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use base_db::{util::queries, DocumentData};
use rowan::ast::AstNode;
use syntax::bibtex;
use crate::{Hover, HoverData, HoverParams};
pub(super) fn find_hover<'db>(params: &HoverParams<'db>) -> Option<Hover<'db>> {
let offset = params.offset;
let (name, range) = match ¶ms.document.data {
DocumentData::Tex(data) => {
let result = queries::object_at_cursor(
&data.semantics.citations,
offset,
queries::SearchMode::Full,
)?;
(&result.object.name.text, result.range)
}
DocumentData::Bib(data) => {
let result = queries::object_at_cursor(
&data.semantics.entries,
offset,
queries::SearchMode::Name,
)?;
(&result.object.name.text, result.range)
}
_ => return None,
};
let text = params.project.documents.iter().find_map(|document| {
let data = document.data.as_bib()?;
let root = bibtex::Root::cast(data.root_node())?;
let entry = root.find_entry(name)?;
citeproc::render(&entry)
})?;
let data = HoverData::Citation(text);
Some(Hover { range, data })
}
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