Method handle_linked_editing_range

src/linked_editing.rs:46–80

Compute linked editing ranges for the symbol under the cursor. Returns `Some` only when the cursor is on a variable (not a property declaration) that has at least two occurrences in its definition region. A single occurrence offers nothing to link.

(
        &self,
        uri: &str,
        content: &str,
        position: Position,
    )

    /// property declaration) that has at least two occurrences in its
    /// definition region. A single occurrence offers nothing to link.
    pub fn handle_linked_editing_range(
        &self,
        uri: &str,
        content: &str,
        position: Position,
    ) -> Option<LinkedEditingRanges> {
        let span = self.lookup_symbol_at_position(uri, content, position)?;

        let maps = self.symbol_maps.read();
        let symbol_map = maps.get(uri)?;

        match &span.kind {
            SymbolKind::Variable { name } => {
                // Property declarations should not trigger linked editing —
                // renaming a property requires cross-file awareness.
                if let Some(VarDefKind::Property) = symbol_map.var_def_kind_at(name, span.start) {
                    return None;
                }

                let ranges =
                    collect_variable_ranges_in_region(symbol_map, content, name, span.start);

                // Linked editing with fewer than 2 ranges is pointless.
                if ranges.len() < 2 {
                    return None;
                }

                Some(LinkedEditingRanges {
                    ranges,
                    word_pattern: None,
                })
            }
            _ => None,
        }
    }
}

/// A definition region identified by its owning [`VarDefSite`].