use crate::syntax::builders::element_access::build_element_access_node;
use crate::syntax::fields::go::slice_expression;
use crate::syntax::{SyntaxGraphArgs, SyntaxGraphError};
use crate::NodeId;
pub fn reader(
args: &mut SyntaxGraphArgs<'_>,
n_id: NodeId,
) -> Result<Option<NodeId>, SyntaxGraphError> {
let operand_id = args.required_field_alt(n_id, slice_expression::OPERAND)?;
let start_id = args.optional_field_alt(n_id, slice_expression::START);
build_element_access_node(args, n_id, operand_id, start_id).map(Some)
}