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Merge hir::Mutability into ast::Mutability.

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This commit is contained in:
Camille GILLOT 2019-11-09 17:44:11 +01:00
parent 57a5f92bef
commit ed640c6a27
65 changed files with 218 additions and 233 deletions
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11
src/librustc/hir/lowering.rs
View file

@ -2077,13 +2077,6 @@ impl<'a> LoweringContext<'a> {
}, ids)
}
fn lower_mutability(&mut self, m: Mutability) -> hir::Mutability {
match m {
Mutability::Mutable => hir::MutMutable,
Mutability::Immutable => hir::MutImmutable,
}
}
fn lower_fn_params_to_names(&mut self, decl: &FnDecl) -> hir::HirVec<Ident> {
// Skip the `...` (`CVarArgs`) trailing arguments from the AST,
// as they are not explicit in HIR/Ty function signatures.
@ -2653,7 +2646,7 @@ impl<'a> LoweringContext<'a> {
fn lower_mt(&mut self, mt: &MutTy, itctx: ImplTraitContext<'_>) -> hir::MutTy {
hir::MutTy {
ty: self.lower_ty(&mt.ty, itctx),
mutbl: self.lower_mutability(mt.mutbl),
mutbl: mt.mutbl,
}
}
@ -2754,7 +2747,7 @@ impl<'a> LoweringContext<'a> {
}
PatKind::Box(ref inner) => hir::PatKind::Box(self.lower_pat(inner)),
PatKind::Ref(ref inner, mutbl) => {
hir::PatKind::Ref(self.lower_pat(inner), self.lower_mutability(mutbl))
hir::PatKind::Ref(self.lower_pat(inner), mutbl)
}
PatKind::Range(ref e1, ref e2, Spanned { node: ref end, .. }) => hir::PatKind::Range(
P(self.lower_expr(e1)),

3
src/librustc/hir/lowering/expr.rs
View file

@ -64,7 +64,6 @@ impl LoweringContext<'_> {
hir::ExprKind::Type(expr, self.lower_ty(ty, ImplTraitContext::disallowed()))
}
ExprKind::AddrOf(m, ref ohs) => {
let m = self.lower_mutability(m);
let ohs = P(self.lower_expr(ohs));
hir::ExprKind::AddrOf(m, ohs)
}
@ -1350,7 +1349,7 @@ impl LoweringContext<'_> {
}
fn expr_mut_addr_of(&mut self, span: Span, e: P<hir::Expr>) -> hir::Expr {
self.expr(span, hir::ExprKind::AddrOf(hir::MutMutable, e), ThinVec::new())
self.expr(span, hir::ExprKind::AddrOf(hir::Mutability::Mutable, e), ThinVec::new())
}
fn expr_unit(&mut self, sp: Span) -> hir::Expr {

4
src/librustc/hir/lowering/item.rs
View file

@ -289,7 +289,7 @@ impl LoweringContext<'_> {
ImplTraitContext::Disallowed(ImplTraitPosition::Binding)
}
),
self.lower_mutability(m),
m,
self.lower_const_body(e),
)
}
@ -719,7 +719,7 @@ impl LoweringContext<'_> {
}
ForeignItemKind::Static(ref t, m) => {
hir::ForeignItemKind::Static(
self.lower_ty(t, ImplTraitContext::disallowed()), self.lower_mutability(m))
self.lower_ty(t, ImplTraitContext::disallowed()), m)
}
ForeignItemKind::Ty => hir::ForeignItemKind::Type,
ForeignItemKind::Macro(_) => panic!("macro shouldn't exist here"),

33
src/librustc/hir/mod.rs
View file

@ -5,7 +5,6 @@
pub use self::BlockCheckMode::*;
pub use self::CaptureClause::*;
pub use self::FunctionRetTy::*;
pub use self::Mutability::*;
pub use self::PrimTy::*;
pub use self::UnOp::*;
pub use self::UnsafeSource::*;
@ -23,6 +22,7 @@ use syntax_pos::{Span, DUMMY_SP, MultiSpan};
use syntax::source_map::Spanned;
use syntax::ast::{self, CrateSugar, Ident, Name, NodeId, AsmDialect};
use syntax::ast::{Attribute, Label, LitKind, StrStyle, FloatTy, IntTy, UintTy};
pub use syntax::ast::Mutability;
use syntax::attr::{InlineAttr, OptimizeAttr};
use syntax::symbol::{Symbol, kw};
use syntax::tokenstream::TokenStream;
@ -1053,37 +1053,6 @@ pub enum PatKind {
Slice(HirVec<P<Pat>>, Option<P<Pat>>, HirVec<P<Pat>>),
}
#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, HashStable,
RustcEncodable, RustcDecodable, Hash, Debug)]
pub enum Mutability {
MutMutable,
MutImmutable,
}
impl Mutability {
/// Returns `MutMutable` only if both `self` and `other` are mutable.
pub fn and(self, other: Self) -> Self {
match self {
MutMutable => other,
MutImmutable => MutImmutable,
}
}
pub fn invert(self) -> Self {
match self {
MutMutable => MutImmutable,
MutImmutable => MutMutable,
}
}
pub fn prefix_str(&self) -> &'static str {
match self {
MutMutable => "mut ",
MutImmutable => "",
}
}
}
#[derive(Copy, Clone, PartialEq, RustcEncodable, RustcDecodable, Debug, HashStable)]
pub enum BinOpKind {
/// The `+` operator (addition).

4
src/librustc/hir/pat_util.rs
View file

@ -169,10 +169,10 @@ impl hir::Pat {
self.each_binding(|annotation, _, _, _| {
match annotation {
hir::BindingAnnotation::Ref => match result {
None | Some(hir::MutImmutable) => result = Some(hir::MutImmutable),
None | Some(hir::Mutability::Immutable) => result = Some(hir::Mutability::Immutable),
_ => {}
}
hir::BindingAnnotation::RefMut => result = Some(hir::MutMutable),
hir::BindingAnnotation::RefMut => result = Some(hir::Mutability::Mutable),
_ => {}
}
});

16
src/librustc/hir/print.rs
View file

@ -295,8 +295,8 @@ impl<'a> State<'a> {
hir::TyKind::Ptr(ref mt) => {
self.s.word("*");
match mt.mutbl {
hir::MutMutable => self.word_nbsp("mut"),
hir::MutImmutable => self.word_nbsp("const"),
hir::Mutability::Mutable => self.word_nbsp("mut"),
hir::Mutability::Immutable => self.word_nbsp("const"),
}
self.print_type(&mt.ty);
}
@ -390,7 +390,7 @@ impl<'a> State<'a> {
}
hir::ForeignItemKind::Static(ref t, m) => {
self.head(visibility_qualified(&item.vis, "static"));
if m == hir::MutMutable {
if m == hir::Mutability::Mutable {
self.word_space("mut");
}
self.print_ident(item.ident);
@ -506,7 +506,7 @@ impl<'a> State<'a> {
}
hir::ItemKind::Static(ref ty, m, expr) => {
self.head(visibility_qualified(&item.vis, "static"));
if m == hir::MutMutable {
if m == hir::Mutability::Mutable {
self.word_space("mut");
}
self.print_ident(item.ident);
@ -1628,11 +1628,11 @@ impl<'a> State<'a> {
match binding_mode {
hir::BindingAnnotation::Ref => {
self.word_nbsp("ref");
self.print_mutability(hir::MutImmutable);
self.print_mutability(hir::Mutability::Immutable);
}
hir::BindingAnnotation::RefMut => {
self.word_nbsp("ref");
self.print_mutability(hir::MutMutable);
self.print_mutability(hir::Mutability::Mutable);
}
hir::BindingAnnotation::Unannotated => {}
hir::BindingAnnotation::Mutable => {
@ -2061,8 +2061,8 @@ impl<'a> State<'a> {
pub fn print_mutability(&mut self, mutbl: hir::Mutability) {
match mutbl {
hir::MutMutable => self.word_nbsp("mut"),
hir::MutImmutable => {},
hir::Mutability::Mutable => self.word_nbsp("mut"),
hir::Mutability::Immutable => {},
}
}

2
src/librustc/lint/internal.rs
View file

@ -131,7 +131,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for TyTyKind {
}
}
}
TyKind::Rptr(_, MutTy { ty: inner_ty, mutbl: Mutability::MutImmutable }) => {
TyKind::Rptr(_, MutTy { ty: inner_ty, mutbl: Mutability::Immutable }) => {
if let Some(impl_did) = cx.tcx.impl_of_method(ty.hir_id.owner_def_id()) {
if cx.tcx.impl_trait_ref(impl_did).is_some() {
return;

