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

   1 //
   2 // System.Reflection.Emit/ConstructorBuilder.cs
   3 //
   4 // Author:
   5 //   Paolo Molaro (lupus@ximian.com)
   6 //
   7 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Reflection;
  35 using System.Reflection.Emit;
  36 using System.Globalization;
  37 using System.Security;
  38 using System.Security.Permissions;
  39 using System.Runtime.InteropServices;
  40 using System.Diagnostics.SymbolStore;
  41
  42 namespace System.Reflection.Emit {
  43
  44 #if NET_2_0
  45         [ComVisible (true)]
  46         [ComDefaultInterface (typeof (_ConstructorBuilder))]
  47 #endif
  48         [ClassInterface (ClassInterfaceType.None)]
  49         public sealed class ConstructorBuilder : ConstructorInfo, _ConstructorBuilder {
  50                 private RuntimeMethodHandle mhandle;
  51                 private ILGenerator ilgen;
  52                 private Type[] parameters;
  53                 private MethodAttributes attrs;
  54                 private MethodImplAttributes iattrs;
  55                 private int table_idx;
  56                 private CallingConventions call_conv;
  57                 private TypeBuilder type;
  58                 private ParameterBuilder[] pinfo;
  59                 private CustomAttributeBuilder[] cattrs;
  60                 private bool init_locals = true;
  61                 private Type[][] paramModReq;
  62                 private Type[][] paramModOpt;
  63                 private RefEmitPermissionSet[] permissions;
  64
  65                 internal ConstructorBuilder (TypeBuilder tb, MethodAttributes attributes, CallingConventions callingConvention, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt) {
  66                         attrs = attributes | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName;
  67                         call_conv = callingConvention;
  68                         if (parameterTypes != null) {
  69                                 for (int i = 0; i < parameterTypes.Length; ++i)
  70                                         if (parameterTypes [i] == null)
  71                                                 throw new ArgumentException ("Elements of the parameterTypes array cannot be null", "parameterTypes");
  72
  73                                 this.parameters = new Type [parameterTypes.Length];
  74                                 System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
  75                         }
  76                         type = tb;
  77                         this.paramModReq = paramModReq;
  78                         this.paramModOpt = paramModOpt;
  79                         table_idx = get_next_table_index (this, 0x06, true);
  80
  81                         ((ModuleBuilder)tb.Module).RegisterToken (this, GetToken ().Token);
  82                 }
  83
  84 #if NET_2_0
  85                 [MonoTODO]
  86                 public override CallingConventions CallingConvention {
  87                         get { return call_conv; }
  88                 }
  89 #endif
  90                 public bool InitLocals {
  91                         get {return init_locals;}
  92                         set {init_locals = value;}
  93                 }
  94
  95                 internal TypeBuilder TypeBuilder {
  96                         get {return type;}
  97                 }
  98
  99                 public override MethodImplAttributes GetMethodImplementationFlags() {
 100                         return iattrs;
 101                 }
 102                 public override ParameterInfo[] GetParameters() {
 103                         if (parameters == null)
 104                                 return null;
 105
 106                         ParameterInfo[] retval = new ParameterInfo [parameters.Length];
 107                         for (int i = 0; i < parameters.Length; i++) {
 108                                 retval [i] = new ParameterInfo (pinfo == null ? null : pinfo [i+1], parameters [i], this, i + 1);
 109                         }
 110
 111                         return retval;
 112                 }
 113
 114                 internal override int GetParameterCount ()
 115                 {
 116                         if (parameters == null)
 117                                 return 0;
 118
 119                         return parameters.Length;
 120                 }
 121
 122                 public override Object Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) {
 123                         throw not_supported ();
 124                 }
 125                 public override object Invoke(BindingFlags invokeAttr, Binder binder, object[] parameters, CultureInfo culture) {
 126                         throw not_supported ();
 127                 }
 128
 129                 public override RuntimeMethodHandle MethodHandle {
 130                         get {
 131                                 return mhandle;
 132                         }
 133                 }
 134
 135                 public override MethodAttributes Attributes {
 136                         get {return attrs;}
 137                 }
 138                 public override Type ReflectedType { get {return type;}}
 139                 public override Type DeclaringType { get {return type;}}
