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use crate::{
components::COMPONENT_DATABASE,
feature::{FeatureProvider, FeatureRequest},
protocol::{Hover, HoverContents, RangeExt, TextDocumentPositionParams},
syntax::{LatexIncludeKind, SyntaxNode},
};
use async_trait::async_trait;
#[derive(Debug, PartialEq, Eq, Clone, Copy, Default)]
pub struct LatexComponentHoverProvider;
#[async_trait]
impl FeatureProvider for LatexComponentHoverProvider {
type Params = TextDocumentPositionParams;
type Output = Option<Hover>;
async fn execute<'a>(&'a self, req: &'a FeatureRequest<Self::Params>) -> Self::Output {
let table = req.current().content.as_latex()?;
for include in &table.includes {
match include.kind {
LatexIncludeKind::Package | LatexIncludeKind::Class => {
for path in include.paths(&table) {
if path.range().contains(req.params.position) {
let docs = COMPONENT_DATABASE.documentation(path.text())?;
return Some(Hover {
contents: HoverContents::Markup(docs),
range: Some(path.range()),
});
}
}
}
_ => {}
}
}
None
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{
feature::FeatureTester,
protocol::{Range, RangeExt},
};
#[tokio::test]
async fn empty_latex_document() {
let actual_hover = FeatureTester::new()
.file("main.tex", "")
.main("main.tex")
.position(0, 0)
.test_position(LatexComponentHoverProvider)
.await;
assert_eq!(actual_hover, None);
}
#[tokio::test]
async fn empty_bibtex_document() {
let actual_hover = FeatureTester::new()
.file("main.bib", "")
.main("main.bib")
.position(0, 0)
.test_position(LatexComponentHoverProvider)
.await;
assert_eq!(actual_hover, None);
}
#[tokio::test]
async fn known_package() {
let actual_hover = FeatureTester::new()
.file("main.tex", r#"\usepackage{amsmath}"#)
.main("main.tex")
.position(0, 15)
.test_position(LatexComponentHoverProvider)
.await
.unwrap();
assert_eq!(actual_hover.range.unwrap(), Range::new_simple(0, 12, 0, 19));
}
#[tokio::test]
async fn unknown_class() {
let actual_hover = FeatureTester::new()
.file("main.tex", r#"\documentclass{abcdefghijklmnop}"#)
.main("main.tex")
.position(0, 20)
.test_position(LatexComponentHoverProvider)
.await;
assert_eq!(actual_hover, None);
}
}
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