hausner@google.com
35d7793891
This is the second try to my previous attempt to implement the new abstract class handling. Instead of a compile-time error, the VM now throws an AbstractClassInstantiationError at runtime if an abstract class is instantiated. Added the new error class to the core library. For now I'm still using the rule that a class is abstract if it is explicitly marked as abstract, or if it defines a new abstract method. Review URL: https://chromiumcodereview.appspot.com//10916039 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@11708 260f80e4-7a28-3924-810f-c04153c831b5
42 lines
856 B
Dart
42 lines
856 B
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Dart test program for testing Interfaces.
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interface Ai {
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int foo();
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}
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interface Bi extends Ai default InterfaceTest {
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Bi();
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}
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interface Simple extends Ai { }
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interface Aai { }
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interface Abi { }
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interface Bar { }
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interface Foo extends Bar { }
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interface Baz extends Bar, Foo { }
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class InterfaceTest implements Ai, Aai, Abi, Baz, Bi {
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var f;
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InterfaceTest() {}
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int foo() { return 1; }
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// intentionally unimplemented methods
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abstract beta();
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abstract String beta1();
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abstract String beta2(double d);
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}
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main() {
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// instantiate an abstract class
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var o = new Bi(); /// 00: static type warning, runtime error
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}
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