protected Ref json(FunctionLibFunction flf, char start, char end) throws PageException {
// print.out("start:"+start+":"+cfml.getCurrent());
if (!cfml.isCurrent(start)) return null;
Ref[] args = functionArg(flf.getName(), false, flf, end);
// if (!cfml.forwardIfCurrent(end))
// throw new ExpressionException("Invalid Syntax Closing ["+end+"] not found");
return new BIFCall(pc, flf, args);
}
private boolean isDynamic(FunctionLibFunction flf) {
return flf.getArgType() == FunctionLibFunction.ARG_DYNAMIC;
}
/**
* Liest die Argumente eines Funktonsaufruf ein und prft ob die Funktion innerhalb der FLD
* (Function Library Descriptor) definiert ist. Falls sie existiert wird die Funktion gegen diese
* geprft und ein build-in-function CFXD Element generiert, ansonsten ein normales funcion-call
* Element. <br>
* EBNF:<br>
* <code>[impOp{"," impOp}];</code>
*
* @param name Identifier der Funktion als Zeichenkette
* @param checkLibrary Soll geprft werden ob die Funktion innerhalb der Library existiert.
* @param flf FLD Function definition .
* @return CFXD Element
* @throws PageException
*/
private Ref[] functionArg(String name, boolean checkLibrary, FunctionLibFunction flf, char end)
throws PageException {
// get Function Library
checkLibrary = checkLibrary && flf != null;
// Function Attributes
ArrayList arr = new ArrayList();
ArrayList arrFuncLibAtt = null;
int libLen = 0;
if (checkLibrary) {
arrFuncLibAtt = flf.getArg();
libLen = arrFuncLibAtt.size();
}
int count = 0;
do {
cfml.next();
cfml.removeSpace();
// finish
if (cfml.isCurrent(end)) break;
// too many Attributes
boolean isDynamic = false;
int max = -1;
if (checkLibrary) {
isDynamic = isDynamic(flf);
max = flf.getArgMax();
// Dynamic
if (isDynamic) {
if (max != -1 && max <= count)
throw new ExpressionException("too many Attributes in function [" + name + "]");
}
// Fix
else {
if (libLen <= count)
throw new ExpressionException("too many Attributes in function [" + name + "]");
}
}
if (checkLibrary && !isDynamic) {
// current attribues from library
FunctionLibFunctionArg funcLibAtt = (FunctionLibFunctionArg) arrFuncLibAtt.get(count);
short type = CFTypes.toShort(funcLibAtt.getType(), CFTypes.TYPE_UNKNOW);
if (type == CFTypes.TYPE_VARIABLE_STRING) {
arr.add(functionArgDeclarationVarString());
} else {
arr.add(new Casting(pc, funcLibAtt.getTypeAsString(), type, functionArgDeclaration()));
}
} else {
arr.add(functionArgDeclaration());
}
// obj=andOrXor();
cfml.removeSpace();
count++;
} while (cfml.isCurrent(','));
// end with ) ??
if (!cfml.forwardIfCurrent(end)) {
if (name.startsWith("_json"))
throw new ExpressionException("Invalid Syntax Closing [" + end + "] not found");
throw new ExpressionException(
"Invalid Syntax Closing [" + end + "] for function [" + name + "] not found");
}
// check min attributes
if (checkLibrary && flf.getArgMin() > count)
throw new ExpressionException("to less Attributes in function [" + name + "]");
cfml.removeSpace();
return (Ref[]) arr.toArray(new Ref[arr.size()]);
}
