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-rw-r--r--support/texlab/src/features/definition/entry.rs125
1 files changed, 125 insertions, 0 deletions
diff --git a/support/texlab/src/features/definition/entry.rs b/support/texlab/src/features/definition/entry.rs
new file mode 100644
index 0000000000..7f489ec848
--- /dev/null
+++ b/support/texlab/src/features/definition/entry.rs
@@ -0,0 +1,125 @@
+use cancellation::CancellationToken;
+use lsp_types::{GotoDefinitionParams, LocationLink};
+
+use crate::{
+ features::cursor::CursorContext,
+ syntax::{bibtex, latex, CstNode},
+ LineIndexExt,
+};
+
+pub fn goto_entry_definition(
+ context: &CursorContext<GotoDefinitionParams>,
+ cancellation_token: &CancellationToken,
+) -> Option<Vec<LocationLink>> {
+ let main_document = context.request.main_document();
+
+ let key = context
+ .cursor
+ .as_latex()
+ .filter(|token| token.kind() == latex::WORD)?;
+
+ latex::Citation::cast(key.parent().parent()?)?;
+
+ let origin_selection_range = main_document
+ .line_index
+ .line_col_lsp_range(key.text_range());
+
+ for document in &context.request.subset.documents {
+ if let Some(data) = document.data.as_bibtex() {
+ for entry in data.root.children().filter_map(bibtex::Entry::cast) {
+ cancellation_token.result().ok()?;
+
+ if let Some(key) = entry.key().filter(|k| k.text() == key.text()) {
+ return Some(vec![LocationLink {
+ origin_selection_range: Some(origin_selection_range),
+ target_uri: document.uri.as_ref().clone().into(),
+ target_selection_range: document
+ .line_index
+ .line_col_lsp_range(key.text_range()),
+ target_range: document.line_index.line_col_lsp_range(entry.small_range()),
+ }]);
+ }
+ }
+ }
+ }
+
+ None
+}
+
+#[cfg(test)]
+mod tests {
+ use indoc::indoc;
+ 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()
+ .definition();
+
+ let context = CursorContext::new(request);
+ let actual_links = goto_entry_definition(&context, CancellationToken::none());
+
+ assert!(actual_links.is_none());
+ }
+
+ #[test]
+ fn test_empty_bibtex_document() {
+ let request = FeatureTester::builder()
+ .files(vec![("main.bib", "")])
+ .main("main.bib")
+ .line(0)
+ .character(0)
+ .build()
+ .definition();
+
+ let context = CursorContext::new(request);
+ let actual_links = goto_entry_definition(&context, CancellationToken::none());
+
+ assert!(actual_links.is_none());
+ }
+
+ #[test]
+ fn test_simple() {
+ let tester = FeatureTester::builder()
+ .files(vec![
+ (
+ "foo.tex",
+ indoc!(
+ r#"
+ \addbibresource{baz.bib}
+ \cite{foo}
+ "#
+ ),
+ ),
+ ("bar.bib", r#"@article{foo, bar = {baz}}"#),
+ ("baz.bib", r#"@article{foo, bar = {baz}}"#),
+ ])
+ .main("foo.tex")
+ .line(1)
+ .character(6)
+ .build();
+ let target_uri = tester.uri("baz.bib").as_ref().clone().into();
+
+ let request = tester.definition();
+ let context = CursorContext::new(request);
+ let actual_links = goto_entry_definition(&context, CancellationToken::none()).unwrap();
+
+ let expected_links = vec![LocationLink {
+ origin_selection_range: Some(Range::new_simple(1, 6, 1, 9)),
+ target_uri,
+ target_range: Range::new_simple(0, 0, 0, 26),
+ target_selection_range: Range::new_simple(0, 9, 0, 12),
+ }];
+
+ assert_eq!(actual_links, expected_links);
+ }
+}