mcs/class/Mono.Posix/Mono.Posix/make-map.cs

   1 //
   2 // MakeMap.cs: Builds a C map of constants defined on C# land
   3 //
   4 // Authors:
   5 //  Miguel de Icaza (miguel@novell.com)
   6 //  Jonathan Pryor (jonpryor@vt.edu)
   7 //
   8 // (C) 2003 Novell, Inc.
   9 // (C) 2004 Jonathan Pryor
  10 //
  11
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32 using System;
  33 using System.IO;
  34 using System.Reflection;
  35
  36 delegate void CreateFileHandler (string assembly_name, string file_prefix);
  37 delegate void AssemblyAttributesHandler (Assembly assembly);
  38 delegate void TypeHandler (Type t, string ns, string fn, string etype, bool bits);
  39 delegate void CloseFileHandler (string file_prefix);
  40
  41 class MakeMap {
  42
  43         public static int Main (string [] args)
  44         {
  45                 FileGenerator[] generators = new FileGenerator[]{
  46                         new HeaderFileGenerator (),
  47                         new SourceFileGenerator (),
  48                         new WrapperFileGenerator ()
  49                 };
  50
  51                 MakeMap composite = new MakeMap ();
  52                 foreach (FileGenerator g in generators) {
  53                         composite.FileCreators += new CreateFileHandler (g.CreateFile);
  54                         composite.AssemblyAttributesHandler +=
  55                                 new AssemblyAttributesHandler (g.WriteAssemblyAttributes);
  56                         composite.TypeHandler += new TypeHandler (g.WriteType);
  57                         composite.FileClosers += new CloseFileHandler (g.CloseFile);
  58                 }
  59
  60                 return composite.Run (args);
  61         }
  62
  63         event CreateFileHandler FileCreators;
  64         event AssemblyAttributesHandler AssemblyAttributesHandler;
  65         event TypeHandler TypeHandler;
  66         event CloseFileHandler FileClosers;
  67
  68         int Run (string[] args)
  69         {
  70                 if (args.Length != 2){
  71                         Console.WriteLine ("Usage is: make-map assembly output");
  72                         return 1;
  73                 }
  74
  75                 string assembly_name = args[0];
  76                 string output = args[1];
  77
  78                 FileCreators (assembly_name, output);
  79
  80                 Assembly assembly = Assembly.LoadFrom (assembly_name);
  81                 AssemblyAttributesHandler (assembly);
  82
  83                 Type [] exported_types = assembly.GetTypes ();
  84
  85                 foreach (Type t in exported_types) {
  86                         bool bits;
  87                         if (!CanMapType (t, out bits))
  88                                 continue;
  89
  90                         string fn = t.FullName.Replace (".", "_");
  91                         string ns = t.Namespace.Replace (".", "_");
  92       string etype = GetNativeType (t);
  93
  94                         TypeHandler (t, ns, fn, etype, bits);
  95                 }
  96                 FileClosers (output);
  97
  98                 return 0;
  99         }
 100
 101         static bool CanMapType (Type t, out bool bits)
 102         {
 103                 object [] attributes = t.GetCustomAttributes (false);
 104                 bool map = false;
 105                 bits = false;
 106
 107                 foreach (object attr in attributes) {
 108                         if (attr.GetType ().Name == "MapAttribute")
 109                                 map = true;
 110                         if (attr.GetType ().Name == "FlagsAttribute")
 111                                 bits = true;
 112                 }
 113                 return map;
 114         }
 115
 116         static string GetNativeType (Type t)
 117         {
 118                 string ut = Enum.GetUnderlyingType (t).Name;
 119                 switch (ut) {
 120                         case "Byte":   return "unsigned char";
 121                         case "SByte":  return "signed char";
 122                         case "Int16":  return "short";
 123                         case "UInt16": return "unsigned short";
 124                         case "Int32":  return "int";
 125                         case "UInt32": return "unsigned int";
 126                         case "Int64":  return "gint64";
 127                         case "UInt64": return "guint64";
 128                 }
 129                 return "int /* **unknown** " + ut + " */";
 130         }
 131 }
 132
 133 abstract class FileGenerator {
 134         public abstract void CreateFile (string assembly_name, string file_prefix);
 135
 136         public virtual void WriteAssemblyAttributes (Assembly assembly)
 137         {
 138         }
 139
 140         public abstract void WriteType (Type t, string ns, string fn, string etype, bool bits);
 141         public abstract void CloseFile (string file_prefix);
 142
 143         protected static void WriteHeader (StreamWriter s, string assembly)
 144         {
 145                 s.WriteLine (
 146                         "/*\n" +
 147                         " * This file was automatically generated by make-map from {0}.\n" +
