Johnni Winther
fdc765faad
TEST=existing Change-Id: I0a8fdf09f742b55357411f12dc6164d4050bb83c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196283 Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
67 lines
2.9 KiB
Plaintext
67 lines
2.9 KiB
Plaintext
library /*isNonNullableByDefault*/;
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import self as self;
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import "dart:core" as core;
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import "dart:collection" as col;
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class C<X extends core::Object?, Y extends core::Object> extends core::Object {
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synthetic constructor •() → self::C<self::C::X%, self::C::Y>
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: super core::Object::•()
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;
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method test(generic-covariant-impl self::C::X% x, generic-covariant-impl self::C::Y? y) → dynamic {
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core::Set<core::Object?> v = block {
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final core::Set<core::Object?> #t1 = col::LinkedHashSet::•<core::Object?>();
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#t1.{core::Set::add}{Invariant}(x);
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#t1.{core::Set::add}{Invariant}(42);
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} =>#t1;
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core::Set<core::Object?> w = block {
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final core::Set<core::Object?> #t2 = col::LinkedHashSet::•<core::Object?>();
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#t2.{core::Set::add}{Invariant}(42);
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#t2.{core::Set::add}{Invariant}(x);
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} =>#t2;
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core::Set<core::Object?> p = block {
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final core::Set<core::Object?> #t3 = col::LinkedHashSet::•<core::Object?>();
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#t3.{core::Set::add}{Invariant}(y);
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#t3.{core::Set::add}{Invariant}(42);
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} =>#t3;
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core::Set<core::Object?> q = block {
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final core::Set<core::Object?> #t4 = col::LinkedHashSet::•<core::Object?>();
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#t4.{core::Set::add}{Invariant}(42);
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#t4.{core::Set::add}{Invariant}(y);
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} =>#t4;
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self::assertRightSubtype(v);
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self::assertLeftSubtype<core::Set<core::Object?>>(v);
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self::assertRightSubtype(w);
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self::assertLeftSubtype<core::Set<core::Object?>>(w);
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self::assertRightSubtype(p);
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self::assertLeftSubtype<core::Set<core::Object?>>(p);
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self::assertRightSubtype(q);
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self::assertLeftSubtype<core::Set<core::Object?>>(q);
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if(x is{ForNonNullableByDefault} core::Object?) {
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core::Set<core::Object?> v = block {
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final core::Set<core::Object?> #t5 = col::LinkedHashSet::•<core::Object?>();
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#t5.{core::Set::add}{Invariant}(x{self::C::X% & core::Object? /* '%' & '?' = '%' */});
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#t5.{core::Set::add}{Invariant}(42);
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} =>#t5;
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core::Set<core::Object?> w = block {
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final core::Set<core::Object?> #t6 = col::LinkedHashSet::•<core::Object?>();
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#t6.{core::Set::add}{Invariant}(42);
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#t6.{core::Set::add}{Invariant}(x{self::C::X% & core::Object? /* '%' & '?' = '%' */});
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} =>#t6;
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self::assertRightSubtype(v);
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self::assertLeftSubtype<core::Set<core::Object?>>(v);
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self::assertRightSubtype(w);
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self::assertLeftSubtype<core::Set<core::Object?>>(w);
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}
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}
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}
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static method assertRightSubtype(dynamic x) → dynamic {
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x as{ForNonNullableByDefault} core::Set<core::Object?>;
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}
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static method assertLeftSubtype<X extends core::Object? = dynamic>(self::assertLeftSubtype::X% x) → dynamic {
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col::LinkedHashSet::•<core::Object?>() as{ForNonNullableByDefault} self::assertLeftSubtype::X%;
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}
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static method main() → dynamic {
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new self::C::•<core::int?, core::int>().{self::C::test}(42, null);
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new self::C::•<core::int?, core::int>().{self::C::test}(null, null);
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}
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