2021-10-29 21:25:12 +01:00
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// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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2021-11-05 02:34:35 +00:00
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#include "Luau/Scope.h"
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2021-10-29 21:25:12 +01:00
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#include "Luau/ToString.h"
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#include "Fixture.h"
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2023-01-04 20:53:17 +00:00
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#include "ScopedFlags.h"
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2021-10-29 21:25:12 +01:00
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#include "doctest.h"
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using namespace Luau;
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2022-04-15 00:57:43 +01:00
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LUAU_FASTFLAG(LuauRecursiveTypeParameterRestriction);
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2021-10-29 21:25:12 +01:00
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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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2023-01-04 20:53:17 +00:00
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Type cyclicTable{TypeVariant(TableType())};
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TableType* tableOne = getMutable<TableType>(&cyclicTable);
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2021-10-29 21:25:12 +01:00
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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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2021-10-29 21:25:12 +01:00
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t->name = "TheTable";
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CHECK_EQ("TheTable", toString(&table));
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}
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2022-06-14 16:39:25 +01:00
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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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2023-01-04 20:53:17 +00:00
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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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2022-07-05 17:19:54 +01:00
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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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2022-05-13 20:36:37 +01:00
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TEST_CASE_FIXTURE(BuiltinsFixture, "exhaustive_toString_of_cyclic_table")
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2021-10-29 21:25:12 +01:00
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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{{typeChecker.numberType, typeChecker.stringType}}};
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auto itv = Type{IntersectionType{{&utv, typeChecker.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{{typeChecker.numberType, typeChecker.stringType}}};
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auto utv = Type{UnionType{{&itv, typeChecker.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{{typeChecker.stringType, typeChecker.numberType}}};
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auto numberAndStringPack = TypePackVar{TypePack{{typeChecker.numberType, typeChecker.stringType}}};
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2023-01-04 20:53:17 +00:00
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auto sn2ns = Type{FunctionType{&stringAndNumberPack, &numberAndStringPack}};
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auto ns2sn = Type{FunctionType(typeChecker.globalScope->level, &numberAndStringPack, &stringAndNumberPack)};
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2023-01-04 20:53:17 +00:00
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auto utv = Type{UnionType{{&ns2sn, &sn2ns}}};
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auto itv = Type{IntersectionType{{&ns2sn, &sn2ns}}};
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2021-10-29 21:25:12 +01:00
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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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2022-05-17 19:22:54 +01:00
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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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2021-10-29 21:25:12 +01:00
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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)] = {typeChecker.numberType};
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2023-01-04 20:53:17 +00:00
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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)] = {typeChecker.numberType};
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2023-01-04 20:53:17 +00:00
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Type tv{ttv};
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2021-10-29 21:25:12 +01:00
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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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2022-11-10 22:53:13 +00:00
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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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Sync to upstream/release/562 (#828)
* Fixed rare use-after-free in analysis during table unification
A lot of work these past months went into two new Luau components:
* A near full rewrite of the typechecker using a new deferred constraint
resolution system
* Native code generation for AoT/JiT compilation of VM bytecode into x64
(avx)/arm64 instructions
Both of these components are far from finished and we don't provide
documentation on building and using them at this point.
However, curious community members expressed interest in learning about
changes that go into these components each week, so we are now listing
them here in the 'sync' pull request descriptions.
---
New typechecker can be enabled by setting
DebugLuauDeferredConstraintResolution flag to 'true'.
It is considered unstable right now, so try it at your own risk.
Even though it already provides better type inference than the current
one in some cases, our main goal right now is to reach feature parity
with current typechecker.
Features which improve over the capabilities of the current typechecker
are marked as '(NEW)'.
