/**
* @param callerForceArrayFlag <c>true</c> if one of the current node's parents is a
* function Ptg which Has been Changed from default 'V' To 'A' type (due To requirements on
* the function return value).
*/
private void TransformNode(ParseNode node, byte desiredOperandClass,
bool callerForceArrayFlag)
{
Ptg token = node.GetToken();
ParseNode[] children = node.GetChildren();
bool IsSimpleValueFunc = IsSimpleValueFunction(token);
if (IsSimpleValueFunc)
{
bool localForceArray = desiredOperandClass == Ptg.CLASS_ARRAY;
for (int i = 0; i < children.Length; i++)
{
TransformNode(children[i], desiredOperandClass, localForceArray);
}
SetSimpleValueFuncClass((AbstractFunctionPtg)token, desiredOperandClass, callerForceArrayFlag);
return;
}
if (IsSingleArgSum(token)) {
// Need to process the argument of SUM with transformFunctionNode below
// so make a dummy FuncVarPtg for that call.
token = FuncVarPtg.SUM;
// Note - the tAttrSum token (node.getToken()) is a base
// token so does not need to have its operand class set
}
if (token is ValueOperatorPtg || token is ControlPtg
|| token is MemFuncPtg
|| token is MemAreaPtg
|| token is UnionPtg)
{
// Value Operator Ptgs and Control are base Tokens, so Token will be unchanged
// but any child nodes are processed according To desiredOperandClass and callerForceArrayFlag
// As per OOO documentation Sec 3.2.4 "Token Class Transformation", "Step 1"
// All direct operands of value operators that are initially 'R' type will
// be converted To 'V' type.
byte localDesiredOperandClass = desiredOperandClass == Ptg.CLASS_REF ? Ptg.CLASS_VALUE : desiredOperandClass;
for (int i = 0; i < children.Length; i++)
{
TransformNode(children[i], localDesiredOperandClass, callerForceArrayFlag);
}
return;
}
if (token is AbstractFunctionPtg)
{
TransformFunctionNode((AbstractFunctionPtg)token, children, desiredOperandClass, callerForceArrayFlag);
return;
}
if (children.Length > 0)
{
//if (token == RangePtg.instance)
if(token is OperationPtg)
{
// TODO is any Token transformation required under the various ref operators?
return;
}
throw new InvalidOperationException("Node should not have any children");
}
if (token.IsBaseToken)
{
// nothing To do
return;
}
token.PtgClass = (TransformClass(token.PtgClass, desiredOperandClass, callerForceArrayFlag));
}
