
|
readresult = types.boolean,
|
|
writeresult = types.boolean,
|
|
}
|
|
local ty = types.newtable(nil, indexer, nil) -- {[number]: boolean}
|
|
ty:setproperty(types.singleton("string"), types.number) -- {string: number, [number]: boolean}
|
|
local metatbl = types.newtable(nil, nil, ty) -- { { }, @metatable { [number]: boolean, string: number } }
|
|
metatbl:setmetatable(types.newtable(nil, indexer, nil)) -- { { }, @metatable { [number]: boolean } }
|
|
local ret = metatbl:metatable()
|
|
if metatbl:is("table") and metatbl:metatable() then
|
|
return ret -- { @metatable { [number]: boolean } }
|
|
end
|
|
-- this should never be returned
|
|
return types.number
|
|
end
|
|
-- forcing an error here to check the exact type of the metatable
|
|
local function ok(idx: getmetatable<>): never return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "{boolean}");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_function_serialization_works")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function serialize_func(arg)
|
|
return arg
|
|
end
|
|
type type_being_serialized = (boolean, number, nil) -> (...string)
|
|
local function ok(idx: serialize_func<type_being_serialized>): (boolean, number, nil) -> (...string) return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_function_methods_work")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function getfunction()
|
|
local ty = types.newfunction(nil, nil) -- () -> ()
|
|
ty:setparameters({types.string, types.number}, nil) -- (string, number) -> ()
|
|
ty:setreturns(nil, types.boolean) -- (string, number) -> (...boolean)
|
|
if ty:is("function") then
|
|
-- creating a copy of `ty` parameters
|
|
local arr = {}
|
|
for index, val in ty:parameters().head do
|
|
table.insert(arr, val)
|
|
end
|
|
return types.newfunction({head = arr}, ty:returns()) -- (string, number) -> (...boolean)
|
|
end
|
|
-- this should never be returned
|
|
return types.number
|
|
end
|
|
local function ok(idx: getfunction<>): never return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "(string, number) -> (...boolean)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(ClassFixture, "udtf_class_serialization_works")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function serialize_class(arg)
|
|
return arg
|
|
end
|
|
local function ok(idx: serialize_class<BaseClass>): BaseClass return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(ClassFixture, "udtf_class_methods_works")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
|
|
CheckResult result = check(R"(
|
|
type function getclass(arg)
|
|
local props = arg:properties()
|
|
local indexer = arg:indexer()
|
|
local metatable = arg:metatable()
|
|
return types.newtable(props, indexer, metatable)
|
|
end
|
|
-- forcing an error here to check the exact type of the metatable
|
|
local function ok(idx: getclass<BaseClass>): nil return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "{ BaseField: number, read BaseMethod: (BaseClass, number) -> (), read Touched: Connection }");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(ClassFixture, "write_of_readonly_is_nil")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag udtfRwFix{FFlag::LuauUserTypeFunFixNoReadWrite, true};
|
|
|
|
|
|
CheckResult result = check(R"(
|
|
type function getclass(arg)
|
|
local props = arg:properties()
|
|
local table = types.newtable(props)
|
|
local singleton = types.singleton("BaseMethod")
|
|
|
|
if table:writeproperty(singleton) then
|
|
return types.singleton(true)
|
|
else
|
|
return types.singleton(false)
|
|
end
|
|
end
|
|
-- forcing an error here to check the exact type of the metatable
|
|
local function ok(idx: getclass<BaseClass>): nil return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "false");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_check_mutability")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function checkmut()
|
|
local indexer = {
|
|
index = types.number,
|
|
readresult = types.boolean,
|
|
writeresult = types.boolean,
|
|
}
|
|
local ty = types.newtable(props, indexer, nil) -- {[number]: boolean}
|
|
ty:setproperty(types.singleton("string"), types.number) -- {string: number, [number]: boolean}
|
|
local metatbl = types.newtable(nil, nil, ty) -- { { }, @metatable { [number]: boolean, string: number } }
|
|
-- mutate the table
|
|
ty:setproperty(types.singleton("string"), nil) -- {[number]: boolean}
|
|
if metatbl:is("table") and metatbl:metatable() then
|
|
return metatbl -- { @metatable { [number]: boolean }, { } }
|
|
end
|
|
-- this should never be returned
|
|
return types.number
|
|
end
|
|
local function ok(idx: checkmut<>): never return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "{ @metatable {boolean}, { } }");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_copy_works")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function getcopy()
|
|
local indexer = {
|
|
index = types.number,
|
|
readresult = types.boolean,
|
|
writeresult = types.boolean,
|
|
}
|
|