12
src/librustc/middle/mem_categorization.rs
View file

@ -67,7 +67,7 @@ use crate::ty::adjustment;
use crate::ty::{self, DefIdTree, Ty, TyCtxt};
use crate::ty::fold::TypeFoldable;
use crate::hir::{MutImmutable, MutMutable, PatKind};
use crate::hir::{Mutability, PatKind};
use crate::hir::pat_util::EnumerateAndAdjustIterator;
use crate::hir;
use syntax::ast::{self, Name};
@ -226,8 +226,8 @@ pub type McResult<T> = Result<T, ()>;
impl MutabilityCategory {
pub fn from_mutbl(m: hir::Mutability) -> MutabilityCategory {
let ret = match m {
MutImmutable => McImmutable,
MutMutable => McDeclared
Mutability::Immutable => McImmutable,
Mutability::Mutable => McDeclared
};
debug!("MutabilityCategory::{}({:?}) => {:?}",
"from_mutbl", m, ret);
@ -274,7 +274,7 @@ impl MutabilityCategory {
let bm = *tables.pat_binding_modes()
.get(p.hir_id)
.expect("missing binding mode");
if bm == ty::BindByValue(hir::MutMutable) {
if bm == ty::BindByValue(Mutability::Mutable) {
McDeclared
} else {
McImmutable
@ -663,8 +663,8 @@ impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx> {
span,
cat,
mutbl: match self.tcx.static_mutability(def_id).unwrap() {
hir::MutImmutable => McImmutable,
hir::MutMutable => McDeclared,
Mutability::Immutable => McImmutable,
Mutability::Mutable => McDeclared,
},
ty:expr_ty,
note: NoteNone

4
src/librustc/mir/mod.rs
View file

@ -491,8 +491,8 @@ pub enum Mutability {
impl From<Mutability> for hir::Mutability {
fn from(m: Mutability) -> Self {
match m {
Mutability::Mut => hir::MutMutable,
Mutability::Not => hir::MutImmutable,
Mutability::Mut => hir::Mutability::Mutable,
Mutability::Not => hir::Mutability::Immutable,
}
}
}

8
src/librustc/mir/tcx.rs
View file

@ -276,17 +276,17 @@ impl<'tcx> BinOp {
impl BorrowKind {
pub fn to_mutbl_lossy(self) -> hir::Mutability {
match self {
BorrowKind::Mut { .. } => hir::MutMutable,
BorrowKind::Shared => hir::MutImmutable,
BorrowKind::Mut { .. } => hir::Mutability::Mutable,
BorrowKind::Shared => hir::Mutability::Immutable,
// We have no type corresponding to a unique imm borrow, so
// use `&mut`. It gives all the capabilities of an `&uniq`
// and hence is a safe "over approximation".
BorrowKind::Unique => hir::MutMutable,
BorrowKind::Unique => hir::Mutability::Mutable,
// We have no type corresponding to a shallow borrow, so use
// `&` as an approximation.
BorrowKind::Shallow => hir::MutImmutable,
BorrowKind::Shallow => hir::Mutability::Immutable,
}
}
}

6
src/librustc/traits/error_reporting.rs
View file

@ -1385,8 +1385,8 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
if let ty::Ref(region, t_type, mutability) = trait_ref.skip_binder().self_ty().kind {
let trait_type = match mutability {
hir::Mutability::MutMutable => self.tcx.mk_imm_ref(region, t_type),
hir::Mutability::MutImmutable => self.tcx.mk_mut_ref(region, t_type),
hir::Mutability::Mutable => self.tcx.mk_imm_ref(region, t_type),
hir::Mutability::Immutable => self.tcx.mk_mut_ref(region, t_type),
};
let substs = self.tcx.mk_substs_trait(&trait_type, &[]);
@ -1403,7 +1403,7 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
let sp = self.tcx.sess.source_map()
.span_take_while(span, |c| c.is_whitespace() || *c == '&');
if points_at_arg &&
mutability == hir::Mutability::MutImmutable &&
mutability == hir::Mutability::Immutable &&
refs_number > 0
{
err.span_suggestion(

4
src/librustc/traits/select.rs
View file

@ -2652,7 +2652,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
| ty::Char
| ty::RawPtr(..)
| ty::Never
| ty::Ref(_, _, hir::MutImmutable) => {
| ty::Ref(_, _, hir::Mutability::Immutable) => {
// Implementations provided in libcore
None
}
@ -2663,7 +2663,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
| ty::Generator(..)
| ty::GeneratorWitness(..)
| ty::Foreign(..)
| ty::Ref(_, _, hir::MutMutable) => None,
| ty::Ref(_, _, hir::Mutability::Mutable) => None,
ty::Array(element_ty, _) => {
// (*) binder moved here

8
src/librustc/ty/adjustment.rs
View file

@ -109,8 +109,8 @@ pub struct OverloadedDeref<'tcx> {
impl<'tcx> OverloadedDeref<'tcx> {
pub fn method_call(&self, tcx: TyCtxt<'tcx>, source: Ty<'tcx>) -> (DefId, SubstsRef<'tcx>) {
let trait_def_id = match self.mutbl {
hir::MutImmutable => tcx.lang_items().deref_trait(),
hir::MutMutable => tcx.lang_items().deref_mut_trait()
hir::Mutability::Immutable => tcx.lang_items().deref_trait(),
hir::Mutability::Mutable => tcx.lang_items().deref_mut_trait()
};
let method_def_id = tcx.associated_items(trait_def_id.unwrap())
.find(|m| m.kind == ty::AssocKind::Method).unwrap().def_id;
@ -145,8 +145,8 @@ pub enum AutoBorrowMutability {
impl From<AutoBorrowMutability> for hir::Mutability {
fn from(m: AutoBorrowMutability) -> Self {
match m {
AutoBorrowMutability::Mutable { .. } => hir::MutMutable,
AutoBorrowMutability::Immutable => hir::MutImmutable,
AutoBorrowMutability::Mutable { .. } => hir::Mutability::Mutable,
AutoBorrowMutability::Immutable => hir::Mutability::Immutable,
}
}
}

8
src/librustc/ty/binding.rs
View file

@ -13,10 +13,10 @@ CloneTypeFoldableAndLiftImpls! { BindingMode, }
impl BindingMode {
pub fn convert(ba: BindingAnnotation) -> BindingMode {
match ba {
Unannotated => BindingMode::BindByValue(Mutability::MutImmutable),
Mutable => BindingMode::BindByValue(Mutability::MutMutable),
Ref => BindingMode::BindByReference(Mutability::MutImmutable),
RefMut => BindingMode::BindByReference(Mutability::MutMutable),
Unannotated => BindingMode::BindByValue(Mutability::Immutable),
Mutable => BindingMode::BindByValue(Mutability::Mutable),
Ref => BindingMode::BindByReference(Mutability::Immutable),
RefMut => BindingMode::BindByReference(Mutability::Mutable),
}
}
}

8
src/librustc/ty/context.rs
View file

@ -2410,22 +2410,22 @@ impl<'tcx> TyCtxt<'tcx> {
#[inline]
pub fn mk_mut_ref(self, r: Region<'tcx>, ty: Ty<'tcx>) -> Ty<'tcx> {
self.mk_ref(r, TypeAndMut {ty: ty, mutbl: hir::MutMutable})
self.mk_ref(r, TypeAndMut {ty: ty, mutbl: hir::Mutability::Mutable})
}
#[inline]
pub fn mk_imm_ref(self, r: Region<'tcx>, ty: Ty<'tcx>) -> Ty<'tcx> {
self.mk_ref(r, TypeAndMut {ty: ty, mutbl: hir::MutImmutable})
self.mk_ref(r, TypeAndMut {ty: ty, mutbl: hir::Mutability::Immutable})
}
#[inline]
pub fn mk_mut_ptr(self, ty: Ty<'tcx>) -> Ty<'tcx> {
self.mk_ptr(TypeAndMut {ty: ty, mutbl: hir::MutMutable})
self.mk_ptr(TypeAndMut {ty: ty, mutbl: hir::Mutability::Mutable})
}
#[inline]
pub fn mk_imm_ptr(self, ty: Ty<'tcx>) -> Ty<'tcx> {
self.mk_ptr(TypeAndMut {ty: ty, mutbl: hir::MutImmutable})
self.mk_ptr(TypeAndMut {ty: ty, mutbl: hir::Mutability::Immutable})
}
#[inline]