Changes to new typechecker:
* Regular for loop index and parameters are now typechecked
* Invalid type annotations on local variables are ignored to improve
autocomplete
* Fixed missing autocomplete type suggestions for function arguments
* Type reduction is now performed to produce simpler types to be
presented to the user (error messages, custom LSPs)
* Internally, complex types like '((number | string) & ~(false?)) |
string' can be produced, which is just 'string | number' when simplified
* Fixed spots where support for unknown and never types was missing
* (NEW) Length operator '#' is now valid to use on top table type, this
type comes up when doing typeof(x) == "table" guards and isn't available
in current typechecker
---
Changes to native code generation:
* Additional math library fast calls are now lowered to x64: math.ldexp,
math.round, math.frexp, math.modf, math.sign and math.clamp
2023-02-03 19:26:13 +00:00
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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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2022-11-10 22:53:13 +00:00
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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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}
|
2021-10-29 21:25:12 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "stringifying_type_is_still_capped_when_exhaustive")
|
|
|
|
{
|
|
|
|
CheckResult result = check(R"(
|
|
|
|
function f0() end
|
|
|
|
function f1(f) return f or f0 end
|
|
|
|
function f2(f) return f or f1 end
|
|
|
|
function f3(f) return f or f2 end
|
|
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
|
|
|
|
ToStringOptions o;
|
|
|
|
o.exhaustive = true;
|
2022-11-10 22:53:13 +00:00
|
|
|
if (FFlag::DebugLuauDeferredConstraintResolution)
|
|
|
|
{
|
|
|
|
o.maxTypeLength = 30;
|
|
|
|
CHECK_EQ(toString(requireType("f0"), o), "() -> ()");
|
Sync to upstream/release/562 (#828)
* Fixed rare use-after-free in analysis during table unification
A lot of work these past months went into two new Luau components:
* A near full rewrite of the typechecker using a new deferred constraint
resolution system
* Native code generation for AoT/JiT compilation of VM bytecode into x64
(avx)/arm64 instructions
Both of these components are far from finished and we don't provide
documentation on building and using them at this point.
However, curious community members expressed interest in learning about
changes that go into these components each week, so we are now listing
them here in the 'sync' pull request descriptions.
---
New typechecker can be enabled by setting
DebugLuauDeferredConstraintResolution flag to 'true'.
It is considered unstable right now, so try it at your own risk.
Even though it already provides better type inference than the current
one in some cases, our main goal right now is to reach feature parity
with current typechecker.
Features which improve over the capabilities of the current typechecker
are marked as '(NEW)'.
Changes to new typechecker:
* Regular for loop index and parameters are now typechecked
* Invalid type annotations on local variables are ignored to improve
autocomplete
* Fixed missing autocomplete type suggestions for function arguments
* Type reduction is now performed to produce simpler types to be
presented to the user (error messages, custom LSPs)
