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use crate::{
feature::{FeatureProvider, FeatureRequest},
protocol::{LocationLink, RangeExt, TextDocumentPositionParams},
syntax::{latex, SyntaxNode},
workspace::{Document, DocumentContent},
};
use async_trait::async_trait;
#[derive(Debug, PartialEq, Eq, Clone)]
pub struct LatexCitationDefinitionProvider;
#[async_trait]
impl FeatureProvider for LatexCitationDefinitionProvider {
type Params = TextDocumentPositionParams;
type Output = Vec<LocationLink>;
async fn execute<'a>(&'a self, req: &'a FeatureRequest<Self::Params>) -> Self::Output {
let mut links = Vec::new();
if let Some(reference) = Self::find_reference(req) {
for doc in req.related() {
Self::find_definitions(&doc, &reference, &mut links);
}
}
links
}
}
impl LatexCitationDefinitionProvider {
fn find_reference(req: &FeatureRequest<TextDocumentPositionParams>) -> Option<&latex::Token> {
req.current().content.as_latex().and_then(|table| {
table
.citations
.iter()
.flat_map(|citation| citation.keys(&table))
.find(|key| key.range().contains(req.params.position))
})
}
fn find_definitions(doc: &Document, reference: &latex::Token, links: &mut Vec<LocationLink>) {
if let DocumentContent::Bibtex(tree) = &doc.content {
for entry in tree
.children(tree.root)
.filter_map(|node| tree.as_entry(node))
{
if let Some(key) = &entry.key {
if key.text() == reference.text() {
links.push(LocationLink {
origin_selection_range: Some(reference.range()),
target_uri: doc.uri.clone().into(),
target_range: entry.range(),
target_selection_range: key.range(),
});
}
}
}
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{feature::FeatureTester, protocol::Range};
use indoc::indoc;
#[tokio::test]
async fn empty_latex_document() {
let actual_links = FeatureTester::new()
.file("main.tex", "")
.main("main.tex")
.position(0, 0)
.test_position(LatexCitationDefinitionProvider)
.await;
assert!(actual_links.is_empty());
}
#[tokio::test]
async fn empty_bibtex_document() {
let actual_links = FeatureTester::new()
.file("main.bib", "")
.main("main.bib")
.position(0, 0)
.test_position(LatexCitationDefinitionProvider)
.await;
assert!(actual_links.is_empty());
}
#[tokio::test]
async fn has_definition() {
let actual_links = FeatureTester::new()
.file(
"foo.tex",
indoc!(
r#"
\addbibresource{baz.bib}
\cite{foo}
"#
),
)
.file("bar.bib", r#"@article{foo, bar = {baz}}"#)
.file("baz.bib", r#"@article{foo, bar = {baz}}"#)
.main("foo.tex")
.position(1, 6)
.test_position(LatexCitationDefinitionProvider)
.await;
let exepcted_links = vec![LocationLink {
origin_selection_range: Some(Range::new_simple(1, 6, 1, 9)),
target_uri: FeatureTester::uri("baz.bib").into(),
target_range: Range::new_simple(0, 0, 0, 26),
target_selection_range: Range::new_simple(0, 9, 0, 12),
}];
assert_eq!(actual_links, exepcted_links);
}
}
|