 148                         " *\n" +
 149                         " * DO NOT MODIFY.\n" +
 150                         " */\n", assembly);
 151         }
 152 }
 153
 154 class HeaderFileGenerator : FileGenerator {
 155         StreamWriter sh;
 156
 157         public override void CreateFile (string assembly_name, string file_prefix)
 158         {
 159                 sh = File.CreateText (file_prefix + ".h");
 160                 WriteHeader (sh, assembly_name);
 161                 sh.WriteLine ("#ifndef INC_Mono_Posix_" + file_prefix + "_H");
 162                 sh.WriteLine ("#define INC_Mono_Posix_" + file_prefix + "_H\n");
 163                 sh.WriteLine ("#include <glib/gtypes.h>\n");
 164                 sh.WriteLine ("G_BEGIN_DECLS\n");
 165         }
 166
 167         public override void WriteType (Type t, string ns, string fn, string etype, bool bits)
 168         {
 169                 WriteLiteralValues (sh, t, fn);
 170                 sh.WriteLine ("int {1}_From{2} ({0} x, {0} *r);", etype, ns, t.Name);
 171                 sh.WriteLine ("int {1}_To{2} ({0} x, {0} *r);", etype, ns, t.Name);
 172                 sh.WriteLine ();
 173         }
 174
 175         static void WriteLiteralValues (StreamWriter sh, Type t, string n)
 176         {
 177                 object inst = Activator.CreateInstance (t);
 178                 foreach (FieldInfo fi in t.GetFields ()){
 179                         if (!fi.IsLiteral)
 180                                 continue;
 181                         sh.WriteLine ("#define {0}_{1} 0x{2:x}", n, fi.Name, fi.GetValue (inst));
 182                 }
 183         }
 184
 185         public override void CloseFile (string file_prefix)
 186         {
 187                 sh.WriteLine ("G_END_DECLS\n");
 188                 sh.WriteLine ("#endif /* ndef INC_Mono_Posix_" + file_prefix + "_H */\n");
 189                 sh.Close ();
 190         }
 191 }
 192
 193 class SourceFileGenerator : FileGenerator {
 194         StreamWriter sc;
 195
 196         public override void CreateFile (string assembly_name, string file_prefix)
 197         {
 198                 sc = File.CreateText (file_prefix + ".c");
 199                 WriteHeader (sc, assembly_name);
 200
 201                 if (file_prefix.IndexOf ("/") != -1)
 202                         file_prefix = file_prefix.Substring (file_prefix.IndexOf ("/") + 1);
 203                 sc.WriteLine ("#include \"{0}.h\"", file_prefix);
 204                 sc.WriteLine ();
 205         }
 206
 207         public override void WriteAssemblyAttributes (Assembly assembly)
 208         {
 209                 object [] x = assembly.GetCustomAttributes (false);
 210                 Console.WriteLine ("Got: " + x.Length);
 211                 foreach (object aattr in assembly.GetCustomAttributes (false)) {
 212                         Console.WriteLine ("Got: " + aattr.GetType ().Name);
 213                         if (aattr.GetType ().Name == "IncludeAttribute"){
 214                                 WriteDefines (sc, aattr);
 215                                 WriteIncludes (sc, aattr);
 216                         }
 217                 }
 218         }
 219
 220         static void WriteDefines (TextWriter writer, object o)
 221         {
 222                 PropertyInfo prop = o.GetType ().GetProperty ("Defines");
 223                 if (prop == null)
 224                         throw new Exception ("Cannot find 'Defines' property");
 225
 226                 MethodInfo method = prop.GetGetMethod ();
 227                 string [] defines = (string []) method.Invoke (o, null);
 228                 foreach (string def in defines) {
 229                         writer.WriteLine ("#ifndef {0}", def);
 230                         writer.WriteLine ("#define {0}", def);
 231                         writer.WriteLine ("#endif /* ndef {0} */", def);
 232                 }
 233         }
 234
 235         static void WriteIncludes (TextWriter writer, object o)
 236         {
 237                 PropertyInfo prop = o.GetType ().GetProperty ("Includes");
 238                 if (prop == null)
 239                         throw new Exception ("Cannot find 'Includes' property");
 240
 241                 MethodInfo method = prop.GetGetMethod ();
 242                 string [] includes = (string []) method.Invoke (o, null);
 243                 foreach (string inc in includes)
 244                         writer.WriteLine ("#include <{0}>", inc);
 245                 writer.WriteLine ();
 246         }
 247
 248         public override void WriteType (Type t, string ns, string fn, string etype, bool bits)
 249         {
 250                 WriteFromManagedType (t, ns, fn, etype, bits);
 251                 WriteToManagedType (t, ns, fn, etype, bits);
 252         }
 253
 254         private void WriteFromManagedType (Type t, string ns, string fn, string etype, bool bits)
 255         {
 256                 sc.WriteLine ("int {1}_From{2} ({0} x, {0} *r)", etype, ns, t.Name);
 257                 sc.WriteLine ("{");
 258                 sc.WriteLine ("\t*r = 0;");
 259                 // For many values, 0 is a valid value, but doesn't have it's own symbol.
