Kallen Tu
f7f8ab8986
Language tests for the following: - A compile-time error occurs if an assignment to a primary parameter occurs in the initializer list of the body part of a primary constructor. - A compile-time error occurs if an instance variable declaration has an initializing expression, and it is also initialized by an element in the initializer list of the body part, or by an initializing formal of the primary constructor. - The modifier `final` on a parameter in a declaring constructor specifies that the instance variable declaration which is induced by this declaring constructor parameter is `final`. - A compile-time error occurs if a class, enum, or extension type has a primary constructor whose name is also the name of a constructor declared in the body. - Extension types are allowed to have non-redirecting generative constructors, implicitly or explicitly initializing the representation variable. - A compile-time error occurs if a class, mixin class, enum, or extension type declares a primary constructor whose name is `C.n`, and the body declares a static member whose basename is `n`. - Consider a factory constructor declaration of the form `factory C(...` optionally starting with the modifier `const`. Assume that `C` is the name of the enclosing class, mixin class, enum, or extension type. In this situation, the declaration declares a constructor whose name is `C`. The rule which is being tested here is also applicable when the declaration has some of the keywords external and augment, but we don't test those kinds of constructors here. - It is an error to have multiple primary constructor bodies. - Tests for type inference of declaring parameters in primary constructors, including override inference and inference from default values. Bug: https://github.com/dart-lang/sdk/issues/61687 Change-Id: If804c99c317ab53643420e00d6dc266720bca2f1 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/483626 Commit-Queue: Kallen Tu <kallentu@google.com> Reviewed-by: Erik Ernst <eernst@google.com>
100 lines
3.9 KiB
Dart
100 lines
3.9 KiB
Dart
// Copyright (c) 2026, 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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// A compile-time error occurs if an assignment to a primary parameter occurs
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// in the initializing expression of a non-late instance variable.
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// SharedOptions=--enable-experiment=primary-constructors
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class C(int x, Object? z) {
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Record y = (
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++x,
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//^
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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--x,
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//^
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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x++,
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// [error column 5, length 1]
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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x--,
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// [error column 5, length 1]
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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x = 2,
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// [error column 5, length 1]
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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x += 2,
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// [error column 5, length 1]
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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x -= 2,
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// [error column 5, length 1]
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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(x) = 2,
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// [error column 6, length 1]
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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[x] = [2],
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// [error column 6, length 1]
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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{null: x} = {null: 2},
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// ^
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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(x, name: _) = (2, name: true),
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// [error column 6, length 1]
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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(x && z) = 2,
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// [error column 6, length 1]
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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int(runtimeType: z) = 2,
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// ^
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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);
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}
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// A compile-time error occurs if an assignment to a primary parameter occurs
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// in the initializer list of the body part of a primary constructor.
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class C2(int x) {
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int y;
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this : y = x++;
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// ^
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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}
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class C3(int x) {
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this : assert(x++ == 2);
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// ^
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// [analyzer] COMPILE_TIME_ERROR.ASSIGNMENT_TO_PRIMARY_CONSTRUCTOR_PARAMETER
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// [cfe] A primary constructor parameter can't be assigned to in an initializer.
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}
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