override internal XPathNavigator MatchNode(XPathNavigator current)
{
XPathNavigator context = _child.MatchNode(current);
if (context == null)
{
return(null);
}
context = m_qyInput.MatchNode(context);
if (context == null)
{
return(null);
}
setContext(context.Clone());
XPathNavigator result = advance();
while (result != null)
{
if (result.IsSamePosition(current))
{
return(context);
}
result = advance();
}
return(null);
}
override internal XPathNavigator MatchNode(XPathNavigator context)
{
if (context != null)
{
XPathNavigator result = qy1.MatchNode(context);
if (result != null)
{
return(result);
}
return(qy2.MatchNode(context));
}
return(null);
}
/// <include file='doc\XPathNavigator.uex' path='docs/doc[@for="XPathNavigator.Matches"]/*' />
public virtual bool Matches(XPathExpression expr)
{
CompiledXpathExpr cexpr = expr as CompiledXpathExpr;
if (cexpr == null)
{
throw new XPathException(Res.Xp_BadQueryObject);
}
IQuery query = cexpr.QueryTree;
if (query.ReturnType() != XPathResultType.NodeSet)
{
throw new XPathException(Res.Xp_NodeSetExpected);
}
try {
return(query.MatchNode(this) != null);
}
catch (XPathException) {
throw new XPathException(Res.Xp_InvalidPattern, cexpr.Expression);
}
}
protected XPathNavigator MatchNode(XPathNavigator current, IQuery query) {
XPathNavigator context;
if (current != null) {
context = query.MatchNode(current);
if (context != null) {
if (_opnd.ReturnType() == XPathResultType.Number) {
if (_opnd.getName() == Querytype.Constant) {
XPathNavigator result = current.Clone();
int i=0;
if (query.getName() == Querytype.Child) {
result.MoveToParent();
result.MoveToFirstChild();
while (true) {
if (((ChildrenQuery)query).matches(result)){
i++;
if (current.IsSamePosition(result))
if (XmlConvert.ToXPathDouble(_opnd.getValue(current, null)) == i)
return context;
else
return null;
}
if (!result.MoveToNext())
return null;
}
}
if (query.getName() == Querytype.Attribute) {
result.MoveToParent();
result.MoveToFirstAttribute();
while (true) {
if (((AttributeQuery)query).matches(result))
i++;
if (current.IsSamePosition(result))
if (XmlConvert.ToXPathDouble(_opnd.getValue(current, null)) == i)
return context;
else
return null;
if (!result.MoveToNextAttribute())
return null;
}
}
}
else {
setContext(context.Clone());
XPathNavigator result = advance();
while (result != null) {
if (result.IsSamePosition(current))
return context;
result = advance();
}
}
}
if (_opnd.ReturnType() == XPathResultType.NodeSet) {
_opnd.setContext(current);
if (_opnd.advance() != null)
return context;
else
return null;
}
if (_opnd.ReturnType() == XPathResultType.Boolean) {
if (noPosition) {
if ((bool)_opnd.getValue(current, null)) {
return context;
}
return null;
}
setContext(context.Clone());
XPathNavigator result = advance();
while (result != null) {
if (result.IsSamePosition(current))
return context;
result = advance();
}
return null;
}
if (_opnd.ReturnType() == XPathResultType.String)
if (_opnd.getValue(context, null).ToString().Length >0)
return context;
else
return null;
}
else
return null;
}
return null;
}
protected XPathNavigator MatchNode(XPathNavigator current, IQuery query)
{
XPathNavigator context;
if (current != null)
{
context = query.MatchNode(current);
if (context != null)
{
if (_opnd.ReturnType() == XPathResultType.Number)
{
if (_opnd.getName() == Querytype.Constant)
{
XPathNavigator result = current.Clone();
int i = 0;
if (query.getName() == Querytype.Child)
{
result.MoveToParent();
result.MoveToFirstChild();
while (true)
{
if (((ChildrenQuery)query).matches(result))
{
i++;
if (current.IsSamePosition(result))
{
if (XmlConvert.ToXPathDouble(_opnd.getValue(current, null)) == i)
{
return(context);
}
else
{
return(null);
}
}
}
if (!result.MoveToNext())
{
return(null);
}
}
}
if (query.getName() == Querytype.Attribute)
{
result.MoveToParent();
result.MoveToFirstAttribute();
while (true)
{
if (((AttributeQuery)query).matches(result))
{
i++;
}
if (current.IsSamePosition(result))
{
if (XmlConvert.ToXPathDouble(_opnd.getValue(current, null)) == i)
{
return(context);
}
else
{
return(null);
}
}
if (!result.MoveToNextAttribute())
{
return(null);
}
}
}
}
else
{
setContext(context.Clone());
XPathNavigator result = advance();
while (result != null)
{
if (result.IsSamePosition(current))
{
return(context);
}
result = advance();
}
}
}
if (_opnd.ReturnType() == XPathResultType.NodeSet)
{
_opnd.setContext(current);
if (_opnd.advance() != null)
{
return(context);
}
else
{
return(null);
}
}
if (_opnd.ReturnType() == XPathResultType.Boolean)
{
if (noPosition)
{
if ((bool)_opnd.getValue(current, null))
{
return(context);
}
return(null);
}
setContext(context.Clone());
XPathNavigator result = advance();
while (result != null)
{
if (result.IsSamePosition(current))
{
return(context);
}
result = advance();
}
return(null);
}
if (_opnd.ReturnType() == XPathResultType.String)
{
if (_opnd.getValue(context, null).ToString().Length > 0)
{
return(context);
}
else
{
return(null);
}
}
}
else
{
return(null);
}
}
return(null);
}