tools/widl/header.c

   1 /*
   2  * IDL Compiler
   3  *
   4  * Copyright 2002 Ove Kaaven
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #ifdef HAVE_UNISTD_H
  26 # include <unistd.h>
  27 #endif
  28 #include <string.h>
  29 #include <assert.h>
  30 #include <ctype.h>
  31 #include <signal.h>
  32
  33 #include "windef.h"
  34 #include "widl.h"
  35 #include "utils.h"
  36 #include "parser.h"
  37 #include "header.h"
  38
  39 static int indentation = 0;
  40
  41 static void indent(int delta)
  42 {
  43   int c;
  44   if (delta < 0) indentation += delta;
  45   for (c=0; c<indentation; c++) fprintf(header, "    ");
  46   if (delta > 0) indentation += delta;
  47 }
  48
  49 int is_attr(attr_t *a, enum attr_type t)
  50 {
  51   while (a) {
  52     if (a->type == t) return 1;
  53     a = NEXT_LINK(a);
  54   }
  55   return 0;
  56 }
  57
  58 void *get_attrp(attr_t *a, enum attr_type t)
  59 {
  60   while (a) {
  61     if (a->type == t) return a->u.pval;
  62     a = NEXT_LINK(a);
  63   }
  64   return NULL;
  65 }
  66
  67 unsigned long get_attrv(attr_t *a, enum attr_type t)
  68 {
  69   while (a) {
  70     if (a->type == t) return a->u.ival;
  71     a = NEXT_LINK(a);
  72   }
  73   return 0;
  74 }
  75
  76 int is_void(type_t *t, var_t *v)
  77 {
  78   if (v && v->ptr_level) return 0;
  79   if (!t->type && !t->ref) return 1;
  80   return 0;
  81 }
  82
  83 static void write_guid(const char *guid_prefix, const char *name, UUID *uuid)
  84 {
  85   if (!uuid) return;
  86   fprintf(header, "DEFINE_GUID(%s_%s, 0x%08lx, 0x%04x, 0x%04x, 0x%02x,0x%02x, 0x%02x,"
  87         "0x%02x,0x%02x,0x%02x,0x%02x,0x%02x);\n",
  88         guid_prefix, name, uuid->Data1, uuid->Data2, uuid->Data3, uuid->Data4[0],
  89         uuid->Data4[1], uuid->Data4[2], uuid->Data4[3], uuid->Data4[4], uuid->Data4[5],
  90         uuid->Data4[6], uuid->Data4[7]);
  91 }
  92
  93 static void write_pident(FILE *h, var_t *v)
  94 {
  95   int c;
  96   for (c=0; c<v->ptr_level; c++) {
  97     fprintf(h, "*");
  98   }
  99   if (v->name) fprintf(h, "%s", v->name);
 100 }
 101
 102 void write_name(FILE *h, var_t *v)
 103 {
 104   if (is_attr( v->attrs, ATTR_PROPGET ))
 105     fprintf(h, "get_" );
 106   else if (is_attr( v->attrs, ATTR_PROPPUT ))
 107     fprintf(h, "put_" );
 108   fprintf(h, "%s", v->name);
 109 }
 110
 111 char* get_name(var_t *v)
 112 {
 113   return v->name;
 114 }
 115
 116 static void write_array(FILE *h, expr_t *v, int field)
 117 {
 118   if (!v) return;
 119   while (NEXT_LINK(v)) v = NEXT_LINK(v);
 120   fprintf(h, "[");
 121   while (v) {
 122     if (v->is_const)
 123       fprintf(h, "%ld", v->cval); /* statically sized array */
 124     else
 125       if (field) fprintf(h, "1"); /* dynamically sized array */
 126     if (PREV_LINK(v))
 127       fprintf(h, ", ");
 128     v = PREV_LINK(v);
 129   }
 130   fprintf(h, "]");
 131 }
 132
 133 static void write_field(FILE *h, var_t *v)
 134 {
 135   if (!v) return;
 136   if (v->type) {
 137     indent(0);
 138     write_type(h, v->type, NULL, v->tname);
 139     if (get_name(v)) {
 140       fprintf(h, " ");
 141       write_pident(h, v);
 142     }
 143     else {
 144       /* not all C/C++ compilers support anonymous structs and unions */
 145       switch (v->type->type) {
 146       case RPC_FC_STRUCT:
