mcs/ilasm/codegen/ExternTable.cs

   1 //
   2 // Mono.ILASM.ExternTable.cs
   3 //
   4 // Author(s):
   5 //  Jackson Harper (Jackson@LatitudeGeo.com)
   6 //
   7 // (C) 2003 Jackson Harper, All rights reserved
   8 //
   9
  10 using System;
  11 using System.Collections;
  12 using System.Collections.Generic;
  13 using System.Reflection;
  14 using System.Security;
  15 using System.Globalization;
  16 using PEAPI;
  17
  18 namespace Mono.ILASM {
  19
  20         public interface IScope {
  21                 ExternTypeRef GetTypeRef (string full_name, bool is_valuetype);
  22                 PEAPI.ClassRef GetType (string full_name, bool is_valuetype);
  23                 string FullName { get; }
  24         }
  25
  26         public abstract class ExternRef : ICustomAttrTarget, IScope {
  27
  28                 protected string name;
  29                 protected Hashtable class_table;
  30                 protected Hashtable typeref_table;
  31                 protected ArrayList customattr_list;
  32                 protected bool is_resolved;
  33
  34                 public abstract void Resolve (CodeGen codegen);
  35                 public abstract PEAPI.IExternRef GetExternRef ();
  36
  37                 public ExternRef (string name)
  38                 {
  39                         this.name = name;
  40                         typeref_table = new Hashtable ();
  41                         class_table = new Hashtable ();
  42                 }
  43
  44                 public string Name {
  45                         get { return name; }
  46                 }
  47
  48                 public virtual string FullName {
  49                         get { return name; }
  50                 }
  51
  52                 public void AddCustomAttribute (CustomAttr customattr)
  53                 {
  54                         if (customattr_list == null)
  55                                 customattr_list = new ArrayList ();
  56
  57                         customattr_list.Add (customattr);
  58                 }
  59
  60                 public ExternTypeRef GetTypeRef (string full_name, bool is_valuetype)
  61                 {
  62                         string first= full_name;
  63                         string rest = "";
  64                         int slash = full_name.IndexOf ('/');
  65                         if (slash > 0) {
  66                                 first = full_name.Substring (0, slash);
  67                                 rest = full_name.Substring (slash + 1);
  68                         }
  69
  70                         ExternTypeRef type_ref = typeref_table [first] as ExternTypeRef;
  71
  72                         if (type_ref != null) {
  73                                 if (is_valuetype && rest == "")
  74                                         type_ref.MakeValueClass ();
  75                         } else {
  76                                 type_ref = new ExternTypeRef (this, first, is_valuetype);
  77                                 typeref_table [first] = type_ref;
  78                         }
  79
  80                         return (rest == "" ? type_ref : type_ref.GetTypeRef (rest, is_valuetype));
  81                 }
  82
  83                 public PEAPI.ClassRef GetType (string full_name, bool is_valuetype)
  84                 {
  85                         PEAPI.ClassRef klass = class_table[full_name] as PEAPI.ClassRef;
  86
  87                         if (klass != null)
  88                                 return klass;
  89
  90                         string name_space, name;
  91                         ExternTable.GetNameAndNamespace (full_name, out name_space, out name);
  92
  93                         if (is_valuetype)
  94                                 klass = (PEAPI.ClassRef) GetExternRef ().AddValueClass (name_space, name);
  95                         else
  96                                 klass = (PEAPI.ClassRef) GetExternRef ().AddClass (name_space, name);
  97
  98                         class_table [full_name] = klass;
  99                         return klass;
 100                 }
 101
 102         }
 103
 104         public class ExternModule : ExternRef {
 105
 106                 public PEAPI.ModuleRef ModuleRef;
 107
 108                 public ExternModule (string name) : base (name)
 109                 {
 110                 }
 111
 112                 public override string FullName {
 113                         get {
 114                                 //'name' field should not contain the [.module ]
 115                                 //as its used for resolving
 116                                 return String.Format ("[.module {0}]", name);
 117                         }
 118                 }
 119
 120                 public override void Resolve (CodeGen codegen)
 121                 {
 122                         if (is_resolved)
 123                                 return;
 124
 125                         ModuleRef = codegen.PEFile.AddExternModule (name);
 126                         if (customattr_list != null)
 127                                 foreach (CustomAttr customattr in customattr_list)
 128                                         customattr.AddTo (codegen, ModuleRef);
 129
 130                         is_resolved = true;
 131                 }
 132
 133
 134                 public override PEAPI.IExternRef GetExternRef ()
 135                 {
 136                         return ModuleRef;
 137                 }
 138         }
 139
 140         public class ExternAssembly : ExternRef, IDeclSecurityTarget {
 141
 142                 public PEAPI.AssemblyRef AssemblyRef;
 143
 144                 private int major, minor, build, revision;
 145                 private byte [] public_key;
 146                 private byte [] public_key_token;
 147                 private string locale;
 148                 private byte [] hash;
 149                 private DeclSecurity decl_sec;
 150                 private AssemblyName asmb_name;
