mcs/ilasm/codegen/MethodDef.cs

   1 //
   2 // Mono.ILASM.MethodDef
   3 //
   4 // Author(s):
   5 //  Jackson Harper (Jackson@LatitudeGeo.com)
   6 //
   7 // (C) 2003 Jackson Harper, All rights reserved
   8 //
   9
  10
  11 using System;
  12 using System.Text;
  13 using System.Collections;
  14 using System.Security;
  15
  16 namespace Mono.ILASM {
  17
  18         public class MethodDef : ICustomAttrTarget, IDeclSecurityTarget {
  19
  20                 private PEAPI.MethAttr meth_attr;
  21                 private PEAPI.CallConv call_conv;
  22                 private PEAPI.ImplAttr impl_attr;
  23                 private string name;
  24                 private string signature;
  25                 private Hashtable vararg_sig_table;
  26                 private ParamDef ret_param;
  27                 private ArrayList param_list;
  28                 private ArrayList inst_list;
  29                 private ArrayList customattr_list;
  30                 private DeclSecurity decl_sec;
  31                 private Hashtable label_table;
  32                 private Hashtable labelref_table;
  33                 private ArrayList label_list;
  34                 private PEAPI.MethodDef methoddef;
  35                 private bool entry_point;
  36                 private bool zero_init;
  37                 private bool is_resolved;
  38                 private bool is_defined;
  39                 private ArrayList local_list;
  40                 private Hashtable named_local_table;
  41                 private bool init_locals;
  42                 private int max_stack;
  43                 private bool pinvoke_info;
  44                 private ExternModule pinvoke_mod;
  45                 private string pinvoke_name;
  46                 private PEAPI.PInvokeAttr pinvoke_attr;
  47                 private SourceMethod source;
  48                 private TypeDef type_def;
  49                 private GenericParameters gen_params;
  50                 private Location start;
  51
  52                 public MethodDef (CodeGen codegen, PEAPI.MethAttr meth_attr,
  53                                   PEAPI.CallConv call_conv, PEAPI.ImplAttr impl_attr,
  54                                   string name, BaseTypeRef ret_type, ArrayList param_list,
  55                                   Location start, GenericParameters gen_params, TypeDef type_def)
  56                 {
  57                         this.meth_attr = meth_attr;
  58                         this.call_conv = call_conv;
  59                         this.impl_attr = impl_attr;
  60                         this.name = name;
  61                         this.param_list = param_list;
  62                         this.type_def = type_def;
  63                         this.gen_params = gen_params;
  64                         this.ret_param = new ParamDef (PEAPI.ParamAttr.Default, "", ret_type);
  65                         this.start = (Location) start.Clone ();
  66
  67                         inst_list = new ArrayList ();
  68                         label_table = new Hashtable ();
  69                         labelref_table = new Hashtable ();
  70                         label_list = new ArrayList ();
  71                         local_list = new ArrayList ();
  72                         named_local_table = new Hashtable ();
  73
  74                         entry_point = false;
  75                         zero_init = false;
  76                         init_locals = false;
  77                         max_stack = -1;
  78                         pinvoke_info = false;
  79
  80                         is_defined = false;
  81                         is_resolved = false;
  82                         ResolveGenParams ();
  83                         CreateSignature ();
  84
  85                         codegen.BeginMethodDef (this);
  86
  87                         if (codegen.SymbolWriter != null)
  88                                 source = codegen.SymbolWriter.BeginMethod (this, start);
  89                 }
  90
  91                 public string Name {
  92                         get { return name; }
  93                 }
  94
  95                 public string Signature {
  96                         get { return signature; }
  97                 }
  98
  99                 public BaseTypeRef RetType {
 100                         get { return ret_param.Type; }
 101                 }
 102
 103                 public PEAPI.CallConv CallConv {
 104                         get { return call_conv; }
 105                 }
 106
 107                 public PEAPI.MethodDef PeapiMethodDef {
 108                         get { return methoddef; }
 109                 }
 110
 111                 public PEAPI.MethAttr Attributes {
 112                         get { return meth_attr; }
 113                         set { meth_attr = value; }
 114                 }
 115
 116                 public bool IsVararg {
 117                         get { return (call_conv & PEAPI.CallConv.Vararg) != 0; }
 118                 }
 119
 120                 public bool IsStatic {
 121                         get { return (meth_attr & PEAPI.MethAttr.Static) != 0; }
 122                 }
 123
 124                 public bool IsVirtual {
 125                         get { return (meth_attr & PEAPI.MethAttr.Virtual) != 0; }
 126                 }
 127
 128                 public bool IsAbstract {
 129                         get { return (meth_attr & PEAPI.MethAttr.Abstract) != 0; }
 130                 }
 131
 132                 public Location StartLocation {
 133                         get { return start; }
 134                 }
 135
 136                 public DeclSecurity DeclSecurity {
 137                         get {
 138                                 if (decl_sec == null)
