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Auto merge of #101241 - camsteffen:refactor-binding-annotations, r=cjgillot

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`BindingAnnotation` refactor

* `ast::BindingMode` is deleted and replaced with `hir::BindingAnnotation` (which is moved to `ast`)
* `BindingAnnotation` is changed from an enum to a tuple struct e.g. `BindingAnnotation(ByRef::No, Mutability::Mut)`
* Associated constants added for convenience `BindingAnnotation::{NONE, REF, MUT, REF_MUT}`

One goal is to make it more clear that `BindingAnnotation` merely represents syntax `ref mut` and not the actual binding mode. This was especially confusing since we had `ast::BindingMode`->`hir::BindingAnnotation`->`thir::BindingMode`.

I wish there were more symmetry between `ByRef` and `Mutability` (variant) naming (maybe `Mutable::Yes`?), and I also don't love how long the name `BindingAnnotation` is, but this seems like the best compromise. Ideas welcome.
This commit is contained in:
bors 2022-09-06 03:16:29 +00:00
commit 6c358c67d4
61 changed files with 278 additions and 333 deletions
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81
compiler/rustc_ast/src/ast.rs
View File

@ -594,7 +594,7 @@ impl Pat {
// In a type expression `_` is an inference variable.
PatKind::Wild => TyKind::Infer,
// An IDENT pattern with no binding mode would be valid as path to a type. E.g. `u32`.
PatKind::Ident(BindingMode::ByValue(Mutability::Not), ident, None) => {
PatKind::Ident(BindingAnnotation::NONE, ident, None) => {
TyKind::Path(None, Path::from_ident(*ident))
}
PatKind::Path(qself, path) => TyKind::Path(qself.clone(), path.clone()),
@ -681,10 +681,43 @@ pub struct PatField {
pub is_placeholder: bool,
}
#[derive(Clone, PartialEq, Encodable, Decodable, Debug, Copy)]
pub enum BindingMode {
ByRef(Mutability),
ByValue(Mutability),
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
#[derive(Encodable, Decodable, HashStable_Generic)]
pub enum ByRef {
Yes,
No,
}
impl From<bool> for ByRef {
fn from(b: bool) -> ByRef {
match b {
false => ByRef::No,
true => ByRef::Yes,
}
}
}
/// Explicit binding annotations given in the HIR for a binding. Note
/// that this is not the final binding *mode* that we infer after type
/// inference.
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
#[derive(Encodable, Decodable, HashStable_Generic)]
pub struct BindingAnnotation(pub ByRef, pub Mutability);
impl BindingAnnotation {
pub const NONE: Self = Self(ByRef::No, Mutability::Not);
pub const REF: Self = Self(ByRef::Yes, Mutability::Not);
pub const MUT: Self = Self(ByRef::No, Mutability::Mut);
pub const REF_MUT: Self = Self(ByRef::Yes, Mutability::Mut);
pub fn prefix_str(self) -> &'static str {
match self {
Self::NONE => "",
Self::REF => "ref ",
Self::MUT => "mut ",
Self::REF_MUT => "ref mut ",
}
}
}
#[derive(Clone, Encodable, Decodable, Debug)]
@ -713,7 +746,7 @@ pub enum PatKind {
/// or a unit struct/variant pattern, or a const pattern (in the last two cases the third
/// field must be `None`). Disambiguation cannot be done with parser alone, so it happens
/// during name resolution.
Ident(BindingMode, Ident, Option<P<Pat>>),
Ident(BindingAnnotation, Ident, Option<P<Pat>>),
/// A struct or struct variant pattern (e.g., `Variant {x, y, ..}`).
/// The `bool` is `true` in the presence of a `..`.
@ -2228,7 +2261,7 @@ pub type ExplicitSelf = Spanned<SelfKind>;
impl Param {
/// Attempts to cast parameter to `ExplicitSelf`.
pub fn to_self(&self) -> Option<ExplicitSelf> {
if let PatKind::Ident(BindingMode::ByValue(mutbl), ident, _) = self.pat.kind {
if let PatKind::Ident(BindingAnnotation(ByRef::No, mutbl), ident, _) = self.pat.kind {
if ident.name == kw::SelfLower {
return match self.ty.kind {
TyKind::ImplicitSelf => Some(respan(self.pat.span, SelfKind::Value(mutbl))),
@ -2258,23 +2291,10 @@ impl Param {
pub fn from_self(attrs: AttrVec, eself: ExplicitSelf, eself_ident: Ident) -> Param {
let span = eself.span.to(eself_ident.span);
let infer_ty = P(Ty { id: DUMMY_NODE_ID, kind: TyKind::ImplicitSelf, span, tokens: None });
let param = |mutbl, ty| Param {
attrs,
pat: P(Pat {
id: DUMMY_NODE_ID,
kind: PatKind::Ident(BindingMode::ByValue(mutbl), eself_ident, None),
span,
tokens: None,
}),
span,
ty,
id: DUMMY_NODE_ID,
is_placeholder: false,
};
match eself.node {
SelfKind::Explicit(ty, mutbl) => param(mutbl, ty),
SelfKind::Value(mutbl) => param(mutbl, infer_ty),
SelfKind::Region(lt, mutbl) => param(
let (mutbl, ty) = match eself.node {
SelfKind::Explicit(ty, mutbl) => (mutbl, ty),
SelfKind::Value(mutbl) => (mutbl, infer_ty),
SelfKind::Region(lt, mutbl) => (
Mutability::Not,
P(Ty {
id: DUMMY_NODE_ID,
@ -2283,6 +2303,19 @@ impl Param {
tokens: None,
}),
),
};
Param {
attrs,
pat: P(Pat {
id: DUMMY_NODE_ID,
kind: PatKind::Ident(BindingAnnotation(ByRef::No, mutbl), eself_ident, None),
span,
tokens: None,
}),
span,
ty,
id: DUMMY_NODE_ID,
is_placeholder: false,
}
}
}

6
compiler/rustc_ast_lowering/src/expr.rs
View File

@ -577,7 +577,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
let (pat, task_context_hid) = self.pat_ident_binding_mode(
span,
Ident::with_dummy_span(sym::_task_context),
hir::BindingAnnotation::Mutable,
hir::BindingAnnotation::MUT,
);
let param = hir::Param {
hir_id: self.next_id(),
@ -671,7 +671,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
// this name to identify what is being awaited by a suspended async functions.
let awaitee_ident = Ident::with_dummy_span(sym::__awaitee);
let (awaitee_pat, awaitee_pat_hid) =
self.pat_ident_binding_mode(span, awaitee_ident, hir::BindingAnnotation::Mutable);
self.pat_ident_binding_mode(span, awaitee_ident, hir::BindingAnnotation::MUT);
let task_context_ident = Ident::with_dummy_span(sym::_task_context);
@ -1433,7 +1433,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
// `mut iter`
let iter = Ident::with_dummy_span(sym::iter);
let (iter_pat, iter_pat_nid) =
self.pat_ident_binding_mode(head_span, iter, hir::BindingAnnotation::Mutable);
self.pat_ident_binding_mode(head_span, iter, hir::BindingAnnotation::MUT);
// `match Iterator::next(&mut iter) { ... }`
let match_expr = {

11
compiler/rustc_ast_lowering/src/item.rs
View File

@ -1083,12 +1083,9 @@ impl<'hir> LoweringContext<'_, 'hir> {
// Check if this is a binding pattern, if so, we can optimize and avoid adding a
// `let <pat> = __argN;` statement. In this case, we do not rename the parameter.
let (ident, is_simple_parameter) = match parameter.pat.kind {
hir::PatKind::Binding(
hir::BindingAnnotation::Unannotated | hir::BindingAnnotation::Mutable,
_,
ident,
_,
) => (ident, true),
hir::PatKind::Binding(hir::BindingAnnotation(ByRef::No, _), _, ident, _) => {
(ident, true)
}
// For `ref mut` or wildcard arguments, we can't reuse the binding, but
// we can keep the same name for the parameter.
// This lets rustdoc render it correctly in documentation.
@ -1153,7 +1150,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
let (move_pat, move_id) = this.pat_ident_binding_mode(
desugared_span,
ident,
hir::BindingAnnotation::Mutable,
hir::BindingAnnotation::MUT,
);
let move_expr = this.expr_ident(desugared_span, ident, new_parameter_id);
let move_stmt = this.stmt_let_pat(

7
compiler/rustc_ast_lowering/src/lib.rs
View File

@ -1692,10 +1692,9 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
output,
c_variadic,
implicit_self: decl.inputs.get(0).map_or(hir::ImplicitSelfKind::None, |arg| {
use BindingMode::{ByRef, ByValue};
let is_mutable_pat = matches!(
arg.pat.kind,
PatKind::Ident(ByValue(Mutability::Mut) | ByRef(Mutability::Mut), ..)
PatKind::Ident(hir::BindingAnnotation(_, Mutability::Mut), ..)
);
match arg.ty.kind {
@ -2360,11 +2359,11 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
}
fn pat_ident(&mut self, span: Span, ident: Ident) -> (&'hir hir::Pat<'hir>, hir::HirId) {
self.pat_ident_binding_mode(span, ident, hir::BindingAnnotation::Unannotated)
self.pat_ident_binding_mode(span, ident, hir::BindingAnnotation::NONE)
}
fn pat_ident_mut(&mut self, span: Span, ident: Ident) -> (hir::Pat<'hir>, hir::HirId) {
self.pat_ident_binding_mode_mut(span, ident, hir::BindingAnnotation::Unannotated)
self.pat_ident_binding_mode_mut(span, ident, hir::BindingAnnotation::NONE)
}
fn pat_ident_binding_mode(

