const ATOMS: [(&str, Rule); 128] = [
    ("#t", Rule::boolean),
    ("#f", Rule::boolean),
    ("#true", Rule::boolean),
    ("#false", Rule::boolean),
    ("#\\alarm", Rule::character),
    ("#\\backspace", Rule::character),
    ("#\\delete", Rule::character),
    ("#\\escape", Rule::character),
    ("#\\newline", Rule::character),
    ("#\\null", Rule::character),
    ("#\\return", Rule::character),
    ("#\\space", Rule::character),
    ("#\\tab", Rule::character),
    ("#\\a", Rule::character),
    ("#\\x41", Rule::character),
    ("#b+1010", Rule::number),
    ("#b-1010", Rule::number),
    ("#b1010", Rule::number),
    ("#b+inf.0", Rule::number),
    ("#b-inf.0", Rule::number),
    ("#b+nan.0", Rule::number),
    ("#b-nan.0", Rule::number),
    ("#o+52", Rule::number),
    ("#o-52", Rule::number),
    ("#o52", Rule::number),
    ("#o+inf.0", Rule::number),
    ("#o-inf.0", Rule::number),
    ("#o+nan.0", Rule::number),
    ("#o-nan.0", Rule::number),
    ("#x+2A", Rule::number),
    ("#x-2A", Rule::number),
    ("#x2a", Rule::number),
    ("#x+inf.0", Rule::number),
    ("#x-inf.0", Rule::number),
    ("#x+nan.0", Rule::number),
    ("#x-nan.0", Rule::number),
    ("#d+42", Rule::number),
    ("#d-42", Rule::number),
    ("#d42", Rule::number),
    ("#d+inf.0", Rule::number),
    ("#d-inf.0", Rule::number),
    ("#d+nan.0", Rule::number),
    ("#d-nan.0", Rule::number),
    ("+42", Rule::number),
    ("-42", Rule::number),
    ("42", Rule::number),
    ("+inf.0", Rule::number),
    ("-inf.0", Rule::number),
    ("+nan.0", Rule::number),
    ("-nan.0", Rule::number),
    ("42e+10", Rule::number),
    ("42e-10", Rule::number),
    ("42e10", Rule::number),
    ("42E+10", Rule::number),
    ("42E-10", Rule::number),
    ("42E10", Rule::number),
    ("+42e+10", Rule::number),
    ("+42e-10", Rule::number),
    ("+42e10", Rule::number),
    ("+42E+10", Rule::number),
    ("+42E-10", Rule::number),
    ("+42E10", Rule::number),
    ("-42e+10", Rule::number),
    ("-42e-10", Rule::number),
    ("-42e10", Rule::number),
    ("-42E+10", Rule::number),
    ("-42E-10", Rule::number),
    ("-42E10", Rule::number),
    (".42e+10", Rule::number),
    (".42e-10", Rule::number),
    (".42e10", Rule::number),
    (".42E+10", Rule::number),
    (".42E-10", Rule::number),
    (".42E10", Rule::number),
    (".42e+10", Rule::number),
    ("+.42e-10", Rule::number),
    ("+.42e10", Rule::number),
    ("+.42E+10", Rule::number),
    ("+.42E-10", Rule::number),
    ("+.42E10", Rule::number),
    ("-.42e+10", Rule::number),
    ("-.42e-10", Rule::number),
    ("-.42e10", Rule::number),
    ("-.42E+10", Rule::number),
    ("-.42E-10", Rule::number),
    ("-.42E10", Rule::number),
    ("10.42e+10", Rule::number),
    ("10.42e-10", Rule::number),
    ("10.42e10", Rule::number),
    ("10.42E+10", Rule::number),
    ("10.42E-10", Rule::number),
    ("10.42E10", Rule::number),
    ("10.42e+10", Rule::number),
    ("+10.42e-10", Rule::number),
    ("+10.42e10", Rule::number),
    ("+10.42E+10", Rule::number),
    ("+10.42E-10", Rule::number),
    ("+10.42E10", Rule::number),
    ("-10.42e+10", Rule::number),
    ("-10.42e-10", Rule::number),
    ("-10.42e10", Rule::number),
    ("-10.42E+10", Rule::number),
    ("-10.42E-10", Rule::number),
    ("-10.42E10", Rule::number),
    (r#""""#, Rule::string),
    (r#""a""#, Rule::string),
    (r#""Hello World!""#, Rule::string),
    (r#""Hello World!\nGoodbye""#, Rule::string),
    (r#""Hello World!\x21;nGoodbye""#, Rule::string),
    (r#""Hello World!
    Goodbye""#, Rule::string),
    (r#""Hello World! \  
    Goodbye""#, Rule::string),
    (r#"hello"#, Rule::symbol),
    (r#"..."#, Rule::symbol),
    (r#"+"#, Rule::symbol),
    (r#"+soup+"#, Rule::symbol),
    (r#"<=?"#, Rule::symbol),
    (r#"->string"#, Rule::symbol),
    (r#"a34kTMNs"#, Rule::symbol),
    (r#"lambda"#, Rule::symbol),
    (r#"list->vector"#, Rule::symbol),
    (r#"q"#, Rule::symbol),
    (r#"V17a"#, Rule::symbol),
    (r#"the-word-recursion-has-many-meanings"#, Rule::symbol),
    (r#"|two words|"#, Rule::symbol),
    (r#"|two\x20;words|"#, Rule::symbol),
    ("#u8() ; comment", Rule::bytevector),
    ("#u8(0)", Rule::bytevector),
    ("#u8(0 1 2 3 4 #| comment |# 5 6 7 8 9)", Rule::bytevector),
];