local ty = types.newtable(nil, indexer, nil) -- {[number]: boolean}
|
|
ty:setproperty(types.singleton("string"), types.number) -- {string: number, [number]: boolean}
|
|
local metaty = types.newtable(nil, nil, ty) -- { { }, @metatable { [number]: boolean, string: number } }
|
|
local copy = types.copy(metaty)
|
|
-- mutate the table
|
|
ty:setproperty(types.singleton("string"), nil) -- {[number]: boolean}
|
|
if copy:is("table") and copy:metatable() then
|
|
return copy -- { { }, @metatable { [number]: boolean, string: number } }
|
|
end
|
|
-- this should never be returned
|
|
return types.number
|
|
end
|
|
local function ok(idx: getcopy<>): never return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "{ @metatable { [number]: boolean, string: number }, { } }");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_simple_cyclic_serialization_works")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function serialize_cycle(arg)
|
|
return arg
|
|
end
|
|
type basety = {
|
|
first: basety2
|
|
}
|
|
type basety2 = {
|
|
second: basety
|
|
}
|
|
local function ok(idx: serialize_cycle<basety>): basety return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_createtable_bad_metatable")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function badmetatable()
|
|
return types.newtable(nil, nil, types.number)
|
|
end
|
|
local function bad(arg: badmetatable<>) end
|
|
)");
|
|
|
|
LUAU_CHECK_ERROR_COUNT(4, result); // There are 2 type function uninhabited error, 2 user defined type function error
|
|
UserDefinedTypeFunctionError* e = get<UserDefinedTypeFunctionError>(result.errors[0]);
|
|
REQUIRE(e);
|
|
CHECK(
|
|
e->message == "'badmetatable' type function errored at runtime: [string \"badmetatable\"]:3: types.newtable: expected to be given a table "
|
|
"type as a metatable, but got number instead"
|
|
);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_complex_cyclic_serialization_works")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function serialize_cycle2(arg)
|
|
return arg
|
|
end
|
|
type Employee = {
|
|
name: string,
|
|
department: Department?
|
|
}
|
|
type Department = {
|
|
name: string,
|
|
manager: Employee?,
|
|
employees: { Employee },
|
|
company: Company?
|
|
}
|
|
type Company = {
|
|
name: string,
|
|
departments: { Department }
|
|
}
|
|
local function ok(idx: serialize_cycle2<Company>): Company return idx end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_user_error_is_reported")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function errors_if_string(arg)
|
|
if arg:is("string") then
|
|
local a = 1
|
|
error("We are in a math class! not english")
|
|
end
|
|
return arg
|
|
end
|
|
local function ok(idx: errors_if_string<string>): nil return idx end
|
|
)");
|
|
|
|
LUAU_CHECK_ERROR_COUNT(4, result); // There are 2 type function uninhabited error, 2 user defined type function error
|
|
UserDefinedTypeFunctionError* e = get<UserDefinedTypeFunctionError>(result.errors[0]);
|
|
REQUIRE(e);
|
|
CHECK(e->message == "'errors_if_string' type function errored at runtime: [string \"errors_if_string\"]:5: We are in a math class! not english");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_type_overrides_call_metamethod")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function hello(arg)
|
|
error(type(arg))
|
|
end
|
|
local function ok(idx: hello<string>): nil return idx end
|
|
)");
|
|
|
|
LUAU_CHECK_ERROR_COUNT(4, result); // There are 2 type function uninhabited error, 2 user defined type function error
|
|
UserDefinedTypeFunctionError* e = get<UserDefinedTypeFunctionError>(result.errors[0]);
|
|
REQUIRE(e);
|
|
CHECK(e->message == "'hello' type function errored at runtime: [string \"hello\"]:3: userdata");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_type_overrides_eq_metamethod")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function hello()
|
|
local p1 = types.string
|
|
local p2 = types.string
|
|
local t1 = types.newtable(nil, nil, nil)
|
|
t1:setproperty(types.singleton("string"), types.boolean)
|
|
t1:setmetatable(t1)
|
|
local t2 = types.newtable(nil, nil, nil)
|
|
t2:setproperty(types.singleton("string"), types.boolean)
|
|
t1:setmetatable(t1)
|
|
if p1 == p2 and t1 == t2 then
|
|
return types.number
|
|
end
|
|
end
|
|
local function ok(idx: hello<>): number return idx end
|
|
)");
|
|
|
|
LUAU_CHECK_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_function_type_cant_call_get_props")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function hello(arg)
|
|
local arr = arg:properties()
|
|
end
|
|
local function ok(idx: hello<() -> ()>): nil return idx end
|
|
)");
|
|
|
|
LUAU_CHECK_ERROR_COUNT(4, result); // There are 2 type function uninhabited error, 2 user defined type function error
|
|
UserDefinedTypeFunctionError* e = get<UserDefinedTypeFunctionError>(result.errors[0]);
|
|
REQUIRE(e);
|
|
CHECK(
|
|
e->message == "'hello' type function errored at runtime: [string \"hello\"]:3: type.properties: expected self to be either a table or class, "
