public Operator getOperator(String literal) {
		int operatorCount = this.operatorList.size();
		for(int i = 0;i<operatorCount;i++) {
			Operator currentOperator = this.operatorList.get(i);
			String currentText = currentOperator.getLiteral();

			boolean isMatchingExpression = literal.equals(currentText);

			if (isMatchingExpression) {
				return currentOperator;
			}
		}

		return null;
	}