 147       case RPC_FC_CVSTRUCT:
 148       case RPC_FC_CPSTRUCT:
 149       case RPC_FC_CSTRUCT:
 150       case RPC_FC_PSTRUCT:
 151       case RPC_FC_BOGUS_STRUCT:
 152       case RPC_FC_ENCAPSULATED_UNION:
 153         fprintf(h, " DUMMYSTRUCTNAME");
 154         break;
 155       case RPC_FC_NON_ENCAPSULATED_UNION:
 156         fprintf(h, " DUMMYUNIONNAME");
 157         break;
 158       default:
 159         /* ? */
 160         break;
 161       }
 162     }
 163     write_array(h, v->array, 1);
 164     fprintf(h, ";\n");
 165   }
 166 }
 167
 168 static void write_fields(FILE *h, var_t *v)
 169 {
 170   var_t *first = v;
 171   if (!v) return;
 172   while (NEXT_LINK(v)) v = NEXT_LINK(v);
 173   while (v) {
 174     write_field(h, v);
 175     if (v == first) break;
 176     v = PREV_LINK(v);
 177   }
 178 }
 179
 180 static void write_enums(FILE *h, var_t *v)
 181 {
 182   if (!v) return;
 183   while (NEXT_LINK(v)) v = NEXT_LINK(v);
 184   while (v) {
 185     if (get_name(v)) {
 186       indent(0);
 187       write_name(h, v);
 188       if (v->eval) {
 189         fprintf(h, " = ");
 190         write_expr(h, v->eval);
 191       }
 192     }
 193     if (PREV_LINK(v))
 194       fprintf(h, ",\n");
 195     v = PREV_LINK(v);
 196   }
 197   fprintf(h, "\n");
 198 }
 199
 200 void write_type(FILE *h, type_t *t, var_t *v, char *n)
 201 {
 202   int c;
 203
 204   if (n) fprintf(h, "%s", n);
 205   else {
 206     if (t->is_const) fprintf(h, "const ");
 207     if (t->type) {
 208       if (t->sign > 0) fprintf(h, "signed ");
 209       else if (t->sign < 0) fprintf(h, "unsigned ");
 210       switch (t->type) {
 211       case RPC_FC_BYTE:
 212         if (t->ref) fprintf(h, t->ref->name);
 213         else fprintf(h, "byte");
 214         break;
 215       case RPC_FC_CHAR:
 216         if (t->ref) fprintf(h, t->ref->name);
 217         else fprintf(h, "char");
 218         break;
 219       case RPC_FC_WCHAR:
 220         fprintf(h, "wchar_t");
 221         break;
 222       case RPC_FC_USHORT:
 223       case RPC_FC_SHORT:
 224         if (t->ref) fprintf(h, t->ref->name);
 225         else fprintf(h, "short");
 226         break;
 227       case RPC_FC_ULONG:
 228       case RPC_FC_LONG:
 229         if (t->ref) fprintf(h, t->ref->name);
 230         else fprintf(h, "long");
 231         break;
 232       case RPC_FC_HYPER:
 233         if (t->ref) fprintf(h, t->ref->name);
 234         else fprintf(h, "hyper");
 235         break;
 236       case RPC_FC_FLOAT:
 237         fprintf(h, "float");
 238         break;
 239       case RPC_FC_DOUBLE:
 240         fprintf(h, "double");
 241         break;
 242       case RPC_FC_ENUM16:
 243       case RPC_FC_ENUM32:
 244         if (t->defined && !t->written) {
 245           if (t->name) fprintf(h, "enum %s {\n", t->name);
 246           else fprintf(h, "enum {\n");
 247           t->written = TRUE;
 248           indentation++;
 249           write_enums(h, t->fields);
 250           indent(-1);
 251           fprintf(h, "}");
 252         }
 253         else fprintf(h, "enum %s", t->name);
 254         break;
 255       case RPC_FC_ERROR_STATUS_T:
 256         if (t->ref) fprintf(h, t->ref->name);
 257         else fprintf(h, "error_status_t");
 258         break;
 259       case RPC_FC_BIND_PRIMITIVE:
 260         if (t->ref) fprintf(h, t->ref->name);
