private String searchExpression() {
FuncSymbol func;
boolean flag = true;
String expString = tokens[tIndex];
String tempStr = "";
tIndex++;
if (tokens[tIndex].equalsIgnoreCase("from")) tokens[tIndex] = "equal to";
flag = false;
while (true) {
if ((tempStr = searchOperator(tIndex)) != null) {
if (!tempStr.equalsIgnoreCase("plus plus") && !tempStr.equalsIgnoreCase("minus minus"))
flag = true;
expString =
" " + tempStr; // Note: tIndex automatically incremented by searchOperator() method
} else if (Controller.varSym.searchSymbol(tokens[tIndex])
!= null /*|| TODO Check whether next token is number */) {
if (flag == true) {
flag = false;
expString += " " + tokens[tIndex];
tIndex++;
} else break;
} else if ((func = Controller.funSym.searchSymbol(tokens[tIndex])) != null) {
if (func.getParam().length == 0) {
expString += (" " + tokens[tIndex]);
flag = false;
tIndex++;
} else {
int counter = 0;
int index = tIndex + 1;
VarSymbol var = null;
expString += (" " + tokens[index] + " of");
while (counter < func.getParam().length && index < tokens.length) {
if ((var = Controller.varSym.searchSymbol(tokens[index])) != null) {
if (func.getParam()[counter].equals(var.getDataType())) {
counter++;
expString += (" " + tokens[index]);
}
}
index++;
}
if (index == tokens.length) {
// Error
} else tIndex = index;
}
}
// else
// break;
}
return expString;
}
