mcs/tools/cil-strip/Mono.Cecil/TableComparers.cs

   1 //
   2 // TableComparers.cs
   3 //
   4 // Author:
   5 //   Jb Evain (jbevain@gmail.com)
   6 //
   7 // (C) 2005 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 namespace Mono.Cecil {
  30
  31         using System;
  32         using System.Collections;
  33
  34         using Mono.Cecil.Metadata;
  35
  36         sealed class TableComparers {
  37
  38                 internal sealed class TypeDef : IComparer {
  39
  40                         public static readonly TypeDef Instance = new TypeDef ();
  41
  42                         public int Compare (object x, object y)
  43                         {
  44                                 TypeDefinition a = x as TypeDefinition;
  45                                 TypeDefinition b = y as TypeDefinition;
  46
  47                                 if (a == null || b == null)
  48                                         throw new ReflectionException ("TypeDefComparer can only compare TypeDefinition");
  49
  50                                 if (a.Name == Constants.ModuleType && b.Name == Constants.ModuleType)
  51                                         return 0;
  52                                 else if (a.Name == Constants.ModuleType)
  53                                         return -1;
  54                                 else if (b.Name == Constants.ModuleType)
  55                                         return 1;
  56
  57                                 return Comparer.Default.Compare (a.FullName, b.FullName);
  58                         }
  59                 }
  60
  61                 internal sealed class TypeRef : IComparer {
  62
  63                         public static readonly TypeRef Instance = new TypeRef ();
  64
  65                         public int Compare (object x, object y)
  66                         {
  67                                 TypeReference a = x as TypeReference;
  68                                 TypeReference b = y as TypeReference;
  69
  70                                 if (a == null || b == null)
  71                                         throw new ReflectionException ("TypeRefComparer can only compare TypeReference");
  72
  73                                 if (b.DeclaringType == a)
  74                                         return -1;
  75                                 else if (a.DeclaringType == b)
  76                                         return 1;
  77
  78                                 return Comparer.Default.Compare (a.FullName, b.FullName);
  79                         }
  80                 }
  81
  82                 internal sealed class NestedClass : IComparer {
  83
  84                         public static readonly NestedClass Instance = new NestedClass ();
  85
  86                         public int Compare (object x, object y)
  87                         {
  88                                 NestedClassRow a = x as NestedClassRow;
  89                                 NestedClassRow b = y as NestedClassRow;
  90
  91                                 return Comparer.Default.Compare (a.NestedClass, b.NestedClass);
  92                         }
  93                 }
  94
  95                 internal sealed class Constant : IComparer {
  96
  97                         public static readonly Constant Instance = new Constant ();
  98
  99                         public int Compare (object x, object y)
 100                         {
 101                                 ConstantRow a = x as ConstantRow;
 102                                 ConstantRow b = y as ConstantRow;
 103
 104                                 return Comparer.Default.Compare (
 105                                         Utilities.CompressMetadataToken (CodedIndex.HasConstant, a.Parent),
 106                                         Utilities.CompressMetadataToken (CodedIndex.HasConstant, b.Parent));
 107                         }
 108
 109                 }
 110
 111                 internal sealed class InterfaceImpl : IComparer {
 112
 113                         public static readonly InterfaceImpl Instance = new InterfaceImpl ();
 114
 115                         public int Compare (object x, object y)
 116                         {
 117                                 InterfaceImplRow a = x as InterfaceImplRow;
 118                                 InterfaceImplRow b = y as InterfaceImplRow;
 119
 120                                 int klass = Comparer.Default.Compare (a.Class, b.Class);
 121
 122                                 if (klass == 0)
 123                                         return Comparer.Default.Compare (
 124                                                 Utilities.CompressMetadataToken (CodedIndex.TypeDefOrRef, a.Interface),
 125                                                 Utilities.CompressMetadataToken (CodedIndex.TypeDefOrRef, b.Interface));
 126
 127                                 return klass;
 128                         }
 129                 }
 130
 131                 internal sealed class MethodSem : IComparer {
 132
 133                         public static readonly MethodSem Instance = new MethodSem ();
 134
 135                         public int Compare (object x, object y)
 136                         {
 137                                 MethodSemanticsRow a = x as MethodSemanticsRow;
 138                                 MethodSemanticsRow b = y as MethodSemanticsRow;
 139
 140                                 return Comparer.Default.Compare (
 141                                         Utilities.CompressMetadataToken (CodedIndex.HasSemantics, a.Association),
 142                                         Utilities.CompressMetadataToken (CodedIndex.HasSemantics, b.Association));
 143                         }
 144                 }
 145
 146                 internal sealed class CustomAttribute : IComparer {
 147
 148                         public static readonly CustomAttribute Instance = new CustomAttribute ();
 149
 150                         public int Compare (object x, object y)
 151                         {
