Function commasep

lib/codemirror/mode/rust/rust.js:173–183

(comb, end)

  poplex.lex = typecx.lex = valcx.lex = true;

  function commasep(comb, end) {
    function more(type) {
      if (type == ",") return cont(comb, more);
      if (type == end) return cont();
      return cont(more);
    }
    return function(type) {
      if (type == end) return cont();
      return pass(comb, more);
    };
  }

  function stat_of(comb, tag) {
    return cont(pushlex("stat", tag), comb, poplex, block);