mcs/class/corlib/System.Reflection.Emit/FieldBuilder.cs

   1
   2
   3 //
   4 // System.Reflection.Emit/FieldBuilder.cs
   5 //
   6 // Author:
   7 //   Paolo Molaro (lupus@ximian.com)
   8 //
   9 // (C) 2001 Ximian, Inc.  http://www.ximian.com
  10 //
  11
  12 using System;
  13 using System.Reflection;
  14 using System.Reflection.Emit;
  15 using System.Globalization;
  16 using System.Runtime.CompilerServices;
  17
  18 namespace System.Reflection.Emit {
  19         public sealed class FieldBuilder : FieldInfo {
  20                 private FieldAttributes attrs;
  21                 private Type type;
  22                 private String name;
  23                 private object def_value;
  24                 private int offset;
  25                 private int table_idx;
  26                 internal TypeBuilder typeb;
  27                 private byte[] rva_data;
  28                 private CustomAttributeBuilder[] cattrs;
  29
  30                 internal FieldBuilder (TypeBuilder tb, string fieldName, Type type, FieldAttributes attributes) {
  31                         attrs = attributes;
  32                         name = fieldName;
  33                         this.type = type;
  34                         offset = -1;
  35                         typeb = tb;
  36                         table_idx = tb.get_next_table_index (0x04, true);
  37                 }
  38
  39                 public override FieldAttributes Attributes {
  40                         get {return attrs;}
  41                 }
  42                 public override Type DeclaringType {
  43                         get {return typeb;}
  44                 }
  45                 public override RuntimeFieldHandle FieldHandle {
  46                         get {return new RuntimeFieldHandle();}
  47                 }
  48                 public override Type FieldType {
  49                         get {return type;}
  50                 }
  51                 public override string Name {
  52                         get {return name;}
  53                 }
  54                 public override Type ReflectedType {
  55                         get {return typeb;}
  56                 }
  57
  58                 public override object[] GetCustomAttributes(bool inherit) {
  59                         return null;
  60                 }
  61                 public override object[] GetCustomAttributes(Type attributeType, bool inherit) {
  62                         return null;
  63                 }
  64                 public FieldToken GetToken() {
  65                         return new FieldToken (0x04000000 | table_idx);
  66                 }
  67                 public override object GetValue(object obj) {
  68                         return null;
  69                 }
  70                 public override bool IsDefined( Type attributeType, bool inherit) {
  71                         return false;
  72                 }
  73                 internal void SetRVAData (byte[] data) {
  74                         rva_data = (byte[])data.Clone ();
  75                 }
  76                 public void SetConstant( object defaultValue) {
  77                         /*if (defaultValue.GetType() != type)
  78                                 throw new ArgumentException ("Constant doesn't match field type");*/
  79                         def_value = defaultValue;
  80                 }
  81                 public void SetCustomAttribute( CustomAttributeBuilder customBuilder) {
  82                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
  83                         if (attrname == "System.Runtime.InteropServices.FieldOffsetAttribute") {
  84                                 byte[] data = customBuilder.Data;
  85                                 offset = (int)data [2];
  86                                 offset |= ((int)data [3]) << 8;
  87                                 offset |= ((int)data [4]) << 16;
  88                                 offset |= ((int)data [5]) << 24;
  89                                 return;
  90                         } else if (attrname == "System.NonSerializedAttribute") {
  91                                 attrs |= FieldAttributes.NotSerialized;
  92                                 return;
  93                         }
  94                         if (cattrs != null) {
  95                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
  96                                 cattrs.CopyTo (new_array, 0);
  97                                 new_array [cattrs.Length] = customBuilder;
  98                                 cattrs = new_array;
  99                         } else {
 100                                 cattrs = new CustomAttributeBuilder [1];
 101                                 cattrs [0] = customBuilder;
 102                         }
 103                 }
 104                 public void SetCustomAttribute( ConstructorInfo con, byte[] binaryAttribute) {
 105                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 106                 }
 107                 public void SetMarshal( UnmanagedMarshal unmanagedMarshal) {
 108                 }
 109                 public void SetOffset( int iOffset) {
 110                         offset = iOffset;
 111                 }
 112                 public override void SetValue( object obj, object val, BindingFlags invokeAttr, Binder binder, CultureInfo culture) {
 113                 }
 114
 115         }
 116 }
 117