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using System;
using System.Xml;
using Mono.Debugger.Backend;
namespace Mono.Debugger
{
public class ExpressionBreakpoint : Breakpoint
{
public readonly DebuggerSession Session;
public readonly LocationType LocationType;
BreakpointHandle handle;
public override bool IsPersistent {
get { return true; }
}
public override bool IsActivated {
get { return handle != null; }
}
internal override BreakpointHandle Resolve (Thread target, StackFrame frame)
{
if (handle != null)
return handle;
SourceLocation location = Session.ParseLocation (
target, frame, LocationType, Name);
if (location == null)
throw new TargetException (TargetError.LocationInvalid);
handle = location.ResolveBreakpoint (Session, this);
return handle;
}
public override void Activate (Thread thread)
{
Resolve (thread, thread.CurrentFrame);
if (handle == null)
throw new TargetException (TargetError.LocationInvalid);
handle.Insert (thread);
}
public override void Deactivate (Thread target)
{
if (handle != null) {
handle.Remove (target);
handle = null;
}
}
internal override void OnTargetExited ()
{
handle = null;
}
protected override void GetSessionData (XmlElement root, XmlElement element)
{
XmlElement location_e = root.OwnerDocument.CreateElement ("Expression");
location_e.SetAttribute ("type", LocationType.ToString ());
location_e.SetAttribute ("expression", Name);
element.AppendChild (location_e);
}
internal ExpressionBreakpoint (DebuggerSession session, int index, ThreadGroup group,
LocationType type, string expression)
: base (EventType.Breakpoint, index, expression, group)
{
this.Session = session;
this.LocationType = type;
}
internal ExpressionBreakpoint (DebuggerSession session, ThreadGroup group,
LocationType type, string expression)
: base (EventType.Breakpoint, expression, group)
{
this.Session = session;
this.LocationType = type;
}
}
}
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