diff options
Diffstat (limited to 'compiler/rustc_parse/src/parser')
| -rw-r--r-- | compiler/rustc_parse/src/parser/attr.rs | 24 | ||||
| -rw-r--r-- | compiler/rustc_parse/src/parser/diagnostics.rs | 14 | ||||
| -rw-r--r-- | compiler/rustc_parse/src/parser/expr.rs | 20 | ||||
| -rw-r--r-- | compiler/rustc_parse/src/parser/item.rs | 59 | ||||
| -rw-r--r-- | compiler/rustc_parse/src/parser/mod.rs | 75 | ||||
| -rw-r--r-- | compiler/rustc_parse/src/parser/nonterminal.rs | 16 | ||||
| -rw-r--r-- | compiler/rustc_parse/src/parser/pat.rs | 8 | ||||
| -rw-r--r-- | compiler/rustc_parse/src/parser/stmt.rs | 15 | ||||
| -rw-r--r-- | compiler/rustc_parse/src/parser/ty.rs | 4 |
9 files changed, 120 insertions, 115 deletions
diff --git a/compiler/rustc_parse/src/parser/attr.rs b/compiler/rustc_parse/src/parser/attr.rs index 612accf3e3b..0ed24fe849c 100644 --- a/compiler/rustc_parse/src/parser/attr.rs +++ b/compiler/rustc_parse/src/parser/attr.rs @@ -55,7 +55,7 @@ impl<'a> Parser<'a> { let span = self.token.span; let mut err = self.sess.span_diagnostic.struct_span_err_with_code( span, - fluent::parser_inner_doc_comment_not_permitted, + fluent::parse_inner_doc_comment_not_permitted, error_code!(E0753), ); if let Some(replacement_span) = self.annotate_following_item_if_applicable( @@ -200,7 +200,7 @@ impl<'a> Parser<'a> { Some(InnerAttrForbiddenReason::AfterOuterDocComment { prev_doc_comment_span }) => { let mut diag = self.struct_span_err( attr_sp, - fluent::parser_inner_attr_not_permitted_after_outer_doc_comment, + fluent::parse_inner_attr_not_permitted_after_outer_doc_comment, ); diag.span_label(attr_sp, fluent::label_attr) .span_label(prev_doc_comment_span, fluent::label_prev_doc_comment); @@ -209,18 +209,18 @@ impl<'a> Parser<'a> { Some(InnerAttrForbiddenReason::AfterOuterAttribute { prev_outer_attr_sp }) => { let mut diag = self.struct_span_err( attr_sp, - fluent::parser_inner_attr_not_permitted_after_outer_attr, + fluent::parse_inner_attr_not_permitted_after_outer_attr, ); diag.span_label(attr_sp, fluent::label_attr) .span_label(prev_outer_attr_sp, fluent::label_prev_attr); diag } Some(InnerAttrForbiddenReason::InCodeBlock) | None => { - self.struct_span_err(attr_sp, fluent::parser_inner_attr_not_permitted) + self.struct_span_err(attr_sp, fluent::parse_inner_attr_not_permitted) } }; - diag.note(fluent::parser_inner_attr_explanation); + diag.note(fluent::parse_inner_attr_explanation); if self .annotate_following_item_if_applicable( &mut diag, @@ -229,7 +229,7 @@ impl<'a> Parser<'a> { ) .is_some() { - diag.note(fluent::parser_outer_attr_explanation); + diag.note(fluent::parse_outer_attr_explanation); }; diag.emit(); } @@ -245,9 +245,9 @@ impl<'a> Parser<'a> { /// PATH `=` UNSUFFIXED_LIT /// The delimiters or `=` are still put into the resulting token stream. pub fn parse_attr_item(&mut self, capture_tokens: bool) -> PResult<'a, ast::AttrItem> { - let item = match self.token.kind { - token::Interpolated(ref nt) => match **nt { - Nonterminal::NtMeta(ref item) => Some(item.clone().into_inner()), + let item = match &self.token.kind { + token::Interpolated(nt) => match &**nt { + Nonterminal::NtMeta(item) => Some(item.clone().into_inner()), _ => None, }, _ => None, @@ -364,9 +364,9 @@ impl<'a> Parser<'a> { /// meta_item_inner : (meta_item | UNSUFFIXED_LIT) (',' meta_item_inner)? ; /// ``` pub fn parse_meta_item(&mut self) -> PResult<'a, ast::MetaItem> { - let nt_meta = match self.token.kind { - token::Interpolated(ref nt) => match **nt { - token::NtMeta(ref e) => Some(e.clone()), + let nt_meta = match &self.token.kind { + token::Interpolated(nt) => match &**nt { + token::NtMeta(e) => Some(e.clone()), _ => None, }, _ => None, diff --git a/compiler/rustc_parse/src/parser/diagnostics.rs b/compiler/rustc_parse/src/parser/diagnostics.rs index 2558ac801ad..3f5baf343c9 100644 --- a/compiler/rustc_parse/src/parser/diagnostics.rs +++ b/compiler/rustc_parse/src/parser/diagnostics.rs @@ -937,7 +937,7 @@ impl<'a> Parser<'a> { if self.eat(&token::Gt) { e.span_suggestion_verbose( binop.span.shrink_to_lo(), - fluent::parser_sugg_turbofish_syntax, + fluent::parse_sugg_turbofish_syntax, "::", Applicability::MaybeIncorrect, ) @@ -973,7 +973,7 @@ impl<'a> Parser<'a> { inner_op: &Expr, outer_op: &Spanned<AssocOp>, ) -> bool /* advanced the cursor */ { - if let ExprKind::Binary(op, ref l1, ref r1) = inner_op.kind { + if let ExprKind::Binary(op, l1, r1) = &inner_op.kind { if let ExprKind::Field(_, ident) = l1.kind && ident.as_str().parse::<i32>().is_err() && !matches!(r1.kind, ExprKind::Lit(_)) @@ -1079,8 +1079,8 @@ impl<'a> Parser<'a> { let mk_err_expr = |this: &Self, span| Ok(Some(this.mk_expr(span, ExprKind::Err))); - match inner_op.kind { - ExprKind::Binary(op, ref l1, ref r1) if op.node.is_comparison() => { + match &inner_op.kind { + ExprKind::Binary(op, l1, r1) if op.node.is_comparison() => { let mut err = ComparisonOperatorsCannotBeChained { span: vec![op.span, self.prev_token.span], suggest_turbofish: None, @@ -1237,8 +1237,8 @@ impl<'a> Parser<'a> { let bounds = self.parse_generic_bounds(None)?; let sum_span = ty.span.to(self.prev_token.span); - let sub = match ty.kind { - TyKind::Rptr(ref lifetime, ref mut_ty) => { + let sub = match &ty.kind { + TyKind::Rptr(lifetime, mut_ty) => { let sum_with_parens = pprust::to_string(|s| { s.s.word("&"); s.print_opt_lifetime(lifetime); @@ -2565,7 +2565,7 @@ impl<'a> Parser<'a> { if let [a, b] = segments { let (a_span, b_span) = (a.span(), b.span()); let between_span = a_span.shrink_to_hi().to(b_span.shrink_to_lo()); - if self.span_to_snippet(between_span).as_ref().map(|a| &a[..]) == Ok(":: ") { + if self.span_to_snippet(between_span).as_deref() == Ok(":: ") { return Err(DoubleColonInBound { span: path.span.shrink_to_hi(), between: between_span, diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs index 9f680a60613..9f2267efb82 100644 --- a/compiler/rustc_parse/src/parser/expr.rs +++ b/compiler/rustc_parse/src/parser/expr.rs @@ -414,7 +414,7 @@ impl<'a> Parser<'a> { self.sess.ambiguous_block_expr_parse.borrow_mut().insert(sp, lhs.span); false } - (true, Some(ref op)) if !op.can_continue_expr_unambiguously() => false, + (true, Some(op)) if !op.can_continue_expr_unambiguously() => false, (true, Some(_)) => { self.error_found_expr_would_be_stmt(lhs); true @@ -1501,7 +1501,7 @@ impl<'a> Parser<'a> { let lo = path.span; let mac = P(MacCall { path, - args: self.parse_mac_args()?, + args: self.parse_delim_args()?, prior_type_ascription: self.last_type_ascription, }); (lo.to(self.prev_token.span), ExprKind::MacCall(mac)) @@ -1728,13 +1728,13 @@ impl<'a> Parser<'a> { || !self.restrictions.contains(Restrictions::NO_STRUCT_LITERAL) { let expr = self.parse_expr_opt()?; - if let Some(ref expr) = expr { + if let Some(expr) = &expr { if label.is_some() && matches!