* Internally, complex types like '((number | string) & ~(false?)) |
string' can be produced, which is just 'string | number' when simplified
* Fixed spots where support for unknown and never types was missing
* (NEW) Length operator '#' is now valid to use on top table type, this
type comes up when doing typeof(x) == "table" guards and isn't available
in current typechecker
---
Changes to native code generation:
* Additional math library fast calls are now lowered to x64: math.ldexp,
math.round, math.frexp, math.modf, math.sign and math.clamp
2023-02-03 19:26:13 +00:00
|
|
|
CHECK_EQ(toString(requireType("f1"), o), "<a>(a) -> (() -> ()) | (a & ~false & ~nil)... *TRUNCATED*");
|
|
|
|
CHECK_EQ(toString(requireType("f2"), o), "<b>(b) -> (<a>(a) -> (() -> ()) | (a & ~false & ~nil)... *TRUNCATED*");
|
|
|
|
CHECK_EQ(toString(requireType("f3"), o), "<c>(c) -> (<b>(b) -> (<a>(a) -> (() -> ()) | (a & ~false & ~nil)... *TRUNCATED*");
|
2022-11-10 22:53:13 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
o.maxTypeLength = 40;
|
|
|
|
CHECK_EQ(toString(requireType("f0"), o), "() -> ()");
|
|
|
|
CHECK_EQ(toString(requireType("f1"), o), "(() -> ()) -> () -> ()");
|
|
|
|
CHECK_EQ(toString(requireType("f2"), o), "((() -> ()) -> () -> ()) -> (() -> ()) -> ... *TRUNCATED*");
|
|
|
|
CHECK_EQ(toString(requireType("f3"), o), "(((() -> ()) -> () -> ()) -> (() -> ()) -> ... *TRUNCATED*");
|
|
|
|
}
|
2021-10-29 21:25:12 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "stringifying_table_type_correctly_use_matching_table_state_braces")
|
|
|
|
{
|
2023-01-04 20:53:17 +00:00
|
|
|
TableType ttv{TableState::Sealed, TypeLevel{}};
|
2021-10-29 21:25:12 +01:00
|
|
|
for (char c : std::string("abcdefghij"))
|
|
|
|
ttv.props[std::string(1, c)] = {typeChecker.numberType};
|
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
Type tv{ttv};
|
2021-10-29 21:25:12 +01:00
|
|
|
|
2021-11-19 16:10:07 +00:00
|
|
|
ToStringOptions o;
|
|
|
|
o.maxTableLength = 40;
|
2021-10-29 21:25:12 +01:00
|
|
|
CHECK_EQ(toString(&tv, o), "{| a: number, b: number, c: number, d: number, e: number, ... 5 more ... |}");
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "stringifying_cyclic_union_type_bails_early")
|
|
|
|
{
|
2023-01-04 20:53:17 +00:00
|
|
|
Type tv{UnionType{{typeChecker.stringType, typeChecker.numberType}}};
|
|
|
|
UnionType* utv = getMutable<UnionType>(&tv);
|
2021-10-29 21:25:12 +01:00
|
|
|
utv->options.push_back(&tv);
|
|
|
|
utv->options.push_back(&tv);
|
|
|
|
|
|
|
|
CHECK_EQ("t1 where t1 = number | string", toString(&tv));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "stringifying_cyclic_intersection_type_bails_early")
|
|
|
|
{
|
2023-01-04 20:53:17 +00:00
|
|
|
Type tv{IntersectionType{}};
|
|
|
|
IntersectionType* itv = getMutable<IntersectionType>(&tv);
|
2021-10-29 21:25:12 +01:00
|
|
|
itv->parts.push_back(&tv);
|
|
|
|
itv->parts.push_back(&tv);
|
|
|
|
|
|
|
|
CHECK_EQ("t1 where t1 = t1 & t1", toString(&tv));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "stringifying_array_uses_array_syntax")
|
|
|
|
{
|
2023-01-04 20:53:17 +00:00
|
|
|
TableType ttv{TableState::Sealed, TypeLevel{}};
|
2021-10-29 21:25:12 +01:00
|
|
|
ttv.indexer = TableIndexer{typeChecker.numberType, typeChecker.stringType};
|
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
CHECK_EQ("{string}", toString(Type{ttv}));