 151                 //flags
 152                 private PEAPI.AssemAttr attr;
 153
 154                 public ExternAssembly (string name, AssemblyName asmb_name, PEAPI.AssemAttr attr) : base (name)
 155                 {
 156                         this.name = name;
 157                         this.asmb_name = asmb_name;
 158                         this.attr = attr;
 159                         major = minor = build = revision = -1;
 160                 }
 161
 162                 public override string FullName {
 163                         get {
 164                                 //'name' field should not contain the []
 165                                 //as its used for resolving
 166                                 return String.Format ("[{0}]", name);
 167                         }
 168                 }
 169
 170                 public AssemblyName AssemblyName {
 171                         get { return asmb_name; }
 172                 }
 173
 174                 public DeclSecurity DeclSecurity {
 175                         get {
 176                                 if (decl_sec == null)
 177                                         decl_sec = new DeclSecurity ();
 178                                 return decl_sec;
 179                         }
 180                 }
 181
 182                 public override void Resolve (CodeGen code_gen)
 183                 {
 184                         if (is_resolved)
 185                                 return;
 186
 187                         AssemblyRef = code_gen.PEFile.AddExternAssembly (name);
 188                         AssemblyRef.AddAssemblyAttr (attr);
 189                         if (major != -1)
 190                                 AssemblyRef.AddVersionInfo (major, minor, build, revision);
 191                         if (public_key != null)
 192                                 AssemblyRef.AddKey (public_key);
 193                         if (public_key_token != null)
 194                                 AssemblyRef.AddKeyToken (public_key_token);
 195                         if (locale != null)
 196                                 AssemblyRef.AddCulture (locale);
 197                         if (hash != null)
 198                                 AssemblyRef.AddHash (hash);
 199
 200                         if (customattr_list != null)
 201                                 foreach (CustomAttr customattr in customattr_list)
 202                                         customattr.AddTo (code_gen, AssemblyRef);
 203
 204                         if (decl_sec != null)
 205                                 decl_sec.AddTo (code_gen, AssemblyRef);
 206
 207                         class_table = new Hashtable ();
 208
 209                         is_resolved = true;
 210                 }
 211
 212                 public override PEAPI.IExternRef GetExternRef ()
 213                 {
 214                         return AssemblyRef;
 215                 }
 216
 217                 public void SetVersion (int major, int minor, int build, int revision)
 218                 {
 219                         this.major = major;
 220                         this.minor = minor;
 221                         this.build = build;
 222                         this.revision = revision;
 223                         asmb_name.Version = new Version (major, minor, build, revision);
 224                 }
 225
 226                 public void SetPublicKey (byte [] public_key)
 227                 {
 228                         this.public_key = public_key;
 229                         asmb_name.SetPublicKey (public_key);
 230                 }
 231
 232                 public void SetPublicKeyToken (byte [] public_key_token)
 233                 {
 234                         this.public_key_token = public_key_token;
 235                         asmb_name.SetPublicKey (public_key);
 236                 }
 237
 238                 public void SetLocale (string locale)
 239                 {
 240                         this.locale = locale;
 241                         //FIXME: is this correct?
 242                         asmb_name.CultureInfo = new CultureInfo (locale);
 243                 }
 244
 245                 public void SetHash (byte [] hash)
 246                 {
 247                         this.hash = hash;
 248                 }
 249
 250         }
 251
 252         public class ExternClass
 253         {
 254             string name;
 255             TypeAttr ta;
 256             string assemblyReference;
 257
 258             public ExternClass (string name, TypeAttr ta, string assemblyReference)
 259             {
 260                 this.name = name;
 261                 this.ta = ta;
 262                 this.assemblyReference = assemblyReference;
 263             }
 264
 265             public void Resolve (CodeGen code_gen, ExternTable table)
 266             {
 267                 var ar = table.GetAssemblyRef (assemblyReference);
 268                 if (ar != null)
 269                     code_gen.PEFile.AddExternClass (name, ta, ar.AssemblyRef);
 270             }
 271         }
 272
 273
 274         public class ExternTable {
 275
 276                 Hashtable assembly_table;
 277                 Hashtable module_table;
 278                 List<ExternClass> class_table;
 279
 280                 bool is_resolved;
 281
 282                 public void AddCorlib ()
 283                 {
 284                         // Add mscorlib
 285                         string mscorlib_name = "mscorlib";
 286                         AssemblyName mscorlib = new AssemblyName ();
 287                         mscorlib.Name = mscorlib_name;
 288                         AddAssembly (mscorlib_name, mscorlib, 0);
 289
 290                         // Also need to alias corlib, normally corlib and
 291                         // mscorlib are used interchangably
 292                         assembly_table["corlib"] = assembly_table["mscorlib"];
 293                 }
