) -> Option> {
- noop_filter_map_expr(e, self)
+ noop_filter_map_expr(self, e)
}
fn visit_generic_arg(&mut self, arg: &mut GenericArg) {
- noop_visit_generic_arg(arg, self);
+ walk_generic_arg(self, arg);
}
fn visit_ty(&mut self, t: &mut P) {
- noop_visit_ty(t, self);
+ walk_ty(self, t);
}
fn visit_lifetime(&mut self, l: &mut Lifetime) {
- noop_visit_lifetime(l, self);
+ walk_lifetime(self, l);
}
fn visit_assoc_item_constraint(&mut self, c: &mut AssocItemConstraint) {
- noop_visit_assoc_item_constraint(c, self);
+ walk_assoc_item_constraint(self, c);
}
fn visit_foreign_mod(&mut self, nm: &mut ForeignMod) {
- noop_visit_foreign_mod(nm, self);
+ walk_foreign_mod(self, nm);
}
fn flat_map_variant(&mut self, v: Variant) -> SmallVec<[Variant; 1]> {
- noop_flat_map_variant(v, self)
+ walk_flat_map_variant(self, v)
}
fn visit_ident(&mut self, i: &mut Ident) {
- noop_visit_ident(i, self);
+ walk_ident(self, i);
}
fn visit_path(&mut self, p: &mut Path) {
- noop_visit_path(p, self);
+ walk_path(self, p);
+ }
+
+ fn visit_path_segment(&mut self, p: &mut PathSegment) {
+ walk_path_segment(self, p)
}
fn visit_qself(&mut self, qs: &mut Option>) {
- noop_visit_qself(qs, self);
+ walk_qself(self, qs);
}
fn visit_generic_args(&mut self, p: &mut GenericArgs) {
- noop_visit_generic_args(p, self);
+ walk_generic_args(self, p);
}
fn visit_angle_bracketed_parameter_data(&mut self, p: &mut AngleBracketedArgs) {
- noop_visit_angle_bracketed_parameter_data(p, self);
+ walk_angle_bracketed_parameter_data(self, p);
}
fn visit_parenthesized_parameter_data(&mut self, p: &mut ParenthesizedArgs) {
- noop_visit_parenthesized_parameter_data(p, self);
+ walk_parenthesized_parameter_data(self, p);
}
fn visit_local(&mut self, l: &mut P) {
- noop_visit_local(l, self);
+ walk_local(self, l);
}
fn visit_mac_call(&mut self, mac: &mut MacCall) {
- noop_visit_mac(mac, self);
+ walk_mac(self, mac);
}
fn visit_macro_def(&mut self, def: &mut MacroDef) {
- noop_visit_macro_def(def, self);
+ walk_macro_def(self, def);
}
fn visit_label(&mut self, label: &mut Label) {
- noop_visit_label(label, self);
+ walk_label(self, label);
}
fn visit_attribute(&mut self, at: &mut Attribute) {
- noop_visit_attribute(at, self);
+ walk_attribute(self, at);
}
fn flat_map_param(&mut self, param: Param) -> SmallVec<[Param; 1]> {
- noop_flat_map_param(param, self)
+ walk_flat_map_param(self, param)
}
fn visit_generics(&mut self, generics: &mut Generics) {
- noop_visit_generics(generics, self);
+ walk_generics(self, generics);
}
fn visit_trait_ref(&mut self, tr: &mut TraitRef) {
- noop_visit_trait_ref(tr, self);
+ walk_trait_ref(self, tr);
}
fn visit_poly_trait_ref(&mut self, p: &mut PolyTraitRef) {
- noop_visit_poly_trait_ref(p, self);
+ walk_poly_trait_ref(self, p);
}
fn visit_variant_data(&mut self, vdata: &mut VariantData) {
- noop_visit_variant_data(vdata, self);
+ walk_variant_data(self, vdata);
}
fn flat_map_generic_param(&mut self, param: GenericParam) -> SmallVec<[GenericParam; 1]> {
- noop_flat_map_generic_param(param, self)
+ walk_flat_map_generic_param(self, param)
}
- fn visit_param_bound(&mut self, tpb: &mut GenericBound) {
- noop_visit_param_bound(tpb, self);
+ fn visit_param_bound(&mut self, tpb: &mut GenericBound, _ctxt: BoundKind) {
+ walk_param_bound(self, tpb);
}
fn visit_precise_capturing_arg(&mut self, arg: &mut PreciseCapturingArg) {
- noop_visit_precise_capturing_arg(arg, self);
+ walk_precise_capturing_arg(self, arg);
}
fn visit_mt(&mut self, mt: &mut MutTy) {
- noop_visit_mt(mt, self);
+ walk_mt(self, mt);
}
fn flat_map_expr_field(&mut self, f: ExprField) -> SmallVec<[ExprField; 1]> {
- noop_flat_map_expr_field(f, self)
+ walk_flat_map_expr_field(self, f)
}
fn visit_where_clause(&mut self, where_clause: &mut WhereClause) {
- noop_visit_where_clause(where_clause, self);
+ walk_where_clause(self, where_clause);
}
fn visit_where_predicate(&mut self, where_predicate: &mut WherePredicate) {
- noop_visit_where_predicate(where_predicate, self);
+ walk_where_predicate(self, where_predicate);
}
fn visit_vis(&mut self, vis: &mut Visibility) {
- noop_visit_vis(vis, self);
+ walk_vis(self, vis);
}
fn visit_id(&mut self, _id: &mut NodeId) {
@@ -292,23 +302,23 @@ pub trait MutVisitor: Sized {
}
fn flat_map_pat_field(&mut self, fp: PatField) -> SmallVec<[PatField; 1]> {
- noop_flat_map_pat_field(fp, self)
+ walk_flat_map_pat_field(self, fp)
}
fn visit_inline_asm(&mut self, asm: &mut InlineAsm) {
- noop_visit_inline_asm(asm, self)
+ walk_inline_asm(self, asm)
}
fn visit_inline_asm_sym(&mut self, sym: &mut InlineAsmSym) {
- noop_visit_inline_asm_sym(sym, self)
+ walk_inline_asm_sym(self, sym)
}
fn visit_format_args(&mut self, fmt: &mut FormatArgs) {
- noop_visit_format_args(fmt, self)
+ walk_format_args(self, fmt)
}
fn visit_capture_by(&mut self, capture_by: &mut CaptureBy) {
- noop_visit_capture_by(capture_by, self)
+ walk_capture_by(self, capture_by)
}
}
@@ -356,7 +366,7 @@ where
}
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_attrs(attrs: &mut AttrVec, vis: &mut T) {
+fn visit_attrs(vis: &mut T, attrs: &mut AttrVec) {
for attr in attrs.iter_mut() {
vis.visit_attribute(attr);
}
@@ -364,32 +374,25 @@ fn visit_attrs(attrs: &mut AttrVec, vis: &mut T) {
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
#[allow(unused)]
-fn visit_exprs(exprs: &mut Vec>, vis: &mut T) {
+fn visit_exprs(vis: &mut T, exprs: &mut Vec>) {
exprs.flat_map_in_place(|expr| vis.filter_map_expr(expr))
}
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_thin_exprs(exprs: &mut ThinVec>, vis: &mut T) {
+fn visit_thin_exprs(vis: &mut T, exprs: &mut ThinVec>) {
exprs.flat_map_in_place(|expr| vis.filter_map_expr(expr))
}
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_bounds(bounds: &mut GenericBounds, vis: &mut T) {
- visit_vec(bounds, |bound| vis.visit_param_bound(bound));
-}
-
-// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_fn_sig(FnSig { header, decl, span }: &mut FnSig, vis: &mut T) {
- vis.visit_fn_header(header);
- vis.visit_fn_decl(decl);
- vis.visit_span(span);
+fn visit_bounds(vis: &mut T, bounds: &mut GenericBounds, ctxt: BoundKind) {
+ visit_vec(bounds, |bound| vis.visit_param_bound(bound, ctxt));
}
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_attr_args(args: &mut AttrArgs, vis: &mut T) {
+fn visit_attr_args(vis: &mut T, args: &mut AttrArgs) {
match args {
AttrArgs::Empty => {}
- AttrArgs::Delimited(args) => visit_delim_args(args, vis),
