/**
* Transfomiert einen lierale Zeichenkette. <br>
* EBNF:<br>
* <code>("'" {"##"|"''"|"#" impOp "#"| ?-"#"-"'" } "'") |
* (""" {"##"|""""|"#" impOp "#"| ?-"#"-""" } """);</code>
*
* @return CFXD Element
* @throws PageException
*/
protected Ref string() throws PageException {
// Init Parameter
char quoter = cfml.getCurrentLower();
// String str="";
LStringBuffer str = new LStringBuffer();
Ref value = null;
while (cfml.hasNext()) {
cfml.next();
// check sharp
if (cfml.isCurrent('#')) {
if (cfml.isNext('#')) {
cfml.next();
str.append('#');
} else {
cfml.next();
cfml.removeSpace();
if (!str.isEmpty() || value != null) str.append(assignOp());
else value = assignOp();
cfml.removeSpace();
if (!cfml.isCurrent('#'))
throw new ExpressionException("Invalid Syntax Closing [#] not found");
}
} else if (cfml.isCurrent(quoter)) {
if (cfml.isNext(quoter)) {
cfml.next();
str.append(quoter);
} else {
break;
}
}
// all other character
else {
str.append(cfml.getCurrent());
}
}
if (!cfml.forwardIfCurrent(quoter))
throw new ExpressionException(
"Invalid String Literal Syntax Closing [" + quoter + "] not found");
cfml.removeSpace();
mode = STATIC;
if (value != null) {
if (str.isEmpty()) return value;
return new Concat(pc, value, str);
}
return str;
}
