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Auto merge of rust-lang#127898 - matthiaskrgr:rollup-lkkpoui, r=matth…
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…iaskrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#127077 (Make language around `ToOwned` for `BorrowedFd` more precise)
 - rust-lang#127783 (Put the dots back in RTN pretty printing)
 - rust-lang#127787 (Migrate `atomic-lock-free` to `rmake`)
 - rust-lang#127810 (Rename `tcx` to `cx` in `rustc_type_ir`)
 - rust-lang#127878 (Fix associated item removal suggestion)
 - rust-lang#127886 (Accurate `use` rename suggestion span)
 - rust-lang#127888 (More accurate span for type parameter suggestion)
 - rust-lang#127889 (More accurate span for anonymous argument suggestion)

r? `@ghost`
`@rustbot` modify labels: rollup
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bors committed Jul 18, 2024
2 parents 4bb2f27 + 77e5bbf commit 52f3c71
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Showing 80 changed files with 550 additions and 383 deletions.
8 changes: 4 additions & 4 deletions compiler/rustc_borrowck/src/type_check/relate_tys.rs
Original file line number Diff line number Diff line change
Expand Up @@ -309,7 +309,7 @@ impl<'me, 'bccx, 'tcx> NllTypeRelating<'me, 'bccx, 'tcx> {
}

impl<'bccx, 'tcx> TypeRelation<TyCtxt<'tcx>> for NllTypeRelating<'_, 'bccx, 'tcx> {
fn tcx(&self) -> TyCtxt<'tcx> {
fn cx(&self) -> TyCtxt<'tcx> {
self.type_checker.infcx.tcx
}

Expand Down Expand Up @@ -370,7 +370,7 @@ impl<'bccx, 'tcx> TypeRelation<TyCtxt<'tcx>> for NllTypeRelating<'_, 'bccx, 'tcx
// shouldn't ever fail. Instead, it unconditionally emits an
// alias-relate goal.
assert!(!self.type_checker.infcx.next_trait_solver());
self.tcx().dcx().span_delayed_bug(
self.cx().dcx().span_delayed_bug(
self.span(),
"failure to relate an opaque to itself should result in an error later on",
);
Expand Down Expand Up @@ -540,7 +540,7 @@ impl<'bccx, 'tcx> PredicateEmittingRelation<InferCtxt<'tcx>> for NllTypeRelating
&mut self,
obligations: impl IntoIterator<Item: ty::Upcast<TyCtxt<'tcx>, ty::Predicate<'tcx>>>,
) {
let tcx = self.tcx();
let tcx = self.cx();
let param_env = self.param_env();
self.register_goals(
obligations.into_iter().map(|to_pred| Goal::new(tcx, param_env, to_pred)),
Expand All @@ -559,7 +559,7 @@ impl<'bccx, 'tcx> PredicateEmittingRelation<InferCtxt<'tcx>> for NllTypeRelating
.into_iter()
.map(|goal| {
Obligation::new(
self.tcx(),
self.cx(),
ObligationCause::dummy_with_span(self.span()),
goal.param_env,
goal.predicate,
Expand Down
22 changes: 11 additions & 11 deletions compiler/rustc_hir_analysis/src/hir_ty_lowering/errors.rs
Original file line number Diff line number Diff line change
Expand Up @@ -1257,14 +1257,12 @@ pub fn prohibit_assoc_item_constraint(
};

// Now emit the suggestion
if let Ok(suggestion) = tcx.sess.source_map().span_to_snippet(removal_span) {
e.span_suggestion_verbose(
removal_span,
format!("consider removing this associated item {}", constraint.kind.descr()),
suggestion,
Applicability::MaybeIncorrect,
);
}
e.span_suggestion_verbose(
removal_span,
format!("consider removing this associated item {}", constraint.kind.descr()),
"",
Applicability::MaybeIncorrect,
);
};