( expr.kind, ExprKind::While(_, _, None) | ExprKind::ForLoop(_, _, _, None) - | ExprKind::Loop(_, None) + | ExprKind::Loop(_, None, _) | ExprKind::Block(_, None) ) { @@ -2078,12 +2078,7 @@ impl<'a> Parser<'a> { if self.token.kind == TokenKind::Semi && matches!(self.token_cursor.frame.delim_sp, Some((Delimiter::Parenthesis, _))) - // HACK: This is needed so we can detect whether we're inside a macro, - // where regular assumptions about what tokens can follow other tokens - // don't necessarily apply. && self.may_recover() - // FIXME(Nilstrieb): Remove this check once `may_recover` actually stops recovery - && self.subparser_name.is_none() { // It is likely that the closure body is a block but where the // braces have been removed. We will recover and eat the next @@ -2449,10 +2444,11 @@ impl<'a> Parser<'a> { /// Parses `loop { ... }` (`loop` token already eaten). fn parse_loop_expr(&mut self, opt_label: Option<Label>, lo: Span) -> PResult<'a, P<Expr>> { + let loop_span = self.prev_token.span; let (attrs, body) = self.parse_inner_attrs_and_block()?; Ok(self.mk_expr_with_attrs( lo.to(self.prev_token.span), - ExprKind::Loop(body, opt_label), + ExprKind::Loop(body, opt_label, loop_span), attrs, )) } @@ -2595,8 +2591,8 @@ impl<'a> Parser<'a> { // Used to check the `let_chains` and `if_let_guard` features mostly by scanning // `&&` tokens. fn check_let_expr(expr: &Expr) -> (bool, bool) { - match expr.kind { - ExprKind::Binary(BinOp { node: BinOpKind::And, .. }, ref lhs, ref rhs) => { + match &expr.kind { + ExprKind::Binary(BinOp { node: BinOpKind::And, .. }, lhs, rhs) => { let lhs_rslt = check_let_expr(lhs); let rhs_rslt = check_let_expr(rhs); (lhs_rslt.0 || rhs_rslt.0, false) diff --git a/compiler/rustc_parse/src/parser/item.rs b/compiler/rustc_parse/src/parser/item.rs index e5f58ca3894..767fb9378be 100644 --- a/compiler/rustc_parse/src/parser/item.rs +++ b/compiler/rustc_parse/src/parser/item.rs @@ -13,7 +13,7 @@ use rustc_ast::{Async, Const, Defaultness, IsAuto, Mutability, Unsafe, UseTree, 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}; +use rustc_ast::{MacCall, MacDelimiter}; use rustc_ast_pretty::pprust; use rustc_errors::{struct_span_err, Applicability, IntoDiagnostic, PResult, StashKey}; use rustc_span::edition::Edition; @@ -222,7 +222,8 @@ impl<'a> Parser<'a> { self.parse_use_item()? } else if self.check_fn_front_matter(def_final, case) { // FUNCTION ITEM - let (ident, sig, generics, body) = self.parse_fn(attrs, fn_parse_mode, lo, vis)?; + let (ident, sig, generics, body) = + self.parse_fn(attrs, fn_parse_mode, lo, vis, case)?; (ident, ItemKind::Fn(Box::new(Fn { defaultness: def_(), sig, generics, body }))) } else if self.eat_keyword(kw::Extern) { if self.eat_keyword(kw::Crate) { @@ -471,7 +472,7 @@ impl<'a> Parser<'a> { fn parse_item_macro(&mut self, vis: &Visibility) -> PResult<'a, MacCall> { let path = self.parse_path(PathStyle::Mod)?; // `foo::bar` self.expect(&token::Not)?; // `!