bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Remove unclosed_delims from parser

Browse source
This commit is contained in:
yukang 2023-03-03 22:48:21 +00:00
parent 13471d3b20
commit d1073fab35
4 changed files with 12 additions and 158 deletions
Download patch file Download diff file Expand all files Collapse all files

17
compiler/rustc_parse/src/parser/mod.rs
View file

@ -146,10 +146,7 @@ pub struct Parser<'a> {
/// See the comments in the `parse_path_segment` function for more details.
unmatched_angle_bracket_count: u32,
max_angle_bracket_count: u32,
/// A list of all unclosed delimiters found by the lexer. If an entry is used for error recovery
/// it gets removed from here. Every entry left at the end gets emitted as an independent
/// error.
pub(super) unclosed_delims: Vec<UnmatchedDelim>,
last_unexpected_token_span: Option<Span>,
/// Span pointing at the `:` for the last type ascription the parser has seen, and whether it
/// looked like it could have been a mistyped path or literal `Option:Some(42)`).
@ -168,7 +165,7 @@ pub struct Parser<'a> {
// This type is used a lot, e.g. it's cloned when matching many declarative macro rules with nonterminals. Make sure
// it doesn't unintentionally get bigger.
#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
rustc_data_structures::static_assert_size!(Parser<'_>, 312);
rustc_data_structures::static_assert_size!(Parser<'_>, 288);
/// Stores span information about a closure.
#[derive(Clone)]
@ -215,12 +212,6 @@ struct CaptureState {
inner_attr_ranges: FxHashMap<AttrId, ReplaceRange>,
}
impl<'a> Drop for Parser<'a> {
fn drop(&mut self) {
emit_unclosed_delims(&mut self.unclosed_delims, &self.sess);
}
}
/// Iterator over a `TokenStream` that produces `Token`s. It's a bit odd that
/// we (a) lex tokens into a nice tree structure (`TokenStream`), and then (b)
/// use this type to emit them as a linear sequence. But a linear sequence is
@ -478,7 +469,6 @@ impl<'a> Parser<'a> {
desugar_doc_comments,
unmatched_angle_bracket_count: 0,
max_angle_bracket_count: 0,
unclosed_delims: Vec::new(),
last_unexpected_token_span: None,
last_type_ascription: None,
subparser_name,
@ -859,7 +849,6 @@ impl<'a> Parser<'a> {
let mut recovered = false;
let mut trailing = false;
let mut v = ThinVec::new();
let unclosed_delims = !self.unclosed_delims.is_empty();
while !self.expect_any_with_type(kets, expect) {
if let token::CloseDelim(..) | token::Eof = self.token.kind {
@ -901,7 +890,7 @@ impl<'a> Parser<'a> {
_ => {
// Attempt to keep parsing if it was a similar separator.
if let Some(tokens) = t.similar_tokens() {
if tokens.contains(&self.token.kind) && !unclosed_delims {
if tokens.contains(&self.token.kind) {
self.bump();
}
}