27
compiler/rustc_ast_lowering/src/pat.rs
View File

@ -24,7 +24,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
let node = loop {
match pattern.kind {
PatKind::Wild => break hir::PatKind::Wild,
PatKind::Ident(ref binding_mode, ident, ref sub) => {
PatKind::Ident(binding_mode, ident, ref sub) => {
let lower_sub = |this: &mut Self| sub.as_ref().map(|s| this.lower_pat(&*s));
break self.lower_pat_ident(pattern, binding_mode, ident, lower_sub);
}
@ -176,9 +176,9 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
let mut prev_rest_span = None;
// Lowers `$bm $ident @ ..` to `$bm $ident @ _`.
let lower_rest_sub = |this: &mut Self, pat, bm, ident, sub| {
let lower_rest_sub = |this: &mut Self, pat, ann, ident, sub| {
let lower_sub = |this: &mut Self| Some(this.pat_wild_with_node_id_of(sub));
let node = this.lower_pat_ident(pat, bm, ident, lower_sub);
let node = this.lower_pat_ident(pat, ann, ident, lower_sub);
this.pat_with_node_id_of(pat, node)
};
@ -194,9 +194,9 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
}
// Found a sub-slice pattern `$binding_mode $ident @ ..`.
// Record, lower it to `$binding_mode $ident @ _`, and stop here.
PatKind::Ident(ref bm, ident, Some(ref sub)) if sub.is_rest() => {
PatKind::Ident(ann, ident, Some(ref sub)) if sub.is_rest() => {
prev_rest_span = Some(sub.span);
slice = Some(self.arena.alloc(lower_rest_sub(self, pat, bm, ident, sub)));
slice = Some(self.arena.alloc(lower_rest_sub(self, pat, ann, ident, sub)));
break;
}
// It was not a subslice pattern so lower it normally.
@ -209,9 +209,9 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
// There was a previous subslice pattern; make sure we don't allow more.
let rest_span = match pat.kind {
PatKind::Rest => Some(pat.span),
PatKind::Ident(ref bm, ident, Some(ref sub)) if sub.is_rest() => {
PatKind::Ident(ann, ident, Some(ref sub)) if sub.is_rest() => {
// #69103: Lower into `binding @ _` as above to avoid ICEs.
after.push(lower_rest_sub(self, pat, bm, ident, sub));
after.push(lower_rest_sub(self, pat, ann, ident, sub));
Some(sub.span)
}
_ => None,
@ -235,7 +235,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
fn lower_pat_ident(
&mut self,
p: &Pat,
binding_mode: &BindingMode,
annotation: BindingAnnotation,
ident: Ident,
lower_sub: impl FnOnce(&mut Self) -> Option<&'hir hir::Pat<'hir>>,
) -> hir::PatKind<'hir> {
@ -248,7 +248,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
};
hir::PatKind::Binding(
self.lower_binding_mode(binding_mode),
annotation,
self.lower_node_id(canonical_id),
self.lower_ident(ident),
lower_sub(self),
@ -269,15 +269,6 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
}
}
fn lower_binding_mode(&mut self, b: &BindingMode) -> hir::BindingAnnotation {
match *b {
BindingMode::ByValue(Mutability::Not) => hir::BindingAnnotation::Unannotated,
BindingMode::ByRef(Mutability::Not) => hir::BindingAnnotation::Ref,
BindingMode::ByValue(Mutability::Mut) => hir::BindingAnnotation::Mutable,
BindingMode::ByRef(Mutability::Mut) => hir::BindingAnnotation::RefMut,
}
}
fn pat_wild_with_node_id_of(&mut self, p: &Pat) -> &'hir hir::Pat<'hir> {
self.arena.alloc(self.pat_with_node_id_of(p, hir::PatKind::Wild))
}

4
compiler/rustc_ast_passes/src/ast_validation.rs
View File

@ -281,8 +281,8 @@ impl<'a> AstValidator<'a> {
fn check_decl_no_pat(decl: &FnDecl, mut report_err: impl FnMut(Span, Option<Ident>, bool)) {
for Param { pat, .. } in &decl.inputs {
match pat.kind {
PatKind::Ident(BindingMode::ByValue(Mutability::Not), _, None) | PatKind::Wild => {}
PatKind::Ident(BindingMode::ByValue(Mutability::Mut), ident, None) => {
PatKind::Ident(BindingAnnotation::NONE, _, None) | PatKind::Wild => {}
PatKind::Ident(BindingAnnotation::MUT, ident, None) => {
report_err(pat.span, Some(ident), true)
}
_ => report_err(pat.span, None, false),

26
compiler/rustc_ast_pretty/src/pprust/state.rs
View File

@ -11,8 +11,8 @@ use rustc_ast::tokenstream::{TokenStream, TokenTree};
use rustc_ast::util::classify;
use rustc_ast::util::comments::{gather_comments, Comment, CommentStyle};
use rustc_ast::util::parser;
use rustc_ast::{self as ast, BlockCheckMode, PatKind, RangeEnd, RangeSyntax};
use rustc_ast::{attr, Term};
use rustc_ast::{self as ast, BlockCheckMode, Mutability, PatKind, RangeEnd, RangeSyntax};
use rustc_ast::{attr, BindingAnnotation, ByRef, Term};
use rustc_ast::{GenericArg, MacArgs, MacArgsEq};
use rustc_ast::{GenericBound, SelfKind, TraitBoundModifier};
use rustc_ast::{InlineAsmOperand, InlineAsmRegOrRegClass};
@ -1399,16 +1399,12 @@ impl<'a> State<'a> {
is that it doesn't matter */
match pat.kind {
PatKind::Wild => self.word("_"),
PatKind::Ident(binding_mode, ident, ref sub) => {
match binding_mode {
ast::BindingMode::ByRef(mutbl) => {
self.word_nbsp("ref");
self.print_mutability(mutbl, false);
}
ast::BindingMode::ByValue(ast::Mutability::Not) => {}
ast::BindingMode::ByValue(ast::Mutability::Mut) => {
self.word_nbsp("mut");
}
PatKind::Ident(BindingAnnotation(by_ref, mutbl), ident, ref sub) => {
if by_ref == ByRef::Yes {
self.word_nbsp("ref");
}
if mutbl == Mutability::Mut {
self.word_nbsp("mut");
}
self.print_ident(ident);
if let Some(ref p) = *sub {
@ -1487,12 +1483,10 @@ impl<'a> State<'a> {
}
PatKind::Ref(ref inner, mutbl) => {
self.word("&");
if mutbl == ast::Mutability::Mut {
if mutbl == Mutability::Mut {
self.word("mut ");
}
if let PatKind::Ident(ast::BindingMode::ByValue(ast::Mutability::Mut), ..) =
inner.kind
{
if let PatKind::Ident(ast::BindingAnnotation::MUT, ..) = inner.kind {
self.popen();
self.print_pat(inner);
self.pclose();

2
compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
View File

@ -367,7 +367,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
if let Some(Node::Pat(pat)) = self.infcx.tcx.hir().find(upvar_hir_id)
&& let hir::PatKind::Binding(
hir::BindingAnnotation::Unannotated,
hir::BindingAnnotation::NONE,
_,
upvar_ident,
_,

28
compiler/rustc_builtin_macros/src/deriving/generic/mod.rs
View File

@ -164,7 +164,9 @@ pub use SubstructureFields::*;
use crate::deriving;
use rustc_ast::ptr::P;
use rustc_ast::{self as ast, EnumDef, Expr, Generics, PatKind};
use rustc_ast::{
self as ast, BindingAnnotation, ByRef, EnumDef, Expr, Generics, Mutability, PatKind,
};
use rustc_ast::{GenericArg, GenericParamKind, VariantData};
use rustc_attr as attr;
use rustc_expand::base::{Annotatable, ExtCtxt};
@ -1063,9 +1065,9 @@ impl<'a> MethodDef<'a> {
let mut body = mk_body(cx, selflike_fields);
let struct_path = cx.path(span, vec![Ident::new(kw::SelfUpper, type_ident.span)]);
let use_ref_pat = is_packed && !always_copy;
let by_ref = ByRef::from(is_packed && !always_copy);
let patterns =
trait_.create_struct_patterns(cx, struct_path, struct_def, &prefixes, use_ref_pat);
trait_.create_struct_patterns(cx, struct_path, struct_def, &prefixes, by_ref);
// Do the let-destructuring.
let mut stmts: Vec<_> = iter::zip(selflike_args, patterns)
@ -1247,13 +1249,13 @@ impl<'a> MethodDef<'a> {
let sp = variant.span.with_ctxt(trait_.span.ctxt());
let variant_path = cx.path(sp, vec![type_ident, variant.ident]);
let use_ref_pat = false; // because enums can't be repr(packed)
let by_ref = ByRef::No; // because enums can't be repr(packed)
let mut subpats: Vec<_> = trait_.create_struct_patterns(
cx,
variant_path,
&variant.data,
&prefixes,
use_ref_pat,
by_ref,
);
// `(VariantK, VariantK, ...)` or just `VariantK`.
@ -1414,7 +1416,7 @@ impl<'a> TraitDef<'a> {
struct_path: ast::Path,
struct_def: &'a VariantData,
prefixes: &[String],
use_ref_pat: bool,
by_ref: ByRef,
) -> Vec<P<ast::Pat>> {
prefixes
.iter()
@ -1422,17 +1424,19 @@ impl<'a> TraitDef<'a> {
let pieces_iter =
struct_def.fields().iter().enumerate().map(|(i, struct_field)| {
let sp = struct_field.span.with_ctxt(self.span.ctxt());
let binding_mode = if use_ref_pat {
ast::BindingMode::ByRef(ast::Mutability::Not)
} else {
ast::BindingMode::ByValue(ast::Mutability::Not)
};
let ident = self.mk_pattern_ident(prefix, i);
let path = ident.with_span_pos(sp);
(
sp,
struct_field.ident,
cx.pat(path.span, PatKind::Ident(binding_mode, path, None)),
cx.pat(
path.span,
PatKind::Ident(
BindingAnnotation(by_ref, Mutability::Not),
path,
None,
),
),
)
});

10
compiler/rustc_expand/src/build.rs
View File

@ -178,8 +178,7 @@ impl<'a> ExtCtxt<'a> {
ex: P<ast::Expr>,
) -> ast::Stmt {
let pat = if mutbl {
let binding_mode = ast::BindingMode::ByValue(ast::Mutability::Mut);
self.pat_ident_binding_mode(sp, ident, binding_mode)
self.pat_ident_binding_mode(sp, ident, ast::BindingAnnotation::MUT)
} else {
self.pat_ident(sp, ident)
};
@ -445,17 +444,16 @@ impl<'a> ExtCtxt<'a> {
self.pat(span, PatKind::Lit(expr))
}
pub fn pat_ident(&self, span: Span, ident: Ident) -> P<ast::Pat> {
let binding_mode = ast::BindingMode::ByValue(ast::Mutability::Not);
self.pat_ident_binding_mode(span, ident, binding_mode)
self.pat_ident_binding_mode(span, ident, ast::BindingAnnotation::NONE)
}
pub fn pat_ident_binding_mode(
&self,
span: Span,
ident: Ident,
bm: ast::BindingMode,
ann: ast::BindingAnnotation,
) -> P<ast::Pat> {
let pat = PatKind::Ident(bm, ident.with_span_pos(span), None);
let pat = PatKind::Ident(ann, ident.with_span_pos(span), None);
self.pat(span, pat)
}
pub fn pat_path(&self, span: Span, path: ast::Path) -> P<ast::Pat> {

