#region License Information
/* HeuristicLab
* Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
*
* This file is part of HeuristicLab.
*
* HeuristicLab is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* HeuristicLab is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with HeuristicLab. If not, see .
*/
#endregion
using System;
using System.Threading;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
namespace HeuristicLab.SequentialEngine {
///
/// Engine for sequential execution of algorithms.
///
[StorableClass("F86FCEA9-230E-404F-800B-1C47121AA375")]
[Item("Sequential Engine", "Engine for sequential execution of algorithms.")]
public class SequentialEngine : Engine {
[StorableConstructor]
protected SequentialEngine(bool deserializing) : base(deserializing) { }
protected SequentialEngine(SequentialEngine original, Cloner cloner) : base(original, cloner) { }
public SequentialEngine() : base() { }
public override IDeepCloneable Clone(Cloner cloner) {
return new SequentialEngine(this, cloner);
}
protected override void Run(CancellationToken cancellationToken) {
IOperation next;
OperationCollection coll;
IAtomicOperation operation;
while (ExecutionStack.Count > 0) {
cancellationToken.ThrowIfCancellationRequested();
next = ExecutionStack.Pop();
if (next is OperationCollection) {
coll = (OperationCollection)next;
for (int i = coll.Count - 1; i >= 0; i--)
if (coll[i] != null) ExecutionStack.Push(coll[i]);
} else if (next is IAtomicOperation) {
operation = (IAtomicOperation)next;
try {
next = operation.Operator.Execute((IExecutionContext)operation, cancellationToken);
}
catch (Exception ex) {
ExecutionStack.Push(operation);
if (ex is OperationCanceledException) throw ex;
else throw new OperatorExecutionException(operation.Operator, ex);
}
if (next != null) ExecutionStack.Push(next);
if (operation.Operator.Breakpoint) {
Log.LogMessage(string.Format("Breakpoint: {0}", operation.Operator.Name != string.Empty ? operation.Operator.Name : operation.Operator.ItemName));
Pause();
}
}
}
}
}
}