mirror of
https://github.com/luau-lang/luau.git
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4b267aa5c5
* Added a limit on how many instructions the Compiler can safely produce (reported by @TheGreatSageEqualToHeaven) C++ API Changes: * With work started on read-only and write-only properties, `Property::type` member variable has been replaced with `TypeId type()` and `setType(TypeId)` functions. * New `LazyType` unwrap callback now has a `void` return type, all that's required from the callback is to write into `unwrapped` field. In our work on the new type solver, the following issues were fixed: * Work has started to support https://github.com/Roblox/luau/pull/77 and https://github.com/Roblox/luau/pull/79 * Refinements are no longer applied on l-values, removing some false-positive errors * Improved overload resolution against expected result type * `Frontend::prepareModuleScope` now works in the new solver * Cofinite strings are now comparable And these are the changes in native code generation (JIT): * Fixed MIN_NUM and MAX_NUM constant fold when one of the arguments is NaN * Added constant folding for number conversions and bit operations * Value spilling and rematerialization is now supported on arm64 * Improved FASTCALL2K IR generation to support second argument constant * Added value numbering and load/store propagation optimizations * Added STORE_VECTOR on arm64, completing the IR lowering on this target
833 lines
25 KiB
C++
833 lines
25 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/Scope.h"
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#include "Luau/ToString.h"
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#include "Fixture.h"
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#include "ScopedFlags.h"
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#include "doctest.h"
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using namespace Luau;
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LUAU_FASTFLAG(LuauRecursiveTypeParameterRestriction);
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TEST_SUITE_BEGIN("ToString");
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TEST_CASE_FIXTURE(Fixture, "primitive")
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{
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CheckResult result = check("local a = nil local b = 44 local c = 'lalala' local d = true");
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LUAU_REQUIRE_NO_ERRORS(result);
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// A variable without an annotation and with a nil literal should infer as 'free', not 'nil'
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CHECK_NE("nil", toString(requireType("a")));
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CHECK_EQ("number", toString(requireType("b")));
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CHECK_EQ("string", toString(requireType("c")));
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CHECK_EQ("boolean", toString(requireType("d")));
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}
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TEST_CASE_FIXTURE(Fixture, "bound_types")
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{
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CheckResult result = check("local a = 444 local b = a");
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LUAU_REQUIRE_NO_ERRORS(result);
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CHECK_EQ("number", toString(requireType("b")));
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}
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TEST_CASE_FIXTURE(Fixture, "free_types")
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{
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CheckResult result = check("local a");
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LUAU_REQUIRE_NO_ERRORS(result);
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CHECK_EQ("a", toString(requireType("a")));
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}
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TEST_CASE_FIXTURE(Fixture, "cyclic_table")
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{
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Type cyclicTable{TypeVariant(TableType())};
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TableType* tableOne = getMutable<TableType>(&cyclicTable);
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tableOne->props["self"] = {&cyclicTable};
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CHECK_EQ("t1 where t1 = { self: t1 }", toString(&cyclicTable));
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}
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TEST_CASE_FIXTURE(Fixture, "named_table")
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{
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Type table{TypeVariant(TableType())};
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TableType* t = getMutable<TableType>(&table);
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t->name = "TheTable";
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CHECK_EQ("TheTable", toString(&table));
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}
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TEST_CASE_FIXTURE(Fixture, "empty_table")
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{
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CheckResult result = check(R"(
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local a: {}
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)");
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CHECK_EQ("{| |}", toString(requireType("a")));
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// Should stay the same with useLineBreaks enabled
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ToStringOptions opts;
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opts.useLineBreaks = true;
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CHECK_EQ("{| |}", toString(requireType("a"), opts));
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}
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TEST_CASE_FIXTURE(Fixture, "table_respects_use_line_break")
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{