 140                 public Type ReturnType { get {return null;}}
 141                 public override string Name {
 142                         get {return (attrs & MethodAttributes.Static) != 0 ? ConstructorInfo.TypeConstructorName : ConstructorInfo.ConstructorName;}
 143                 }
 144                 public string Signature {
 145                         get {return "constructor signature";}
 146                 }
 147
 148                 public void AddDeclarativeSecurity( SecurityAction action, PermissionSet pset) {
 149                         if (pset == null)
 150                                 throw new ArgumentNullException ("pset");
 151                         if ((action == SecurityAction.RequestMinimum) ||
 152                                 (action == SecurityAction.RequestOptional) ||
 153                                 (action == SecurityAction.RequestRefuse))
 154                                 throw new ArgumentOutOfRangeException ("Request* values are not permitted", "action");
 155
 156                         RejectIfCreated ();
 157
 158                         if (permissions != null) {
 159                                 /* Check duplicate actions */
 160                                 foreach (RefEmitPermissionSet set in permissions)
 161                                         if (set.action == action)
 162                                                 throw new InvalidOperationException ("Multiple permission sets specified with the same SecurityAction.");
 163
 164                                 RefEmitPermissionSet[] new_array = new RefEmitPermissionSet [permissions.Length + 1];
 165                                 permissions.CopyTo (new_array, 0);
 166                                 permissions = new_array;
 167                         }
 168                         else
 169                                 permissions = new RefEmitPermissionSet [1];
 170
 171                         permissions [permissions.Length - 1] = new RefEmitPermissionSet (action, pset.ToXml ().ToString ());
 172                         attrs |= MethodAttributes.HasSecurity;
 173                 }
 174
 175                 public ParameterBuilder DefineParameter(int iSequence, ParameterAttributes attributes, string strParamName)
 176                 {
 177                         if ((iSequence < 1) || (iSequence > parameters.Length))
 178                                 throw new ArgumentOutOfRangeException ("iSequence");
 179                         if (type.is_created)
 180                                 throw not_after_created ();
 181
 182                         ParameterBuilder pb = new ParameterBuilder (this, iSequence, attributes, strParamName);
 183                         if (pinfo == null)
 184                                 pinfo = new ParameterBuilder [parameters.Length + 1];
 185                         pinfo [iSequence] = pb;
 186                         return pb;
 187                 }
 188
 189                 public override bool IsDefined (Type attribute_type, bool inherit) {
 190                         throw not_supported ();
 191                 }
 192
 193                 public override object [] GetCustomAttributes (bool inherit) {
 194                         /*
 195                          * On MS.NET, this always returns not_supported, but we can't do this
 196                          * since there would be no way to obtain custom attributes of
 197                          * dynamically created ctors.
 198                          */
 199                         if (type.is_created)
 200                                 return MonoCustomAttrs.GetCustomAttributes (this, inherit);
 201                         else
 202                                 throw not_supported ();
 203                 }
 204
 205                 public override object [] GetCustomAttributes (Type attributeType, bool inherit) {
 206                         if (type.is_created)
 207                                 return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
 208                         else
 209                                 throw not_supported ();
 210                 }
 211
 212                 public ILGenerator GetILGenerator () {
 213                         return GetILGenerator (64);
 214                 }
 215
 216 #if NET_2_0
 217                 public
 218 #else
 219                 internal
 220 #endif
 221                 ILGenerator GetILGenerator (int size) {
 222                         if (ilgen != null)
 223                                 return ilgen;
 224                         ilgen = new ILGenerator (type.Module, ((ModuleBuilder)type.Module).GetTokenGenerator (), size);
 225                         return ilgen;
 226                 }
 227
 228                 public void SetCustomAttribute( CustomAttributeBuilder customBuilder) {
 229                         if (customBuilder == null)
 230                                 throw new ArgumentNullException ("customBuilder");
 231
 232                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
 233                         if (attrname == "System.Runtime.CompilerServices.MethodImplAttribute") {
 234                                 byte[] data = customBuilder.Data;
 235                                 int impla; // the (stupid) ctor takes a short or an int ...
