protected virtual void PerformAtomicOperation(IAtomicOperation operation, CancellationToken cancellationToken)
{
if (operation != null)
{
try {
IOperation successor = operation.Operator.Execute((IExecutionContext)operation, cancellationToken);
if (successor != null)
{
OperatorTrace.RegisterParenthood(operation, successor);
ExecutionStack.Add(successor);
}
CurrentOperation = null;
}
catch (Exception ex) {
if (ex is OperationCanceledException)
{
throw ex;
}
else
{
throw new OperatorExecutionException(operation.Operator, ex);
}
}
}
}
public DebugEngine()
: base()
{
Log = new Log();
ExecutionStack = new ExecutionStack();
OperatorTrace = new OperatorTrace();
InitializeTimer();
}
public sealed override void Prepare()
{
base.Prepare();
ExecutionStack.Clear();
CurrentOperation = null;
OperatorTrace.Reset();
OnPrepared();
}
public void Prepare(IOperation initialOperation)
{
base.Prepare();
ExecutionStack.Clear();
if (initialOperation != null)
{
ExecutionStack.Add(initialOperation);
}
CurrentOperation = null;
OperatorTrace.Reset();
OnPrepared();
}
/// <summary>
/// Deals with the next operation, if it is an <see cref="AtomicOperation"/> it is executed,
/// if it is a <see cref="CompositeOperation"/> its single operations are pushed on the execution stack.
/// </summary>
/// <remarks>If an error occurs during the execution the operation is aborted and the operation
/// is pushed on the stack again.<br/>
/// If the execution was successful <see cref="EngineBase.OnOperationExecuted"/> is called.</remarks>
protected virtual void ProcessNextOperation(bool logOperations, CancellationToken cancellationToken)
{
IAtomicOperation atomicOperation = CurrentOperation as IAtomicOperation;
OperationCollection operations = CurrentOperation as OperationCollection;
if (atomicOperation != null && operations != null)
{
throw new InvalidOperationException("Current operation is both atomic and an operation collection");
}
if (atomicOperation != null)
{
if (logOperations)
{
Log.LogMessage(string.Format("Performing atomic operation {0}", Utils.Name(atomicOperation)));
}
PerformAtomicOperation(atomicOperation, cancellationToken);
}
else if (operations != null)
{
if (logOperations)
{
Log.LogMessage("Expanding operation collection");
}
ExecutionStack.AddRange(operations.Reverse());
CurrentOperation = null;
}
else if (ExecutionStack.Count > 0)
{
if (logOperations)
{
Log.LogMessage("Popping execution stack");
}
CurrentOperation = ExecutionStack.Last();
ExecutionStack.RemoveAt(ExecutionStack.Count - 1);
}
else
{
if (logOperations)
{
Log.LogMessage("Nothing to do");
}
}
OperatorTrace.Regenerate(CurrentAtomicOperation);
}
protected OperatorTrace(OperatorTrace original, Cloner cloner)
{
cloner.RegisterClonedObject(original, this);
AddRange(original.Select(op => cloner.Clone(op)));
parents = original.parents.ToDictionary(kvp => cloner.Clone(kvp.Key), kvp => cloner.Clone(kvp.Value));
}