1 | using System;
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2 | using System.Reflection;
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3 |
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4 | namespace HeuristicLab.Persistence.Core {
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5 |
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6 | public class DataMemberAccessor {
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7 |
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8 | public readonly Func<object> Get;
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9 | public readonly Action<object> Set;
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10 | public readonly string Name;
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11 | public readonly object DefaultValue;
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12 |
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13 | public DataMemberAccessor(
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14 | MemberInfo memberInfo,
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15 | StorableAttribute storableAttribute,
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16 | object obj) {
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17 | if (memberInfo.MemberType == MemberTypes.Field) {
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18 | FieldInfo fieldInfo = (FieldInfo)memberInfo;
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19 | Get = () => fieldInfo.GetValue(obj);
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20 | Set = value => fieldInfo.SetValue(obj, value);
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21 | } else if (memberInfo.MemberType == MemberTypes.Property) {
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22 | PropertyInfo propertyInfo = (PropertyInfo)memberInfo;
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23 | if (!propertyInfo.CanRead || !propertyInfo.CanWrite) {
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24 | throw new NotSupportedException(
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25 | "Storable properties must implement both a Get and a Set Accessor. ");
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26 | }
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27 | Get = () => propertyInfo.GetValue(obj, null);
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28 | Set = value => propertyInfo.SetValue(obj, value, null);
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29 | } else {
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30 | throw new NotSupportedException(
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31 | "The Storable attribute can only be applied to fields and properties.");
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32 | }
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33 | Name = storableAttribute.Name ?? memberInfo.Name;
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34 | DefaultValue = storableAttribute.DefaultValue;
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35 | }
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36 |
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37 | public DataMemberAccessor(
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38 | string name, object defaultValue,
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39 | Func<object> getter, Action<object> setter) {
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40 | Name = name;
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41 | DefaultValue = defaultValue;
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42 | Get = getter;
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43 | Set = setter;
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44 | }
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45 |
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46 | public DataMemberAccessor(object o) {
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47 | Name = null;
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48 | DefaultValue = null;
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49 | Get = () => o;
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50 | Set = null;
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51 | }
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52 |
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53 | public DataMemberAccessor(object o, string name) {
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54 | Name = name;
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55 | DefaultValue = null;
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56 | Get = () => o;
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57 | Set = null;
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58 | }
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59 |
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60 |
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61 | public override string ToString() {
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62 | return String.Format("DataMember({0}, {1}, {2}, {3})",
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63 | Name,
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64 | DefaultValue ?? "<null>",
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65 | Get.Method, Set.Method);
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66 | }
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67 | }
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68 |
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69 | } |
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