| // Copyright (c) 2023, 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 |
| /// The pattern variable set for a pattern is: |
| /// |
| /// Logical-or: The pattern variable set of either branch. It is a compile-time |
| /// error if the two branches do not have equal pattern variable sets. Two |
| /// pattern variable sets are equal if they have the same set of names and each |
| /// corresponding pair of variables have the same finality and their types are |
| /// structurally equivalent after NORM(). |
| /// |
| /// @description Check that it is a compile-time error if the two branches do |
| /// not have equal pattern variable sets |
| /// @author sgrekhov22@gmail.com |
| |
| String test1(Object? x) { |
| switch (x) { |
| case int v0 || [var v0] when v0 == 0: |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "logical-or"; |
| case var v1 || [var v1] && [var v2, ...] when v1 == 1: |
| // ^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "logical-and"; |
| case final num v2 || final v2 as int when v2 == 2: |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "cast"; |
| case final int v3 || final int? v3? when v3 == 3: |
| // ^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "null-check"; |
| case final int v4 || final int? v4! when v4 == 4: |
| // ^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "null-assert"; |
| case var v5 || final v5 when v5 == 5: |
| // ^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "variable"; |
| case final num? v6 || (num? v6) when v6! == 6: |
| // ^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "parenthesized"; |
| case final v7 || [final int v7] when v7 == 7: |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "list"; |
| case var v8 || {"key1": var v88} when v8 == 8: |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "map"; |
| case final int v9 || (final int v9, n: v99) when v9 == 9: |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "record"; |
| case final int v10 || Square(:var sizeAsInt) when v10 == 10: |
| // ^^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "object"; |
| default: |
| return "no match"; |
| } |
| } |
| |
| String test2(Object? x) { |
| if (x case int v0 || [var v0] when v0 == 0) |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "logical-or"; |
| if (x case var v1 || [var v1] && [var v2, ...] when v1 == 1) |
| // ^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "logical-and"; |
| if (x case final num v2 || final v2 as int when v2 == 2) |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "cast"; |
| if (x case final int v3 || final int? v3? when v3 == 3) |
| // ^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "null-check"; |
| if (x case final int v4! || final int? v4! when v4 == 4) |
| // ^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "null-assert"; |
| if (x case var v5 || final v5 when v5 == 5) |
| // ^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "variable"; |
| if (x case final num? v6 || (num? v6) when v6! == 6) |
| // ^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "parenthesized"; |
| if (x case final v7 || [final int v7] when v7 == 7) |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "list"; |
| if (x case var v8 || {"key1": var v88} when v8 == 8) |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "map"; |
| if (x case final int v9 || (final int v9, n: v99) when v9 == 9) |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "record"; |
| if (x case final int v10 || Square(:var sizeAsInt) when v10 == 10) |
| // ^^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| return "object"; |
| return "no match"; |
| } |
| |
| String test3(Object? x) => |
| switch (x) { |
| int v0 || [var v0] when v0 == 0 => "logical-or", |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| var v1 || [var v1] && [var v2, ...] when v1 == 1 => "logical-and", |
| // ^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| final num v2 || final v2 as int when v2 == 2 => "cast", |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| final int v3 || final int? v3? when v3 == 3 => "null-check", |
| // ^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| final int v4 || final int? v4! when v4 == 4 => "null-assert", |
| // ^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| var v5 || final v5 when v5 == 5 => "variable", |
| // ^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| final num? v6 || (num? v6) when v6! == 6 => "parenthesized", |
| // ^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| final v7 || [final int v7] when v7 == 7 => "list", |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| var v8 || {"key1": var v88} when v8 == 8 => "map", |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| final int v9 || (final int v9, n: v99) when v9 == 9 => "record", |
| // ^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| final int v10 || Square(:var sizeAsInt) when v10 == 10 => "object", |
| // ^^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| _ => "no match" |
| }; |
| |
| main () { |
| test1(1); |
| test2(1); |
| test3(1); |
| } |
