Ryan Macnak
00b2e580a3
Bug: https://github.com/dart-lang/sdk/issues/40045 Change-Id: I597259b38684de87016f1e136723d24f4ac05420 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/132440 Reviewed-by: Ben Konyi <bkonyi@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
40 lines
1.3 KiB
Dart
40 lines
1.3 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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import "dart:mirrors";
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import "package:expect/expect.dart";
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class MultiArityFunction implements Function {
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noSuchMethod(Invocation msg) {
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if (msg.memberName != #call) return super.noSuchMethod(msg);
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return msg.positionalArguments.join(",");
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}
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}
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main() {
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dynamic f = new MultiArityFunction();
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Expect.isTrue(f is Function);
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Expect.equals('a', f('a'));
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Expect.equals('a,b', f('a', 'b'));
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Expect.equals('a,b,c', f('a', 'b', 'c'));
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Expect.equals('a', Function.apply(f, ['a']));
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Expect.equals('a,b', Function.apply(f, ['a', 'b']));
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Expect.equals('a,b,c', Function.apply(f, ['a', 'b', 'c']));
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Expect.throwsNoSuchMethodError(() => f.foo('a', 'b', 'c'));
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ClosureMirror cm = reflect(f) as ClosureMirror;
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Expect.isTrue(cm is ClosureMirror);
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Expect.equals('a', cm.apply(['a']).reflectee);
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Expect.equals('a,b', cm.apply(['a', 'b']).reflectee);
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Expect.equals('a,b,c', cm.apply(['a', 'b', 'c']).reflectee);
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MethodMirror mm = cm.function;
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Expect.isNull(mm);
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ClassMirror km = cm.type;
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Expect.equals(reflectClass(MultiArityFunction), km);
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}
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