public virtual int GetHashCode(InterpretTrace obj)
{
if (obj == null)
{
throw new ArgumentNullException("obj");
}
if (obj.Transitions.Count == 0)
{
return(0);
}
InterpretTraceTransition last = obj.Transitions.Last.Value;
int transitionCode = last.Transition.GetHashCode();
InterpretTraceTransition lastmatch = obj.Transitions.LastOrDefault(i => i.Transition.IsMatch);
if (lastmatch == null)
{
return(transitionCode);
}
return(transitionCode ^ lastmatch.TokenIndex.GetHashCode());
}
public virtual bool Equals(InterpretTrace x, InterpretTrace y)
{
if (object.ReferenceEquals(x, y))
{
return(true);
}
if (x == null || y == null)
{
return(false);
}
if (object.ReferenceEquals(x.Transitions, y.Transitions))
{
return(true);
}
if (x.Transitions.Count == 0)
{
return(y.Transitions.Count == 0);
}
if (y.Transitions.Count == 0)
{
return(false);
}
// unique on the end context, the last transition's source state, and the end position
for (ContextFrame xframe = x.EndContext, yframe = y.EndContext; true; xframe = xframe.Parent, yframe = yframe.Parent)
{
if (xframe == null || yframe == null)
{
if (xframe != null || yframe != null)
{
return(false);
}
break;
}
if (xframe.Context != yframe.Context)
{
return(false);
}
}
InterpretTraceTransition lastx = x.Transitions.Last.Value;
InterpretTraceTransition lasty = y.Transitions.Last.Value;
if (!EqualityComparer <State> .Default.Equals(lastx.Transition.SourceState, lasty.Transition.SourceState))
{
return(false);
}
InterpretTraceTransition lastxmatch = x.Transitions.LastOrDefault(i => i.Transition.IsMatch);
InterpretTraceTransition lastymatch = y.Transitions.LastOrDefault(i => i.Transition.IsMatch);
if (lastxmatch == null)
{
return(lastymatch == null);
}
if (lastymatch == null)
{
return(false);
}
if (lastxmatch.TokenIndex != lastymatch.TokenIndex)
{
return(false);
}
return(true);
}
