tools/cilc/cilc.cs

   1 // cilc -- a CIL-to-C binding generator
   2 // Copyright (C) 2003, 2004, 2005, 2006, 2007 Alp Toker <alp@atoker.com>
   3 // Licensed under the terms of the MIT License
   4
   5 using System;
   6 using System.IO;
   7 using System.Reflection;
   8 using System.Collections;
   9 using System.Diagnostics;
  10 using System.Text.RegularExpressions;
  11
  12 public class cilc
  13 {
  14         private cilc () {}
  15
  16         static CodeWriter C, H, Cindex, Hindex, Hdecls;
  17         static string ns, dllname;
  18         static string cur_type, CurType, CurTypeClass;
  19         static string target_dir;
  20
  21         static ArrayList funcs_done = new ArrayList ();
  22
  23         public static int Main (string[] args)
  24         {
  25                 if (args.Length < 1 || args.Length > 4) {
  26                         Console.WriteLine ("Mono CIL-to-C binding generator");
  27                         Console.WriteLine ("Usage: cilc assembly [target] [pkg ns[,ns...]]");
  28                         return 1;
  29                 }
  30
  31                 ns = "Unnamed";
  32
  33                 RegisterByVal (typeof (uint));
  34                 RegisterByVal (typeof (int));
  35                 RegisterByVal (typeof (IntPtr));
  36                 RegisterByVal (typeof (bool));
  37                 RegisterByVal (typeof (char));
  38                 RegisterByVal (typeof (sbyte));
  39                 RegisterByVal (typeof (byte));
  40                 RegisterByVal (typeof (double));
  41
  42                 if (args.Length == 1) {
  43                         SmartBind (args[0]);
  44                 } else if (args.Length == 2) {
  45                         Generate (args[0], args[1]);
  46                 } else if (args.Length == 3) {
  47                         RegisterPkg (args[1], args[2]);
  48                         SmartBind (args[0]);
  49                 } else if (args.Length == 4) {
  50                         RegisterPkg (args[2], args[3]);
  51                         Generate (args[0], args[1]);
  52                 }
  53
  54                 return 0;
  55         }
  56
  57
  58         public static void SmartBind (string aname)
  59         {
  60                 string tmpdir = Path.GetTempPath () + Path.GetTempFileName ();
  61                 string cwd = Directory.GetCurrentDirectory ();
  62                 if (Directory.Exists (tmpdir) || File.Exists (tmpdir)) {
  63                         Console.WriteLine ("Error: Temporary directory " + tmpdir + " already exists.");
  64                         return;
  65                 }
  66                 Generate (aname, tmpdir);
  67                 Console.Write ("Compiling unmanaged binding");
  68                 RunWithReport ("make", "-C \"" + tmpdir + "\" bundle=true");
  69                 Console.WriteLine ();
  70                 Console.Write ("Installing to current directory");
  71                 RunWithReport ("make", "-C \"" + tmpdir + "\" install prefix=\"" + cwd + "\"");
  72                 Directory.Delete (tmpdir, true);
  73                 Console.WriteLine ();
  74         }
  75
  76         public static string Run (string cmd, string args)
  77         {
  78                 ProcessStartInfo psi = new ProcessStartInfo (cmd, args);
  79                 psi.UseShellExecute = false;
  80                 psi.RedirectStandardInput = true;
  81                 psi.RedirectStandardOutput = true;
  82                 psi.RedirectStandardError = true;
  83
  84                 Process p = Process.Start (psi);
  85
  86                 string line = p.StandardOutput.ReadLine ();
  87
  88                 p.WaitForExit ();
  89
  90                 return line;
  91         }
  92
  93         public static int RunWithReport (string cmd, string args)
  94         {
  95                 ProcessStartInfo psi = new ProcessStartInfo (cmd, args);
  96                 psi.UseShellExecute = false;
  97                 psi.RedirectStandardOutput = true;
  98                 psi.RedirectStandardError = true;
  99
 100                 Process p = Process.Start (psi);
 101
 102                 string line;
 103                 while ((line = p.StandardOutput.ReadLine ()) != null)
 104                         if (verbose)
 105                                 Console.WriteLine (line);
 106                         else
 107                                 Console.Write (".");
 108
 109                 Console.WriteLine ();
 110
 111                 Console.Write (p.StandardError.ReadToEnd ());
 112
 113                 p.WaitForExit ();
 114
 115                 return p.ExitCode;
 116         }
 117
 118         static bool verbose = false;
 119
 120         static string extpkgs = String.Empty;
 121         static string[] extsubpkgs = {};
 122         static string[] extincludes = {};
 123
 124         public static void RegisterPkg (string pkg, string subpkgs)
 125         {
 126                 extpkgs += " " + pkg;
 127
 128                 string cflags = Run ("pkg-config", "--cflags-only-I " + pkg);
 129
 130                 extsubpkgs = subpkgs.Trim ().Split (',');
 131                 extincludes = new string[extsubpkgs.Length];
 132
 133                 for (int i = 0 ; i != extsubpkgs.Length ; i++)
 134                         extincludes[i] =  extsubpkgs[i] + "/" + extsubpkgs[i] + ".h";
 135
 136                 //string cmd = "gcc";
 137                 //string args = "-E " + cflags + " " + includedir + "/" + hname;
 138
 139                 string cppincludes = String.Empty;
 140                 foreach (string include in extincludes)
 141                         cppincludes += " -include " + include;
 142
 143                 string cmd = "cpp";
 144                 string args = cflags + cppincludes + " /dev/null";
 145
 146                 ProcessStartInfo psi = new ProcessStartInfo (cmd, args);
 147                 psi.UseShellExecute = false;
 148                 psi.RedirectStandardOutput = true;
 149                 psi.RedirectStandardError = true;
 150
 151                 Process p = Process.Start (psi);
 152
 153                 string line;
 154
 155                 Regex re_type = new Regex (@"typedef struct (_\w+) (\w+);");
 156                 Regex re_enum = new Regex (@"} (\w+);");
 157
 158                 while ((line = p.StandardOutput.ReadLine ()) != null) {
 159                         line = line.Trim ();
 160
 161                         Match m;
 162
 163                         m = re_type.Match (line);
 164                         if (m.Success) {
 165                                 string G = m.Groups[2].Value;
 166
 167                                 if (!GIsValid (G))
 168                                         continue;
 169
 170                                 if (G.EndsWith ("Class"))
 171                                         continue;
 172
 173                                 RegisterG (G);
 174                                 continue;
 175                         }
 176
 177                         m = re_enum.Match (line);
 178                         if (m.Success) {
 179                                 string G = m.Groups[1].Value;
