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-rw-r--r--support/texlab/crates/inlay-hints/src/label.rs59
1 files changed, 59 insertions, 0 deletions
diff --git a/support/texlab/crates/inlay-hints/src/label.rs b/support/texlab/crates/inlay-hints/src/label.rs
new file mode 100644
index 0000000000..8db852752e
--- /dev/null
+++ b/support/texlab/crates/inlay-hints/src/label.rs
@@ -0,0 +1,59 @@
+use base_db::{
+ semantics::tex::{Label, LabelKind},
+ util::{queries::Object, render_label},
+ FeatureParams,
+};
+use rustc_hash::FxHashMap;
+
+use crate::{InlayHint, InlayHintBuilder, InlayHintData};
+
+pub(super) fn find_hints(builder: &mut InlayHintBuilder) -> Option<()> {
+ let definitions = base_db::semantics::tex::Label::find_all(&builder.params.feature.project)
+ .into_iter()
+ .filter(|(_, label)| label.kind == LabelKind::Definition)
+ .map(|(_, label)| (label.name_text(), label))
+ .collect::<FxHashMap<_, _>>();
+
+ let params = &builder.params.feature;
+ let data = params.document.data.as_tex()?;
+ let range = builder.params.range;
+ for label in data
+ .semantics
+ .labels
+ .iter()
+ .filter(|label| label.name.range.intersect(range).is_some())
+ {
+ if let Some(hint) = process_label(params, &definitions, label) {
+ builder.hints.push(hint);
+ }
+ }
+
+ Some(())
+}
+
+fn process_label<'a>(
+ params: &FeatureParams<'a>,
+ definitions: &FxHashMap<&str, &'a Label>,
+ label: &'a Label,
+) -> Option<InlayHint<'a>> {
+ let config = &params.workspace.config().inlay_hints;
+ let offset = label.full_range.end();
+ let data = if label.kind == LabelKind::Definition {
+ if !config.label_definitions {
+ return None;
+ }
+
+ let label = render_label(params.workspace, &params.project, label)?;
+ InlayHintData::LabelDefinition(label)
+ } else {
+ if !config.label_references {
+ return None;
+ }
+
+ let label = definitions.get(label.name.text.as_str())?;
+ let label = render_label(params.workspace, &params.project, label)?;
+ InlayHintData::LabelReference(label)
+ };
+
+ Some(InlayHint { offset, data })
+}