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comparison Source/Reflection/GenericBinder.cs @ 0:f990fcb411a9

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Копия текущей версии из github
author cin
date Thu, 27 Mar 2014 21:46:09 +0400
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-1:000000000000 0:f990fcb411a9
1 using System;
2 using System.Globalization;
3 using System.Reflection;
4
5 namespace BLToolkit.Reflection
6 {
7 /// <Summary>
8 /// Selects a member from a list of candidates, and performs type conversion
9 /// from actual argument type to formal argument type.
10 /// </Summary>
11 [Serializable]
12 public class GenericBinder : Binder
13 {
14 private readonly bool _genericMethodDefinition;
15 public GenericBinder(bool genericMethodDefinition)
16 {
17 _genericMethodDefinition = genericMethodDefinition;
18 }
19
20 #region System.Reflection.Binder methods
21
22 public override MethodBase BindToMethod(BindingFlags bindingAttr, MethodBase[] match, ref object[] args,
23 ParameterModifier[] modifiers, CultureInfo culture, string[] names, out object state)
24 {
25 throw new InvalidOperationException("GenericBinder.BindToMethod");
26 }
27
28 public override FieldInfo BindToField(BindingFlags bindingAttr, FieldInfo[] match, object value, CultureInfo culture)
29 {
30 throw new InvalidOperationException("GenericBinder.BindToField");
31 }
32
33 public override MethodBase SelectMethod(
34 BindingFlags bindingAttr,
35 MethodBase[] matchMethods,
36 Type[] parameterTypes,
37 ParameterModifier[] modifiers)
38 {
39 for (int i = 0; i < matchMethods.Length; ++i)
40 {
41 if (matchMethods[i].IsGenericMethodDefinition != _genericMethodDefinition)
42 continue;
43
44 ParameterInfo[] pis = matchMethods[i].GetParameters();
45 bool match = (pis.Length == parameterTypes.Length);
46
47 for (int j = 0; match && j < pis.Length; ++j)
48 {
49 match = TypeHelper.CompareParameterTypes(pis[j].ParameterType, parameterTypes[j]);
50 }
51
52 if (match)
53 return matchMethods[i];
54 }
55
56 return null;
57 }
58
59 public override PropertyInfo SelectProperty(BindingFlags bindingAttr, PropertyInfo[] match, Type returnType,
60 Type[] indexes, ParameterModifier[] modifiers)
61 {
62 throw new InvalidOperationException("GenericBinder.SelectProperty");
63 }
64
65 public override object ChangeType(object value, Type type, CultureInfo culture)
66 {
67 throw new InvalidOperationException("GenericBinder.ChangeType");
68 }
69
70 public override void ReorderArgumentArray(ref object[] args, object state)
71 {
72 throw new InvalidOperationException("GenericBinder.ReorderArgumentArray");
73 }
74
75 #endregion
76
77 private static GenericBinder _generic;
78 public static GenericBinder Generic
79 {
80 get { return _generic ?? (_generic = new GenericBinder(true)); }
81 }
82
83 private static GenericBinder _nonGeneric;
84 public static GenericBinder NonGeneric
85 {
86 get { return _nonGeneric ?? (_nonGeneric = new GenericBinder(false)); }
87 }
88 }
89 }