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1 using System;
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2
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3 namespace BLToolkit.TypeBuilder
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4 {
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5 [AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Interface | AttributeTargets.Constructor | AttributeTargets.Method | AttributeTargets.Property, AllowMultiple = true)]
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6 public class GenerateAttributeAttribute: Builders.AbstractTypeBuilderAttribute
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7 {
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8 public GenerateAttributeAttribute(Type attributeType)
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9 {
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10 _attributeType = attributeType;
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11 }
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12
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13 public GenerateAttributeAttribute(Type attributeType, params object[] arguments)
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14 {
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15 _attributeType = attributeType;
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16 _arguments = arguments;
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17 }
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18
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19 private readonly Type _attributeType;
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20 public Type AttributeType
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21 {
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22 get { return _attributeType; }
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23 }
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24
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25 private readonly object[] _arguments;
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26 public object[] Arguments
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27 {
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28 get { return _arguments; }
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29 }
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30
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31 private string[] _namedArgumentNames;
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32 public string[] NamedArgumentNames
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33 {
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34 get { return _namedArgumentNames; }
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35 set { _namedArgumentNames = value; }
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36 }
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37
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38 private object[] _namedArgumentValues;
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39 public object[] NamedArgumentValues
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40 {
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41 get { return _namedArgumentValues; }
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42 set { _namedArgumentValues = value; }
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43 }
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44
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45 public object this[string name]
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46 {
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47 get
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48 {
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49 if (_namedArgumentNames == null)
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50 return null;
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51
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52 int idx = Array.IndexOf(_namedArgumentNames, name);
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53
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54 return idx < 0? null: _namedArgumentValues[idx];
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55 }
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56 set
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57 {
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58 if (_namedArgumentNames == null)
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59 {
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60 _namedArgumentNames = new string[]{ name };
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61 _namedArgumentValues = new object[]{ value };
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62 return;
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63 }
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64
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65 int idx = Array.IndexOf(_namedArgumentNames, name);
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66 if (idx < 0)
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67 {
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68 idx = _namedArgumentNames.Length;
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69
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70 Array.Resize(ref _namedArgumentNames, idx + 1);
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71 Array.Resize(ref _namedArgumentValues, idx + 1);
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72
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73 _namedArgumentNames [idx] = name;
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74 _namedArgumentValues[idx] = value;
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75 }
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76 else
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77 {
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78 _namedArgumentValues[idx] = value;
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79 }
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80 }
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81 }
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82
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83 public T GetValue<T>(string name)
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84 {
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85 object value = this[name];
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86 return value == null? default(T): (T)value;
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87 }
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88
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89 public T GetValue<T>(string name, T defaultValue)
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90 {
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91 return _namedArgumentNames == null || Array.IndexOf(_namedArgumentNames, name) < 0?
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92 defaultValue : GetValue<T>(name);
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93 }
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94
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95 public void SetValue<T>(string name, T value)
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96 {
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97 this[name] = value;
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98 }
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99
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100 public override Builders.IAbstractTypeBuilder TypeBuilder
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101 {
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102 get
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103 {
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104 return new Builders.GeneratedAttributeBuilder(
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105 _attributeType, _arguments, _namedArgumentNames, _namedArgumentValues);
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106 }
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107 }
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108 }
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109 } |