 261         else fprintf(h, "handle_t");
 262         break;
 263       case RPC_FC_STRUCT:
 264       case RPC_FC_CVSTRUCT:
 265       case RPC_FC_CPSTRUCT:
 266       case RPC_FC_CSTRUCT:
 267       case RPC_FC_PSTRUCT:
 268       case RPC_FC_BOGUS_STRUCT:
 269       case RPC_FC_ENCAPSULATED_UNION:
 270         if (t->defined && !t->written) {
 271           if (t->name) fprintf(h, "struct %s {\n", t->name);
 272           else fprintf(h, "struct {\n");
 273           t->written = TRUE;
 274           indentation++;
 275           write_fields(h, t->fields);
 276           indent(-1);
 277           fprintf(h, "}");
 278         }
 279         else fprintf(h, "struct %s", t->name);
 280         break;
 281       case RPC_FC_NON_ENCAPSULATED_UNION:
 282         if (t->defined && !t->written) {
 283           if (t->name) fprintf(h, "union %s {\n", t->name);
 284           else fprintf(h, "union {\n");
 285           t->written = TRUE;
 286           indentation++;
 287           write_fields(h, t->fields);
 288           indent(-1);
 289           fprintf(h, "}");
 290         }
 291         else fprintf(h, "union %s", t->name);
 292         break;
 293       default:
 294         fprintf(h, "(unknown-type:%d)", t->type);
 295       }
 296     }
 297     else {
 298       if (t->ref) {
 299         write_type(h, t->ref, NULL, t->name);
 300       }
 301       else fprintf(h, "void");
 302     }
 303   }
 304   if (v) {
 305     for (c=0; c<v->ptr_level; c++) {
 306       fprintf(h, "*");
 307     }
 308   }
 309 }
 310
 311 void write_typedef(type_t *type, var_t *names)
 312 {
 313   char *tname = names->tname;
 314   var_t *lname;
 315   while (NEXT_LINK(names)) names = NEXT_LINK(names);
 316   lname = names;
 317   fprintf(header, "typedef ");
 318   write_type(header, type, NULL, tname);
 319   fprintf(header, " ");
 320   while (names) {
 321     write_pident(header, names);
 322     if (PREV_LINK(names))
 323       fprintf(header, ", ");
 324     names = PREV_LINK(names);
 325   }
 326   fprintf(header, ";\n");
 327
 328   if (get_attrp(type->attrs, ATTR_WIREMARSHAL)) {
 329     names = lname;
 330     while (names) {
 331       char *name = get_name(names);
 332       fprintf(header, "unsigned long   __RPC_USER %s_UserSize     (unsigned long *, unsigned long,   %s *);\n", name, name);
 333       fprintf(header, "unsigned char * __RPC_USER %s_UserMarshal  (unsigned long *, unsigned char *, %s *);\n", name, name);
 334       fprintf(header, "unsigned char * __RPC_USER %s_UserUnmarshal(unsigned long *, unsigned char *, %s *);\n", name, name);
 335       fprintf(header, "void            __RPC_USER %s_UserFree     (unsigned long *, %s *);\n", name, name);
 336       if (PREV_LINK(names))
 337         fprintf(header, ", ");
 338       names = PREV_LINK(names);
 339     }
 340   }
 341
 342   fprintf(header, "\n");
 343 }
 344
 345 static void do_write_expr(FILE *h, expr_t *e, int p)
 346 {
 347   switch (e->type) {
 348   case EXPR_VOID:
 349     break;
 350   case EXPR_NUM:
 351     fprintf(h, "%ld", e->u.lval);
 352     break;
 353   case EXPR_HEXNUM:
 354     fprintf(h, "0x%lx", e->u.lval);
 355     break;
 356   case EXPR_IDENTIFIER:
 357     fprintf(h, "%s", e->u.sval);
 358     break;
 359   case EXPR_NEG:
 360     fprintf(h, "-");
 361     do_write_expr(h, e->ref, 1);