 180
 181                                 if (!GIsValid (G))
 182                                         continue;
 183
 184                                 RegisterG (G);
 185                                 RegisterByVal (G);
 186                                 continue;
 187                         }
 188                 }
 189
 190                 p.WaitForExit ();
 191                 Console.Write (p.StandardError.ReadToEnd ());
 192                 Console.WriteLine ();
 193         }
 194
 195         static bool GIsValid (string G) {
 196                 foreach (string extsubpkg in extsubpkgs)
 197                         if (G.ToLower ().StartsWith (extsubpkg))
 198                                 return true;
 199
 200                 return false;
 201         }
 202
 203         public static void Generate (string assembly, string target)
 204         {
 205                 target_dir = target + Path.DirectorySeparatorChar;
 206
 207                 if (Directory.Exists (target_dir)) {
 208                         Console.WriteLine ("Error: Target directory " + target_dir + " already exists.");
 209                         return;
 210                 }
 211
 212                 Directory.CreateDirectory (target_dir);
 213
 214                 Assembly a = Assembly.LoadFrom (assembly);
 215
 216                 Console.WriteLine ();
 217                 Console.WriteLine ("References (not followed):");
 218                 foreach (AssemblyName reference in a.GetReferencedAssemblies ())
 219                         Console.WriteLine ("  " + reference.Name);
 220                 Console.WriteLine ();
 221
 222                 dllname = Path.GetFileName (assembly);
 223                 AssemblyGen (a);
 224
 225                 //we might not want to do this in future
 226                 File.Copy (dllname, target_dir + dllname);
 227
 228                 string soname = "lib" + NsToFlat (Path.GetFileNameWithoutExtension (assembly)).ToLower () + ".so";
 229
 230                 //create the static makefile
 231                 StreamWriter makefile = new StreamWriter (File.Create (target_dir + "Makefile"));
 232                 StreamReader sr = new StreamReader (Assembly.GetAssembly (typeof(cilc)).GetManifestResourceStream ("res-Makefile"));
 233
 234                 makefile.Write (sr.ReadToEnd ());
 235                 sr.Close ();
 236                 makefile.Close ();
 237
 238                 //create makefile defs
 239                 CodeWriter makefile_defs = new CodeWriter (target_dir + "defs.mk");
 240                 makefile_defs.Indenter = "\t";
 241                 makefile_defs.WriteLine ("ASSEMBLY = " + assembly);
 242                 makefile_defs.WriteLine ("SONAME = " + soname);
 243                 makefile_defs.WriteLine (@"OBJS = $(shell ls *.c | sed -e 's/\.c/.o/')");
 244
 245                 if (extpkgs != String.Empty) {
 246                         makefile_defs.WriteLine ("EXTRAINCLUDES = $(shell pkg-config --cflags" + extpkgs + ")");
 247                         makefile_defs.WriteLine ("EXTRALIBS = $(shell pkg-config --libs" + extpkgs + ")");
 248                 }
 249                 makefile_defs.Close ();
 250
 251                 Console.WriteLine ();
 252
 253                 //identify hits on types that were registered too late
 254                 foreach (string tn in registered_types) {
 255                         if (registry_hits.Contains (tn)) {
 256                                 Console.WriteLine ("Warning: " + tn + " was incorrectly registered after it was needed instead of before. Consider re-ordering.");
 257                         }
 258                 }
 259
 260                 MakeReport (registry_hits, "Type registry missed hits", 20);
 261                 Console.WriteLine ();
 262                 //TODO: this count is now wrong
 263                 Console.WriteLine (registered_types.Count + " types generated/seen in " + namespaces.Length + " namespaces; " + warnings_ignored + " types ignored");
 264                 Console.WriteLine ();
 265         }
 266
 267         static void MakeReport (Hashtable ctable, string desc, int num)
 268         {
 269                 Console.WriteLine (desc + " (top " + (registry_hits.Count > num ? num : registry_hits.Count) + " of " + registry_hits.Count + "):");
 270                 string[] reg_keys = (string[]) (new ArrayList (ctable.Keys)).ToArray (typeof (string));
 271                 int[] reg_vals = (int[]) (new ArrayList (ctable.Values)).ToArray (typeof (int));
 272                 Array.Sort (reg_vals, reg_keys);
 273
 274                 Array.Reverse (reg_vals);
 275                 Array.Reverse (reg_keys);
 276
 277                 for (int i = 0 ; i != reg_keys.Length && i != num ; i++) {
 278                         Console.WriteLine ("  " + reg_keys[i] + ": " + reg_vals[i]);
 279                 }
 280         }
 281
 282         static int warnings_ignored = 0;
 283
 284         static void AssemblyGen (Assembly a)
 285         {
 286                 Type[] types = a.GetTypes ();
 287                 Hashtable ns_types = new Hashtable ();
 288
 289                 foreach (Type t in types) {
 290                         if (t.IsNotPublic) {
 291                                 //Console.WriteLine ("Ignoring non-public type: " + t.Name);
 292                                 //warnings_ignored++;
 293                                 continue;
 294                         }
 295
 296                         if (!t.IsClass && !t.IsInterface && !t.IsEnum) {
 297                                 //Console.WriteLine ("Ignoring unrecognised type: " + t.Name);
 298                                 warnings_ignored++;
 299                                 continue;
 300                         }
 301
 302                         RegisterType (t);
 303
 304                         if (t.IsEnum)
 305                                 RegisterByVal (t);
 306
 307                         string tns = t.Namespace == null ? String.Empty : t.Namespace;
 308
 309                         if (!ns_types.Contains (tns))
 310                                 ns_types[tns] = new ArrayList ();
 311
 312                         ((ArrayList) ns_types[tns]).Add (t);
 313                 }
 314
 315                 namespaces = (string[]) (new ArrayList (ns_types.Keys)).ToArray (typeof (string));
 316
 317                 foreach (DictionaryEntry de in ns_types)
 318                         NamespaceGen ((string) de.Key, (Type[]) ((ArrayList) de.Value).ToArray (typeof (Type)));
 319         }
 320
 321         static string[] namespaces;
 322
 323         static void NamespaceGen (string given_ns, Type[] types)
 324         {
 325                 //ns = types[0].Namespace;
 326                 ns = given_ns;
 327
 328                 Hindex = new CodeWriter (target_dir + NsToFlat (ns).ToLower () + ".h");
 329                 Hdecls = new CodeWriter (target_dir + NsToFlat (ns).ToLower () + "types.h");
 330                 Cindex = new CodeWriter (target_dir + NsToFlat (ns).ToLower () + ".c");
 331
 332                 string Hindex_id = "__" + NsToFlat (ns).ToUpper () + "_H__";
 333                 Hindex.WriteLine ("#ifndef " + Hindex_id);