` - match self.parse_mac_args() { + match self.parse_delim_args() { // `( .. )` or `[ .. ]` (followed by `;`), or `{ .. }`. Ok(args) => { self.eat_semi_for_macro_if_needed(&args); @@ -1255,8 +1256,8 @@ impl<'a> Parser<'a> { } }; - match impl_info.1 { - ItemKind::Impl(box Impl { of_trait: Some(ref trai), ref mut constness, .. }) => { + match &mut impl_info.1 { + ItemKind::Impl(box Impl { of_trait: Some(trai), constness, .. }) => { *constness = Const::Yes(const_span); let before_trait = trai.path.span.shrink_to_lo(); @@ -1793,7 +1794,13 @@ impl<'a> Parser<'a> { }; // We use `parse_fn` to get a span for the function let fn_parse_mode = FnParseMode { req_name: |_| true, req_body: true }; - match self.parse_fn(&mut AttrVec::new(), fn_parse_mode, lo, &inherited_vis) { + match self.parse_fn( + &mut AttrVec::new(), + fn_parse_mode, + lo, + &inherited_vis, + Case::Insensitive, + ) { Ok(_) => { let mut err = self.struct_span_err( lo.to(self.prev_token.span), @@ -1867,7 +1874,7 @@ impl<'a> Parser<'a> { fn parse_item_decl_macro(&mut self, lo: Span) -> PResult<'a, ItemInfo> { let ident = self.parse_ident()?; let body = if self.check(&token::OpenDelim(Delimiter::Brace)) { - self.parse_mac_args()? // `MacBody` + self.parse_delim_args()? // `MacBody` } else if self.check(&token::OpenDelim(Delimiter::Parenthesis)) { let params = self.parse_token_tree(); // `MacParams` let pspan = params.span(); @@ -1880,7 +1887,7 @@ impl<'a> Parser<'a> { let arrow = TokenTree::token_alone(token::FatArrow, pspan.between(bspan)); // `=>` let tokens = TokenStream::new(vec![params, arrow, body]); let dspan = DelimSpan::from_pair(pspan.shrink_to_lo(), bspan.shrink_to_hi()); - P(MacArgs::Delimited(dspan, MacDelimiter::Brace, tokens)) + P(DelimArgs { dspan, delim: MacDelimiter::Brace, tokens }) } else { return self.unexpected(); }; @@ -1935,7 +1942,7 @@ impl<'a> Parser<'a> { .emit(); } - let body = self.parse_mac_args()?; + let body = self.parse_delim_args()?; self.eat_semi_for_macro_if_needed(&body); self.complain_if_pub_macro(vis, true); @@ -1974,14 +1981,14 @@ impl<'a> Parser<'a> { } } - fn eat_semi_for_macro_if_needed(&mut self, args: &MacArgs) { + fn eat_semi_for_macro_if_needed(&mut self, args: &DelimArgs) { if args.need_semicolon() && !self.eat(&token::Semi) { self.report_invalid_macro_expansion_item(args); } } - fn report_invalid_macro_expansion_item(&self, args: &MacArgs) { - let span = args.span().expect("undelimited macro call"); + fn report_invalid_macro_expansion_item(&self, args: &DelimArgs) { + let span = args.dspan.entire(); let mut err = self.struct_span_err( span, "macros that expand to items must be delimited with braces or followed by a semicolon", @@ -1990,10 +1997,7 @@ impl<'a> Parser<'a> { // macros within the same crate (that we can fix), which is sad. if !span.from_expansion() { if self.unclosed_delims.is_empty() { - let DelimSpan { open, close } = match args { - MacArgs::Empty | MacArgs::Eq(..) => unreachable!