 294
 295                 public ExternAssembly AddAssembly (string name, AssemblyName asmb_name, PEAPI.AssemAttr attr)
 296                 {
 297                         ExternAssembly ea = null;
 298
 299                         if (assembly_table == null) {
 300                                 assembly_table = new Hashtable ();
 301                         } else {
 302                                 ea = assembly_table [name] as ExternAssembly;
 303                                 if (ea != null)
 304                                         return ea;
 305                         }
 306
 307                         ea = new ExternAssembly (name, asmb_name, attr);
 308
 309                         assembly_table [name] = ea;
 310
 311                         return ea;
 312                 }
 313
 314                 public ExternModule AddModule (string name)
 315                 {
 316                         ExternModule em = null;
 317
 318                         if (module_table == null) {
 319                                 module_table = new Hashtable ();
 320                         } else {
 321                                 em = module_table [name] as ExternModule;
 322                                 if (em != null)
 323                                         return em;
 324                         }
 325
 326                         em = new ExternModule (name);
 327
 328                         module_table [name] = em;
 329
 330                         return em;
 331                 }
 332
 333                 public void AddClass (string name, TypeAttr ta, string assemblyReference)
 334                 {
 335                     if (class_table == null)
 336                         class_table = new List<ExternClass> ();
 337
 338                     class_table.Add (new ExternClass (name, ta, assemblyReference));
 339                 }
 340
 341                 public void Resolve (CodeGen code_gen)
 342                 {
 343                         if (is_resolved)
 344                                 return;
 345
 346                         if (assembly_table != null)
 347                                 foreach (ExternAssembly ext in assembly_table.Values)
 348                                         ext.Resolve (code_gen);
 349
 350                         if (module_table != null)
 351                             foreach (ExternModule ext in module_table.Values)
 352                                     ext.Resolve (code_gen);
 353
 354                         if (class_table != null)
 355                             foreach (var entry in class_table)
 356                                 entry.Resolve (code_gen, this);
 357
 358                         is_resolved = true;
 359                 }
 360
 361                 public ExternTypeRef GetTypeRef (string asmb_name, string full_name, bool is_valuetype)
 362                 {
 363                         ExternAssembly ext_asmb = null;
 364                         if (assembly_table == null && (asmb_name == "mscorlib" || asmb_name == "corlib")) {
 365                                 /* AddCorlib if mscorlib is being referenced but
 366                                    we haven't encountered a ".assembly 'name'" as yet. */
 367                                 Report.Warning (String.Format ("Reference to undeclared extern assembly '{0}', adding.", asmb_name));
 368                                 AddCorlib ();
 369                         }
 370                         if (assembly_table != null)
 371                                 ext_asmb = assembly_table[asmb_name] as ExternAssembly;
 372
 373                         if (ext_asmb == null) {
 374                                 System.Reflection.AssemblyName asmname = new System.Reflection.AssemblyName ();
 375                                 asmname.Name = asmb_name;
 376
 377                                 Report.Warning (String.Format ("Reference to undeclared extern assembly '{0}', adding.", asmb_name));
 378                                 ext_asmb = AddAssembly (asmb_name, asmname, 0);
 379                         }
 380
 381                         return ext_asmb.GetTypeRef (full_name, is_valuetype);
 382                 }
 383
 384                 public ExternTypeRef GetModuleTypeRef (string mod_name, string full_name, bool is_valuetype)
 385                 {
 386                         ExternModule mod = null;
 387                         if (module_table != null)
 388                                 mod = module_table [mod_name] as ExternModule;
 389
 390                         if (mod == null)
 391                                 Report.Error ("Module " + mod_name + " not defined.");
 392
 393                         return mod.GetTypeRef (full_name, is_valuetype);
 394                 }
 395
 396                 public ExternAssembly GetAssemblyRef (string assembly_name)
 397                 {
 398                         ExternAssembly ass = null;
 399                         if (assembly_table != null)
 400                                 ass = assembly_table [assembly_name] as ExternAssembly;
 401
 402                         if (ass == null)
 403                                 Report.Error ("Assembly " + assembly_name + " is not defined.");
 404
 405                         return ass;
 406                 }
 407
 408                 public static void GetNameAndNamespace (string full_name,
 409                         out string name_space, out string name) {
 410
 411                         int last_dot = full_name.LastIndexOf ('.');
 412
 413                         if (last_dot < 0) {
 414                                 name_space = String.Empty;
 415                                 name = full_name;
 416                                 return;
 417                         }
 418
 419                         name_space = full_name.Substring (0, last_dot);
 420                         name = full_name.Substring (last_dot + 1);
 421                 }
 422
 423         }
 424 }
 425