 260                 // Examples: Error (0 means "no error"), WaitOptions (0 means "no options").
 261                 // Make 0 valid for all conversions.
 262                 sc.WriteLine ("\tif (x == 0)\n\t\treturn 0;");
 263                 foreach (FieldInfo fi in t.GetFields ()) {
 264                         if (!fi.IsLiteral)
 265                                 continue;
 266                         if (bits)
 267                                 // properly handle case where [Flags] enumeration has helper
 268                                 // synonyms.  e.g. DEFFILEMODE and ACCESSPERMS for mode_t.
 269                                 sc.WriteLine ("\tif ((x & {0}_{1}) == {0}_{1})", fn, fi.Name);
 270                         else
 271                                 sc.WriteLine ("\tif (x == {0}_{1})", fn, fi.Name);
 272                         sc.WriteLine ("#ifdef {0}", fi.Name);
 273                         if (bits)
 274                                 sc.WriteLine ("\t\t*r |= {1};", fn, fi.Name);
 275                         else
 276                                 sc.WriteLine ("\t\t{{*r = {1}; return 0;}}", fn, fi.Name);
 277                         sc.WriteLine ("#else /* def {0} */\n\t\t{{errno = EINVAL; return -1;}}", fi.Name);
 278                         sc.WriteLine ("#endif /* ndef {0} */", fi.Name);
 279                 }
 280                 if (bits)
 281                         sc.WriteLine ("\treturn 0;");
 282                 else
 283                         sc.WriteLine ("\terrno = EINVAL; return -1;"); // return error if not matched
 284                 sc.WriteLine ("}\n");
 285         }
 286
 287         private void WriteToManagedType (Type t, string ns, string fn, string etype, bool bits)
 288         {
 289                 sc.WriteLine ("int {1}_To{2} ({0} x, {0} *r)", etype, ns, t.Name);
 290                 sc.WriteLine ("{");
 291                 sc.WriteLine ("\t*r = 0;", etype);
 292                 // For many values, 0 is a valid value, but doesn't have it's own symbol.
 293                 // Examples: Error (0 means "no error"), WaitOptions (0 means "no options").
 294                 // Make 0 valid for all conversions.
 295                 sc.WriteLine ("\tif (x == 0)\n\t\treturn 0;");
 296                 foreach (FieldInfo fi in t.GetFields ()) {
 297                         if (!fi.IsLiteral)
 298                                 continue;
 299                         sc.WriteLine ("#ifdef {0}", fi.Name);
 300                         if (bits)
 301                                 // properly handle case where [Flags] enumeration has helper
 302                                 // synonyms.  e.g. DEFFILEMODE and ACCESSPERMS for mode_t.