(), - MacArgs::Delimited(dspan, ..) => *dspan, - }; + let DelimSpan { open, close } = args.dspan; err.multipart_suggestion( "change the delimiters to curly braces", vec![(open, "{".to_string()), (close, '}'.to_string())], @@ -2117,8 +2121,9 @@ impl<'a> Parser<'a> { fn_parse_mode: FnParseMode, sig_lo: Span, vis: &Visibility, + case: Case, ) -> PResult<'a, (Ident, FnSig, Generics, Option<P<Block>>)> { - let header = self.parse_fn_front_matter(vis)?; // `const ... fn` + let header = self.parse_fn_front_matter(vis, case)?; // `const ... fn` let ident = self.parse_ident()?; // `foo` let mut generics = self.parse_generics()?; // `<'a, T, ...>` let decl = @@ -2242,24 +2247,28 @@ impl<'a> Parser<'a> { /// /// `vis` represents the visibility that was already parsed, if any. Use /// `Visibility::Inherited` when no visibility is known. - pub(super) fn parse_fn_front_matter(&mut self, orig_vis: &Visibility) -> PResult<'a, FnHeader> { + pub(super) fn parse_fn_front_matter( + &mut self, + orig_vis: &Visibility, + case: Case, + ) -> PResult<'a, FnHeader> { let sp_start = self.token.span; - let constness = self.parse_constness(Case::Insensitive); + let constness = self.parse_constness(case); let async_start_sp = self.token.span; - let asyncness = self.parse_asyncness(Case::Insensitive); + let asyncness = self.parse_asyncness(case); let unsafe_start_sp = self.token.span; - let unsafety = self.parse_unsafety(Case::Insensitive); + let unsafety = self.parse_unsafety(case); let ext_start_sp = self.token.span; - let ext = self.parse_extern(Case::Insensitive); + let ext = self.parse_extern(case); if let Async::Yes { span, .. } = asyncness { self.ban_async_in_2015(span); } - if !self.eat_keyword_case(kw::Fn, Case::Insensitive) { + if !self.eat_keyword_case(kw::Fn, case) { // It is possible for `expect_one_of` to recover given the contents of // `self.expected_tokens`, therefore, do not use `self.unexpected()` which doesn't // account for this. @@ -2588,8 +2597,8 @@ impl<'a> Parser<'a> { } fn is_named_param(&self) -> bool { - let offset = match self.token.kind { - token::Interpolated(ref nt) => match **nt { + let offset = match &self.token.kind { + token::Interpolated(nt) => match **nt { token::NtPat(..) => return self.look_ahead(1, |t| t == &token::Colon), _ => 0, }, diff --git a/compiler/rustc_parse/src/parser/mod.rs b/compiler/rustc_parse/src/parser/mod.rs index 13a38a17735..4d8bff28b05 100644 --- a/compiler/rustc_parse/src/parser/mod.rs +++ b/compiler/rustc_parse/src/parser/mod.rs @@ -25,8 +25,8 @@ use rustc_ast::tokenstream::{TokenStream, TokenTree}; use rustc_ast::util::case::Case; use rustc_ast::AttrId; use rustc_ast::DUMMY_NODE_ID; -use rustc_ast::{self as ast, AnonConst, AttrStyle, AttrVec, Const, Extern}; -use rustc_ast::{Async, Expr, ExprKind, MacArgs, MacArgsEq, MacDelimiter, Mutability, StrLit}; +use rustc_ast::{self as ast, AnonConst, AttrStyle, AttrVec, Const, DelimArgs, Extern}; +use rustc_ast::{Async, AttrArgs, AttrArgsEq, Expr, ExprKind, MacDelimiter, Mutability, StrLit}; use rustc_ast::{HasAttrs, HasTokens, Unsafe, Visibility, VisibilityKind}; use rustc_ast_pretty::pprust; use rustc_data_structures::fx::FxHashMap; @@ -384,8 +384,8 @@ enum TokenType { impl TokenType { fn to_string(&self) -> String { - match *self { - TokenType::Token(ref t) => format!("`{}`", pprust::token_kind_to_string(t)), + match self { + TokenType::Token(t) => format!