Robert Nystrom
361cf93984
Change-Id: I5cfab9212bb78809967de323b60ebb06913b84d1 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/425149 Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Lasse Nielsen <lrn@google.com> Commit-Queue: Lasse Nielsen <lrn@google.com>
62 lines
1.8 KiB
Dart
62 lines
1.8 KiB
Dart
// Copyright (c) 2011, 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 "package:expect/expect.dart";
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// Tests for parsing closures with complex parameter types.
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const defaultPair = Pair<int, Pair<int, int>>(-1, Pair(-2, -3));
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main() {
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test1();
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test2();
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test3();
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}
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class Pair<A, B> {
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final A fst;
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final B snd;
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const Pair(A this.fst, B this.snd);
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}
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test1() {
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// Closures with nested parameterized types.
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var cdar1 = (Pair<int, Pair<int, int>> pr) => pr.snd.fst;
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var cdar2 = (Pair<int, Pair<int, int>> pr) => pr.snd.fst;
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var e = new Pair<int, Pair<int, int>>(100, new Pair<int, int>(200, 300));
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Expect.equals(200, cdar1(e));
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Expect.equals(200, cdar2(e));
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}
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test2() {
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// Closures with nested parameterized types in optional position
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var cdar1 = ([Pair<int, Pair<int, int>> pr = defaultPair]) => pr.snd.fst;
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var cdar2 = ([Pair<int, Pair<int, int>> pr = defaultPair]) => pr.snd.fst;
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var e = new Pair<int, Pair<int, int>>(100, new Pair<int, int>(200, 300));
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Expect.equals(200, cdar1(e));
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Expect.equals(200, cdar2(e));
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}
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test3() {
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// Closures with nested parameterized types.
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var f1 = (Pair<int, Pair<int, int>> pr) => pr.snd.fst + 1;
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var f2 = (Pair<int, Pair<int, int>> pr) => pr.snd.fst + 2;
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// Closures with function type with nested parameterized types.
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var ap1 = (f(Pair<int, Pair<int, int>> pr1), Pair<int, Pair<int, int>> pr) =>
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f(pr) * 10;
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var ap2 = (f(Pair<int, Pair<int, int>> pr1), Pair<int, Pair<int, int>> pr) =>
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f(pr) * 100;
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var e = new Pair<int, Pair<int, int>>(100, new Pair<int, int>(200, 300));
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Expect.equals(2010, ap1(f1, e));
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Expect.equals(2020, ap1(f2, e));
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Expect.equals(20100, ap2(f1, e));
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Expect.equals(20200, ap2(f2, e));
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}
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