Method extract_rust_impl_item

codegraph-kernel/src/rustlang.rs:1066–1083

extractRustImplItem — `impl Trait for Type` back-reference from the grammar's `trait` / `type` fields (#1588; an inherent impl has no `trait` field and emits nothing). Target = FIRST earlier node of kind struct/union/enum/class (never trait) named by impl_type_name; ref FROM the type's node, named by the trait's full text (scoped path / generic args kept), at the trait node's position.

(&mut self, node: Node<'t>)

    /// the type's node, named by the trait's full text (scoped path / generic
    /// args kept), at the trait node's position.
    fn extract_rust_impl_item(&mut self, node: Node<'t>) {
        let Some(trait_node) = node.child_by_field_name("trait") else {
            return;
        };
        let trait_name = self.text(trait_node).to_string();
        let Some(type_name) = self.impl_type_name(node.child_by_field_name("type")) else {
            return;
        };

        let target_row = self
            .nodes_meta
            .iter()
            .position(|m| m.name == type_name && matches!(m.kind, "struct" | "union" | "enum" | "class"))
            .map(|i| i as u32);
        if let Some(target_row) = target_row {
            self.push_ref_at(target_row, &trait_name, edge_kind_index("implements").unwrap(), trait_node);
        }
    }

    /// extractTypeAnnotations — parameters + return_type subtrees, one
    /// `references` ref per type_identifier leaf not in BUILTIN_TYPES. The