2
src/librustc/ty/error.rs
View file

@ -211,7 +211,7 @@ impl<'tcx> ty::TyS<'tcx> {
region.to_string() != "'_" //... or a complex type
{
format!("{}reference", match mutbl {
hir::Mutability::MutMutable => "mutable ",
hir::Mutability::Mutable => "mutable ",
_ => ""
}).into()
} else {

4
src/librustc/ty/layout.rs
View file

@ -2221,12 +2221,12 @@ where
let tcx = cx.tcx();
let is_freeze = ty.is_freeze(tcx, cx.param_env(), DUMMY_SP);
let kind = match mt {
hir::MutImmutable => if is_freeze {
hir::Mutability::Immutable => if is_freeze {
PointerKind::Frozen
} else {
PointerKind::Shared
},
hir::MutMutable => {
hir::Mutability::Mutable => {
// Previously we would only emit noalias annotations for LLVM >= 6 or in
// panic=abort mode. That was deemed right, as prior versions had many bugs
// in conjunction with unwinding, but later versions didn’t seem to have

10
src/librustc/ty/mod.rs
View file

@ -2693,8 +2693,8 @@ impl<'tcx> TyS<'tcx> {
impl BorrowKind {
pub fn from_mutbl(m: hir::Mutability) -> BorrowKind {
match m {
hir::MutMutable => MutBorrow,
hir::MutImmutable => ImmBorrow,
hir::Mutability::Mutable => MutBorrow,
hir::Mutability::Immutable => ImmBorrow,
}
}
@ -2704,13 +2704,13 @@ impl BorrowKind {
/// question.
pub fn to_mutbl_lossy(self) -> hir::Mutability {
match self {
MutBorrow => hir::MutMutable,
ImmBorrow => hir::MutImmutable,
MutBorrow => hir::Mutability::Mutable,
ImmBorrow => hir::Mutability::Immutable,
// We have no type corresponding to a unique imm borrow, so
// use `&mut`. It gives all the capabilities of an `&uniq`
// and hence is a safe "over approximation".
UniqueImmBorrow => hir::MutMutable,
UniqueImmBorrow => hir::Mutability::Mutable,
}
}

4
src/librustc/ty/print/obsolete.rs
View file

@ -60,8 +60,8 @@ impl DefPathBasedNames<'tcx> {
ty::RawPtr(ty::TypeAndMut { ty: inner_type, mutbl }) => {
output.push('*');
match mutbl {
hir::MutImmutable => output.push_str("const "),
hir::MutMutable => output.push_str("mut "),
hir::Mutability::Immutable => output.push_str("const "),
hir::Mutability::Mutable => output.push_str("mut "),
}
self.push_type_name(inner_type, output, debug);

4
src/librustc/ty/print/pretty.rs
View file

@ -471,8 +471,8 @@ pub trait PrettyPrinter<'tcx>:
ty::Float(t) => p!(write("{}", t.name_str())),
ty::RawPtr(ref tm) => {
p!(write("*{} ", match tm.mutbl {
hir::MutMutable => "mut",
hir::MutImmutable => "const",
hir::Mutability::Mutable => "mut",
hir::Mutability::Immutable => "const",
}));
p!(print(tm.ty))
}

4
src/librustc/ty/relate.rs
View file

@ -121,8 +121,8 @@ impl<'tcx> Relate<'tcx> for ty::TypeAndMut<'tcx> {
} else {
let mutbl = a.mutbl;
let variance = match mutbl {
ast::Mutability::MutImmutable => ty::Covariant,
ast::Mutability::MutMutable => ty::Invariant,
ast::Mutability::Immutable => ty::Covariant,
ast::Mutability::Mutable => ty::Invariant,
};
let ty = relation.relate_with_variance(variance, &a.ty, &b.ty)?;
Ok(ty::TypeAndMut { ty, mutbl })

6
src/librustc/ty/sty.rs
View file

@ -1839,8 +1839,8 @@ impl<'tcx> TyS<'tcx> {
#[inline]
pub fn is_mutable_ptr(&self) -> bool {
match self.kind {
RawPtr(TypeAndMut { mutbl: hir::Mutability::MutMutable, .. }) |
Ref(_, _, hir::Mutability::MutMutable) => true,
RawPtr(TypeAndMut { mutbl: hir::Mutability::Mutable, .. }) |
Ref(_, _, hir::Mutability::Mutable) => true,
_ => false
}
}
@ -2030,7 +2030,7 @@ impl<'tcx> TyS<'tcx> {
Adt(def, _) if def.is_box() => {
Some(TypeAndMut {
ty: self.boxed_ty(),
mutbl: hir::MutImmutable,
mutbl: hir::Mutability::Immutable,
})
},
Ref(_, ty, mutbl) => Some(TypeAndMut { ty, mutbl }),

4
src/librustc/ty/util.rs
View file

@ -184,7 +184,7 @@ impl<'tcx> ty::ParamEnv<'tcx> {
// Now libcore provides that impl.
ty::Uint(_) | ty::Int(_) | ty::Bool | ty::Float(_) |
ty::Char | ty::RawPtr(..) | ty::Never |
ty::Ref(_, _, hir::MutImmutable) => return Ok(()),
ty::Ref(_, _, hir::Mutability::Immutable) => return Ok(()),
ty::Adt(adt, substs) => (adt, substs),
@ -680,7 +680,7 @@ impl<'tcx> TyCtxt<'tcx> {
/// Returns `true` if the node pointed to by `def_id` is a mutable `static` item.
pub fn is_mutable_static(&self, def_id: DefId) -> bool {
self.static_mutability(def_id) == Some(hir::MutMutable)
self.static_mutability(def_id) == Some(hir::Mutability::Mutable)
}
/// Expands the given impl trait type, stopping if the type is recursive.

2
src/librustc_codegen_llvm/intrinsic.rs
View file

@ -1573,7 +1573,7 @@ fn generic_simd_intrinsic(
// The second argument must be a simd vector with an element type that's a pointer
// to the element type of the first argument
let (pointer_count, underlying_ty) = match arg_tys[1].simd_type(tcx).kind {
ty::RawPtr(p) if p.ty == in_elem && p.mutbl == hir::MutMutable
ty::RawPtr(p) if p.ty == in_elem && p.mutbl == hir::Mutability::Mutable
=> (ptr_count(arg_tys[1].simd_type(tcx)),
non_ptr(arg_tys[1].simd_type(tcx))),
_ => {

4
src/librustc_codegen_ssa/debuginfo/type_names.rs
View file

@ -62,8 +62,8 @@ pub fn push_debuginfo_type_name<'tcx>(
output.push('*');
}
match mutbl {
hir::MutImmutable => output.push_str("const "),
hir::MutMutable => output.push_str("mut "),
hir::Mutability::Immutable => output.push_str("const "),
hir::Mutability::Mutable => output.push_str("mut "),
}
push_debuginfo_type_name(tcx, inner_type, true, output, visited);

8
src/librustc_codegen_utils/symbol_names/v0.rs
View file

@ -373,8 +373,8 @@ impl Printer<'tcx> for SymbolMangler<'tcx> {
ty::Ref(r, ty, mutbl) => {
self.push(match mutbl {
hir::MutImmutable => "R",
hir::MutMutable => "Q",
hir::Mutability::Immutable => "R",
hir::Mutability::Mutable => "Q",
});
if *r != ty::ReErased {
self = r.print(self)?;
@ -384,8 +384,8 @@ impl Printer<'tcx> for SymbolMangler<'tcx> {
ty::RawPtr(mt) => {
self.push(match mt.mutbl {
hir::MutImmutable => "P",
hir::MutMutable => "O",
hir::Mutability::Immutable => "P",
hir::Mutability::Mutable => "O",
});
self = mt.ty.print(self)?;
}

4
src/librustc_lint/builtin.rs
View file

@ -926,8 +926,8 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for MutableTransmutes {
consider instead using an UnsafeCell";
match get_transmute_from_to(cx, expr).map(|(ty1, ty2)| (&ty1.kind, &ty2.kind)) {
Some((&ty::Ref(_, _, from_mt), &ty::Ref(_, _, to_mt))) => {
if to_mt == hir::Mutability::MutMutable &&
from_mt == hir::Mutability::MutImmutable {
if to_mt == hir::Mutability::Mutable &&
from_mt == hir::Mutability::Immutable {
cx.span_lint(MUTABLE_TRANSMUTES, expr.span, msg);
}
}

