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// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// Tests syntax edge cases.
import 'package:expect/expect.dart';
void main() {
// Trailing comma after then.
Expect.listEquals([1], [if (true) 1,]);
Expect.mapEquals({1: 1}, {if (true) 1: 1,});
Expect.setEquals({1}, {if (true) 1,});
// Trailing comma after else.
Expect.listEquals([1], [if (true) 1 else 2,]);
Expect.mapEquals({1: 1}, {if (true) 1: 1 else 2: 2,});
Expect.setEquals({1}, {if (true) 1 else 2,});
// Trailing comma after for.
Expect.listEquals([1], [1, for (; false;) 2,]);
Expect.mapEquals({1: 1}, {1: 1, for (; false;) 2: 2,});
Expect.setEquals({1}, {1, for (; false;) 2,});
// Dangling else.
Expect.listEquals([1], [if (true) if (false) 0 else 1]);
Expect.listEquals([1], [if (true) if (false) 0 else 1 else 2]);
Expect.listEquals([2], [if (false) if (false) 0 else 1 else 2]);
// Precedence of then.
Expect.listEquals([1, 2, 3], [1, if (true) true ? 2 : 0, 3]);
var a = 0;
Expect.listEquals([1, 2, 3], [1, if (true) a = 2, 3]);
// Precedence of else.
Expect.listEquals([1, 2, 3], [1, if (false) 0 else true ? 2 : 0, 3]);
a = 0;
Expect.listEquals([1, 2, 3], [1, if (false) 0 else a = 2, 3]);
// Precedence of for.
Expect.listEquals([1, 2, 3],
[1, for (var i = 0; i < 1; i++) true ? 2 : 0, 3]);
a = 0;
Expect.listEquals([1, 2, 3], [1, for (var i = 0; i < 1; i++) a = 2, 3]);
}