internal SafeSeekableNavigator(SeekableXPathNavigator navigator, int nodeCountMax)
{
this.navigator = navigator;
this.counter = this;
this.nodeCount = nodeCountMax;
this.nodeCountMax = nodeCountMax;
}
internal SafeSeekableNavigator(SeekableXPathNavigator navigator, int nodeCountMax)
{
this.navigator = navigator;
this.counter = this;
this.nodeCount = nodeCountMax;
this.nodeCountMax = nodeCountMax;
}
/// <summary>
/// Evaluates the filter over infosets surfaced via the given navigator by using the Fx engine
/// We assume that the filter was pre-compiled using the framework engine
/// </summary>
internal bool MatchFx(XPathNavigator navigator)
{
INodeCounter counter = navigator as INodeCounter;
if (counter == null)
{
navigator = new SafeSeekableNavigator(new GenericSeekableNavigator(navigator), this.NodeQuota);
}
else
{
counter.CounterMarker = this.NodeQuota;
counter.MaxCounter = this.NodeQuota;
}
Fx.Assert(null != this.query && OpcodeID.MatchSingleFx == this.query.ID, "");
try
{
return(((MatchSingleFxEngineResultOpcode)this.query).Match(navigator));
}
catch (XPathNavigatorException e)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(e.Process(this.query));
}
catch (NavigatorInvalidBodyAccessException e)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(e.Process(this.query));
}
}
internal bool MatchFx(XPathNavigator navigator)
{
bool flag;
INodeCounter counter = navigator as INodeCounter;
if (counter == null)
{
navigator = new SafeSeekableNavigator(new GenericSeekableNavigator(navigator), base.NodeQuota);
}
else
{
counter.CounterMarker = base.NodeQuota;
counter.MaxCounter = base.NodeQuota;
}
try
{
flag = ((MatchSingleFxEngineResultOpcode)base.query).Match(navigator);
}
catch (XPathNavigatorException exception)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(exception.Process(base.query));
}
catch (NavigatorInvalidBodyAccessException exception2)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(exception2.Process(base.query));
}
return(flag);
}
public override bool IsSamePosition(XPathNavigator other)
{
if (other == null)
{
return(false);
}
SafeSeekableNavigator navigator = other as SafeSeekableNavigator;
return((navigator != null) && this.navigator.IsSamePosition(navigator.navigator));
}
public override bool IsDescendant(XPathNavigator navigator)
{
if (navigator == null)
{
return(false);
}
SafeSeekableNavigator navigator2 = navigator as SafeSeekableNavigator;
return((navigator2 != null) && this.navigator.IsDescendant(navigator2.navigator));
}
public override bool MoveTo(XPathNavigator other)
{
if (other == null)
{
return(false);
}
this.IncrementNodeCount();
SafeSeekableNavigator navigator = other as SafeSeekableNavigator;
return((navigator != null) && this.navigator.MoveTo(navigator.navigator));
}
public override XmlNodeOrder ComparePosition(XPathNavigator navigator)
{
if (navigator != null)
{
SafeSeekableNavigator navigator2 = navigator as SafeSeekableNavigator;
if (navigator2 != null)
{
return(this.navigator.ComparePosition(navigator2.navigator));
}
}
return(XmlNodeOrder.Unknown);
}
internal SeekableXPathNavigator CreateSafeNavigator(SeekableXPathNavigator navigator)
{
INodeCounter counter = navigator as INodeCounter;
if (counter != null)
{
counter.CounterMarker = this.maxNodes;
counter.MaxCounter = this.maxNodes;
return(navigator);
}
navigator = new SafeSeekableNavigator(navigator, this.maxNodes);
return(navigator);
}
internal virtual void Init(SeekableXPathNavigator navigator, int nodeCountMax)
{
this.navigator = navigator;
this.nodeCount = nodeCountMax;
this.counter = this;
}
internal SafeSeekableNavigator(SafeSeekableNavigator nav)
{
this.navigator = (SeekableXPathNavigator)nav.navigator.Clone();
this.counter = nav.counter;
}
internal SafeSeekableNavigator(SafeSeekableNavigator nav)
{
this.navigator = (SeekableXPathNavigator)nav.navigator.Clone();
this.counter = nav.counter;
}
internal bool MatchFx(XPathNavigator navigator)
{
bool flag;
INodeCounter counter = navigator as INodeCounter;
if (counter == null)
{
navigator = new SafeSeekableNavigator(new GenericSeekableNavigator(navigator), base.NodeQuota);
}
else
{
counter.CounterMarker = base.NodeQuota;
counter.MaxCounter = base.NodeQuota;
}
try
{
flag = ((MatchSingleFxEngineResultOpcode) base.query).Match(navigator);
}
catch (XPathNavigatorException exception)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(exception.Process(base.query));
}
catch (NavigatorInvalidBodyAccessException exception2)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(exception2.Process(base.query));
}
return flag;
}
internal virtual void Init(SeekableXPathNavigator navigator, int nodeCountMax)
{
this.navigator = navigator;
this.nodeCount = nodeCountMax;
this.counter = this;
}
