code: function error(sMessage, sInput, iAt) {
  		var oError = new SyntaxError(sMessage);
  
  		oError.at = iAt;
  		oError.text = sInput;
  		if (iAt !== undefined) {
  			sMessage += " at position " + iAt;
  		}
  		Log.error(sMessage, sInput, sExpressionParser);
  		throw oError;
  	}
docs: Throws a SyntaxError with the given <code>sMessage</code> as <code>message</code>, its
  <code>at</code> property set to <code>iAt</code> and its <code>text</code> property to
  <code>sInput</code>.
  In addition, logs a corresponding error message to the console with <code>sInput</code>
  as details.
  
  @param {string} sMessage - the error message
  @param {string} sInput - the input string
  @param {int} [iAt] - the index in the input string where the error occurred; the index
  starts counting at 1 to be consistent with positions provided in tokenizer error messages.