| library test; |
| // |
| // Problems in library: |
| // |
| // pkg/front_end/testcases/runtime_checks_new/mixin_forwarding_stub_setter.dart:53:18: Error: The parameter 'value' of the method 'M.y' has type 'int', which does not match the corresponding type, 'Object', in the overridden method, 'I.y'. |
| // - 'Object' is from 'dart:core'. |
| // Change to a supertype of 'Object', or, for a covariant parameter, a subtype. |
| // void set y(int value) { |
| // ^ |
| // pkg/front_end/testcases/runtime_checks_new/mixin_forwarding_stub_setter.dart:43:12: Context: This is the overridden method ('y'). |
| // void set y(covariant Object value); |
| // ^ |
| // pkg/front_end/testcases/runtime_checks_new/mixin_forwarding_stub_setter.dart:58:7: Context: Override was introduced in the mixin application class 'C'. |
| // class C = B with M implements I<int>; |
| // ^ |
| // |
| import self as self; |
| import "dart:core" as core; |
| |
| class B extends core::Object { |
| synthetic constructor •() → self::B |
| : super core::Object::•() |
| ; |
| get x() → core::int { |
| throw "Should not be reached"; |
| } |
| set x(core::int value) → void { |
| throw "Should not be reached"; |
| } |
| get y() → core::int { |
| throw "Should not be reached"; |
| } |
| set y(core::int value) → void { |
| throw "Should not be reached"; |
| } |
| } |
| abstract class I<T extends core::Object = dynamic> extends core::Object { |
| synthetic constructor •() → self::I<self::I::T> |
| : super core::Object::•() |
| ; |
| abstract get x() → self::I::T; |
| abstract set x(generic-covariant-impl self::I::T value) → void; |
| abstract get y() → core::Object; |
| abstract set y(covariant core::Object value) → void; |
| } |
| class M extends core::Object { |
| synthetic constructor •() → self::M |
| : super core::Object::•() |
| ; |
| get x() → core::int |
| return 1; |
| set x(core::int value) → void { |
| self::expect(value, 2); |
| } |
| get y() → core::int |
| return 3; |
| set y(core::int value) → void { |
| self::expect(value, 4); |
| } |
| } |
| class C = self::B with self::M implements self::I<core::int> { |
| synthetic constructor •() → self::C |
| : super self::B::•() |
| ; |
| forwarding-stub set y(covariant core::Object value) → void |
| return super.{self::B::y} = value; |
| forwarding-stub set x(generic-covariant-impl core::int value) → void |
| return super.{self::B::x} = value; |
| } |
| static method expectTypeError(() → void callback) → void { |
| try { |
| callback.call(); |
| throw "Expected TypeError, did not occur"; |
| } |
| on core::TypeError catch(no-exception-var) { |
| } |
| } |
| static method expect(core::Object value, core::Object expected) → void { |
| if(!value.{core::Object::==}(expected)) { |
| throw "Expected ${expected}, got ${value}"; |
| } |
| } |
| static method test(self::I<core::Object> i) → void { |
| self::expectTypeError(() → core::Null { |
| i.{self::I::x} = "hello"; |
| }); |
| i.{self::I::x} = 2; |
| self::expect(i.{self::I::x}, 1); |
| self::expectTypeError(() → core::Null { |
| i.{self::I::y} = "hello"; |
| }); |
| i.{self::I::y} = 4; |
| self::expect(i.{self::I::y}, 3); |
| } |
| static method main() → void { |
| self::test(new self::C::•()); |
| } |