 236                                 impla = (int)data [2];
 237                                 impla |= ((int)data [3]) << 8;
 238                                 SetImplementationFlags ((MethodImplAttributes)impla);
 239                                 return;
 240                         }
 241                         if (cattrs != null) {
 242                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 243                                 cattrs.CopyTo (new_array, 0);
 244                                 new_array [cattrs.Length] = customBuilder;
 245                                 cattrs = new_array;
 246                         } else {
 247                                 cattrs = new CustomAttributeBuilder [1];
 248                                 cattrs [0] = customBuilder;
 249                         }
 250                 }
 251
 252 #if NET_2_0
 253                 [ComVisible (true)]
 254 #endif
 255                 public void SetCustomAttribute( ConstructorInfo con, byte[] binaryAttribute) {
 256                         if (con == null)
 257                                 throw new ArgumentNullException ("con");
 258                         if (binaryAttribute == null)
 259                                 throw new ArgumentNullException ("binaryAttribute");
 260
 261                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 262                 }
 263                 public void SetImplementationFlags( MethodImplAttributes attributes) {
 264                         if (type.is_created)
 265                                 throw not_after_created ();
 266
 267                         iattrs = attributes;
 268                 }
 269                 public Module GetModule() {
 270                         return type.Module;
 271                 }
 272                 public MethodToken GetToken() {
 273                         return new MethodToken (0x06000000 | table_idx);
 274                 }
 275
 276                 [MonoTODO]
 277                 public void SetSymCustomAttribute( string name, byte[] data) {
 278                         if (type.is_created)
 279                                 throw not_after_created ();
 280                 }
 281
 282 #if NET_2_0 || BOOTSTRAP_NET_2_0
 283                 public override Module Module {
 284                         get {
 285                                 return base.Module;
 286                         }
 287                 }
 288 #endif
 289
 290                 public override string ToString() {
 291                         return "ConstructorBuilder ['" + type.Name + "']";
 292                 }
 293
 294                 internal void fixup () {
 295                         if (((attrs & (MethodAttributes.Abstract | MethodAttributes.PinvokeImpl)) == 0) && ((iattrs & (MethodImplAttributes.Runtime | MethodImplAttributes.InternalCall)) == 0)) {
 296                         if ((ilgen == null) || (ILGenerator.Mono_GetCurrentOffset (ilgen) == 0))
 297                                 throw new InvalidOperationException ("Method '" + Name + "' does not have a method body.");
 298                         }
 299                         if (ilgen != null)
 300                                 ilgen.label_fixup ();
 301                 }
 302
 303                 internal void GenerateDebugInfo (ISymbolWriter symbolWriter)
 304                 {
 305                         if (ilgen != null && ilgen.HasDebugInfo) {
 306                                 SymbolToken token = new SymbolToken (GetToken().Token);
 307                                 symbolWriter.OpenMethod (token);
 308                                 symbolWriter.SetSymAttribute (token, "__name", System.Text.Encoding.UTF8.GetBytes (Name));
 309                                 ilgen.GenerateDebugInfo (symbolWriter);
 310                                 symbolWriter.CloseMethod ();
 311                         }
 312                 }
 313
 314                 internal override int get_next_table_index (object obj, int table, bool inc) {
 315                         return type.get_next_table_index (obj, table, inc);
 316                 }
 317
 318                 private void RejectIfCreated () {
 319                         if (type.is_created)
 320                                 throw new InvalidOperationException ("Type definition of the method is complete.");
 321                 }
 322
 323                 private Exception not_supported () {
 324                         return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
 325                 }
 326
 327                 private Exception not_after_created () {
 328                         return new InvalidOperationException ("Unable to change after type has been created.");
 329                 }
 330
 331                 void _ConstructorBuilder.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
 332                 {
 333                         throw new NotImplementedException ();
 334                 }
 335
 336                 void _ConstructorBuilder.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
 337                 {
 338                         throw new NotImplementedException ();
 339                 }
 340
 341                 void _ConstructorBuilder.GetTypeInfoCount (out uint pcTInfo)
 342                 {
 343                         throw new NotImplementedException ();
 344                 }
 345
 346                 void _ConstructorBuilder.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
 347                 {
 348                         throw new NotImplementedException ();
 349                 }
 350         }
 351 }