bjoernager/rust
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Remove redundant logic to suggest as_ref

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This commit is contained in:
Michael Goulet 2022-06-27 15:43:23 -07:00
parent 8308806403
commit f4fdcc7e24
6 changed files with 102 additions and 56 deletions
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53
compiler/rustc_borrowck/src/diagnostics/move_errors.rs
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@ -4,7 +4,7 @@ use rustc_middle::ty;
use rustc_mir_dataflow::move_paths::{
IllegalMoveOrigin, IllegalMoveOriginKind, LookupResult, MoveError, MovePathIndex,
};
use rustc_span::{sym, Span};
use rustc_span::Span;
use crate::diagnostics::UseSpans;
use crate::prefixes::PrefixSet;
@ -218,29 +218,13 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
fn report(&mut self, error: GroupedMoveError<'tcx>) {
let (mut err, err_span) = {
let (span, use_spans, original_path, kind, has_complex_bindings): (
Span,
Option<UseSpans<'tcx>>,
Place<'tcx>,
&IllegalMoveOriginKind<'_>,
bool,
) = match error {
GroupedMoveError::MovesFromPlace {
span,
original_path,
ref kind,
ref binds_to,
..
let (span, use_spans, original_path, kind) = match error {
GroupedMoveError::MovesFromPlace { span, original_path, ref kind, .. }
| GroupedMoveError::MovesFromValue { span, original_path, ref kind, .. } => {
(span, None, original_path, kind)
}
| GroupedMoveError::MovesFromValue {
span,
original_path,
ref kind,
ref binds_to,
..
} => (span, None, original_path, kind, !binds_to.is_empty()),
GroupedMoveError::OtherIllegalMove { use_spans, original_path, ref kind } => {
(use_spans.args_or_use(), Some(use_spans), original_path, kind, false)
(use_spans.args_or_use(), Some(use_spans), original_path, kind)
}
};
debug!(
@ -259,7 +243,6 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
target_place,
span,
use_spans,
has_complex_bindings,
),
&IllegalMoveOriginKind::InteriorOfTypeWithDestructor { container_ty: ty } => {
self.cannot_move_out_of_interior_of_drop(span, ty)
@ -302,7 +285,6 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
deref_target_place: Place<'tcx>,
span: Span,
use_spans: Option<UseSpans<'tcx>>,
has_complex_bindings: bool,
) -> DiagnosticBuilder<'a, ErrorGuaranteed> {
// Inspect the type of the content behind the
// borrow to provide feedback about why this
@ -399,28 +381,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
}
}
};
let ty = move_place.ty(self.body, self.infcx.tcx).ty;
let def_id = match *ty.kind() {
ty::Adt(self_def, _) => self_def.did(),
ty::Foreign(def_id)
| ty::FnDef(def_id, _)
| ty::Closure(def_id, _)
| ty::Generator(def_id, ..)
| ty::Opaque(def_id, _) => def_id,
_ => return err,
};
let diag_name = self.infcx.tcx.get_diagnostic_name(def_id);
if matches!(diag_name, Some(sym::Option | sym::Result))
&& use_spans.map_or(true, |v| !v.for_closure())
&& !has_complex_bindings
{
err.span_suggestion_verbose(
span.shrink_to_hi(),
&format!("consider borrowing the `{}`'s content", diag_name.unwrap()),
".as_ref()",
Applicability::MaybeIncorrect,
);
} else if let Some(use_spans) = use_spans {
if let Some(use_spans) = use_spans {
self.explain_captures(
&mut err, span, span, use_spans, move_place, None, "", "", "", false, true,
);