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CheckResult result = check(R"(
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local a: { prop: string, anotherProp: number, thirdProp: boolean }
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)");
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ToStringOptions opts;
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opts.useLineBreaks = true;
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//clang-format off
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CHECK_EQ("{|\n"
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" anotherProp: number,\n"
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" prop: string,\n"
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" thirdProp: boolean\n"
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"|}",
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toString(requireType("a"), opts));
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//clang-format on
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}
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TEST_CASE_FIXTURE(Fixture, "nil_or_nil_is_nil_not_question_mark")
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{
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CheckResult result = check(R"(
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type nil_ty = nil | nil
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local a : nil_ty = nil
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)");
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ToStringOptions opts;
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opts.useLineBreaks = false;
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CHECK_EQ("nil", toString(requireType("a"), opts));
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}
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TEST_CASE_FIXTURE(Fixture, "long_disjunct_of_nil_is_nil_not_question_mark")
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{
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CheckResult result = check(R"(
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type nil_ty = nil | nil | nil | nil | nil
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local a : nil_ty = nil
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)");
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ToStringOptions opts;
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opts.useLineBreaks = false;
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CHECK_EQ("nil", toString(requireType("a"), opts));
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}
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TEST_CASE_FIXTURE(Fixture, "metatable")
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{
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Type table{TypeVariant(TableType())};
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Type metatable{TypeVariant(TableType())};
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Type mtv{TypeVariant(MetatableType{&table, &metatable})};
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CHECK_EQ("{ @metatable { }, { } }", toString(&mtv));
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}
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TEST_CASE_FIXTURE(Fixture, "named_metatable")
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{
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Type table{TypeVariant(TableType())};
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Type metatable{TypeVariant(TableType())};
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Type mtv{TypeVariant(MetatableType{&table, &metatable, "NamedMetatable"})};
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CHECK_EQ("NamedMetatable", toString(&mtv));
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "named_metatable_toStringNamedFunction")
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{
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CheckResult result = check(R"(
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local function createTbl(): NamedMetatable
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return setmetatable({}, {})
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end
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type NamedMetatable = typeof(createTbl())
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)");
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TypeId ty = requireType("createTbl");
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const FunctionType* ftv = get<FunctionType>(follow(ty));
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REQUIRE(ftv);
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CHECK_EQ("createTbl(): NamedMetatable", toStringNamedFunction("createTbl", *ftv));
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}
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TEST_CASE_FIXTURE(BuiltinsFixture, "exhaustive_toString_of_cyclic_table")
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{
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CheckResult result = check(R"(
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--!strict
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local Vec3 = {}
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Vec3.__index = Vec3
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function Vec3.new()
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return setmetatable({x=0, y=0, z=0}, Vec3)
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end
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export type Vec3 = typeof(Vec3.new())
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local thefun: any = function(self, o) return self end
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local multiply: ((Vec3, Vec3) -> Vec3) & ((Vec3, number) -> Vec3) = thefun
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Vec3.__mul = multiply
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local a = Vec3.new()
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)");
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std::string a = toString(requireType("a"), {true});