+ AttrArgs::Delimited(args) => visit_delim_args(vis, args),
AttrArgs::Eq(eq_span, AttrArgsEq::Ast(expr)) => {
vis.visit_expr(expr);
vis.visit_span(eq_span);
@@ -401,31 +404,31 @@ fn visit_attr_args(args: &mut AttrArgs, vis: &mut T) {
}
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_delim_args(args: &mut DelimArgs, vis: &mut T) {
+fn visit_delim_args(vis: &mut T, args: &mut DelimArgs) {
let DelimArgs { dspan, delim: _, tokens } = args;
- visit_tts(tokens, vis);
- visit_delim_span(dspan, vis);
+ visit_tts(vis, tokens);
+ visit_delim_span(vis, dspan);
}
-pub fn visit_delim_span(DelimSpan { open, close }: &mut DelimSpan, vis: &mut T) {
+pub fn visit_delim_span(vis: &mut T, DelimSpan { open, close }: &mut DelimSpan) {
vis.visit_span(open);
vis.visit_span(close);
}
-pub fn noop_flat_map_pat_field(
- mut fp: PatField,
+pub fn walk_flat_map_pat_field(
vis: &mut T,
+ mut fp: PatField,
) -> SmallVec<[PatField; 1]> {
let PatField { attrs, id, ident, is_placeholder: _, is_shorthand: _, pat, span } = &mut fp;
vis.visit_id(id);
- visit_attrs(attrs, vis);
+ visit_attrs(vis, attrs);
vis.visit_ident(ident);
vis.visit_pat(pat);
vis.visit_span(span);
smallvec![fp]
}
-fn noop_visit_use_tree(use_tree: &mut UseTree, vis: &mut T) {
+fn walk_use_tree(vis: &mut T, use_tree: &mut UseTree) {
let UseTree { prefix, kind, span } = use_tree;
vis.visit_path(prefix);
match kind {
@@ -442,10 +445,10 @@ fn noop_visit_use_tree(use_tree: &mut UseTree, vis: &mut T) {
vis.visit_span(span);
}
-pub fn noop_flat_map_arm(mut arm: Arm, vis: &mut T) -> SmallVec<[Arm; 1]> {
+pub fn walk_flat_map_arm(vis: &mut T, mut arm: Arm) -> SmallVec<[Arm; 1]> {
let Arm { attrs, pat, guard, body, span, id, is_placeholder: _ } = &mut arm;
vis.visit_id(id);
- visit_attrs(attrs, vis);
+ visit_attrs(vis, attrs);
vis.visit_pat(pat);
visit_opt(guard, |guard| vis.visit_expr(guard));
visit_opt(body, |body| vis.visit_expr(body));
@@ -453,9 +456,9 @@ pub fn noop_flat_map_arm(mut arm: Arm, vis: &mut T) -> SmallVec<[
smallvec![arm]
}
-fn noop_visit_assoc_item_constraint(
- AssocItemConstraint { id, ident, gen_args, kind, span }: &mut AssocItemConstraint,
+fn walk_assoc_item_constraint(
vis: &mut T,
+ AssocItemConstraint { id, ident, gen_args, kind, span }: &mut AssocItemConstraint,
) {
vis.visit_id(id);
vis.visit_ident(ident);
@@ -467,12 +470,12 @@ fn noop_visit_assoc_item_constraint(
Term::Ty(ty) => vis.visit_ty(ty),
Term::Const(c) => vis.visit_anon_const(c),
},
- AssocItemConstraintKind::Bound { bounds } => visit_bounds(bounds, vis),
+ AssocItemConstraintKind::Bound { bounds } => visit_bounds(vis, bounds, BoundKind::Bound),
}
vis.visit_span(span);
}
-pub fn noop_visit_ty(ty: &mut P, vis: &mut T) {
+pub fn walk_ty(vis: &mut T, ty: &mut P) {
let Ty { id, kind, span, tokens } = ty.deref_mut();
vis.visit_id(id);
match kind {
@@ -487,7 +490,7 @@ pub fn noop_visit_ty(ty: &mut P, vis: &mut T) {
}
TyKind::BareFn(bft) => {
let BareFnTy { safety, ext: _, generic_params, decl, decl_span } = bft.deref_mut();
- visit_safety(safety, vis);
+ visit_safety(vis, safety);
generic_params.flat_map_in_place(|param| vis.flat_map_generic_param(param));
vis.visit_fn_decl(decl);
vis.visit_span(decl_span);
@@ -508,11 +511,11 @@ pub fn noop_visit_ty(ty: &mut P, vis: &mut T) {
}
TyKind::Typeof(expr) => vis.visit_anon_const(expr),
TyKind::TraitObject(bounds, _syntax) => {
- visit_vec(bounds, |bound| vis.visit_param_bound(bound))
+ visit_vec(bounds, |bound| vis.visit_param_bound(bound, BoundKind::TraitObject))
}
TyKind::ImplTrait(id, bounds) => {
vis.visit_id(id);
- visit_vec(bounds, |bound| vis.visit_param_bound(bound));
+ visit_vec(bounds, |bound| vis.visit_param_bound(bound, BoundKind::Impl));
}
TyKind::MacCall(mac) => vis.visit_mac_call(mac),
TyKind::AnonStruct(id, fields) | TyKind::AnonUnion(id, fields) => {
@@ -520,23 +523,23 @@ pub fn noop_visit_ty(ty: &mut P, vis: &mut T) {
fields.flat_map_in_place(|field| vis.flat_map_field_def(field));
}
}
- visit_lazy_tts(tokens, vis);
+ visit_lazy_tts(vis, tokens);
vis.visit_span(span);
}
-fn noop_visit_foreign_mod(foreign_mod: &mut ForeignMod, vis: &mut T) {
+fn walk_foreign_mod(vis: &mut T, foreign_mod: &mut ForeignMod) {
let ForeignMod { safety, abi: _, items } = foreign_mod;
- visit_safety(safety, vis);
+ visit_safety(vis, safety);
items.flat_map_in_place(|item| vis.flat_map_foreign_item(item));
}
-pub fn noop_flat_map_variant(
- mut variant: Variant,
+pub fn walk_flat_map_variant(
visitor: &mut T,
+ mut variant: Variant,
) -> SmallVec<[Variant; 1]> {
let Variant { ident, vis, attrs, id, data, disr_expr, span, is_placeholder: _ } = &mut variant;
visitor.visit_id(id);
- visit_attrs(attrs, visitor);
+ visit_attrs(visitor, attrs);
visitor.visit_vis(vis);
visitor.visit_ident(ident);
visitor.visit_variant_data(data);
@@ -545,21 +548,26 @@ pub fn noop_flat_map_variant(
smallvec![variant]
}
-fn noop_visit_ident(Ident { name: _, span }: &mut Ident, vis: &mut T) {
+fn walk_ident(vis: &mut T, Ident { name: _, span }: &mut Ident) {
vis.visit_span(span);
}
-fn noop_visit_path(Path { segments, span, tokens }: &mut Path, vis: &mut T) {
- for PathSegment { ident, id, args } in segments {
- vis.visit_id(id);
- vis.visit_ident(ident);
- visit_opt(args, |args| vis.visit_generic_args(args));
+fn walk_path_segment(vis: &mut T, segment: &mut PathSegment) {
+ let PathSegment { ident, id, args } = segment;
+ vis.visit_id(id);
+ vis.visit_ident(ident);
+ visit_opt(args, |args| vis.visit_generic_args(args));
+}
+
+fn walk_path(vis: &mut T, Path { segments, span, tokens }: &mut Path) {
+ for segment in segments {
+ vis.visit_path_segment(segment);
}
- visit_lazy_tts(tokens, vis);
+ visit_lazy_tts(vis, tokens);
vis.visit_span(span);
}
-fn noop_visit_qself(qself: &mut Option>, vis: &mut T) {
+fn walk_qself(vis: &mut T, qself: &mut Option>) {
visit_opt(qself, |qself| {
let QSelf { ty, path_span, position: _ } = &mut **qself;
vis.visit_ty(ty);
@@ -567,7 +575,7 @@ fn noop_visit_qself(qself: &mut Option>, vis: &mut T) {
})
}
-fn noop_visit_generic_args(generic_args: &mut GenericArgs, vis: &mut T) {
+fn walk_generic_args(vis: &mut T, generic_args: &mut GenericArgs) {
match generic_args {
GenericArgs::AngleBracketed(data) => vis.visit_angle_bracketed_parameter_data(data),
GenericArgs::Parenthesized(data) => vis.visit_parenthesized_parameter_data(data),
@@ -575,7 +583,7 @@ fn noop_visit_generic_args(generic_args: &mut GenericArgs, vis: &
