mcs/class/IKVM.Reflection/Reader/PropertyInfoImpl.cs

   1 /*
   2   Copyright (C) 2009-2012 Jeroen Frijters
   3
   4   This software is provided 'as-is', without any express or implied
   5   warranty.  In no event will the authors be held liable for any damages
   6   arising from the use of this software.
   7
   8   Permission is granted to anyone to use this software for any purpose,
   9   including commercial applications, and to alter it and redistribute it
  10   freely, subject to the following restrictions:
  11
  12   1. The origin of this software must not be misrepresented; you must not
  13      claim that you wrote the original software. If you use this software
  14      in a product, an acknowledgment in the product documentation would be
  15      appreciated but is not required.
  16   2. Altered source versions must be plainly marked as such, and must not be
  17      misrepresented as being the original software.
  18   3. This notice may not be removed or altered from any source distribution.
  19
  20   Jeroen Frijters
  21   jeroen@frijters.net
  22
  23 */
  24 using System;
  25 using System.Collections.Generic;
  26 using System.Text;
  27 using IKVM.Reflection.Metadata;
  28
  29 namespace IKVM.Reflection.Reader
  30 {
  31         sealed class PropertyInfoImpl : PropertyInfo
  32         {
  33                 private readonly ModuleReader module;
  34                 private readonly Type declaringType;
  35                 private readonly int index;
  36                 private PropertySignature sig;
  37                 private bool isPublic;
  38                 private bool isNonPrivate;
  39                 private bool isStatic;
  40                 private bool flagsCached;
  41
  42                 internal PropertyInfoImpl(ModuleReader module, Type declaringType, int index)
  43                 {
  44                         this.module = module;
  45                         this.declaringType = declaringType;
  46                         this.index = index;
  47                 }
  48
  49                 public override bool Equals(object obj)
  50                 {
  51                         PropertyInfoImpl other = obj as PropertyInfoImpl;
  52                         return other != null && other.DeclaringType == declaringType && other.index == index;
  53                 }
  54
  55                 public override int GetHashCode()
  56                 {
  57                         return declaringType.GetHashCode() * 77 + index;
  58                 }
  59
  60                 internal override PropertySignature PropertySignature
  61                 {
  62                         get
  63                         {
  64                                 if (sig == null)
  65                                 {
  66                                         sig = PropertySignature.ReadSig(module, module.GetBlob(module.Property.records[index].Type), declaringType);
  67                                 }
  68                                 return sig;
  69                         }
  70                 }
  71
  72                 public override PropertyAttributes Attributes
  73                 {
  74                         get { return (PropertyAttributes)module.Property.records[index].Flags; }
  75                 }
  76
  77                 public override object GetRawConstantValue()
  78                 {
  79                         return module.Constant.GetRawConstantValue(module, this.MetadataToken);
  80                 }
  81
  82                 public override bool CanRead
  83                 {
  84                         get { return GetGetMethod(true) != null; }
  85                 }
  86
  87                 public override bool CanWrite
  88                 {
  89                         get { return GetSetMethod(true) != null; }
  90                 }
  91
  92                 public override MethodInfo GetGetMethod(bool nonPublic)
  93                 {
  94                         return module.MethodSemantics.GetMethod(module, this.MetadataToken, nonPublic, MethodSemanticsTable.Getter);
  95                 }
  96
  97                 public override MethodInfo GetSetMethod(bool nonPublic)
  98                 {
  99                         return module.MethodSemantics.GetMethod(module, this.MetadataToken, nonPublic, MethodSemanticsTable.Setter);
 100                 }
 101
 102                 public override MethodInfo[] GetAccessors(bool nonPublic)
 103                 {
 104                         return module.MethodSemantics.GetMethods(module, this.MetadataToken, nonPublic, MethodSemanticsTable.Getter | MethodSemanticsTable.Setter | MethodSemanticsTable.Other);
 105                 }
 106
 107                 public override Type DeclaringType
 108                 {
 109                         get { return declaringType; }
 110                 }
 111
 112                 public override Module Module
 113                 {
 114                         get { return module; }
 115                 }
 116
 117                 public override int MetadataToken
 118                 {
 119                         get { return (PropertyTable.Index << 24) + index + 1; }
 120                 }
 121
 122                 public override string Name
 123                 {
 124                         get { return module.GetString(module.Property.records[index].Name); }
 125                 }
 126
 127                 internal override bool IsPublic
 128                 {
 129                         get
 130                         {
 131                                 if (!flagsCached)
 132                                 {
 133                                         ComputeFlags();
 134                                 }
 135                                 return isPublic;
 136                         }
 137                 }
 138
 139                 internal override bool IsNonPrivate
 140                 {
 141                         get
 142                         {
 143                                 if (!flagsCached)
 144                                 {
 145                                         ComputeFlags();
 146                                 }
 147                                 return isNonPrivate;
 148                         }
 149                 }
 150
 151                 internal override bool IsStatic
 152                 {
 153                         get
 154                         {
 155                                 if (!flagsCached)
 156                                 {
 157                                         ComputeFlags();
 158                                 }
 159                                 return isStatic;
 160                         }
 161                 }
 162
 163                 private void ComputeFlags()
 164                 {
 165                         module.MethodSemantics.ComputeFlags(module, this.MetadataToken, out isPublic, out isNonPrivate, out isStatic);
 166                         flagsCached = true;
 167                 }
 168
 169                 internal override bool IsBaked
 170                 {
 171                         get { return true; }
 172                 }
 173
 174                 internal override int GetCurrentToken()
 175                 {
 176                         return this.MetadataToken;
 177                 }
 178         }
 179 }