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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/type-alias-enum-variants/type-alias-enum-variants-pass.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/type-alias-enum-variants/type-alias-enum-variants-pass.rs')
-rw-r--r-- | src/test/ui/type-alias-enum-variants/type-alias-enum-variants-pass.rs | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/test/ui/type-alias-enum-variants/type-alias-enum-variants-pass.rs b/src/test/ui/type-alias-enum-variants/type-alias-enum-variants-pass.rs new file mode 100644 index 000000000..39677733d --- /dev/null +++ b/src/test/ui/type-alias-enum-variants/type-alias-enum-variants-pass.rs @@ -0,0 +1,69 @@ +// run-pass + +// Check that it is possible to resolve, in the value namespace, +// to an `enum` variant through a type alias. This includes `Self`. +// Type qualified syntax `<Type>::Variant` also works when syntactically valid. + +#[derive(Debug, PartialEq, Eq)] +enum Foo { + Bar(i32), + Baz { i: i32 }, + Qux, +} + +type FooAlias = Foo; +type OptionAlias = Option<i32>; + +macro_rules! check_pat { + ($x:expr, $p:pat) => { + assert!(if let $p = $x { true } else { false }); + }; +} + +impl Foo { + fn bar() -> Self { + let x = Self::Bar(3); + assert_eq!(x, <Self>::Bar(3)); + check_pat!(x, Self::Bar(3)); + x + } + + fn baz() -> Self { + let x = Self::Baz { i: 42 }; + check_pat!(x, Self::Baz { i: 42 }); + x + } + + fn qux() -> Self { + let x = Self::Qux; + assert_eq!(x, <Self>::Qux); + check_pat!(x, Self::Qux); + check_pat!(x, <Self>::Qux); + x + } +} + +fn main() { + let bar = Foo::Bar(1); + assert_eq!(bar, FooAlias::Bar(1)); + assert_eq!(bar, <FooAlias>::Bar(1)); + check_pat!(bar, FooAlias::Bar(1)); + + let baz = FooAlias::Baz { i: 2 }; + assert_eq!(baz, Foo::Baz { i: 2 }); + check_pat!(baz, FooAlias::Baz { i: 2 }); + + let qux = Foo::Qux; + assert_eq!(qux, FooAlias::Qux); + assert_eq!(qux, <FooAlias>::Qux); + check_pat!(qux, FooAlias::Qux); + check_pat!(qux, <FooAlias>::Qux); + + assert_eq!(Foo::bar(), Foo::Bar(3)); + assert_eq!(Foo::baz(), Foo::Baz { i: 42 }); + assert_eq!(Foo::qux(), Foo::Qux); + + let some = Option::Some(4); + assert_eq!(some, OptionAlias::Some(4)); + check_pat!(some, OptionAlias::Some(4)); +} |