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mbe: split Op::Leaf and handle multi-character puncts

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Ryo Yoshida 2022-12-27 18:18:18 +09:00
parent 47c6c8e2f3
commit ec7148b091
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GPG key ID: E25698A930586171
6 changed files with 183 additions and 56 deletions
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8
crates/mbe/src/expander/transcriber.rs
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@ -134,7 +134,13 @@ fn expand_subtree(
let mut err = None;
for op in template.iter() {
match op {
Op::Leaf(tt) => arena.push(tt.clone().into()),
Op::Literal(it) => arena.push(tt::Leaf::from(it.clone()).into()),
Op::Ident(it) => arena.push(tt::Leaf::from(it.clone()).into()),
Op::Punct(puncts) => {
for punct in puncts {
arena.push(tt::Leaf::from(punct.clone()).into());
}
}
Op::Subtree { tokens, delimiter } => {
let ExpandResult { value: tt, err: e } =
expand_subtree(ctx, tokens, *delimiter, arena);