}
}
-fn noop_visit_generic_arg(arg: &mut GenericArg, vis: &mut T) {
+fn walk_generic_arg(vis: &mut T, arg: &mut GenericArg) {
match arg {
GenericArg::Lifetime(lt) => vis.visit_lifetime(lt),
GenericArg::Type(ty) => vis.visit_ty(ty),
@@ -583,10 +591,7 @@ fn noop_visit_generic_arg(arg: &mut GenericArg, vis: &mut T) {
}
}
-fn noop_visit_angle_bracketed_parameter_data(
- data: &mut AngleBracketedArgs,
- vis: &mut T,
-) {
+fn walk_angle_bracketed_parameter_data(vis: &mut T, data: &mut AngleBracketedArgs) {
let AngleBracketedArgs { args, span } = data;
visit_thin_vec(args, |arg| match arg {
AngleBracketedArg::Arg(arg) => vis.visit_generic_arg(arg),
@@ -595,21 +600,18 @@ fn noop_visit_angle_bracketed_parameter_data(
vis.visit_span(span);
}
-fn noop_visit_parenthesized_parameter_data(
- args: &mut ParenthesizedArgs,
- vis: &mut T,
-) {
+fn walk_parenthesized_parameter_data(vis: &mut T, args: &mut ParenthesizedArgs) {
let ParenthesizedArgs { inputs, output, span, inputs_span } = args;
visit_thin_vec(inputs, |input| vis.visit_ty(input));
- noop_visit_fn_ret_ty(output, vis);
+ walk_fn_ret_ty(vis, output);
vis.visit_span(span);
vis.visit_span(inputs_span);
}
-fn noop_visit_local(local: &mut P, vis: &mut T) {
+fn walk_local(vis: &mut T, local: &mut P) {
let Local { id, pat, ty, kind, span, colon_sp, attrs, tokens } = local.deref_mut();
vis.visit_id(id);
- visit_attrs(attrs, vis);
+ visit_attrs(vis, attrs);
vis.visit_pat(pat);
visit_opt(ty, |ty| vis.visit_ty(ty));
match kind {
@@ -622,12 +624,12 @@ fn noop_visit_local(local: &mut P, vis: &mut T) {
vis.visit_block(els);
}
}
- visit_lazy_tts(tokens, vis);
+ visit_lazy_tts(vis, tokens);
visit_opt(colon_sp, |sp| vis.visit_span(sp));
vis.visit_span(span);
}
-fn noop_visit_attribute(attr: &mut Attribute, vis: &mut T) {
+fn walk_attribute(vis: &mut T, attr: &mut Attribute) {
let Attribute { kind, id: _, style: _, span } = attr;
match kind {
AttrKind::Normal(normal) => {
@@ -636,34 +638,34 @@ fn noop_visit_attribute(attr: &mut Attribute, vis: &mut T) {
tokens: attr_tokens,
} = &mut **normal;
vis.visit_path(path);
- visit_attr_args(args, vis);
- visit_lazy_tts(tokens, vis);
- visit_lazy_tts(attr_tokens, vis);
+ visit_attr_args(vis, args);
+ visit_lazy_tts(vis, tokens);
+ visit_lazy_tts(vis, attr_tokens);
}
AttrKind::DocComment(_kind, _sym) => {}
}
vis.visit_span(span);
}
-fn noop_visit_mac(mac: &mut MacCall, vis: &mut T) {
+fn walk_mac(vis: &mut T, mac: &mut MacCall) {
let MacCall { path, args } = mac;
vis.visit_path(path);
- visit_delim_args(args, vis);
+ visit_delim_args(vis, args);
}
-fn noop_visit_macro_def(macro_def: &mut MacroDef, vis: &mut T) {
+fn walk_macro_def(vis: &mut T, macro_def: &mut MacroDef) {
let MacroDef { body, macro_rules: _ } = macro_def;
- visit_delim_args(body, vis);
+ visit_delim_args(vis, body);
}
-fn noop_visit_meta_list_item(li: &mut NestedMetaItem, vis: &mut T) {
+fn walk_meta_list_item(vis: &mut T, li: &mut NestedMetaItem) {
match li {
NestedMetaItem::MetaItem(mi) => vis.visit_meta_item(mi),
NestedMetaItem::Lit(_lit) => {}
}
}
-fn noop_visit_meta_item(mi: &mut MetaItem, vis: &mut T) {
+fn walk_meta_item(vis: &mut T, mi: &mut MetaItem) {
let MetaItem { unsafety: _, path: _, kind, span } = mi;
match kind {
MetaItemKind::Word => {}
@@ -673,10 +675,10 @@ fn noop_visit_meta_item(mi: &mut MetaItem, vis: &mut T) {
vis.visit_span(span);
}
-pub fn noop_flat_map_param(mut param: Param, vis: &mut T) -> SmallVec<[Param; 1]> {
+pub fn walk_flat_map_param(vis: &mut T, mut param: Param) -> SmallVec<[Param; 1]> {
let Param { attrs, id, pat, span, ty, is_placeholder: _ } = &mut param;
vis.visit_id(id);
- visit_attrs(attrs, vis);
+ visit_attrs(vis, attrs);
vis.visit_pat(pat);
vis.visit_ty(ty);
vis.visit_span(span);
@@ -684,69 +686,69 @@ pub fn noop_flat_map_param(mut param: Param, vis: &mut T) -> Smal
}
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_attr_tt(tt: &mut AttrTokenTree, vis: &mut T) {
+fn visit_attr_tt(vis: &mut T, tt: &mut AttrTokenTree) {
match tt {
AttrTokenTree::Token(token, _spacing) => {
- visit_token(token, vis);
+ visit_token(vis, token);
}
AttrTokenTree::Delimited(dspan, _spacing, _delim, tts) => {
- visit_attr_tts(tts, vis);
- visit_delim_span(dspan, vis);
+ visit_attr_tts(vis, tts);
+ visit_delim_span(vis, dspan);
}
AttrTokenTree::AttrsTarget(AttrsTarget { attrs, tokens }) => {
- visit_attrs(attrs, vis);
- visit_lazy_tts_opt_mut(Some(tokens), vis);
+ visit_attrs(vis, attrs);
+ visit_lazy_tts_opt_mut(vis, Some(tokens));
}
}
}
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_tt(tt: &mut TokenTree, vis: &mut T) {
+fn visit_tt(vis: &mut T, tt: &mut TokenTree) {
match tt {
TokenTree::Token(token, _spacing) => {
- visit_token(token, vis);
+ visit_token(vis, token);
}
TokenTree::Delimited(dspan, _spacing, _delim, tts) => {
- visit_tts(tts, vis);
- visit_delim_span(dspan, vis);
+ visit_tts(vis, tts);
+ visit_delim_span(vis, dspan);
}
}
}
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_tts(TokenStream(tts): &mut TokenStream, vis: &mut T) {
+fn visit_tts(vis: &mut T, TokenStream(tts): &mut TokenStream) {
if T::VISIT_TOKENS && !tts.is_empty() {
let tts = Lrc::make_mut(tts);
- visit_vec(tts, |tree| visit_tt(tree, vis));
+ visit_vec(tts, |tree| visit_tt(vis, tree));
}
}
-fn visit_attr_tts(AttrTokenStream(tts): &mut AttrTokenStream, vis: &mut T) {
+fn visit_attr_tts(vis: &mut T, AttrTokenStream(tts): &mut AttrTokenStream) {
if T::VISIT_TOKENS && !tts.is_empty() {
let tts = Lrc::make_mut(tts);
- visit_vec(tts, |tree| visit_attr_tt(tree, vis));
+ visit_vec(tts, |tree| visit_attr_tt(vis, tree));
}
}
-fn visit_lazy_tts_opt_mut(lazy_tts: Option<&mut LazyAttrTokenStream>, vis: &mut T) {
+fn visit_lazy_tts_opt_mut(vis: &mut T, lazy_tts: Option<&mut LazyAttrTokenStream>) {
if T::VISIT_TOKENS {
if let Some(lazy_tts) = lazy_tts {
let mut tts = lazy_tts.to_attr_token_stream();
- visit_attr_tts(&mut tts, vis);
+ visit_attr_tts(vis, &mut tts);
*lazy_tts = LazyAttrTokenStream::new(tts);
}
}
}
-fn visit_lazy_tts(lazy_tts: &mut Option, vis: &mut T) {
- visit_lazy_tts_opt_mut(lazy_tts.as_mut(), vis);
+fn visit_lazy_tts(vis: &mut T, lazy_tts: &mut Option) {
+ visit_lazy_tts_opt_mut(vis, lazy_tts.as_mut());
}
/// Applies ident visitor if it's an ident; applies other visits to interpolated nodes.
/// In practice the ident part is not actually used by specific visitors right now,
/// but there's a test below checking that it works.