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CHECK_EQ(std::string::npos, a.find("CYCLE"));
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CHECK_EQ(std::string::npos, a.find("TRUNCATED"));
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//clang-format off
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CHECK_EQ("t2 where "
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"t1 = { __index: t1, __mul: ((t2, number) -> t2) & ((t2, t2) -> t2), new: () -> t2 } ; "
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"t2 = { @metatable t1, {| x: number, y: number, z: number |} }",
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a);
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//clang-format on
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}
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TEST_CASE_FIXTURE(Fixture, "intersection_parenthesized_only_if_needed")
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{
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auto utv = Type{UnionType{{builtinTypes->numberType, builtinTypes->stringType}}};
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auto itv = Type{IntersectionType{{&utv, builtinTypes->booleanType}}};
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CHECK_EQ(toString(&itv), "(number | string) & boolean");
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}
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TEST_CASE_FIXTURE(Fixture, "union_parenthesized_only_if_needed")
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{
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auto itv = Type{IntersectionType{{builtinTypes->numberType, builtinTypes->stringType}}};
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auto utv = Type{UnionType{{&itv, builtinTypes->booleanType}}};
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CHECK_EQ(toString(&utv), "(number & string) | boolean");
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}
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TEST_CASE_FIXTURE(Fixture, "functions_are_always_parenthesized_in_unions_or_intersections")
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{
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auto stringAndNumberPack = TypePackVar{TypePack{{builtinTypes->stringType, builtinTypes->numberType}}};
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auto numberAndStringPack = TypePackVar{TypePack{{builtinTypes->numberType, builtinTypes->stringType}}};
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auto sn2ns = Type{FunctionType{&stringAndNumberPack, &numberAndStringPack}};
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auto ns2sn = Type{FunctionType(frontend.globals.globalScope->level, &numberAndStringPack, &stringAndNumberPack)};
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auto utv = Type{UnionType{{&ns2sn, &sn2ns}}};
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auto itv = Type{IntersectionType{{&ns2sn, &sn2ns}}};
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CHECK_EQ(toString(&utv), "((number, string) -> (string, number)) | ((string, number) -> (number, string))");
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CHECK_EQ(toString(&itv), "((number, string) -> (string, number)) & ((string, number) -> (number, string))");
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}
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TEST_CASE_FIXTURE(Fixture, "intersections_respects_use_line_breaks")
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{
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CheckResult result = check(R"(
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local a: ((string) -> string) & ((number) -> number)
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)");
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ToStringOptions opts;
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opts.useLineBreaks = true;
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//clang-format off
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CHECK_EQ("((number) -> number)\n"
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"& ((string) -> string)",
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toString(requireType("a"), opts));
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//clang-format on
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}
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TEST_CASE_FIXTURE(Fixture, "unions_respects_use_line_breaks")
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{
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CheckResult result = check(R"(
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local a: string | number | boolean
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)");
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ToStringOptions opts;
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opts.useLineBreaks = true;
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//clang-format off
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CHECK_EQ("boolean\n"
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"| number\n"
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"| string",
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toString(requireType("a"), opts));
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//clang-format on
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}
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TEST_CASE_FIXTURE(Fixture, "quit_stringifying_table_type_when_length_is_exceeded")
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{
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TableType ttv{};
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for (char c : std::string("abcdefghijklmno"))
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ttv.props[std::string(1, c)] = {builtinTypes->numberType};
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Type tv{ttv};
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ToStringOptions o;
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o.exhaustive = false;
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o.maxTableLength = 40;
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CHECK_EQ(toString(&tv, o), "{ a: number, b: number, c: number, d: number, e: number, ... 10 more ... }");
