1 | using System;
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2 | using HeuristicLab.Persistence.Core;
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3 | using HeuristicLab.Persistence.Interfaces;
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4 | using System.Collections.Generic;
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5 |
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6 | namespace HeuristicLab.Persistence.Default.Decomposers {
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7 |
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8 | public class ArrayDecomposer : IDecomposer {
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9 |
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10 | public int Priority {
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11 | get { return 100; }
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12 | }
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13 |
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14 | public bool CanDecompose(Type type) {
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15 | return type.IsArray || type == typeof(Array);
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16 | }
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17 |
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18 | public IEnumerable<Tag> DeCompose(object array) {
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19 | Array a = (Array)array;
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20 | yield return new Tag("rank", a.Rank);
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21 | int[] lengths = new int[a.Rank];
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22 | int[] lowerBounds = new int[a.Rank];
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23 | for (int i = 0; i < a.Rank; i++) {
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24 | lengths[i] = a.GetLength(i);
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25 | yield return new Tag("length_" + i, a.GetLength(i));
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26 | }
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27 | for (int i = 0; i < a.Rank; i++) {
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28 | lowerBounds[i] = a.GetLowerBound(i);
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29 | yield return new Tag("lowerBound_" + i, a.GetLowerBound(i));
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30 | }
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31 | int[] positions = (int[])lowerBounds.Clone();
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32 | while (positions[a.Rank - 1] < lengths[a.Rank - 1] + lowerBounds[a.Rank - 1]) {
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33 | yield return new Tag(a.GetValue(positions));
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34 | positions[0] += 1;
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35 | for (int i = 0; i < a.Rank - 1; i++) {
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36 | if (positions[i] >= lowerBounds[i] + lengths[i]) {
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37 | positions[i] = lowerBounds[i];
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38 | positions[i + 1] += 1;
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39 | } else {
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40 | break;
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41 | }
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42 | }
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43 | }
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44 | }
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45 |
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46 | public object CreateInstance(Type t) {
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47 | return null;
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48 | }
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49 |
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50 | public object Populate(object instance, IEnumerable<Tag> elements, Type t) {
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51 | IEnumerator<Tag> e = elements.GetEnumerator();
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52 | e.MoveNext();
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53 | int rank = (int)e.Current.Value;
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54 | int[] lengths = new int[rank];
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55 | for (int i = 0; i < rank; i++) {
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56 | e.MoveNext();
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57 | lengths[i] = (int)e.Current.Value;
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58 | }
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59 | int[] lowerBounds = new int[rank];
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60 | for (int i = 0; i < rank; i++) {
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61 | e.MoveNext();
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62 | lowerBounds[i] = (int)e.Current.Value;
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63 | }
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64 | Array a = Array.CreateInstance(t.GetElementType(), lengths, lowerBounds);
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65 | int[] positions = (int[])lowerBounds.Clone();
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66 | while (e.MoveNext()) {
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67 | int[] currentPositions = positions;
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68 | e.Current.SafeSet(value => a.SetValue(value, currentPositions));
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69 | positions[0] += 1;
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70 | for (int i = 0; i < rank-1; i++) {
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71 | if (positions[i] >= lengths[i]+lowerBounds[i]) {
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72 | positions[i] = lowerBounds[i];
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73 | positions[i + 1] += 1;
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74 | } else {
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75 | break;
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76 | }
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77 | }
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78 | }
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79 | return a;
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80 | }
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81 | }
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82 |
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83 | }
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