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-pub fn visit_token(t: &mut Token, vis: &mut T) {
+pub fn visit_token(vis: &mut T, t: &mut Token) {
let Token { kind, span } = t;
match kind {
token::Ident(name, _ /*raw*/) | token::Lifetime(name) => {
@@ -764,7 +766,7 @@ pub fn visit_token(t: &mut Token, vis: &mut T) {
}
token::Interpolated(nt) => {
let nt = Lrc::make_mut(nt);
- visit_nonterminal(nt, vis);
+ visit_nonterminal(vis, nt);
}
_ => {}
}
@@ -795,7 +797,7 @@ pub fn visit_token(t: &mut Token, vis: &mut T) {
// contain multiple items, but decided against it when I looked at
// `parse_item_or_view_item` and tried to figure out what I would do with
// multiple items there....
-fn visit_nonterminal(nt: &mut token::Nonterminal, vis: &mut T) {
+fn visit_nonterminal(vis: &mut T, nt: &mut token::Nonterminal) {
match nt {
token::NtItem(item) => visit_clobber(item, |item| {
// This is probably okay, because the only visitors likely to
@@ -817,8 +819,8 @@ fn visit_nonterminal(nt: &mut token::Nonterminal, vis: &mut T) {
token::NtMeta(item) => {
let AttrItem { unsafety: _, path, args, tokens } = item.deref_mut();
vis.visit_path(path);
- visit_attr_args(args, vis);
- visit_lazy_tts(tokens, vis);
+ visit_attr_args(vis, args);
+ visit_lazy_tts(vis, tokens);
}
token::NtPath(path) => vis.visit_path(path),
token::NtVis(visib) => vis.visit_vis(visib),
@@ -826,7 +828,7 @@ fn visit_nonterminal(nt: &mut token::Nonterminal, vis: &mut T) {
}
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_defaultness(defaultness: &mut Defaultness, vis: &mut T) {
+fn visit_defaultness(vis: &mut T, defaultness: &mut Defaultness) {
match defaultness {
Defaultness::Default(span) => vis.visit_span(span),
Defaultness::Final => {}
@@ -834,7 +836,7 @@ fn visit_defaultness(defaultness: &mut Defaultness, vis: &mut T)
}
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_safety(safety: &mut Safety, vis: &mut T) {
+fn visit_safety(vis: &mut T, safety: &mut Safety) {
match safety {
Safety::Unsafe(span) => vis.visit_span(span),
Safety::Safe(span) => vis.visit_span(span),
@@ -843,7 +845,7 @@ fn visit_safety(safety: &mut Safety, vis: &mut T) {
}
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_polarity(polarity: &mut ImplPolarity, vis: &mut T) {
+fn visit_polarity(vis: &mut T, polarity: &mut ImplPolarity) {
match polarity {
ImplPolarity::Positive => {}
ImplPolarity::Negative(span) => vis.visit_span(span),
@@ -851,14 +853,14 @@ fn visit_polarity(polarity: &mut ImplPolarity, vis: &mut T) {
}
// No `noop_` prefix because there isn't a corresponding method in `MutVisitor`.
-fn visit_constness(constness: &mut Const, vis: &mut T) {
+fn visit_constness(vis: &mut T, constness: &mut Const) {
match constness {
Const::Yes(span) => vis.visit_span(span),
Const::No => {}
}
}
-fn noop_visit_closure_binder(binder: &mut ClosureBinder, vis: &mut T) {
+fn walk_closure_binder(vis: &mut T, binder: &mut ClosureBinder) {
match binder {
ClosureBinder::NotPresent => {}
ClosureBinder::For { span: _, generic_params } => {
@@ -867,7 +869,7 @@ fn noop_visit_closure_binder(binder: &mut ClosureBinder, vis: &mu
}
}
-fn noop_visit_coroutine_kind(coroutine_kind: &mut CoroutineKind, vis: &mut T) {
+fn walk_coroutine_kind(vis: &mut T, coroutine_kind: &mut CoroutineKind) {
match coroutine_kind {
CoroutineKind::Async { span, closure_id, return_impl_trait_id }
| CoroutineKind::Gen { span, closure_id, return_impl_trait_id }
@@ -879,23 +881,43 @@ fn noop_visit_coroutine_kind(coroutine_kind: &mut CoroutineKind,
}
}
-fn noop_visit_fn_decl(decl: &mut P, vis: &mut T) {
+fn walk_fn(vis: &mut T, kind: FnKind<'_>) {
+ match kind {
+ FnKind::Fn(FnSig { header, decl, span }, generics, body) => {
+ // Identifier and visibility are visited as a part of the item.
+ vis.visit_fn_header(header);
+ vis.visit_generics(generics);
+ vis.visit_fn_decl(decl);
+ if let Some(body) = body {
+ vis.visit_block(body);
+ }
+ vis.visit_span(span);
+ }
+ FnKind::Closure(binder, decl, body) => {
+ vis.visit_closure_binder(binder);
+ vis.visit_fn_decl(decl);
+ vis.visit_expr(body);
+ }
+ }
+}
+
+fn walk_fn_decl(vis: &mut T, decl: &mut P) {
let FnDecl { inputs, output } = decl.deref_mut();
inputs.flat_map_in_place(|param| vis.flat_map_param(param));
- noop_visit_fn_ret_ty(output, vis);
+ walk_fn_ret_ty(vis, output);
}
-fn noop_visit_fn_ret_ty(fn_ret_ty: &mut FnRetTy, vis: &mut T) {
+fn walk_fn_ret_ty(vis: &mut T, fn_ret_ty: &mut FnRetTy) {
match fn_ret_ty {
FnRetTy::Default(span) => vis.visit_span(span),
FnRetTy::Ty(ty) => vis.visit_ty(ty),
}
}
-fn noop_visit_param_bound(pb: &mut GenericBound, vis: &mut T) {
+fn walk_param_bound(vis: &mut T, pb: &mut GenericBound) {
match pb {
GenericBound::Trait(ty, _modifier) => vis.visit_poly_trait_ref(ty),
- GenericBound::Outlives(lifetime) => noop_visit_lifetime(lifetime, vis),
+ GenericBound::Outlives(lifetime) => walk_lifetime(vis, lifetime),
GenericBound::Use(args, span) => {
for arg in args {
vis.visit_precise_capturing_arg(arg);
@@ -905,7 +927,7 @@ fn noop_visit_param_bound(pb: &mut GenericBound, vis: &mut T) {
}
}
-fn noop_visit_precise_capturing_arg(arg: &mut PreciseCapturingArg, vis: &mut T) {
+fn walk_precise_capturing_arg(vis: &mut T, arg: &mut PreciseCapturingArg) {
match arg {
PreciseCapturingArg::Lifetime(lt) => {
vis.visit_lifetime(lt);
@@ -917,15 +939,15 @@ fn noop_visit_precise_capturing_arg(arg: &mut PreciseCapturingArg
}
}
-pub fn noop_flat_map_generic_param(
- mut param: GenericParam,
+pub fn walk_flat_map_generic_param(
vis: &mut T,
+ mut param: GenericParam,
) -> SmallVec<[GenericParam; 1]> {
let GenericParam { id, ident, attrs, bounds, kind, colon_span, is_placeholder: _ } = &mut param;
vis.visit_id(id);
- visit_attrs(attrs, vis);
+ visit_attrs(vis, attrs);
vis.visit_ident(ident);
- visit_vec(bounds, |bound| vis.visit_param_bound(bound));
+ visit_vec(bounds, |bound| vis.visit_param_bound(bound, BoundKind::Bound));
match kind {
GenericParamKind::Lifetime => {}
GenericParamKind::Type { default } => {
@@ -942,23 +964,23 @@ pub fn noop_flat_map_generic_param(
smallvec![param]
}
-fn noop_visit_label(Label { ident }: &mut Label, vis: &mut T) {
+fn walk_label(vis: &mut T, Label { ident }: &mut Label) {
vis.visit_ident(ident);
}
-fn noop_visit_lifetime(Lifetime { id, ident }: &mut Lifetime, vis: &mut T) {
+fn walk_lifetime(vis: &mut T, Lifetime { id, ident }: &mut Lifetime) {
vis.visit_id(id);
vis.visit_ident(ident);
}
-fn noop_visit_generics(generics: &mut Generics, vis: &mut T) {
+fn walk_generics(vis: &mut T, generics: &mut Generics) {
let Generics { params, where_clause, span } = generics;