|
|
"but got function instead"
|
|
);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_calling_each_other")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function foo()
|
|
return "hi"
|
|
end
|
|
type function bar()
|
|
return types.singleton(foo())
|
|
end
|
|
local function ok(idx: bar<>): nil return idx end
|
|
)");
|
|
|
|
LUAU_CHECK_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "\"hi\"");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_no_shared_state")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function foo()
|
|
if not glob then
|
|
glob = 'a'
|
|
else
|
|
glob ..= 'b'
|
|
end
|
|
|
|
return glob
|
|
end
|
|
type function bar(prefix)
|
|
return types.singleton(prefix:value() .. foo())
|
|
end
|
|
local function ok1(idx: bar<'x'>): nil return idx end
|
|
local function ok2(idx: bar<'y'>): nil return idx end
|
|
)");
|
|
|
|
// We are only checking first errors, others are mostly duplicates
|
|
LUAU_CHECK_ERROR_COUNT(8, result);
|
|
CHECK(toString(result.errors[0]) == R"('bar' type function errored at runtime: [string "foo"]:4: attempt to modify a readonly table)");
|
|
CHECK(toString(result.errors[1]) == R"(Type function instance bar<"x"> is uninhabited)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_math_reset")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag luauUserDefinedTypeFunctionResetState{FFlag::LuauUserDefinedTypeFunctionResetState, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function foo(x)
|
|
return types.singleton(tostring(math.random(1, 100)))
|
|
end
|
|
local x: foo<'a'> = ('' :: any) :: foo<'b'>
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_optionify")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function optionify(tbl)
|
|
if not tbl:is("table") then
|
|
error("Argument is not a table")
|
|
end
|
|
for k, v in tbl:properties() do
|
|
tbl:setproperty(k, types.unionof(v.read, types.singleton(nil)))
|
|
end
|
|
return tbl
|
|
end
|
|
type Person = {
|
|
name: string,
|
|
age: number,
|
|
alive: boolean
|
|
}
|
|
local function ok(idx: optionify<Person>): nil return idx end
|
|
)");
|
|
|
|
LUAU_CHECK_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "{ age: number?, alive: boolean?, name: string? }");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_calling_illegal_global")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function illegal(arg)
|
|
gcinfo() -- this should error
|
|
|
|
return arg -- this should not be reached
|
|
end
|
|
|
|
local function ok(idx: illegal<number>): nil return idx end
|
|
)");
|
|
|
|
LUAU_CHECK_ERROR_COUNT(4, result); // There are 2 type function uninhabited error, 2 user defined type function error
|
|
UserDefinedTypeFunctionError* e = get<UserDefinedTypeFunctionError>(result.errors[0]);
|
|
REQUIRE(e);
|
|
CHECK(e->message == "'illegal' type function errored at runtime: [string \"illegal\"]:3: this function is not supported in type functions");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_recursion_and_gc")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function foo(tbl)
|
|
local count = 0
|
|
for k,v in tbl:properties() do count += 1 end
|
|
if count < 100 then
|
|
tbl:setproperty(types.singleton(`m{count}`), types.string)
|
|
foo(tbl)
|
|
end
|
|
for i = 1,100 do table.create(10000) end
|
|
return tbl
|
|
end
|
|
type Test = {}
|
|
local function ok(idx: foo<Test>): nil return idx end
|
|
)");
|
|
|
|
LUAU_CHECK_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_recovery_no_upvalues")
|
|
{
|
|
ScopedFastFlag solverV2{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag userDefinedTypeFunctionsSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag userDefinedTypeFunctions{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag userDefinedTypeFunctionNoEvaluation{FFlag::LuauUserDefinedTypeFunctionNoEvaluation, true};
|
|
|
|
CheckResult result = check(R"(
|
|
local var
|
|
|
|
type function save_upvalue(arg)
|
|
var = 1
|
|
return arg
|
|
end
|
|
|
|
type test = "test"
|
|
local function ok(idx: save_upvalue<test>): "test"
|
|
return idx
|
|
end
|
|
)");
|
|
|
|
LUAU_CHECK_ERROR_COUNT(1, result);
|
|
CHECK(toString(result.errors[0]) == R"(Type function cannot reference outer local 'var')");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_follow")
|
|
{
|
|
ScopedFastFlag solverV2{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag userDefinedTypeFunctionsSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag userDefinedTypeFunctions{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type t0 = any
|
|
type function t0()
|
|
return types.any
|
|
end
|
|
)");
|
|
|
|
LUAU_CHECK_ERROR_COUNT(1, result);
|
|
CHECK(toString(result.errors[0]) == R"(Redefinition of type 't0', previously defined at line 2)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "udtf_strip_indexer")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function stripindexer(tbl)
|
|
if not tbl:is("table") then
|
|
error("can only strip the indexer on a table!")