 334                 Hindex.WriteLine ("#define " + Hindex_id);
 335                 Hindex.WriteLine ();
 336
 337                 string Hdecls_id = "__" + NsToFlat (ns).ToUpper () + "_DECLS_H__";
 338                 Hdecls.WriteLine ("#ifndef " + Hdecls_id);
 339                 Hdecls.WriteLine ("#define " + Hdecls_id);
 340                 Hdecls.WriteLine ();
 341
 342                 Cindex.WriteLine ("#include <glib.h>");
 343                 Cindex.WriteLine ("#include <glib-object.h>");
 344                 Cindex.WriteLine ("#include <mono/jit/jit.h>");
 345                 Cindex.WriteLine ();
 346                 Cindex.WriteLine ("#include <mono/metadata/object.h>");
 347                 Cindex.WriteLine ("#include <mono/metadata/debug-helpers.h>");
 348                 Cindex.WriteLine ("#include <mono/metadata/appdomain.h>");
 349                 Cindex.WriteLine ();
 350                 Cindex.WriteLine ("#ifdef CILC_BUNDLE");
 351                 Cindex.WriteLine ("#include \"bundle.h\"");
 352                 Cindex.WriteLine ("#endif");
 353                 Cindex.WriteLine ();
 354
 355                 Cindex.WriteLine ("MonoDomain *" + NsToC (ns) + "_get_mono_domain (void)");
 356                 Cindex.WriteLine ("{");
 357                 Cindex.WriteLine ("static MonoDomain *domain = NULL;");
 358                 Cindex.WriteLine ("if (domain != NULL) return domain;");
 359                 Cindex.WriteLine ("mono_config_parse (NULL);");
 360                 Cindex.WriteLine ("domain = mono_jit_init (\"cilc\");");
 361                 Cindex.WriteLine ();
 362                 Cindex.WriteLine ("#ifdef CILC_BUNDLE");
 363                 Cindex.WriteLine ("mono_register_bundled_assemblies (bundled);");
 364                 Cindex.WriteLine ("#endif");
 365                 Cindex.WriteLine ();
 366
 367                 Cindex.WriteLine ("return domain;");
 368                 Cindex.WriteLine ("}");
 369                 Cindex.WriteLine ();
 370
 371                 Cindex.WriteLine ("MonoAssembly *" + NsToC (ns) + "_get_mono_assembly (void)");
 372                 Cindex.WriteLine ("{");
 373                 Cindex.WriteLine ("static MonoAssembly *assembly = NULL;");
 374                 Cindex.WriteLine ("if (assembly != NULL) return assembly;");
 375                 Cindex.WriteLine ("assembly = mono_domain_assembly_open (" + NsToC (ns) + "_get_mono_domain (), \"" + dllname + "\");");
 376                 Cindex.WriteLine ();
 377
 378                 Cindex.WriteLine ("return assembly;");
 379                 Cindex.WriteLine ("}");
 380                 Cindex.WriteLine ();
 381
 382
 383                 Cindex.WriteLine ("MonoObject *" + NsToC (ns) + "_cilc_glib_gobject_get_mobject (GObject *_handle)");
 384                 Cindex.WriteLine ("{");
 385                 //FIXME: instantiate monobject if it doesn't exist
 386                 Cindex.WriteLine ("return g_object_get_data (G_OBJECT (" + "_handle" + "), \"mono-object\");");
 387                 Cindex.WriteLine ("}");
 388
 389                 Cindex.WriteLine ("gpointer " + NsToC (ns) + "_cilc_glib_mobject_get_gobject (MonoObject *_mono_object)");
 390                 Cindex.WriteLine ("{");
 391                 Cindex.WriteLine ("static MonoAssembly *_mono_assembly = NULL;");
 392                 Cindex.WriteLine ("static MonoMethod *_mono_method = NULL;");
 393                 Cindex.WriteLine ("static MonoClass *_mono_class = NULL;");
 394                 Cindex.WriteLine ("gpointer *retval;");
 395                 Cindex.WriteLine ();
 396                 Cindex.WriteLine ("if (_mono_assembly == NULL) {");
 397                 Cindex.WriteLine ("_mono_assembly = mono_domain_assembly_open (" + NsToC (ns) + "_get_mono_domain (), \"" + "glib-sharp" + "\");");
 398                 Cindex.WriteLine ("}");
 399                 Cindex.WriteLine ("if (_mono_class == NULL) {");
 400                 Cindex.WriteLine ("_mono_class = (MonoClass*) mono_class_from_name ((MonoImage*) mono_assembly_get_image (_mono_assembly), \"GLib\", \"Object\");");
 401                 Cindex.WriteLine ("}");
 402                 Cindex.WriteLine ("if (_mono_method == NULL) {");
 403                 Cindex.WriteLine ("MonoMethodDesc *_mono_method_desc = mono_method_desc_new (\":get_Handle()\", FALSE);");
 404                 Cindex.WriteLine ("_mono_method = mono_method_desc_search_in_class (_mono_method_desc, _mono_class);");
 405                 Cindex.WriteLine ("}");
 406                 Cindex.WriteLine ();
 407                 Cindex.WriteLine ("retval = (gpointer *) mono_object_unbox (mono_runtime_invoke (_mono_method, _mono_object, NULL, NULL));");
 408                 Cindex.WriteLine ("return (gpointer ) *retval;");
 409                 Cindex.WriteLine ("}");
 410                 Cindex.WriteLine ();
 411
 412
 413                 Console.Write ("Generating sources in " + ns);
 414                 foreach (Type t in types) {
 415                         TypeGen (t);
 416                         Console.Write (".");
 417                 }
 418
 419                 Console.WriteLine ();
 420
 421                 Hindex.WriteLine ();
 422                 Hindex.WriteLine ("#endif /* " + Hindex_id + " */");
 423
 424                 Hdecls.WriteLine ();
 425                 Hdecls.WriteLine ("#endif /* " + Hdecls_id + " */");
 426
 427                 Cindex.Close ();
 428                 Hindex.Close ();
 429                 Hdecls.Close ();
 430         }
 431
 432         static void TypeGen (Type t)
 433         {
 434                 //TODO: we only handle ordinary classes for now
 435                 /*
 436                          else if (t.IsSubclassOf (typeof (Delegate))) {
 437                          Console.WriteLine ("Ignoring delegate: " + t.Name);
 438                          return;
 439                          }
 440                          */
 441
 442                 cur_type = NsToC (ns) + "_" + CamelToC (t.Name);
 443                 //CurType = NsToFlat (ns) + t.Name;
 444                 CurType = CsTypeToG (t);
 445                 if (t.IsInterface)
 446                         CurTypeClass = GToGI (CurType);
 447                 else
 448                         CurTypeClass = GToGC (CurType);
 449
 450                 //ns = t.Namespace;
 451                 string fname = NsToFlat (ns).ToLower () + t.Name.ToLower ();
 452                 C = new CodeWriter (target_dir + fname + ".c");
 453                 H = new CodeWriter (target_dir + fname + ".h");
 454                 Hindex.WriteLine ("#include <" + fname + ".h" + ">");
 455
 456
 457                 string H_id = "__" + NsToFlat (ns).ToUpper () + "_" + t.Name.ToUpper () + "_H__";
 458                 H.WriteLine ("#ifndef " + H_id);
 459                 H.WriteLine ("#define " + H_id);
 460                 H.WriteLine ();
 461
 462                 H.WriteLine ("#include <glib.h>");
 463                 H.WriteLine ("#include <glib-object.h>");
 464
 465                 foreach (string include in extincludes)
 466                         H.WriteLine ("#include <" + include + ">");
 467
 468                 H.WriteLine ();
 469
