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use lsp_types::{Hover, HoverContents, HoverParams, MarkupContent, MarkupKind};
use rowan::ast::AstNode;
use crate::{citation, features::cursor::CursorContext, syntax::bibtex, LineIndexExt};
pub fn find_citation_hover(context: &CursorContext<HoverParams>) -> Option<Hover> {
let main_document = context.request.main_document();
let (key_text, key_range) = context
.find_citation_key_word()
.or_else(|| context.find_citation_key_command())
.or_else(|| context.find_entry_key())?;
let contents = context
.request
.workspace
.documents_by_uri
.values()
.find_map(|document| {
document.data.as_bibtex().and_then(|data| {
let root = bibtex::SyntaxNode::new_root(data.green.clone());
let root = bibtex::Root::cast(root)?;
let entry = root.find_entry(&key_text)?;
citation::render(&entry).map(|value| MarkupContent {
kind: MarkupKind::Markdown,
value,
})
})
})?;
Some(Hover {
range: Some(main_document.line_index.line_col_lsp_range(key_range)),
contents: HoverContents::Markup(contents),
})
}
#[cfg(test)]
mod tests {
use insta::assert_debug_snapshot;
use crate::features::testing::FeatureTester;
use super::*;
#[test]
fn test_empty_latex_document() {
let request = FeatureTester::builder()
.files(vec![("main.tex", "")])
.main("main.tex")
.line(0)
.character(0)
.build()
.hover();
let context = CursorContext::new(request);
let actual_hover = find_citation_hover(&context);
assert_eq!(actual_hover, None);
}
#[test]
fn test_empty_bibtex_document() {
let request = FeatureTester::builder()
.files(vec![("main.bib", "")])
.main("main.bib")
.line(0)
.character(0)
.build()
.hover();
let context = CursorContext::new(request);
let actual_hover = find_citation_hover(&context);
assert_eq!(actual_hover, None);
}
#[test]
fn test_inside_cite() {
let request = FeatureTester::builder()
.files(vec![
(
"main.bib",
"@article{foo, author = {Foo Bar}, title = {Baz Qux}, year = 1337}",
),
("main.tex", "\\addbibresource{main.bib}\n\\cite{foo}"),
])
.main("main.tex")
.line(1)
.character(7)
.build()
.hover();
let context = CursorContext::new(request);
let actual_hover = find_citation_hover(&context).unwrap();
assert_debug_snapshot!(actual_hover);
}
#[test]
fn test_inside_entry() {
let request = FeatureTester::builder()
.files(vec![
(
"main.bib",
"@article{foo, author = {Foo Bar}, title = {Baz Qux}, year = 1337}",
),
("main.tex", "\\addbibresource{main.bib}\n\\cite{foo}"),
])
.main("main.bib")
.line(0)
.character(11)
.build()
.hover();
let context = CursorContext::new(request);
let actual_hover = find_citation_hover(&context).unwrap();
assert_debug_snapshot!(actual_hover);
}
}
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