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-rw-r--r--support/texlab/src/hover/bibtex_field.rs108
1 files changed, 108 insertions, 0 deletions
diff --git a/support/texlab/src/hover/bibtex_field.rs b/support/texlab/src/hover/bibtex_field.rs
new file mode 100644
index 0000000000..cbe03078cf
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+++ b/support/texlab/src/hover/bibtex_field.rs
@@ -0,0 +1,108 @@
+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);
+ }
+}