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Print actual enum variant

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This commit is contained in:
Dániel Buga 2021-01-02 11:06:30 +01:00
parent eb0d5be441
commit e0300716ef
3 changed files with 39 additions and 16 deletions
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49
compiler/rustc_typeck/src/check/expr.rs
View File

@ -1381,19 +1381,42 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
ty,
);
match variant.ctor_kind {
CtorKind::Fn => {
err.span_label(variant.ident.span, format!("`{adt}` defined here", adt = ty));
err.span_label(field.ident.span, "field does not exist");
err.span_label(
ty_span,
format!(
"`{adt}` is a tuple {kind_name}, \
use the appropriate syntax: `{adt}(/* fields */)`",
adt = ty,
kind_name = kind_name
),
);
}
CtorKind::Fn => match ty.kind() {
ty::Adt(adt, ..) if adt.is_enum() => {
err.span_label(
variant.ident.span,
format!(
"`{adt}::{variant}` defined here",
adt = ty,
variant = variant.ident,
),
);
err.span_label(field.ident.span, "field does not exist");
err.span_label(
ty_span,
format!(
"`{adt}::{variant}` is a tuple {kind_name}, \
use the appropriate syntax: `{adt}::{variant}(/* fields */)`",
adt = ty,
variant = variant.ident,
kind_name = kind_name
),
);
}
_ => {
err.span_label(variant.ident.span, format!("`{adt}` defined here", adt = ty));
err.span_label(field.ident.span, "field does not exist");
err.span_label(
ty_span,
format!(
"`{adt}` is a tuple {kind_name}, \
use the appropriate syntax: `{adt}(/* fields */)`",
adt = ty,
kind_name = kind_name
),
);
}
},
_ => {
// prevent all specified fields from being suggested
let skip_fields = skip_fields.iter().map(|ref x| x.ident.name);

2
src/test/ui/issues/issue-80607.rs
View File

@ -4,7 +4,7 @@ pub enum Enum {
}
pub fn foo(x: i32) -> Enum {
Enum::V1 { x } //~ ERROR field does not exist
Enum::V1 { x } //~ ERROR `Enum::V1` has no field named `x`
}
fn main() {}

4
src/test/ui/issues/issue-80607.stderr
View File

@ -2,12 +2,12 @@ error[E0559]: variant `Enum::V1` has no field named `x`
--> $DIR/issue-80607.rs:7:16
|
LL | V1(i32),
| -- `Enum` defined here
| -- `Enum::V1` defined here
...
LL | Enum::V1 { x }
| -------- ^ field does not exist
| |
| `Enum` is a tuple variant, use the appropriate syntax: `Enum(/* fields */)`
| `Enum::V1` is a tuple variant, use the appropriate syntax: `Enum::V1(/* fields */)`
error: aborting due to previous error