private void VerifyArgument(System.Xml.XPath.Function root)
{
if (root.ArgumentList != null)
{
for (int i = 0; i < root.ArgumentList.Count; i++)
{
Operand operand = root.ArgumentList[i] as Operand;
if ((operand == null) || (operand.ReturnType != XPathResultType.String))
{
throw new XPathException(Res.Xp_InvalidPatternString, _query);
}
}
}
}
private IQuery ProcessFunction(
System.Xml.XPath.Function root,
IQuery qyInput, ref bool cache, ref bool position)
{
_specialAxis = false;
IQuery qy = null;
switch (root.TypeOfFunction)
{
case FT.FuncLast:
qy = new MethodOperand(
null,
root.TypeOfFunction);
cache = true;
return(qy);
case FT.FuncPosition:
qy = new MethodOperand(
null,
root.TypeOfFunction);
position = true;
return(qy);
case FT.FuncCount:
return(new MethodOperand(
ProcessNode((AstNode)(root.ArgumentList[0]), null,
Regular_D,
Axis.AxisType.None, ref cache, ref position),
FT.FuncCount));
case FT.FuncID:
_specialAxis = true;
return(new IDQuery(
ProcessNode((AstNode)(root.ArgumentList[0]), null,
Regular_D,
Axis.AxisType.None, ref cache, ref position)));
case FT.FuncLocalName:
case FT.FuncNameSpaceUri:
case FT.FuncName:
if (root.ArgumentList != null && root.ArgumentList.Count > 0)
{
return(new MethodOperand(ProcessNode(
(AstNode)(root.ArgumentList[0]), null,
Regular_D,
Axis.AxisType.None, ref cache, ref position),
root.TypeOfFunction));
}
else
{
return(new MethodOperand(
null,
root.TypeOfFunction));
}
case FT.FuncString:
case FT.FuncConcat:
case FT.FuncStartsWith:
case FT.FuncContains:
case FT.FuncSubstringBefore:
case FT.FuncSubstringAfter:
case FT.FuncSubstring:
case FT.FuncStringLength:
case FT.FuncNormalize:
case FT.FuncTranslate:
ArrayList ArgList = null;
if (root.ArgumentList != null)
{
int count = 0;
ArgList = new ArrayList();
while (count < root.ArgumentList.Count)
{
ArgList.Add(ProcessNode(
(AstNode)root.ArgumentList[count++],
null, Regular_D,
Axis.AxisType.None, ref cache, ref position));
}
}
return(new StringFunctions(ArgList, root.TypeOfFunction));
case FT.FuncNumber:
case FT.FuncSum:
case FT.FuncFloor:
case FT.FuncCeiling:
case FT.FuncRound:
if (root.ArgumentList != null && root.ArgumentList.Count > 0)
{
return(new NumberFunctions(
ProcessNode((AstNode)root.ArgumentList[0],
null, Regular_D,
Axis.AxisType.None, ref cache, ref position), root.TypeOfFunction));
}
else
{
return(new NumberFunctions(null));
}
case FT.FuncTrue:
case FT.FuncFalse:
return(new BooleanFunctions(null, root.TypeOfFunction));
case FT.FuncNot:
case FT.FuncLang:
case FT.FuncBoolean:
return(new BooleanFunctions(
ProcessNode((AstNode)root.ArgumentList[0],
null, Regular_D,
Axis.AxisType.None, ref cache, ref position), root.TypeOfFunction));
case FT.FuncUserDefined:
_hasPrefix = true;
ArgList = null;
if (!allowCurrent && root.Name == "current" && root.Prefix == "")
{
throw new XPathException(Res.Xp_InvalidPatternString, _query);
}
if (!allowKey && root.Name == "key" && root.Prefix == "")
{
throw new XPathException(Res.Xp_InvalidKeyPattern, _query);
}
if (root.ArgumentList != null)
{
int count = 0;
ArgList = new ArrayList();
while (count < root.ArgumentList.Count)
{
ArgList.Add(ProcessNode(
(AstNode)root.ArgumentList[count++],
null, Regular_D,
Axis.AxisType.None, ref cache, ref position));
}
}
return(new XsltFunction(root.Prefix, root.Name, ArgList));
default:
throw new XPathException(Res.Xp_NotSupported, _query);
}
//return null;
}