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}
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TEST_CASE_FIXTURE(Fixture, "stringifying_table_type_is_still_capped_when_exhaustive")
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{
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TableType ttv{};
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for (char c : std::string("abcdefg"))
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ttv.props[std::string(1, c)] = {builtinTypes->numberType};
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Type tv{ttv};
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ToStringOptions o;
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o.exhaustive = true;
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o.maxTableLength = 40;
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CHECK_EQ(toString(&tv, o), "{ a: number, b: number, c: number, d: number, e: number, ... 2 more ... }");
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}
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TEST_CASE_FIXTURE(Fixture, "quit_stringifying_type_when_length_is_exceeded")
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{
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CheckResult result = check(R"(
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function f0() end
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function f1(f) return f or f0 end
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function f2(f) return f or f1 end
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function f3(f) return f or f2 end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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ToStringOptions o;
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o.exhaustive = false;
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if (FFlag::DebugLuauDeferredConstraintResolution)
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{
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o.maxTypeLength = 30;
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CHECK_EQ(toString(requireType("f0"), o), "() -> ()");
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CHECK_EQ(toString(requireType("f1"), o), "<a>(a) -> (() -> ()) | (a & ~false & ~nil)... *TRUNCATED*");
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CHECK_EQ(toString(requireType("f2"), o), "<b>(b) -> (<a>(a) -> (() -> ()) | (a & ~false & ~nil)... *TRUNCATED*");
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CHECK_EQ(toString(requireType("f3"), o), "<c>(c) -> (<b>(b) -> (<a>(a) -> (() -> ()) | (a & ~false & ~nil)... *TRUNCATED*");
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}
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else
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{
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o.maxTypeLength = 40;
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CHECK_EQ(toString(requireType("f0"), o), "() -> ()");
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CHECK_EQ(toString(requireType("f1"), o), "(() -> ()) -> () -> ()");
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CHECK_EQ(toString(requireType("f2"), o), "((() -> ()) -> () -> ()) -> (() -> ()) -> ... *TRUNCATED*");
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CHECK_EQ(toString(requireType("f3"), o), "(((() -> ()) -> () -> ()) -> (() -> ()) -> ... *TRUNCATED*");
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}
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}
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TEST_CASE_FIXTURE(Fixture, "stringifying_type_is_still_capped_when_exhaustive")
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{
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CheckResult result = check(R"(
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function f0() end
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function f1(f) return f or f0 end
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function f2(f) return f or f1 end
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function f3(f) return f or f2 end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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ToStringOptions o;
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o.exhaustive = true;
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if (FFlag::DebugLuauDeferredConstraintResolution)
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{
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o.maxTypeLength = 30;
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CHECK_EQ(toString(requireType("f0"), o), "() -> ()");
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CHECK_EQ(toString(requireType("f1"), o), "<a>(a) -> (() -> ()) | (a & ~false & ~nil)... *TRUNCATED*");
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CHECK_EQ(toString(requireType("f2"), o), "<b>(b) -> (<a>(a) -> (() -> ()) | (a & ~false & ~nil)... *TRUNCATED*");
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CHECK_EQ(toString(requireType("f3"), o), "<c>(c) -> (<b>(b) -> (<a>(a) -> (() -> ()) | (a & ~false & ~nil)... *TRUNCATED*");
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}
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else
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{
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o.maxTypeLength = 40;
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CHECK_EQ(toString(requireType("f0"), o), "() -> ()");
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CHECK_EQ(toString(requireType("f1"), o), "(() -> ()) -> () -> ()");
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CHECK_EQ(toString(requireType("f2"), o), "((() -> ()) -> () -> ()) -> (() -> ()) -> ... *TRUNCATED*");
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CHECK_EQ(toString(requireType("f3"), o), "(((() -> ()) -> () -> ()) -> (() -> ()) -> ... *TRUNCATED*");
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}
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}
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TEST_CASE_FIXTURE(Fixture, "stringifying_table_type_correctly_use_matching_table_state_braces")
