diff options
Diffstat (limited to 'compiler/rustc_parse/src')
| -rw-r--r-- | compiler/rustc_parse/src/lexer/tokentrees.rs | 2 | ||||
| -rw-r--r-- | compiler/rustc_parse/src/parser/diagnostics.rs | 33 | ||||
| -rw-r--r-- | compiler/rustc_parse/src/parser/expr.rs | 2 | ||||
| -rw-r--r-- | compiler/rustc_parse/src/parser/item.rs | 44 | ||||
| -rw-r--r-- | compiler/rustc_parse/src/parser/stmt.rs | 4 |
5 files changed, 47 insertions, 38 deletions
diff --git a/compiler/rustc_parse/src/lexer/tokentrees.rs b/compiler/rustc_parse/src/lexer/tokentrees.rs index b5a5a2a90ee..eabe0226b2f 100644 --- a/compiler/rustc_parse/src/lexer/tokentrees.rs +++ b/compiler/rustc_parse/src/lexer/tokentrees.rs @@ -241,7 +241,7 @@ impl<'psess, 'src> TokenTreesReader<'psess, 'src> { // we have no way of tracking this in the lexer itself, so we piggyback on the parser let mut in_cond = false; while parser.token != token::Eof { - if let Err(diff_err) = parser.err_diff_marker() { + if let Err(diff_err) = parser.err_vcs_conflict_marker() { diff_errs.push(diff_err); } else if parser.is_keyword_ahead(0, &[kw::If, kw::While]) { in_cond = true; diff --git a/compiler/rustc_parse/src/parser/diagnostics.rs b/compiler/rustc_parse/src/parser/diagnostics.rs index 46809847fdb..ac12787f2ef 100644 --- a/compiler/rustc_parse/src/parser/diagnostics.rs +++ b/compiler/rustc_parse/src/parser/diagnostics.rs @@ -2954,13 +2954,23 @@ impl<'a> Parser<'a> { err } - pub fn is_diff_marker(&mut self, long_kind: &TokenKind, short_kind: &TokenKind) -> bool { + /// This checks if this is a conflict marker, depending of the parameter passed. + /// + /// * `>>>>>` + /// * `=====` + /// * `<<<<<` + /// + pub fn is_vcs_conflict_marker( + &mut self, + long_kind: &TokenKind, + short_kind: &TokenKind, + ) -> bool { (0..3).all(|i| self.look_ahead(i, |tok| tok == long_kind)) && self.look_ahead(3, |tok| tok == short_kind) } - fn diff_marker(&mut self, long_kind: &TokenKind, short_kind: &TokenKind) -> Option<Span> { - if self.is_diff_marker(long_kind, short_kind) { + fn conflict_marker(&mut self, long_kind: &TokenKind, short_kind: &TokenKind) -> Option<Span> { + if self.is_vcs_conflict_marker(long_kind, short_kind) { let lo = self.token.span; for _ in 0..4 { self.bump(); @@ -2970,15 +2980,16 @@ impl<'a> Parser<'a> { None } - pub fn recover_diff_marker(&mut self) { - if let Err(err) = self.err_diff_marker() { + pub fn recover_vcs_conflict_marker(&mut self) { + if let Err(err) = self.err_vcs_conflict_marker() { err.emit(); FatalError.raise(); } } - pub fn err_diff_marker(&mut self) -> PResult<'a, ()> { - let Some(start) = self.diff_marker(&TokenKind::BinOp(token::Shl), &TokenKind::Lt) else { + pub fn err_vcs_conflict_marker(&mut self) -> PResult<'a, ()> { + let Some(start) = self.conflict_marker(&TokenKind::BinOp(token::Shl), &TokenKind::Lt) + else { return Ok(()); }; let mut spans = Vec::with_capacity(3); @@ -2990,13 +3001,15 @@ impl<'a> Parser<'a> { if self.token.kind == TokenKind::Eof { break; } - if let Some(span) = self.diff_marker(&TokenKind::OrOr, &TokenKind::BinOp(token::Or)) { + if let Some(span) = self.conflict_marker(&TokenKind::OrOr, &TokenKind::BinOp(token::Or)) + { middlediff3 = Some(span); } - if let Some(span) = self.diff_marker(&TokenKind::EqEq, &TokenKind::Eq) { + if