mirror of
https://github.com/dart-lang/sdk
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c10ecb8fe5
Change-Id: I4f3b728a94291bf0a31a5f38af9d8b877a9900af Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/363702 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: William Hesse <whesse@google.com>
155 lines
4.8 KiB
Dart
155 lines
4.8 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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main() {
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const f0 = 42;
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const f1;
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// ^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_NOT_INITIALIZED
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// [cfe] The const variable 'f1' must be initialized.
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const int f2 = 87;
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const int f3;
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// ^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_NOT_INITIALIZED
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// [cfe] The const variable 'f3' must be initialized.
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Expect.equals(42, f0);
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Expect.equals(87, f2);
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Expect.equals(42, F0);
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Expect.equals(null, F1);
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Expect.equals(87, F2);
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Expect.equals(null, F3);
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Expect.isTrue(P0 is Point);
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Expect.isTrue(P1 is int);
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Expect.isTrue(P2 is Point);
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Expect.isTrue(P3 is int);
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Expect.isTrue(A0 is int);
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Expect.isTrue(A1 is int);
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Expect.isTrue(A2 is int);
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Expect.isTrue(A3 is int);
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Expect.isTrue(C0.X is C1);
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Expect.isTrue(C0.X.x is C1);
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Expect.equals("Hello 42", B2);
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Expect.equals("42Hello", B3);
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const cf1 = identical(const Point(1, 2), const Point(1, 2));
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const cf2 = identical(const Point(1, 2), new Point(1, 2));
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// ^^^^^^^^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
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// [cfe] New expression is not a constant expression.
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// ^
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// [cfe] New expression is not a constant expression.
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var f4 = B4;
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var f5 = B5;
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f6(const p1) {}
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// ^^^^^
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// [analyzer] SYNTACTIC_ERROR.EXTRANEOUS_MODIFIER
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// [cfe] Can't have modifier 'const' here.
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}
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const F0 = 42;
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const F1;
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// ^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_NOT_INITIALIZED
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// [cfe] The const variable 'F1' must be initialized.
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const int F2 = 87;
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const int F3;
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// ^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_NOT_INITIALIZED
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// [cfe] Field 'F3' should be initialized because its type 'int' doesn't allow null.
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// [cfe] The const variable 'F3' must be initialized.
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// ^
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// [cfe] The value 'null' can't be assigned to a variable of type 'int' because 'int' is not nullable.
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class Point {
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final x, y;
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const Point(this.x, this.y);
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operator +(int other) => x;
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}
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// Check that compile time expressions can include invocations of
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// user-defined const constructors.
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const P0 = const Point(0, 0);
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const P1 = const Point(0, 0) + 1;
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// ^^^^^^^^^^^^^^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_EVAL_TYPE_NUM_STRING
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// ^
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// [cfe] Constant evaluation error:
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const P2 = new Point(0, 0);
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// ^^^^^^^^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
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// [cfe] New expression is not a constant expression.
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// ^
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// [cfe] New expression is not a constant expression.
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const P3 = new Point(0, 0) + 1;
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// ^^^^^^^^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
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// [cfe] New expression is not a constant expression.
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// ^
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// [cfe] New expression is not a constant expression.
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// Check that we cannot have cyclic references in compile time
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// expressions.
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const A0 = 42;
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const A1 = A0 + 1;
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const A2 = A3 + 1;
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// ^^
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// [analyzer] COMPILE_TIME_ERROR.RECURSIVE_COMPILE_TIME_CONSTANT
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// [cfe] Can't infer the type of 'A2': circularity found during type inference.
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// ^
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// [cfe] Constant evaluation error:
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const A3 = A2 + 1;
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// ^^
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// [analyzer] COMPILE_TIME_ERROR.RECURSIVE_COMPILE_TIME_CONSTANT
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class C0 {
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static const X = const C1();
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// ^
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// [analyzer] COMPILE_TIME_ERROR.RECURSIVE_COMPILE_TIME_CONSTANT
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}
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class C1 {
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const C1()
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// ^^
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// [analyzer] COMPILE_TIME_ERROR.RECURSIVE_CONSTANT_CONSTRUCTOR
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: x = C0.X
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//^
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// [analyzer] COMPILE_TIME_ERROR.FIELD_INITIALIZED_IN_INITIALIZER_AND_DECLARATION
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// ^
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// [cfe] 'x' is a final instance variable that was initialized at the declaration.
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// [cfe] Cannot invoke a non-'const' constructor where a const expression is expected.
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// [cfe] Not a constant expression.
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;
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final x = null;
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}
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// Check that sub-expressions of binary + are numeric.
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const B0 = 42;
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const B1 = "Hello";
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const B2 = "$B1 $B0";
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const B3 = B0 + B1;
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// ^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_EVAL_TYPE_NUM
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// ^^
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// [analyzer] COMPILE_TIME_ERROR.ARGUMENT_TYPE_NOT_ASSIGNABLE
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// [cfe] A value of type 'String' can't be assigned to a variable of type 'num'.
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// Check identical.
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const B4 = identical(1, new Point(1, 2));
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// ^^^^^^^^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
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// [cfe] New expression is not a constant expression.
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// ^
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// [cfe] New expression is not a constant expression.
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const B5 = identical(1, const Point(1, 2));
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