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{
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TableType ttv{TableState::Sealed, TypeLevel{}};
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for (char c : std::string("abcdefghij"))
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ttv.props[std::string(1, c)] = {builtinTypes->numberType};
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Type tv{ttv};
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ToStringOptions o;
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o.maxTableLength = 40;
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CHECK_EQ(toString(&tv, o), "{| a: number, b: number, c: number, d: number, e: number, ... 5 more ... |}");
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}
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TEST_CASE_FIXTURE(Fixture, "stringifying_cyclic_union_type_bails_early")
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{
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Type tv{UnionType{{builtinTypes->stringType, builtinTypes->numberType}}};
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UnionType* utv = getMutable<UnionType>(&tv);
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utv->options.push_back(&tv);
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utv->options.push_back(&tv);
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CHECK_EQ("t1 where t1 = number | string", toString(&tv));
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}
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TEST_CASE_FIXTURE(Fixture, "stringifying_cyclic_intersection_type_bails_early")
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{
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Type tv{IntersectionType{}};
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IntersectionType* itv = getMutable<IntersectionType>(&tv);
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itv->parts.push_back(&tv);
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itv->parts.push_back(&tv);
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CHECK_EQ("t1 where t1 = t1 & t1", toString(&tv));
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}
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TEST_CASE_FIXTURE(Fixture, "stringifying_array_uses_array_syntax")
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{
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TableType ttv{TableState::Sealed, TypeLevel{}};
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ttv.indexer = TableIndexer{builtinTypes->numberType, builtinTypes->stringType};
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CHECK_EQ("{string}", toString(Type{ttv}));
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ttv.props["A"] = {builtinTypes->numberType};
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CHECK_EQ("{| [number]: string, A: number |}", toString(Type{ttv}));
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ttv.props.clear();
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ttv.state = TableState::Unsealed;
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CHECK_EQ("{string}", toString(Type{ttv}));
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}
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TEST_CASE_FIXTURE(Fixture, "generic_packs_are_stringified_differently_from_generic_types")
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{
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TypePackVar tpv{GenericTypePack{"a"}};
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CHECK_EQ(toString(&tpv), "a...");
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Type tv{GenericType{"a"}};
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CHECK_EQ(toString(&tv), "a");
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}
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TEST_CASE_FIXTURE(Fixture, "function_type_with_argument_names")
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{
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CheckResult result = check("type MyFunc = (a: number, string, c: number) -> string; local a : MyFunc");
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LUAU_REQUIRE_NO_ERRORS(result);
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ToStringOptions opts;
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opts.functionTypeArguments = true;
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CHECK_EQ("(a: number, string, c: number) -> string", toString(requireType("a"), opts));
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}
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TEST_CASE_FIXTURE(Fixture, "function_type_with_argument_names_generic")
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{
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CheckResult result = check("local function f<a...>(n: number, ...: a...): (a...) return ... end");
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LUAU_REQUIRE_NO_ERRORS(result);
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ToStringOptions opts;
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opts.functionTypeArguments = true;
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CHECK_EQ("<a...>(n: number, a...) -> (a...)", toString(requireType("f"), opts));
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}
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TEST_CASE_FIXTURE(Fixture, "function_type_with_argument_names_and_self")
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{
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CheckResult result = check(R"(
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local tbl = {}
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tbl.a = 2
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function tbl:foo(b: number, c: number) return (self.a :: number) + b + c end
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type Table = typeof(tbl)
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type Foo = typeof(tbl.foo)
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local u: Foo
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
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ToStringOptions opts;
