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use lsp_types::{Hover, HoverContents, HoverParams};
use crate::{
component_db::COMPONENT_DATABASE, features::cursor::CursorContext, syntax::latex, LineIndexExt,
};
pub fn find_component_hover(context: &CursorContext<HoverParams>) -> Option<Hover> {
let main_document = context.request.main_document();
let data = main_document.data.as_latex()?;
for link in &data.extras.explicit_links {
if matches!(
link.kind,
latex::ExplicitLinkKind::Package | latex::ExplicitLinkKind::Class
) && link.stem_range.contains_inclusive(context.offset)
{
let docs = COMPONENT_DATABASE.documentation(&link.stem)?;
return Some(Hover {
contents: HoverContents::Markup(docs),
range: Some(main_document.line_index.line_col_lsp_range(link.stem_range)),
});
}
}
None
}
#[cfg(test)]
mod tests {
use lsp_types::Range;
use crate::{features::testing::FeatureTester, RangeExt};
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_component_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_component_hover(&context);
assert_eq!(actual_hover, None);
}
#[test]
fn test_known_package() {
let request = FeatureTester::builder()
.files(vec![("main.tex", r#"\usepackage{amsmath}"#)])
.main("main.tex")
.line(0)
.character(15)
.build()
.hover();
let context = CursorContext::new(request);
let actual_hover = find_component_hover(&context).unwrap();
assert_eq!(actual_hover.range.unwrap(), Range::new_simple(0, 12, 0, 19));
}
#[test]
fn test_unknown_class() {
let request = FeatureTester::builder()
.files(vec![("main.tex", r#"\documentclass{abcdefghijklmnop}"#)])
.main("main.tex")
.line(0)
.character(20)
.build()
.hover();
let context = CursorContext::new(request);
let actual_hover = find_component_hover(&context);
assert_eq!(actual_hover, None);
}
}
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