 362     break;
 363   case EXPR_NOT:
 364     fprintf(h, "~");
 365     do_write_expr(h, e->ref, 1);
 366     break;
 367   case EXPR_PPTR:
 368     fprintf(h, "*");
 369     do_write_expr(h, e->ref, 1);
 370     break;
 371   case EXPR_CAST:
 372     fprintf(h, "(");
 373     write_type(h, e->u.tref->ref, NULL, e->u.tref->name);
 374     fprintf(h, ")");
 375     do_write_expr(h, e->ref, 1);
 376     break;
 377   case EXPR_SIZEOF:
 378     fprintf(h, "sizeof(");
 379     write_type(h, e->u.tref->ref, NULL, e->u.tref->name);
 380     fprintf(h, ")");
 381     break;
 382   case EXPR_SHL:
 383   case EXPR_SHR:
 384   case EXPR_MUL:
 385   case EXPR_DIV:
 386   case EXPR_ADD:
 387   case EXPR_SUB:
 388   case EXPR_AND:
 389   case EXPR_OR:
 390     if (p) fprintf(h, "(");
 391     do_write_expr(h, e->ref, 1);
 392     switch (e->type) {
 393     case EXPR_SHL: fprintf(h, " << "); break;
 394     case EXPR_SHR: fprintf(h, " >> "); break;
 395     case EXPR_MUL: fprintf(h, " * "); break;
 396     case EXPR_DIV: fprintf(h, " / "); break;
 397     case EXPR_ADD: fprintf(h, " + "); break;
 398     case EXPR_SUB: fprintf(h, " - "); break;
 399     case EXPR_AND: fprintf(h, " & "); break;
 400     case EXPR_OR:  fprintf(h, " | "); break;
 401     default: break;
 402     }
 403     do_write_expr(h, e->u.ext, 1);
 404     if (p) fprintf(h, ")");
 405     break;
 406   case EXPR_COND:
 407     if (p) fprintf(h, "(");
 408     do_write_expr(h, e->ref, 1);
 409     fprintf(h, " ? ");
 410     do_write_expr(h, e->u.ext, 1);
 411     fprintf(h, " : ");
 412     do_write_expr(h, e->ext2, 1);
 413     if (p) fprintf(h, ")");
 414     break;
 415   }
 416 }
 417
 418 void write_expr(FILE *h, expr_t *e)
 419 {
 420   do_write_expr(h, e, 0);
 421 }
 422
 423 void write_constdef(var_t *v)
 424 {
 425   fprintf(header, "#define %s (", get_name(v));
 426   write_expr(header, v->eval);
 427   fprintf(header, ")\n\n");
 428 }
 429
 430 void write_externdef(var_t *v)
 431 {
 432   fprintf(header, "extern const ");
 433   write_type(header, v->type, NULL, v->tname);
 434   if (get_name(v)) {
 435     fprintf(header, " ");
 436     write_pident(header, v);
 437   }
 438   fprintf(header, ";\n\n");
 439 }
 440
 441 void write_library(char *name, attr_t *attr) {
 442   UUID *uuid = get_attrp(attr, ATTR_UUID);
 443   fprintf(header, "\n");
 444   write_guid("LIBID", name, uuid);
 445   fprintf(header, "\n");
 446 }
 447
 448 /********** INTERFACES **********/
 449
 450 int is_object(attr_t *a)
 451 {
 452   while (a) {
 453     if (a->type == ATTR_OBJECT || a->type == ATTR_ODL) return 1;
 454     a = NEXT_LINK(a);
 455   }
 456   return 0;
 457 }
 458
 459 int is_local(attr_t *a)
 460 {
 461   return is_attr(a, ATTR_LOCAL);
 462 }
 463
 464 var_t *is_callas(attr_t *a)
 465 {
 466   return get_attrp(a, ATTR_CALLAS);
 467 }
 468
 469 static int write_method_macro(type_t *iface, char *name)
 470 {
 471   int idx;
 472   func_t *cur = iface->funcs;
 473
 474   if (iface->ref) idx = write_method_macro(iface->ref, name);
 475   else idx = 0;
 476
 477   if (!cur) return idx;
 478   while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
 479
 480   fprintf(header, "/*** %s methods ***/\n", iface->name);
 481   while (cur) {
 482     var_t *def = cur->def;
 483     if (!is_callas(def->attrs)) {
 484       var_t *arg = cur->args;
