bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

stabilize top level or-pats in if/while let.

Browse source
This commit is contained in:
Mazdak Farrokhzad 2019-01-11 23:57:04 +01:00
parent b43986184b
commit 561483e4e8
6 changed files with 18 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

5
src/libsyntax/parse/parser.rs
View file

@ -3660,8 +3660,6 @@ impl<'a> Parser<'a> {
maybe_whole!(self, NtArm, |x| x);
let attrs = self.parse_outer_attributes()?;
// Allow a '|' before the pats (RFC 1925)
self.eat(&token::BinOp(token::Or));
let pats = self.parse_pats()?;
let guard = if self.eat_keyword(keywords::If) {
Some(Guard::If(self.parse_expr()?))
@ -3768,6 +3766,9 @@ impl<'a> Parser<'a> {
/// Parse patterns, separated by '|' s
fn parse_pats(&mut self) -> PResult<'a, Vec<P<Pat>>> {
// Allow a '|' before the pats (RFC 1925 + RFC 2530)
self.eat(&token::BinOp(token::Or));
let mut pats = Vec::new();
loop {
pats.push(self.parse_top_level_pat()?);