|
2021-10-29 21:25:12 +01:00
|
|
|
|
|
|
|
ttv.props["A"] = {typeChecker.numberType};
|
2023-01-04 20:53:17 +00:00
|
|
|
CHECK_EQ("{| [number]: string, A: number |}", toString(Type{ttv}));
|
2021-10-29 21:25:12 +01:00
|
|
|
|
|
|
|
ttv.props.clear();
|
|
|
|
ttv.state = TableState::Unsealed;
|
2023-01-04 20:53:17 +00:00
|
|
|
CHECK_EQ("{string}", toString(Type{ttv}));
|
2021-10-29 21:25:12 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "generic_packs_are_stringified_differently_from_generic_types")
|
|
|
|
{
|
|
|
|
TypePackVar tpv{GenericTypePack{"a"}};
|
|
|
|
CHECK_EQ(toString(&tpv), "a...");
|
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
Type tv{GenericType{"a"}};
|
2021-10-29 21:25:12 +01:00
|
|
|
CHECK_EQ(toString(&tv), "a");
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "function_type_with_argument_names")
|
|
|
|
{
|
|
|
|
CheckResult result = check("type MyFunc = (a: number, string, c: number) -> string; local a : MyFunc");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
|
|
|
|
ToStringOptions opts;
|
|
|
|
opts.functionTypeArguments = true;
|
|
|
|
CHECK_EQ("(a: number, string, c: number) -> string", toString(requireType("a"), opts));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "function_type_with_argument_names_generic")
|
|
|
|
{
|
|
|
|
CheckResult result = check("local function f<a...>(n: number, ...: a...): (a...) return ... end");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
|
|
|
|
ToStringOptions opts;
|
|
|
|
opts.functionTypeArguments = true;
|
|
|
|
CHECK_EQ("<a...>(n: number, a...) -> (a...)", toString(requireType("f"), opts));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "function_type_with_argument_names_and_self")
|
|
|
|
{
|
|
|
|
CheckResult result = check(R"(
|
|
|
|
local tbl = {}
|
|
|
|
tbl.a = 2
|
|
|
|
function tbl:foo(b: number, c: number) return (self.a :: number) + b + c end
|
|
|
|
type Table = typeof(tbl)
|
|
|
|
type Foo = typeof(tbl.foo)
|
|
|
|
local u: Foo
|
|
|
|
)");
|
|
|
|
LUAU_REQUIRE_NO_ERRORS(result);
|
|
|
|
|
|
|
|
ToStringOptions opts;
|
|
|
|
opts.functionTypeArguments = true;
|
|
|
|
// Can't guess the name of 'self' to compare name, but at least there should be no assertion
|
|
|
|
toString(requireType("u"), opts);
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "generate_friendly_names_for_inferred_generics")
|
|
|
|
{
|
|
|
|
CheckResult result = check(R"(
|
|
|
|
function id(x) return x end
|
|
|
|
|
|
|
|
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)
|
|
|
|
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
|
|
|
|
end
|
|
|
|
)");
|
|
|
|
|
|
|
|
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);
|
|
|
|
|
2022-08-25 22:53:50 +01:00
|
|
|
ToStringOptions opts;
|
|
|
|
|
2021-10-29 21:25:12 +01:00
|
|
|
TypeId id3Type = requireType("id3");
|
2022-08-25 22:53:50 +01:00
|
|
|
ToStringResult nameData = toStringDetailed(id3Type, opts);
|
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
REQUIRE(3 == opts.nameMap.types.size());
|
2021-10-29 21:25:12 +01:00
|
|
|
|
|
|
|
REQUIRE_EQ("<a, b, c>(a, b, c) -> (a, b, c)", nameData.name);
|
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
const FunctionType* ftv = get<FunctionType>(follow(id3Type));
|
2021-10-29 21:25:12 +01:00
|
|
|
REQUIRE(ftv != nullptr);
|
|
|
|
|
|
|
|
auto params = flatten(ftv->argTypes).first;