 470                 if (t.BaseType != null && IsRegistered (t.BaseType) && !IsExternal (t.BaseType))
 471                         H.WriteLine ("#include \"" + NsToFlat (t.BaseType.Namespace).ToLower () + t.BaseType.Name.ToLower () + ".h\"");
 472
 473                 foreach (string ext_ns in namespaces)
 474                         H.WriteLine ("#include \"" + NsToFlat (ext_ns).ToLower () + "types.h\"");
 475
 476                 H.WriteLine ();
 477
 478                 H.WriteLine ("#ifdef __cplusplus");
 479                 H.WriteLine ("extern \"C\" {", false);
 480                 H.WriteLine ("#endif /* __cplusplus */");
 481                 H.WriteLine ();
 482
 483                 C.WriteLine ("#include \"" + fname + ".h" + "\"");
 484
 485                 Type[] ifaces;
 486                 ifaces = t.GetInterfaces ();
 487                 foreach (Type iface in ifaces) {
 488                         if (!IsRegistered (iface))
 489                                 continue;
 490
 491                         string iface_fname = NsToFlat (ns).ToLower () + iface.Name.ToLower ();
 492                         C.WriteLine ("#include \"" + iface_fname + ".h" + "\"");
 493                 }
 494
 495                 C.WriteLine ("#include <mono/metadata/object.h>");
 496                 C.WriteLine ("#include <mono/metadata/debug-helpers.h>");
 497                 C.WriteLine ("#include <mono/metadata/appdomain.h>");
 498                 C.WriteLine ();
 499
 500                 if (t.IsClass)
 501                         ClassGen (t);
 502                 else if (t.IsInterface)
 503                         ClassGen (t);
 504                 else if (t.IsEnum)
 505                         EnumGen (t);
 506
 507                 H.WriteLine ();
 508                 H.WriteLine ("#ifdef __cplusplus");
 509                 H.WriteLine ("}", false);
 510                 H.WriteLine ("#endif /* __cplusplus */");
 511                 H.WriteLine ();
 512
 513                 H.WriteLine ("#endif /* " + H_id + " */");
 514
 515                 C.Close ();
 516                 H.Close ();
 517         }
 518
 519         static void EnumGen (Type t)
 520         {
 521                 //TODO: we needn't split out each enum into its own file
 522
 523                 string gname = CsTypeToG (t);
 524
 525                 Hdecls.WriteLine ("typedef enum");
 526                 Hdecls.WriteLine ("{");
 527                 C.WriteLine ("GType " + cur_type + "_get_type (void)", H, ";");
 528                 C.WriteLine ("{");
 529                 C.WriteLine ("static GType etype = 0;");
 530                 C.WriteLine ("if (etype == 0) {");
 531                 C.WriteLine ("static const GEnumValue values[] = {");
 532                 foreach (FieldInfo fi in t.GetFields (BindingFlags.Static|BindingFlags.Public)) {
 533                         string finame = (cur_type + "_" + CamelToC (fi.Name)).ToUpper ();
 534                         Hdecls.WriteLine (finame + ",");
 535                         C.WriteLine ("{ " + finame + ", \"" + finame + "\", \"" + CamelToC (fi.Name).Replace ("_", "-") + "\" },");
 536                 }
 537                 Hdecls.WriteLine ("} " + gname + ";");
 538                 Hdecls.WriteLine ();
 539                 C.WriteLine ("{ 0, NULL, NULL }");
 540                 C.WriteLine ("};");
 541                 C.WriteLine ("etype = g_enum_register_static (\"" + gname + "\", values);");
 542                 C.WriteLine ("}");
 543                 C.WriteLine ("return etype;");
 544                 C.WriteLine ("}");
 545         }
 546
 547         static void ClassGen (Type t)
 548         {
 549                 //TODO: what flags do we want for GetEvents and GetConstructors?
 550
 551                 //events as signals
 552                 EventInfo[] events;
 553                 events = t.GetEvents (BindingFlags.Public|BindingFlags.Instance|BindingFlags.DeclaredOnly);
 554
 555                 //events as signals
 556                 MethodInfo[] methods;
 557                 methods = t.GetMethods (BindingFlags.Public|BindingFlags.Instance|BindingFlags.DeclaredOnly);
 558
 559                 Type[] ifaces;
 560                 ifaces = t.GetInterfaces ();
 561
 562                 H.WriteLine ("G_BEGIN_DECLS");
 563                 H.WriteLine ();
 564
 565                 {
 566                         string NS = NsToC (ns).ToUpper ();
 567                         string T = CamelToC (t.Name).ToUpper ();
 568                         string NST = NS + "_" + T;
 569                         string NSTT = NS + "_TYPE_" + T;
 570
 571                         H.WriteLine ("#define " + NSTT + " (" + cur_type + "_get_type ())");
 572                         H.WriteLine ("#define " + NST + "(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), " + NSTT + ", " + CurType + "))");
 573                         if (!t.IsInterface)
 574                                 H.WriteLine ("#define " + NST + "_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), " + NSTT + ", " + CurTypeClass + "))");
 575                         H.WriteLine ("#define " + NS + "_IS_" + T + "(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), " + NSTT + "))");
 576                         if (!t.IsInterface)
 577                                 H.WriteLine ("#define " + NS + "_IS_" + T + "_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), " + NSTT + "))");
 578                         if (t.IsInterface)
 579                                 H.WriteLine ("#define " + NST + "_GET_INTERFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), " + NSTT + ", " + CurTypeClass + "))");
 580                         else
 581                                 H.WriteLine ("#define " + NST + "_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), " + NSTT + ", " + CurTypeClass + "))");
 582                 }
 583
 584                 if (!C.IsDuplicate) {
 585                         Hdecls.WriteLine ("typedef struct _" + CurType + " " + CurType + ";");
 586                         Hdecls.WriteLine ("typedef struct _" + CurTypeClass + " " + CurTypeClass + ";");
 587                         Hdecls.WriteLine ();
 588                 }
 589
 590                 H.WriteLine ();
 591
 592                 string ParentName;
 593                 string ParentNameClass;
 594
 595                 if (t.BaseType != null) {
 596                         ParentName = CsTypeToG (t.BaseType);
 597                         ParentNameClass = GToGC (ParentName);
 598                 } else {
 599                         ParentName = "GType";
 600                         if (t.IsInterface)
 601                                 ParentNameClass = ParentName + "Interface";
 602                         else
 603                                 ParentNameClass = ParentName + "Class";
 604                 }
 605
 606                 //H.WriteLine ("typedef struct _" + CurType + " " + CurType + ";");
 607
 608                 //H.WriteLine ();
 609                 //H.WriteLine ("typedef struct _" + CurType + "Class " + CurType + "Class;");
 610                 if (!t.IsInterface) {
 611                         H.WriteLine ("typedef struct _" + CurType + "Private " + CurType + "Private;");