 485       int argc = 0;
 486       int c;
 487       while (arg) {
 488         arg = NEXT_LINK(arg);
 489         argc++;
 490       }
 491
 492       fprintf(header, "#define %s_", name);
 493       write_name(header,def);
 494       fprintf(header, "(p");
 495       for (c=0; c<argc; c++)
 496         fprintf(header, ",%c", c+'a');
 497       fprintf(header, ") ");
 498
 499       fprintf(header, "(p)->lpVtbl->");
 500       write_name(header, def);
 501       fprintf(header, "(p");
 502       for (c=0; c<argc; c++)
 503         fprintf(header, ",%c", c+'a');
 504       fprintf(header, ")\n");
 505       if (cur->idx == -1) cur->idx = idx;
 506       else if (cur->idx != idx) yyerror("BUG: method index mismatch in write_method_macro");
 507       idx++;
 508     }
 509     cur = PREV_LINK(cur);
 510   }
 511   return idx;
 512 }
 513
 514 void write_args(FILE *h, var_t *arg, char *name, int method, int do_indent)
 515 {
 516   int count = 0;
 517   if (arg) {
 518     while (NEXT_LINK(arg))
 519       arg = NEXT_LINK(arg);
 520   }
 521   if (do_indent)
 522   {
 523       if (h == header) {
 524           indentation++;
 525           indent(0);
 526       } else fprintf(h, "    ");
 527   }
 528   if (method == 1) {
 529     fprintf(h, "%s* This", name);
 530     count++;
 531   }
 532   while (arg) {
 533     if (count) {
 534         if (do_indent)
 535         {
 536             fprintf(h, ",\n");
 537             if (h == header) indent(0);
 538             else fprintf(h, "    ");
 539         }
 540         else fprintf(h, ",");
 541     }
 542     write_type(h, arg->type, arg, arg->tname);
 543     if (arg->args)
 544     {
 545       fprintf(h, " (STDMETHODCALLTYPE *");
 546       write_name(h,arg);
 547       fprintf(h, ")(");
 548       write_args(h, arg->args, NULL, 0, FALSE);
 549       fprintf(h, ")");
 550     }
 551     else
 552     {
 553       fprintf(h, " ");
 554       write_name(h, arg);
 555     }
 556     write_array(h, arg->array, 0);
 557     arg = PREV_LINK(arg);
 558     count++;
 559   }
 560   if (do_indent && h == header) indentation--;
 561 }
 562
 563 static void write_cpp_method_def(type_t *iface)
 564 {
 565   func_t *cur = iface->funcs;
 566
 567   if (!cur) return;
 568   while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
 569   while (cur) {
 570     var_t *def = cur->def;
 571     if (!is_callas(def->attrs)) {
 572       indent(0);
 573       fprintf(header, "virtual ");
 574       write_type(header, def->type, def, def->tname);
 575       fprintf(header, " STDMETHODCALLTYPE ");
 576       write_name(header, def);
 577       fprintf(header, "(\n");
 578       write_args(header, cur->args, iface->name, 2, TRUE);
 579       fprintf(header, ") = 0;\n");
 580       fprintf(header, "\n");
 581     }
 582     cur = PREV_LINK(cur);
 583   }
 584 }
 585
 586 static void do_write_c_method_def(type_t *iface, char *name)
 587 {
 588   func_t *cur = iface->funcs;
 589
 590   if (iface->ref) do_write_c_method_def(iface->ref, name);
 591
 592   if (!cur) return;
 593   while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
 594   indent(0);
 595   fprintf(header, "/*** %s methods ***/\n", iface->name);
 596   while (cur) {
 597     var_t *def = cur->def;
 598     if (!is_callas(def->attrs)) {
 599       indent(0);
 600       write_type(header, def->type, def, def->tname);
