nordic-dev.net/rust
nordic-dev.net/rust
2
0
Fork 0
mirror of https://github.com/rust-lang/rust.git synced 2024-11-22 06:44:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

Use a common subdiagnostic format for generic borrows

Browse Source 
This is setup for unifing the logic for suggestions to borrow arguments in generic positions.
As of this commit, it's still special cases for `AsRef`/`Borrow`-like traits and `Fn`-like traits.
This commit is contained in:
dianne 2024-10-23 10:31:58 -07:00
parent 2280d8ea00
commit ea37000b56
5 changed files with 26 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
View File

@ -478,7 +478,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
return;
}
let mut is_mut = false;
let mut mutbl = ty::Mutability::Not;
if let Some(param) = arg_param
&& self
.infcx
@ -504,7 +504,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
]
.contains(&Some(predicate.def_id()))
{
is_mut = true;
mutbl = ty::Mutability::Mut;
}
true
} else {
@ -514,13 +514,18 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
{
// The type of the argument corresponding to the expression that got moved
// is a type parameter `T`, which is has a `T: AsRef` obligation.
let place_desc = if let Some(desc) = self.describe_place(moved_place) {
format!("`{desc}`")
} else {
"here".to_owned()
};
err.span_suggestion_verbose(
expr.span.shrink_to_lo(),
"borrow the value to avoid moving it",
format!("&{}", if is_mut { "mut " } else { "" }),
format!("consider {}borrowing {place_desc}", mutbl.mutably_str()),
mutbl.ref_prefix_str(),
Applicability::MaybeIncorrect,
);
can_suggest_clone = is_mut;
can_suggest_clone = mutbl.is_mut();
} else if let Some(local_def_id) = def_id.as_local()
&& let node = self.infcx.tcx.hir_node_by_def_id(local_def_id)
&& let Some(fn_decl) = node.fn_decl()

8
tests/ui/moves/moved-value-on-as-ref-arg.stderr
View File

@ -8,7 +8,7 @@ LL | foo(bar);
LL | let _baa = bar;
| ^^^ value used here after move
|
help: borrow the value to avoid moving it
help: consider borrowing `bar`
|
LL | foo(&bar);
| +
@ -31,7 +31,7 @@ LL | struct Bar;
...
LL | qux(bar);
| --- you could clone this value
help: borrow the value to avoid moving it
help: consider mutably borrowing `bar`
|
LL | qux(&mut bar);
| ++++
@ -46,7 +46,7 @@ LL | bat(bar);
LL | let _baa = bar;
| ^^^ value used here after move
|
help: borrow the value to avoid moving it
help: consider borrowing `bar`
|
LL | bat(&bar);
| +
@ -69,7 +69,7 @@ LL | struct Bar;
...
LL | baz(bar);
| --- you could clone this value
help: borrow the value to avoid moving it
help: consider mutably borrowing `bar`
|
LL | baz(&mut bar);
| ++++

8
tests/ui/moves/suggest-borrow-for-generic-arg.fixed
View File

@ -8,15 +8,15 @@ extern crate suggest_borrow_for_generic_arg_aux as aux;
pub fn main() {
let bar = aux::Bar;
aux::foo(&bar); //~ HELP borrow the value
aux::foo(&bar); //~ HELP consider borrowing `bar`
let _baa = bar; //~ ERROR use of moved value
let mut bar = aux::Bar;
aux::qux(&mut bar); //~ HELP borrow the value
aux::qux(&mut bar); //~ HELP consider mutably borrowing `bar`
let _baa = bar; //~ ERROR use of moved value
let bar = aux::Bar;
aux::bat(&bar); //~ HELP borrow the value
aux::bat(&bar); //~ HELP consider borrowing `bar`
let _baa = bar; //~ ERROR use of moved value
let mut bar = aux::Bar;
aux::baz(&mut bar); //~ HELP borrow the value
aux::baz(&mut bar); //~ HELP consider mutably borrowing `bar`
let _baa = bar; //~ ERROR use of moved value
}

8
tests/ui/moves/suggest-borrow-for-generic-arg.rs
View File

@ -8,15 +8,15 @@ extern crate suggest_borrow_for_generic_arg_aux as aux;
pub fn main() {
let bar = aux::Bar;
aux::foo(bar); //~ HELP borrow the value
aux::foo(bar); //~ HELP consider borrowing `bar`
let _baa = bar; //~ ERROR use of moved value
let mut bar = aux::Bar;
aux::qux(bar); //~ HELP borrow the value
aux::qux(bar); //~ HELP consider mutably borrowing `bar`
let _baa = bar; //~ ERROR use of moved value
let bar = aux::Bar;
aux::bat(bar); //~ HELP borrow the value
aux::bat(bar); //~ HELP consider borrowing `bar`
let _baa = bar; //~ ERROR use of moved value
let mut bar = aux::Bar;
aux::baz(bar); //~ HELP borrow the value
aux::baz(bar); //~ HELP consider mutably borrowing `bar`
let _baa = bar; //~ ERROR use of moved value
}

8
tests/ui/moves/suggest-borrow-for-generic-arg.stderr
View File

@ -8,7 +8,7 @@ LL | aux::foo(bar);
LL | let _baa = bar;
| ^^^ value used here after move
|
help: borrow the value to avoid moving it
help: consider borrowing `bar`
|
LL | aux::foo(&bar);
| +
@ -23,7 +23,7 @@ LL | aux::qux(bar);
LL | let _baa = bar;
| ^^^ value used here after move
|
help: borrow the value to avoid moving it
help: consider mutably borrowing `bar`
|
LL | aux::qux(&mut bar);
| ++++
@ -38,7 +38,7 @@ LL | aux::bat(bar);
LL | let _baa = bar;
| ^^^ value used here after move
|
help: borrow the value to avoid moving it
help: consider borrowing `bar`
|
LL | aux::bat(&bar);
| +
@ -53,7 +53,7 @@ LL | aux::baz(bar);
LL | let _baa = bar;
| ^^^ value used here after move
|
help: borrow the value to avoid moving it
help: consider mutably borrowing `bar`
|
LL | aux::baz(&mut bar);
| ++++