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-rw-r--r--support/texlab/src/hover/latex_component.rs39
1 files changed, 39 insertions, 0 deletions
diff --git a/support/texlab/src/hover/latex_component.rs b/support/texlab/src/hover/latex_component.rs
new file mode 100644
index 0000000000..4d262a6891
--- /dev/null
+++ b/support/texlab/src/hover/latex_component.rs
@@ -0,0 +1,39 @@
+use crate::completion::DATABASE;
+use crate::range::RangeExt;
+use crate::syntax::*;
+use crate::workspace::*;
+use futures_boxed::boxed;
+use lsp_types::{Hover, HoverContents, TextDocumentPositionParams};
+
+#[derive(Debug, PartialEq, Eq, Clone)]
+pub struct LatexComponentHoverProvider;
+
+impl FeatureProvider for LatexComponentHoverProvider {
+ type Params = TextDocumentPositionParams;
+ type Output = Option<Hover>;
+
+ #[boxed]
+ async fn execute<'a>(
+ &'a self,
+ request: &'a FeatureRequest<TextDocumentPositionParams>,
+ ) -> Option<Hover> {
+ if let SyntaxTree::Latex(tree) = &request.document().tree {
+ for include in &tree.includes {
+ if include.kind == LatexIncludeKind::Package
+ || include.kind == LatexIncludeKind::Class
+ {
+ for path in include.paths() {
+ if path.range().contains(request.params.position) {
+ let documentation = DATABASE.documentation(path.text())?;
+ return Some(Hover {
+ contents: HoverContents::Markup(documentation),
+ range: Some(path.range()),
+ });
+ }
+ }
+ }
+ }
+ }
+ None
+ }
+}