4
src/librustc_metadata/rmeta/decoder.rs
View file

@ -1236,9 +1236,9 @@ impl<'a, 'tcx> CrateMetadata {
fn static_mutability(&self, id: DefIndex) -> Option<hir::Mutability> {
match self.kind(id) {
EntryKind::ImmStatic |
EntryKind::ForeignImmStatic => Some(hir::MutImmutable),
EntryKind::ForeignImmStatic => Some(hir::Mutability::Immutable),
EntryKind::MutStatic |
EntryKind::ForeignMutStatic => Some(hir::MutMutable),
EntryKind::ForeignMutStatic => Some(hir::Mutability::Mutable),
_ => None,
}
}

8
src/librustc_metadata/rmeta/encoder.rs
View file

@ -1086,8 +1086,8 @@ impl EncodeContext<'tcx> {
debug!("EncodeContext::encode_info_for_item({:?})", def_id);
record!(self.per_def.kind[def_id] <- match item.kind {
hir::ItemKind::Static(_, hir::MutMutable, _) => EntryKind::MutStatic,
hir::ItemKind::Static(_, hir::MutImmutable, _) => EntryKind::ImmStatic,
hir::ItemKind::Static(_, hir::Mutability::Mutable, _) => EntryKind::MutStatic,
hir::ItemKind::Static(_, hir::Mutability::Immutable, _) => EntryKind::ImmStatic,
hir::ItemKind::Const(_, body_id) => {
let mir = self.tcx.at(item.span).mir_const_qualif(def_id);
EntryKind::Const(
@ -1571,8 +1571,8 @@ impl EncodeContext<'tcx> {
};
EntryKind::ForeignFn(self.lazy(data))
}
hir::ForeignItemKind::Static(_, hir::MutMutable) => EntryKind::ForeignMutStatic,
hir::ForeignItemKind::Static(_, hir::MutImmutable) => EntryKind::ForeignImmStatic,
hir::ForeignItemKind::Static(_, hir::Mutability::Mutable) => EntryKind::ForeignMutStatic,
hir::ForeignItemKind::Static(_, hir::Mutability::Immutable) => EntryKind::ForeignImmStatic,
hir::ForeignItemKind::Type => EntryKind::ForeignType,
});
record!(self.per_def.visibility[def_id] <-

10
src/librustc_mir/borrow_check/mod.rs
View file

@ -137,7 +137,7 @@ fn do_mir_borrowck<'a, 'tcx>(
};
let bm = *tables.pat_binding_modes().get(var_hir_id)
.expect("missing binding mode");
if bm == ty::BindByValue(hir::MutMutable) {
if bm == ty::BindByValue(hir::Mutability::Mutable) {
upvar.mutability = Mutability::Mut;
}
upvar
@ -2118,10 +2118,10 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
ty::Ref(_, _, mutbl) => {
match mutbl {
// Shared borrowed data is never mutable
hir::MutImmutable => Err(place),
hir::Mutability::Immutable => Err(place),
// Mutably borrowed data is mutable, but only if we have a
// unique path to the `&mut`
hir::MutMutable => {
hir::Mutability::Mutable => {
let mode = match self.is_upvar_field_projection(place) {
Some(field)
if self.upvars[field.index()].by_ref =>
@ -2141,10 +2141,10 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
ty::RawPtr(tnm) => {
match tnm.mutbl {
// `*const` raw pointers are not mutable
hir::MutImmutable => Err(place),
hir::Mutability::Immutable => Err(place),
// `*mut` raw pointers are always mutable, regardless of
// context. The users have to check by themselves.
hir::MutMutable => {
hir::Mutability::Mutable => {
Ok(RootPlace {
place_base: place.base,
place_projection: place.projection,

6
src/librustc_mir/borrow_check/mutability_errors.rs
View file

@ -271,7 +271,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
// we have an explicit self. Do the same thing in this case and check
// for a `self: &mut Self` to suggest removing the `&mut`.
if let ty::Ref(
_, _, hir::Mutability::MutMutable
_, _, hir::Mutability::Mutable
) = local_decl.ty.kind {
true
} else {
@ -593,7 +593,7 @@ fn suggest_ampmut<'tcx>(
}
let ty_mut = local_decl.ty.builtin_deref(true).unwrap();
assert_eq!(ty_mut.mutbl, hir::MutImmutable);
assert_eq!(ty_mut.mutbl, hir::Mutability::Immutable);
(highlight_span,
if local_decl.ty.is_region_ptr() {
format!("&mut {}", ty_mut.ty)
@ -629,7 +629,7 @@ fn annotate_struct_field(
// we can expect a field that is an immutable reference to a type.
if let hir::Node::Field(field) = node {
if let hir::TyKind::Rptr(lifetime, hir::MutTy {
mutbl: hir::Mutability::MutImmutable,
mutbl: hir::Mutability::Immutable,
ref ty
}) = field.ty.kind {
// Get the snippets in two parts - the named lifetime (if there is one) and

14
src/librustc_mir/borrow_check/nll/type_check/mod.rs
View file

@ -2138,7 +2138,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
let ty_from = match op.ty(body, tcx).kind {
ty::RawPtr(ty::TypeAndMut {
ty: ty_from,
mutbl: hir::MutMutable,
mutbl: hir::Mutability::Mutable,
}) => ty_from,
_ => {
span_mirbug!(
@ -2153,7 +2153,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
let ty_to = match ty.kind {
ty::RawPtr(ty::TypeAndMut {
ty: ty_to,
mutbl: hir::MutImmutable,
mutbl: hir::Mutability::Immutable,
}) => ty_to,
_ => {
span_mirbug!(
@ -2187,7 +2187,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
let opt_ty_elem = match ty_from.kind {
ty::RawPtr(
ty::TypeAndMut { mutbl: hir::MutImmutable, ty: array_ty }
ty::TypeAndMut { mutbl: hir::Mutability::Immutable, ty: array_ty }
) => {
match array_ty.kind {
ty::Array(ty_elem, _) => Some(ty_elem),
@ -2212,7 +2212,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
let ty_to = match ty.kind {
ty::RawPtr(
ty::TypeAndMut { mutbl: hir::MutImmutable, ty: ty_to }
ty::TypeAndMut { mutbl: hir::Mutability::Immutable, ty: ty_to }
) => {
ty_to
}
@ -2250,7 +2250,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
let cast_ty_to = CastTy::from_ty(ty);
match (cast_ty_from, cast_ty_to) {
(Some(CastTy::RPtr(ref_tm)), Some(CastTy::Ptr(ptr_tm))) => {
if let hir::MutMutable = ptr_tm.mutbl {
if let hir::Mutability::Mutable = ptr_tm.mutbl {
if let Err(terr) = self.eq_types(
ref_tm.ty,
ptr_tm.ty,
@ -2504,13 +2504,13 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
});
match mutbl {
hir::Mutability::MutImmutable => {
hir::Mutability::Immutable => {
// Immutable reference. We don't need the base
// to be valid for the entire lifetime of
// the borrow.
break;
}
hir::Mutability::MutMutable => {
hir::Mutability::Mutable => {
// Mutable reference. We *do* need the base
// to be valid, because after the base becomes
// invalid, someone else can use our mutable deref.