26
compiler/rustc_hir/src/hir.rs
View File

@ -7,7 +7,7 @@ use crate::LangItem;
use rustc_ast as ast;
use rustc_ast::util::parser::ExprPrecedence;
use rustc_ast::{Attribute, FloatTy, IntTy, Label, LitKind, TraitObjectSyntax, UintTy};
pub use rustc_ast::{BorrowKind, ImplPolarity, IsAuto};
pub use rustc_ast::{BindingAnnotation, BorrowKind, ByRef, ImplPolarity, IsAuto};
pub use rustc_ast::{CaptureBy, Movability, Mutability};
use rustc_ast::{InlineAsmOptions, InlineAsmTemplatePiece};
use rustc_data_structures::fingerprint::Fingerprint;
@ -1044,30 +1044,6 @@ pub struct PatField<'hir> {
pub span: Span,
}
/// Explicit binding annotations given in the HIR for a binding. Note
/// that this is not the final binding *mode* that we infer after type
/// inference.
#[derive(Copy, Clone, PartialEq, Encodable, Debug, HashStable_Generic)]
pub enum BindingAnnotation {
/// No binding annotation given: this means that the final binding mode
/// will depend on whether we have skipped through a `&` reference
/// when matching. For example, the `x` in `Some(x)` will have binding
/// mode `None`; if you do `let Some(x) = &Some(22)`, it will
/// ultimately be inferred to be by-reference.
///
/// Note that implicit reference skipping is not implemented yet (#42640).
Unannotated,
/// Annotated with `mut x` -- could be either ref or not, similar to `None`.
Mutable,
/// Annotated as `ref`, like `ref x`
Ref,
/// Annotated as `ref mut x`.
RefMut,
}
#[derive(Copy, Clone, PartialEq, Encodable, Debug, HashStable_Generic)]
pub enum RangeEnd {
Included,

13
compiler/rustc_hir/src/pat_util.rs
View File

@ -1,6 +1,6 @@
use crate::def::{CtorOf, DefKind, Res};
use crate::def_id::DefId;
use crate::hir::{self, HirId, PatKind};
use crate::hir::{self, BindingAnnotation, ByRef, HirId, PatKind};
use rustc_data_structures::fx::FxHashSet;
use rustc_span::hygiene::DesugaringKind;
use rustc_span::symbol::Ident;
@ -93,12 +93,7 @@ impl hir::Pat<'_> {
pub fn simple_ident(&self) -> Option<Ident> {
match self.kind {
PatKind::Binding(
hir::BindingAnnotation::Unannotated | hir::BindingAnnotation::Mutable,
_,
ident,
None,
) => Some(ident),
PatKind::Binding(BindingAnnotation(ByRef::No, _), _, ident, None) => Some(ident),
_ => None,
}
}
@ -135,11 +130,11 @@ impl hir::Pat<'_> {
pub fn contains_explicit_ref_binding(&self) -> Option<hir::Mutability> {
let mut result = None;
self.each_binding(|annotation, _, _, _| match annotation {
hir::BindingAnnotation::Ref => match result {
hir::BindingAnnotation::REF => match result {
None | Some(hir::Mutability::Not) => result = Some(hir::Mutability::Not),
_ => {}
},
hir::BindingAnnotation::RefMut => result = Some(hir::Mutability::Mut),
hir::BindingAnnotation::REF_MUT => result = Some(hir::Mutability::Mut),
_ => {}
});
result

24
compiler/rustc_hir_pretty/src/lib.rs
View File

@ -9,7 +9,9 @@ use rustc_ast_pretty::pp::{self, Breaks};
use rustc_ast_pretty::pprust::{Comments, PrintState};
use rustc_hir as hir;
use rustc_hir::LifetimeParamKind;
use rustc_hir::{GenericArg, GenericParam, GenericParamKind, Node, Term};
use rustc_hir::{
BindingAnnotation, ByRef, GenericArg, GenericParam, GenericParamKind, Mutability, Node, Term,
};
use rustc_hir::{GenericBound, PatKind, RangeEnd, TraitBoundModifier};
use rustc_span::source_map::SourceMap;
use rustc_span::symbol::{kw, Ident, IdentPrinter, Symbol};
@ -1743,20 +1745,12 @@ impl<'a> State<'a> {
// is that it doesn't matter
match pat.kind {
PatKind::Wild => self.word("_"),
PatKind::Binding(binding_mode, _, ident, sub) => {
match binding_mode {
hir::BindingAnnotation::Ref => {
self.word_nbsp("ref");
self.print_mutability(hir::Mutability::Not, false);
}
hir::BindingAnnotation::RefMut => {
self.word_nbsp("ref");
self.print_mutability(hir::Mutability::Mut, false);
}
hir::BindingAnnotation::Unannotated => {}
hir::BindingAnnotation::Mutable => {
self.word_nbsp("mut");
}
PatKind::Binding(BindingAnnotation(by_ref, mutbl), _, ident, sub) => {
if by_ref == ByRef::Yes {
self.word_nbsp("ref");
}
if mutbl == Mutability::Mut {
self.word_nbsp("mut");
}
self.print_ident(ident);
if let Some(p) = sub {

13
compiler/rustc_lint/src/builtin.rs
View File

@ -259,17 +259,8 @@ impl<'tcx> LateLintPass<'tcx> for NonShorthandFieldPatterns {
== Some(cx.tcx.field_index(fieldpat.hir_id, cx.typeck_results()))
{
cx.struct_span_lint(NON_SHORTHAND_FIELD_PATTERNS, fieldpat.span, |lint| {
let binding = match binding_annot {
hir::BindingAnnotation::Unannotated => None,
hir::BindingAnnotation::Mutable => Some("mut"),
hir::BindingAnnotation::Ref => Some("ref"),
hir::BindingAnnotation::RefMut => Some("ref mut"),
};
let suggested_ident = if let Some(binding) = binding {
format!("{} {}", binding, ident)
} else {
ident.to_string()
};
let suggested_ident =
format!("{}{}", binding_annot.prefix_str(), ident);
lint.build(fluent::lint::builtin_non_shorthand_field_patterns)
.set_arg("ident", ident.clone())
.span_suggestion(

6
compiler/rustc_lint/src/unused.rs
View File

@ -751,7 +751,7 @@ impl UnusedParens {
avoid_or: bool,
avoid_mut: bool,
) {
use ast::{BindingMode, Mutability, PatKind};
use ast::{BindingAnnotation, PatKind};
if let PatKind::Paren(inner) = &value.kind {
match inner.kind {
@ -763,7 +763,9 @@ impl UnusedParens {
// Avoid `p0 | .. | pn` if we should.
PatKind::Or(..) if avoid_or => return,
// Avoid `mut x` and `mut x @ p` if we should:
PatKind::Ident(BindingMode::ByValue(Mutability::Mut), ..) if avoid_mut => return,
PatKind::Ident(BindingAnnotation::MUT, ..) if avoid_mut => {
return;
}
// Otherwise proceed with linting.
_ => {}
}

14
compiler/rustc_middle/src/ty/binding.rs
View File

@ -1,6 +1,4 @@
use rustc_hir::BindingAnnotation;
use rustc_hir::BindingAnnotation::*;
use rustc_hir::Mutability;
use rustc_hir::{BindingAnnotation, ByRef, Mutability};
#[derive(Clone, PartialEq, TyEncodable, TyDecodable, Debug, Copy, HashStable)]
pub enum BindingMode {
@ -11,12 +9,10 @@ pub enum BindingMode {
TrivialTypeTraversalAndLiftImpls! { BindingMode, }
impl BindingMode {
pub fn convert(ba: BindingAnnotation) -> BindingMode {
match ba {
Unannotated => BindingMode::BindByValue(Mutability::Not),
Mutable => BindingMode::BindByValue(Mutability::Mut),
Ref => BindingMode::BindByReference(Mutability::Not),
RefMut => BindingMode::BindByReference(Mutability::Mut),
pub fn convert(BindingAnnotation(by_ref, mutbl): BindingAnnotation) -> BindingMode {
match by_ref {
ByRef::No => BindingMode::BindByValue(mutbl),
ByRef::Yes => BindingMode::BindByReference(mutbl),
}
}
}

10
compiler/rustc_parse/src/parser/diagnostics.rs
View File

@ -10,9 +10,9 @@ use rustc_ast::ptr::P;
use rustc_ast::token::{self, Delimiter, Lit, LitKind, TokenKind};
use rustc_ast::util::parser::AssocOp;
use rustc_ast::{
AngleBracketedArg, AngleBracketedArgs, AnonConst, AttrVec, BinOpKind, BindingMode, Block,
BlockCheckMode, Expr, ExprKind, GenericArg, Generics, Item, ItemKind, Mutability, Param, Pat,
PatKind, Path, PathSegment, QSelf, Ty, TyKind,
AngleBracketedArg, AngleBracketedArgs, AnonConst, AttrVec, BinOpKind, BindingAnnotation, Block,
BlockCheckMode, Expr, ExprKind, GenericArg, Generics, Item, ItemKind, Param, Pat, PatKind,
Path, PathSegment, QSelf, Ty, TyKind,
};
use rustc_ast_pretty::pprust;
use rustc_data_structures::fx::FxHashSet;
@ -37,7 +37,7 @@ const TURBOFISH_SUGGESTION_STR: &str =
pub(super) fn dummy_arg(ident: Ident) -> Param {
let pat = P(Pat {
id: ast::DUMMY_NODE_ID,
kind: PatKind::Ident(BindingMode::ByValue(Mutability::Not), ident, None),
kind: PatKind::Ident(BindingAnnotation::NONE, ident, None),
span: ident.span,
tokens: None,
});
@ -2961,7 +2961,7 @@ impl<'a> Parser<'a> {
}
_ => {}
},
PatKind::Ident(BindingMode::ByValue(Mutability::Not), ident, None) => {
PatKind::Ident(BindingAnnotation::NONE, ident, None) => {
match &first_pat.kind {
PatKind::Ident(_, old_ident, _) => {
let path = PatKind::Path(

4
compiler/rustc_parse/src/parser/item.rs
View File

@ -8,7 +8,7 @@ use rustc_ast::token::{self, Delimiter, TokenKind};
use rustc_ast::tokenstream::{DelimSpan, TokenStream, TokenTree};
use rustc_ast::{self as ast, AttrVec, Attribute, DUMMY_NODE_ID};
use rustc_ast::{Async, Const, Defaultness, IsAuto, Mutability, Unsafe, UseTree, UseTreeKind};
use rustc_ast::{BindingMode, Block, FnDecl, FnSig, Param, SelfKind};
use rustc_ast::{BindingAnnotation, Block, FnDecl, FnSig, Param, SelfKind};
use rustc_ast::{EnumDef, FieldDef, Generics, TraitRef, Ty, TyKind, Variant, VariantData};
use rustc_ast::{FnHeader, ForeignItem, Path, PathSegment, Visibility, VisibilityKind};
use rustc_ast::{MacArgs, MacCall, MacDelimiter};
@ -2322,7 +2322,7 @@ impl<'a> Parser<'a> {
match ty {
Ok(ty) => {
let ident = Ident::new(kw::Empty, this.prev_token.span);
let bm = BindingMode::ByValue(Mutability::Not);
let bm = BindingAnnotation::NONE;
let pat = this.mk_pat_ident(ty.span, bm, ident);
(pat, ty)
}