 139                                         decl_sec = new DeclSecurity ();
 140                                 return decl_sec;
 141                         }
 142                 }
 143
 144                 public BaseTypeRef[] ParamTypeList () {
 145
 146                         if (param_list == null)
 147                                 return new BaseTypeRef[0];
 148                         int count = 0;
 149                         BaseTypeRef[] type_list = new BaseTypeRef[param_list.Count];
 150                         foreach (ParamDef param in param_list) {
 151                                 type_list[count++] = param.Type;
 152                         }
 153                         return type_list;
 154                 }
 155
 156                 public void AddPInvokeInfo (PEAPI.PInvokeAttr pinvoke_attr, ExternModule pinvoke_mod,
 157                                 string pinvoke_name)
 158                 {
 159                         this.pinvoke_attr = pinvoke_attr;
 160                         this.pinvoke_mod = pinvoke_mod;
 161                         this.pinvoke_name = pinvoke_name;
 162                         pinvoke_info = true;
 163                 }
 164
 165                 public int GenParamCount {
 166                         get { return (gen_params != null ? gen_params.Count : 0); }
 167                 }
 168
 169                 public GenericParameter GetGenericParam (string id)
 170                 {
 171                         if (gen_params == null)
 172                                 return null;
 173
 174                         return gen_params.GetGenericParam (id);
 175                 }
 176
 177                 public GenericParameter GetGenericParam (int index)
 178                 {
 179                         if (gen_params == null || index < 0 || index >= gen_params.Count)
 180                                 return null;
 181
 182                         return gen_params [index];
 183                 }
 184
 185                 public int GetGenericParamNum (string id)
 186                 {
 187                         if (gen_params == null)
 188                                 return -1;
 189
 190                         return gen_params.GetGenericParamNum (id);
 191                 }
 192
 193                 public void AddCustomAttribute (CustomAttr customattr)
 194                 {
 195                         if (customattr_list == null)
 196                                 customattr_list = new ArrayList ();
 197
 198                         customattr_list.Add (customattr);
 199                 }
 200
 201                 public void AddRetTypeMarshalInfo (PEAPI.NativeType native_type)
 202                 {
 203                         this.ret_param.AddMarshalInfo (native_type);
 204                 }
 205
 206                 public void AddLocals (ArrayList local_list)
 207                 {
 208                         int slot_pos = this.local_list.Count;
 209
 210                         foreach (Local local in local_list) {
 211                                 if (local.Slot == -1) {
 212                                         local.Slot = slot_pos;
 213                                 }
 214                                 slot_pos++;
 215                                 if (local.Name == null)
 216                                         continue;
 217                                 if(!named_local_table.Contains(local.Name))
 218                                   named_local_table.Add (local.Name, local);
 219                         }
 220
 221                         this.local_list.AddRange (local_list);
 222                 }
 223
 224                 public Local GetNamedLocal (string name)
 225                 {
 226                         return (Local) named_local_table[name];
 227                 }
 228
 229                 public int GetNamedLocalSlot (string name)
 230                 {
 231                         Local local = (Local) named_local_table[name];
 232
 233                         return local.Slot;
 234                 }
 235
 236                 public int GetNamedParamPos (string name)
 237                 {
 238                         int pos = -1;
 239                         if (param_list == null)
 240                                 return -1;
 241
 242                         if (!IsStatic)
 243                                 pos ++;
 244                         foreach (ParamDef param in param_list) {
 245                                 pos ++;
 246                                 if (param.Name.CompareTo (name) == 0)
 247                                         return pos;
 248                         }
 249
 250                         return pos;
 251                 }
 252
 253                 /* index - 0: return type
 254                  *         1: params start from this
 255                  */
 256                 public ParamDef GetParam (int index)
 257                 {
 258                         if (index == 0)
 259                                 return ret_param;
 260
 261                         if ((param_list == null) || (index < 0) || (index > param_list.Count))
 262                                 return null;
 263
 264                         index --; /* param_list has params zero-based */
 265
 266                         if (param_list [index] != null)
 267                                 return (ParamDef)param_list [index];
 268                         else
 269                                 return null;
 270                 }
 271
 272                 public void InitLocals ()
 273                 {
 274                         init_locals = true;
 275                 }
 276
 277                 public void EntryPoint ()
 278                 {
 279                         if (!IsStatic)
