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Fix and test edge cases of _ as ident

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This commit is contained in:
Kevin Mehall 2021-03-20 17:43:51 -06:00
parent 0a0e22235b
commit 0a7f28620a
3 changed files with 13 additions and 3 deletions
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7
crates/mbe/src/tt_iter.rs
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@ -49,6 +49,13 @@ impl<'a> TtIter<'a> {
}
pub(crate) fn expect_ident(&mut self) -> Result<&'a tt::Ident, ()> {
match self.expect_leaf()? {
tt::Leaf::Ident(it) if it.text != "_" => Ok(it),
_ => Err(()),
}
}
pub(crate) fn expect_ident_or_underscore(&mut self) -> Result<&'a tt::Ident, ()> {
match self.expect_leaf()? {
tt::Leaf::Ident(it) => Ok(it),
_ => Err(()),