Robert Nystrom
959bf6e1c3
Change-Id: I6cbad15f7151a1a5e1ece71f91ddfb826dca5de5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/141762 Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Leaf Petersen <leafp@google.com> Commit-Queue: Bob Nystrom <rnystrom@google.com>
111 lines
2.6 KiB
Dart
111 lines
2.6 KiB
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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import "package:expect/expect.dart";
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// Test that 'identical(a,b)' is a compile-time constant.
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class C {
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final x;
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const C(this.x);
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static f3() {}
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static f4() {}
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}
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const i1 = 1;
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const i2 = 2;
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const d1 = 1.5;
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const d2 = 2.5;
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const b1 = true;
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const b2 = false;
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const s1 = "1";
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const s2 = "2";
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const l1 = const [1, 2];
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const l2 = const [2, 3];
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const m1 = const {"x": 1};
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const m2 = const {"x": 2};
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const c1 = const C(1);
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const c2 = const C(2);
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f1() {}
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f2() {}
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const id = identical;
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class CT {
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final x1;
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final x2;
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final bool id;
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const CT(var x1, var x2)
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: this.x1 = x1,
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this.x2 = x2,
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this.id = identical(x1, x2);
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void test(void expect(a, String b), name) {
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expect(id, "$name: identical($x1,$x2)");
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}
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}
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const trueTests = const [
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const CT(2 - 1, i1),
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const CT(1 + 1, i2),
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const CT(2.5 - 1.0, d1),
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const CT(1.5 + 1.0, d2),
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const CT(false || true, b1),
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const CT(true && false, b2),
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const CT('$i1', s1),
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const CT('$i2', s2),
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const CT(const [i1, 2], l1),
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const CT(const [i2, 3], l2),
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const CT(const {"x": i1}, m1),
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const CT(const {"x": i2}, m2),
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const CT(const C(i1), c1),
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const CT(const C(i2), c2),
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const CT(f1, f1),
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const CT(f2, f2),
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const CT(C.f3, C.f3),
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const CT(C.f4, C.f4),
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const CT(id, identical),
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];
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const falseTests = const [
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const CT(i1, i2),
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const CT(d1, d2),
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const CT(b1, b2),
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const CT(s1, s2),
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const CT(l1, l2),
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const CT(m1, m2),
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const CT(c1, c2),
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const CT(f1, f2),
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const CT(i1, d1),
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const CT(d1, b1),
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const CT(b1, s1),
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const CT(s1, l1),
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const CT(l1, m1),
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const CT(m1, c1),
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const CT(c1, f1),
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const CT(f1, C.f3),
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const CT(C.f3, identical),
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const CT(identical, i1),
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];
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// Not a constant if it's not written 'identical'.
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const idtest = id(i1, i2); // //# 01: compile-time error
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// Not a constant if aliased? (Current interpretation, waiting for
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// confirmation).
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class T { // //# 02: compile-time error
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static const identical = id; // //# 02: continued
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static const idtest2 = identical(i1, i2); // //# 02: continued
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} // //# 02: continued
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main() {
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for (int i = 0; i < trueTests.length; i++) {
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trueTests[i].test(Expect.isTrue, "true[$i]");
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}
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for (int i = 0; i < falseTests.length; i++) {
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falseTests[i].test(Expect.isFalse, "false[$i]");
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}
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var x = idtest; // //# 01: continued
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var x = T.idtest2; // //# 02: continued
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}
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