Method parse

www/js/_hyperscript.js:5420–5460

(parser)

      this.args = { thing: thingElt, from, inElt, withinElt };
    }
    static parse(parser) {
      var op = parser.matchAnyToken("next", "previous");
      if (!op) return;
      var forwardSearch = op.value === "next";
      var thingElt = parser.parseElement("leaf");
      if (parser.matchToken("from")) {
        parser.pushFollow("in");
        try {
          var from = parser.requireElement("unaryExpression");
        } finally {
          parser.popFollow();
        }
      } else {
        var from = parser.requireElement("implicitMeTarget");
      }
      var inSearch = false;
      var withinElt;
      if (parser.matchToken("in")) {
        inSearch = true;
        var inElt = parser.requireElement("unaryExpression");
      } else if (parser.matchToken("within")) {
        withinElt = parser.requireElement("unaryExpression");
      } else {
        withinElt = null;
      }
      var wrapping = false;
      if (parser.matchToken("with")) {
        parser.requireToken("wrapping");
        wrapping = true;
      }
      return new _RelativePositionalExpression(
        thingElt,
        from,
        forwardSearch,
        inSearch,
        wrapping,
        inElt,
        withinElt,
        op.value
      );
    }
    scanForwardQuery(start, root, match, wrap) {
      var results = root.querySelectorAll(match);
      for (var i = 0; i < results.length; i++) {