LanguageFeatures/Constant-update-2018/ShortCircuitOperators_A04_t21.dart

// 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.

/// @assertion Finally, the conditional [?]/[:] operator only evaluates one of
/// its branches, depending on whether the condition expression evaluates to
/// [true] or [false]. The other branch must also be a potentially constant
/// expression.
/// @description Checks that conditional operator [?]/[:] in constant expression
/// throws a compile error if condition is [true] and the first operand is not a
/// correct constant expression.
/// @author iarkh@unipro.ru


class MyClass1 {
  final int res;
  const MyClass1() : res = (true ? (null as String).length : 15);
}

class MyClass2 {
  final int res;
  const MyClass2(x) : res = (true ? x : 0);
}


main() {
  const res = true ? (null as String).length > 0 : "String here";
//                   ^^^^^^^^^^^^^^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  const MyClass1 res1 = MyClass1();
//                      ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  const MyClass2 res2 = MyClass2((null as String).length);
//                               ^^^^^^^^^^^^^^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

}