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