42
compiler/rustc_parse/src/parser/pat.rs
View File

@ -4,8 +4,8 @@ use rustc_ast::mut_visit::{noop_visit_pat, MutVisitor};
use rustc_ast::ptr::P;
use rustc_ast::token::{self, Delimiter};
use rustc_ast::{
self as ast, AttrVec, BindingMode, Expr, ExprKind, MacCall, Mutability, Pat, PatField, PatKind,
Path, QSelf, RangeEnd, RangeSyntax,
self as ast, AttrVec, BindingAnnotation, ByRef, Expr, ExprKind, MacCall, Mutability, Pat,
PatField, PatKind, Path, QSelf, RangeEnd, RangeSyntax,
};
use rustc_ast_pretty::pprust;
use rustc_errors::{struct_span_err, Applicability, DiagnosticBuilder, ErrorGuaranteed, PResult};
@ -353,7 +353,7 @@ impl<'a> Parser<'a> {
} else if self.eat_keyword(kw::Ref) {
// Parse ref ident @ pat / ref mut ident @ pat
let mutbl = self.parse_mutability();
self.parse_pat_ident(BindingMode::ByRef(mutbl))?
self.parse_pat_ident(BindingAnnotation(ByRef::Yes, mutbl))?
} else if self.eat_keyword(kw::Box) {
self.parse_pat_box()?
} else if self.check_inline_const(0) {
@ -369,7 +369,7 @@ impl<'a> Parser<'a> {
// Parse `ident @ pat`
// This can give false positives and parse nullary enums,
// they are dealt with later in resolve.
self.parse_pat_ident(BindingMode::ByValue(Mutability::Not))?
self.parse_pat_ident(BindingAnnotation::NONE)?
} else if self.is_start_of_pat_with_path() {
// Parse pattern starting with a path
let (qself, path) = if self.eat_lt() {
@ -578,7 +578,8 @@ impl<'a> Parser<'a> {
let mut pat = self.parse_pat_no_top_alt(Some("identifier"))?;
// If we don't have `mut $ident (@ pat)?`, error.
if let PatKind::Ident(BindingMode::ByValue(m @ Mutability::Not), ..) = &mut pat.kind {
if let PatKind::Ident(BindingAnnotation(ByRef::No, m @ Mutability::Not), ..) = &mut pat.kind
{
// Don't recurse into the subpattern.
// `mut` on the outer binding doesn't affect the inner bindings.
*m = Mutability::Mut;
@ -604,7 +605,7 @@ impl<'a> Parser<'a> {
)
.emit();
self.parse_pat_ident(BindingMode::ByRef(Mutability::Mut))
self.parse_pat_ident(BindingAnnotation::REF_MUT)
}
/// Turn all by-value immutable bindings in a pattern into mutable bindings.
@ -613,7 +614,8 @@ impl<'a> Parser<'a> {
struct AddMut(bool);
impl MutVisitor for AddMut {
fn visit_pat(&mut self, pat: &mut P<Pat>) {
if let PatKind::Ident(BindingMode::ByValue(m @ Mutability::Not), ..) = &mut pat.kind
if let PatKind::Ident(BindingAnnotation(ByRef::No, m @ Mutability::Not), ..) =
&mut pat.kind
{
self.0 = true;
*m = Mutability::Mut;
@ -838,7 +840,7 @@ impl<'a> Parser<'a> {
/// Parses `ident` or `ident @ pat`.
/// Used by the copy foo and ref foo patterns to give a good
/// error message when parsing mistakes like `ref foo(a, b)`.
fn parse_pat_ident(&mut self, binding_mode: BindingMode) -> PResult<'a, PatKind> {
fn parse_pat_ident(&mut self, binding_annotation: BindingAnnotation) -> PResult<'a, PatKind> {
let ident = self.parse_ident()?;
let sub = if self.eat(&token::At) {
Some(self.parse_pat_no_top_alt(Some("binding pattern"))?)
@ -856,7 +858,7 @@ impl<'a> Parser<'a> {
.struct_span_err(self.prev_token.span, "expected identifier, found enum pattern"));
}
Ok(PatKind::Ident(binding_mode, ident, sub))
Ok(PatKind::Ident(binding_annotation, ident, sub))
}
/// Parse a struct ("record") pattern (e.g. `Foo { ... }` or `Foo::Bar { ... }`).
@ -936,11 +938,7 @@ impl<'a> Parser<'a> {
None
};
Ok(PatKind::Ident(
BindingMode::ByValue(Mutability::Not),
Ident::new(kw::Box, box_span),
sub,
))
Ok(PatKind::Ident(BindingAnnotation::NONE, Ident::new(kw::Box, box_span), sub))
} else {
let pat = self.parse_pat_with_range_pat(false, None)?;
self.sess.gated_spans.gate(sym::box_patterns, box_span.to(self.prev_token.span));
@ -1117,14 +1115,12 @@ impl<'a> Parser<'a> {
let fieldname = self.parse_field_name()?;
hi = self.prev_token.span;
let bind_type = match (is_ref, is_mut) {
(true, true) => BindingMode::ByRef(Mutability::Mut),
(true, false) => BindingMode::ByRef(Mutability::Not),
(false, true) => BindingMode::ByValue(Mutability::Mut),
(false, false) => BindingMode::ByValue(Mutability::Not),
let mutability = match is_mut {
false => Mutability::Not,
true => Mutability::Mut,
};
let fieldpat = self.mk_pat_ident(boxed_span.to(hi), bind_type, fieldname);
let ann = BindingAnnotation(ByRef::from(is_ref), mutability);
let fieldpat = self.mk_pat_ident(boxed_span.to(hi), ann, fieldname);
let subpat =
if is_box { self.mk_pat(lo.to(hi), PatKind::Box(fieldpat)) } else { fieldpat };
(subpat, fieldname, true)
@ -1141,8 +1137,8 @@ impl<'a> Parser<'a> {
})
}
pub(super) fn mk_pat_ident(&self, span: Span, bm: BindingMode, ident: Ident) -> P<Pat> {
self.mk_pat(span, PatKind::Ident(bm, ident, None))
pub(super) fn mk_pat_ident(&self, span: Span, ann: BindingAnnotation, ident: Ident) -> P<Pat> {
self.mk_pat(span, PatKind::Ident(ann, ident, None))
}
pub(super) fn mk_pat(&self, span: Span, kind: PatKind) -> P<Pat> {

2
compiler/rustc_passes/src/naked_functions.rs
View File

@ -76,7 +76,7 @@ fn check_no_patterns(tcx: TyCtxt<'_>, params: &[hir::Param<'_>]) {
for param in params {
match param.pat.kind {
hir::PatKind::Wild
| hir::PatKind::Binding(hir::BindingAnnotation::Unannotated, _, _, None) => {}
| hir::PatKind::Binding(hir::BindingAnnotation::NONE, _, _, None) => {}
_ => {
tcx.sess
.struct_span_err(

14
compiler/rustc_resolve/src/late.rs
View File

@ -20,7 +20,7 @@ use rustc_errors::DiagnosticId;
use rustc_hir::def::Namespace::{self, *};
use rustc_hir::def::{self, CtorKind, DefKind, LifetimeRes, PartialRes, PerNS};
use rustc_hir::def_id::{DefId, LocalDefId, CRATE_DEF_ID};
use rustc_hir::{PrimTy, TraitCandidate};
use rustc_hir::{BindingAnnotation, PrimTy, TraitCandidate};
use rustc_middle::middle::resolve_lifetime::Set1;
use rustc_middle::ty::DefIdTree;
use rustc_middle::{bug, span_bug};
@ -50,7 +50,7 @@ use diagnostics::{
#[derive(Copy, Clone, Debug)]
struct BindingInfo {
span: Span,
binding_mode: BindingMode,
annotation: BindingAnnotation,
}
#[derive(Copy, Clone, PartialEq, Eq, Debug)]
@ -2865,10 +2865,10 @@ impl<'a: 'ast, 'b, 'ast> LateResolutionVisitor<'a, 'b, 'ast> {
pat.walk(&mut |pat| {
match pat.kind {
PatKind::Ident(binding_mode, ident, ref sub_pat)
PatKind::Ident(annotation, ident, ref sub_pat)
if sub_pat.is_some() || self.is_base_res_local(pat.id) =>
{
binding_map.insert(ident, BindingInfo { span: ident.span, binding_mode });
binding_map.insert(ident, BindingInfo { span: ident.span, annotation });
}
PatKind::Or(ref ps) => {
// Check the consistency of this or-pattern and
@ -2925,7 +2925,7 @@ impl<'a: 'ast, 'b, 'ast> LateResolutionVisitor<'a, 'b, 'ast> {
binding_error.target.insert(pat_outer.span);
}
Some(binding_outer) => {
if binding_outer.binding_mode != binding_inner.binding_mode {
if binding_outer.annotation != binding_inner.annotation {
// The binding modes in the outer and inner bindings differ.
inconsistent_vars
.entry(name)
@ -3146,14 +3146,14 @@ impl<'a: 'ast, 'b, 'ast> LateResolutionVisitor<'a, 'b, 'ast> {
fn try_resolve_as_non_binding(
&mut self,
pat_src: PatternSource,
bm: BindingMode,
ann: BindingAnnotation,
ident: Ident,
has_sub: bool,
) -> Option<Res> {
// An immutable (no `mut`) by-value (no `ref`) binding pattern without
// a sub pattern (no `@ $pat`) is syntactically ambiguous as it could
// also be interpreted as a path to e.g. a constant, variant, etc.
let is_syntactic_ambiguity = !has_sub && bm == BindingMode::ByValue(Mutability::Not);
let is_syntactic_ambiguity = !has_sub && ann == BindingAnnotation::NONE;
let ls_binding = self.maybe_resolve_ident_in_lexical_scope(ident, ValueNS)?;
let (res, binding) = match ls_binding {

15
compiler/rustc_save_analysis/src/lib.rs
View File

@ -866,23 +866,12 @@ impl<'l> Visitor<'l> for PathCollector<'l> {
hir::PatKind::TupleStruct(ref path, ..) | hir::PatKind::Path(ref path) => {
self.collected_paths.push((p.hir_id, path));
}
hir::PatKind::Binding(bm, _, ident, _) => {
hir::PatKind::Binding(hir::BindingAnnotation(_, mutbl), _, ident, _) => {
debug!(
"PathCollector, visit ident in pat {}: {:?} {:?}",
ident, p.span, ident.span
);
let immut = match bm {
// Even if the ref is mut, you can't change the ref, only
// the data pointed at, so showing the initialising expression
// is still worthwhile.
hir::BindingAnnotation::Unannotated | hir::BindingAnnotation::Ref => {
hir::Mutability::Not
}
hir::BindingAnnotation::Mutable | hir::BindingAnnotation::RefMut => {
hir::Mutability::Mut
}
};
self.collected_idents.push((p.hir_id, ident, immut));
self.collected_idents.push((p.hir_id, ident, mutbl));
}
_ => {}
}

