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// Checks that applied type arguments of enums, and aliases to them, are respected.
// For example, `Self` is never a type constructor. Therefore, no types can be applied to it.
//
// We also check that the variant to an type-aliased enum cannot be type applied whether
// that alias is generic or monomorphic.
enum Enum<T> { TSVariant(T), SVariant { v: T }, UVariant }
type Alias<T> = Enum<T>;
type AliasFixed = Enum<()>;
impl<T> Enum<T> {
fn ts_variant() {
Self::TSVariant(());
//~^ ERROR mismatched types [E0308]
Self::TSVariant::<()>(());
//~^ ERROR type arguments are not allowed on this type [E0109]
Self::<()>::TSVariant(());
//~^ ERROR type arguments are not allowed on self type [E0109]
//~| ERROR mismatched types [E0308]
Self::<()>::TSVariant::<()>(());
//~^ ERROR type arguments are not allowed on self type [E0109]
//~| ERROR type arguments are not allowed on this type [E0109]
}
fn s_variant() {
Self::SVariant { v: () };
//~^ ERROR mismatched types [E0308]
Self::SVariant::<()> { v: () };
//~^ ERROR type arguments are not allowed on this type [E0109]
//~| ERROR mismatched types [E0308]
Self::<()>::SVariant { v: () };
//~^ ERROR type arguments are not allowed on self type [E0109]
//~| ERROR mismatched types [E0308]
Self::<()>::SVariant::<()> { v: () };
//~^ ERROR type arguments are not allowed on self type [E0109]
//~| ERROR type arguments are not allowed on this type [E0109]
//~| ERROR mismatched types [E0308]
}
fn u_variant() {
Self::UVariant::<()>;
//~^ ERROR type arguments are not allowed on this type [E0109]
Self::<()>::UVariant;
//~^ ERROR type arguments are not allowed on self type [E0109]
Self::<()>::UVariant::<()>;
//~^ ERROR type arguments are not allowed on self type [E0109]
//~| ERROR type arguments are not allowed on this type [E0109]
}
}
fn main() {
// Tuple struct variant
Enum::<()>::TSVariant::<()>(());
//~^ ERROR type arguments are not allowed on tuple variant `TSVariant` [E0109]
Alias::TSVariant::<()>(());
//~^ ERROR type arguments are not allowed on this type [E0109]
Alias::<()>::TSVariant::<()>(());
//~^ ERROR type arguments are not allowed on this type [E0109]
AliasFixed::TSVariant::<()>(());
//~^ ERROR type arguments are not allowed on this type [E0109]
AliasFixed::<()>::TSVariant(());
//~^ ERROR type alias takes 0 generic arguments but 1 generic argument was supplied [E0107]
AliasFixed::<()>::TSVariant::<()>(());
//~^ ERROR type arguments are not allowed on this type [E0109]
//~| ERROR type alias takes 0 generic arguments but 1 generic argument was supplied [E0107]
// Struct variant
Enum::<()>::SVariant::<()> { v: () };
//~^ ERROR type arguments are not allowed on variant `SVariant` [E0109]
Alias::SVariant::<()> { v: () };
//~^ ERROR type arguments are not allowed on this type [E0109]
Alias::<()>::SVariant::<()> { v: () };
//~^ ERROR type arguments are not allowed on this type [E0109]
AliasFixed::SVariant::<()> { v: () };
//~^ ERROR type arguments are not allowed on this type [E0109]
AliasFixed::<()>::SVariant { v: () };
//~^ ERROR type alias takes 0 generic arguments but 1 generic argument was supplied [E0107]
AliasFixed::<()>::SVariant::<()> { v: () };
//~^ ERROR type arguments are not allowed on this type [E0109]
//~| ERROR type alias takes 0 generic arguments but 1 generic argument was supplied [E0107]
// Unit variant
Enum::<()>::UVariant::<()>;
//~^ ERROR type arguments are not allowed on unit variant `UVariant` [E0109]
Alias::UVariant::<()>;
//~^ ERROR type arguments are not allowed on this type [E0109]
Alias::<()>::UVariant::<()>;
//~^ ERROR type arguments are not allowed on this type [E0109]
AliasFixed::UVariant::<()>;
//~^ ERROR type arguments are not allowed on this type [E0109]
AliasFixed::<()>::UVariant;
//~^ ERROR type alias takes 0 generic arguments but 1 generic argument was supplied [E0107]
AliasFixed::<()>::UVariant::<()>;
//~^ ERROR type arguments are not allowed on this type [E0109]
//~| ERROR type alias takes 0 generic arguments but 1 generic argument was supplied [E0107]
}
|
