peg::parser!{
pub grammar list_parser() for str{
rule number() -> u32
= n:$(['0'..='9']+) {? n.parse().or(Err("u32"))}
pub rule list() -> Vec<u32>
= "[" l:(number() ** ",") "]" { l }
}
}
fn main()
{
println!("{:?}", list_parser::list("[1,1,2,3,5,8]"));
}