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opts.functionTypeArguments = true;
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// Can't guess the name of 'self' to compare name, but at least there should be no assertion
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toString(requireType("u"), opts);
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}
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TEST_CASE_FIXTURE(Fixture, "generate_friendly_names_for_inferred_generics")
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{
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CheckResult result = check(R"(
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function id(x) return x end
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function id2(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20, a21, a22, a23, a24, a25, a26, a27, a28, a29, a30)
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return a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20, a21, a22, a23, a24, a25, a26, a27, a28, a29, a30
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end
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)");
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LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ("<a>(a) -> a", toString(requireType("id")));
|
|
|
|
CHECK_EQ("<a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, a1, b1, c1, d1>(a, b, c, d, e, f, g, h, i, j, k, l, "
|
|
"m, n, o, p, q, r, s, t, u, v, w, x, y, z, a1, b1, c1, d1) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, "
|
|
"x, y, z, a1, b1, c1, d1)",
|
|
toString(requireType("id2")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringDetailed")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function id3(a, b, c)
|
|
return a, b, c
|
|
end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
ToStringOptions opts;
|
|
|
|
TypeId id3Type = requireType("id3");
|
|
ToStringResult nameData = toStringDetailed(id3Type, opts);
|
|
|
|
REQUIRE(3 == opts.nameMap.types.size());
|
|
|
|
REQUIRE_EQ("<a, b, c>(a, b, c) -> (a, b, c)", nameData.name);
|
|
|
|
const FunctionType* ftv = get<FunctionType>(follow(id3Type));
|
|
REQUIRE(ftv != nullptr);
|
|
|
|
auto params = flatten(ftv->argTypes).first;
|
|
REQUIRE(3 == params.size());
|
|
|
|
CHECK("a" == toString(params[0], opts));
|
|
CHECK("b" == toString(params[1], opts));
|
|
CHECK("c" == toString(params[2], opts));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "toStringDetailed2")
|
|
{
|
|
ScopedFastFlag sff[] = {
|
|
{"DebugLuauSharedSelf", true},
|
|
};
|
|
|
|
CheckResult result = check(R"(
|
|
local base = {}
|
|
function base:one() return 1 end
|
|
|
|
local child = {}
|
|
setmetatable(child, {__index=base})
|
|
function child:two() return 2 end
|
|
|
|
local inst = {}
|
|
setmetatable(inst, {__index=child})
|
|
)");
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
ToStringOptions opts;
|
|
|
|
TypeId tType = requireType("inst");
|
|
ToStringResult r = toStringDetailed(tType, opts);
|
|
CHECK_EQ("{ @metatable { __index: { @metatable {| __index: base |}, child } }, inst }", r.name);
|
|
CHECK(0 == opts.nameMap.types.size());
|
|
|
|
const MetatableType* tMeta = get<MetatableType>(tType);
|
|
REQUIRE(tMeta);
|
|
|
|
TableType* tMeta2 = getMutable<TableType>(tMeta->metatable);
|
|
REQUIRE(tMeta2);
|
|
REQUIRE(tMeta2->props.count("__index"));
|
|
|
|
const MetatableType* tMeta3 = get<MetatableType>(tMeta2->props["__index"].type());
|
|
REQUIRE(tMeta3);
|
|
|
|
TableType* tMeta4 = getMutable<TableType>(tMeta3->metatable);
|
|
REQUIRE(tMeta4);
|
|
REQUIRE(tMeta4->props.count("__index"));
|
|
|
|
TableType* tMeta5 = getMutable<TableType>(tMeta4->props["__index"].type());
|
|
REQUIRE(tMeta5);
|
|
REQUIRE(tMeta5->props.count("one") > 0);
|
|
|
|
TableType* tMeta6 = getMutable<TableType>(tMeta3->table);
|
|
REQUIRE(tMeta6);
|
|
REQUIRE(tMeta6->props.count("two") > 0);
|
|
|
|
ToStringResult oneResult = toStringDetailed(tMeta5->props["one"].type(), opts);
|
|
|
|
std::string twoResult = toString(tMeta6->props["two"].type(), opts);
|
|
|
|
CHECK_EQ("<a>(a) -> number", oneResult.name);
|
|
CHECK_EQ("<b>(b) -> number", twoResult);
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringErrorPack")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function target(callback: nil) return callback(4, "hello") end
|
|
)");
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
|
CHECK_EQ("(nil) -> (*error-type*)", toString(requireType("target")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringGenericPack")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function foo(a, b) return a(b) end
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
CHECK_EQ(toString(requireType("foo")), "<a, b...>((a) -> (b...), a) -> (b...)");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toString_the_boundTo_table_type_contained_within_a_TypePack")
|
|
{
|
|
Type tv1{TableType{}};
|
|
TableType* ttv = getMutable<TableType>(&tv1);
|
|
ttv->state = TableState::Sealed;
|
|
ttv->props["hello"] = {builtinTypes->numberType};
|
|
ttv->props["world"] = {builtinTypes->numberType};
|
|
|
|
TypePackVar tpv1{TypePack{{&tv1}}};
|
|
|
|
Type tv2{TableType{}};
|
|
TableType* bttv = getMutable<TableType>(&tv2);
|
|
bttv->state = TableState::Free;
|
|
bttv->props["hello"] = {builtinTypes->numberType};
|
|
bttv->boundTo = &tv1;
|
|
|
|
TypePackVar tpv2{TypePack{{&tv2}}};
|
|
|
|
CHECK_EQ("{| hello: number, world: number |}", toString(&tpv1));
|
|
CHECK_EQ("{| hello: number, world: number |}", toString(&tpv2));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "no_parentheses_around_return_type_if_pack_has_an_empty_head_link")
|
|
{
|
|
TypeArena arena;
|
|
TypePackId realTail = arena.addTypePack({builtinTypes->stringType});
|
|
TypePackId emptyTail = arena.addTypePack({}, realTail);
|
|
|
|
TypePackId argList = arena.addTypePack({builtinTypes->stringType});
|
|
|
|
TypeId functionType = arena.addType(FunctionType{argList, emptyTail});
|
|
|
|
CHECK("(string) -> string" == toString(functionType));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "no_parentheses_around_cyclic_function_type_in_union")
|
|
{
|
|
CheckResult result = check(R"(
|
|
type F = ((() -> number)?) -> F?
