Method extract_call

codegraph-kernel/src/python.rs:572–627

extractCall — python `call` through the generic tail (attribute callees).

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

    /// extractCall — python `call` through the generic tail (attribute callees).
    fn extract_call(&mut self, node: Node<'t>) {
        if self.stack.is_empty() {
            return;
        }
        let func = node
            .child_by_field_name("function")
            .or_else(|| node.named_child(0));
        let mut callee_name = String::new();

        if let Some(func) = func {
            if func.kind() == "attribute" {
                // `property` and `field` fields don't exist on attribute —
                // the generic path falls back to namedChild(1) (the attr name).
                let property = func
                    .child_by_field_name("property")
                    .or_else(|| func.child_by_field_name("field"))
                    .or_else(|| func.named_child(1));
                if let Some(property) = property {
                    let method_name = self.text(property);
                    let receiver = func
                        .child_by_field_name("object")
                        .or_else(|| func.child_by_field_name("operand"))
                        .or_else(|| func.child_by_field_name("argument"))
                        .or_else(|| func.named_child(0));
                    if let Some(r) = receiver {
                        if is_literal_receiver(r.kind()) {
                            return;
                        }
                    }
                    let recv_ident = receiver.filter(|r| {
                        matches!(r.kind(), "identifier" | "simple_identifier" | "field_identifier")
                    });
                    if let Some(r) = recv_ident {
                        let receiver_name = self.text(r);
                        if !matches!(receiver_name, "self" | "this" | "cls" | "super") {
                            callee_name = format!("{receiver_name}.{method_name}");
                        } else {
                            callee_name = method_name.to_string();
                        }
                    } else {
                        callee_name = method_name.to_string();
                    }
                }
            } else {
                callee_name = self.text(func).to_string();
            }
        }

        if !callee_name.is_empty() {
            if let Some(c) = util::paren_conversion().captures(&callee_name) {
                callee_name = c[1].to_string();
            }
            let from = self.top_row();
            self.push_ref_at(from, &callee_name.clone(), edge_kind_index("calls").unwrap(), node);
        }
    }

    /// extractDecoratorsFor — python decorators are PRECEDING SIBLINGS inside