2
compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
View File

@ -774,7 +774,7 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> {
// Get the local name of this closure. This can be inaccurate because
// of the possibility of reassignment, but this should be good enough.
match &kind {
hir::PatKind::Binding(hir::BindingAnnotation::Unannotated, _, ident, None) => {
hir::PatKind::Binding(hir::BindingAnnotation::NONE, _, ident, None) => {
Some(ident.name)
}
_ => {

6
compiler/rustc_typeck/src/check/pat.rs
View File

@ -569,7 +569,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
) -> Ty<'tcx> {
// Determine the binding mode...
let bm = match ba {
hir::BindingAnnotation::Unannotated => def_bm,
hir::BindingAnnotation::NONE => def_bm,
_ => BindingMode::convert(ba),
};
// ...and store it in a side table:
@ -655,7 +655,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
ba: hir::BindingAnnotation,
) {
match (expected.kind(), actual.kind(), ba) {
(ty::Ref(_, inner_ty, _), _, hir::BindingAnnotation::Unannotated)
(ty::Ref(_, inner_ty, _), _, hir::BindingAnnotation::NONE)
if self.can_eq(self.param_env, *inner_ty, actual).is_ok() =>
{
err.span_suggestion_verbose(
@ -665,7 +665,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
Applicability::MaybeIncorrect,
);
}
(_, ty::Ref(_, inner_ty, _), hir::BindingAnnotation::Ref)
(_, ty::Ref(_, inner_ty, _), hir::BindingAnnotation::REF)
if self.can_eq(self.param_env, expected, *inner_ty).is_ok() =>
{
err.span_suggestion_verbose(

8
compiler/rustc_typeck/src/check/region.rs
View File

@ -587,8 +587,7 @@ fn resolve_local<'tcx>(
// & expression, and its lifetime would be extended to the end of the block (due
// to a different rule, not the below code).
match pat.kind {
PatKind::Binding(hir::BindingAnnotation::Ref, ..)
| PatKind::Binding(hir::BindingAnnotation::RefMut, ..) => true,
PatKind::Binding(hir::BindingAnnotation(hir::ByRef::Yes, _), ..) => true,
PatKind::Struct(_, ref field_pats, _) => {
field_pats.iter().any(|fp| is_binding_pat(&fp.pat))
@ -607,10 +606,7 @@ fn resolve_local<'tcx>(
PatKind::Box(ref subpat) => is_binding_pat(&subpat),
PatKind::Ref(_, _)
| PatKind::Binding(
hir::BindingAnnotation::Unannotated | hir::BindingAnnotation::Mutable,
..,
)
| PatKind::Binding(hir::BindingAnnotation(hir::ByRef::No, _), ..)
| PatKind::Wild
| PatKind::Path(_)
| PatKind::Lit(_)

2
src/tools/clippy/clippy_lints/src/dereference.rs
View File

@ -503,7 +503,7 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing {
}
fn check_pat(&mut self, cx: &LateContext<'tcx>, pat: &'tcx Pat<'_>) {
if let PatKind::Binding(BindingAnnotation::Ref, id, name, _) = pat.kind {
if let PatKind::Binding(BindingAnnotation::REF, id, name, _) = pat.kind {
if let Some(opt_prev_pat) = self.ref_locals.get_mut(&id) {
// This binding id has been seen before. Add this pattern to the list of changes.
if let Some(prev_pat) = opt_prev_pat {

2
src/tools/clippy/clippy_lints/src/explicit_write.rs
View File

@ -128,7 +128,7 @@ fn look_in_block<'tcx, 'hir>(cx: &LateContext<'tcx>, kind: &'tcx ExprKind<'hir>)
if let Some(Node::Pat(res_pat)) = cx.tcx.hir().find(expr_res);
// Find id of the local we found in the block
if let PatKind::Binding(BindingAnnotation::Unannotated, local_hir_id, _ident, None) = local.pat.kind;
if let PatKind::Binding(BindingAnnotation::NONE, local_hir_id, _ident, None) = local.pat.kind;
// If those two are the same hir id
if res_pat.hir_id == local_hir_id;

16
src/tools/clippy/clippy_lints/src/index_refutable_slice.rs
View File

@ -95,12 +95,14 @@ fn find_slice_values(cx: &LateContext<'_>, pat: &hir::Pat<'_>) -> FxIndexMap<hir
let mut removed_pat: FxHashSet<hir::HirId> = FxHashSet::default();
let mut slices: FxIndexMap<hir::HirId, SliceLintInformation> = FxIndexMap::default();
pat.walk_always(|pat| {
if let hir::PatKind::Binding(binding, value_hir_id, ident, sub_pat) = pat.kind {
// We'll just ignore mut and ref mut for simplicity sake right now
if let hir::BindingAnnotation::Mutable | hir::BindingAnnotation::RefMut = binding {
return;
}
// We'll just ignore mut and ref mut for simplicity sake right now
if let hir::PatKind::Binding(
hir::BindingAnnotation(by_ref, hir::Mutability::Not),
value_hir_id,
ident,
sub_pat,
) = pat.kind
{
// This block catches bindings with sub patterns. It would be hard to build a correct suggestion
// for them and it's likely that the user knows what they are doing in such a case.
if removed_pat.contains(&value_hir_id) {
@ -116,7 +118,7 @@ fn find_slice_values(cx: &LateContext<'_>, pat: &hir::Pat<'_>) -> FxIndexMap<hir
if let ty::Slice(inner_ty) | ty::Array(inner_ty, _) = bound_ty.peel_refs().kind() {
// The values need to use the `ref` keyword if they can't be copied.
// This will need to be adjusted if the lint want to support mutable access in the future
let src_is_ref = bound_ty.is_ref() && binding != hir::BindingAnnotation::Ref;
let src_is_ref = bound_ty.is_ref() && by_ref != hir::ByRef::Yes;
let needs_ref = !(src_is_ref || is_copy(cx, *inner_ty));
let slice_info = slices

4
src/tools/clippy/clippy_lints/src/let_if_seq.rs
View File

@ -4,7 +4,7 @@ use clippy_utils::{path_to_local_id, visitors::is_local_used};
use if_chain::if_chain;
use rustc_errors::Applicability;
use rustc_hir as hir;
use rustc_hir::BindingAnnotation;
use rustc_hir::{BindingAnnotation, Mutability};
use rustc_lint::{LateContext, LateLintPass};
use rustc_session::{declare_lint_pass, declare_tool_lint};
@ -98,7 +98,7 @@ impl<'tcx> LateLintPass<'tcx> for LetIfSeq {
};
let mutability = match mode {
BindingAnnotation::RefMut | BindingAnnotation::Mutable => "<mut> ",
BindingAnnotation(_, Mutability::Mut) => "<mut> ",
_ => "",
};

2
src/tools/clippy/clippy_lints/src/loops/manual_find.rs
View File

@ -106,7 +106,7 @@ fn get_binding(pat: &Pat<'_>) -> Option<HirId> {
hir_id = None;
return;
}
if let BindingAnnotation::Unannotated = annotation {
if let BindingAnnotation::NONE = annotation {
hir_id = Some(id);
}
});

2
src/tools/clippy/clippy_lints/src/loops/mut_range_bound.rs
View File

@ -44,7 +44,7 @@ fn check_for_mutability(cx: &LateContext<'_>, bound: &Expr<'_>) -> Option<HirId>
if_chain! {
if let Some(hir_id) = path_to_local(bound);
if let Node::Pat(pat) = cx.tcx.hir().get(hir_id);
if let PatKind::Binding(BindingAnnotation::Mutable, ..) = pat.kind;
if let PatKind::Binding(BindingAnnotation::MUT, ..) = pat.kind;
then {
return Some(hir_id);
}

4
src/tools/clippy/clippy_lints/src/loops/same_item_push.rs
View File

@ -7,7 +7,7 @@ use if_chain::if_chain;
use rustc_data_structures::fx::FxHashSet;
use rustc_hir::def::{DefKind, Res};
use rustc_hir::intravisit::{walk_expr, Visitor};
use rustc_hir::{BindingAnnotation, Block, Expr, ExprKind, HirId, Node, Pat, PatKind, Stmt, StmtKind};
use rustc_hir::{BindingAnnotation, Block, Expr, ExprKind, HirId, Mutability, Node, Pat, PatKind, Stmt, StmtKind};
use rustc_lint::LateContext;
use rustc_span::symbol::sym;
use std::iter::Iterator;
@ -65,7 +65,7 @@ pub(super) fn check<'tcx>(
if_chain! {
if let Node::Pat(pat) = node;
if let PatKind::Binding(bind_ann, ..) = pat.kind;
if !matches!(bind_ann, BindingAnnotation::RefMut | BindingAnnotation::Mutable);
if !matches!(bind_ann, BindingAnnotation(_, Mutability::Mut));
let parent_node = cx.tcx.hir().get_parent_node(hir_id);
if let Some(Node::Local(parent_let_expr)) = cx.tcx.hir().find(parent_node);
if let Some(init) = parent_let_expr.init;

2
src/tools/clippy/clippy_lints/src/matches/manual_map.rs
View File

@ -165,7 +165,7 @@ fn check<'tcx>(
}
// `ref` and `ref mut` annotations were handled earlier.
let annotation = if matches!(annotation, BindingAnnotation::Mutable) {
let annotation = if matches!(annotation, BindingAnnotation::MUT) {
"mut "
} else {
""

