src/Boo.Lang.Compiler/TypeSystem/ExternalEvent.cs

   1 #region license
   2 // Copyright (c) 2004, Rodrigo B. de Oliveira (rbo@acm.org)
   3 // All rights reserved.
   4 //
   5 // Redistribution and use in source and binary forms, with or without modification,
   6 // are permitted provided that the following conditions are met:
   7 //
   8 //     * Redistributions of source code must retain the above copyright notice,
   9 //     this list of conditions and the following disclaimer.
  10 //     * Redistributions in binary form must reproduce the above copyright notice,
  11 //     this list of conditions and the following disclaimer in the documentation
  12 //     and/or other materials provided with the distribution.
  13 //     * Neither the name of Rodrigo B. de Oliveira nor the names of its
  14 //     contributors may be used to endorse or promote products derived from this
  15 //     software without specific prior written permission.
  16 //
  17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  18 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  20 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
  21 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  23 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  24 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  25 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26 // THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27 #endregion
  28
  29 namespace Boo.Lang.Compiler.TypeSystem
  30 {
  31         public class ExternalEvent : ExternalEntity<System.Reflection.EventInfo>, IEvent
  32         {
  33             private IMethod _add;
  34
  35             private IMethod _remove;
  36
  37                 public ExternalEvent(TypeSystemServices typeSystemServices, System.Reflection.EventInfo event_) : base(typeSystemServices, event_)
  38                 {
  39                 }
  40
  41                 public virtual IType DeclaringType
  42                 {
  43                         get { return _typeSystemServices.Map(_memberInfo.DeclaringType); }
  44                 }
  45
  46                 public virtual IMethod GetAddMethod()
  47                 {
  48             if (null != _add) return _add;
  49                         return _add = FindAddMethod();
  50                 }
  51
  52             private IMethod FindAddMethod()
  53             {
  54                 return _typeSystemServices.Map(_memberInfo.GetAddMethod(true));
  55             }
  56
  57             public virtual IMethod GetRemoveMethod()
  58                 {
  59             if (null != _remove) return _remove;
  60                         return _remove = FindRemoveMethod();
  61                 }
  62
  63             private IMethod FindRemoveMethod()
  64             {
  65                 return _typeSystemServices.Map(_memberInfo.GetRemoveMethod(true));
  66             }
  67
  68             public virtual IMethod GetRaiseMethod()
  69                 {
  70                         return _typeSystemServices.Map(_memberInfo.GetRaiseMethod(true));
  71                 }
  72
  73                 public System.Reflection.EventInfo EventInfo
  74                 {
  75                         get { return _memberInfo; }
  76                 }
  77
  78                 public bool IsPublic
  79                 {
  80                         get { return GetAddMethod().IsPublic; }
  81                 }
  82
  83                 override public EntityType EntityType
  84                 {
  85                         get { return EntityType.Event; }
  86                 }
  87
  88                 public virtual IType Type
  89                 {
  90                         get
  91                         {
  92                                 return _typeSystemServices.Map(_memberInfo.EventHandlerType);
  93                         }
  94                 }
  95
  96                 public bool IsStatic
  97                 {
  98                         get
  99                         {
 100                                 return GetAddMethod().IsStatic;
 101                         }
 102                 }
 103
 104                 public bool IsAbstract
 105                 {
 106                         get
 107                         {
 108                                 return GetAddMethod().IsAbstract;
 109
 110                         }
 111                 }
 112
 113                 public bool IsVirtual
 114                 {
 115                         get
 116                         {
 117                                 return GetAddMethod().IsVirtual;
 118                         }
 119                 }
 120
 121                 override protected System.Type MemberType
 122                 {
 123                         get { return _memberInfo.EventHandlerType;  }
 124                 }
 125         }
 126 }