enum-variant-generic-args: describe + account for unit variants.
This commit is contained in:
Mazdak Farrokhzad
parent
26f98fdf58
commit
a70653ac7e
@ -1,4 +1,10 @@
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enum Enum<T> { TSVariant(T), SVariant { v: T } }
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// Checks that applied type arguments of enums, and aliases to them, are respected.
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// For example, `Self` is never a type constructor. Therefore, no types can be applied to it.
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//
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// We also check that the variant to an type-aliased enum cannot be type applied whether
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// that alias is generic or monomorphic.
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enum Enum<T> { TSVariant(T), SVariant { v: T }, UVariant }
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type Alias<T> = Enum<T>;
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type AliasFixed = Enum<()>;
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@ -30,6 +36,16 @@ impl<T> Enum<T> {
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//~^^ ERROR type arguments are not allowed for this type [E0109]
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//~^^^ ERROR mismatched types [E0308]
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}
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fn u_variant() {
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Self::UVariant::<()>;
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//~^ ERROR type arguments are not allowed for this type [E0109]
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Self::<()>::UVariant;
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//~^ ERROR type arguments are not allowed for this type [E0109]
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Self::<()>::UVariant::<()>;
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//~^ ERROR type arguments are not allowed for this type [E0109]
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//~^^ ERROR type arguments are not allowed for this type [E0109]
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}
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}
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fn main() {
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@ -68,4 +84,22 @@ fn main() {
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AliasFixed::<()>::SVariant::<()> { v: () };
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//~^ ERROR type arguments are not allowed for this type [E0109]
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//~^^ ERROR wrong number of type arguments: expected 0, found 1 [E0107]
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// Unit variant
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Enum::<()>::UVariant::<()>;
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//~^ ERROR type arguments are not allowed for this type [E0109]
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Alias::UVariant::<()>;
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//~^ ERROR type arguments are not allowed for this type [E0109]
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Alias::<()>::UVariant::<()>;
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//~^ ERROR type arguments are not allowed for this type [E0109]
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AliasFixed::UVariant::<()>;
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//~^ ERROR type arguments are not allowed for this type [E0109]
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AliasFixed::<()>::UVariant;
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//~^ ERROR wrong number of type arguments: expected 0, found 1 [E0107]
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AliasFixed::<()>::UVariant::<()>;
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//~^ ERROR type arguments are not allowed for this type [E0109]
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//~^^ ERROR wrong number of type arguments: expected 0, found 1 [E0107]
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}
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@ -1,5 +1,5 @@
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error[E0308]: mismatched types
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--> $DIR/enum-variant-generic-args.rs:7:25
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--> $DIR/enum-variant-generic-args.rs:13:25
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LL | Self::TSVariant(());
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| ^^ expected type parameter, found ()
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@ -8,19 +8,19 @@ LL | Self::TSVariant(());
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found type `()`
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:9:27
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--> $DIR/enum-variant-generic-args.rs:15:27
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LL | Self::TSVariant::<()>(());
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:11:16
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--> $DIR/enum-variant-generic-args.rs:17:16
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LL | Self::<()>::TSVariant(());
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| ^^ type argument not allowed
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error[E0308]: mismatched types
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--> $DIR/enum-variant-generic-args.rs:11:31
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--> $DIR/enum-variant-generic-args.rs:17:31
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LL | Self::<()>::TSVariant(());
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| ^^ expected type parameter, found ()
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@ -29,19 +29,19 @@ LL | Self::<()>::TSVariant(());
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found type `()`
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:14:16
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--> $DIR/enum-variant-generic-args.rs:20:16
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LL | Self::<()>::TSVariant::<()>(());
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:14:33
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--> $DIR/enum-variant-generic-args.rs:20:33
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LL | Self::<()>::TSVariant::<()>(());
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| ^^ type argument not allowed
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error[E0308]: mismatched types
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--> $DIR/enum-variant-generic-args.rs:20:29
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--> $DIR/enum-variant-generic-args.rs:26:29
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LL | Self::SVariant { v: () };
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| ^^ expected type parameter, found ()
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@ -50,13 +50,13 @@ LL | Self::SVariant { v: () };
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found type `()`
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:22:26
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--> $DIR/enum-variant-generic-args.rs:28:26
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LL | Self::SVariant::<()> { v: () };
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| ^^ type argument not allowed
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error[E0308]: mismatched types
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--> $DIR/enum-variant-generic-args.rs:22:35
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--> $DIR/enum-variant-generic-args.rs:28:35
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LL | Self::SVariant::<()> { v: () };
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| ^^ expected type parameter, found ()
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@ -65,13 +65,13 @@ LL | Self::SVariant::<()> { v: () };
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found type `()`
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:25:16
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--> $DIR/enum-variant-generic-args.rs:31:16
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LL | Self::<()>::SVariant { v: () };
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| ^^ type argument not allowed
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error[E0308]: mismatched types
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--> $DIR/enum-variant-generic-args.rs:25:35
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--> $DIR/enum-variant-generic-args.rs:31:35
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LL | Self::<()>::SVariant { v: () };
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| ^^ expected type parameter, found ()