20
src/tools/clippy/clippy_lints/src/matches/match_as_ref.rs
View File

@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg;
use clippy_utils::source::snippet_with_applicability;
use clippy_utils::{is_lang_ctor, peel_blocks};
use rustc_errors::Applicability;
use rustc_hir::{Arm, BindingAnnotation, Expr, ExprKind, LangItem, PatKind, QPath};
use rustc_hir::{Arm, BindingAnnotation, ByRef, Expr, ExprKind, LangItem, Mutability, PatKind, QPath};
use rustc_lint::LateContext;
use rustc_middle::ty;
@ -10,18 +10,17 @@ use super::MATCH_AS_REF;
pub(crate) fn check(cx: &LateContext<'_>, ex: &Expr<'_>, arms: &[Arm<'_>], expr: &Expr<'_>) {
if arms.len() == 2 && arms[0].guard.is_none() && arms[1].guard.is_none() {
let arm_ref: Option<BindingAnnotation> = if is_none_arm(cx, &arms[0]) {
let arm_ref_mut = if is_none_arm(cx, &arms[0]) {
is_ref_some_arm(cx, &arms[1])
} else if is_none_arm(cx, &arms[1]) {
is_ref_some_arm(cx, &arms[0])
} else {
None
};
if let Some(rb) = arm_ref {
let suggestion = if rb == BindingAnnotation::Ref {
"as_ref"
} else {
"as_mut"
if let Some(rb) = arm_ref_mut {
let suggestion = match rb {
Mutability::Not => "as_ref",
Mutability::Mut => "as_mut",
};
let output_ty = cx.typeck_results().expr_ty(expr);
@ -66,19 +65,18 @@ fn is_none_arm(cx: &LateContext<'_>, arm: &Arm<'_>) -> bool {
}
// Checks if arm has the form `Some(ref v) => Some(v)` (checks for `ref` and `ref mut`)
fn is_ref_some_arm(cx: &LateContext<'_>, arm: &Arm<'_>) -> Option<BindingAnnotation> {
fn is_ref_some_arm(cx: &LateContext<'_>, arm: &Arm<'_>) -> Option<Mutability> {
if_chain! {
if let PatKind::TupleStruct(ref qpath, [first_pat, ..], _) = arm.pat.kind;
if is_lang_ctor(cx, qpath, LangItem::OptionSome);
if let PatKind::Binding(rb, .., ident, _) = first_pat.kind;
if rb == BindingAnnotation::Ref || rb == BindingAnnotation::RefMut;
if let PatKind::Binding(BindingAnnotation(ByRef::Yes, mutabl), .., ident, _) = first_pat.kind;
if let ExprKind::Call(e, [arg]) = peel_blocks(arm.body).kind;
if let ExprKind::Path(ref some_path) = e.kind;
if is_lang_ctor(cx, some_path, LangItem::OptionSome);
if let ExprKind::Path(QPath::Resolved(_, path2)) = arg.kind;
if path2.segments.len() == 1 && ident.name == path2.segments[0].ident.name;
then {
return Some(rb)
return Some(mutabl)
}
}
None

5
src/tools/clippy/clippy_lints/src/matches/needless_match.rs
View File

@ -8,7 +8,7 @@ use clippy_utils::{
};
use rustc_errors::Applicability;
use rustc_hir::LangItem::OptionNone;
use rustc_hir::{Arm, BindingAnnotation, Expr, ExprKind, FnRetTy, Guard, Node, Pat, PatKind, Path, QPath};
use rustc_hir::{Arm, BindingAnnotation, ByRef, Expr, ExprKind, FnRetTy, Guard, Node, Pat, PatKind, Path, QPath};
use rustc_lint::LateContext;
use rustc_span::sym;
use rustc_typeck::hir_ty_to_ty;
@ -189,8 +189,7 @@ fn pat_same_as_expr(pat: &Pat<'_>, expr: &Expr<'_>) -> bool {
},
)),
) => {
return !matches!(annot, BindingAnnotation::Ref | BindingAnnotation::RefMut)
&& pat_ident.name == first_seg.ident.name;
return !matches!(annot, BindingAnnotation(ByRef::Yes, _)) && pat_ident.name == first_seg.ident.name;
},
// Example: `Custom::TypeA => Custom::TypeB`, or `None => None`
(PatKind::Path(QPath::Resolved(_, p_path)), ExprKind::Path(QPath::Resolved(_, e_path))) => {

2
src/tools/clippy/clippy_lints/src/matches/single_match.rs
View File

@ -175,7 +175,7 @@ fn collect_pat_paths<'a>(acc: &mut Vec<Ty<'a>>, cx: &LateContext<'a>, pat: &Pat<
let p_ty = cx.typeck_results().pat_ty(p);
collect_pat_paths(acc, cx, p, p_ty);
}),
PatKind::TupleStruct(..) | PatKind::Binding(BindingAnnotation::Unannotated, .., None) | PatKind::Path(_) => {
PatKind::TupleStruct(..) | PatKind::Binding(BindingAnnotation::NONE, .., None) | PatKind::Path(_) => {
acc.push(ty);
},
_ => {},

9
src/tools/clippy/clippy_lints/src/methods/clone_on_copy.rs
View File

@ -4,7 +4,7 @@ use clippy_utils::source::snippet_with_context;
use clippy_utils::sugg;
use clippy_utils::ty::is_copy;
use rustc_errors::Applicability;
use rustc_hir::{BindingAnnotation, Expr, ExprKind, MatchSource, Node, PatKind, QPath};
use rustc_hir::{BindingAnnotation, ByRef, Expr, ExprKind, MatchSource, Node, PatKind, QPath};
use rustc_lint::LateContext;
use rustc_middle::ty::{self, adjustment::Adjust};
use rustc_span::symbol::{sym, Symbol};
@ -101,12 +101,7 @@ pub(super) fn check(
_ => false,
},
// local binding capturing a reference
Some(Node::Local(l))
if matches!(
l.pat.kind,
PatKind::Binding(BindingAnnotation::Ref | BindingAnnotation::RefMut, ..)
) =>
{
Some(Node::Local(l)) if matches!(l.pat.kind, PatKind::Binding(BindingAnnotation(ByRef::Yes, _), ..)) => {
return;
},
_ => false,

2
src/tools/clippy/clippy_lints/src/methods/iter_skip_next.rs
View File

@ -24,7 +24,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, recv: &hir::Expr
if let Some(id) = path_to_local(recv);
if let Node::Pat(pat) = cx.tcx.hir().get(id);
if let PatKind::Binding(ann, _, _, _) = pat.kind;
if ann != BindingAnnotation::Mutable;
if ann != BindingAnnotation::MUT;
then {
application = Applicability::Unspecified;
diag.span_help(

4
src/tools/clippy/clippy_lints/src/methods/map_clone.rs
View File

@ -33,13 +33,13 @@ pub(super) fn check<'tcx>(
let closure_expr = peel_blocks(&closure_body.value);
match closure_body.params[0].pat.kind {
hir::PatKind::Ref(inner, hir::Mutability::Not) => if let hir::PatKind::Binding(
hir::BindingAnnotation::Unannotated, .., name, None
hir::BindingAnnotation::NONE, .., name, None
) = inner.kind {
if ident_eq(name, closure_expr) {
lint_explicit_closure(cx, e.span, recv.span, true, msrv);
}
},
hir::PatKind::Binding(hir::BindingAnnotation::Unannotated, .., name, None) => {
hir::PatKind::Binding(hir::BindingAnnotation::NONE, .., name, None) => {
match closure_expr.kind {
hir::ExprKind::Unary(hir::UnOp::Deref, inner) => {
if ident_eq(name, inner) {

11
src/tools/clippy/clippy_lints/src/methods/str_splitn.rs
View File

@ -130,7 +130,7 @@ fn check_manual_split_once_indirect(
let ctxt = expr.span.ctxt();
let mut parents = cx.tcx.hir().parent_iter(expr.hir_id);
if let (_, Node::Local(local)) = parents.next()?
&& let PatKind::Binding(BindingAnnotation::Mutable, iter_binding_id, iter_ident, None) = local.pat.kind
&& let PatKind::Binding(BindingAnnotation::MUT, iter_binding_id, iter_ident, None) = local.pat.kind
&& let (iter_stmt_id, Node::Stmt(_)) = parents.next()?
&& let (_, Node::Block(enclosing_block)) = parents.next()?
@ -212,11 +212,10 @@ fn indirect_usage<'tcx>(
ctxt: SyntaxContext,
) -> Option<IndirectUsage<'tcx>> {
if let StmtKind::Local(Local {
pat:
Pat {
kind: PatKind::Binding(BindingAnnotation::Unannotated, _, ident, None),
..
},
pat: Pat {
kind: PatKind::Binding(BindingAnnotation::NONE, _, ident, None),
..
},
init: Some(init_expr),
hir_id: local_hir_id,
..

11
src/tools/clippy/clippy_lints/src/misc.rs
View File

@ -5,8 +5,8 @@ use rustc_ast::ast::LitKind;
use rustc_errors::Applicability;
use rustc_hir::intravisit::FnKind;
use rustc_hir::{
self as hir, def, BinOpKind, BindingAnnotation, Body, Expr, ExprKind, FnDecl, HirId, Mutability, PatKind, Stmt,
StmtKind, TyKind,
self as hir, def, BinOpKind, BindingAnnotation, Body, ByRef, Expr, ExprKind, FnDecl, HirId, Mutability, PatKind,
Stmt, StmtKind, TyKind,
};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::lint::in_external_macro;
@ -146,7 +146,7 @@ impl<'tcx> LateLintPass<'tcx> for MiscLints {
return;
}
for arg in iter_input_pats(decl, body) {
if let PatKind::Binding(BindingAnnotation::Ref | BindingAnnotation::RefMut, ..) = arg.pat.kind {
if let PatKind::Binding(BindingAnnotation(ByRef::Yes, _), ..) = arg.pat.kind {
span_lint(
cx,
TOPLEVEL_REF_ARG,
@ -162,9 +162,8 @@ impl<'tcx> LateLintPass<'tcx> for MiscLints {
if_chain! {
if !in_external_macro(cx.tcx.sess, stmt.span);
if let StmtKind::Local(local) = stmt.kind;
if let PatKind::Binding(an, .., name, None) = local.pat.kind;
if let PatKind::Binding(BindingAnnotation(ByRef::Yes, mutabl), .., name, None) = local.pat.kind;
if let Some(init) = local.init;
if an == BindingAnnotation::Ref || an == BindingAnnotation::RefMut;
then {
// use the macro callsite when the init span (but not the whole local span)
// comes from an expansion like `vec![1, 2, 3]` in `let ref _ = vec![1, 2, 3];`
@ -173,7 +172,7 @@ impl<'tcx> LateLintPass<'tcx> for MiscLints {
} else {
Sugg::hir(cx, init, "..")
};
let (mutopt, initref) = if an == BindingAnnotation::RefMut {
let (mutopt, initref) = if mutabl == Mutability::Mut {
("mut ", sugg_init.mut_addr())
} else {
("", sugg_init.addr())

12
src/tools/clippy/clippy_lints/src/misc_early/redundant_pattern.rs
View File

@ -1,18 +1,12 @@
use clippy_utils::diagnostics::span_lint_and_sugg;
use rustc_ast::ast::{BindingMode, Mutability, Pat, PatKind};
use rustc_ast::ast::{Pat, PatKind};
use rustc_errors::Applicability;
use rustc_lint::EarlyContext;
use super::REDUNDANT_PATTERN;
pub(super) fn check(cx: &EarlyContext<'_>, pat: &Pat) {
if let PatKind::Ident(left, ident, Some(ref right)) = pat.kind {
let left_binding = match left {
BindingMode::ByRef(Mutability::Mut) => "ref mut ",
BindingMode::ByRef(Mutability::Not) => "ref ",
BindingMode::ByValue(..) => "",
};
if let PatKind::Ident(ann, ident, Some(ref right)) = pat.kind {
if let PatKind::Wild = right.kind {
span_lint_and_sugg(
cx,
@ -23,7 +17,7 @@ pub(super) fn check(cx: &EarlyContext<'_>, pat: &Pat) {
ident.name, ident.name,
),
"try",
format!("{}{}", left_binding, ident.name),
format!("{}{}", ann.prefix_str(), ident.name),
Applicability::MachineApplicable,
);
}

