Lasse Reichstein Holst Nielsen
8abf6c67ad
Tweaks. Change-Id: I0fb8b4088c86e5b83f1c76db8a2dfa7c9023c1b9 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/99000 Commit-Queue: Lasse R.H. Nielsen <lrn@google.com> Reviewed-by: Erik Ernst <eernst@google.com>
101 lines
2.9 KiB
Dart
101 lines
2.9 KiB
Dart
// Copyright (c) 2019, 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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// Tests that the correct places allows, and requires, potentially constant
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// expressions.
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bool get nonConst => true;
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class C {
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final v;
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const C(this.v);
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// Redirecting generative constructor invocation parameters,
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// must be potenentially constant.
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const C.r1() : this(const C(null));
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// Only evaluates the true branch when passed `true` as argument.
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const C.r2(bool b) : this(b ? null : 1 ~/ 0);
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const C.rn1() : this(nonConst);
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// ^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.INVALID_CONSTANT
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// [cfe] Constant evaluation error:
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const C.rn2(bool b) : this(b ? null : nonConst);
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// ^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.INVALID_CONSTANT
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// [cfe] Constant evaluation error:
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// Initializer list expressions must be potentially constant.
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const C.g1() : v = const C(null);
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const C.g2(bool b) : v = b ? null : 1 ~/ 0;
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const C.gn3() : v = nonConst;
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// ^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.INVALID_CONSTANT
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// [cfe] Constant evaluation error:
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const C.gn4(bool b) : v = b ? null : nonConst;
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// ^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.INVALID_CONSTANT
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// [cfe] Constant evaluation error:
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// Constant constructor initializer list assert expressions
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// must be potentially constant (and boolean).
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const C.a1()
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: assert(const C(null) != null),
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v = null;
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const C.a2(bool b)
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: assert(b ? const C(null) != null : ((1 ~/ 0) as bool)),
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v = null;
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const C.an1()
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: assert(nonConst),
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// ^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.INVALID_CONSTANT
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// [cfe] Constant evaluation error:
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v = null;
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const C.an2(bool b)
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: assert(b ? true : nonConst),
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// ^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.INVALID_CONSTANT
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// [cfe] Constant evaluation error:
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v = null;
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}
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main() {
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var c = const C(null);
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var cc = const C(C(null));
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var r1 = const C.r1();
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var r2 = const C.r2(true);
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/// Const constructor invocation which would throw.
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/**/ const C.r2(false);
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// ^^^^^^^^^^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_EVAL_THROWS_EXCEPTION
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// ^^^^^^^^^^^
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// [cfe] Constant evaluation error:
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var g1 = const C.g1();
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var g2 = const C.g2(true);
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/**/ const C.g2(false);
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// ^^^^^^^^^^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_EVAL_THROWS_EXCEPTION
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// ^^^^^^^^^^^
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// [cfe] Constant evaluation error:
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var a1 = const C.a1();
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var a2 = const C.a2(true);
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/**/ const C.a2(false);
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// ^^^^^^^^^^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_EVAL_THROWS_EXCEPTION
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// ^^^^^^^^^^^
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// [cfe] Constant evaluation error:
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}
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