 612                         H.WriteLine ();
 613                         H.WriteLine ("struct _" + CurType);
 614                         H.WriteLine ("{");
 615
 616                         H.WriteLine (ParentName + " parent_instance;");
 617                         H.WriteLine (CurType + "Private *priv;");
 618                         H.WriteLine ("};");
 619                         H.WriteLine ();
 620                 }
 621
 622                 H.WriteLine ("struct _" + CurTypeClass);
 623                 H.WriteLine ("{");
 624                 //H.WriteLine (ParentNameClass + " parent_class;");
 625                 H.WriteLine (ParentNameClass + " parent;");
 626                 if (t.BaseType != null)
 627                         H.WriteLine ("/* inherits " + t.BaseType.Namespace + " " + t.BaseType.Name + " */");
 628
 629                 if (events.Length != 0) {
 630                         H.WriteLine ();
 631                         H.WriteLine ("/* signals */");
 632
 633                         //FIXME: event arguments
 634                         foreach (EventInfo ei in events)
 635                                 H.WriteLine ("void (* " + CamelToC (ei.Name) + ") (" + CurType + " *thiz" + ");");
 636                 }
 637
 638                 if (t.IsInterface) {
 639                         if (methods.Length != 0) {
 640                                 H.WriteLine ();
 641                                 H.WriteLine ("/* vtable */");
 642
 643                                 //FIXME: method arguments
 644                                 //string funcname = ToValidFuncName (CamelToC (imi.Name));
 645                                 foreach (MethodInfo mi in methods)
 646                                         H.WriteLine ("void (* " + CamelToC (mi.Name) + ") (" + CurType + " *thiz" + ");");
 647                         }
 648                 }
 649
 650                 H.WriteLine ("};");
 651                 H.WriteLine ();
 652
 653                 //generate c file
 654
 655                 //private struct
 656                 C.WriteLine ("struct _" + CurType + "Private");
 657                 C.WriteLine ("{");
 658                 C.WriteLine ("MonoObject *mono_object;");
 659                 C.WriteLine ("};");
 660
 661                 C.WriteLine ();
 662
 663                 //events
 664                 if (events.Length != 0) {
 665                         C.WriteLine ("enum {");
 666
 667                         foreach (EventInfo ei in events)
 668                                 C.WriteLine (CamelToC (ei.Name).ToUpper () + ",");
 669
 670                         C.WriteLine ("LAST_SIGNAL");
 671                         C.WriteLine ("};");
 672                         C.WriteLine ();
 673                 }
 674
 675                 C.WriteLine ("static gpointer parent_class;");
 676
 677                 if (events.Length == 0)
 678                         C.WriteLine ("static guint signals[0];");
 679                 else
 680                         C.WriteLine ("static guint signals[LAST_SIGNAL] = { 0 };");
 681                 C.WriteLine ();
 682
 683                 C.WriteLine ("static MonoClass *" + cur_type + "_get_mono_class (void)");
 684                 C.WriteLine ("{");
 685                 C.WriteLine ("MonoAssembly *assembly;");
 686                 C.WriteLine ("static MonoClass *class = NULL;");
 687                 C.WriteLine ("if (class != NULL) return class;");
 688
 689                 C.WriteLine ("assembly = (MonoAssembly*) " + NsToC (ns) + "_get_mono_assembly ();");
 690                 C.WriteLine ("class = (MonoClass*) mono_class_from_name ((MonoImage*) mono_assembly_get_image (assembly)" + ", \"" + ns + "\", \"" + t.Name + "\");");
 691
 692                 C.WriteLine ("mono_class_init (class);");
 693                 C.WriteLine ();
 694
 695                 C.WriteLine ("return class;");
 696                 C.WriteLine ("}");
 697
 698                 C.WriteLine ();
 699
 700                 wrap_gobject = TypeIsGObject (t);
 701
 702                 //TODO: generate thin wrappers for interfaces
 703
 704                 //generate constructors
 705                 ConstructorInfo[] constructors;
 706                 constructors = t.GetConstructors ();
 707                 foreach (ConstructorInfo c in constructors)
 708                         ConstructorGen (c, t);
 709
 710                 //generate static methods
 711                 //MethodInfo[] methods;
 712                 methods = t.GetMethods (BindingFlags.Public|BindingFlags.Static|BindingFlags.DeclaredOnly);
 713                 foreach (MethodInfo m in methods)
 714                         MethodGen (m, t);
 715
 716                 //generate instance methods
 717                 methods = t.GetMethods (BindingFlags.Public|BindingFlags.Instance|BindingFlags.DeclaredOnly);
 718                 foreach (MethodInfo m in methods)
 719                         MethodGen (m, t);
 720
 721                 C.WriteLine ();
 722
 723                 if (t.IsClass) {
 724                         //generate the GObject init function
 725                         C.WriteLine ("static void " + cur_type + "_init (" + CurType + " *thiz" + ")");
 726                         C.WriteLine ("{");
 727                         C.WriteLine ("thiz->priv = g_new0 (" + CurType + "Private, 1);");
 728                         C.WriteLine ("}");
 729
 730                         C.WriteLine ();
 731
 732                         //generate the GObject class init function
 733                         C.WriteLine ("static void " + cur_type + "_class_init (" + CurTypeClass + " *klass" + ")");
 734                         C.WriteLine ("{");
 735
 736                         C.WriteLine ("GObjectClass *object_class = G_OBJECT_CLASS (klass);");
 737                         C.WriteLine ("parent_class = g_type_class_peek_parent (klass);");
 738                         //C.WriteLine ("object_class->finalize = _finalize;");
 739
 740                         foreach (EventInfo ei in events)
 741                                 EventGen (ei, t);
 742
 743                         C.WriteLine ("}");
 744
 745                         C.WriteLine ();
 746                 }
 747
 748                 if (ifaces.Length != 0) {
 749                         foreach (Type iface in ifaces) {
 750                                 if (!IsRegistered (iface))
 751                                         continue;
 752
 753                                 C.WriteLine ("static void " + NsToC (iface.Namespace) + "_" + CamelToC (iface.Name) + "_interface_init (" + GToGI (CsTypeToG (iface)) + " *iface" + ")");
 754                                 C.WriteLine ("{");
 755                                 foreach (MethodInfo imi in iface.GetMethods (BindingFlags.Public|BindingFlags.Instance|BindingFlags.DeclaredOnly)) {
 756                                         string funcname = ToValidFuncName (CamelToC (imi.Name));
 757                                         C.WriteLine ("iface->" + funcname + " = " + cur_type + "_" + funcname + ";");
 758                                 }
 759                                 //TODO: properties etc.