|
2022-08-25 22:53:50 +01:00
|
|
|
REQUIRE(3 == params.size());
|
2021-10-29 21:25:12 +01:00
|
|
|
|
2022-11-10 22:53:13 +00:00
|
|
|
CHECK("a" == toString(params[0], opts));
|
|
|
|
CHECK("b" == toString(params[1], opts));
|
|
|
|
CHECK("c" == toString(params[2], opts));
|
2021-10-29 21:25:12 +01:00
|
|
|
}
|
|
|
|
|
2022-05-13 20:36:37 +01:00
|
|
|
TEST_CASE_FIXTURE(BuiltinsFixture, "toStringDetailed2")
|
2021-10-29 21:25:12 +01:00
|
|
|
{
|
2022-08-25 22:53:50 +01:00
|
|
|
ScopedFastFlag sff[] = {
|
|
|
|
{"DebugLuauSharedSelf", true},
|
|
|
|
};
|
2022-07-01 00:52:43 +01:00
|
|
|
|
2021-10-29 21:25:12 +01:00
|
|
|
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);
|
|
|
|
|
2022-08-25 22:53:50 +01:00
|
|
|
ToStringOptions opts;
|
|
|
|
|
2021-10-29 21:25:12 +01:00
|
|
|
TypeId tType = requireType("inst");
|
2022-08-25 22:53:50 +01:00
|
|
|
ToStringResult r = toStringDetailed(tType, opts);
|
2022-07-01 00:52:43 +01:00
|
|
|
CHECK_EQ("{ @metatable { __index: { @metatable {| __index: base |}, child } }, inst }", r.name);
|
2023-01-04 20:53:17 +00:00
|
|
|
CHECK(0 == opts.nameMap.types.size());
|
2021-10-29 21:25:12 +01:00
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
const MetatableType* tMeta = get<MetatableType>(tType);
|
2021-10-29 21:25:12 +01:00
|
|
|
REQUIRE(tMeta);
|
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
TableType* tMeta2 = getMutable<TableType>(tMeta->metatable);
|
2021-10-29 21:25:12 +01:00
|
|
|
REQUIRE(tMeta2);
|
|
|
|
REQUIRE(tMeta2->props.count("__index"));
|
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
const MetatableType* tMeta3 = get<MetatableType>(tMeta2->props["__index"].type);
|
2021-10-29 21:25:12 +01:00
|
|
|
REQUIRE(tMeta3);
|
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
TableType* tMeta4 = getMutable<TableType>(tMeta3->metatable);
|
2021-10-29 21:25:12 +01:00
|
|
|
REQUIRE(tMeta4);
|
|
|
|
REQUIRE(tMeta4->props.count("__index"));
|
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
TableType* tMeta5 = getMutable<TableType>(tMeta4->props["__index"].type);
|
2021-10-29 21:25:12 +01:00
|
|
|
REQUIRE(tMeta5);
|
2022-10-28 11:37:29 +01:00
|
|
|
REQUIRE(tMeta5->props.count("one") > 0);
|
2021-10-29 21:25:12 +01:00
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
TableType* tMeta6 = getMutable<TableType>(tMeta3->table);
|
2021-10-29 21:25:12 +01:00
|
|
|
REQUIRE(tMeta6);
|
2022-10-28 11:37:29 +01:00
|
|
|
REQUIRE(tMeta6->props.count("two") > 0);
|
2021-10-29 21:25:12 +01:00
|
|
|
|
|
|
|
ToStringResult oneResult = toStringDetailed(tMeta5->props["one"].type, opts);
|
|
|
|
|
|
|
|
std::string twoResult = toString(tMeta6->props["two"].type, opts);
|
|
|
|
|
2022-07-01 00:52:43 +01:00
|
|
|
CHECK_EQ("<a>(a) -> number", oneResult.name);
|
|
|
|
CHECK_EQ("<b>(b) -> number", twoResult);
|
2021-10-29 21:25:12 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringErrorPack")
|
|
|
|
{
|
|
|
|
CheckResult result = check(R"(
|
|
|
|
local function target(callback: nil) return callback(4, "hello") end
|
|
|
|
)");
|
|
|
|
|
|
|
|
LUAU_REQUIRE_ERRORS(result);
|
2022-11-04 17:33:22 +00:00
|
|
|
CHECK_EQ("(nil) -> (*error-type*)", toString(requireType("target")));
|
2021-10-29 21:25:12 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
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")
|
|
|
|
{
|
2023-01-04 20:53:17 +00:00
