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use crate::{
feature::{FeatureProvider, FeatureRequest},
protocol::{DocumentLink, DocumentLinkParams},
syntax::{latex, SyntaxNode},
workspace::DocumentContent,
};
use async_trait::async_trait;
#[derive(Debug, PartialEq, Eq, Clone, Copy, Default)]
pub struct LatexImportLinkProvider;
#[async_trait]
impl FeatureProvider for LatexImportLinkProvider {
type Params = DocumentLinkParams;
type Output = Vec<DocumentLink>;
async fn execute<'a>(&'a self, req: &'a FeatureRequest<Self::Params>) -> Self::Output {
if let DocumentContent::Latex(table) = &req.current().content {
table
.imports
.iter()
.flat_map(|import| Self::resolve(req, table, import))
.collect()
} else {
Vec::new()
}
}
}
impl LatexImportLinkProvider {
fn resolve(
req: &FeatureRequest<DocumentLinkParams>,
table: &latex::SymbolTable,
import: &latex::Import,
) -> Vec<DocumentLink> {
let mut links = Vec::new();
let file = import.file(&table);
for target in &import.targets {
if let Some(link) = req.snapshot().find(target).map(|doc| DocumentLink {
range: file.range(),
target: doc.uri.clone().into(),
tooltip: None,
}) {
links.push(link);
break;
}
}
links
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{
feature::FeatureTester,
protocol::{Range, RangeExt},
};
#[tokio::test]
async fn empty_latex_document_command() {
let actual_links = FeatureTester::new()
.file("main.tex", "")
.main("main.tex")
.test_link(LatexImportLinkProvider)
.await;
assert!(actual_links.is_empty());
}
#[tokio::test]
async fn empty_bibtex_document_command() {
let actual_links = FeatureTester::new()
.file("main.bib", "")
.main("main.bib")
.test_link(LatexImportLinkProvider)
.await;
assert!(actual_links.is_empty());
}
#[tokio::test]
async fn has_links() {
let actual_links = FeatureTester::new()
.file("foo.tex", r#"\import{bar/}{baz}"#)
.file("bar/baz.tex", r#""#)
.main("foo.tex")
.test_link(LatexImportLinkProvider)
.await;
let expected_links = vec![DocumentLink {
range: Range::new_simple(0, 14, 0, 17),
target: FeatureTester::uri("bar/baz.tex").into(),
tooltip: None,
}];
assert_eq!(actual_links, expected_links);
}
}
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