text: import { getLineInfo } from "../util/location";
  import Parser from "./index";
  
  const pp = Parser.prototype;
  
  // This function is used to raise exceptions on parse errors. It
  // takes an offset integer (into the current `input`) to indicate
  // the location of the error, attaches the position to the end
  // of the error message, and then raises a `SyntaxError` with that
  // message.
  
  pp.raise = function (pos, message) {
    const loc = getLineInfo(this.input, pos);
    message += ` (${loc.line}:${loc.column})`;
    const err = new SyntaxError(message);
    err.pos = pos;
    err.loc = loc;
    throw err;
  };
  