// Suggest replacing the associated item binding with a generic argument.
Expand Down Expand Up @@ -1340,11 +1338,13 @@ pub fn prohibit_assoc_item_constraint(
format!("<{lifetimes}{type_with_constraints}>"),
)
};
let suggestions =
vec![param_decl, (constraint.span, format!("{}", matching_param.name))];
let suggestions = vec![
param_decl,
(constraint.span.with_lo(constraint.ident.span.hi()), String::new()),
];

err.multipart_suggestion_verbose(
format!("declare the type parameter right after the `impl` keyword"),
"declare the type parameter right after the `impl` keyword",
suggestions,
Applicability::MaybeIncorrect,
);
Expand Down
2 changes: 1 addition & 1 deletion compiler/rustc_infer/src/error_reporting/infer/mod.rs
Original file line number Diff line number Diff line change
Expand Up @@ -1930,7 +1930,7 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
struct SameTypeModuloInfer<'a, 'tcx>(&'a InferCtxt<'tcx>);

impl<'tcx> TypeRelation<TyCtxt<'tcx>> for SameTypeModuloInfer<'_, 'tcx> {
fn tcx(&self) -> TyCtxt<'tcx> {
fn cx(&self) -> TyCtxt<'tcx> {
self.0.tcx
}

Expand Down
2 changes: 1 addition & 1 deletion compiler/rustc_infer/src/infer/outlives/test_type_match.rs
Original file line number Diff line number Diff line change
Expand Up @@ -137,7 +137,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for MatchAgainstHigherRankedOutlives<'tcx>
"MatchAgainstHigherRankedOutlives"
}

fn tcx(&self) -> TyCtxt<'tcx> {
fn cx(&self) -> TyCtxt<'tcx> {
self.tcx
}

Expand Down
12 changes: 6 additions & 6 deletions compiler/rustc_infer/src/infer/relate/generalize.rs
Original file line number Diff line number Diff line change
Expand Up @@ -372,7 +372,7 @@ impl<'tcx> Generalizer<'_, 'tcx> {

let is_nested_alias = mem::replace(&mut self.in_alias, true);
let result = match self.relate(alias, alias) {
Ok(alias) => Ok(alias.to_ty(self.tcx())),
Ok(alias) => Ok(alias.to_ty(self.cx())),
Err(e) => {
if is_nested_alias {
return Err(e);
Expand All @@ -397,7 +397,7 @@ impl<'tcx> Generalizer<'_, 'tcx> {
}

impl<'tcx> TypeRelation<TyCtxt<'tcx>> for Generalizer<'_, 'tcx> {
fn tcx(&self) -> TyCtxt<'tcx> {
fn cx(&self) -> TyCtxt<'tcx> {
self.infcx.tcx
}

Expand All @@ -417,7 +417,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for Generalizer<'_, 'tcx> {
// (e.g., #41849).
relate::relate_args_invariantly(self, a_arg, b_arg)
} else {
let tcx = self.tcx();
let tcx = self.cx();
let opt_variances = tcx.variances_of(item_def_id);
relate::relate_args_with_variances(
self,
Expand Down Expand Up @@ -525,7 +525,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for Generalizer<'_, 'tcx> {
}

debug!("replacing original vid={:?} with new={:?}", vid, new_var_id);
Ok(Ty::new_var(self.tcx(), new_var_id))
Ok(Ty::new_var(self.cx(), new_var_id))
}
}
}
Expand Down Expand Up @@ -654,7 +654,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for Generalizer<'_, 'tcx> {
{
variable_table.union(vid, new_var_id);
}
Ok(ty::Const::new_var(self.tcx(), new_var_id))
Ok(ty::Const::new_var(self.cx(), new_var_id))
}
}
}
Expand All @@ -672,7 +672,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for Generalizer<'_, 'tcx> {
args,
args,
)?;
Ok(ty::Const::new_unevaluated(self.tcx(), ty::UnevaluatedConst { def, args }))
Ok(ty::Const::new_unevaluated(self.cx(), ty::UnevaluatedConst { def, args }))
}
ty::ConstKind::Placeholder(placeholder) => {
if self.for_universe.can_name(placeholder.universe) {
Expand Down
4 changes: 2 additions & 2 deletions compiler/rustc_infer/src/infer/relate/glb.rs
Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for Glb<'_, '_, 'tcx> {
"Glb"
}

fn tcx(&self) -> TyCtxt<'tcx> {
fn cx(&self) -> TyCtxt<'tcx> {
self.fields.tcx()
}