params.flat_map_in_place(|param| vis.flat_map_generic_param(param));
vis.visit_where_clause(where_clause);
vis.visit_span(span);
}
-fn noop_visit_ty_alias_where_clauses(tawcs: &mut TyAliasWhereClauses, vis: &mut T) {
+fn walk_ty_alias_where_clauses(vis: &mut T, tawcs: &mut TyAliasWhereClauses) {
let TyAliasWhereClauses { before, after, split: _ } = tawcs;
let TyAliasWhereClause { has_where_token: _, span: span_before } = before;
let TyAliasWhereClause { has_where_token: _, span: span_after } = after;
@@ -966,25 +988,25 @@ fn noop_visit_ty_alias_where_clauses(tawcs: &mut TyAliasWhereClau
vis.visit_span(span_after);
}
-fn noop_visit_where_clause(wc: &mut WhereClause, vis: &mut T) {
+fn walk_where_clause(vis: &mut T, wc: &mut WhereClause) {
let WhereClause { has_where_token: _, predicates, span } = wc;
visit_thin_vec(predicates, |predicate| vis.visit_where_predicate(predicate));
vis.visit_span(span);
}
-fn noop_visit_where_predicate(pred: &mut WherePredicate, vis: &mut T) {
+fn walk_where_predicate(vis: &mut T, pred: &mut WherePredicate) {
match pred {
WherePredicate::BoundPredicate(bp) => {
let WhereBoundPredicate { span, bound_generic_params, bounded_ty, bounds } = bp;
bound_generic_params.flat_map_in_place(|param| vis.flat_map_generic_param(param));
vis.visit_ty(bounded_ty);
- visit_vec(bounds, |bound| vis.visit_param_bound(bound));
+ visit_vec(bounds, |bound| vis.visit_param_bound(bound, BoundKind::Bound));
vis.visit_span(span);
}
WherePredicate::RegionPredicate(rp) => {
let WhereRegionPredicate { span, lifetime, bounds } = rp;
vis.visit_lifetime(lifetime);
- visit_vec(bounds, |bound| noop_visit_param_bound(bound, vis));
+ visit_vec(bounds, |bound| vis.visit_param_bound(bound, BoundKind::Bound));
vis.visit_span(span);
}
WherePredicate::EqPredicate(ep) => {
@@ -996,7 +1018,7 @@ fn noop_visit_where_predicate(pred: &mut WherePredicate, vis: &mu
}
}
-fn noop_visit_variant_data(vdata: &mut VariantData, vis: &mut T) {
+fn walk_variant_data(vis: &mut T, vdata: &mut VariantData) {
match vdata {
VariantData::Struct { fields, recovered: _ } => {
fields.flat_map_in_place(|field| vis.flat_map_field_def(field));
@@ -1009,25 +1031,25 @@ fn noop_visit_variant_data(vdata: &mut VariantData, vis: &mut T)
}
}
-fn noop_visit_trait_ref(TraitRef { path, ref_id }: &mut TraitRef, vis: &mut T) {
+fn walk_trait_ref(vis: &mut T, TraitRef { path, ref_id }: &mut TraitRef) {
vis.visit_id(ref_id);
vis.visit_path(path);
}
-fn noop_visit_poly_trait_ref(p: &mut PolyTraitRef, vis: &mut T) {
+fn walk_poly_trait_ref(vis: &mut T, p: &mut PolyTraitRef) {
let PolyTraitRef { bound_generic_params, trait_ref, span } = p;
bound_generic_params.flat_map_in_place(|param| vis.flat_map_generic_param(param));
vis.visit_trait_ref(trait_ref);
vis.visit_span(span);
}
-pub fn noop_flat_map_field_def(
- mut fd: FieldDef,
+pub fn walk_flat_map_field_def(
visitor: &mut T,
+ mut fd: FieldDef,
) -> SmallVec<[FieldDef; 1]> {
let FieldDef { span, ident, vis, id, ty, attrs, is_placeholder: _ } = &mut fd;
visitor.visit_id(id);
- visit_attrs(attrs, visitor);
+ visit_attrs(visitor, attrs);
visitor.visit_vis(vis);
visit_opt(ident, |ident| visitor.visit_ident(ident));
visitor.visit_ty(ty);
@@ -1035,37 +1057,42 @@ pub fn noop_flat_map_field_def(
smallvec![fd]
}
-pub fn noop_flat_map_expr_field(
- mut f: ExprField,
+pub fn walk_flat_map_expr_field(
vis: &mut T,
+ mut f: ExprField,
) -> SmallVec<[ExprField; 1]> {
let ExprField { ident, expr, span, is_shorthand: _, attrs, id, is_placeholder: _ } = &mut f;
vis.visit_id(id);
- visit_attrs(attrs, vis);
+ visit_attrs(vis, attrs);
vis.visit_ident(ident);
vis.visit_expr(expr);
vis.visit_span(span);
smallvec![f]
}
-fn noop_visit_mt(MutTy { ty, mutbl: _ }: &mut MutTy, vis: &mut T) {
+fn walk_mt(vis: &mut T, MutTy { ty, mutbl: _ }: &mut MutTy) {
vis.visit_ty(ty);
}
-pub fn noop_visit_block(block: &mut P, vis: &mut T) {
+pub fn walk_block(vis: &mut T, block: &mut P) {
let Block { id, stmts, rules: _, span, tokens, could_be_bare_literal: _ } = block.deref_mut();
vis.visit_id(id);
stmts.flat_map_in_place(|stmt| vis.flat_map_stmt(stmt));
- visit_lazy_tts(tokens, vis);
+ visit_lazy_tts(vis, tokens);
vis.visit_span(span);
}
-pub fn noop_visit_item_kind(kind: &mut impl NoopVisitItemKind, vis: &mut impl MutVisitor) {
- kind.noop_visit(vis)
+pub fn walk_item_kind(
+ kind: &mut impl WalkItemKind,
+ span: Span,
+ id: NodeId,
+ vis: &mut impl MutVisitor,
+) {
+ kind.walk(span, id, vis)
}
-impl NoopVisitItemKind for ItemKind {
- fn noop_visit(&mut self, vis: &mut impl MutVisitor) {
+impl WalkItemKind for ItemKind {
+ fn walk(&mut self, span: Span, id: NodeId, vis: &mut impl MutVisitor) {
match self {
ItemKind::ExternCrate(_orig_name) => {}
ItemKind::Use(use_tree) => vis.visit_use_tree(use_tree),
@@ -1077,13 +1104,11 @@ impl NoopVisitItemKind for ItemKind {
visit_const_item(item, vis);
}
ItemKind::Fn(box Fn { defaultness, generics, sig, body }) => {
- visit_defaultness(defaultness, vis);
- vis.visit_generics(generics);
- visit_fn_sig(sig, vis);
- visit_opt(body, |body| vis.visit_block(body));
+ visit_defaultness(vis, defaultness);
+ vis.visit_fn(FnKind::Fn(sig, generics, body), span, id);
}
ItemKind::Mod(safety, mod_kind) => {
- visit_safety(safety, vis);
+ visit_safety(vis, safety);
match mod_kind {
ModKind::Loaded(items, _inline, ModSpans { inner_span, inject_use_span }) => {
items.flat_map_in_place(|item| vis.flat_map_item(item));
@@ -1096,11 +1121,11 @@ impl NoopVisitItemKind for ItemKind {
ItemKind::ForeignMod(nm) => vis.visit_foreign_mod(nm),
ItemKind::GlobalAsm(asm) => vis.visit_inline_asm(asm),
ItemKind::TyAlias(box TyAlias { defaultness, generics, where_clauses, bounds, ty }) => {
- visit_defaultness(defaultness, vis);
+ visit_defaultness(vis, defaultness);
vis.visit_generics(generics);
- visit_bounds(bounds, vis);
+ visit_bounds(vis, bounds, BoundKind::Bound);
visit_opt(ty, |ty| vis.visit_ty(ty));
- noop_visit_ty_alias_where_clauses(where_clauses, vis);
+ walk_ty_alias_where_clauses(vis, where_clauses);
}
ItemKind::Enum(EnumDef { variants }, generics) => {
vis.visit_generics(generics);
@@ -1120,24 +1145,24 @@ impl NoopVisitItemKind for ItemKind {
self_ty,
items,
}) => {
- visit_defaultness(defaultness, vis);
- visit_safety(safety, vis);
+ visit_defaultness(vis, defaultness);
+ visit_safety(vis, safety);
vis.visit_generics(generics);
- visit_constness(constness, vis);
- visit_polarity(polarity, vis);
+ visit_constness(vis, constness);
+ visit_polarity(vis, polarity);
visit_opt(of_trait, |trait_ref| vis.visit_trait_ref(trait_ref));
vis.visit_ty(self_ty);
