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Use syntheticName for stringified MetatableTypeVar (#563)

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JohnnyMorganz 2022-07-05 17:19:54 +01:00 • committed by GitHub
parent 4d98a16ea8
commit baa35117bd
Signed by: DevComp
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 37 additions and 0 deletions
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6
Analysis/src/ToString.cpp
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@ -700,6 +700,12 @@ struct TypeVarStringifier
void operator()(TypeId, const MetatableTypeVar& mtv)
{
state.result.invalid = true;
if (!state.exhaustive && mtv.syntheticName)
{
state.emit(*mtv.syntheticName);
return;
}
state.emit("{ @metatable ");
stringify(mtv.metatable);
state.emit(",");

31
tests/ToString.test.cpp
View file

@ -96,6 +96,37 @@ TEST_CASE_FIXTURE(Fixture, "table_respects_use_line_break")
//clang-format on
}
TEST_CASE_FIXTURE(Fixture, "metatable")
{
TypeVar table{TypeVariant(TableTypeVar())};
TypeVar metatable{TypeVariant(TableTypeVar())};
TypeVar mtv{TypeVariant(MetatableTypeVar{&table, &metatable})};
CHECK_EQ("{ @metatable { }, { } }", toString(&mtv));
}
TEST_CASE_FIXTURE(Fixture, "named_metatable")
{
TypeVar table{TypeVariant(TableTypeVar())};
TypeVar metatable{TypeVariant(TableTypeVar())};
TypeVar mtv{TypeVariant(MetatableTypeVar{&table, &metatable, "NamedMetatable"})};
CHECK_EQ("NamedMetatable", toString(&mtv));
}
TEST_CASE_FIXTURE(BuiltinsFixture, "named_metatable_toStringNamedFunction")
{
CheckResult result = check(R"(
local function createTbl(): NamedMetatable
return setmetatable({}, {})
end
type NamedMetatable = typeof(createTbl())
)");
TypeId ty = requireType("createTbl");
const FunctionTypeVar* ftv = get<FunctionTypeVar>(follow(ty));
REQUIRE(ftv);
CHECK_EQ("createTbl(): NamedMetatable", toStringNamedFunction("createTbl", *ftv));
}
TEST_CASE_FIXTURE(BuiltinsFixture, "exhaustive_toString_of_cyclic_table")
{
CheckResult result = check(R"(