|
|
|
Type tv1{TableType{}};
|
|
|
|
TableType* ttv = getMutable<TableType>(&tv1);
|
2021-10-29 21:25:12 +01:00
|
|
|
ttv->state = TableState::Sealed;
|
|
|
|
ttv->props["hello"] = {typeChecker.numberType};
|
|
|
|
ttv->props["world"] = {typeChecker.numberType};
|
|
|
|
|
|
|
|
TypePackVar tpv1{TypePack{{&tv1}}};
|
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
Type tv2{TableType{}};
|
|
|
|
TableType* bttv = getMutable<TableType>(&tv2);
|
2021-10-29 21:25:12 +01:00
|
|
|
bttv->state = TableState::Free;
|
|
|
|
bttv->props["hello"] = {typeChecker.numberType};
|
|
|
|
bttv->boundTo = &tv1;
|
|
|
|
|
|
|
|
TypePackVar tpv2{TypePack{{&tv2}}};
|
|
|
|
|
|
|
|
CHECK_EQ("{| hello: number, world: number |}", toString(&tpv1));
|
|
|
|
CHECK_EQ("{| hello: number, world: number |}", toString(&tpv2));
|
|
|
|
}
|
|
|
|
|
2022-10-14 20:48:41 +01:00
|
|
|
TEST_CASE_FIXTURE(Fixture, "no_parentheses_around_return_type_if_pack_has_an_empty_head_link")
|
|
|
|
{
|
|
|
|
TypeArena arena;
|
2023-01-04 20:53:17 +00:00
|
|
|
TypePackId realTail = arena.addTypePack({builtinTypes->stringType});
|
2022-10-14 20:48:41 +01:00
|
|
|
TypePackId emptyTail = arena.addTypePack({}, realTail);
|
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
TypePackId argList = arena.addTypePack({builtinTypes->stringType});
|
2022-10-14 20:48:41 +01:00
|
|
|
|
2023-01-04 20:53:17 +00:00
|
|
|
TypeId functionType = arena.addType(FunctionType{argList, emptyTail});
|
2022-10-14 20:48:41 +01:00
|
|
|
|
2022-12-02 18:09:59 +00:00
|
|
|
CHECK("(string) -> string" == toString(functionType));
|
2022-10-14 20:48:41 +01:00
|
|
|
}
|
|
|
|
|
2021-10-29 21:25:12 +01:00
|
|
|
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")
|
|
|
|
{
|
2023-01-04 20:53:17 +00:00
|
|
|
Type tableTy{TableType{}};
|
|
|
|
TableType* ttv = getMutable<TableType>(&tableTy);
|
2021-10-29 21:25:12 +01:00
|
|
|
ttv->name = "Table";
|
|
|
|
ttv->instantiatedTypeParams.push_back(&tableTy);
|
|
|
|
|
|
|
|
CHECK_EQ(toString(tableTy), "Table<Table>");
|
|
|
|
}
|
|
|
|
|
2021-11-19 16:10:07 +00:00
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_id")
|
|
|
|
{
|
|
|
|
CheckResult result = check(R"(
|
|
|
|
local function id(x) return x end
|
|
|
|
)");
|
|
|
|
|
|
|
|
TypeId ty = requireType("id");
|
2023-01-04 20:53:17 +00:00
|
|
|
const FunctionType* ftv = get<FunctionType>(follow(ty));
|
2021-11-19 16:10:07 +00:00
|
|
|
|
|
|
|
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");
|
2023-01-04 20:53:17 +00:00
|
|
|
const FunctionType* ftv = get<FunctionType>(follow(ty));
|
2021-11-19 16:10:07 +00:00
|
|
|
|
|
|
|
CHECK_EQ("map<a, b>(arr: {a}, fn: (a) -> b): {b}", toStringNamedFunction("map", *ftv));
|
|
|
|
}
|
|
|
|
|
2022-01-14 16:20:09 +00:00
|
|
|
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");
|
2023-01-04 20:53:17 +00:00
|
|
|
const FunctionType* ftv = get<FunctionType>(follow(ty));
|
2022-01-14 16:20:09 +00:00
|
|
|
|
|
|
|
CHECK_EQ("test<T..., U...>(...: T...): U...", toStringNamedFunction("test", *ftv));
|
|
|
|
}
|
|
|
|
|
2021-11-19 16:10:07 +00:00
|
|
|
TEST_CASE("toStringNamedFunction_unit_f")
|
|
|
|
{
|
|
|
|
TypePackVar empty{TypePack{}};
|
2023-01-04 20:53:17 +00:00
|
|
|
FunctionType ftv{&empty, &empty, {}, false};
|
2021-11-19 16:10:07 +00:00
|
|
|
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");
|
2023-01-04 20:53:17 +00:00