 280                                 Report.Error ("Non-static method as entrypoint.");
 281                         entry_point = true;
 282                 }
 283
 284                 public void ZeroInit ()
 285                 {
 286                         zero_init = true;
 287                 }
 288
 289                 public void SetMaxStack (int max_stack)
 290                 {
 291                         this.max_stack = max_stack;
 292                 }
 293
 294                 public void ResolveGenParam (PEAPI.GenParam gpar)
 295                 {
 296                         if (gpar.Index != -1)
 297                                 return;
 298
 299                         if (gpar.Type == PEAPI.GenParamType.MVar)
 300                                 gpar.Index = GetGenericParamNum (gpar.Name);
 301                         else
 302                                 gpar.Index = type_def.GetGenericParamNum (gpar.Name);
 303
 304                         if (gpar.Index < 0)
 305                                 Report.Error (String.Format ("Invalid {0}type parameter '{1}'",
 306                                                         (gpar.Type == PEAPI.GenParamType.MVar ? "method " : ""),
 307                                                          gpar.Name));
 308                 }
 309
 310                 public void ResolveGenParams ()
 311                 {
 312                         GenericParameters type_params = (type_def != null) ? type_def.TypeParameters : null;
 313
 314                         if (gen_params == null && type_params == null)
 315                                 return;
 316
 317                         if (gen_params != null)
 318                                 gen_params.ResolveConstraints (type_params, gen_params);
 319
 320                         BaseGenericTypeRef gtr = RetType as BaseGenericTypeRef;
 321                         if (gtr != null)
 322                                 gtr.Resolve (type_params, gen_params);
 323
 324                         if (param_list == null)
 325                                 return;
 326
 327                         foreach (ParamDef param in param_list) {
 328                                 gtr = param.Type as BaseGenericTypeRef;
 329                                 if (gtr != null)
 330                                         gtr.Resolve (type_params, gen_params);
 331                         }
 332                 }
 333
 334                 public PEAPI.MethodDef Resolve (CodeGen code_gen)
 335                 {
 336                         return Resolve (code_gen, null);
 337                 }
 338
 339                 public PEAPI.MethodDef Resolve (CodeGen code_gen, PEAPI.ClassDef classdef)
 340                 {
 341                         if (is_resolved)
 342                                 return methoddef;
 343
 344                         PEAPI.Param [] param_array = GenerateParams (code_gen);
 345                         FixAttributes ();
 346                         ret_param.Define (code_gen);
 347
 348                         if (classdef == null)
 349                                 methoddef = code_gen.PEFile.AddMethod (meth_attr, impl_attr,
 350                                                 name, ret_param.PeapiParam, param_array);
 351                         else
 352                                 methoddef = classdef.AddMethod (meth_attr, impl_attr,
 353                                                 name, ret_param.PeapiParam, param_array);
 354
 355                         methoddef.AddCallConv (call_conv);
 356
 357                         is_resolved = true;
 358
 359                         return methoddef;
 360                 }
 361
 362                 private PEAPI.Param [] GenerateParams (CodeGen code_gen)
 363                 {
 364                         PEAPI.Param[] param_array;
 365
 366                         if (param_list != null && param_list.Count > 0) {
 367                                  int param_count = param_list.Count;
 368
 369                                  // Remove the last param if its the sentinel, not sure what
 370                                 // should happen with more then one sentinel
 371                                 ParamDef last = (ParamDef) param_list [param_count-1];
 372                                 if (last.IsSentinel ())
 373                                         param_count--;
 374
 375                                 param_array = new PEAPI.Param [param_count];
 376                                 for (int i = 0; i < param_count; i++) {
 377                                         ParamDef paramdef = (ParamDef) param_list [i];
 378                                         paramdef.Define (code_gen);
 379                                         param_array [i] = paramdef.PeapiParam;
 380                                 }
 381
 382                         } else {
 383                                 param_array = new PEAPI.Param [0];
 384                         }
 385
 386                         return param_array;
 387                 }
 388
 389                 public PEAPI.MethodRef GetVarargSig (PEAPI.Type[] opt)
 390                 {
 391                         if (!is_resolved)
 392                                 throw new InternalErrorException ("Methods must be resolved before a vararg sig can be created.");
 393
 394                         PEAPI.MethodRef methref = null;
 395                         StringBuilder sigbuilder = new StringBuilder ();
 396                         string sig;
 397                         foreach (PEAPI.Type t in opt)
 398                                 sigbuilder.Append (opt + ", ");
 399                         sig = sigbuilder.ToString ();
 400
 401                         if (vararg_sig_table == null) {
 402                                 vararg_sig_table = new Hashtable ();