- items.flat_map_in_place(|item| vis.flat_map_impl_item(item));
+ items.flat_map_in_place(|item| vis.flat_map_assoc_item(item, AssocCtxt::Impl));
}
ItemKind::Trait(box Trait { safety, is_auto: _, generics, bounds, items }) => {
- visit_safety(safety, vis);
+ visit_safety(vis, safety);
vis.visit_generics(generics);
- visit_bounds(bounds, vis);
- items.flat_map_in_place(|item| vis.flat_map_trait_item(item));
+ visit_bounds(vis, bounds, BoundKind::Bound);
+ items.flat_map_in_place(|item| vis.flat_map_assoc_item(item, AssocCtxt::Trait));
}
ItemKind::TraitAlias(generics, bounds) => {
vis.visit_generics(generics);
- visit_bounds(bounds, vis);
+ visit_bounds(vis, bounds, BoundKind::Bound);
}
ItemKind::MacCall(m) => vis.visit_mac_call(m),
ItemKind::MacroDef(def) => vis.visit_macro_def(def),
@@ -1178,17 +1203,15 @@ impl NoopVisitItemKind for ItemKind {
}
}
-impl NoopVisitItemKind for AssocItemKind {
- fn noop_visit(&mut self, visitor: &mut impl MutVisitor) {
+impl WalkItemKind for AssocItemKind {
+ fn walk(&mut self, span: Span, id: NodeId, visitor: &mut impl MutVisitor) {
match self {
AssocItemKind::Const(item) => {
visit_const_item(item, visitor);
}
AssocItemKind::Fn(box Fn { defaultness, generics, sig, body }) => {
- visit_defaultness(defaultness, visitor);
- visitor.visit_generics(generics);
- visit_fn_sig(sig, visitor);
- visit_opt(body, |body| visitor.visit_block(body));
+ visit_defaultness(visitor, defaultness);
+ visitor.visit_fn(FnKind::Fn(sig, generics, body), span, id);
}
AssocItemKind::Type(box TyAlias {
defaultness,
@@ -1197,11 +1220,11 @@ impl NoopVisitItemKind for AssocItemKind {
bounds,
ty,
}) => {
- visit_defaultness(defaultness, visitor);
+ visit_defaultness(visitor, defaultness);
visitor.visit_generics(generics);
- visit_bounds(bounds, visitor);
+ visit_bounds(visitor, bounds, BoundKind::Bound);
visit_opt(ty, |ty| visitor.visit_ty(ty));
- noop_visit_ty_alias_where_clauses(where_clauses, visitor);
+ walk_ty_alias_where_clauses(visitor, where_clauses);
}
AssocItemKind::MacCall(mac) => visitor.visit_mac_call(mac),
AssocItemKind::Delegation(box Delegation {
@@ -1245,57 +1268,55 @@ fn visit_const_item(
ConstItem { defaultness, generics, ty, expr }: &mut ConstItem,
visitor: &mut T,
) {
- visit_defaultness(defaultness, visitor);
+ visit_defaultness(visitor, defaultness);
visitor.visit_generics(generics);
visitor.visit_ty(ty);
visit_opt(expr, |expr| visitor.visit_expr(expr));
}
-fn noop_visit_fn_header(header: &mut FnHeader, vis: &mut T) {
+fn walk_fn_header(vis: &mut T, header: &mut FnHeader) {
let FnHeader { safety, coroutine_kind, constness, ext: _ } = header;
- visit_constness(constness, vis);
+ visit_constness(vis, constness);
coroutine_kind.as_mut().map(|coroutine_kind| vis.visit_coroutine_kind(coroutine_kind));
- visit_safety(safety, vis);
+ visit_safety(vis, safety);
}
-pub fn noop_visit_crate(krate: &mut Crate, vis: &mut T) {
+pub fn walk_crate(vis: &mut T, krate: &mut Crate) {
let Crate { attrs, items, spans, id, is_placeholder: _ } = krate;
vis.visit_id(id);
- visit_attrs(attrs, vis);
+ visit_attrs(vis, attrs);
items.flat_map_in_place(|item| vis.flat_map_item(item));
let ModSpans { inner_span, inject_use_span } = spans;
vis.visit_span(inner_span);
vis.visit_span(inject_use_span);
}
-// Mutates one item into possibly many items.
-pub fn noop_flat_map_item(
- mut item: P- >,
+/// Mutates one item, returning the item again.
+pub fn walk_flat_map_item(
visitor: &mut impl MutVisitor,
+ mut item: P
- >,
) -> SmallVec<[P
- >; 1]> {
let Item { ident, attrs, id, kind, vis, span, tokens } = item.deref_mut();
visitor.visit_id(id);
- visit_attrs(attrs, visitor);
+ visit_attrs(visitor, attrs);
visitor.visit_vis(vis);
visitor.visit_ident(ident);
- kind.noop_visit(visitor);
- visit_lazy_tts(tokens, visitor);
+ kind.walk(*span, *id, visitor);
+ visit_lazy_tts(visitor, tokens);
visitor.visit_span(span);
smallvec![item]
}
-impl NoopVisitItemKind for ForeignItemKind {
- fn noop_visit(&mut self, visitor: &mut impl MutVisitor) {
+impl WalkItemKind for ForeignItemKind {
+ fn walk(&mut self, span: Span, id: NodeId, visitor: &mut impl MutVisitor) {
match self {
ForeignItemKind::Static(box StaticItem { ty, mutability: _, expr, safety: _ }) => {
visitor.visit_ty(ty);
visit_opt(expr, |expr| visitor.visit_expr(expr));
}
ForeignItemKind::Fn(box Fn { defaultness, generics, sig, body }) => {
- visit_defaultness(defaultness, visitor);
- visitor.visit_generics(generics);
- visit_fn_sig(sig, visitor);
- visit_opt(body, |body| visitor.visit_block(body));
+ visit_defaultness(visitor, defaultness);
+ visitor.visit_fn(FnKind::Fn(sig, generics, body), span, id);
}
ForeignItemKind::TyAlias(box TyAlias {
defaultness,
@@ -1304,18 +1325,18 @@ impl NoopVisitItemKind for ForeignItemKind {
bounds,
ty,
}) => {
- visit_defaultness(defaultness, visitor);
+ visit_defaultness(visitor, defaultness);
visitor.visit_generics(generics);
- visit_bounds(bounds, visitor);
+ visit_bounds(visitor, bounds, BoundKind::Bound);
visit_opt(ty, |ty| visitor.visit_ty(ty));
- noop_visit_ty_alias_where_clauses(where_clauses, visitor);
+ walk_ty_alias_where_clauses(visitor, where_clauses);
}
ForeignItemKind::MacCall(mac) => visitor.visit_mac_call(mac),
}
}
}
-pub fn noop_visit_pat(pat: &mut P, vis: &mut T) {
+pub fn walk_pat(vis: &mut T, pat: &mut P) {
let Pat { id, kind, span, tokens } = pat.deref_mut();
vis.visit_id(id);
match kind {
@@ -1354,16 +1375,16 @@ pub fn noop_visit_pat(pat: &mut P, vis: &mut T) {
PatKind::Paren(inner) => vis.visit_pat(inner),
PatKind::MacCall(mac) => vis.visit_mac_call(mac),
}
- visit_lazy_tts(tokens, vis);
+ visit_lazy_tts(vis, tokens);
vis.visit_span(span);
}
-fn noop_visit_anon_const(AnonConst { id, value }: &mut AnonConst, vis: &mut T) {
+fn walk_anon_const(vis: &mut T, AnonConst { id, value }: &mut AnonConst) {
vis.visit_id(id);
vis.visit_expr(value);
}
-fn noop_visit_inline_asm(asm: &mut InlineAsm, vis: &mut T) {
+fn walk_inline_asm(vis: &mut T, asm: &mut InlineAsm) {
// FIXME: Visit spans inside all this currently ignored stuff.
let InlineAsm {
template: _,
@@ -1393,16 +1414,16 @@ fn noop_visit_inline_asm(asm: &mut InlineAsm, vis: &mut T) {
}
}
-fn noop_visit_inline_asm_sym(
- InlineAsmSym { id, qself, path }: &mut InlineAsmSym,
+fn walk_inline_asm_sym(
vis: &mut T,
+ InlineAsmSym { id, qself, path }: &mut InlineAsmSym,
) {
vis.visit_id(id);
vis.visit_qself(qself);
vis.visit_path(path);
}
-fn noop_visit_format_args(fmt: &mut FormatArgs, vis: &mut T) {
+fn walk_format_args(vis: &mut T, fmt: &mut FormatArgs) {
// FIXME: visit the template exhaustively.
