bjoernager/rust
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remove duplicated diagnostic for unclosed delimiter

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This commit is contained in:
yukang 2023-02-28 07:56:34 +00:00
parent f01d0c02e7
commit 65ad5f8de7
21 changed files with 94 additions and 325 deletions
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17
compiler/rustc_parse/src/lexer/tokentrees.rs
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@ -34,7 +34,7 @@ impl<'a> TokenTreesReader<'a> {
let mut buf = Vec::new();
loop {
match self.token.kind {
token::OpenDelim(delim) => buf.push(self.parse_token_tree_open_delim(delim)),
token::OpenDelim(delim) => buf.push(self.parse_token_tree_open_delim(delim)?),
token::CloseDelim(delim) => {
return if is_delimited {
Ok(TokenStream::new(buf))
@ -43,10 +43,11 @@ impl<'a> TokenTreesReader<'a> {
};
}
token::Eof => {
if is_delimited {
self.eof_err().emit();
}
return Ok(TokenStream::new(buf));
return if is_delimited {
Err(self.eof_err())
} else {
Ok(TokenStream::new(buf))
};
}
_ => {
// Get the next normal token. This might require getting multiple adjacent
@ -98,7 +99,7 @@ impl<'a> TokenTreesReader<'a> {
err
}
fn parse_token_tree_open_delim(&mut self, open_delim: Delimiter) -> TokenTree {
fn parse_token_tree_open_delim(&mut self, open_delim: Delimiter) -> PResult<'a, TokenTree> {
// The span for beginning of the delimited section
let pre_span = self.token.span;
@ -107,7 +108,7 @@ impl<'a> TokenTreesReader<'a> {
// Parse the token trees within the delimiters.
// We stop at any delimiter so we can try to recover if the user
// uses an incorrect delimiter.
let tts = self.parse_token_trees(/* is_delimited */ true).unwrap();
let tts = self.parse_token_trees(/* is_delimited */ true)?;
// Expand to cover the entire delimited token tree
let delim_span = DelimSpan::from_pair(pre_span, self.token.span);
@ -190,7 +191,7 @@ impl<'a> TokenTreesReader<'a> {
_ => unreachable!(),
}
TokenTree::Delimited(delim_span, open_delim, tts)
Ok(TokenTree::Delimited(delim_span, open_delim, tts))
}
fn close_delim_err(&mut self, delim: Delimiter) -> PErr<'a> {