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use crate::range::RangeExt;
use crate::syntax::*;
use crate::workspace::*;
use futures_boxed::boxed;
use lsp_types::*;
#[derive(Debug, PartialEq, Eq, Clone)]
pub struct BibtexFieldHoverProvider;
impl FeatureProvider for BibtexFieldHoverProvider {
type Params = TextDocumentPositionParams;
type Output = Option<Hover>;
#[boxed]
async fn execute<'a>(
&'a self,
request: &'a FeatureRequest<TextDocumentPositionParams>,
) -> Option<Hover> {
if let SyntaxTree::Bibtex(tree) = &request.document().tree {
for node in tree.find(request.params.position) {
if let BibtexNode::Field(field) = node {
if field.name.range().contains(request.params.position) {
let documentation = LANGUAGE_DATA.field_documentation(field.name.text())?;
return Some(Hover {
contents: HoverContents::Markup(MarkupContent {
kind: MarkupKind::Markdown,
value: documentation.into(),
}),
range: Some(field.name.range()),
});
}
}
}
}
None
}
}
#[cfg(test)]
mod tests {
use super::*;
use lsp_types::Position;
#[test]
fn test_known_field() {
let hover = test_feature(
BibtexFieldHoverProvider,
FeatureSpec {
files: vec![FeatureSpec::file("foo.bib", "@article{foo, author = bar}")],
main_file: "foo.bib",
position: Position::new(0, 15),
..FeatureSpec::default()
},
);
assert_eq!(
hover,
Some(Hover {
contents: HoverContents::Markup(MarkupContent {
kind: MarkupKind::Markdown,
value: LANGUAGE_DATA.field_documentation("author").unwrap().into(),
}),
range: Some(Range::new_simple(0, 14, 0, 20)),
})
);
}
#[test]
fn test_unknown_field() {
let hover = test_feature(
BibtexFieldHoverProvider,
FeatureSpec {
files: vec![FeatureSpec::file("foo.bib", "@article{foo, bar = baz}")],
main_file: "foo.bib",
position: Position::new(0, 15),
..FeatureSpec::default()
},
);
assert_eq!(hover, None);
}
#[test]
fn test_entry_key() {
let hover = test_feature(
BibtexFieldHoverProvider,
FeatureSpec {
files: vec![FeatureSpec::file("foo.bib", "@article{foo, bar = baz}")],
main_file: "foo.bib",
position: Position::new(0, 11),
..FeatureSpec::default()
},
);
assert_eq!(hover, None);
}
#[test]
fn test_latex() {
let hover = test_feature(
BibtexFieldHoverProvider,
FeatureSpec {
files: vec![FeatureSpec::file("foo.tex", "")],
main_file: "foo.tex",
position: Position::new(0, 0),
..FeatureSpec::default()
},
);
assert_eq!(hover, None);
}
}
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