 760                                 C.WriteLine ("}");
 761                                 C.WriteLine ();
 762                         }
 763
 764                 }
 765
 766                 //generate the GObject get_type function
 767                 C.WriteLine ("GType " + cur_type + "_get_type (void)", H, ";");
 768                 C.WriteLine ("{");
 769                 C.WriteLine ("static GType object_type = 0;");
 770                 C.WriteLine ("g_type_init ();");
 771                 C.WriteLine ();
 772                 C.WriteLine ("if (object_type) return object_type;");
 773                 C.WriteLine ();
 774                 C.WriteLine ("static const GTypeInfo object_info =");
 775                 C.WriteLine ("{");
 776                 C.WriteLine ("sizeof (" + CurTypeClass + "),");
 777                 C.WriteLine ("(GBaseInitFunc) NULL, /* base_init */");
 778                 C.WriteLine ("(GBaseFinalizeFunc) NULL, /* base_finalize */");
 779                 if (t.IsClass)
 780                         C.WriteLine ("(GClassInitFunc) " + cur_type + "_class_init, /* class_init */");
 781                 else
 782                         C.WriteLine ("NULL, /* class_init */");
 783                 C.WriteLine ("NULL, /* class_finalize */");
 784                 C.WriteLine ("NULL, /* class_data */");
 785                 if (t.IsClass)
 786                         C.WriteLine ("sizeof (" + CurType + "),");
 787                 else
 788                         C.WriteLine ("0,");
 789                 C.WriteLine ("0, /* n_preallocs */");
 790                 if (t.IsClass)
 791                         C.WriteLine ("(GInstanceInitFunc) " + cur_type + "_init, /* instance_init */");
 792                 else
 793                         C.WriteLine ("NULL, /* instance_init */");
 794                 C.WriteLine ("};");
 795                 C.WriteLine ();
 796
 797                 foreach (Type iface in ifaces) {
 798                         if (!IsRegistered (iface))
 799                                 continue;
 800
 801                         C.WriteLine ("static const GInterfaceInfo " + CamelToC (iface.Namespace) + "_" + CamelToC (iface.Name) + "_info" + " =");
 802                         C.WriteLine ("{");
 803                         C.WriteLine ("(GInterfaceInitFunc) " + NsToC (iface.Namespace) + "_" + CamelToC (iface.Name) + "_interface_init, /* interface_init */");
 804                         C.WriteLine ("(GInterfaceFinalizeFunc) NULL, /* interface_finalize */");
 805                         C.WriteLine ("NULL, /* interface_data */");
 806                         C.WriteLine ("};");
 807                         C.WriteLine ();
 808                 }
 809
 810                 if (t.BaseType != null) {
 811                 string parent_type = "G_TYPE_OBJECT";
 812                 if (IsRegistered (t.BaseType))
 813                         parent_type = NsToC (t.BaseType.Namespace).ToUpper () + "_TYPE_" + CamelToC (t.BaseType.Name).ToUpper ();
 814
 815                 C.WriteLine ("object_type = g_type_register_static (" + parent_type + ", \"" + CurType + "\", &object_info, 0);");
 816                 }
 817
 818                 foreach (Type iface in ifaces) {
 819                         if (!IsRegistered (iface))
 820                                 continue;
 821
 822                         C.WriteLine ("g_type_add_interface_static (object_type, " + NsToC (iface.Namespace).ToUpper () + "_TYPE_" + CamelToC (iface.Name).ToUpper () + ", &" + NsToC (iface.Namespace) + "_" + CamelToC (iface.Name) + "_info" + ");");
 823                 }
 824                 C.WriteLine ();
 825                 C.WriteLine ("return object_type;");
 826                 C.WriteLine ("}");
 827
 828                 H.WriteLine ();
 829                 H.WriteLine ("G_END_DECLS");
 830         }
 831
 832         static bool TypeIsGObject (Type t)
 833         {
 834                 if (t == null)
 835                         return false;
 836
 837                 if (t.FullName == "GLib.Object")
 838                         return true;
 839
 840                 return TypeIsGObject (t.BaseType);
 841         }
 842
 843
 844         //FIXME: clean up this mess with hits as the type registry uses strings
 845
 846         static ArrayList registered_types = new ArrayList ();
 847         static ArrayList byval_types = new ArrayList ();
 848         static ArrayList external_types = new ArrayList ();
 849         static Hashtable registry_hits = new Hashtable ();
 850
 851         static bool IsRegisteredByVal (Type t)
 852         {
 853                 return byval_types.Contains (CsTypeToFlat (t));
 854         }
 855
 856         static bool IsExternal (Type t)
 857         {
 858                 return external_types.Contains (CsTypeToFlat (t));
 859         }
 860
 861         static void RegisterByVal (string tn)
 862         {
 863                 //TODO: warn on dupes
 864                 byval_types.Add (tn);
 865         }
 866
 867         static void RegisterByVal (Type t)
 868         {
 869                 RegisterByVal (CsTypeToFlat (t));
 870         }
 871
 872         static bool IsRegistered (String tn)
 873         {
 874                 return registered_types.Contains (tn);
 875         }
 876
 877         static bool IsRegistered (Type t)
 878         {
 879                 return IsRegistered (t, true);
 880         }
 881
 882         static bool IsRegistered (Type t, bool log_hits)
 883         {
 884                 return IsRegistered (CsTypeToFlat (t), true);
 885         }
 886
 887         static bool IsRegistered (string tn, bool log_hits)
 888         {
 889                 //bool isreg = registered_types.Contains (t);
 890                 bool isreg = registered_types.Contains (tn);
 891
 892                 if (!isreg && log_hits) {
 893                         HitRegistry (tn);
 894                 }
 895
 896                 return isreg;
 897         }
 898
 899         static void HitRegistry (string tn)
 900         {
 901                 //FIXME: ignore handled primitive types here
 902
 903                 if (!registry_hits.Contains (tn)) {
 904                         int count = 0;
 905                         registry_hits[tn] = count;
 906                 }
 907
 908                 registry_hits[tn] = (int) registry_hits[tn] + 1;
 909         }
 910
 911         static bool RegisterG (string G)
 912         {
 913                 if (IsRegistered (G, false)) {
 914                         Console.WriteLine ("Warning: unmanaged type " + G + " already registered! Can't re-register.");
 915                         return false;
 916                 }
 917
 918                 external_types.Add (G);
 919                 registered_types.Add (G);
 920                 return true;
 921         }
 922
 923         static string NewG (string G)
 924         {
 925                 if (IsRegistered (G, false))
 926                 {
 927                         Console.WriteLine ("Warning: type " + G + " already registered! Appending 'Extra' and trying again");
 928                         Console.WriteLine ();
 929                         return NewG (G + "Extra"); //FIXME: handle this properly
 930                 }
 931
 932                 registered_types.Add (G);
 933                 return (G);
 934         }
 935
 936         static string CsTypeToFlat (Type t) //TODO: use this everywhere
 937         {
 938                 //TODO: check registry to see if t.Name's name has been changed during NewG.
