mcs/class/corlib/System.Reflection.Emit/SignatureHelper.cs

   1
   2 //
   3 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
   4 //
   5 // Permission is hereby granted, free of charge, to any person obtaining
   6 // a copy of this software and associated documentation files (the
   7 // "Software"), to deal in the Software without restriction, including
   8 // without limitation the rights to use, copy, modify, merge, publish,
   9 // distribute, sublicense, and/or sell copies of the Software, and to
  10 // permit persons to whom the Software is furnished to do so, subject to
  11 // the following conditions:
  12 //
  13 // The above copyright notice and this permission notice shall be
  14 // included in all copies or substantial portions of the Software.
  15 //
  16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  20 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  21 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  22 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23 //
  24
  25 //
  26 // System.Reflection.Emit/SignatureHelper.cs
  27 //
  28 // Author:
  29 //   Paolo Molaro (lupus@ximian.com)
  30 //
  31 // (C) 2001 Ximian, Inc.  http://www.ximian.com
  32 //
  33
  34 using System;
  35 using System.Reflection;
  36 using System.Reflection.Emit;
  37 using System.Globalization;
  38 using System.Runtime.CompilerServices;
  39 using System.Runtime.InteropServices;
  40
  41 namespace System.Reflection.Emit {
  42 #if NET_2_0
  43         [ComVisible (true)]
  44         [ClassInterfaceAttribute (ClassInterfaceType.None)]
  45         [ComDefaultInterfaceAttribute (typeof (_SignatureHelper))]
  46 #endif
  47         public sealed class SignatureHelper {
  48                 internal enum SignatureHelperType {
  49                         HELPER_FIELD,
  50                         HELPER_LOCAL,
  51                         HELPER_METHOD,
  52                         HELPER_PROPERTY
  53                 }
  54
  55                 private ModuleBuilder module;
  56                 private Type[] arguments;
  57                 private SignatureHelperType type;
  58                 private Type returnType;
  59                 private CallingConventions callConv;
  60                 private CallingConvention unmanagedCallConv;
  61
  62                 internal SignatureHelper (ModuleBuilder module, SignatureHelperType type)
  63                 {
  64                         this.type = type;
  65                         this.module = module;
  66                 }
  67
  68                 public static SignatureHelper GetFieldSigHelper (Module mod)
  69                 {
  70                         if (!(mod is ModuleBuilder))
  71                                 throw new NotImplementedException ();
  72
  73                         return new SignatureHelper ((ModuleBuilder) mod, SignatureHelperType.HELPER_FIELD);
  74                 }
  75
  76                 public static SignatureHelper GetLocalVarSigHelper (Module mod)
  77                 {
  78                         if (!(mod is ModuleBuilder))
  79                                 throw new NotImplementedException ();
  80
  81                         return new SignatureHelper ((ModuleBuilder) mod, SignatureHelperType.HELPER_LOCAL);
  82                 }
  83
  84                 public static SignatureHelper GetMethodSigHelper( Module mod, CallingConventions callingConvention, Type returnType)
  85                 {
  86                         return GetMethodSigHelper (mod, callingConvention, (CallingConvention)0, returnType, null);
  87                 }
  88
  89                 public static SignatureHelper GetMethodSigHelper( Module mod, CallingConvention unmanagedCallingConvention, Type returnType)
  90                 {
  91                         return GetMethodSigHelper (mod, CallingConventions.Standard, unmanagedCallingConvention, returnType, null);
  92                 }
  93
  94                 public static SignatureHelper GetMethodSigHelper( Module mod, Type returnType, Type[] parameterTypes)
  95                 {
  96                         return GetMethodSigHelper (mod, CallingConventions.Standard,
  97                                                                            (CallingConvention)0, returnType,
  98                                                                            parameterTypes);
  99                 }
 100                 [MonoTODO]
 101                 public static SignatureHelper GetPropertySigHelper( Module mod, Type returnType, Type[] parameterTypes)
 102                 {
 103                         throw new NotImplementedException ();
 104                 }
 105
 106                 public void AddArgument (Type clsArgument)
 107                 {
 108                         if (arguments != null) {
 109                                 Type[] new_a = new Type [arguments.Length + 1];
 110                                 System.Array.Copy (arguments, new_a, arguments.Length);
 111                                 new_a [arguments.Length] = clsArgument;
 112                                 arguments = new_a;
 113                         } else {
 114                                 arguments = new Type [1];
 115                                 arguments [0] = clsArgument;
 116                         }
 117                 }
 118                 [MonoTODO]
 119                 public void AddSentinel ()
 120                 {
 121                         throw new NotImplementedException ();
 122                 }
 123                 [MonoTODO]
 124                 public override bool Equals (object obj)
 125                 {
 126                         throw new NotImplementedException ();
 127                 }
 128                 [MonoTODO]
 129                 public override int GetHashCode ()
 130                 {
 131                         throw new NotImplementedException ();
 132                 }
 133
 134                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 135                 internal extern byte[] get_signature_local ();
 136
 137                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 138                 internal extern byte[] get_signature_field ();
 139
 140                 public byte[] GetSignature ()
 141                 {
 142                         switch (type) {
 143                         case SignatureHelperType.HELPER_LOCAL:
 144                                 return get_signature_local ();
 145                         case SignatureHelperType.HELPER_FIELD:
 146                                 return get_signature_field ();
 147                         default:
 148                                 throw new NotImplementedException ();
 149                         }
 150                 }
 151
 152                 public override string ToString() {
 153                         return "SignatureHelper";
 154                 }
 155
 156                 internal static SignatureHelper GetMethodSigHelper( Module mod, CallingConventions callConv, CallingConvention unmanagedCallConv, Type returnType,
 157                                                                                                                    Type [] parameters)
 158                 {
 159                         if (!(mod is ModuleBuilder))
 160                                 throw new NotImplementedException ();
 161
 162                         SignatureHelper helper =
 163                                 new SignatureHelper ((ModuleBuilder)mod, SignatureHelperType.HELPER_METHOD);
 164                         helper.returnType = returnType;
 165                         helper.callConv = callConv;
 166                         helper.unmanagedCallConv = unmanagedCallConv;
 167
 168                         if (parameters != null) {
 169                                 helper.arguments = new Type [parameters.Length];
 170                                 for (int i = 0; i < parameters.Length; ++i)
 171                                         helper.arguments [i] = parameters [i];
 172                         }
 173
 174                         return helper;
 175                 }
 176
 177
 178         }
 179 }
 180