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
  43         public sealed class SignatureHelper {
  44                 internal enum SignatureHelperType {
  45                         HELPER_FIELD,
  46                         HELPER_LOCAL,
  47                         HELPER_METHOD,
  48                         HELPER_PROPERTY
  49                 }
  50
  51                 private ModuleBuilder module;
  52                 private Type[] arguments;
  53                 private SignatureHelperType type;
  54                 private Type returnType;
  55                 private CallingConventions callConv;
  56                 private CallingConvention unmanagedCallConv;
  57
  58                 internal SignatureHelper (ModuleBuilder module, SignatureHelperType type)
  59                 {
  60                         this.type = type;
  61                         this.module = module;
  62                 }
  63
  64                 public static SignatureHelper GetFieldSigHelper (Module mod)
  65                 {
  66                         if (!(mod is ModuleBuilder))
  67                                 throw new NotImplementedException ();
  68
  69                         return new SignatureHelper ((ModuleBuilder) mod, SignatureHelperType.HELPER_FIELD);
  70                 }
  71
  72                 public static SignatureHelper GetLocalVarSigHelper (Module mod)
  73                 {
  74                         if (!(mod is ModuleBuilder))
  75                                 throw new NotImplementedException ();
  76
  77                         return new SignatureHelper ((ModuleBuilder) mod, SignatureHelperType.HELPER_LOCAL);
  78                 }
  79
  80                 public static SignatureHelper GetMethodSigHelper( Module mod, CallingConventions callingConvention, Type returnType)
  81                 {
  82                         return GetMethodSigHelper (mod, callingConvention, (CallingConvention)0, returnType, null);
  83                 }
  84
  85                 public static SignatureHelper GetMethodSigHelper( Module mod, CallingConvention unmanagedCallingConvention, Type returnType)
  86                 {
  87                         return GetMethodSigHelper (mod, CallingConventions.Standard, unmanagedCallingConvention, returnType, null);
  88                 }
  89
  90                 public static SignatureHelper GetMethodSigHelper( Module mod, Type returnType, Type[] parameterTypes)
  91                 {
  92                         return GetMethodSigHelper (mod, CallingConventions.Standard,
  93                                                                            (CallingConvention)0, returnType,
  94                                                                            parameterTypes);
  95                 }
  96                 [MonoTODO]
  97                 public static SignatureHelper GetPropertySigHelper( Module mod, Type returnType, Type[] parameterTypes)
  98                 {
  99                         throw new NotImplementedException ();
 100                 }
 101
 102                 public void AddArgument (Type clsArgument)
 103                 {
 104                         if (arguments != null) {
 105                                 Type[] new_a = new Type [arguments.Length + 1];
 106                                 System.Array.Copy (arguments, new_a, arguments.Length);
 107                                 new_a [arguments.Length] = clsArgument;
 108                                 arguments = new_a;
 109                         } else {
 110                                 arguments = new Type [1];
 111                                 arguments [0] = clsArgument;
 112                         }
 113                 }
 114                 [MonoTODO]
 115                 public void AddSentinel ()
 116                 {
 117                         throw new NotImplementedException ();
 118                 }
 119                 [MonoTODO]
 120                 public override bool Equals (object obj)
 121                 {
 122                         throw new NotImplementedException ();
 123                 }
 124                 [MonoTODO]
 125                 public override int GetHashCode ()
 126                 {
 127                         throw new NotImplementedException ();
 128                 }
 129
 130                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 131                 internal extern byte[] get_signature_local ();
 132
 133                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 134                 internal extern byte[] get_signature_field ();
 135
 136                 public byte[] GetSignature ()
 137                 {
 138                         switch (type) {
 139                         case SignatureHelperType.HELPER_LOCAL:
 140                                 return get_signature_local ();
 141                         case SignatureHelperType.HELPER_FIELD:
 142                                 return get_signature_field ();
 143                         default:
 144                                 throw new NotImplementedException ();
 145                         }
 146                 }
 147
 148                 public override string ToString() {
 149                         return "SignatureHelper";
 150                 }
 151
 152                 internal static SignatureHelper GetMethodSigHelper( Module mod, CallingConventions callConv, CallingConvention unmanagedCallConv, Type returnType,
 153                                                                                                                    Type [] parameters)
 154                 {
 155                         if (!(mod is ModuleBuilder))
 156                                 throw new NotImplementedException ();
 157
 158                         SignatureHelper helper =
 159                                 new SignatureHelper ((ModuleBuilder)mod, SignatureHelperType.HELPER_METHOD);
 160                         helper.returnType = returnType;
 161                         helper.callConv = callConv;
 162                         helper.unmanagedCallConv = unmanagedCallConv;
 163
 164                         if (parameters != null) {
 165                                 helper.arguments = new Type [parameters.Length];
 166                                 for (int i = 0; i < parameters.Length; ++i)
 167                                         helper.arguments [i] = parameters [i];
 168                         }
 169
 170                         return helper;
 171                 }
 172
 173
 174         }
 175 }
 176