 939                 //if it's not in the registry, continue as usual
 940
 941                 return NsToFlat (t.Namespace) + t.Name;
 942         }
 943
 944         static void RegisterType (Type t)
 945         {
 946                 NewG (CsTypeToFlat (t));
 947         }
 948
 949         /*
 950         static string NewG (Type t)
 951         {
 952                 return NewG (CsTypeToFlat (t));
 953         }
 954         */
 955
 956         static string CsTypeToG (Type t)
 957         {
 958                 if (IsRegistered (t))
 959                         return CsTypeToFlat (t);
 960
 961                 return "GObject";
 962         }
 963
 964         static string GToGI (string G)
 965         {
 966                 string possGC = G + "Iface";
 967                 //TODO: conflict resolution
 968
 969                 return possGC;
 970         }
 971
 972         //static string CsTypeToGC (String tn)
 973         static string GToGC (string G)
 974         {
 975                 string possGC = G + "Class";
 976
 977                 if (IsRegistered (possGC))
 978                         return GToGC (G + "Object");
 979                 else
 980                         return possGC;
 981         }
 982
 983         static string CsTypeToC (Type t)
 984         {
 985                 //TODO: use this method everywhere
 986
 987                 switch (t.FullName)
 988                 {
 989                         case "System.String":
 990                                 return "const gchar *";
 991
 992                         case "System.Int32":
 993                                 return "gint ";
 994
 995                         case "System.UInt32":
 996                                 return "guint ";
 997
 998                         case "System.Boolean":
 999                                 return "gboolean ";
1000
1001                         case "System.IntPtr":
1002                                 return "gpointer ";
1003
1004                         case "System.Char":
1005                                 return "guint16 ";
1006
1007                         case "System.SByte":
1008                                 return "gint8 ";
1009
1010                         case "System.Byte":
1011                                 return "guint8 ";
1012
1013                         case "System.Double":
1014                                 return "gdouble ";
1015
1016                         //questionable
1017                         case "System.EventHandler":
1018                                 case "System.MulticastDelegate":
1019                                 return "GCallback ";
1020                 }
1021
1022                 if (IsRegistered (t) && IsRegisteredByVal (t))
1023                         return CsTypeToFlat (t) + " ";
1024
1025                 if (t == typeof (void))
1026                         return "void ";
1027
1028                 return CsTypeToG (t) + " *";
1029         }
1030
1031         static void EventGen (EventInfo ei, Type t)
1032         {
1033                 //Console.WriteLine ("TODO: event: " + ei.Name);
1034                 //Console.WriteLine ("\t" + CamelToC (ei.Name));
1035                 string name = CamelToC (ei.Name);
1036
1037                 C.WriteLine ();
1038                 C.WriteLine ("signals[" + name.ToUpper () + "] = g_signal_new (");
1039                 C.WriteLine ("\"" + name + "\",");
1040                 C.WriteLine ("G_OBJECT_CLASS_TYPE (object_class),");
1041                 C.WriteLine ("G_SIGNAL_RUN_LAST,");
1042                 C.WriteLine ("G_STRUCT_OFFSET (" + CurTypeClass + ", " + name + "),");
1043                 C.WriteLine ("NULL, NULL,");
1044                 C.WriteLine ("g_cclosure_marshal_VOID__VOID,");
1045                 C.WriteLine ("G_TYPE_NONE, 0");
1046                 C.WriteLine (");");
1047         }
1048
1049         static void ConstructorGen (ConstructorInfo c, Type t)
1050         {
1051                 ParameterInfo[] parameters = c.GetParameters ();
1052                 FunctionGen (parameters, (MethodBase) c, t, null, true);
1053         }
1054
1055         static void MethodGen (MethodInfo m, Type t)
1056         {
1057                 ParameterInfo[] parameters = m.GetParameters ();
1058                 FunctionGen (parameters, (MethodBase) m, t, m.ReturnType, false);
1059         }
1060
1061         static readonly string[] keywords = {"auto", "break", "case", "char", "const", "continue", "default", "do", "double", "else", "enum", "extern", "float", "for", "goto", "if", "int", "long", "register", "return", "short", "signed", "sizeof", "static", "struct", "switch", "typedef", "union", "unsigned", "void", "volatile", "while"};
1062
1063         static string KeywordAvoid (string s)
1064         {
1065                 if (Array.IndexOf (keywords, s.ToLower ()) != -1)
1066                         return KeywordAvoid ("_" + s);
1067
1068                 return s;
1069         }
1070
1071         static string ToValidFuncName (string name)
1072         {
1073                 //avoid generated function name conflicts with internal functions
1074
1075                 switch (name.ToLower ()) {
1076                         case "init":
1077                                 return "initialize";
1078                         case "class_init":
1079                                 return "class_initialize";
1080                         case "get_type":
1081                                 return "retrieve_type";
1082                         default:
1083                                 return name;
1084                 }
1085         }
1086
1087         static bool wrap_gobject = false;
1088
1089         static void FunctionGen (ParameterInfo[] parameters, MethodBase m, Type t, Type ret_type, bool ctor)
1090         {
1091                 string myargs = String.Empty;
1092                 bool has_return = !ctor && ret_type != null && ret_type != typeof (void);
1093                 bool stat = m.IsStatic;
1094
1095                 string mytype, rettype;
1096
1097                 mytype = CurType + " *";
1098
1099                 if (ctor) {
1100                         has_return = true;
1101                         rettype = mytype;
1102                         stat = true;
1103                 } else
1104                         rettype = CsTypeToC (ret_type);
1105
1106                 string params_arg = "NULL";
1107                 if (parameters.Length != 0)
1108                         params_arg = "_mono_params";
1109
1110                 string instance = "thiz";
1111                 string mono_obj = "NULL";
1112
1113                 if (ctor || !stat)
1114                         mono_obj = "_mono_object";
1115
1116                 //if (ctor || !stat)
1117                 //      mono_obj = instance + "->priv->mono_object";
1118
1119                 if (!stat) {
1120                         myargs = mytype + instance;
1121                         if (parameters.Length > 0) myargs += ", ";
1122                 }
1123
1124                 string myname;
1125
1126                 myname = cur_type + "_";
1127                 if (ctor)
1128                         myname += "new";
1129                 else
1130                         myname += ToValidFuncName (CamelToC (m.Name));
1131
1132                 //handle overloaded methods
1133                 //TODO: generate an alias function for the default ctor etc.
