mcs/class/corlib/System.Runtime.Serialization/FormatterServices.cs

   1 //
   2 // System.Runtime.Serialization.FormatterServices
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // (C) 2002 Ximian, Inc (http://www.ximian.com)
   8 //
   9 using System;
  10 using System.Collections;
  11 using System.Reflection;
  12
  13 namespace System.Runtime.Serialization
  14 {
  15         public sealed class FormatterServices
  16         {
  17                 private const BindingFlags fieldFlags = BindingFlags.Public |
  18                                                         BindingFlags.Instance |
  19                                                         BindingFlags.NonPublic |
  20                                                         BindingFlags.DeclaredOnly;
  21
  22                 private FormatterServices ()
  23                 {
  24                 }
  25
  26                 public static object [] GetObjectData (object obj, MemberInfo [] members)
  27                 {
  28                         if (obj == null)
  29                                 throw new ArgumentNullException ("obj");
  30
  31                         if (members == null)
  32                                 throw new ArgumentNullException ("members");
  33
  34                         int n = members.Length;
  35                         object [] result = new object [n];
  36                         for (int i = 0; i < n; i++) {
  37                                 MemberInfo member = members [i];
  38                                 if (member == null)
  39                                         throw new ArgumentNullException (String.Format ("members[{0}]", i));
  40
  41                                 if (member.MemberType != MemberTypes.Field)
  42                                         throw new SerializationException (
  43                                                         String.Format ("members [{0}] is not a field.", i));
  44
  45                                 FieldInfo fi = member as FieldInfo; //FIXME: Can fi be null?
  46                                 result [i] = fi.GetValue (obj);
  47                         }
  48
  49                         return result;
  50                 }
  51
  52                 public static MemberInfo [] GetSerializableMembers (Type type)
  53                 {
  54                         StreamingContext st = new StreamingContext (StreamingContextStates.All);
  55                         return GetSerializableMembers (type, st);
  56                 }
  57
  58                 public static MemberInfo [] GetSerializableMembers (Type type, StreamingContext context)
  59                 {
  60                         if (type == null)
  61                                 throw new ArgumentNullException ("type");
  62
  63                         //FIXME: context?
  64                         ArrayList fields = new ArrayList ();
  65                         Type t = type;
  66                         while (t != null) {
  67                                 GetFields (t, fields);
  68                                 t = t.BaseType;
  69                         }
  70
  71                         MemberInfo [] result = new MemberInfo [fields.Count];
  72                         fields.CopyTo (result);
  73                         return result;
  74                 }
  75
  76                 private static void GetFields (Type type, ArrayList fields)
  77                 {
  78                         FieldInfo [] fs = type.GetFields (fieldFlags);
  79                         foreach (FieldInfo field in fs)
  80                                 if (!(field.IsNotSerialized))
  81                                         fields.Add (field);
  82                 }
  83
  84                 public static Type GetTypeFromAssembly (Assembly assem, string name)
  85                 {
  86                         if (assem == null)
  87                                 throw new ArgumentNullException ("assem");
  88
  89                         if (name == null)
  90                                 throw new ArgumentNullException ("name");
  91
  92                         return assem.GetType (name);
  93                 }
  94
  95                 [MonoTODO]
  96                 public static object GetUninitializedObject (Type type)
  97                 {
  98                         throw new NotImplementedException ();
  99                 }
 100
 101                 public static object PopulateObjectMembers (object obj, MemberInfo [] members, object [] data)
 102                 {
 103                         if (obj == null)
 104                                 throw new ArgumentNullException ("obj");
 105
 106                         if (members == null)
 107                                 throw new ArgumentNullException ("members");
 108
 109                         if (data == null)
 110                                 throw new ArgumentNullException ("data");
 111
 112                         int length = members.Length;
 113                         if (length != data.Length)
 114                                 throw new ArgumentException ("different length in members and data");
 115
 116                         for (int i = 0; i < length; i++) {
 117                                 MemberInfo member = members [i];
 118                                 if (member == null)
 119                                         throw new ArgumentNullException (String.Format ("members[{0}]", i));
 120
 121                                 if (member.MemberType != MemberTypes.Field)
 122                                         throw new SerializationException (
 123                                                         String.Format ("members [{0}] is not a field.", i));
 124
 125                                 FieldInfo fi = member as FieldInfo; //FIXME: can fi be null?
 126                                 fi.SetValue (obj, data [i]);
 127                         }
 128
 129                         return obj;
 130                 }
 131         }
 132 }
 133