Method parse

www/js/_hyperscript.esm.js:4610–4750

(parser)

    }
  }
  static parse(parser) {
    var expr = parser.parseElement("mathOperator");
    var comparisonToken = parser.matchAnyOpToken("<", ">", "<=", ">=", "==", "===", "!=", "!==");
    var operator = comparisonToken ? comparisonToken.value : null;
    var hasRightValue = true;
    var typeCheck = false;
    if (operator == null) {
      if (parser.matchToken("is") || parser.matchToken("am")) {
        if (parser.matchToken("not")) {
          if (parser.matchToken("in")) {
            operator = "not in";
          } else if (parser.matchToken("a") || parser.matchToken("an")) {
            operator = "not a";
            typeCheck = true;
          } else if (parser.matchToken("empty")) {
            operator = "not empty";
            hasRightValue = false;
          } else if (parser.matchToken("between")) {
            operator = "not between";
          } else if (parser.matchToken("really")) {
            operator = "!==";
            if (parser.matchToken("equal")) parser.matchToken("to");
          } else if (parser.matchToken("equal")) {
            parser.matchToken("to");
            operator = "!=";
          } else {
            operator = "is not";
          }
        } else if (parser.matchToken("in")) {
          operator = "in";
        } else if (parser.matchToken("a") || parser.matchToken("an")) {
          operator = "a";
          typeCheck = true;
        } else if (parser.matchToken("empty")) {
          operator = "empty";
          hasRightValue = false;
        } else if (parser.matchToken("between")) {
          operator = "between";
        } else if (parser.matchToken("less")) {
          parser.requireToken("than");
          if (parser.matchToken("or")) {
            parser.requireToken("equal");
            parser.requireToken("to");
            operator = "<=";
          } else {
            operator = "<";
          }
        } else if (parser.matchToken("greater")) {
          parser.requireToken("than");
          if (parser.matchToken("or")) {
            parser.requireToken("equal");
            parser.requireToken("to");
            operator = ">=";
          } else {
            operator = ">";
          }
        } else if (parser.matchToken("really")) {
          operator = "===";