 303                                 sc.WriteLine ("\tif ((x & {1}) == {1})\n\t\t*r |= {0}_{1};", fn, fi.Name);
 304                         else
 305                                 sc.WriteLine ("\tif (x == {1})\n\t\t{{*r = {0}_{1}; return 0;}}", fn, fi.Name);
 306                         sc.WriteLine ("#endif /* ndef {0} */", fi.Name);
 307                 }
 308                 if (bits)
 309                         sc.WriteLine ("\treturn 0;");
 310                 else
 311                         sc.WriteLine ("\terrno = EINVAL; return -1;");
 312                 sc.WriteLine ("}\n");
 313         }
 314
 315         public override void CloseFile (string file_prefix)
 316         {
 317                 sc.Close ();
 318         }
 319 }
 320
 321 class WrapperFileGenerator : FileGenerator {
 322         StreamWriter scs;
 323
 324         public override void CreateFile (string assembly_name, string file_prefix)
 325         {
 326                 scs = File.CreateText (file_prefix + ".cs");
 327                 WriteHeader (scs, assembly_name);
 328                 scs.WriteLine ("using System;");
 329                 scs.WriteLine ("using System.Runtime.InteropServices;");
 330                 scs.WriteLine ("using Mono.Posix;\n");
 331                 scs.WriteLine ("namespace Mono.Posix {\n");
 332                 scs.WriteLine ("\tpublic sealed /* static */ class PosixConvert");
 333                 scs.WriteLine ("\t{");
 334                 scs.WriteLine ("\t\tprivate PosixConvert () {}\n");
 335                 scs.WriteLine ("\t\tprivate const string LIB = \"MonoPosixHelper\";\n");
 336                 scs.WriteLine ("\t\tprivate static void ThrowArgumentException (object value)");
 337                 scs.WriteLine ("\t\t{");
 338                 scs.WriteLine ("\t\t\tthrow new ArgumentOutOfRangeException (\"value\", value,");
 339                 scs.WriteLine ("\t\t\t\tLocale.GetText (\"Current platform doesn't support this value.\"));");
 340                 scs.WriteLine ("\t\t}\n");
 341         }
 342
 343         public override void WriteType (Type t, string ns, string fn, string etype, bool bits)
 344         {
 345                 string mtype = Enum.GetUnderlyingType(t).Name;
 346                 scs.WriteLine ("\t\t[DllImport (LIB, " +
 347                         "EntryPoint=\"{0}_From{1}\")]\n" +
 348                         "\t\tprivate static extern int From{1} ({1} value, out {2} rval);\n",
 349                         ns, t.Name, mtype);
 350                 scs.WriteLine ("\t\tpublic static bool TryFrom{1} ({1} value, out {2} rval)\n" +
 351                         "\t\t{{\n" +
 352                         "\t\t\treturn From{1} (value, out rval) == 0;\n" +
 353                         "\t\t}}\n", ns, t.Name, mtype);
 354                 scs.WriteLine ("\t\tpublic static {0} From{1} ({1} value)", mtype, t.Name);
 355                 scs.WriteLine ("\t\t{");
 356                 scs.WriteLine ("\t\t\t{0} rval;", mtype);
 357                 scs.WriteLine ("\t\t\tif (From{0} (value, out rval) == -1)\n" +
 358                                 "\t\t\t\tThrowArgumentException (value);", t.Name);
 359                 scs.WriteLine ("\t\t\treturn rval;");
 360                 scs.WriteLine ("\t\t}\n");
 361                 scs.WriteLine ("\t\t[DllImport (LIB, " +
 362                         "EntryPoint=\"{0}_To{1}\")]\n" +
 363                         "\t\tprivate static extern int To{1} ({2} value, out {1} rval);\n",
 364                         ns, t.Name, mtype);
 365                 scs.WriteLine ("\t\tpublic static bool TryTo{1} ({0} value, out {1} rval)\n" +
 366                         "\t\t{{\n" +
 367                         "\t\t\treturn To{1} (value, out rval) == 0;\n" +
 368                         "\t\t}}\n", mtype, t.Name);
 369                 scs.WriteLine ("\t\tpublic static {1} To{1} ({0} value)", mtype, t.Name);
 370                 scs.WriteLine ("\t\t{");
 371                 scs.WriteLine ("\t\t\t{0} rval;", t.Name);
 372                 scs.WriteLine ("\t\t\tif (To{0} (value, out rval) == -1)\n" +
 373                                 "\t\t\t\tThrowArgumentException (value);", t.Name);
 374                 scs.WriteLine ("\t\t\treturn rval;");
 375                 scs.WriteLine ("\t\t}\n");
 376         }
 377
 378         public override void CloseFile (string file_prefix)
 379         {
 380                 scs.WriteLine ("\t}");
 381                 scs.WriteLine ("}\n");
 382                 scs.Close ();
 383         }
 384 }
 385
 386 // vim: noexpandtab