 403                         } else {
 404                                 methref = vararg_sig_table [sig] as PEAPI.MethodRef;
 405                         }
 406
 407                         if (methref == null) {
 408                                 methref = methoddef.MakeVarArgSignature (opt);
 409                                 vararg_sig_table [sig] = methref;
 410                         }
 411
 412                         return methref;
 413                 }
 414
 415                 /// <summary>
 416                 ///  Define a member method
 417                 /// </summary>
 418                 public void Define (CodeGen code_gen)
 419                 {
 420                         if (is_defined)
 421                                 return;
 422
 423                         if (type_def == null)
 424                                 /* Global method */
 425                                 Resolve (code_gen, null);
 426                         else
 427                                 Resolve (code_gen, (PEAPI.ClassDef) type_def.ClassDef);
 428
 429                         WriteCode (code_gen, methoddef);
 430
 431                         //code_gen.Report.Message (String.Format ("Assembled method {0}::{1}", typedef.FullName, name));
 432                         is_defined = true;
 433                 }
 434
 435                 public void AddInstr (IInstr instr)
 436                 {
 437                         inst_list.Add (instr);
 438                 }
 439
 440                 protected void WriteCode (CodeGen code_gen, PEAPI.MethodDef methoddef)
 441                 {
 442                         /// Add the custrom attributes to this method
 443                         if (customattr_list != null)
 444                                 foreach (CustomAttr customattr in customattr_list) {
 445                                         customattr.AddTo (code_gen, methoddef);
 446                                         if (customattr.IsSuppressUnmanaged (code_gen))
 447                                                 methoddef.AddMethAttribute (PEAPI.MethAttr.HasSecurity);
 448                                 }
 449
 450                         /// Add declarative security to this method
 451                         if (decl_sec != null) {
 452                                 decl_sec.AddTo (code_gen, methoddef);
 453                                 methoddef.AddMethAttribute (PEAPI.MethAttr.HasSecurity);
 454                         }
 455
 456                         // Generic type parameters
 457                         if (gen_params != null)
 458                                 gen_params.Resolve (code_gen, methoddef);
 459
 460                         if (IsAbstract)
 461                                 return;
 462
 463                         if (entry_point)
 464                                 methoddef.DeclareEntryPoint ();
 465
 466                         if (local_list.Count > 0) {
 467                                 int ec = Report.ErrorCount;
 468                                 PEAPI.Local[] local_array = new PEAPI.Local[local_list.Count];
 469
 470                                 foreach (Local local in local_list)
 471                                         local_array[local.Slot]  = local.GetPeapiLocal (code_gen);
 472
 473                                 if (Report.ErrorCount > ec)
 474                                         return;
 475
 476                                 if (zero_init)
 477                                         init_locals = true;
 478
 479                                 methoddef.AddLocals (local_array, init_locals);
 480                         }
 481
 482                         /// Nothing seems to work if maxstack is not set,
 483                         /// i need to find out if this NEEDs to be set
 484                         /// and what its default value should be
 485                         if (max_stack < 0)
 486                                 max_stack = 8;
 487                         methoddef.SetMaxStack (max_stack);
 488
 489                         if (pinvoke_info) {
 490                                 methoddef.AddPInvokeInfo (pinvoke_mod.ModuleRef,
 491                                                 (pinvoke_name != null ? pinvoke_name : name), pinvoke_attr);
 492                         }
 493
 494                         if (inst_list.Count < 1)
 495                                 return;
 496
 497                         PEAPI.CILInstructions cil = methoddef.CreateCodeBuffer ();
 498                         /// Create all the labels
 499                         /// TODO: Most labels don't actually need to be created so we could
 500                         /// probably only create the ones that need to be
 501                         LabelInfo[] label_info = new LabelInfo[label_table.Count + label_list.Count];
 502                         label_table.Values.CopyTo (label_info, 0);
 503                         label_list.CopyTo (label_info, label_table.Count);
 504                         int previous_pos = -1;
 505                         LabelInfo previous_label = null;
 506                         Array.Sort (label_info);
 507
 508                         foreach (LabelInfo label in label_info) {
 509                                 if (label.UseOffset) {
 510                                         label.Define (new PEAPI.CILLabel (label.Offset));
 511                                         continue;
 512                                 }
 513                                 if (label.Pos == previous_pos)
 514                                         label.Label = previous_label.Label;
 515                                 else
 516                                         label.Define (cil.NewLabel ());
 517
 518                                 previous_label = label;
