tools/tuner/Mono.Tuner/RemoveSerialization.cs

   1 //
   2 // RemoveSerialization.cs
   3 //
   4 // Author:
   5 //   Jb Evain (jbevain@novell.com)
   6 //
   7 // (C) 2007 Novell, Inc.
   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 System;
  30 using System.Collections;
  31
  32 using Mono.Linker;
  33 using Mono.Linker.Steps;
  34
  35 using Mono.Cecil;
  36
  37 namespace Mono.Tuner {
  38
  39         public class RemoveSerialization : BaseStep {
  40
  41                 static readonly string _Serialization = "System.Runtime.Serialization";
  42                 static readonly string _ISerializable = Concat (_Serialization, "ISerializable");
  43                 static readonly string _IDeserializationCallback = Concat (_Serialization, "IDeserializationCallback");
  44                 static readonly string _SerializationInfo = Concat (_Serialization, "SerializationInfo");
  45                 static readonly string _StreamingContext = Concat (_Serialization, "StreamingContext");
  46
  47                 static readonly string _GetObjectData = "GetObjectData";
  48                 static readonly string _OnDeserialization = "OnDeserialization";
  49
  50                 static string Concat (string lhs, string rhs)
  51                 {
  52                         return string.Concat (lhs, ".", rhs);
  53                 }
  54
  55                 protected override void ProcessAssembly (AssemblyDefinition assembly)
  56                 {
  57                         if (assembly.Name.Name == Constants.Corlib)
  58                                 return;
  59
  60                         if (Annotations.GetAction (assembly) != AssemblyAction.Link)
  61                                 return;
  62
  63                         foreach (ModuleDefinition module in assembly.Modules)
  64                                 foreach (TypeDefinition type in module.Types)
  65                                         ProcessType (type);
  66                 }
  67
  68                 static void RemoveInterface (TypeDefinition type, string name)
  69                 {
  70                         for (int i = 0; i < type.Interfaces.Count; i++) {
  71                                 TypeReference iface = type.Interfaces [i];
  72                                 if (iface.FullName == name) {
  73                                         type.Interfaces.RemoveAt (i);
  74                                         return;
  75                                 }
  76                         }
  77                 }
  78
  79                 static void RemoveSerializableFlag (TypeDefinition type)
  80                 {
  81                         type.Attributes &= ~TypeAttributes.Serializable;
  82                 }
  83
  84                 static void ProcessType (TypeDefinition type)
  85                 {
  86                         RemoveSerializableFlag (type);
  87
  88                         RemoveInterface (type, _ISerializable);
  89                         RemoveConstructor (type, _SerializationInfo, _StreamingContext);
  90                         RemoveInterfaceMethod (type, _ISerializable, _GetObjectData, _SerializationInfo, _StreamingContext);
  91
  92                         RemoveInterface (type, _IDeserializationCallback);
  93                         RemoveInterfaceMethod (type, _IDeserializationCallback, _OnDeserialization, Constants.Object);
  94
  95                         RemoveField (type);
  96                 }
  97
  98                 static void RemoveField (TypeDefinition type)
  99                 {
 100                         for (int i = 0; i < type.Fields.Count; i++) {
 101                                 FieldDefinition field = type.Fields [i];
 102                                 if (field.FieldType.FullName == _SerializationInfo) {
 103                                         type.Fields.RemoveAt (i);
 104                                         break;
 105                                 }
 106                         }
 107                 }
 108
 109                 static bool ParametersMatch (IMethodSignature meth, string [] parameters)
 110                 {
 111                         for (int i = 0; i < parameters.Length; i++) {
 112                                 ParameterDefinition param = meth.Parameters [i];
 113                                 if (param.ParameterType.FullName != parameters [i])
 114                                         return false;
 115                         }
 116
 117                         return true;
 118                 }
 119
 120                 static void RemoveInterfaceMethod (TypeDefinition type, string iface, string method, params string [] parameters)
 121                 {
 122                         RemoveMethod (type, method, parameters);
 123                         RemoveMethod (type, Concat (iface, method), parameters);
 124                 }
 125
 126                 static void RemoveMethod (TypeDefinition type, string name, params string [] parameters)
 127                 {
 128                         RemoveMethod (type.Methods, name, parameters);
 129                 }
 130
 131                 static void RemoveConstructor (TypeDefinition type, params string [] parameters)
 132                 {
 133                         RemoveMethod (type.Constructors, MethodDefinition.Ctor, parameters);
 134                 }
 135
 136                 static void RemoveMethod (IList container, string name, params string [] parameters)
 137                 {
 138                         for (int i = 0; i < container.Count; i++) {
 139                                 MethodDefinition method = (MethodDefinition) container [i];
 140                                 if (method.Name != name)
 141                                         continue;
 142
 143                                 if (method.Parameters.Count != parameters.Length)
 144                                         continue;
 145
 146                                 if (!ParametersMatch (method, parameters))
 147                                         continue;
 148
 149                                 container.RemoveAt (i);
 150                                 return;
 151                         }
 152                 }
 153         }
 154 }