bjoernager/rust
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merge BorrowKind::Unique into BorrowKind::Mut

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This commit is contained in:
Ziru Niu 2023-05-31 06:25:27 +08:00
parent 6fc0273b5a
commit 8fb4c41f35
21 changed files with 109 additions and 105 deletions
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40
compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
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@ -15,8 +15,9 @@ use rustc_middle::hir::nested_filter::OnlyBodies;
use rustc_middle::mir::tcx::PlaceTy;
use rustc_middle::mir::{
self, AggregateKind, BindingForm, BorrowKind, CallSource, ClearCrossCrate, ConstraintCategory,
FakeReadCause, LocalDecl, LocalInfo, LocalKind, Location, Operand, Place, PlaceRef,
ProjectionElem, Rvalue, Statement, StatementKind, Terminator, TerminatorKind, VarBindingForm,
FakeReadCause, LocalDecl, LocalInfo, LocalKind, Location, MutBorrowKind, Operand, Place,
PlaceRef, ProjectionElem, Rvalue, Statement, StatementKind, Terminator, TerminatorKind,
VarBindingForm,
};
use rustc_middle::ty::{self, suggest_constraining_type_params, PredicateKind, Ty};
use rustc_middle::util::CallKind;
@ -926,7 +927,10 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
// FIXME: supply non-"" `opt_via` when appropriate
let first_borrow_desc;
let mut err = match (gen_borrow_kind, issued_borrow.kind) {
(BorrowKind::Shared, BorrowKind::Mut { .. }) => {
(
BorrowKind::Shared,
BorrowKind::Mut { kind: MutBorrowKind::Default | MutBorrowKind::TwoPhaseBorrow },
) => {
first_borrow_desc = "mutable ";
self.cannot_reborrow_already_borrowed(
span,
@ -940,7 +944,10 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
None,
)
}
(BorrowKind::Mut { .. }, BorrowKind::Shared) => {
(
BorrowKind::Mut { kind: MutBorrowKind::Default | MutBorrowKind::TwoPhaseBorrow },
BorrowKind::Shared,
) => {
first_borrow_desc = "immutable ";
let mut err = self.cannot_reborrow_already_borrowed(
span,
@ -962,7 +969,10 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
err
}
(BorrowKind::Mut { .. }, BorrowKind::Mut { .. }) => {
(
BorrowKind::Mut { kind: MutBorrowKind::Default | MutBorrowKind::TwoPhaseBorrow },
BorrowKind::Mut { kind: MutBorrowKind::Default | MutBorrowKind::TwoPhaseBorrow },
) => {
first_borrow_desc = "first ";
let mut err = self.cannot_mutably_borrow_multiply(
span,
@ -985,12 +995,15 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
err
}
(BorrowKind::Unique, BorrowKind::Unique) => {
(
BorrowKind::Mut { kind: MutBorrowKind::ClosureCapture },
BorrowKind::Mut { kind: MutBorrowKind::ClosureCapture },
) => {
first_borrow_desc = "first ";
self.cannot_uniquely_borrow_by_two_closures(span, &desc_place, issued_span, None)
}
(BorrowKind::Mut { .. } | BorrowKind::Unique, BorrowKind::Shallow) => {
(BorrowKind::Mut { .. }, BorrowKind::Shallow) => {
if let Some(immutable_section_description) =
self.classify_immutable_section(issued_borrow.assigned_place)
{
@ -1004,7 +1017,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
borrow_spans.var_subdiag(
None,
&mut err,
Some(BorrowKind::Unique),
Some(BorrowKind::Mut { kind: MutBorrowKind::ClosureCapture }),
|kind, var_span| {
use crate::session_diagnostics::CaptureVarCause::*;
match kind {
@ -1038,7 +1051,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
}
}
(BorrowKind::Unique, _) => {
(BorrowKind::Mut { kind: MutBorrowKind::ClosureCapture }, _) => {
first_borrow_desc = "first ";
self.cannot_uniquely_borrow_by_one_closure(
span,
@ -1052,7 +1065,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
)
}
(BorrowKind::Shared, BorrowKind::Unique) => {
(BorrowKind::Shared, BorrowKind::Mut { kind: MutBorrowKind::ClosureCapture }) => {
first_borrow_desc = "first ";
self.cannot_reborrow_already_uniquely_borrowed(
span,
@ -1067,7 +1080,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
)
}
(BorrowKind::Mut { .. }, BorrowKind::Unique) => {
(BorrowKind::Mut { .. }, BorrowKind::Mut { kind: MutBorrowKind::ClosureCapture }) => {
first_borrow_desc = "first ";
self.cannot_reborrow_already_uniquely_borrowed(
span,
@ -1085,10 +1098,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
(BorrowKind::Shared, BorrowKind::Shared | BorrowKind::Shallow)
| (
BorrowKind::Shallow,
BorrowKind::Mut { .. }
| BorrowKind::Unique
| BorrowKind::Shared
| BorrowKind::Shallow,
BorrowKind::Mut { .. } | BorrowKind::Shared | BorrowKind::Shallow,
) => unreachable!(),
};