|
|
local function f(p) return f end
|
|
local g: F = f
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ("t1 where t1 = ((() -> number)?) -> t1?", toString(requireType("g")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "no_parentheses_around_cyclic_function_type_in_intersection")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function f() return f end
|
|
local a: ((number) -> ()) & typeof(f)
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK_EQ("((number) -> ()) & t1 where t1 = () -> t1", toString(requireType("a")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "self_recursive_instantiated_param")
|
|
{
|
|
Type tableTy{TableType{}};
|
|
TableType* ttv = getMutable<TableType>(&tableTy);
|
|
ttv->name = "Table";
|
|
ttv->instantiatedTypeParams.push_back(&tableTy);
|
|
|
|
CHECK_EQ(toString(tableTy), "Table<Table>");
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_id")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function id(x) return x end
|
|
)");
|
|
|
|
TypeId ty = requireType("id");
|
|
const FunctionType* ftv = get<FunctionType>(follow(ty));
|
|
|
|
CHECK_EQ("id<a>(x: a): a", toStringNamedFunction("id", *ftv));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_map")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function map(arr, fn)
|
|
local t = {}
|
|
for i = 0, #arr do
|
|
t[i] = fn(arr[i])
|
|
end
|
|
return t
|
|
end
|
|
)");
|
|
|
|
TypeId ty = requireType("map");
|
|
const FunctionType* ftv = get<FunctionType>(follow(ty));
|
|
|
|
CHECK_EQ("map<a, b>(arr: {a}, fn: (a) -> b): {b}", toStringNamedFunction("map", *ftv));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_generic_pack")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function f(a: number, b: string) end
|
|
local function test<T..., U...>(...: T...): U...
|
|
f(...)
|
|
return 1, 2, 3
|
|
end
|
|
)");
|
|
|
|
TypeId ty = requireType("test");
|
|
const FunctionType* ftv = get<FunctionType>(follow(ty));
|
|
|
|
CHECK_EQ("test<T..., U...>(...: T...): U...", toStringNamedFunction("test", *ftv));
|
|
}
|
|
|
|
TEST_CASE("toStringNamedFunction_unit_f")
|
|
{
|
|
TypePackVar empty{TypePack{}};
|
|
FunctionType ftv{&empty, &empty, {}, false};
|
|
CHECK_EQ("f(): ()", toStringNamedFunction("f", ftv));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_variadics")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function f<a, b...>(x: a, ...): (a, a, b...)
|
|
return x, x, ...