6
src/tools/clippy/clippy_lints/src/needless_arbitrary_self_type.rs
View File

@ -1,6 +1,6 @@
use clippy_utils::diagnostics::span_lint_and_sugg;
use if_chain::if_chain;
use rustc_ast::ast::{BindingMode, Lifetime, Mutability, Param, PatKind, Path, TyKind};
use rustc_ast::ast::{BindingAnnotation, ByRef, Lifetime, Mutability, Param, PatKind, Path, TyKind};
use rustc_errors::Applicability;
use rustc_lint::{EarlyContext, EarlyLintPass};
use rustc_session::{declare_lint_pass, declare_tool_lint};
@ -120,14 +120,14 @@ impl EarlyLintPass for NeedlessArbitrarySelfType {
match &p.ty.kind {
TyKind::Path(None, path) => {
if let PatKind::Ident(BindingMode::ByValue(mutbl), _, _) = p.pat.kind {
if let PatKind::Ident(BindingAnnotation(ByRef::No, mutbl), _, _) = p.pat.kind {
check_param_inner(cx, path, p.span.to(p.ty.span), &Mode::Value, mutbl);
}
},
TyKind::Rptr(lifetime, mut_ty) => {
if_chain! {
if let TyKind::Path(None, path) = &mut_ty.ty.kind;
if let PatKind::Ident(BindingMode::ByValue(Mutability::Not), _, _) = p.pat.kind;
if let PatKind::Ident(BindingAnnotation::NONE, _, _) = p.pat.kind;
then {
check_param_inner(cx, path, p.span.to(p.ty.span), &Mode::Ref(*lifetime), mut_ty.mutbl);
}

2
src/tools/clippy/clippy_lints/src/needless_borrowed_ref.rs
View File

@ -59,7 +59,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessBorrowedRef {
if let PatKind::Ref(sub_pat, Mutability::Not) = pat.kind;
// Check sub_pat got a `ref` keyword (excluding `ref mut`).
if let PatKind::Binding(BindingAnnotation::Ref, .., spanned_name, _) = sub_pat.kind;
if let PatKind::Binding(BindingAnnotation::REF, .., spanned_name, _) = sub_pat.kind;
let parent_id = cx.tcx.hir().get_parent_node(pat.hir_id);
if let Some(parent_node) = cx.tcx.hir().find(parent_id);
then {

2
src/tools/clippy/clippy_lints/src/needless_late_init.rs
View File

@ -373,7 +373,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessLateInit {
if let Local {
init: None,
pat: &Pat {
kind: PatKind::Binding(BindingAnnotation::Unannotated, binding_id, _, None),
kind: PatKind::Binding(BindingAnnotation::NONE, binding_id, _, None),
..
},
source: LocalSource::Normal,

10
src/tools/clippy/clippy_lints/src/needless_pass_by_value.rs
View File

@ -8,7 +8,9 @@ use rustc_ast::ast::Attribute;
use rustc_data_structures::fx::FxHashSet;
use rustc_errors::{Applicability, Diagnostic};
use rustc_hir::intravisit::FnKind;
use rustc_hir::{BindingAnnotation, Body, FnDecl, GenericArg, HirId, Impl, ItemKind, Node, PatKind, QPath, TyKind};
use rustc_hir::{
BindingAnnotation, Body, FnDecl, GenericArg, HirId, Impl, ItemKind, Mutability, Node, PatKind, QPath, TyKind,
};
use rustc_hir::{HirIdMap, HirIdSet};
use rustc_infer::infer::TyCtxtInferExt;
use rustc_lint::{LateContext, LateLintPass};
@ -188,13 +190,9 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue {
if !implements_borrow_trait;
if !all_borrowable_trait;
if let PatKind::Binding(mode, canonical_id, ..) = arg.pat.kind;
if let PatKind::Binding(BindingAnnotation(_, Mutability::Not), canonical_id, ..) = arg.pat.kind;
if !moved_vars.contains(&canonical_id);
then {
if mode == BindingAnnotation::Mutable || mode == BindingAnnotation::RefMut {
continue;
}
// Dereference suggestion
let sugg = |diag: &mut Diagnostic| {
if let ty::Adt(def, ..) = ty.kind() {

4
src/tools/clippy/clippy_lints/src/option_if_let_else.rs
View File

@ -130,7 +130,7 @@ fn try_get_option_occurence<'tcx>(
.filter_map(|(id, &c)| none_captures.get(id).map(|&c2| (c, c2)))
.all(|(x, y)| x.is_imm_ref() && y.is_imm_ref());
then {
let capture_mut = if bind_annotation == BindingAnnotation::Mutable { "mut " } else { "" };
let capture_mut = if bind_annotation == BindingAnnotation::MUT { "mut " } else { "" };
let some_body = peel_blocks(if_then);
let none_body = peel_blocks(if_else);
let method_sugg = if eager_or_lazy::switch_to_eager_eval(cx, none_body) { "map_or" } else { "map_or_else" };
@ -138,7 +138,7 @@ fn try_get_option_occurence<'tcx>(
let (as_ref, as_mut) = match &expr.kind {
ExprKind::AddrOf(_, Mutability::Not, _) => (true, false),
ExprKind::AddrOf(_, Mutability::Mut, _) => (false, true),
_ => (bind_annotation == BindingAnnotation::Ref, bind_annotation == BindingAnnotation::RefMut),
_ => (bind_annotation == BindingAnnotation::REF, bind_annotation == BindingAnnotation::REF_MUT),
};
// Check if captures the closure will need conflict with borrows made in the scrutinee.

2
src/tools/clippy/clippy_lints/src/pass_by_ref_or_value.rs
View File

@ -221,7 +221,7 @@ impl<'tcx> PassByRefOrValue {
// if function has a body and parameter is annotated with mut, ignore
if let Some(param) = fn_body.and_then(|body| body.params.get(index)) {
match param.pat.kind {
PatKind::Binding(BindingAnnotation::Unannotated, _, _, _) => {},
PatKind::Binding(BindingAnnotation::NONE, _, _, _) => {},
_ => continue,
}
}

4
src/tools/clippy/clippy_lints/src/ptr.rs
View File

@ -571,7 +571,7 @@ fn check_ptr_arg_usage<'tcx>(cx: &LateContext<'tcx>, body: &'tcx Body<'_>, args:
Some((Node::Stmt(_), _)) => (),
Some((Node::Local(l), _)) => {
// Only trace simple bindings. e.g `let x = y;`
if let PatKind::Binding(BindingAnnotation::Unannotated, id, _, None) = l.pat.kind {
if let PatKind::Binding(BindingAnnotation::NONE, id, _, None) = l.pat.kind {
self.bindings.insert(id, args_idx);
} else {
set_skip_flag();
@ -647,7 +647,7 @@ fn check_ptr_arg_usage<'tcx>(cx: &LateContext<'tcx>, body: &'tcx Body<'_>, args:
.filter_map(|(i, arg)| {
let param = &body.params[arg.idx];
match param.pat.kind {
PatKind::Binding(BindingAnnotation::Unannotated, id, _, None)
PatKind::Binding(BindingAnnotation::NONE, id, _, None)
if !is_lint_allowed(cx, PTR_ARG, param.hir_id) =>
{
Some((id, i))

7
src/tools/clippy/clippy_lints/src/question_mark.rs
View File

@ -9,7 +9,7 @@ use clippy_utils::{
use if_chain::if_chain;
use rustc_errors::Applicability;
use rustc_hir::LangItem::{OptionNone, OptionSome, ResultErr, ResultOk};
use rustc_hir::{BindingAnnotation, Expr, ExprKind, Node, PatKind, PathSegment, QPath};
use rustc_hir::{BindingAnnotation, ByRef, Expr, ExprKind, Node, PatKind, PathSegment, QPath};
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::Ty;
use rustc_session::{declare_lint_pass, declare_tool_lint};
@ -123,7 +123,7 @@ fn check_if_let_some_or_err_and_early_return<'tcx>(cx: &LateContext<'tcx>, expr:
if let Some(higher::IfLet { let_pat, let_expr, if_then, if_else }) = higher::IfLet::hir(cx, expr);
if !is_else_clause(cx.tcx, expr);
if let PatKind::TupleStruct(ref path1, [field], None) = let_pat.kind;
if let PatKind::Binding(annot, bind_id, ident, None) = field.kind;
if let PatKind::Binding(BindingAnnotation(by_ref, _), bind_id, ident, None) = field.kind;
let caller_ty = cx.typeck_results().expr_ty(let_expr);
let if_block = IfBlockType::IfLet(path1, caller_ty, ident.name, let_expr, if_then, if_else);
if (is_early_return(sym::Option, cx, &if_block) && path_to_local_id(peel_blocks(if_then), bind_id))
@ -132,12 +132,11 @@ fn check_if_let_some_or_err_and_early_return<'tcx>(cx: &LateContext<'tcx>, expr:
then {
let mut applicability = Applicability::MachineApplicable;
let receiver_str = snippet_with_applicability(cx, let_expr.span, "..", &mut applicability);
let by_ref = matches!(annot, BindingAnnotation::Ref | BindingAnnotation::RefMut);
let requires_semi = matches!(get_parent_node(cx.tcx, expr.hir_id), Some(Node::Stmt(_)));
let sugg = format!(
"{}{}?{}",
receiver_str,
if by_ref { ".as_ref()" } else { "" },
if by_ref == ByRef::Yes { ".as_ref()" } else { "" },
if requires_semi { ";" } else { "" }
);
span_lint_and_sugg(

2
src/tools/clippy/clippy_lints/src/slow_vector_initialization.rs
View File

@ -99,7 +99,7 @@ impl<'tcx> LateLintPass<'tcx> for SlowVectorInit {
// Matches statements which initializes vectors. For example: `let mut vec = Vec::with_capacity(10)`
if_chain! {
if let StmtKind::Local(local) = stmt.kind;
if let PatKind::Binding(BindingAnnotation::Mutable, local_id, _, None) = local.pat.kind;
if let PatKind::Binding(BindingAnnotation::MUT, local_id, _, None) = local.pat.kind;
if let Some(init) = local.init;
if let Some(len_arg) = Self::is_vec_with_capacity(cx, init);

4
src/tools/clippy/clippy_lints/src/unnested_or_patterns.rs
View File

@ -137,12 +137,12 @@ fn insert_necessary_parens(pat: &mut P<Pat>) {
struct Visitor;
impl MutVisitor for Visitor {
fn visit_pat(&mut self, pat: &mut P<Pat>) {
use ast::{BindingMode::*, Mutability::*};
use ast::BindingAnnotation;
noop_visit_pat(pat, self);
let target = match &mut pat.kind {
// `i @ a | b`, `box a | b`, and `& mut? a | b`.
Ident(.., Some(p)) | Box(p) | Ref(p, _) if matches!(&p.kind, Or(ps) if ps.len() > 1) => p,
Ref(p, Not) if matches!(p.kind, Ident(ByValue(Mut), ..)) => p, // `&(mut x)`
Ref(p, Mutability::Not) if matches!(p.kind, Ident(BindingAnnotation::MUT, ..)) => p, // `&(mut x)`
_ => return,
};
target.kind = Paren(P(take_pat(target)));

