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2432ac4647
New scheme for checking function subtyping: 1) Generate an $isX predicate on objects that are statically known subtypes of a given function type 2) Generate a signature encoding the whole function type on objects when a runtime check is needed. A check succeeds if either 1) or 2) is true. If too many predicates are needed a signature is generated instead, and if a signature is needed, no predicates are generated. Maximum number of predicates is currently determined by the magic constant MAX_FUNCTION_TYPE_PREDICATES in emitter.dart. R=karlklose@google.com Committed: https://code.google.com/p/dart/source/detail?r=24286 Review URL: https://codereview.chromium.org//12334070 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@24309 260f80e4-7a28-3924-810f-c04153c831b5
61 lines
2.4 KiB
Dart
61 lines
2.4 KiB
Dart
// Copyright (c) 2013, 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 constructors and initializers.
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// Check function subtyping for classes with call functions.
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import 'package:expect/expect.dart';
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typedef void Foo(bool a, [String b]);
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typedef void Bar(bool a, [String b]);
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typedef void Baz(bool a, {String b});
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typedef void Boz(bool a);
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class C1<T> {
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void call(T a, [String b]) {}
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}
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class D1<S, T> extends C1<T> {}
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class C2<T> {
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void call(T a, {String b}) {}
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}
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class D2<S, T> extends C2<T> {}
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main() {
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Expect.isTrue(new D1<String, bool>() is Foo, 'new D1<String, bool>() is Foo');
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Expect.isTrue(new D1<String, bool>() is Bar, 'new D1<String, bool>() is Bar');
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Expect.isFalse(new D1<String, bool>() is Baz,
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'new D1<String, bool>() is Baz');
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Expect.isTrue(new D1<String, bool>() is Boz, 'new D1<String, bool>() is Boz');
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Expect.isFalse(new D1<bool, int>() is Foo, 'new D1<bool, int>() is Foo');
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Expect.isFalse(new D1<bool, int>() is Bar, 'new D1<bool, int>() is Bar');
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Expect.isFalse(new D1<bool, int>() is Baz, 'new D1<bool, int>() is Baz');
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Expect.isFalse(new D1<bool, int>() is Boz, 'new D1<bool, int>() is Boz');
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Expect.isTrue(new D1() is Foo, 'new D1() is Foo');
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Expect.isTrue(new D1() is Bar, 'new D1() is Bar');
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Expect.isFalse(new D1() is Baz, 'new D1() is Baz');
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Expect.isTrue(new D1() is Boz, 'new D1() is Boz');
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Expect.isFalse(new D2<String, bool>() is Foo,
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'new D2<String, bool>() is Foo');
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Expect.isFalse(new D2<String, bool>() is Bar,
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'new D2<String, bool>() is Bar');
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Expect.isTrue(new D2<String, bool>() is Baz, 'new D2<String, bool>() is Baz');
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Expect.isTrue(new D2<String, bool>() is Boz, 'new D2<String, bool>() is Boz');
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Expect.isFalse(new D2<bool, int>() is Foo, 'new D2<bool, int>() is Foo');
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Expect.isFalse(new D2<bool, int>() is Bar, 'new D2<bool, int>() is Bar');
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Expect.isFalse(new D2<bool, int>() is Baz, 'new D2<bool, int>() is Baz');
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Expect.isFalse(new D2<bool, int>() is Boz, 'new D2<bool, int>() is Boz');
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Expect.isFalse(new D2() is Foo, 'new D2() is Foo');
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Expect.isFalse(new D2() is Bar, 'new D2() is Bar');
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Expect.isTrue(new D2() is Baz, 'new D2() is Baz');
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Expect.isTrue(new D2() is Boz, 'new D2() is Boz');
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}
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