|
|
end
|
|
)");
|
|
|
|
TypeId ty = requireType("f");
|
|
auto ftv = get<FunctionType>(follow(ty));
|
|
|
|
CHECK_EQ("f<a, b...>(x: a, ...: any): (a, a, b...)", toStringNamedFunction("f", *ftv));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_variadics2")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function f(): ...number
|
|
return 1, 2, 3
|
|
end
|
|
)");
|
|
|
|
TypeId ty = requireType("f");
|
|
auto ftv = get<FunctionType>(follow(ty));
|
|
|
|
CHECK_EQ("f(): ...number", toStringNamedFunction("f", *ftv));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_variadics3")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function f(): (string, ...number)
|
|
return 'a', 1, 2, 3
|
|
end
|
|
)");
|
|
|
|
TypeId ty = requireType("f");
|
|
auto ftv = get<FunctionType>(follow(ty));
|
|
|
|
CHECK_EQ("f(): (string, ...number)", toStringNamedFunction("f", *ftv));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_type_annotation_has_partial_argnames")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local f: (number, y: number) -> number
|
|
)");
|
|
|
|
TypeId ty = requireType("f");
|
|
auto ftv = get<FunctionType>(follow(ty));
|
|
|
|
CHECK_EQ("f(_: number, y: number): number", toStringNamedFunction("f", *ftv));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_hide_type_params")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function f<T>(x: T, g: <U>(T) -> U)): ()
|
|
end
|
|
)");
|
|
|
|
TypeId ty = requireType("f");
|
|
auto ftv = get<FunctionType>(follow(ty));
|
|
|
|
ToStringOptions opts;
|
|
opts.hideNamedFunctionTypeParameters = true;
|
|
CHECK_EQ("f(x: T, g: <U>(T) -> U): ()", toStringNamedFunction("f", *ftv, opts));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_overrides_param_names")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local function test(a, b : string, ... : number) return a end
|
|
)");
|
|
|
|
TypeId ty = requireType("test");
|
|
const FunctionType* ftv = get<FunctionType>(follow(ty));
|
|
|
|
ToStringOptions opts;
|
|
opts.namedFunctionOverrideArgNames = {"first", "second", "third"};
|
|
CHECK_EQ("test<a>(first: a, second: string, ...: number): a", toStringNamedFunction("test", *ftv, opts));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "pick_distinct_names_for_mixed_explicit_and_implicit_generics")
|
|
{
|
|
CheckResult result = check(R"(
|
|
function foo<a>(x: a, y) end
|
|
)");
|
|
|
|
CHECK("<a, b>(a, b) -> ()" == toString(requireType("foo")));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_include_self_param")
|
|
{
|
|
ScopedFastFlag sff[]{
|
|
{"DebugLuauSharedSelf", true},
|
|
};
|
|
|
|
CheckResult result = check(R"(
|
|
local foo = {}
|
|
function foo:method(arg: string): ()
|
|
end
|
|
)");
|
|
|
|
TypeId parentTy = requireType("foo");
|
|
auto ttv = get<TableType>(follow(parentTy));
|
|
auto ftv = get<FunctionType>(follow(ttv->props.at("method").type()));
|
|
|
|
CHECK_EQ("foo:method<a>(self: a, arg: string): ()", toStringNamedFunction("foo:method", *ftv));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_hide_self_param")
|
|
{
|
|
ScopedFastFlag sff[]{
|
|
{"DebugLuauSharedSelf", true},
|
|
};
|
|
|
|
CheckResult result = check(R"(
|
|
local foo = {}
|
|
function foo:method(arg: string): ()
|
|
end
|
|
)");
|
|
|
|
ToStringOptions opts;
|
|
opts.hideFunctionSelfArgument = true;
|
|
|
|
TypeId parentTy = requireType("foo");
|
|
auto ttv = get<TableType>(follow(parentTy));
|
|
REQUIRE_MESSAGE(ttv, "Expected a table but got " << toString(parentTy, opts));
|
|
TypeId methodTy = follow(ttv->props.at("method").type());
|
|
auto ftv = get<FunctionType>(methodTy);
|
|
REQUIRE_MESSAGE(ftv, "Expected a function but got " << toString(methodTy, opts));
|
|
|
|
CHECK_EQ("foo:method<a>(arg: string): ()", toStringNamedFunction("foo:method", *ftv, opts));
|
|
}
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "tostring_unsee_ttv_if_array")
|
|
{
|
|
CheckResult result = check(R"(
|
|
local x: {string}
|
|
-- This code is constructed very specifically to use the same (by pointer
|
|
-- identity) type in the function twice.
|
|
local y: (typeof(x), typeof(x)) -> ()
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
CHECK(toString(requireType("y")) == "({string}, {string}) -> ()");
|
|
}
|
|
|
|
TEST_SUITE_END();
|