Expand Down Expand Up @@ -61,7 +61,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for Glb<'_, '_, 'tcx> {
let origin = SubregionOrigin::Subtype(Box::new(self.fields.trace.clone()));
// GLB(&'static u8, &'a u8) == &RegionLUB('static, 'a) u8 == &'static u8
Ok(self.fields.infcx.inner.borrow_mut().unwrap_region_constraints().lub_regions(
self.tcx(),
self.cx(),
origin,
a,
b,
Expand Down
4 changes: 2 additions & 2 deletions compiler/rustc_infer/src/infer/relate/lub.rs
Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for Lub<'_, '_, 'tcx> {
"Lub"
}

fn tcx(&self) -> TyCtxt<'tcx> {
fn cx(&self) -> TyCtxt<'tcx> {
self.fields.tcx()
}

Expand Down Expand Up @@ -61,7 +61,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for Lub<'_, '_, 'tcx> {
let origin = SubregionOrigin::Subtype(Box::new(self.fields.trace.clone()));
// LUB(&'static u8, &'a u8) == &RegionGLB('static, 'a) u8 == &'a u8
Ok(self.fields.infcx.inner.borrow_mut().unwrap_region_constraints().glb_regions(
self.tcx(),
self.cx(),
origin,
a,
b,
Expand Down
10 changes: 5 additions & 5 deletions compiler/rustc_infer/src/infer/relate/type_relating.rs
Original file line number Diff line number Diff line change
Expand Up @@ -32,7 +32,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for TypeRelating<'_, '_, 'tcx> {
"TypeRelating"
}

fn tcx(&self) -> TyCtxt<'tcx> {
fn cx(&self) -> TyCtxt<'tcx> {
self.fields.infcx.tcx
}

Expand All @@ -48,7 +48,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for TypeRelating<'_, '_, 'tcx> {
// (e.g., #41849).
relate_args_invariantly(self, a_arg, b_arg)
} else {
let tcx = self.tcx();
let tcx = self.cx();
let opt_variances = tcx.variances_of(item_def_id);
relate_args_with_variances(self, item_def_id, opt_variances, a_arg, b_arg, false)
}
Expand Down Expand Up @@ -88,7 +88,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for TypeRelating<'_, '_, 'tcx> {
// can't make progress on `A <: B` if both A and B are
// type variables, so record an obligation.
self.fields.goals.push(Goal::new(
self.tcx(),
self.cx(),
self.fields.param_env,
ty::Binder::dummy(ty::PredicateKind::Subtype(ty::SubtypePredicate {
a_is_expected: true,
Expand All @@ -101,7 +101,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for TypeRelating<'_, '_, 'tcx> {
// can't make progress on `B <: A` if both A and B are
// type variables, so record an obligation.
self.fields.goals.push(Goal::new(
self.tcx(),
self.cx(),
self.fields.param_env,
ty::Binder::dummy(ty::PredicateKind::Subtype(ty::SubtypePredicate {
a_is_expected: false,
Expand Down Expand Up @@ -134,7 +134,7 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for TypeRelating<'_, '_, 'tcx> {

(&ty::Error(e), _) | (_, &ty::Error(e)) => {
infcx.set_tainted_by_errors(e);
return Ok(Ty::new_error(self.tcx(), e));
return Ok(Ty::new_error(self.cx(), e));
}