14
src/tools/clippy/clippy_lints/src/utils/author.rs
View File

@ -6,7 +6,9 @@ use rustc_ast::ast::{LitFloatType, LitKind};
use rustc_ast::LitIntType;
use rustc_data_structures::fx::FxHashMap;
use rustc_hir as hir;
use rustc_hir::{ArrayLen, Closure, ExprKind, FnRetTy, HirId, Lit, PatKind, QPath, StmtKind, TyKind};
use rustc_hir::{
ArrayLen, BindingAnnotation, Closure, ExprKind, FnRetTy, HirId, Lit, PatKind, QPath, StmtKind, TyKind,
};
use rustc_lint::{LateContext, LateLintPass, LintContext};
use rustc_session::{declare_lint_pass, declare_tool_lint};
use rustc_span::symbol::{Ident, Symbol};
@ -610,10 +612,16 @@ impl<'a, 'tcx> PrintVisitor<'a, 'tcx> {
match pat.value.kind {
PatKind::Wild => kind!("Wild"),
PatKind::Binding(anno, .., name, sub) => {
PatKind::Binding(ann, _, name, sub) => {
bind!(self, name);
opt_bind!(self, sub);
kind!("Binding(BindingAnnotation::{anno:?}, _, {name}, {sub})");
let ann = match ann {
BindingAnnotation::NONE => "NONE",
BindingAnnotation::REF => "REF",
BindingAnnotation::MUT => "MUT",
BindingAnnotation::REF_MUT => "REF_MUT",
};
kind!("Binding(BindingAnnotation::{ann}, _, {name}, {sub})");
self.ident(name);
sub.if_some(|p| self.pat(p));
},

2
src/tools/clippy/clippy_lints/src/vec_init_then_push.rs
View File

@ -157,7 +157,7 @@ impl<'tcx> LateLintPass<'tcx> for VecInitThenPush {
fn check_local(&mut self, cx: &LateContext<'tcx>, local: &'tcx Local<'tcx>) {
if let Some(init_expr) = local.init
&& let PatKind::Binding(BindingAnnotation::Mutable, id, name, None) = local.pat.kind
&& let PatKind::Binding(BindingAnnotation::MUT, id, name, None) = local.pat.kind
&& !in_external_macro(cx.sess(), local.span)
&& let Some(init) = get_vec_init_kind(cx, init_expr)
&& !matches!(init, VecInitKind::WithExprCapacity(_))

11
src/tools/clippy/clippy_utils/src/hir_utils.rs
View File

@ -6,9 +6,9 @@ use rustc_data_structures::fx::FxHasher;
use rustc_hir::def::Res;
use rustc_hir::HirIdMap;
use rustc_hir::{
ArrayLen, BinOpKind, Block, BodyId, Closure, Expr, ExprField, ExprKind, FnRetTy, GenericArg, GenericArgs, Guard,
HirId, InlineAsmOperand, Let, Lifetime, LifetimeName, ParamName, Pat, PatField, PatKind, Path, PathSegment, QPath,
Stmt, StmtKind, Ty, TyKind, TypeBinding,
ArrayLen, BinOpKind, BindingAnnotation, Block, BodyId, Closure, Expr, ExprField, ExprKind, FnRetTy, GenericArg,
GenericArgs, Guard, HirId, InlineAsmOperand, Let, Lifetime, LifetimeName, ParamName, Pat, PatField, PatKind, Path,
PathSegment, QPath, Stmt, StmtKind, Ty, TyKind, TypeBinding,
};
use rustc_lexer::{tokenize, TokenKind};
use rustc_lint::LateContext;
@ -822,8 +822,9 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> {
pub fn hash_pat(&mut self, pat: &Pat<'_>) {
std::mem::discriminant(&pat.kind).hash(&mut self.s);
match pat.kind {
PatKind::Binding(ann, _, _, pat) => {
std::mem::discriminant(&ann).hash(&mut self.s);
PatKind::Binding(BindingAnnotation(by_ref, mutability), _, _, pat) => {
std::mem::discriminant(&by_ref).hash(&mut self.s);
std::mem::discriminant(&mutability).hash(&mut self.s);
if let Some(pat) = pat {
self.hash_pat(pat);
}

2
src/tools/clippy/clippy_utils/src/lib.rs
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@ -192,7 +192,7 @@ pub fn find_binding_init<'tcx>(cx: &LateContext<'tcx>, hir_id: HirId) -> Option<
let hir = cx.tcx.hir();
if_chain! {
if let Some(Node::Pat(pat)) = hir.find(hir_id);
if matches!(pat.kind, PatKind::Binding(BindingAnnotation::Unannotated, ..));
if matches!(pat.kind, PatKind::Binding(BindingAnnotation::NONE, ..));
let parent = hir.get_parent_node(hir_id);
if let Some(Node::Local(local)) = hir.find(parent);
then {

2
src/tools/clippy/tests/ui/author.stdout
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@ -6,7 +6,7 @@ if_chain! {
if match_qpath(qpath, &["char"]);
if let ExprKind::Lit(ref lit) = expr.kind;
if let LitKind::Int(69, LitIntType::Unsuffixed) = lit.node;
if let PatKind::Binding(BindingAnnotation::Unannotated, _, name, None) = local.pat.kind;
if let PatKind::Binding(BindingAnnotation::NONE, _, name, None) = local.pat.kind;
if name.as_str() == "x";
then {
// report your lint here

6
src/tools/clippy/tests/ui/author/blocks.stdout
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@ -5,13 +5,13 @@ if_chain! {
if let Some(init) = local.init;
if let ExprKind::Lit(ref lit) = init.kind;
if let LitKind::Int(42, LitIntType::Signed(IntTy::I32)) = lit.node;
if let PatKind::Binding(BindingAnnotation::Unannotated, _, name, None) = local.pat.kind;
if let PatKind::Binding(BindingAnnotation::NONE, _, name, None) = local.pat.kind;
if name.as_str() == "x";
if let StmtKind::Local(local1) = block.stmts[1].kind;
if let Some(init1) = local1.init;
if let ExprKind::Lit(ref lit1) = init1.kind;
if let LitKind::Float(_, LitFloatType::Suffixed(FloatTy::F32)) = lit1.node;
if let PatKind::Binding(BindingAnnotation::Unannotated, _, name1, None) = local1.pat.kind;
if let PatKind::Binding(BindingAnnotation::NONE, _, name1, None) = local1.pat.kind;
if name1.as_str() == "_t";
if let StmtKind::Semi(e) = block.stmts[2].kind;
if let ExprKind::Unary(UnOp::Neg, inner) = e.kind;
@ -31,7 +31,7 @@ if_chain! {
if let ExprKind::Path(ref qpath) = func.kind;
if match_qpath(qpath, &["String", "new"]);
if args.is_empty();
if let PatKind::Binding(BindingAnnotation::Unannotated, _, name, None) = local.pat.kind;
if let PatKind::Binding(BindingAnnotation::NONE, _, name, None) = local.pat.kind;
if name.as_str() == "expr";
if let Some(trailing_expr) = block.expr;
if let ExprKind::Call(func1, args1) = trailing_expr.kind;

4
src/tools/clippy/tests/ui/author/loop.stdout
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@ -1,6 +1,6 @@
if_chain! {
if let Some(higher::ForLoop { pat: pat, arg: arg, body: body, .. }) = higher::ForLoop::hir(expr);
if let PatKind::Binding(BindingAnnotation::Unannotated, _, name, None) = pat.kind;
if let PatKind::Binding(BindingAnnotation::NONE, _, name, None) = pat.kind;
if name.as_str() == "y";
if let ExprKind::Struct(qpath, fields, None) = arg.kind;
if matches!(qpath, QPath::LangItem(LangItem::Range, _));
@ -17,7 +17,7 @@ if_chain! {
if let Some(init) = local.init;
if let ExprKind::Path(ref qpath1) = init.kind;
if match_qpath(qpath1, &["y"]);
if let PatKind::Binding(BindingAnnotation::Unannotated, _, name1, None) = local.pat.kind;
if let PatKind::Binding(BindingAnnotation::NONE, _, name1, None) = local.pat.kind;
if name1.as_str() == "z";
if block.expr.is_none();
then {

4
src/tools/clippy/tests/ui/author/matches.stdout
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@ -21,7 +21,7 @@ if_chain! {
if let Some(init1) = local1.init;
if let ExprKind::Lit(ref lit4) = init1.kind;
if let LitKind::Int(3, LitIntType::Unsuffixed) = lit4.node;
if let PatKind::Binding(BindingAnnotation::Unannotated, _, name, None) = local1.pat.kind;
if let PatKind::Binding(BindingAnnotation::NONE, _, name, None) = local1.pat.kind;
if name.as_str() == "x";
if let Some(trailing_expr) = block.expr;
if let ExprKind::Path(ref qpath) = trailing_expr.kind;
@ -30,7 +30,7 @@ if_chain! {
if arms[2].guard.is_none();
if let ExprKind::Lit(ref lit5) = arms[2].body.kind;
if let LitKind::Int(1, LitIntType::Unsuffixed) = lit5.node;
if let PatKind::Binding(BindingAnnotation::Unannotated, _, name1, None) = local.pat.kind;
if let PatKind::Binding(BindingAnnotation::NONE, _, name1, None) = local.pat.kind;
if name1.as_str() == "a";
then {
// report your lint here

12
src/tools/rustfmt/src/patterns.rs
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@ -1,4 +1,6 @@
use rustc_ast::ast::{self, BindingMode, Pat, PatField, PatKind, RangeEnd, RangeSyntax};
use rustc_ast::ast::{
self, BindingAnnotation, ByRef, Pat, PatField, PatKind, RangeEnd, RangeSyntax,
};
use rustc_ast::ptr;
use rustc_span::{BytePos, Span};
@ -99,10 +101,10 @@ impl Rewrite for Pat {
write_list(&items, &fmt)
}
PatKind::Box(ref pat) => rewrite_unary_prefix(context, "box ", &**pat, shape),
PatKind::Ident(binding_mode, ident, ref sub_pat) => {
let (prefix, mutability) = match binding_mode {
BindingMode::ByRef(mutability) => ("ref", mutability),
BindingMode::ByValue(mutability) => ("", mutability),
PatKind::Ident(BindingAnnotation(by_ref, mutability), ident, ref sub_pat) => {
let prefix = match by_ref {
ByRef::Yes => "ref",
ByRef::No => "",
};
let mut_infix = format_mutability(mutability).trim();
let id_str = rewrite_ident(context, ident);