#region License Information
/* HeuristicLab
* Copyright (C) 2002-2014 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.Collections.Generic;
using System.Linq;
using System.Reflection;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
using HeuristicLab.Scripting;
namespace HeuristicLab.Problems.Programmable {
[Item("ProblemDefinitionScript", "Script that defines the parameter vector and evaluates the solution for a programmable problem.")]
[StorableClass]
public abstract class ProblemDefinitionScript : Script, IProblemDefinition {
protected bool SuppressEvents { get; set; }
[Storable]
private VariableStore variableStore;
public VariableStore VariableStore {
get { return variableStore; }
}
[StorableConstructor]
protected ProblemDefinitionScript(bool deserializing) : base(deserializing) { }
protected ProblemDefinitionScript(ProblemDefinitionScript original, Cloner cloner)
: base(original, cloner) {
variableStore = cloner.Clone(original.variableStore);
}
protected ProblemDefinitionScript() :base(){
variableStore = new VariableStore();
}
IEncoding IProblemDefinition.Encoding {
get { return CompiledProblemDefinition != null ? CompiledProblemDefinition.Encoding : null; }
}
IEnumerable IProblemDefinition.GetNeighbors(Individual individual, IRandom random) {
return CompiledProblemDefinition.GetNeighbors(individual, random);
}
private readonly object locker = new object();
private volatile IProblemDefinition compiledProblemDefinition;
protected IProblemDefinition CompiledProblemDefinition {
get {
lock (locker) {
if (compiledProblemDefinition == null) {
Compile();
}
}
return compiledProblemDefinition;
}
private set {
compiledProblemDefinition = value;
OnProblemDefinitionChanged();
}
}
public override Assembly Compile() {
var assembly = base.Compile();
var types = assembly.GetTypes();
try {
var inst = (CompiledProblemDefinition)Activator.CreateInstance(types.First(x => typeof(CompiledProblemDefinition).IsAssignableFrom(x)));
inst.vars = new Variables(VariableStore);
inst.Initialize();
CompiledProblemDefinition = inst;
}
catch {
compiledProblemDefinition = null;
}
return assembly;
}
protected override void OnCodeChanged() {
base.OnCodeChanged();
compiledProblemDefinition = null;
}
public event EventHandler ProblemDefinitionChanged;
protected virtual void OnProblemDefinitionChanged() {
var handler = ProblemDefinitionChanged;
if (handler != null) handler(this, EventArgs.Empty);
}
}
}