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using System;
using System.Collections.Generic;
using Mono.Debugging.Backend;
namespace Mono.Debugging.Client
{
[Serializable]
public class Backtrace
{
IBacktrace serverBacktrace;
int count;
[NonSerialized]
DebuggerSession session;
List<StackFrame> frames;
public Backtrace (IBacktrace serverBacktrace)
{
this.serverBacktrace = serverBacktrace;
count = serverBacktrace.FrameCount;
// Get some initial frames
if (count > 0)
GetFrame (0);
}
internal void Attach (DebuggerSession session)
{
this.session = session;
serverBacktrace = session.WrapDebuggerObject (serverBacktrace);
if (frames != null) {
foreach (StackFrame f in frames) {
f.Attach (session);
f.SourceBacktrace = serverBacktrace;
}
}
}
public int FrameCount
{
get { return count; }
}
public StackFrame GetFrame (int n)
{
if (frames == null)
frames = new List<StackFrame>();
if (n >= frames.Count) {
StackFrame[] newSet = serverBacktrace.GetStackFrames(frames.Count, n + 20);
foreach (StackFrame sf in newSet) {
sf.SourceBacktrace = serverBacktrace;
sf.Index = frames.Count;
frames.Add (sf);
sf.Attach (session);
}
}
if (frames.Count > 0)
return frames[System.Math.Min (System.Math.Max (0, n), frames.Count - 1)];
return null;
}
}
}
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