|
|
|
auto ftv = get<FunctionType>(follow(ty));
|
2021-11-19 16:10:07 +00:00
|
|
|
|
|
|
|
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");
|
2023-01-04 20:53:17 +00:00
|
|
|
auto ftv = get<FunctionType>(follow(ty));
|
2021-11-19 16:10:07 +00:00
|
|
|
|
|
|
|
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");
|
2023-01-04 20:53:17 +00:00
|
|
|
auto ftv = get<FunctionType>(follow(ty));
|
2021-11-19 16:10:07 +00:00
|
|
|
|
|
|
|
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");
|
2023-01-04 20:53:17 +00:00
|
|
|
auto ftv = get<FunctionType>(follow(ty));
|
2021-11-19 16:10:07 +00:00
|
|
|
|
|
|
|
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");
|
2023-01-04 20:53:17 +00:00
|
|
|
auto ftv = get<FunctionType>(follow(ty));
|
2021-11-19 16:10:07 +00:00
|
|
|
|
|
|
|
ToStringOptions opts;
|
|
|
|
opts.hideNamedFunctionTypeParameters = true;
|
|
|
|
CHECK_EQ("f(x: T, g: <U>(T) -> U): ()", toStringNamedFunction("f", *ftv, opts));
|
|
|
|
}
|
|
|
|
|
2022-03-24 22:04:14 +00:00
|
|
|
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");
|
2023-01-04 20:53:17 +00:00
|
|
|
const FunctionType* ftv = get<FunctionType>(follow(ty));
|
2022-03-24 22:04:14 +00:00
|
|
|
|
|
|
|
ToStringOptions opts;
|
|
|
|
opts.namedFunctionOverrideArgNames = {"first", "second", "third"};
|
|
|
|
CHECK_EQ("test<a>(first: a, second: string, ...: number): a", toStringNamedFunction("test", *ftv, opts));
|
|
|
|
}
|
|
|
|
|
2022-05-20 01:02:24 +01:00
|
|
|
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")));
|
|
|
|
}
|
|
|
|
|
2022-05-16 17:50:15 +01:00
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_include_self_param")
|
|
|
|
{
|
2022-07-01 00:52:43 +01:00
|
|
|
ScopedFastFlag sff[]{
|
|
|
|
{"DebugLuauSharedSelf", true},
|
|
|
|
};
|
|
|
|
|
2022-05-16 17:50:15 +01:00
|
|
|
CheckResult result = check(R"(
|
|
|
|
local foo = {}
|
|
|
|
function foo:method(arg: string): ()
|
|
|
|
end
|
|
|
|
)");
|
|
|
|
|
|
|
|
TypeId parentTy = requireType("foo");
|
2023-01-04 20:53:17 +00:00
|
|
|
auto ttv = get<TableType>(follow(parentTy));
|
2023-02-24 21:49:38 +00:00
|
|
|
auto ftv = get<FunctionType>(follow(ttv->props.at("method").type));
|
2022-05-16 17:50:15 +01:00
|
|
|
|
|
|
|
CHECK_EQ("foo:method<a>(self: a, arg: string): ()", toStringNamedFunction("foo:method", *ftv));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_hide_self_param")
|
|
|
|
{
|
2022-07-01 00:52:43 +01:00
|
|
|
ScopedFastFlag sff[]{
|
|
|
|
{"DebugLuauSharedSelf", true},
|
|
|
|
};
|
|
|
|
|
2022-05-16 17:50:15 +01:00
|
|
|
CheckResult result = check(R"(
|
|
|
|
local foo = {}
|
|
|
|
function foo:method(arg: string): ()
|
|
|
|
end
|
|
|
|
)");
|
|
|
|
|
2023-02-24 21:49:38 +00:00
|
|
|
ToStringOptions opts;
|
|
|
|
opts.hideFunctionSelfArgument = true;
|
|
|
|
|
2022-05-16 17:50:15 +01:00
|
|
|
TypeId parentTy = requireType("foo");
|
2023-01-04 20:53:17 +00:00
|
|
|
auto ttv = get<TableType>(follow(parentTy));
|
2023-02-24 21:49:38 +00:00
|
|
|
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));
|
2022-05-16 17:50:15 +01:00
|
|
|
|
|
|
|
CHECK_EQ("foo:method<a>(arg: string): ()", toStringNamedFunction("foo:method", *ftv, opts));
|
|
|
|
}
|
|
|
|
|
2022-09-29 23:23:10 +01:00
|
|
|
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}) -> ()");
|
|
|
|
}
|
|
|
|
|
2021-10-29 21:25:12 +01:00
|
|
|
TEST_SUITE_END();
|