| // Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| class Class1 { |
| int field; |
| |
| Class1(this.field); |
| |
| String toString() => 'Class1($field)'; |
| } |
| |
| class Class2 { |
| int field; |
| |
| Class2(this.field); |
| |
| String toString() => 'Class2($field)'; |
| } |
| |
| extension on Class1 { |
| int method() { |
| print('Extension1.method on $this'); |
| return field; |
| } |
| num genericMethod<T extends num>(T t) { |
| print('Extension1.genericMethod<$T>($t) on $this'); |
| return field + t; |
| } |
| int get property { |
| print('Extension1.property get on $this'); |
| return field; |
| } |
| set property(int value) { |
| field = value; |
| print('Extension1.property set($value) on $this'); |
| value++; |
| } |
| } |
| |
| |
| extension on Class2 { |
| int method() { |
| print('Extension2.method on $this'); |
| return field + 3; |
| } |
| num genericMethod<T extends num>(T t) { |
| print('Extension2.genericMethod<$T>($t) on $this'); |
| return field + t + 4; |
| } |
| int get property { |
| print('Extension2.property get on $this'); |
| return field + 5; |
| } |
| set property(int value) { |
| print('Extension2.property set($value) on $this'); |
| value++; |
| field = value; |
| } |
| } |
| |
| main() { |
| Class1 c10 = new Class1(0); |
| Class1 c11 = new Class1(1); |
| testExtension1(c10, c11, c10, c11); |
| Class2 c20 = new Class2(0); |
| Class2 c21 = new Class2(1); |
| testExtension2(c20, c21, c20); |
| } |
| |
| testExtension1(Class1 c0, Class1 c1, Class1? c0n, Class1? c1n) { |
| expect(0, c0.method()); |
| expect(1, c1.method()); |
| expect(1, c1n?.method()); |
| expect(42, c0.genericMethod(42)); |
| expect(43, c0.genericMethod<num>(43)); |
| expect(88, c1.genericMethod(87)); |
| expect(89, c1.genericMethod<num>(88)); |
| expect(0, c0.property); |
| expect(0, c0n?.property); |
| expect(42, c0.property = 42); |
| expect(1, c1.property); |
| expect(87, c0.property = 87); |
| expect(27, c0.property = c1.property = 27); |
| expect(37, c1.property = c0.property = 37); |
| expect(77, c1.property = c0.property = c1.property = 77); |
| expect(67, c0.property = c1.property = c0.property = 67); |
| } |
| |
| testExtension2(Class2 c0, Class2 c1, Class2? c0n) { |
| expect(3, c0.method()); |
| expect(3, c0n?.method()); |
| expect(4, c1.method()); |
| expect(46, c0.genericMethod(42)); |
| expect(47, c0.genericMethod<num>(43)); |
| expect(92, c1.genericMethod(87)); |
| expect(93, c1.genericMethod<num>(88)); |
| expect(5, c0.property); |
| expect(5, c0n?.property); |
| expect(42, c0.property = 42); |
| expect(48, c0.property); |
| expect(6, c1.property); |
| expect(43, c1.property = 43); |
| expect(49, c1.property); |
| expect(49, c0.property = c1.property); |
| expect(55, c1.property = c0.property); |
| expect(61, c1.property = c0.property = c1.property); |
| expect(67, c0.property = c1.property = c0.property); |
| } |
| |
| expect(expected, actual) { |
| if (expected != actual) { |
| throw 'Mismatch: expected=$expected, actual=$actual'; |
| } |
| } |