Method extract_inheritance

codegraph-kernel/src/ccpp/mod.rs:1580–1617

extractInheritance — the branches whose node kinds occur in the c/cpp grammars: base_class_clause (#1043), the field_declaration Go-embedding shape, and the field_declaration_list recursion that reaches it.

(&mut self, node: Node<'t>, class_row: u32)

    /// grammars: base_class_clause (#1043), the field_declaration Go-embedding
    /// shape, and the field_declaration_list recursion that reaches it.
    fn extract_inheritance(&mut self, node: Node<'t>, class_row: u32) {
        let extends_kind = edge_kind_index("extends").unwrap();
        for i in 0..node.named_child_count() {
            let Some(child) = node.named_child(i) else { continue };
            match child.kind() {
                "base_class_clause" => {
                    for j in 0..child.named_child_count() {
                        let Some(t) = child.named_child(j) else { continue };
                        if matches!(
                            t.kind(),
                            "type_identifier" | "qualified_identifier" | "template_type"
                        ) {
                            let name = strip_cpp_template_args(self.text(t));
                            self.push_ref_at(class_row, &name, extends_kind, t);
                        }
                    }
                }
                "field_declaration" => {
                    let has_field_identifier = (0..child.named_child_count())
                        .filter_map(|j| child.named_child(j))
                        .any(|c| c.kind() == "field_identifier");
                    if !has_field_identifier {
                        let type_id = (0..child.named_child_count())
                            .filter_map(|j| child.named_child(j))
                            .find(|c| c.kind() == "type_identifier");
                        if let Some(type_id) = type_id {
                            let name = self.text(type_id).to_string();
                            self.push_ref_at(class_row, &name, extends_kind, type_id);
                        }
                    }
                }
                "field_declaration_list" | "class_heritage" => {
                    self.extract_inheritance(child, class_row);
                }
                _ => {}
            }
        }
    }

    // --- fn-ref capture (#756, cFamilySpec) ----------------------------------