 519                                 previous_pos = label.Pos;
 520                         }
 521
 522                         // Set all the label refs
 523                         foreach (LabelInfo label in labelref_table.Values) {
 524                                 LabelInfo def = (LabelInfo) label_table[label.Name];
 525                                 if (def == null) {
 526                                         Report.Error ("Undefined Label:  " + label);
 527                                         return;
 528                                 }
 529                                 label.Label = def.Label;
 530                         }
 531
 532                         int label_pos = 0;
 533                         int next_label_pos = (label_info.Length > 0 ? label_info[0].Pos : -1);
 534
 535                         for (int i=0; i<inst_list.Count; i++) {
 536                                 IInstr instr = (IInstr) inst_list[i];
 537                                 if (next_label_pos == i) {
 538                                         cil.CodeLabel (label_info[label_pos].Label);
 539                                         if (label_pos < label_info.Length) {
 540                                                 while (next_label_pos == i && ++label_pos < label_info.Length) {
 541                                                         if (label_info[label_pos].UseOffset)
 542                                                                 cil.CodeLabel (label_info[label_pos].Label);
 543                                                        next_label_pos = label_info[label_pos].Pos;
 544                                                 }
 545                                         }
 546                                         if (label_pos >= label_info.Length)
 547                                                 next_label_pos = -1;
 548                                 }
 549                                 if (source != null)
 550                                         source.MarkLocation (instr.Location.line, cil.Offset);
 551                                 instr.Emit (code_gen, this, cil);
 552                         }
 553
 554                         if (source != null)
 555                                 source.MarkLocation (source.EndLine, cil.Offset);
 556                 }
 557
 558                 public LabelInfo AddLabel (string name)
 559                 {
 560                         LabelInfo label_info = (LabelInfo) label_table[name];
 561                         if (label_info != null)
 562                                 Report.Error ("Duplicate label '" + name + "'");
 563
 564                         label_info = new LabelInfo (name, inst_list.Count);
 565                         label_table [name] = label_info;
 566                         return label_info;
 567                 }
 568
 569                 public LabelInfo AddLabelRef (string name)
 570                 {
 571                         LabelInfo label_info = (LabelInfo) label_table[name];
 572                         if (label_info != null)
 573                                 return label_info;
 574                         label_info = (LabelInfo) labelref_table[name];
 575                         if (label_info != null)
 576                                 return label_info;
 577                         label_info = new LabelInfo (name, -1);
 578                         labelref_table.Add (name, label_info);
 579                         return label_info;
 580                 }
 581
 582                 public LabelInfo AddLabel (int offset)
 583                 {
 584                         // We go pos + 1 so this line is not counted
 585                         LabelInfo label_info = new LabelInfo (null, inst_list.Count+1, (uint) offset);
 586                         label_list.Add (label_info);
 587                         return label_info;
 588                 }
 589
 590                 public LabelInfo AddLabel ()
 591                 {
 592                         LabelInfo label_info = new LabelInfo (null, inst_list.Count);
 593                         label_list.Add (label_info);
 594                         return label_info;
 595                 }
 596
 597                 public PEAPI.CILLabel GetLabelDef (string name)
 598                 {
 599                         LabelInfo label_info = (LabelInfo) label_table[name];
 600
 601                         return label_info.Label;
 602                 }
 603
 604                 public PEAPI.CILLabel GetLabelDef (int pos)
 605                 {
 606                         foreach (LabelInfo li in label_list) {
 607                                 if (li.Pos == pos)
 608                                         return li.Label;
 609                         }
 610                         return null;
 611                 }
 612
 613                 private void CreateSignature ()
 614                 {
 615                         if (IsVararg)
 616                                 signature = CreateVarargSignature (RetType, name, param_list);
 617                         else
 618                                 signature = CreateSignature (RetType, name, param_list, GenParamCount);
 619                 }
 620
 621                 public static string CreateSignature (BaseTypeRef RetType, string name, IList param_list, int gen_param_count)
 622                 {
 623                         StringBuilder builder = new StringBuilder ();
 624
 625                         builder.Append (RetType.FullName);
 626                         builder.Append (" ");
 627                         builder.Append (name);
 628                         if (gen_param_count > 0)
 629                                 builder.AppendFormat ("`{0}", gen_param_count);
 630                         builder.Append ('(');
 631