1134
1135                 //TODO: how do we choose the default ctor/method overload? perhaps the
1136                 //first/shortest, but we need scope for this
1137                 //perhaps use DefaultMemberAttribute, Type.GetDefaultMembers
1138
1139                 if (funcs_done.Contains (myname)) {
1140                         for (int i = 0 ; i < parameters.Length ; i++) {
1141                                 ParameterInfo p = parameters[i];
1142
1143                                 if (i == 0)
1144                                         myname += "_with_";
1145                                 else
1146                                         myname += "_and_";
1147
1148                                 myname += KeywordAvoid (p.Name);
1149                         }
1150                 }
1151
1152                 if (funcs_done.Contains (myname))
1153                         return;
1154
1155                 funcs_done.Add (myname);
1156
1157                 //handle the parameters
1158                 string mycsargs = String.Empty;
1159
1160                 for (int i = 0 ; i < parameters.Length ; i++) {
1161                         ParameterInfo p = parameters[i];
1162                         mycsargs += GetMonoType (Type.GetTypeCode (p.ParameterType));
1163                         myargs += CsTypeToC (p.ParameterType) + KeywordAvoid (p.Name);
1164                         if (i != parameters.Length - 1) {
1165                                 mycsargs += ",";
1166                                 myargs += ", ";
1167                         }
1168                 }
1169
1170                 if (myargs == String.Empty)
1171                         myargs = "void";
1172
1173                 C.WriteLine ();
1174
1175                 C.WriteLine (rettype + myname + " (" + myargs + ")", H, ";");
1176
1177                 C.WriteLine ("{");
1178
1179                 C.WriteLine ("static MonoMethod *_mono_method = NULL;");
1180
1181                 if (ctor || !stat)
1182                         C.WriteLine ("MonoObject *" + mono_obj + ";");
1183
1184                 if (parameters.Length != 0) C.WriteLine ("gpointer " + params_arg + "[" + parameters.Length + "];");
1185
1186                 if (ctor) {
1187                         C.WriteLine (CurType + " *" + instance + ";");
1188                 }
1189
1190                 if (!ctor && !stat) {
1191                         C.WriteLine ();
1192                         C.WriteLine (mono_obj + " = g_object_get_data (G_OBJECT (" + instance + "), \"mono-object\");");
1193                 }
1194
1195                 C.WriteLine ();
1196
1197                 C.WriteLine ("if (_mono_method == NULL) {");
1198
1199                 if (ctor)
1200                         C.WriteLine ("MonoMethodDesc *_mono_method_desc = mono_method_desc_new (\":.ctor(" + mycsargs + ")\", FALSE);");
1201                 else
1202                         C.WriteLine ("MonoMethodDesc *_mono_method_desc = mono_method_desc_new (\":" + m.Name + "(" + mycsargs + ")" + "\", FALSE);");
1203
1204
1205                 C.WriteLine ("_mono_method = mono_method_desc_search_in_class (_mono_method_desc, " + cur_type + "_get_mono_class ());");
1206
1207                 C.WriteLine ("}");
1208                 C.WriteLine ();
1209
1210                 //assign the parameters
1211                 for (int i = 0 ; i < parameters.Length ; i++) {
1212                         ParameterInfo p = parameters[i];
1213                         C.WriteLine (params_arg + "[" + i + "] = " + GetMonoVal (p.ParameterType, KeywordAvoid (p.Name)) + ";");
1214                 }
1215
1216                 if (parameters.Length != 0)
1217                         C.WriteLine ();
1218
1219                 if (ctor)
1220                         C.WriteLine (mono_obj + " = (MonoObject*) mono_object_new ((MonoDomain*) " + NsToC (ns) + "_get_mono_domain ()" + ", " + cur_type + "_get_mono_class ());");
1221
1222                 //delegates are a special case as we want their constructor to take a function pointer
1223                 if (ctor && t.IsSubclassOf (typeof (MulticastDelegate))) {
1224                         C.WriteLine ("mono_delegate_ctor (" + mono_obj + ", object, method);");
1225                 } else {
1226                         //code to invoke the method
1227
1228                         if (!ctor && has_return)
1229                                 if (IsRegisteredByVal (ret_type)) {
1230                                         C.WriteLine ("{");
1231                                         C.WriteLine (rettype + "* retval = (" + rettype + "*) mono_object_unbox (mono_runtime_invoke (_mono_method, " + mono_obj + ", " + params_arg + ", NULL));");
1232                                         C.WriteLine ("return (" + rettype + ") *retval;");
1233                                         C.WriteLine ("}");
1234                                 } else if (rettype == "const gchar *")
1235                                 {
1236                                         //convert the MonoString to a UTF8 before returning
1237                                         C.WriteLine ("return (" + rettype + ") mono_string_to_utf8 ((MonoString*) mono_runtime_invoke (_mono_method, " + mono_obj + ", " + params_arg + ", NULL));");
1238                                 } else {
1239                                         //TODO: this isn't right
1240                                         C.WriteLine ("return (" + rettype + ") mono_runtime_invoke (_mono_method, " + mono_obj + ", " + params_arg + ", NULL);");
1241                                 }
1242                                 else
1243                                         C.WriteLine ("mono_runtime_invoke (_mono_method, " + mono_obj + ", " + params_arg + ", NULL);");
1244                 }
1245
1246                 if (ctor) {
1247                         C.WriteLine ();
1248
1249                         //TODO: use ->priv, not data for better performance if not wrapping a gobject
1250                         if (wrap_gobject)
1251                                 C.WriteLine (instance + " = (" + CurType + " *) " + NsToC (ns) + "_cilc_glib_mobject_get_gobject (" + mono_obj + ");");
1252                         else
1253                                 C.WriteLine (instance + " = (" + CurType + " *) g_object_new (" + NsToC (ns).ToUpper () + "_TYPE_" + CamelToC (t.Name).ToUpper () + ", NULL);");
1254
1255                         C.WriteLine ("g_object_set_data (G_OBJECT (" + instance + "), \"mono-object\", " + mono_obj + ");");
1256                         C.WriteLine ();
1257                         C.WriteLine ("return " + instance + ";");
1258                 }
1259
1260                 C.WriteLine ("}");
1261         }
1262
1263         static string GetMonoType (TypeCode tc)
1264         {
1265                 //see mcs/class/corlib/System/TypeCode.cs
1266                 //see mono/mono/dis/get.c
1267
1268                 switch (tc)
1269                 {
1270                         case TypeCode.Int32:
1271                                 return "int";
1272
1273                         case TypeCode.String:
1274                                 return "string";
1275
1276                         default: //TODO: construct signature based on mono docs
1277                                 return tc.ToString ().ToLower ();
1278                 }
1279         }
1280
1281         static string GetMonoVal (Type t, string name)
1282         {
1283                 string type = t.FullName;
1284
1285                 if (TypeIsGObject (t))
1286                         return "(gpointer*) " + NsToC (ns) + "_cilc_glib_gobject_get_mobject (G_OBJECT (" + name + "))";
1287
1288                 switch (type) {
1289                         case "System.String":
1290                                 return "(gpointer*) mono_string_new ((MonoDomain*) mono_domain_get (), " + name + ")";
1291
1292                         case "System.Int32":
1293                                 return "&" + name;
1294
1295                         default:
1296                         return "&" + name;
1297                 }
1298         }
1299
1300         static string NsToC (string s)
1301         {
1302                 if (s == null)
1303                         return String.Empty;
1304
1305                 s = s.Replace ('.', '_');
1306                 return CamelToC (s);
1307         }
1308
1309         static string NsToFlat (string s)
1310         {
1311                 if (s == null)
1312                         return String.Empty;
1313
1314                 s = s.Replace (".", String.Empty);
1315                 return s;
1316         }
1317
1318         static string CamelToC (string s)
1319         {
1320                 //converts camel case to c-style
1321
1322                 string o = String.Empty;
1323
1324                 bool prev_is_cap = true;
1325
1326                 foreach  (char c in s) {
1327                         char cl = c.ToString ().ToLower ()[0];
1328                         bool is_cap = c != cl;
1329
1330                         if (!prev_is_cap && is_cap) {
1331                                 o += "_";
1332                         }
1333
1334                         o += cl;
1335                         prev_is_cap = is_cap;
1336
1337                         if (c == '_')
1338                                 prev_is_cap = true;
1339                 }
1340
1341                 return o;
1342         }
1343 }