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@ -80,19 +80,19 @@ LL | Self::<()>::SVariant { v: () };
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found type `()`
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:28:16
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--> $DIR/enum-variant-generic-args.rs:34:16
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LL | Self::<()>::SVariant::<()> { v: () };
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:28:32
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--> $DIR/enum-variant-generic-args.rs:34:32
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LL | Self::<()>::SVariant::<()> { v: () };
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| ^^ type argument not allowed
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error[E0308]: mismatched types
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--> $DIR/enum-variant-generic-args.rs:28:41
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--> $DIR/enum-variant-generic-args.rs:34:41
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LL | Self::<()>::SVariant::<()> { v: () };
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| ^^ expected type parameter, found ()
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@ -101,90 +101,156 @@ LL | Self::<()>::SVariant::<()> { v: () };
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found type `()`
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:38:29
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--> $DIR/enum-variant-generic-args.rs:41:26
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LL | Self::UVariant::<()>;
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:43:16
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LL | Self::<()>::UVariant;
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:45:16
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LL | Self::<()>::UVariant::<()>;
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:45:32
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LL | Self::<()>::UVariant::<()>;
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:54:29
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LL | Enum::<()>::TSVariant::<()>(());
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:41:24
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--> $DIR/enum-variant-generic-args.rs:57:24
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LL | Alias::TSVariant::<()>(());
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:43:30
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--> $DIR/enum-variant-generic-args.rs:59:30
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LL | Alias::<()>::TSVariant::<()>(());
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:46:29
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--> $DIR/enum-variant-generic-args.rs:62:29
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LL | AliasFixed::TSVariant::<()>(());
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| ^^ type argument not allowed
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error[E0107]: wrong number of type arguments: expected 0, found 1
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--> $DIR/enum-variant-generic-args.rs:48:18
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--> $DIR/enum-variant-generic-args.rs:64:18
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LL | AliasFixed::<()>::TSVariant(());
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| ^^ unexpected type argument
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error[E0107]: wrong number of type arguments: expected 0, found 1
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--> $DIR/enum-variant-generic-args.rs:50:18
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--> $DIR/enum-variant-generic-args.rs:66:18
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LL | AliasFixed::<()>::TSVariant::<()>(());
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| ^^ unexpected type argument
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:50:35
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--> $DIR/enum-variant-generic-args.rs:66:35
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LL | AliasFixed::<()>::TSVariant::<()>(());
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:56:28
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--> $DIR/enum-variant-generic-args.rs:72:28
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LL | Enum::<()>::SVariant::<()> { v: () };
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:59:23
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--> $DIR/enum-variant-generic-args.rs:75:23
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LL | Alias::SVariant::<()> { v: () };
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:61:29
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--> $DIR/enum-variant-generic-args.rs:77:29
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LL | Alias::<()>::SVariant::<()> { v: () };
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:64:28
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--> $DIR/enum-variant-generic-args.rs:80:28
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LL | AliasFixed::SVariant::<()> { v: () };
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| ^^ type argument not allowed
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error[E0107]: wrong number of type arguments: expected 0, found 1
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--> $DIR/enum-variant-generic-args.rs:66:18
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--> $DIR/enum-variant-generic-args.rs:82:18
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LL | AliasFixed::<()>::SVariant { v: () };
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| ^^ unexpected type argument
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error[E0107]: wrong number of type arguments: expected 0, found 1
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--> $DIR/enum-variant-generic-args.rs:68:18
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--> $DIR/enum-variant-generic-args.rs:84:18
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LL | AliasFixed::<()>::SVariant::<()> { v: () };
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| ^^ unexpected type argument
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:68:34
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--> $DIR/enum-variant-generic-args.rs:84:34
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LL | AliasFixed::<()>::SVariant::<()> { v: () };
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| ^^ type argument not allowed
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error: aborting due to 28 previous errors
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:90:28
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LL | Enum::<()>::UVariant::<()>;
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:93:23
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LL | Alias::UVariant::<()>;
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:95:29
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LL | Alias::<()>::UVariant::<()>;
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| ^^ type argument not allowed
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:98:28
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LL | AliasFixed::UVariant::<()>;
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| ^^ type argument not allowed
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error[E0107]: wrong number of type arguments: expected 0, found 1
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--> $DIR/enum-variant-generic-args.rs:100:18
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LL | AliasFixed::<()>::UVariant;
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| ^^ unexpected type argument
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error[E0107]: wrong number of type arguments: expected 0, found 1
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--> $DIR/enum-variant-generic-args.rs:102:18
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LL | AliasFixed::<()>::UVariant::<()>;
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| ^^ unexpected type argument
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error[E0109]: type arguments are not allowed for this type
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--> $DIR/enum-variant-generic-args.rs:102:34
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LL | AliasFixed::<()>::UVariant::<()>;
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| ^^ type argument not allowed
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error: aborting due to 39 previous errors
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Some errors have detailed explanations: E0107, E0109, E0308.
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For more information about an error, try `rustc --explain E0107`.
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