let FormatArgs { span, template: _, arguments } = fmt;
for FormatArgument { kind, expr } in arguments.all_args_mut() {
@@ -1417,14 +1438,11 @@ fn noop_visit_format_args(fmt: &mut FormatArgs, vis: &mut T) {
vis.visit_span(span);
}
-pub fn noop_visit_expr(
- Expr { kind, id, span, attrs, tokens }: &mut Expr,
- vis: &mut T,
-) {
+pub fn walk_expr(vis: &mut T, Expr { kind, id, span, attrs, tokens }: &mut Expr) {
vis.visit_id(id);
- visit_attrs(attrs, vis);
+ visit_attrs(vis, attrs);
match kind {
- ExprKind::Array(exprs) => visit_thin_exprs(exprs, vis),
+ ExprKind::Array(exprs) => visit_thin_exprs(vis, exprs),
ExprKind::ConstBlock(anon_const) => {
vis.visit_anon_const(anon_const);
}
@@ -1432,10 +1450,10 @@ pub fn noop_visit_expr(
vis.visit_expr(expr);
vis.visit_anon_const(count);
}
- ExprKind::Tup(exprs) => visit_thin_exprs(exprs, vis),
+ ExprKind::Tup(exprs) => visit_thin_exprs(vis, exprs),
ExprKind::Call(f, args) => {
vis.visit_expr(f);
- visit_thin_exprs(args, vis);
+ visit_thin_exprs(vis, args);
}
ExprKind::MethodCall(box MethodCall {
seg: PathSegment { ident, id, args: seg_args },
@@ -1447,7 +1465,7 @@ pub fn noop_visit_expr(
vis.visit_id(id);
vis.visit_ident(ident);
visit_opt(seg_args, |args| vis.visit_generic_args(args));
- visit_thin_exprs(call_args, vis);
+ visit_thin_exprs(vis, call_args);
vis.visit_span(span);
}
ExprKind::Binary(_binop, lhs, rhs) => {
@@ -1505,12 +1523,10 @@ pub fn noop_visit_expr(
fn_decl_span,
fn_arg_span,
}) => {
- vis.visit_closure_binder(binder);
- visit_constness(constness, vis);
+ visit_constness(vis, constness);
coroutine_kind.as_mut().map(|coroutine_kind| vis.visit_coroutine_kind(coroutine_kind));
vis.visit_capture_by(capture_clause);
- vis.visit_fn_decl(fn_decl);
- vis.visit_expr(body);
+ vis.visit_fn(FnKind::Closure(binder, fn_decl, body), *span, *id);
vis.visit_span(fn_decl_span);
vis.visit_span(fn_arg_span);
}
@@ -1600,23 +1616,23 @@ pub fn noop_visit_expr(
ExprKind::Err(_guar) => {}
ExprKind::Dummy => {}
}
- visit_lazy_tts(tokens, vis);
+ visit_lazy_tts(vis, tokens);
vis.visit_span(span);
}
-pub fn noop_filter_map_expr(mut e: P, vis: &mut T) -> Option
> {
+pub fn noop_filter_map_expr(vis: &mut T, mut e: P) -> Option> {
Some({
vis.visit_expr(&mut e);
e
})
}
-pub fn noop_flat_map_stmt(
- Stmt { kind, mut span, mut id }: Stmt,
+pub fn walk_flat_map_stmt(
vis: &mut T,
+ Stmt { kind, mut span, mut id }: Stmt,
) -> SmallVec<[Stmt; 1]> {
vis.visit_id(&mut id);
- let stmts: SmallVec<_> = noop_flat_map_stmt_kind(kind, vis)
+ let stmts: SmallVec<_> = walk_flat_map_stmt_kind(vis, kind)
.into_iter()
.map(|kind| Stmt { id, kind, span })
.collect();
@@ -1630,7 +1646,7 @@ pub fn noop_flat_map_stmt(
stmts
}
-fn noop_flat_map_stmt_kind(kind: StmtKind, vis: &mut T) -> SmallVec<[StmtKind; 1]> {
+fn walk_flat_map_stmt_kind(vis: &mut T, kind: StmtKind) -> SmallVec<[StmtKind; 1]> {
match kind {
StmtKind::Let(mut local) => smallvec![StmtKind::Let({
vis.visit_local(&mut local);
@@ -1642,15 +1658,15 @@ fn noop_flat_map_stmt_kind(kind: StmtKind, vis: &mut T) -> SmallV
StmtKind::Empty => smallvec![StmtKind::Empty],
StmtKind::MacCall(mut mac) => {
let MacCallStmt { mac: mac_, style: _, attrs, tokens } = mac.deref_mut();
- visit_attrs(attrs, vis);
+ visit_attrs(vis, attrs);
vis.visit_mac_call(mac_);
- visit_lazy_tts(tokens, vis);
+ visit_lazy_tts(vis, tokens);
smallvec![StmtKind::MacCall(mac)]
}
}
}
-fn noop_visit_vis(visibility: &mut Visibility, vis: &mut T) {
+fn walk_vis(vis: &mut T, visibility: &mut Visibility) {
let Visibility { kind, span, tokens } = visibility;
match kind {
VisibilityKind::Public | VisibilityKind::Inherited => {}
@@ -1659,11 +1675,11 @@ fn noop_visit_vis(visibility: &mut Visibility, vis: &mut T) {
vis.visit_path(path);
}
}
- visit_lazy_tts(tokens, vis);
+ visit_lazy_tts(vis, tokens);
vis.visit_span(span);
}
-fn noop_visit_capture_by(capture_by: &mut CaptureBy, vis: &mut T) {
+fn walk_capture_by(vis: &mut T, capture_by: &mut CaptureBy) {
match capture_by {
CaptureBy::Ref => {}
CaptureBy::Value { move_kw } => {
@@ -1767,3 +1783,12 @@ impl DummyAstNode for crate::ast_traits::AstNo
crate::ast_traits::AstNodeWrapper::new(N::dummy(), T::dummy())
}
}
+
+#[derive(Debug)]
+pub enum FnKind<'a> {
+ /// E.g., `fn foo()`, `fn foo(&self)`, or `extern "Abi" fn foo()`.
+ Fn(&'a mut FnSig, &'a mut Generics, &'a mut Option>),
+
+ /// E.g., `|x, y| body`.
+ Closure(&'a mut ClosureBinder, &'a mut P, &'a mut P),
+}
diff --git a/compiler/rustc_ast_lowering/src/path.rs b/compiler/rustc_ast_lowering/src/path.rs
index 6303584bb7846..ac36b07460969 100644
--- a/compiler/rustc_ast_lowering/src/path.rs
+++ b/compiler/rustc_ast_lowering/src/path.rs
@@ -44,13 +44,11 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
let mut res = self.lower_res(base_res);
// When we have an `async` kw on a bound, map the trait it resolves to.
- let mut bound_modifier_allowed_features = None;
if let Some(TraitBoundModifiers { asyncness: BoundAsyncness::Async(_), .. }) = modifiers {
match res {
Res::Def(DefKind::Trait, def_id) => {
- if let Some((async_def_id, features)) = self.map_trait_to_async_trait(def_id) {
+ if let Some(async_def_id) = self.map_trait_to_async_trait(def_id) {
res = Res::Def(DefKind::Trait, async_def_id);
- bound_modifier_allowed_features = Some(features);
} else {
self.dcx().emit_err(AsyncBoundOnlyForFnTraits { span: p.span });
}
@@ -67,6 +65,16 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
}
}
+ // Ungate the `async_fn_traits` feature in the path if the trait is
+ // named via either `async Fn*()` or `AsyncFn*()`.
+ let bound_modifier_allowed_features = if let Res::Def(DefKind::Trait, async_def_id) = res
+ && self.tcx.async_fn_trait_kind_from_def_id(async_def_id).is_some()
+ {
+ Some(self.allow_async_fn_traits.clone())
+ } else {
+ None
+ };
+
let path_span_lo = p.span.shrink_to_lo();
let proj_start = p.segments.len() - unresolved_segments;
let path = self.arena.alloc(hir::Path {
@@ -506,14 +514,14 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
/// This only needs to be done until we unify `AsyncFn` and `Fn` traits into one
/// that is generic over `async`ness, if that's ever possible, or modify the
/// lowering of `async Fn()` bounds to desugar to another trait like `LendingFn`.
