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