2
src/librustc_mir/borrow_check/place_ext.rs
View file

@ -57,7 +57,7 @@ impl<'tcx> PlaceExt<'tcx> for Place<'tcx> {
if *elem == ProjectionElem::Deref {
let ty = Place::ty_from(&self.base, proj_base, body, tcx).ty;
if let ty::RawPtr(..) | ty::Ref(_, _, hir::MutImmutable) = ty.kind {
if let ty::RawPtr(..) | ty::Ref(_, _, hir::Mutability::Immutable) = ty.kind {
// For both derefs of raw pointers and `&T`
// references, the original path is `Copy` and
// therefore not significant. In particular,

4
src/librustc_mir/borrow_check/places_conflict.rs
View file

@ -246,11 +246,11 @@ fn place_components_conflict<'tcx>(
debug!("borrow_conflicts_with_place: shallow access behind ptr");
return false;
}
(ProjectionElem::Deref, ty::Ref(_, _, hir::MutImmutable), _) => {
(ProjectionElem::Deref, ty::Ref(_, _, hir::Mutability::Immutable), _) => {
// Shouldn't be tracked
bug!("Tracking borrow behind shared reference.");
}
(ProjectionElem::Deref, ty::Ref(_, _, hir::MutMutable), AccessDepth::Drop) => {
(ProjectionElem::Deref, ty::Ref(_, _, hir::Mutability::Mutable), AccessDepth::Drop) => {
// Values behind a mutable reference are not access either by dropping a
// value, or by StorageDead
debug!("borrow_conflicts_with_place: drop access behind ptr");

4
src/librustc_mir/borrow_check/prefixes.rs
View file

@ -149,7 +149,7 @@ impl<'cx, 'tcx> Iterator for Prefixes<'cx, 'tcx> {
ty::Ref(
_, /*rgn*/
_, /*ty*/
hir::MutImmutable
hir::Mutability::Immutable
) => {
// don't continue traversing over derefs of raw pointers or shared
// borrows.
@ -160,7 +160,7 @@ impl<'cx, 'tcx> Iterator for Prefixes<'cx, 'tcx> {
ty::Ref(
_, /*rgn*/
_, /*ty*/
hir::MutMutable,
hir::Mutability::Mutable,
) => {
self.next = Some(PlaceRef {
base: cursor.base,

2
src/librustc_mir/build/mod.rs
View file

@ -581,7 +581,7 @@ where
if let hir::PatKind::Binding(_, _, ident, _) = pat.kind {
debuginfo.debug_name = ident.name;
if let Some(&bm) = hir.tables.pat_binding_modes().get(pat.hir_id) {
if bm == ty::BindByValue(hir::MutMutable) {
if bm == ty::BindByValue(hir::Mutability::Mutable) {
mutability = Mutability::Mut;
} else {
mutability = Mutability::Not;

8
src/librustc_mir/hair/cx/expr.rs
View file

@ -860,8 +860,8 @@ impl ToBorrowKind for AutoBorrowMutability {
impl ToBorrowKind for hir::Mutability {
fn to_borrow_kind(&self) -> BorrowKind {
match *self {
hir::MutMutable => BorrowKind::Mut { allow_two_phase_borrow: false },
hir::MutImmutable => BorrowKind::Shared,
hir::Mutability::Mutable => BorrowKind::Mut { allow_two_phase_borrow: false },
hir::Mutability::Immutable => BorrowKind::Shared,
}
}
}
@ -1013,7 +1013,7 @@ fn convert_var(
let ref_closure_ty = cx.tcx.mk_ref(region,
ty::TypeAndMut {
ty: closure_ty,
mutbl: hir::MutImmutable,
mutbl: hir::Mutability::Immutable,
});
Expr {
ty: closure_ty,
@ -1034,7 +1034,7 @@ fn convert_var(
let ref_closure_ty = cx.tcx.mk_ref(region,
ty::TypeAndMut {
ty: closure_ty,
mutbl: hir::MutMutable,
mutbl: hir::Mutability::Mutable,
});
Expr {
ty: closure_ty,

2
src/librustc_mir/hair/pattern/check_match.rs
View file

@ -351,7 +351,7 @@ fn check_for_bindings_named_same_as_variants(cx: &MatchVisitor<'_, '_>, pat: &Pa
pat.walk(|p| {
if let hir::PatKind::Binding(_, _, ident, None) = p.kind {
if let Some(&bm) = cx.tables.pat_binding_modes().get(p.hir_id) {
if bm != ty::BindByValue(hir::MutImmutable) {
if bm != ty::BindByValue(hir::Mutability::Immutable) {
// Nothing to check.
return true;
}

8
src/librustc_mir/hair/pattern/mod.rs
View file

@ -591,14 +591,14 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> {
let bm = *self.tables.pat_binding_modes().get(pat.hir_id)
.expect("missing binding mode");
let (mutability, mode) = match bm {
ty::BindByValue(hir::MutMutable) =>
ty::BindByValue(hir::Mutability::Mutable) =>
(Mutability::Mut, BindingMode::ByValue),
ty::BindByValue(hir::MutImmutable) =>
ty::BindByValue(hir::Mutability::Immutable) =>
(Mutability::Not, BindingMode::ByValue),
ty::BindByReference(hir::MutMutable) =>
ty::BindByReference(hir::Mutability::Mutable) =>
(Mutability::Not, BindingMode::ByRef(
BorrowKind::Mut { allow_two_phase_borrow: false })),
ty::BindByReference(hir::MutImmutable) =>
ty::BindByReference(hir::Mutability::Immutable) =>
(Mutability::Not, BindingMode::ByRef(
BorrowKind::Shared)),
};

14
src/librustc_mir/interpret/intern.rs
View file

@ -214,16 +214,16 @@ for
// const qualification enforces it. We can lift it in the future.
match (self.mode, mutability) {
// immutable references are fine everywhere
(_, hir::Mutability::MutImmutable) => {},
(_, hir::Mutability::Immutable) => {},
// all is "good and well" in the unsoundness of `static mut`
// mutable references are ok in `static`. Either they are treated as immutable
// because they are behind an immutable one, or they are behind an `UnsafeCell`
// and thus ok.
(InternMode::Static, hir::Mutability::MutMutable) => {},
(InternMode::Static, hir::Mutability::Mutable) => {},
// we statically prevent `&mut T` via `const_qualif` and double check this here
(InternMode::ConstBase, hir::Mutability::MutMutable) |
(InternMode::Const, hir::Mutability::MutMutable) => {
(InternMode::ConstBase, hir::Mutability::Mutable) |
(InternMode::Const, hir::Mutability::Mutable) => {
match referenced_ty.kind {
ty::Array(_, n)
if n.eval_usize(self.ecx.tcx.tcx, self.ecx.param_env) == 0 => {}
@ -241,7 +241,7 @@ for
// If there's an immutable reference or we are inside a static, then our
// mutable reference is equivalent to an immutable one. As an example:
// `&&mut Foo` is semantically equivalent to `&&Foo`
(Mutability::Mutable, hir::Mutability::MutMutable) => Mutability::Mutable,
(Mutability::Mutable, hir::Mutability::Mutable) => Mutability::Mutable,
_ => Mutability::Immutable,
};
// Recursing behind references changes the intern mode for constants in order to
@ -273,9 +273,9 @@ pub fn intern_const_alloc_recursive(
) -> InterpResult<'tcx> {
let tcx = ecx.tcx;
let (base_mutability, base_intern_mode) = match place_mut {
Some(hir::Mutability::MutImmutable) => (Mutability::Immutable, InternMode::Static),
Some(hir::Mutability::Immutable) => (Mutability::Immutable, InternMode::Static),
// `static mut` doesn't care about interior mutability, it's mutable anyway
Some(hir::Mutability::MutMutable) => (Mutability::Mutable, InternMode::Static),
Some(hir::Mutability::Mutable) => (Mutability::Mutable, InternMode::Static),
// consts, promoteds. FIXME: what about array lengths, array initializers?
None => (Mutability::Immutable, InternMode::ConstBase),
};

4
src/librustc_mir/shim.rs
View file

@ -456,7 +456,7 @@ impl CloneShimBuilder<'tcx> {
Mutability::Not,
tcx.mk_ref(tcx.lifetimes.re_erased, ty::TypeAndMut {
ty,
mutbl: hir::Mutability::MutImmutable,
mutbl: hir::Mutability::Immutable,
})
);
@ -736,7 +736,7 @@ fn build_call_shim<'tcx>(
Mutability::Not,
tcx.mk_ref(tcx.lifetimes.re_erased, ty::TypeAndMut {
ty: sig.inputs()[0],
mutbl: hir::Mutability::MutMutable
mutbl: hir::Mutability::Mutable
}),
span
));

4
src/librustc_mir/transform/check_consts/mod.rs
View file

@ -82,8 +82,8 @@ impl ConstKind {
HirKind::Const => ConstKind::Const,
HirKind::Static(hir::MutImmutable) => ConstKind::Static,
HirKind::Static(hir::MutMutable) => ConstKind::StaticMut,
HirKind::Static(hir::Mutability::Immutable) => ConstKind::Static,
HirKind::Static(hir::Mutability::Mutable) => ConstKind::StaticMut,
};
Some(mode)

4
src/librustc_mir/transform/generator.rs
View file

@ -392,7 +392,7 @@ fn make_generator_state_argument_indirect<'tcx>(
let ref_gen_ty = tcx.mk_ref(region, ty::TypeAndMut {
ty: gen_ty,
mutbl: hir::MutMutable
mutbl: hir::Mutability::Mutable
});
// Replace the by value generator argument
@ -977,7 +977,7 @@ fn create_generator_drop_shim<'tcx>(
mutability: Mutability::Mut,
ty: tcx.mk_ptr(ty::TypeAndMut {
ty: gen_ty,
mutbl: hir::Mutability::MutMutable,
mutbl: hir::Mutability::Mutable,
}),
user_ty: UserTypeProjections::none(),
name: None,