(
Expand Down
2 changes: 1 addition & 1 deletion compiler/rustc_macros/src/lift.rs
Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,7 @@ pub fn lift_derive(mut s: synstructure::Structure<'_>) -> proc_macro2::TokenStre
quote! {
type Lifted = #lifted;

fn lift_to_tcx(self, __tcx: ::rustc_middle::ty::TyCtxt<'__lifted>) -> Option<#lifted> {
fn lift_to_interner(self, __tcx: ::rustc_middle::ty::TyCtxt<'__lifted>) -> Option<#lifted> {
Some(match self { #body })
}
},
Expand Down
2 changes: 1 addition & 1 deletion compiler/rustc_middle/src/macros.rs
Original file line number Diff line number Diff line change
Expand Up @@ -59,7 +59,7 @@ macro_rules! TrivialLiftImpls {
$(
impl<'tcx> $crate::ty::Lift<$crate::ty::TyCtxt<'tcx>> for $ty {
type Lifted = Self;
fn lift_to_tcx(self, _: $crate::ty::TyCtxt<'tcx>) -> Option<Self> {
fn lift_to_interner(self, _: $crate::ty::TyCtxt<'tcx>) -> Option<Self> {
Some(self)
}
}
Expand Down
8 changes: 4 additions & 4 deletions compiler/rustc_middle/src/ty/context.rs
Original file line number Diff line number Diff line change
Expand Up @@ -1484,7 +1484,7 @@ impl<'tcx> TyCtxt<'tcx> {
}

pub fn lift<T: Lift<TyCtxt<'tcx>>>(self, value: T) -> Option<T::Lifted> {
value.lift_to_tcx(self)
value.lift_to_interner(self)
}

/// Creates a type context. To use the context call `fn enter` which
Expand Down Expand Up @@ -2087,7 +2087,7 @@ macro_rules! nop_lift {
($set:ident; $ty:ty => $lifted:ty) => {
impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for $ty {
type Lifted = $lifted;
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
// Assert that the set has the right type.
// Given an argument that has an interned type, the return type has the type of
// the corresponding interner set. This won't actually return anything, we're
Expand Down Expand Up @@ -2122,7 +2122,7 @@ macro_rules! nop_list_lift {
($set:ident; $ty:ty => $lifted:ty) => {
impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for &'a List<$ty> {
type Lifted = &'tcx List<$lifted>;
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
// Assert that the set has the right type.
if false {
let _x: &InternedSet<'tcx, List<$lifted>> = &tcx.interners.$set;
Expand Down Expand Up @@ -2160,7 +2160,7 @@ macro_rules! nop_slice_lift {
($ty:ty => $lifted:ty) => {
impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for &'a [$ty] {
type Lifted = &'tcx [$lifted];
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
if self.is_empty() {
return Some(&[]);
}
Expand Down
2 changes: 1 addition & 1 deletion compiler/rustc_middle/src/ty/generic_args.rs
Original file line number Diff line number Diff line change
Expand Up @@ -308,7 +308,7 @@ impl<'tcx> GenericArg<'tcx> {
impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for GenericArg<'a> {
type Lifted = GenericArg<'tcx>;

fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
match self.unpack() {
GenericArgKind::Lifetime(lt) => tcx.lift(lt).map(|lt| lt.into()),
GenericArgKind::Type(ty) => tcx.lift(ty).map(|ty| ty.into()),
Expand Down
7 changes: 5 additions & 2 deletions compiler/rustc_middle/src/ty/print/pretty.rs
Original file line number Diff line number Diff line change
Expand Up @@ -1214,11 +1214,14 @@ pub trait PrettyPrinter<'tcx>: Printer<'tcx> + fmt::Write {
&& let ty::Alias(_, alias_ty) =
self.tcx().fn_sig(fn_def_id).skip_binder().output().skip_binder().kind()
&& alias_ty.def_id == def_id
&& let generics = self.tcx().generics_of(fn_def_id)
// FIXME(return_type_notation): We only support lifetime params for now.
&& generics.own_params.iter().all(|param| matches!(param.kind, ty::GenericParamDefKind::Lifetime))
{
let num_args = self.tcx().generics_of(fn_def_id).count();
let num_args = generics.count();
write!(self, " {{ ")?;
self.print_def_path(fn_def_id, &args[..num_args])?;
write!(self, "() }}")?;
write!(self, "(..) }}")?;
}