let Some(span) = self.conflict_marker(&TokenKind::EqEq, &TokenKind::Eq) { middle = Some(span); } - if let Some(span) = self.diff_marker(&TokenKind::BinOp(token::Shr), &TokenKind::Gt) { + if let Some(span) = self.conflict_marker(&TokenKind::BinOp(token::Shr), &TokenKind::Gt) + { spans.push(span); end = Some(span); break; diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs index cbc7ce9ef7c..d2d21624150 100644 --- a/compiler/rustc_parse/src/parser/expr.rs +++ b/compiler/rustc_parse/src/parser/expr.rs @@ -3734,7 +3734,7 @@ impl<'a> Parser<'a> { /// Parses `ident (COLON expr)?`. fn parse_expr_field(&mut self) -> PResult<'a, ExprField> { let attrs = self.parse_outer_attributes()?; - self.recover_diff_marker(); + self.recover_vcs_conflict_marker(); self.collect_tokens_trailing_token(attrs, ForceCollect::No, |this, attrs| { let lo = this.token.span; diff --git a/compiler/rustc_parse/src/parser/item.rs b/compiler/rustc_parse/src/parser/item.rs index 2a82a95dd07..05b0e0fe52d 100644 --- a/compiler/rustc_parse/src/parser/item.rs +++ b/compiler/rustc_parse/src/parser/item.rs @@ -49,6 +49,7 @@ impl<'a> Parser<'a> { } /// Parses the contents of a module (inner attributes followed by module items). + /// We exit once we hit `term` pub fn parse_mod( &mut self, term: &TokenKind, @@ -101,9 +102,9 @@ impl<'a> Parser<'a> { fn_parse_mode: FnParseMode, force_collect: ForceCollect, ) -> PResult<'a, Option<Item>> { - self.recover_diff_marker(); + self.recover_vcs_conflict_marker(); let attrs = self.parse_outer_attributes()?; - self.recover_diff_marker(); + self.recover_vcs_conflict_marker(); self.parse_item_common(attrs, true, false, fn_parse_mode, force_collect) } @@ -723,7 +724,7 @@ impl<'a> Parser<'a> { if self.recover_doc_comment_before_brace() { continue; } - self.recover_diff_marker(); + self.recover_vcs_conflict_marker(); match parse_item(self) { Ok(None) => { let mut is_unnecessary_semicolon = !items.is_empty() @@ -1070,7 +1071,7 @@ impl<'a> Parser<'a> { /// ``` fn parse_use_tree_list(&mut self) -> PResult<'a, ThinVec<(UseTree, ast::NodeId)>> { self.parse_delim_comma_seq(Delimiter::Brace, |p| { - p.recover_diff_marker(); + p.recover_vcs_conflict_marker(); Ok((p.parse_use_tree()?, DUMMY_NODE_ID)) }) .map(|(r, _)| r) @@ -1497,9 +1498,9 @@ impl<'a> Parser<'a> { } fn parse_enum_variant(&mut self, span: Span) -> PResult<'a, Option<Variant>> { - self.recover_diff_marker(); + self.recover_vcs_conflict_marker(); let variant_attrs = self.parse_outer_attributes()?; - self.recover_diff_marker(); + self.recover_vcs_conflict_marker(); let help = "enum variants can be `Variant`, `Variant = <integer>`, \ `Variant(Type, ..., TypeN)` or `Variant { fields: Types }`"; self.collect_tokens_trailing_token( @@ -1688,6 +1689,10 @@ impl<'a> Parser<'a> { Ok((class_name, ItemKind::Union(vdata, generics))) } + /// This function parses the fields of record structs: + /// + /// - `struct S { ... }` + /// - `enum E { Variant { ... } }` pub(crate) fn parse_record_struct_body( &mut self, adt_ty: &str, @@ -1714,19 +1719,10 @@ impl<'a> Parser<'a> { self.eat(&token::CloseDelim(Delimiter::Brace)); } else { let token_str = super::token_descr(&self.token); - let msg = format!