Method parse

www/js/_hyperscript.js:4612–4752

(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 = "===";