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using System;
using System.Xml;
using Mono.Debugger.Backend;
using System.Runtime.Serialization;
using Mono.Debugger.Languages;
using Mono.Debugger.Languages.Mono;
namespace Mono.Debugger
{
[Serializable]
public sealed class ExceptionCatchPoint : Event
{
int handle = -1;
public override bool IsPersistent {
get { return true; }
}
internal ExceptionCatchPoint (ThreadGroup group, TargetType exception)
: base (EventType.CatchException, exception.Name, group)
{
this.exception = exception;
}
internal ExceptionCatchPoint (int index, ThreadGroup group, string name)
: base (EventType.CatchException, index, name, group)
{ }
public override bool IsActivated {
get { return handle > 0; }
}
public override void Activate (Thread target)
{
lock (this) {
EnableCatchpoint (target);
}
}
public override void Deactivate (Thread target)
{
lock (this) {
DisableCatchpoint (target);
}
}
internal override void OnTargetExited ()
{
exception = null;
handle = -1;
}
public override void Remove (Thread target)
{
lock (this) {
DisableCatchpoint (target);
}
}
void EnableCatchpoint (Thread target)
{
lock (this) {
if (handle > 0)
return;
handle = target.AddEventHandler (this);
}
}
void DisableCatchpoint (Thread target)
{
lock (this) {
if (handle > 0)
target.RemoveEventHandler (handle);
handle = -1;
}
}
bool IsSubclassOf (TargetMemoryAccess target, TargetStructType type,
TargetType parent)
{
while (type != null) {
if (type == parent)
return true;
if (!type.HasParent)
return false;
type = type.GetParentType (target);
}
return false;
}
internal bool CheckException (MonoLanguageBackend mono, TargetMemoryAccess target,
TargetAddress address)
{
TargetClassObject exc = mono.CreateObject (target, address) as TargetClassObject;
if (exc == null)
return false; // OOOPS
if (exception == null)
exception = mono.LookupType (Name);
if (exception == null)
return false;
return IsSubclassOf (target, exc.Type, exception);
}
protected override void GetSessionData (XmlElement root, XmlElement element)
{
XmlElement exception_e = root.OwnerDocument.CreateElement ("Exception");
exception_e.SetAttribute ("type", Name);
element.AppendChild (exception_e);
}
TargetType exception;
}
}
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