bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Rip it out

Browse source 
My type ascription
Oh rip it out
Ah
If you think we live too much then
You can sacrifice diagnostics
Don't mix your garbage
Into my syntax
So many weird hacks keep diagnostics alive
Yet I don't even step outside
So many bad diagnostics keep tyasc alive
Yet tyasc doesn't even bother to survive!
This commit is contained in:
Nilstrieb 2022-11-16 21:46:06 +01:00 • committed by yukang
parent 2034b6d23c
commit c63b6a437e
97 changed files with 951 additions and 954 deletions
Download patch file Download diff file Expand all files Collapse all files

23
compiler/rustc_parse/src/parser/mod.rs
View file

@ -148,9 +148,6 @@ pub struct Parser<'a> {
max_angle_bracket_count: u32,
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)`).
pub last_type_ascription: Option<(Span, bool /* likely path typo */)>,
/// If present, this `Parser` is not parsing Rust code but rather a macro call.
subparser_name: Option<&'static str>,
capture_state: CaptureState,
@ -165,7 +162,7 @@ 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<'_>, 288);
rustc_data_structures::static_assert_size!(Parser<'_>, 320);
/// Stores span information about a closure.
#[derive(Clone)]
@ -470,7 +467,6 @@ impl<'a> Parser<'a> {
unmatched_angle_bracket_count: 0,
max_angle_bracket_count: 0,
last_unexpected_token_span: None,
last_type_ascription: None,
subparser_name,
capture_state: CaptureState {
capturing: Capturing::No,
@ -832,10 +828,11 @@ impl<'a> Parser<'a> {
}
fn expect_any_with_type(&mut self, kets: &[&TokenKind], expect: TokenExpectType) -> bool {
kets.iter().any(|k| match expect {
let res = kets.iter().any(|k| match expect {
TokenExpectType::Expect => self.check(k),
TokenExpectType::NoExpect => self.token == **k,
})
});
res
}
fn parse_seq_to_before_tokens<T>(
@ -941,10 +938,14 @@ impl<'a> Parser<'a> {
// propagate the help message from sub error 'e' to main error 'expect_err;
expect_err.children.push(xx.clone());
}
expect_err.emit();
e.cancel();
break;
if self.token == token::Colon {
// we will try to recover in `maybe_recover_struct_lit_bad_delims`
return Err(expect_err);
} else {
expect_err.emit();
break;
}
}
}
}
@ -959,7 +960,6 @@ impl<'a> Parser<'a> {
let t = f(self)?;
v.push(t);
}
Ok((v, trailing, recovered))
}
@ -1045,6 +1045,7 @@ impl<'a> Parser<'a> {
f: impl FnMut(&mut Parser<'a>) -> PResult<'a, T>,
) -> PResult<'a, (ThinVec<T>, bool /* trailing */)> {
let (val, trailing, recovered) = self.parse_seq_to_before_end(ket, sep, f)?;
if !recovered {
self.eat(ket);
}