|
|
end
|
|
tbl:setindexer(types.never, types.never)
|
|
return tbl
|
|
end
|
|
|
|
type map = { [number]: string, foo: string }
|
|
-- forcing an error here to check the exact type
|
|
local function ok(tbl: stripindexer<map>): never return tbl end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
TypePackMismatch* tpm = get<TypePackMismatch>(result.errors[0]);
|
|
REQUIRE(tpm);
|
|
CHECK(toString(tpm->givenTp) == "{ foo: string }");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "no_type_methods_on_types")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag luauUserTypeFunFixRegister{FFlag::LuauUserTypeFunFixRegister, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function test(x)
|
|
return if types.is(x, "number") then types.string else types.boolean
|
|
end
|
|
local function ok(tbl: test<number>): never return tbl end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(4, result);
|
|
CHECK(toString(result.errors[0]) == R"('test' type function errored at runtime: [string "test"]:3: attempt to call a nil value)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "no_types_functions_on_type")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag luauUserTypeFunFixRegister{FFlag::LuauUserTypeFunFixRegister, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function test(x)
|
|
return x.singleton("a")
|
|
end
|
|
local function ok(tbl: test<number>): never return tbl end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(4, result);
|
|
CHECK(toString(result.errors[0]) == R"('test' type function errored at runtime: [string "test"]:3: attempt to call a nil value)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "no_metatable_writes")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag luauUserTypeFunFixRegister{FFlag::LuauUserTypeFunFixRegister, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function test(x)
|
|
local a = x.__index
|
|
a.is = function() return false end
|
|
return types.singleton(x.is("number"))
|
|
end
|
|
local function ok(tbl: test<number>): never return tbl end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(4, result);
|
|
CHECK(toString(result.errors[0]) == R"('test' type function errored at runtime: [string "test"]:4: attempt to index nil with 'is')");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "no_eq_field")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag luauUserTypeFunFixRegister{FFlag::LuauUserTypeFunFixRegister, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function test(x)
|
|
return types.singleton(x.__eq(x, types.number))
|
|
end
|
|
local function ok(tbl: test<number>): never return tbl end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(4, result);
|
|
CHECK(toString(result.errors[0]) == R"('test' type function errored at runtime: [string "test"]:3: attempt to call a nil value)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "tag_field")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag luauUserTypeFunFixRegister{FFlag::LuauUserTypeFunFixRegister, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function test(x)
|
|
return types.singleton(x.tag)
|
|
end
|
|
|
|
local function ok1(tbl: test<number>): never return tbl end
|
|
local function ok2(tbl: test<string>): never return tbl end
|
|
local function ok3(tbl: test<{}>): never return tbl end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(3, result);
|
|
CHECK(toString(result.errors[0]) == R"(Type pack '"number"' could not be converted into 'never'; at [0], "number" is not a subtype of never)");
|
|
CHECK(toString(result.errors[1]) == R"(Type pack '"string"' could not be converted into 'never'; at [0], "string" is not a subtype of never)");
|
|
CHECK(toString(result.errors[2]) == R"(Type pack '"table"' could not be converted into 'never'; at [0], "table" is not a subtype of never)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "metatable_serialization")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag luauUserTypeFunFixRegister{FFlag::LuauUserTypeFunFixRegister, true};