Ok(())
Expand Down
4 changes: 2 additions & 2 deletions compiler/rustc_middle/src/ty/relate.rs
Original file line number Diff line number Diff line change
Expand Up @@ -69,7 +69,7 @@ impl<'tcx> Relate<TyCtxt<'tcx>> for ty::Pattern<'tcx> {
if inc_a != inc_b {
todo!()
}
Ok(relation.tcx().mk_pat(ty::PatternKind::Range { start, end, include_end: inc_a }))
Ok(relation.cx().mk_pat(ty::PatternKind::Range { start, end, include_end: inc_a }))
}
}
}
Expand All @@ -81,7 +81,7 @@ impl<'tcx> Relate<TyCtxt<'tcx>> for &'tcx ty::List<ty::PolyExistentialPredicate<
a: Self,
b: Self,
) -> RelateResult<'tcx, Self> {
let tcx = relation.tcx();
let tcx = relation.cx();

// FIXME: this is wasteful, but want to do a perf run to see how slow it is.
// We need to perform this deduplication as we sometimes generate duplicate projections
Expand Down
4 changes: 2 additions & 2 deletions compiler/rustc_middle/src/ty/structural_impls.rs
Original file line number Diff line number Diff line change
Expand Up @@ -283,7 +283,7 @@ TrivialTypeTraversalAndLiftImpls! {

impl<'tcx, T: Lift<TyCtxt<'tcx>>> Lift<TyCtxt<'tcx>> for Option<T> {
type Lifted = Option<T::Lifted>;
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
Some(match self {
Some(x) => Some(tcx.lift(x)?),
None => None,
Expand All @@ -293,7 +293,7 @@ impl<'tcx, T: Lift<TyCtxt<'tcx>>> Lift<TyCtxt<'tcx>> for Option<T> {

impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for Term<'a> {
type Lifted = ty::Term<'tcx>;
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
match self.unpack() {
TermKind::Ty(ty) => tcx.lift(ty).map(Into::into),
TermKind::Const(c) => tcx.lift(c).map(Into::into),
Expand Down
12 changes: 6 additions & 6 deletions compiler/rustc_parse/src/parser/diagnostics.rs
Original file line number Diff line number Diff line change
Expand Up @@ -2240,11 +2240,11 @@ impl<'a> Parser<'a> {
}
_ => {
// Otherwise, try to get a type and emit a suggestion.
if let Some(ty) = pat.to_ty() {
if let Some(_) = pat.to_ty() {
err.span_suggestion_verbose(
pat.span,
pat.span.shrink_to_lo(),
"explicitly ignore the parameter name",
format!("_: {}", pprust::ty_to_string(&ty)),
"_: ".to_string(),
Applicability::MachineApplicable,
);
err.note(rfc_note);
Expand All @@ -2256,7 +2256,7 @@ impl<'a> Parser<'a> {

// `fn foo(a, b) {}`, `fn foo(a<x>, b<y>) {}` or `fn foo(usize, usize) {}`
if first_param {
err.span_suggestion(
err.span_suggestion_verbose(
self_span,
"if this is a `self` type, give it a parameter name",
self_sugg,
Expand All @@ -2266,14 +2266,14 @@ impl<'a> Parser<'a> {
// Avoid suggesting that `fn foo(HashMap<u32>)` is fixed with a change to
// `fn foo(HashMap: TypeName<u32>)`.
if self.token != token::Lt {
err.span_suggestion(
err.span_suggestion_verbose(
param_span,
"if this is a parameter name, give it a type",
param_sugg,
Applicability::HasPlaceholders,
);
}
err.span_suggestion(
err.span_suggestion_verbose(
type_span,
"if this is a type, explicitly ignore the parameter name",
type_sugg,
Expand Down
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