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parse use statements #1

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Lokathor opened this issue Aug 13, 2022 · 0 comments
Open

parse use statements #1

Lokathor opened this issue Aug 13, 2022 · 0 comments

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@Lokathor
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Zesterer said that this should work:

enum Head {
    Single(Ident),
    Many(Vec<Import>),
}

struct Import {
    path: Vec<Ident>,
    head: Box<Head>,
}

let import = recursive(|import| {
    let head = ident.map(Head::Single)
        .or(import
            .separated_by(comma)
            .delimited_by(lbrace, rbrace)
            .map(Head::Many));
    let path = ident.then_ignore(separator).repeated();

    path.then(head).map(|(path, head)| Import { path, head })
});

let import_statement = just(use)
    .ignore_then(import)
    .then_ignore(semicolon);
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@Lokathor