- fn map_trait_to_async_trait(&self, def_id: DefId) -> Option<(DefId, Lrc<[Symbol]>)> {
+ fn map_trait_to_async_trait(&self, def_id: DefId) -> Option {
let lang_items = self.tcx.lang_items();
if Some(def_id) == lang_items.fn_trait() {
- Some((lang_items.async_fn_trait()?, self.allow_async_fn_traits.clone()))
+ lang_items.async_fn_trait()
} else if Some(def_id) == lang_items.fn_mut_trait() {
- Some((lang_items.async_fn_mut_trait()?, self.allow_async_fn_traits.clone()))
+ lang_items.async_fn_mut_trait()
} else if Some(def_id) == lang_items.fn_once_trait() {
- Some((lang_items.async_fn_once_trait()?, self.allow_async_fn_traits.clone()))
+ lang_items.async_fn_once_trait()
} else {
None
}
diff --git a/compiler/rustc_ast_passes/messages.ftl b/compiler/rustc_ast_passes/messages.ftl
index ca0b7f2ac3a67..df5c639382f04 100644
--- a/compiler/rustc_ast_passes/messages.ftl
+++ b/compiler/rustc_ast_passes/messages.ftl
@@ -155,8 +155,6 @@ ast_passes_impl_trait_path = `impl Trait` is not allowed in path parameters
ast_passes_incompatible_features = `{$f1}` and `{$f2}` are incompatible, using them at the same time is not allowed
.help = remove one of these features
-ast_passes_incompatible_trait_bound_modifiers = `{$left}` and `{$right}` are mutually exclusive
-
ast_passes_inherent_cannot_be = inherent impls cannot be {$annotation}
.because = {$annotation} because of this
.type = inherent impl for this type
diff --git a/compiler/rustc_ast_passes/src/ast_validation.rs b/compiler/rustc_ast_passes/src/ast_validation.rs
index 34aac6e447304..1088db74cc966 100644
--- a/compiler/rustc_ast_passes/src/ast_validation.rs
+++ b/compiler/rustc_ast_passes/src/ast_validation.rs
@@ -1366,17 +1366,6 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
{
self.dcx().emit_err(errors::TildeConstDisallowed { span, reason });
}
- (
- _,
- BoundConstness::Always(_) | BoundConstness::Maybe(_),
- BoundPolarity::Negative(_) | BoundPolarity::Maybe(_),
- ) => {
- self.dcx().emit_err(errors::IncompatibleTraitBoundModifiers {
- span: bound.span(),
- left: modifiers.constness.as_str(),
- right: modifiers.polarity.as_str(),
- });
- }
_ => {}
}
diff --git a/compiler/rustc_ast_passes/src/errors.rs b/compiler/rustc_ast_passes/src/errors.rs
index 215ccd2ab4d9e..9151c4a7c7c59 100644
--- a/compiler/rustc_ast_passes/src/errors.rs
+++ b/compiler/rustc_ast_passes/src/errors.rs
@@ -656,15 +656,6 @@ pub enum TildeConstReason {
Item,
}
-#[derive(Diagnostic)]
-#[diag(ast_passes_incompatible_trait_bound_modifiers)]
-pub struct IncompatibleTraitBoundModifiers {
- #[primary_span]
- pub span: Span,
- pub left: &'static str,
- pub right: &'static str,
-}
-
#[derive(Diagnostic)]
#[diag(ast_passes_const_and_async)]
pub struct ConstAndAsync {
diff --git a/compiler/rustc_ast_pretty/src/pprust/state.rs b/compiler/rustc_ast_pretty/src/pprust/state.rs
index 0568d368d8c4c..b463d1f36ce51 100644
--- a/compiler/rustc_ast_pretty/src/pprust/state.rs
+++ b/compiler/rustc_ast_pretty/src/pprust/state.rs
@@ -1505,35 +1505,7 @@ impl<'a> State<'a> {
AsmArg::Options(opts) => {
s.word("options");
s.popen();
- let mut options = vec![];
- if opts.contains(InlineAsmOptions::PURE) {
- options.push("pure");
- }
- if opts.contains(InlineAsmOptions::NOMEM) {
- options.push("nomem");
- }
- if opts.contains(InlineAsmOptions::READONLY) {
- options.push("readonly");
- }
- if opts.contains(InlineAsmOptions::PRESERVES_FLAGS) {
- options.push("preserves_flags");
- }
- if opts.contains(InlineAsmOptions::NORETURN) {
- options.push("noreturn");
- }
- if opts.contains(InlineAsmOptions::NOSTACK) {
- options.push("nostack");
- }
- if opts.contains(InlineAsmOptions::ATT_SYNTAX) {
- options.push("att_syntax");
- }
- if opts.contains(InlineAsmOptions::RAW) {
- options.push("raw");
- }
- if opts.contains(InlineAsmOptions::MAY_UNWIND) {
- options.push("may_unwind");
- }
- s.commasep(Inconsistent, &options, |s, &opt| {
+ s.commasep(Inconsistent, &opts.human_readable_names(), |s, &opt| {
s.word(opt);
});
s.pclose();
diff --git a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
index b147567001db1..2d9bc45ebc823 100644
--- a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
@@ -4304,17 +4304,35 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, '_, 'infcx, 'tcx> {
// search for relevant arguments.
let mut arguments = Vec::new();
for (index, argument) in sig.inputs().skip_binder().iter().enumerate() {
- if let ty::Ref(argument_region, _, _) = argument.kind() {
- if argument_region == return_region {
- // Need to use the `rustc_middle::ty` types to compare against the
- // `return_region`. Then use the `rustc_hir` type to get only
- // the lifetime span.
- if let hir::TyKind::Ref(lifetime, _) = &fn_decl.inputs[index].kind {
+ if let ty::Ref(argument_region, _, _) = argument.kind()
+ && argument_region == return_region
+ {
+ // Need to use the `rustc_middle::ty` types to compare against the
+ // `return_region`. Then use the `rustc_hir` type to get only
+ // the lifetime span.
+ match &fn_decl.inputs[index].kind {
+ hir::TyKind::Ref(lifetime, _) => {
// With access to the lifetime, we can get
// the span of it.
arguments.push((*argument, lifetime.ident.span));
- } else {
- bug!("ty type is a ref but hir type is not");
+ }
+ // Resolve `self` whose self type is `&T`.
+ hir::TyKind::Path(hir::QPath::Resolved(None, path)) => {
+ if let Res::SelfTyAlias { alias_to, .. } = path.res
+ && let Some(alias_to) = alias_to.as_local()
+ && let hir::Impl { self_ty, .. } = self
+ .infcx
+ .tcx
+ .hir_node_by_def_id(alias_to)
+ .expect_item()
+ .expect_impl()
+ && let hir::TyKind::Ref(lifetime, _) = self_ty.kind
+ {
+ arguments.push((*argument, lifetime.ident.span));
+ }
+ }
+ _ => {
+ // Don't ICE though. It might be a type alias.
}
}
}
diff --git a/compiler/rustc_builtin_macros/src/asm.rs b/compiler/rustc_builtin_macros/src/asm.rs
index dd0f9aaf22104..b8fe6338493d0 100644
--- a/compiler/rustc_builtin_macros/src/asm.rs
+++ b/compiler/rustc_builtin_macros/src/asm.rs
@@ -459,7 +459,7 @@ fn expand_preparsed_asm(
for (i, template_expr) in args.templates.into_iter().enumerate() {
if i != 0 {
- template.push(ast::InlineAsmTemplatePiece::String("\n".to_string()));
+ template.push(ast::InlineAsmTemplatePiece::String("\n".into()));
}
let msg = "asm template must be a string literal";
@@ -527,7 +527,7 @@ fn expand_preparsed_asm(
// Don't treat raw asm as a format string.
if args.options.contains(ast::InlineAsmOptions::RAW) {
- template.push(ast::InlineAsmTemplatePiece::String(template_str.to_string()));
+ template.push(ast::InlineAsmTemplatePiece::String(template_str.to_string().into()));
let template_num_lines = 1 + template_str.matches('\n').count();
line_spans.extend(std::iter::repeat(template_sp).take(template_num_lines));
continue;
@@ -577,7 +577,7 @@ fn expand_preparsed_asm(
for piece in unverified_pieces {
match piece {
parse::Piece::String(s) => {
- template.push(ast::InlineAsmTemplatePiece::String(s.to_string()))
+ template.push(ast::InlineAsmTemplatePiece::String(s.to_string().into()))
}
parse::Piece::NextArgument(arg) => {
let span = arg_spans.next().unwrap_or(template_sp);
diff --git a/compiler/rustc_builtin_macros/src/cfg_eval.rs b/compiler/rustc_builtin_macros/src/cfg_eval.rs
index b09975c0ba79e..b3d252e06a587 100644
--- a/compiler/rustc_builtin_macros/src/cfg_eval.rs
+++ b/compiler/rustc_builtin_macros/src/cfg_eval.rs
@@ -4,7 +4,7 @@ use core::ops::ControlFlow;
use rustc_ast as ast;
use rustc_ast::mut_visit::MutVisitor;
use rustc_ast::ptr::P;
-use rustc_ast::visit::Visitor;
+use rustc_ast::visit::{AssocCtxt, Visitor};
use rustc_ast::NodeId;
use rustc_ast::{mut_visit, visit};
use rustc_ast::{Attribute, HasAttrs, HasTokens};
@@ -53,11 +53,8 @@ fn flat_map_annotatable(
) -> Option