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Make sure we match the entire pattern

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This commit is contained in:
Jeff Muizelaar 2019-02-03 10:06:09 -05:00
parent f370393bba
commit dbc3074556
2 changed files with 34 additions and 1 deletions
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3
crates/ra_mbe/src/mbe_expander.rs
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@ -13,6 +13,9 @@ pub(crate) fn exapnd(rules: &crate::MacroRules, input: &tt::Subtree) -> Option<t
fn expand_rule(rule: &crate::Rule, input: &tt::Subtree) -> Option<tt::Subtree> {
let mut input = TtCursor::new(input);
let bindings = match_lhs(&rule.lhs, &mut input)?;
if !input.is_eof() {
return None;
}
expand_subtree(&rule.rhs, &bindings, &mut Vec::new())
}