|
|
ScopedFastFlag luauUserTypeFunFixMetatable{FFlag::LuauUserTypeFunFixMetatable, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function makemttbl()
|
|
local metaprops = {
|
|
[types.singleton("ma")] = types.boolean
|
|
}
|
|
local mt = types.newtable(metaprops)
|
|
|
|
local props = {
|
|
[types.singleton("a")] = types.number
|
|
}
|
|
return types.newtable(props, nil, mt)
|
|
end
|
|
|
|
type function id(x)
|
|
return x
|
|
end
|
|
|
|
local a: number = {} :: id<makemttbl<>>
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERROR_COUNT(1, result);
|
|
CHECK(toString(result.errors[0]) == R"(Type '{ @metatable { ma: boolean }, { a: number } }' could not be converted into 'number')");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "nonstrict_mode")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag luauUserTypeFunFixRegister{FFlag::LuauUserTypeFunFixRegister, true};
|
|
ScopedFastFlag luauUserTypeFunNonstrict{FFlag::LuauUserTypeFunNonstrict, true};
|
|
|
|
CheckResult result = check(R"(
|
|
--!nonstrict
|
|
type function foo() return types.string end
|
|
local a: foo<> = "a"
|
|
)");
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "implicit_export")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag luauUserTypeFunFixRegister{FFlag::LuauUserTypeFunFixRegister, true};
|
|
ScopedFastFlag luauUserTypeFunExportedAndLocal{FFlag::LuauUserTypeFunExportedAndLocal, true};
|
|
|
|
fileResolver.source["game/A"] = R"(
|
|
type function concat(a, b)
|
|
return types.singleton(a:value() .. b:value())
|
|
end
|
|
export type Concat<T, U> = concat<T, U>
|
|
local a: concat<'first', 'second'>
|
|
return {}
|
|
)";
|
|
|
|
CheckResult aResult = frontend.check("game/A");
|
|
LUAU_REQUIRE_NO_ERRORS(aResult);
|
|
|
|
CHECK(toString(requireType("game/A", "a")) == R"("firstsecond")");
|
|
|
|
CheckResult bResult = check(R"(
|
|
local Test = require(game.A);
|
|
local b: Test.Concat<'third', 'fourth'>
|
|
)");
|
|
LUAU_REQUIRE_NO_ERRORS(bResult);
|
|
|
|
CHECK(toString(requireType("b")) == R"("thirdfourth")");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "local_scope")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag luauUserTypeFunFixRegister{FFlag::LuauUserTypeFunFixRegister, true};
|
|
ScopedFastFlag luauUserTypeFunExportedAndLocal{FFlag::LuauUserTypeFunExportedAndLocal, true};
|
|
|
|
CheckResult result = check(R"(
|
|
type function foo()
|
|
return "hi"
|
|
end
|
|
local function test()
|
|
type function bar()
|
|
return types.singleton(foo())
|
|
end
|
|
|
|
return ("" :: any) :: bar<>
|
|
end
|
|
local a = test()
|
|
)");
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK(toString(requireType("a")) == R"("hi")");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "explicit_export")
|
|
{
|
|
ScopedFastFlag newSolver{FFlag::LuauSolverV2, true};
|
|
ScopedFastFlag udtfSyntax{FFlag::LuauUserDefinedTypeFunctionsSyntax2, true};
|
|
ScopedFastFlag udtf{FFlag::LuauUserDefinedTypeFunctions2, true};
|
|
ScopedFastFlag luauUserTypeFunFixRegister{FFlag::LuauUserTypeFunFixRegister, true};
|
|
ScopedFastFlag luauUserTypeFunExportedAndLocal{FFlag::LuauUserTypeFunExportedAndLocal, true};
|
|
ScopedFastFlag luauUserDefinedTypeFunParseExport{FFlag::LuauUserDefinedTypeFunParseExport, true};
|
|
|
|
fileResolver.source["game/A"] = R"(
|
|
export type function concat(a, b)
|
|
return types.singleton(a:value() .. b:value())
|
|
end
|
|
local a: concat<'first', 'second'>
|
|
return {}
|
|
)";
|
|
|
|
CheckResult aResult = frontend.check("game/A");
|
|
LUAU_REQUIRE_NO_ERRORS(aResult);
|
|
|
|
CHECK(toString(requireType("game/A", "a")) == R"("firstsecond")");
|
|
|
|
CheckResult bResult = check(R"(
|
|
local Test = require(game.A);
|
|
local b: Test.concat<'third', 'fourth'>
|
|
)");
|
|
LUAU_REQUIRE_NO_ERRORS(bResult);
|
|
|
|
CHECK(toString(requireType("b")) == R"("thirdfourth")");
|
|
}
|
|
|
|
TEST_SUITE_END();
|