10000 syntax: cleanup param, method, and misc parsing by Centril · Pull Request #64910 · rust-lang/rust · GitHub
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syntax: cleanup param, method, and misc parsing #64910

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Merged
merged 21 commits into from
Oct 2, 2019
Merged

syntax: cleanup param, method, and misc parsing #64910

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f290467
syntax: cleanup method parsing.
Centril Sep 29, 2019
378cc98
syntax: `is_named_argument` -> `is_named_param`.
Centril Sep 29, 2019
4fa9c3b
syntax refactor `parse_fn_params`
Centril Sep 29, 2019
40dc9da
syntax refactor `parse_self_param` (1)
Centril Sep 29, 2019
f688f8a
syntax refactor `parse_self_param` (2)
Centril Sep 29, 2019
ac454e9
syntax refactor `parse_self_param` (3)
Centril Sep 30, 2019
4306d00
syntax refactor `parse_self_param` (4)
Centril Sep 30, 2019
0492302
syntax refactor `parse_self_param` (5)
Centril Sep 30, 2019
347deac
syntax: reorder param parsing to make more sense.
Centril Sep 30, 2019
d9d0e5d
syntax: cleanup `parse_fn_decl`.
Centril Sep 30, 2019
5b80ead
syntax: misc cleanup
Centril Sep 30, 2019
66bf323
syntax: cleanup `parse_visibility`.
Centril Sep 30, 2019
573a8d8
syntax: extract `error_on_invalid_abi`.
Centril Sep 30, 2019
258e86a
syntax: fuse more code paths together.
Centril Sep 30, 2019
bea404f
syntax: stylistic cleanup in item parsing.
Centril Sep 30, 2019
151ce96
syntax: reduce repetition in fn parsing.
Centril Sep 30, 2019
df298b4
syntax: document some methods.
Centril Oct 1, 2019
30647d1
syntax: put helpers of `parse_self_param` in the method.
Centril Oct 1, 2019
49780d2
syntax: merge things back into `parse_visibility`.
Centril Oct 1, 2019
e046904
syntax: de-closure-ify `check_or_expected`.
Centril Oct 1, 2019
5c5dd80
syntax: reformat passing of `FnHeader` to `parse_item_fn`.
Centril Oct 1, 2019
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syntax refactor parse_self_param (2)
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@Centril
Centril committed Sep 30, 2019
commit f688f8aedffcd802012b355c182dafbdf5e819f5
27 changes: 16 additions & 11 deletions src/libsyntax/parse/parser.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1264,17 +1264,22 @@ impl<'a> Parser<'a> {
&& self.look_ahead(n + 1, |t| t != &token::ModSep)
}

fn expect_self_ident(&mut self) -> Ident {
match self.token.kind {
// Preserve hygienic context.
token::Ident(name, _) => {
let span = self.token.span;
self.bump();
Ident::new(name, span)
}
_ => unreachable!(),
}
}

/// Returns the parsed optional self parameter and whether a self shortcut was used.
///
/// See `parse_self_param_with_attrs` to collect attributes.
fn parse_self_param(&mut self) -> PResult<'a, Option<Param>> {
let expect_ident = |this: &mut Self| match this.token.kind {
// Preserve hygienic context.
token::Ident(name, _) =>
{ let span = this.token.span; this.bump(); Ident::new(name, span) }
_ => unreachable!()
};

// Parse optional `self` parameter of a method.
// Only a limited set of initial token sequences is considered `self` parameters; anything
// else is parsed as a normal function parameter list, so some lookahead is required.
Expand Down Expand Up @@ -1308,7 +1313,7 @@ impl<'a> Parser<'a> {
SelfKind::Region(Some(lt), Mutability::Mutable)
} else {
return Ok(None);
}, expect_ident(self), self.prev_span)
}, self.expect_self_ident(), self.prev_span)
}
token::BinOp(token::Star) => {
// `*self`
Expand All @@ -1333,13 +1338,13 @@ impl<'a> Parser<'a> {
SelfKind::Value(Mutability::Immutable)
} else {
return Ok(None);
}, expect_ident(self), self.prev_span)
}, self.expect_self_ident(), self.prev_span)
}
token::Ident(..) => {
if self.is_isolated_self(0) {
// `self`
// `self: TYPE`
let eself_ident = expect_ident(self);
let eself_ident = self.expect_self_ident();
let eself_hi = self.prev_span;
(if self.eat(&token::Colon) {
let ty = self.parse_ty()?;
Expand All @@ -1352,7 +1357,7 @@ impl<'a> Parser<'a> {
// `mut self`
// `mut self: TYPE`
self.bump();
let eself_ident = expect_ident(self);
let eself_ident = self.expect_self_ident();
let eself_hi = self.prev_span;
(if self.eat(&token::Colon) {
let ty = self.parse_ty()?;
Expand Down
0