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libsyntax: De-@mut Parser::open_braces

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This commit is contained in:
Patrick Walton 2013-12-30 15:41:11 -08:00
parent a2f4877862
commit f4118d5a4c
1 changed files with 9 additions and 5 deletions
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14
src/libsyntax/parse/parser.rs
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@ -318,7 +318,7 @@ pub fn Parser(sess: @mut ParseSess, cfg: ast::CrateConfig, rdr: @mut reader)
quote_depth: 0,
obsolete_set: HashSet::new(),
mod_path_stack: ~[],
open_braces: @mut ~[],
open_braces: ~[],
non_copyable: util::NonCopyable
}
}
@ -349,7 +349,7 @@ pub struct Parser {
/// Used to determine the path to externally loaded source files
mod_path_stack: ~[@str],
/// Stack of spans of open delimiters. Used for error message.
open_braces: @mut ~[Span],
open_braces: ~[Span],
/* do not copy the parser; its state is tied to outside state */
priv non_copyable: util::NonCopyable
}
@ -2093,7 +2093,10 @@ impl Parser {
// This is a conservative error: only report the last unclosed delimiter. The
// previous unclosed delimiters could actually be closed! The parser just hasn't
// gotten to them yet.
p.open_braces.last_opt().map(|sp| p.span_note(*sp, "unclosed delimiter"));
match p.open_braces.last_opt() {
None => {}
Some(&sp) => p.span_note(sp, "unclosed delimiter"),
};
let token_str = p.this_token_to_str();
p.fatal(format!("incorrect close delimiter: `{}`",
token_str))
@ -2137,7 +2140,8 @@ impl Parser {
match self.token {
token::EOF => {
for sp in self.open_braces.iter() {
let open_braces = self.open_braces.clone();
for sp in open_braces.iter() {
self.span_note(*sp, "Did you mean to close this delimiter?");
}
// There shouldn't really be a span, but it's easier for the test runner
@ -2148,7 +2152,7 @@ impl Parser {
let close_delim = token::flip_delimiter(&self.token);
// Parse the open delimiter.
(*self.open_braces).push(self.span);
self.open_braces.push(self.span);
let mut result = ~[parse_any_tt_tok(self)];
let trees =