mcs/class/Mono.Cecil/Mono.Cecil/EventDefinition.cs

   1 //
   2 // EventDefinition.cs
   3 //
   4 // Author:
   5 //   Jb Evain (jbevain@gmail.com)
   6 //
   7 // Copyright (c) 2008 - 2010 Jb Evain
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using Mono.Collections.Generic;
  30
  31 namespace Mono.Cecil {
  32
  33         public sealed class EventDefinition : EventReference, IMemberDefinition {
  34
  35                 ushort attributes;
  36
  37                 Collection<CustomAttribute> custom_attributes;
  38
  39                 internal MethodDefinition add_method;
  40                 internal MethodDefinition invoke_method;
  41                 internal MethodDefinition remove_method;
  42                 internal Collection<MethodDefinition> other_methods;
  43
  44                 public EventAttributes Attributes {
  45                         get { return (EventAttributes) attributes; }
  46                         set { attributes = (ushort) value; }
  47                 }
  48
  49                 public MethodDefinition AddMethod {
  50                         get {
  51                                 if (add_method != null)
  52                                         return add_method;
  53
  54                                 InitializeMethods ();
  55                                 return add_method;
  56                         }
  57                         set { add_method = value; }
  58                 }
  59
  60                 public MethodDefinition InvokeMethod {
  61                         get {
  62                                 if (invoke_method != null)
  63                                         return invoke_method;
  64
  65                                 InitializeMethods ();
  66                                 return invoke_method;
  67                         }
  68                         set { invoke_method = value; }
  69                 }
  70
  71                 public MethodDefinition RemoveMethod {
  72                         get {
  73                                 if (remove_method != null)
  74                                         return remove_method;
  75
  76                                 InitializeMethods ();
  77                                 return remove_method;
  78                         }
  79                         set { remove_method = value; }
  80                 }
  81
  82                 public bool HasOtherMethods {
  83                         get {
  84                                 if (other_methods != null)
  85                                         return other_methods.Count > 0;
  86
  87                                 InitializeMethods ();
  88                                 return !other_methods.IsNullOrEmpty ();
  89                         }
  90                 }
  91
  92                 public Collection<MethodDefinition> OtherMethods {
  93                         get {
  94                                 if (other_methods != null)
  95                                         return other_methods;
  96
  97                                 InitializeMethods ();
  98
  99                                 if (other_methods != null)
 100                                         return other_methods;
 101
 102                                 return other_methods = new Collection<MethodDefinition> ();
 103                         }
 104                 }
 105
 106                 public bool HasCustomAttributes {
 107                         get {
 108                                 if (custom_attributes != null)
 109                                         return custom_attributes.Count > 0;
 110
 111                                 return this.GetHasCustomAttributes (Module);
 112                         }
 113                 }
 114
 115                 public Collection<CustomAttribute> CustomAttributes {
 116                         get { return custom_attributes ?? (custom_attributes = this.GetCustomAttributes (Module)); }
 117                 }
 118
 119                 #region EventAttributes
 120
 121                 public bool IsSpecialName {
 122                         get { return attributes.GetAttributes ((ushort) EventAttributes.SpecialName); }
 123                         set { attributes = attributes.SetAttributes ((ushort) EventAttributes.SpecialName, value); }
 124                 }
 125
 126                 public bool IsRuntimeSpecialName {
 127                         get { return attributes.GetAttributes ((ushort) FieldAttributes.RTSpecialName); }
 128                         set { attributes = attributes.SetAttributes ((ushort) FieldAttributes.RTSpecialName, value); }
 129                 }
 130
 131                 #endregion
 132
 133                 public new TypeDefinition DeclaringType {
 134                         get { return (TypeDefinition) base.DeclaringType; }
 135                         set { base.DeclaringType = value; }
 136                 }
 137
 138                 public override bool IsDefinition {
 139                         get { return true; }
 140                 }
 141
 142                 public EventDefinition (string name, EventAttributes attributes, TypeReference eventType)
 143                         : base (name, eventType)
 144                 {
 145                         this.attributes = (ushort) attributes;
 146                         this.token = new MetadataToken (TokenType.Event);
 147                 }
 148
 149                 void InitializeMethods ()
 150                 {
 151                         if (add_method != null
 152                                 || invoke_method != null
 153                                 || remove_method != null)
 154                                 return;
 155
 156                         var module = this.Module;
 157                         if (!module.HasImage ())
 158                                 return;
 159
 160                         module.Read (this, (@event, reader) => reader.ReadMethods (@event));
 161                 }
 162         }
 163 }