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use cancellation::CancellationToken;
use lsp_types::{Hover, HoverContents, HoverParams};
use crate::{features::cursor::CursorContext, render_label, LineIndexExt};
pub fn find_label_hover(
context: &CursorContext<HoverParams>,
_token: &CancellationToken,
) -> Option<Hover> {
let main_document = context.request.main_document();
let (name_text, name_range) = context
.find_label_name_word()
.or_else(|| context.find_label_name_command())?;
let label = render_label(&context.request.subset, name_text, None)?;
Some(Hover {
range: Some(main_document.line_index.line_col_lsp_range(name_range)),
contents: HoverContents::Markup(label.documentation()),
})
}
#[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_label_hover(&context, CancellationToken::none());
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_label_hover(&context, CancellationToken::none());
assert_eq!(actual_hover, None);
}
#[test]
fn test_section() {
let request = FeatureTester::builder()
.files(vec![("main.tex", r#"\section{Foo}\label{sec:foo}"#)])
.main("main.tex")
.line(0)
.character(23)
.build()
.hover();
let context = CursorContext::new(request);
let actual_hover = find_label_hover(&context, CancellationToken::none()).unwrap();
assert_eq!(actual_hover.range.unwrap(), Range::new_simple(0, 20, 0, 27));
}
}
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