Method extract_variable

codegraph-kernel/src/ruby.rs:675–686

extractVariable — the python/ruby assignment branch (2709-2727): identifier or constant LHS mints a `variable` node (no isConst hook — `MAX = 3` is kind variable) at the ASSIGNMENT node's position, with the `= ` initializer signature.

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

    /// `MAX = 3` is kind variable) at the ASSIGNMENT node's position, with the
    /// `= <first 100 utf16 units>` initializer signature.
    fn extract_variable(&mut self, node: Node<'t>) {
        let docstring = preceding_docstring(node, self.src);
        let left = node.child_by_field_name("left").or_else(|| node.named_child(0));
        let right = node.child_by_field_name("right").or_else(|| node.named_child(1));
        let Some(left) = left else { return };
        if !matches!(left.kind(), "identifier" | "constant") {
            return;
        }
        let name = self.text(left).to_string();
        let signature = right.map(|r| util::init_signature(self.text(r)));
        self.create_node("variable", &name, node, Extra { docstring, signature, visibility: None });
    }

    /// extractImport — every non-body `call` lands here (importTypes:['call']).
    /// Hook (languages/ruby.ts:123): FIRST identifier named child must read