grammar;

pub PathList: Vec<&'input str> = {
  => {
    Vec::new()
  },
  <mut left:(<Path> COLON)*> <right:Path> => {
    left.push(right);
    left
  },
};

pub PathListAllowingEmptyPaths: Vec<&'input str> = {
  => vec![""],
  Path => vec![<>],
  <mut left:PathListAllowingEmptyPaths> COLON => {
    left.push("");
    left
  },
  <mut left:PathListAllowingEmptyPaths> COLON <right:Path> => {
    left.push(right);
    left
  },
}

pub Path: &'input str = {
  <PATH_COMPONENT>,
}

// Whitespace is not allowed.
match {
  r"[^z:/]+" => PATH_COMPONENT,

  r"/" => SLASH,

  ":" => COLON,
}