("`{}`", pprust::token_kind_to_string(t)), TokenType::Keyword(kw) => format!("`{}`", kw), TokenType::Operator => "an operator".to_string(), TokenType::Lifetime => "lifetime".to_string(), @@ -738,8 +738,8 @@ impl<'a> Parser<'a> { fn check_inline_const(&self, dist: usize) -> bool { self.is_keyword_ahead(dist, &[kw::Const]) - && self.look_ahead(dist + 1, |t| match t.kind { - token::Interpolated(ref nt) => matches!(**nt, token::NtBlock(..)), + && self.look_ahead(dist + 1, |t| match &t.kind { + token::Interpolated(nt) => matches!(**nt, token::NtBlock(..)), token::OpenDelim(Delimiter::Brace) => true, _ => false, }) @@ -860,7 +860,7 @@ impl<'a> Parser<'a> { if let token::CloseDelim(..) | token::Eof = self.token.kind { break; } - if let Some(ref t) = sep.sep { + if let Some(t) = &sep.sep { if first { first = false; } else { @@ -895,7 +895,7 @@ impl<'a> Parser<'a> { _ => { // Attempt to keep parsing if it was a similar separator. - if let Some(ref tokens) = t.similar_tokens() { + if let Some(tokens) = t.similar_tokens() { if tokens.contains(&self.token.kind) && !unclosed_delims { self.bump(); } @@ -1249,39 +1249,40 @@ impl<'a> Parser<'a> { } } - fn parse_mac_args(&mut self) -> PResult<'a, P<MacArgs>> { - self.parse_mac_args_common(true).map(P) + fn parse_delim_args(&mut self) -> PResult<'a, P<DelimArgs>> { + if let Some(args) = self.parse_delim_args_inner() { Ok(P(args)) } else { self.unexpected() } } - fn parse_attr_args(&mut self) -> PResult<'a, MacArgs> { - self.parse_mac_args_common(false) + fn parse_attr_args(&mut self) -> PResult<'a, AttrArgs> { + Ok(if let Some(args) = self.parse_delim_args_inner() { + AttrArgs::Delimited(args) + } else { + if self.eat(&token::Eq) { + let eq_span = self.prev_token.span; + AttrArgs::Eq(eq_span, AttrArgsEq::Ast(self.parse_expr_force_collect()?)) + } else { + AttrArgs::Empty + } + }) } - fn parse_mac_args_common(&mut self, delimited_only: bool) -> PResult<'a, MacArgs> { - Ok( - if self.check(&token::OpenDelim(Delimiter::Parenthesis)) - || self.check(&token::OpenDelim(Delimiter::Bracket)) - || self.check(&token::OpenDelim(Delimiter::Brace)) - { - match self.parse_token_tree() { - TokenTree::Delimited(dspan, delim, tokens) => - // We've confirmed above that there is a delimiter so unwrapping is OK. - { - MacArgs::Delimited(dspan, MacDelimiter::from_token(delim).unwrap(), tokens) - } - _ => unreachable!(), - } - } else if !delimited_only { - if self.eat(&token::Eq) { - let eq_span = self.prev_token.span; - MacArgs::Eq(eq_span, MacArgsEq::Ast(self.parse_expr_force_collect()?)) - } else { - MacArgs::Empty - } - } else { - return self.unexpected(); - }, - ) + fn parse_delim_args_inner(&mut self) -> Option<DelimArgs> { + if self.check(&token::OpenDelim(Delimiter::Parenthesis)) + || self.check(&token::OpenDelim(Delimiter::Bracket)) + || self.check(&token::OpenDelim(Delimiter::Brace)) + { + match self.parse_token_tree() { + // We've confirmed above that there is a delimiter so unwrapping is OK. + TokenTree::Delimited(dspan, delim, tokens) => Some(DelimArgs { + dspan, + delim: MacDelimiter::from_token(delim).unwrap(), + tokens, + }), + _ => unreachable!