private static Item cmp(char c) {
		
		pos++;
		char c2 = text.charAt(pos);
		if(c2 == '=') {
			pos++;
			Item i = null;
			if(c == '=') {
				i = new Item(id, Constants.EQL, null);
			}
			else if(c == '>') {
				i = new Item(id, Constants.GEQ, null);
			}
			else if(c == '<') {
				i = new Item(id, Constants.LEQ, null);
			}
			id++;
			pos++;
			return i;
		}
		else {
			Item i = null;
			if(c == '=') {
				i = new Item(id, Constants.BECOMES, null);
			}
			else if(c == '>') {
				i = new Item(id, Constants.GTR, null);
			}
			else if(c == '<') {
				i = new Item(id, Constants.LSS, null);
			}
			id++;
			return i;
		}
	}