4
src/librustc_mir/transform/qualify_consts.rs
View file

@ -1367,8 +1367,8 @@ fn determine_mode(tcx: TyCtxt<'_>, hir_id: HirId, def_id: DefId) -> Mode {
hir::BodyOwnerKind::Fn if tcx.is_const_fn(def_id) => Mode::ConstFn,
hir::BodyOwnerKind::Fn => Mode::NonConstFn,
hir::BodyOwnerKind::Const => Mode::Const,
hir::BodyOwnerKind::Static(hir::MutImmutable) => Mode::Static,
hir::BodyOwnerKind::Static(hir::MutMutable) => Mode::StaticMut,
hir::BodyOwnerKind::Static(hir::Mutability::Immutable) => Mode::Static,
hir::BodyOwnerKind::Static(hir::Mutability::Mutable) => Mode::StaticMut,
}
}

2
src/librustc_mir/transform/qualify_min_const_fn.rs
View file

@ -80,7 +80,7 @@ pub fn is_min_const_fn(tcx: TyCtxt<'tcx>, def_id: DefId, body: &'a Body<'tcx>) -
fn check_ty(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, span: Span, fn_def_id: DefId) -> McfResult {
for ty in ty.walk() {
match ty.kind {
ty::Ref(_, _, hir::Mutability::MutMutable) => return Err((
ty::Ref(_, _, hir::Mutability::Mutable) => return Err((
span,
"mutable references in const fn are unstable".into(),
)),

4
src/librustc_mir/util/elaborate_drops.rs
View file

@ -521,7 +521,7 @@ where
let ref_ty = tcx.mk_ref(tcx.lifetimes.re_erased, ty::TypeAndMut {
ty,
mutbl: hir::Mutability::MutMutable
mutbl: hir::Mutability::Mutable
});
let ref_place = self.new_temp(ref_ty);
let unit_temp = Place::from(self.new_temp(tcx.mk_unit()));
@ -580,7 +580,7 @@ where
let ref_ty = tcx.mk_ref(tcx.lifetimes.re_erased, ty::TypeAndMut {
ty: ety,
mutbl: hir::Mutability::MutMutable
mutbl: hir::Mutability::Mutable
});
let ptr = &Place::from(self.new_temp(ref_ty));
let can_go = &Place::from(self.new_temp(tcx.types.bool));

4
src/librustc_traits/chalk_context/program_clauses/builtin.rs
View file

@ -243,7 +243,7 @@ crate fn assemble_builtin_copy_clone_impls<'tcx>(
ty::Float(..) |
ty::RawPtr(..) |
ty::Never |
ty::Ref(_, _, hir::MutImmutable) => (),
ty::Ref(_, _, hir::Mutability::Immutable) => (),
// Non parametric primitive types.
ty::Infer(ty::IntVar(_)) |
@ -319,7 +319,7 @@ crate fn assemble_builtin_copy_clone_impls<'tcx>(
ty::Generator(..) |
ty::Str |
ty::Slice(..) |
ty::Ref(_, _, hir::MutMutable) => (),
ty::Ref(_, _, hir::Mutability::Mutable) => (),
ty::Bound(..) |
ty::GeneratorWitness(..) |

4
src/librustc_typeck/check/_match.rs
View file

@ -430,8 +430,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
let contains_ref_bindings = arms.iter()
.filter_map(|a| a.pat.contains_explicit_ref_binding())
.max_by_key(|m| match *m {
hir::MutMutable => 1,
hir::MutImmutable => 0,
hir::Mutability::Mutable => 1,
hir::Mutability::Immutable => 0,
});
if let Some(m) = contains_ref_bindings {

4
src/librustc_typeck/check/callee.rs
View file

@ -215,8 +215,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
if borrow {
if let ty::Ref(region, _, mutbl) = method.sig.inputs()[0].kind {
let mutbl = match mutbl {
hir::MutImmutable => AutoBorrowMutability::Immutable,
hir::MutMutable => AutoBorrowMutability::Mutable {
hir::Mutability::Immutable => AutoBorrowMutability::Immutable,
hir::Mutability::Mutable => AutoBorrowMutability::Mutable {
// For initial two-phase borrow
// deployment, conservatively omit
// overloaded function call ops.

2
src/librustc_typeck/check/cast.rs
View file

@ -627,7 +627,7 @@ impl<'a, 'tcx> CastCheck<'tcx> {
) -> Result<CastKind, CastError> {
// array-ptr-cast.
if m_expr.mutbl == hir::MutImmutable && m_cast.mutbl == hir::MutImmutable {
if m_expr.mutbl == hir::Mutability::Immutable && m_cast.mutbl == hir::Mutability::Immutable {
if let ty::Array(ety, _) = m_expr.ty.kind {
// Due to the limitations of LLVM global constants,
// region pointers end up pointing at copies of

20
src/librustc_typeck/check/coercion.rs
View file

@ -99,10 +99,10 @@ fn coerce_mutbls<'tcx>(from_mutbl: hir::Mutability,
to_mutbl: hir::Mutability)
-> RelateResult<'tcx, ()> {
match (from_mutbl, to_mutbl) {
(hir::MutMutable, hir::MutMutable) |
(hir::MutImmutable, hir::MutImmutable) |
(hir::MutMutable, hir::MutImmutable) => Ok(()),
(hir::MutImmutable, hir::MutMutable) => Err(TypeError::Mutability),
(hir::Mutability::Mutable, hir::Mutability::Mutable) |
(hir::Mutability::Immutable, hir::Mutability::Immutable) |
(hir::Mutability::Mutable, hir::Mutability::Immutable) => Ok(()),
(hir::Mutability::Immutable, hir::Mutability::Mutable) => Err(TypeError::Mutability),
}
}
@ -410,7 +410,7 @@ impl<'f, 'tcx> Coerce<'f, 'tcx> {
}
};
if ty == a && mt_a.mutbl == hir::MutImmutable && autoderef.step_count() == 1 {
if ty == a && mt_a.mutbl == hir::Mutability::Immutable && autoderef.step_count() == 1 {
// As a special case, if we would produce `&'a *x`, that's
// a total no-op. We end up with the type `&'a T` just as
// we started with. In that case, just skip it
@ -422,7 +422,7 @@ impl<'f, 'tcx> Coerce<'f, 'tcx> {
// `self.x` both have `&mut `type would be a move of
// `self.x`, but we auto-coerce it to `foo(&mut *self.x)`,
// which is a borrow.
assert_eq!(mt_b.mutbl, hir::MutImmutable); // can only coerce &T -> &U
assert_eq!(mt_b.mutbl, hir::Mutability::Immutable); // can only coerce &T -> &U
return success(vec![], ty, obligations);
}
@ -439,8 +439,8 @@ impl<'f, 'tcx> Coerce<'f, 'tcx> {
_ => span_bug!(span, "expected a ref type, got {:?}", ty),
};
let mutbl = match mt_b.mutbl {
hir::MutImmutable => AutoBorrowMutability::Immutable,
hir::MutMutable => AutoBorrowMutability::Mutable {
hir::Mutability::Immutable => AutoBorrowMutability::Immutable,
hir::Mutability::Mutable => AutoBorrowMutability::Mutable {
allow_two_phase_borrow: self.allow_two_phase,
}
};
@ -485,8 +485,8 @@ impl<'f, 'tcx> Coerce<'f, 'tcx> {
let coercion = Coercion(self.cause.span);
let r_borrow = self.next_region_var(coercion);
let mutbl = match mutbl_b {
hir::MutImmutable => AutoBorrowMutability::Immutable,
hir::MutMutable => AutoBorrowMutability::Mutable {
hir::Mutability::Immutable => AutoBorrowMutability::Immutable,
hir::Mutability::Mutable => AutoBorrowMutability::Mutable {
// We don't allow two-phase borrows here, at least for initial
// implementation. If it happens that this coercion is a function argument,
// the reborrow in coerce_borrowed_ptr will pick it up.