(), + } + } else { + None + } } fn parse_or_use_outer_attributes( diff --git a/compiler/rustc_parse/src/parser/nonterminal.rs b/compiler/rustc_parse/src/parser/nonterminal.rs index 103dd801257..239ed79ce2f 100644 --- a/compiler/rustc_parse/src/parser/nonterminal.rs +++ b/compiler/rustc_parse/src/parser/nonterminal.rs @@ -42,9 +42,9 @@ impl<'a> Parser<'a> { token::Comma | token::Ident(..) | token::Interpolated(..) => true, _ => token.can_begin_type(), }, - NonterminalKind::Block => match token.kind { + NonterminalKind::Block => match &token.kind { token::OpenDelim(Delimiter::Brace) => true, - token::Interpolated(ref nt) => !matches!( + token::Interpolated(nt) => !matches!( **nt, token::NtItem(_) | token::NtPat(_) @@ -56,16 +56,16 @@ impl<'a> Parser<'a> { ), _ => false, }, - NonterminalKind::Path | NonterminalKind::Meta => match token.kind { + NonterminalKind::Path | NonterminalKind::Meta => match &token.kind { token::ModSep | token::Ident(..) => true, - token::Interpolated(ref nt) => match **nt { + token::Interpolated(nt) => match **nt { token::NtPath(_) | token::NtMeta(_) => true, _ => may_be_ident(&nt), }, _ => false, }, NonterminalKind::PatParam { .. } | NonterminalKind::PatWithOr { .. } => { - match token.kind { + match &token.kind { token::Ident(..) | // box, ref, mut, and other identifiers (can stricten) token::OpenDelim(Delimiter::Parenthesis) | // tuple pattern token::OpenDelim(Delimiter::Bracket) | // slice pattern @@ -80,13 +80,13 @@ impl<'a> Parser<'a> { token::BinOp(token::Shl) => true, // path (double UFCS) // leading vert `|` or-pattern token::BinOp(token::Or) => matches!(kind, NonterminalKind::PatWithOr {..}), - token::Interpolated(ref nt) => may_be_ident(nt), + token::Interpolated(nt) => may_be_ident(nt), _ => false, } } - NonterminalKind::Lifetime => match token.kind { + NonterminalKind::Lifetime => match &token.kind { token::Lifetime(_) => true, - token::Interpolated(ref nt) => { + token::Interpolated(nt) => { matches!(**nt, token::NtLifetime(_)) } _ => false, diff --git a/compiler/rustc_parse/src/parser/pat.rs b/compiler/rustc_parse/src/parser/pat.rs index 0e202645a39..cbeec951e2d 100644 --- a/compiler/rustc_parse/src/parser/pat.rs +++ b/compiler/rustc_parse/src/parser/pat.rs @@ -485,7 +485,7 @@ impl<'a> Parser<'a> { let mut rhs = self.parse_pat_no_top_alt(None)?; let sp = lhs.span.to(rhs.span); - if let PatKind::Ident(_, _, ref mut sub @ None) = rhs.kind { + if let PatKind::Ident(_, _, sub @ None) = &mut rhs.kind { // The user inverted the order, so help them fix that. let mut applicability = Applicability::MachineApplicable; // FIXME(bindings_after_at): Remove this code when stabilizing the feature. @@ -595,7 +595,7 @@ impl<'a> Parser<'a> { self.recover_additional_muts(); // Make sure we don't allow e.g. `let mut $p;` where `$p:pat`. - if let token::Interpolated(ref nt) = self.token.kind { + if let token::Interpolated(nt) = &self.token.kind { if let token::NtPat(_) = **nt { self.expected_ident_found().emit(); } @@ -693,7 +693,7 @@ impl<'a> Parser<'a> { /// Parse macro invocation fn parse_pat_mac_invoc(&mut self, path: Path) -> PResult<'a, PatKind> { self.bump(); - let args = self.parse_mac_args()?; + let args = self.parse_delim_args()?; let mac = P(MacCall { path, args, prior_type_ascription: self.last_type_ascription }); Ok(PatKind::MacCall(mac)) } @@ -796,7 +796,7 @@ impl<'a> Parser<'a> { /// expression syntax `...expr` for splatting in expressions. fn parse_pat_range_to(&mut self, mut re: Spanned<RangeEnd>) -> PResult<'a, PatKind> { let end = self.parse_pat_range_end()?; - if let RangeEnd::Included(ref mut syn @ RangeSyntax::DotDotDot) = &mut re.node { + if let RangeEnd::Included(syn @ RangeSyntax::DotDotDot) = &mut re.node { *syn = RangeSyntax::DotDotEq; self.struct_span_err(re.span, "range-to patterns with `...` are not allowed") .span_suggestion_short( diff --git a/compiler/rustc_parse/src/parser/stmt.rs b/compiler/rustc_parse/src/parser/stmt.rs index 7820bbc1789..1b56cd72db0 100644 --- a/compiler/rustc_parse/src/parser/stmt.rs +++ b/compiler/rustc_parse/src/parser/stmt.rs @@ -167,14 +167,13 @@ impl<'a> Parser<'a> { /// Parses a statement macro `mac!(args)` provided a `path` representing `mac`. /// At this point, the `!` token after the path has already been eaten. fn parse_stmt_mac(&mut self, lo: Span, attrs: AttrVec, path: ast::Path) -> PResult<'a, Stmt> { - let args = self.parse_mac_args()?; - let delim = args.delim(); + let args = self.parse_delim_args()?; + let delim = args.delim.to_token(); let hi = self.prev_token.span; let style = match delim { - Some(Delimiter::Brace) => MacStmtStyle::Braces, - Some(_) => MacStmtStyle::NoBraces, - None => unreachable!(), + Delimiter::Brace => MacStmtStyle::Braces, + _ => MacStmtStyle::NoBraces, }; let mac = P(MacCall { path, args, prior_type_ascription: self.last_type_ascription }); @@ -564,9 +563,9 @@ impl<'a> Parser<'a> { }; let mut eat_semi = true; - match stmt.kind { + match &mut stmt.kind { // Expression without semicolon. - StmtKind::Expr(ref mut expr) + StmtKind::Expr(expr) if self.token != token::Eof && classify::expr_requires_semi_to_be_stmt(expr) => { // Just check for errors and recover; do not eat semicolon yet. // `expect_one_of` returns PResult<'a, bool /* recovered */> @@ -612,7 +611,7 @@ impl<'a> Parser<'a> { } } StmtKind::Expr(_) | StmtKind::MacCall(_) => {} - StmtKind::Local(ref mut local) if let Err(e) = self.expect_semi() => { + StmtKind::Local(local) if let Err(e) = self.expect_semi() => { // We might be at the `,` in `let x = foo<bar, baz>;`. Try to recover. match &mut local.kind { LocalKind::Init(expr) | LocalKind::InitElse(expr, _) => { diff --git a/compiler/rustc_parse/src/parser/ty.rs b/compiler/rustc_parse/src/parser/ty.rs index d6854f07025..b7206b57642 100644 --- a/compiler/rustc_parse/src/parser/ty.rs +++ b/compiler/rustc_parse/src/parser/ty.rs @@ -536,7 +536,7 @@ impl<'a> Parser<'a> { }; let span_start = self.token.span; let ast::FnHeader { ext, unsafety, constness, asyncness } = - self.parse_fn_front_matter(&inherited_vis)?; + self.parse_fn_front_matter(&inherited_vis, Case::Sensitive)?; if self.may_recover() && self.token.kind == TokenKind::Lt { self.recover_fn_ptr_with_generics(lo, &mut params, param_insertion_point)?; } @@ -665,7 +665,7 @@ impl<'a> Parser<'a> { // Macro invocation in type position Ok(TyKind::MacCall(P(MacCall { path, - args: self.parse_mac_args()?, + args: self.parse_delim_args()?, prior_type_ascription: self.last_type_ascription, }))) } else if allow_plus == AllowPlus::Yes && self.check_plus() { |