( - "expected {}`{{` after struct name, found {}", - if parsed_where { "" } else { "`where`, or " }, - token_str - ); + let where_str = if parsed_where { "" } else { "`where`, or " }; + let msg = format!("expected {where_str}`{{` after struct name, found {token_str}"); let mut err = self.dcx().struct_span_err(self.token.span, msg); - err.span_label( - self.token.span, - format!( - "expected {}`{{` after struct name", - if parsed_where { "" } else { "`where`, or " } - ), - ); + err.span_label(self.token.span, format!("expected {where_str}`{{` after struct name",)); return Err(err); } @@ -1740,7 +1736,7 @@ impl<'a> Parser<'a> { let attrs = p.parse_outer_attributes()?; p.collect_tokens_trailing_token(attrs, ForceCollect::No, |p, attrs| { let mut snapshot = None; - if p.is_diff_marker(&TokenKind::BinOp(token::Shl), &TokenKind::Lt) { + if p.is_vcs_conflict_marker(&TokenKind::BinOp(token::Shl), &TokenKind::Lt) { // Account for `<<<<<<<` diff markers. We can't proactively error here because // that can be a valid type start, so we snapshot and reparse only we've // encountered another parse error. @@ -1751,7 +1747,7 @@ impl<'a> Parser<'a> { Ok(vis) => vis, Err(err) => { if let Some(ref mut snapshot) = snapshot { - snapshot.recover_diff_marker(); + snapshot.recover_vcs_conflict_marker(); } return Err(err); } @@ -1760,7 +1756,7 @@ impl<'a> Parser<'a> { Ok(ty) => ty, Err(err) => { if let Some(ref mut snapshot) = snapshot { - snapshot.recover_diff_marker(); + snapshot.recover_vcs_conflict_marker(); } return Err(err); } @@ -1785,9 +1781,9 @@ impl<'a> Parser<'a> { /// Parses an element of a struct declaration. fn parse_field_def(&mut self, adt_ty: &str) -> PResult<'a, FieldDef> { - self.recover_diff_marker(); + self.recover_vcs_conflict_marker(); let attrs = self.parse_outer_attributes()?; - self.recover_diff_marker(); + self.recover_vcs_conflict_marker(); self.collect_tokens_trailing_token(attrs, ForceCollect::No, |this, attrs| { let lo = this.token.span; let vis = this.parse_visibility(FollowedByType::No)?; @@ -2647,7 +2643,7 @@ impl<'a> Parser<'a> { } let (mut params, _) = self.parse_paren_comma_seq(|p| { - p.recover_diff_marker(); + p.recover_vcs_conflict_marker(); let snapshot = p.create_snapshot_for_diagnostic(); let param = p.parse_param_general(req_name, first_param).or_else(|e| { let guar = e.emit(); diff --git a/compiler/rustc_parse/src/parser/stmt.rs b/compiler/rustc_parse/src/parser/stmt.rs index d70afebf1b2..7424fbea9b0 100644 --- a/compiler/rustc_parse/src/parser/stmt.rs +++ b/compiler/rustc_parse/src/parser/stmt.rs @@ -567,7 +567,7 @@ impl<'a> Parser<'a> { if self.token == token::Eof { break; } - if self.is_diff_marker(&TokenKind::BinOp(token::Shl), &TokenKind::Lt) { + if self.is_vcs_conflict_marker(&TokenKind::BinOp(token::Shl), &TokenKind::Lt) { // Account for `<<<<<<<` diff markers. We can't proactively error here because // that can be a valid path start, so we snapshot and reparse only we've // encountered another parse error. @@ -576,7 +576,7 @@ impl<'a> Parser<'a> { let stmt = match self.parse_full_stmt(recover) { Err(mut err) if recover.yes() => { if let Some(ref mut snapshot) = snapshot { - snapshot.recover_diff_marker(); + snapshot.recover_vcs_conflict_marker(); } if self.token == token::Colon { // if a previous and next token of the current one is |