4
src/librustc_typeck/check/compare_method.rs
View file

@ -532,8 +532,8 @@ fn compare_self_type<'tcx>(
let can_eq_self = |ty| infcx.can_eq(param_env, untransformed_self_ty, ty).is_ok();
match ExplicitSelf::determine(self_arg_ty, can_eq_self) {
ExplicitSelf::ByValue => "self".to_owned(),
ExplicitSelf::ByReference(_, hir::MutImmutable) => "&self".to_owned(),
ExplicitSelf::ByReference(_, hir::MutMutable) => "&mut self".to_owned(),
ExplicitSelf::ByReference(_, hir::Mutability::Immutable) => "&self".to_owned(),
ExplicitSelf::ByReference(_, hir::Mutability::Mutable) => "&mut self".to_owned(),
_ => format!("self: {}", self_arg_ty)
}
})

10
src/librustc_typeck/check/demand.rs
View file

@ -398,10 +398,10 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
// bar(&x); // error, expected &mut
// ```
let ref_ty = match mutability {
hir::Mutability::MutMutable => {
hir::Mutability::Mutable => {
self.tcx.mk_mut_ref(self.tcx.mk_region(ty::ReStatic), checked_ty)
}
hir::Mutability::MutImmutable => {
hir::Mutability::Immutable => {
self.tcx.mk_imm_ref(self.tcx.mk_region(ty::ReStatic), checked_ty)
}
};
@ -451,7 +451,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
})) = self.tcx.hir().find(
self.tcx.hir().get_parent_node(expr.hir_id),
) {
if mutability == hir::Mutability::MutMutable {
if mutability == hir::Mutability::Mutable {
// Found the following case:
// fn foo(opt: &mut Option<String>){ opt = None }
// --- ^^^^
@ -470,12 +470,12 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
}
return Some(match mutability {
hir::Mutability::MutMutable => (
hir::Mutability::Mutable => (
sp,
"consider mutably borrowing here",
format!("{}&mut {}", field_name, sugg_expr),
),
hir::Mutability::MutImmutable => (
hir::Mutability::Immutable => (
sp,
"consider borrowing here",
format!("{}&{}", field_name, sugg_expr),

4
src/librustc_typeck/check/expr.rs
View file

@ -363,8 +363,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
let method = self.register_infer_ok_obligations(ok);
if let ty::Ref(region, _, mutbl) = method.sig.inputs()[0].kind {
let mutbl = match mutbl {
hir::MutImmutable => AutoBorrowMutability::Immutable,
hir::MutMutable => AutoBorrowMutability::Mutable {
hir::Mutability::Immutable => AutoBorrowMutability::Immutable,
hir::Mutability::Mutable => AutoBorrowMutability::Mutable {
// (It shouldn't actually matter for unary ops whether
// we enable two-phase borrows or not, since a unary
// op has no additional operands.)

22
src/librustc_typeck/check/intrinsic.rs
View file

@ -172,7 +172,7 @@ pub fn check_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem) {
"prefetch_read_instruction" | "prefetch_write_instruction" => {
(1, vec![tcx.mk_ptr(ty::TypeAndMut {
ty: param(0),
mutbl: hir::MutImmutable
mutbl: hir::Mutability::Immutable
}), tcx.types.i32],
tcx.mk_unit())
}
@ -188,13 +188,13 @@ pub fn check_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem) {
vec![
tcx.mk_ptr(ty::TypeAndMut {
ty: param(0),
mutbl: hir::MutImmutable
mutbl: hir::Mutability::Immutable
}),
tcx.types.isize
],
tcx.mk_ptr(ty::TypeAndMut {
ty: param(0),
mutbl: hir::MutImmutable
mutbl: hir::Mutability::Immutable
}))
}
"copy" | "copy_nonoverlapping" => {
@ -202,11 +202,11 @@ pub fn check_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem) {
vec![
tcx.mk_ptr(ty::TypeAndMut {
ty: param(0),
mutbl: hir::MutImmutable
mutbl: hir::Mutability::Immutable
}),
tcx.mk_ptr(ty::TypeAndMut {
ty: param(0),
mutbl: hir::MutMutable
mutbl: hir::Mutability::Mutable
}),
tcx.types.usize,
],
@ -217,11 +217,11 @@ pub fn check_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem) {
vec![
tcx.mk_ptr(ty::TypeAndMut {
ty: param(0),
mutbl: hir::MutMutable
mutbl: hir::Mutability::Mutable
}),
tcx.mk_ptr(ty::TypeAndMut {
ty: param(0),
mutbl: hir::MutImmutable
mutbl: hir::Mutability::Immutable
}),
tcx.types.usize,
],
@ -232,7 +232,7 @@ pub fn check_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem) {
vec![
tcx.mk_ptr(ty::TypeAndMut {
ty: param(0),
mutbl: hir::MutMutable
mutbl: hir::Mutability::Mutable
}),
tcx.types.u8,
tcx.types.usize,
@ -357,14 +357,14 @@ pub fn check_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem) {
}
"va_start" | "va_end" => {
match mk_va_list_ty(hir::MutMutable) {
match mk_va_list_ty(hir::Mutability::Mutable) {
Some((va_list_ref_ty, _)) => (0, vec![va_list_ref_ty], tcx.mk_unit()),
None => bug!("`va_list` language item needed for C-variadic intrinsics")
}
}
"va_copy" => {
match mk_va_list_ty(hir::MutImmutable) {
match mk_va_list_ty(hir::Mutability::Immutable) {
Some((va_list_ref_ty, va_list_ty)) => {
let va_list_ptr_ty = tcx.mk_mut_ptr(va_list_ty);
(0, vec![va_list_ptr_ty, va_list_ref_ty], tcx.mk_unit())
@ -374,7 +374,7 @@ pub fn check_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem) {
}
"va_arg" => {
match mk_va_list_ty(hir::MutMutable) {
match mk_va_list_ty(hir::Mutability::Mutable) {
Some((va_list_ref_ty, _)) => (1, vec![va_list_ref_ty], param(0)),
None => bug!("`va_list` language item needed for C-variadic intrinsics")
}

10
src/librustc_typeck/check/method/confirm.rs
View file

@ -131,7 +131,7 @@ impl<'a, 'tcx> ConfirmContext<'a, 'tcx> {
sig: method_sig,
};
if let Some(hir::MutMutable) = pick.autoref {
if let Some(hir::Mutability::Mutable) = pick.autoref {
self.convert_place_derefs_to_mutable();
}
@ -172,8 +172,8 @@ impl<'a, 'tcx> ConfirmContext<'a, 'tcx> {
ty: target
});
let mutbl = match mutbl {
hir::MutImmutable => AutoBorrowMutability::Immutable,
hir::MutMutable => AutoBorrowMutability::Mutable {
hir::Mutability::Immutable => AutoBorrowMutability::Immutable,
hir::Mutability::Mutable => AutoBorrowMutability::Mutable {
// Method call receivers are the primary use case
// for two-phase borrows.
allow_two_phase_borrow: AllowTwoPhase::Yes,
@ -554,8 +554,8 @@ impl<'a, 'tcx> ConfirmContext<'a, 'tcx> {
if let Adjust::Borrow(AutoBorrow::Ref(..)) = adjustment.kind {
debug!("convert_place_op_to_mutable: converting autoref {:?}", adjustment);
let mutbl = match mutbl {
hir::MutImmutable => AutoBorrowMutability::Immutable,
hir::MutMutable => AutoBorrowMutability::Mutable {
hir::Mutability::Immutable => AutoBorrowMutability::Immutable,
hir::Mutability::Mutable => AutoBorrowMutability::Mutable {
// For initial two-phase borrow
// deployment, conservatively omit
// overloaded operators.