 632                         if (param_list != null) {
 633                                 bool first = true;
 634                                 foreach (ParamDef paramdef in param_list) {
 635                                         if (!first)
 636                                                 builder.Append (',');
 637                                         builder.Append (paramdef.TypeName);
 638                                         first = false;
 639                                 }
 640                         }
 641                         builder.Append (')');
 642
 643                         return builder.ToString ();
 644                 }
 645
 646                 public static string CreateVarargSignature (BaseTypeRef RetType, string name, IList param_list)
 647                 {
 648                         StringBuilder builder = new StringBuilder ();
 649                         ParamDef last = null;
 650
 651                         builder.Append (RetType.FullName);
 652                         builder.Append (" ");
 653                         builder.Append (name);
 654                         builder.Append ('(');
 655
 656                         bool first = true;
 657                         if (param_list != null) {
 658                                 foreach (ParamDef paramdef in param_list) {
 659                                         if (!first)
 660                                                 builder.Append (',');
 661                                         builder.Append (paramdef.TypeName);
 662                                         first = false;
 663                                 }
 664                                 last = (ParamDef) param_list[param_list.Count - 1];
 665                         }
 666
 667
 668                         if (last == null || !last.IsSentinel ()) {
 669                                 if (!first)
 670                                         builder.Append (',');
 671                                 builder.Append ("...");
 672                         }
 673
 674                         builder.Append (')');
 675
 676                         return builder.ToString ();
 677                 }
 678
 679                 public static string CreateVarargSignature (BaseTypeRef RetType, string name, BaseTypeRef [] param_list)
 680                 {
 681                         StringBuilder builder = new StringBuilder ();
 682                         BaseTypeRef last = null;
 683
 684                         builder.Append (RetType.FullName);
 685                         builder.Append (" ");
 686                         builder.Append (name);
 687                         builder.Append ('(');
 688
 689                         bool first = true;
 690                         if (param_list != null && param_list.Length > 0) {
 691                                 foreach (BaseTypeRef param in param_list) {
 692                                         if (!first)
 693                                                 builder.Append (',');
 694                                         builder.Append (param.FullName);
 695                                         first = false;
 696                                         last = param;
 697                                         if (param is SentinelTypeRef)
 698                                                 break;
 699                                 }
 700
 701                         }
 702
 703                         if (last == null || !(last is SentinelTypeRef)) {
 704                                 if (!first)
 705                                         builder.Append (',');
 706                                 builder.Append ("...");
 707                         }
 708
 709                         builder.Append (')');
 710
 711                         return builder.ToString ();
 712                 }
 713
 714                 public static string CreateSignature (BaseTypeRef RetType, string name, BaseTypeRef[] param_list, int gen_param_count)
 715                 {
 716                         StringBuilder builder = new StringBuilder ();
 717
 718                         builder.Append (RetType.FullName);
 719                         builder.Append (" ");
 720                         builder.Append (name);
 721                         if (gen_param_count > 0)
 722                                 builder.AppendFormat ("`{0}", gen_param_count);
 723                         builder.Append ('(');
 724
 725                         if (param_list != null) {
 726                                 bool first = true;
 727                                 foreach (BaseTypeRef param in param_list) {
 728                                         if (!first)
 729                                                 builder.Append (',');
 730                                         builder.Append (param.FullName);
 731                                         first = false;
 732                                         if (param is SentinelTypeRef)
 733                                                 break;
 734                                 }
 735                         }
 736                         builder.Append (')');
 737
 738                         return builder.ToString ();
 739                 }
 740
 741                 private void FixAttributes ()
 742                 {
 743                         if (name == ".ctor" || name == ".cctor")
 744                                 meth_attr |= PEAPI.MethAttr.SpecialName | PEAPI.MethAttr.RTSpecialName;
 745                         // If methods aren't flagged as static they are instance
 746                         if ((PEAPI.MethAttr.Static & meth_attr) == 0)
 747                                 call_conv |= PEAPI.CallConv.Instance;
 748                 }
 749
 750         }
 751
 752 }
 753