 152                                 CustomAttributeRow a = x as CustomAttributeRow;
 153                                 CustomAttributeRow b = y as CustomAttributeRow;
 154
 155                                 return Comparer.Default.Compare (
 156                                         Utilities.CompressMetadataToken (CodedIndex.HasCustomAttribute, a.Parent),
 157                                         Utilities.CompressMetadataToken (CodedIndex.HasCustomAttribute, b.Parent));
 158                         }
 159                 }
 160
 161                 internal sealed class SecurityDeclaration : IComparer {
 162
 163                         public static readonly SecurityDeclaration Instance = new SecurityDeclaration ();
 164
 165                         public int Compare (object x, object y)
 166                         {
 167                                 DeclSecurityRow a = x as DeclSecurityRow;
 168                                 DeclSecurityRow b = y as DeclSecurityRow;
 169
 170                                 return Comparer.Default.Compare (
 171                                         Utilities.CompressMetadataToken (CodedIndex.HasDeclSecurity, a.Parent),
 172                                         Utilities.CompressMetadataToken (CodedIndex.HasDeclSecurity, b.Parent));
 173                         }
 174                 }
 175
 176                 internal sealed class Override : IComparer {
 177
 178                         public static readonly Override Instance = new Override ();
 179
 180                         public int Compare (object x, object y)
 181                         {
 182                                 MethodImplRow a = x as MethodImplRow;
 183                                 MethodImplRow b = y as MethodImplRow;
 184
 185                                 return Comparer.Default.Compare (a.Class, b.Class);
 186                         }
 187                 }
 188
 189                 internal sealed class PInvoke : IComparer {
 190
 191                         public static readonly PInvoke Instance = new PInvoke ();
 192
 193                         public int Compare (object x, object y)
 194                         {
 195                                 ImplMapRow a = x as ImplMapRow;
 196                                 ImplMapRow b = y as ImplMapRow;
 197
 198                                 return Comparer.Default.Compare (a.MemberForwarded.RID, b.MemberForwarded.RID);
 199                         }
 200                 }
 201
 202                 internal sealed class FieldRVA : IComparer {
 203
 204                         public static readonly FieldRVA Instance = new FieldRVA ();
 205
 206                         public int Compare (object x, object y)
 207                         {
 208                                 FieldRVARow a = x as FieldRVARow;
 209                                 FieldRVARow b = y as FieldRVARow;
 210
 211                                 return Comparer.Default.Compare (a.Field, b.Field);
 212                         }
 213                 }
 214
 215                 internal sealed class FieldLayout : IComparer {
 216
 217                         public static readonly FieldLayout Instance = new FieldLayout ();
 218
 219                         public int Compare (object x, object y)
 220                         {
 221                                 FieldLayoutRow a = x as FieldLayoutRow;
 222                                 FieldLayoutRow b = y as FieldLayoutRow;
 223
 224                                 return Comparer.Default.Compare (a.Field, b.Field);
 225                         }
 226                 }
 227
 228                 internal sealed class FieldMarshal : IComparer {
 229
 230                         public static readonly FieldMarshal Instance = new FieldMarshal ();
 231
 232                         public int Compare (object x, object y)
 233                         {
 234                                 FieldMarshalRow a = x as FieldMarshalRow;
 235                                 FieldMarshalRow b = y as FieldMarshalRow;
 236
 237                                 return Comparer.Default.Compare (
 238                                         Utilities.CompressMetadataToken (CodedIndex.HasFieldMarshal, a.Parent),
 239                                         Utilities.CompressMetadataToken (CodedIndex.HasFieldMarshal, b.Parent));
 240                         }
 241                 }
 242
 243                 internal sealed class TypeLayout : IComparer {
 244
 245                         public static readonly TypeLayout Instance = new TypeLayout ();
 246
 247                         public int Compare (object x, object y)
 248                         {
 249                                 ClassLayoutRow a = x as ClassLayoutRow;
 250                                 ClassLayoutRow b = y as ClassLayoutRow;
 251
 252                                 return Comparer.Default.Compare (a.Parent, b.Parent);
 253                         }
 254                 }
 255
 256                 internal sealed class GenericParam : IComparer {
 257
 258                         public static readonly GenericParam Instance = new GenericParam ();
 259
 260                         public int Compare (object x, object y)
 261                         {
 262                                 GenericParameter a = x as GenericParameter;
 263                                 GenericParameter b = y as GenericParameter;
 264
 265                                 int token = Comparer.Default.Compare (
 266                                         Utilities.CompressMetadataToken (CodedIndex.TypeOrMethodDef, a.Owner.MetadataToken),
 267                                         Utilities.CompressMetadataToken (CodedIndex.TypeOrMethodDef, b.Owner.MetadataToken));
 268
 269                                 if (token == 0)
 270                                         return Comparer.Default.Compare (a.Position, b.Position);
 271
 272                                 return token;
 273                         }
 274                 }
 275         }
 276 }