8
src/librustc_typeck/check/method/probe.rs
View file

@ -606,11 +606,11 @@ impl<'a, 'tcx> ProbeContext<'a, 'tcx> {
let lang_def_id = lang_items.slice_u8_alloc_impl();
self.assemble_inherent_impl_for_primitive(lang_def_id);
}
ty::RawPtr(ty::TypeAndMut { ty: _, mutbl: hir::MutImmutable }) => {
ty::RawPtr(ty::TypeAndMut { ty: _, mutbl: hir::Mutability::Immutable }) => {
let lang_def_id = lang_items.const_ptr_impl();
self.assemble_inherent_impl_for_primitive(lang_def_id);
}
ty::RawPtr(ty::TypeAndMut { ty: _, mutbl: hir::MutMutable }) => {
ty::RawPtr(ty::TypeAndMut { ty: _, mutbl: hir::Mutability::Mutable }) => {
let lang_def_id = lang_items.mut_ptr_impl();
self.assemble_inherent_impl_for_primitive(lang_def_id);
}
@ -1045,8 +1045,8 @@ impl<'a, 'tcx> ProbeContext<'a, 'tcx> {
span_bug!(self.span, "{:?} was applicable but now isn't?", step.self_ty)
});
self.pick_by_value_method(step, self_ty).or_else(|| {
self.pick_autorefd_method(step, self_ty, hir::MutImmutable).or_else(|| {
self.pick_autorefd_method(step, self_ty, hir::MutMutable)
self.pick_autorefd_method(step, self_ty, hir::Mutability::Immutable).or_else(|| {
self.pick_autorefd_method(step, self_ty, hir::Mutability::Mutable)
})})})
.next()
}

10
src/librustc_typeck/check/mod.rs
View file

@ -387,8 +387,8 @@ pub enum Needs {
impl Needs {
fn maybe_mut_place(m: hir::Mutability) -> Self {
match m {
hir::MutMutable => Needs::MutPlace,
hir::MutImmutable => Needs::None,
hir::Mutability::Mutable => Needs::MutPlace,
hir::Mutability::Immutable => Needs::None,
}
}
}
@ -1281,7 +1281,7 @@ fn check_fn<'a, 'tcx>(
ty::Ref(region, ty, mutbl) => match ty.kind {
ty::Adt(ref adt, _) => {
adt.did == panic_info_did &&
mutbl == hir::Mutability::MutImmutable &&
mutbl == hir::Mutability::Immutable &&
*region != RegionKind::ReStatic
},
_ => false,
@ -3197,8 +3197,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
let mut adjustments = autoderef.adjust_steps(self, needs);
if let ty::Ref(region, _, r_mutbl) = method.sig.inputs()[0].kind {
let mutbl = match r_mutbl {
hir::MutImmutable => AutoBorrowMutability::Immutable,
hir::MutMutable => AutoBorrowMutability::Mutable {
hir::Mutability::Immutable => AutoBorrowMutability::Immutable,
hir::Mutability::Mutable => AutoBorrowMutability::Mutable {
// Indexing can be desugared to a method call,
// so maybe we could use two-phase here.
// See the documentation of AllowTwoPhase for why that's

8
src/librustc_typeck/check/op.rs
View file

@ -204,8 +204,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
if is_assign == IsAssign::Yes || by_ref_binop {
if let ty::Ref(region, _, mutbl) = method.sig.inputs()[0].kind {
let mutbl = match mutbl {
hir::MutImmutable => AutoBorrowMutability::Immutable,
hir::MutMutable => AutoBorrowMutability::Mutable {
hir::Mutability::Immutable => AutoBorrowMutability::Immutable,
hir::Mutability::Mutable => AutoBorrowMutability::Mutable {
// Allow two-phase borrows for binops in initial deployment
// since they desugar to methods
allow_two_phase_borrow: AllowTwoPhase::Yes,
@ -221,8 +221,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
if by_ref_binop {
if let ty::Ref(region, _, mutbl) = method.sig.inputs()[1].kind {
let mutbl = match mutbl {
hir::MutImmutable => AutoBorrowMutability::Immutable,
hir::MutMutable => AutoBorrowMutability::Mutable {
hir::Mutability::Immutable => AutoBorrowMutability::Immutable,
hir::Mutability::Mutable => AutoBorrowMutability::Mutable {
// Allow two-phase borrows for binops in initial deployment
// since they desugar to methods
allow_two_phase_borrow: AllowTwoPhase::Yes,

8
src/librustc_typeck/check/pat.rs
View file

@ -30,7 +30,7 @@ https://doc.rust-lang.org/reference/types.html#trait-objects";
impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
pub fn check_pat_top(&self, pat: &'tcx Pat, expected: Ty<'tcx>, discrim_span: Option<Span>) {
let def_bm = BindingMode::BindByValue(hir::Mutability::MutImmutable);
let def_bm = BindingMode::BindByValue(hir::Mutability::Immutable);
self.check_pat(pat, expected, def_bm, discrim_span);
}
@ -194,7 +194,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
//
// See issue #46688.
let def_bm = match pat.kind {
PatKind::Ref(..) => ty::BindByValue(hir::MutImmutable),
PatKind::Ref(..) => ty::BindByValue(hir::Mutability::Immutable),
_ => def_bm,
};
(expected, def_bm)
@ -275,10 +275,10 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
// (depending on whether we observe `&` or `&mut`).
ty::BindByValue(_) |
// When `ref mut`, stay a `ref mut` (on `&mut`) or downgrade to `ref` (on `&`).
ty::BindByReference(hir::Mutability::MutMutable) => inner_mutability,
ty::BindByReference(hir::Mutability::Mutable) => inner_mutability,
// Once a `ref`, always a `ref`.
// This is because a `& &mut` cannot mutate the underlying value.
ty::BindByReference(m @ hir::Mutability::MutImmutable) => m,
ty::BindByReference(m @ hir::Mutability::Immutable) => m,
});
}

2
src/librustc_typeck/coherence/builtin.rs
View file

@ -358,7 +358,7 @@ pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: DefId) -> CoerceUn
let check_mutbl = |mt_a: ty::TypeAndMut<'tcx>,
mt_b: ty::TypeAndMut<'tcx>,
mk_ptr: &dyn Fn(Ty<'tcx>) -> Ty<'tcx>| {
if (mt_a.mutbl, mt_b.mutbl) == (hir::MutImmutable, hir::MutMutable) {
if (mt_a.mutbl, mt_b.mutbl) == (hir::Mutability::Immutable, hir::Mutability::Mutable) {
infcx.report_mismatched_types(&cause,
mk_ptr(mt_b.ty),
target,

4
src/librustc_typeck/coherence/inherent_impls.rs
View file

@ -107,7 +107,7 @@ impl ItemLikeVisitor<'v> for InherentCollect<'tcx> {
"[T]",
item.span);
}
ty::RawPtr(ty::TypeAndMut { ty: _, mutbl: hir::MutImmutable }) => {
ty::RawPtr(ty::TypeAndMut { ty: _, mutbl: hir::Mutability::Immutable }) => {
self.check_primitive_impl(def_id,
lang_items.const_ptr_impl(),
None,
@ -115,7 +115,7 @@ impl ItemLikeVisitor<'v> for InherentCollect<'tcx> {
"*const T",
item.span);
}
ty::RawPtr(ty::TypeAndMut { ty: _, mutbl: hir::MutMutable }) => {
ty::RawPtr(ty::TypeAndMut { ty: _, mutbl: hir::Mutability::Mutable }) => {
self.check_primitive_impl(def_id,
lang_items.mut_ptr_impl(),
None,

4
src/librustc_typeck/variance/constraints.rs
View file

@ -454,12 +454,12 @@ impl<'a, 'tcx> ConstraintContext<'a, 'tcx> {
mt: &ty::TypeAndMut<'tcx>,
variance: VarianceTermPtr<'a>) {
match mt.mutbl {
hir::MutMutable => {
hir::Mutability::Mutable => {
let invar = self.invariant(variance);
self.add_constraints_from_ty(current, mt.ty, invar);
}
hir::MutImmutable => {
hir::Mutability::Immutable => {
self.add_constraints_from_ty(current, mt.ty, variance);
}
}

4
src/librustdoc/clean/mod.rs
View file

@ -3859,8 +3859,8 @@ pub enum Mutability {
impl Clean<Mutability> for hir::Mutability {
fn clean(&self, _: &DocContext<'_>) -> Mutability {
match self {
&hir::MutMutable => Mutable,
&hir::MutImmutable => Immutable,
&hir::Mutability::Mutable => Mutable,
&hir::Mutability::Immutable => Immutable,
}
}
}

24
src/libsyntax/ast.rs
View file

@ -733,6 +733,30 @@ pub enum Mutability {
Immutable,
}
impl Mutability {
/// Returns `MutMutable` only if both `self` and `other` are mutable.
pub fn and(self, other: Self) -> Self {
match self {
Mutability::Mutable => other,
Mutability::Immutable => Mutability::Immutable,
}
}
pub fn invert(self) -> Self {
match self {
Mutability::Mutable => Mutability::Immutable,
Mutability::Immutable => Mutability::Mutable,
}
}
pub fn prefix_str(&self) -> &'static str {
match self {
Mutability::Mutable => "mut ",
Mutability::Immutable => "",
}
}
}
#[derive(Clone, PartialEq, RustcEncodable, RustcDecodable, Debug, Copy)]
pub enum BinOpKind {
/// The `+` operator (addition)