source: stable/HeuristicLab.Problems.ExternalEvaluation/3.4/Programmable/OptimizationSupportScript.cs @ 14186

Last change on this file since 14186 was 14186, checked in by swagner, 3 years ago

#2526: Updated year of copyrights in license headers

File size: 3.9 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Linq;
24using System.Reflection;
25using HeuristicLab.Common;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27using HeuristicLab.Scripting;
28
29namespace HeuristicLab.Problems.ExternalEvaluation {
30  [StorableClass]
31  public abstract class OptimizationSupportScript<T> : Script
32    where T : class {
33
34    [Storable]
35    private VariableStore variableStore;
36    public VariableStore VariableStore {
37      get { return variableStore; }
38    }
39
40    [StorableConstructor]
41    protected OptimizationSupportScript(bool deserializing) : base(deserializing) { }
42    protected OptimizationSupportScript(OptimizationSupportScript<T> original, Cloner cloner)
43      : base(original, cloner) {
44      variableStore = cloner.Clone(original.variableStore);
45    }
46
47    protected OptimizationSupportScript()
48      : base() {
49      variableStore = new VariableStore();
50    }
51
52    protected OptimizationSupportScript(string code)
53      : base(code) {
54      variableStore = new VariableStore();
55    }
56
57    private readonly object compileLock = new object();
58    private T compiledInstance;
59    protected T CompiledInstance {
60      get {
61        if (compiledInstance == null) {
62          lock (compileLock) {
63            if (compiledInstance == null) {
64              Compile();
65            }
66          }
67        }
68        return compiledInstance;
69      }
70      private set { compiledInstance = value; }
71    }
72
73    public override Assembly Compile() {
74      var assembly = base.Compile();
75      var types = assembly.GetTypes();
76      if (!types.Any(x => typeof(CompiledOptimizationSupport).IsAssignableFrom(x)))
77        throw new OptimizationSupportException("The compiled code doesn't contain an optimization support." + Environment.NewLine + "The support class must be a subclass of CompiledOptimizationSupport.");
78      if (types.Count(x => typeof(CompiledOptimizationSupport).IsAssignableFrom(x)) > 1)
79        throw new OptimizationSupportException("The compiled code contains multiple support classes." + Environment.NewLine + "Only one subclass of CompiledOptimizationSupport is allowed.");
80
81      CompiledOptimizationSupport inst;
82      try {
83        inst = (CompiledOptimizationSupport)Activator.CreateInstance(types.Single(x => typeof(CompiledOptimizationSupport).IsAssignableFrom(x)));
84        inst.vars = new Variables(VariableStore);
85      } catch (Exception e) {
86        compiledInstance = null;
87        throw new OptimizationSupportException("Instantiating the optimization support class failed." + Environment.NewLine + "Check your default constructor.", e);
88      }
89
90      var concreteInst = inst as T;
91      if (concreteInst == null)
92        throw new OptimizationSupportException("The optimization support class does not implement ISingleObjectiveOptimizationSupport." + Environment.NewLine + "Please implement that interface in the subclass of CompiledOptimizationSupport.");
93
94      CompiledInstance = concreteInst;
95
96      return assembly;
97    }
98
99    protected override void OnCodeChanged() {
100      base.OnCodeChanged();
101      compiledInstance = null;
102    }
103  }
104}
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