// constructor
internal Axis(AxisType axistype, AstNode input) {
_axistype = axistype;
_input = input;
_prefix = String.Empty;
_name = String.Empty;
_nodetype = XPathNodeType.All;
this.abbrAxis = true;
}
// constructor
internal Axis(
AxisType axistype,
AstNode input,
String prefix,
String name,
XPathNodeType nodetype) {
_axistype = axistype;
_input = input;
_prefix = prefix;
_name = name;
_nodetype = nodetype;
}
internal Function(FunctionType ftype, AstNode arg) {
_functionType = ftype;
_argumentList = new ArrayList();
_argumentList.Add(arg);
}
internal Operator(Op op, AstNode opnd1, AstNode opnd2) {
_operatorType = op;
_opnd1 = opnd1;
_opnd2 = opnd2;
}
private IQuery ProcessNode(AstNode root, IQuery qyInput) {
IQuery result = null;
if (root == null)
return null;
switch (root.TypeOfAst) {
case AstNode.QueryType.Axis:
Axis axis = (Axis)root;
result = ProcessAxis(axis, ProcessNode(axis.Input, qyInput));
break;
case AstNode.QueryType.Operator:
result = ProcessOperator((Operator)root, null);
break;
case AstNode.QueryType.Filter:
result = ProcessFilter((Filter)root);
break;
case AstNode.QueryType.ConstantOperand:
result = ProcessOperand((Operand)root);
break;
case AstNode.QueryType.Function:
result = ProcessFunction((Function)root, qyInput);
break;
case AstNode.QueryType.Root:
result = new AbsoluteQuery();
break;
case AstNode.QueryType.Group:
result = new GroupQuery(ProcessNode(((Group)root).GroupNode, qyInput));
break;
default:
Debug.Assert(false, "Unknown QueryType encountered!!");
break;
}
return result;
}