 601       fprintf(header, " (STDMETHODCALLTYPE *");
 602       write_name(header, def);
 603       fprintf(header, ")(\n");
 604       write_args(header, cur->args, name, 1, TRUE);
 605       fprintf(header, ");\n");
 606       fprintf(header, "\n");
 607     }
 608     cur = PREV_LINK(cur);
 609   }
 610 }
 611
 612 static void write_c_method_def(type_t *iface)
 613 {
 614   do_write_c_method_def(iface, iface->name);
 615 }
 616
 617 static void write_c_disp_method_def(type_t *iface)
 618 {
 619   do_write_c_method_def(iface->ref, iface->name);
 620 }
 621
 622 static void write_method_proto(type_t *iface)
 623 {
 624   func_t *cur = iface->funcs;
 625
 626   if (!cur) return;
 627   while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
 628   while (cur) {
 629     var_t *def = cur->def;
 630     var_t *cas = is_callas(def->attrs);
 631     if (!is_local(def->attrs)) {
 632       /* proxy prototype */
 633       write_type(header, def->type, def, def->tname);
 634       fprintf(header, " CALLBACK %s_", iface->name);
 635       write_name(header, def);
 636       fprintf(header, "_Proxy(\n");
 637       write_args(header, cur->args, iface->name, 1, TRUE);
 638       fprintf(header, ");\n");
 639       /* stub prototype */
 640       fprintf(header, "void __RPC_STUB %s_", iface->name);
 641       write_name(header,def);
 642       fprintf(header, "_Stub(\n");
 643       fprintf(header, "    struct IRpcStubBuffer* This,\n");
 644       fprintf(header, "    struct IRpcChannelBuffer* pRpcChannelBuffer,\n");
 645       fprintf(header, "    PRPC_MESSAGE pRpcMessage,\n");
 646       fprintf(header, "    DWORD* pdwStubPhase);\n");
 647     }
 648     if (cas) {
 649       func_t *m = iface->funcs;
 650       while (m && strcmp(get_name(m->def), cas->name))
 651         m = NEXT_LINK(m);
 652       if (m) {
 653         var_t *mdef = m->def;
 654         /* proxy prototype - use local prototype */
 655         write_type(header, mdef->type, mdef, mdef->tname);
 656         fprintf(header, " CALLBACK %s_", iface->name);
 657         write_name(header, mdef);
 658         fprintf(header, "_Proxy(\n");
 659         write_args(header, m->args, iface->name, 1, TRUE);
 660         fprintf(header, ");\n");
 661         /* stub prototype - use remotable prototype */
 662         write_type(header, def->type, def, def->tname);
 663         fprintf(header, " __RPC_STUB %s_", iface->name);
 664         write_name(header, mdef);
 665         fprintf(header, "_Stub(\n");
 666         write_args(header, cur->args, iface->name, 1, TRUE);
 667         fprintf(header, ");\n");
 668       }
 669       else {
 670         yywarning("invalid call_as attribute (%s -> %s)\n", get_name(def), cas->name);
 671       }
 672     }
 673
 674     cur = PREV_LINK(cur);
 675   }
 676 }
 677
 678 static void write_function_proto(type_t *iface)
 679 {
 680   func_t *cur = iface->funcs;
 681   while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
 682   while (cur) {
 683     var_t *def = cur->def;
 684     /* FIXME: do we need to handle call_as? */
 685     write_type(header, def->type, def, def->tname);
 686     fprintf(header, " ");
 687     write_name(header, def);
 688     fprintf(header, "(\n");
 689     if (cur->args)
 690       write_args(header, cur->args, iface->name, 0, TRUE);
 691     else
 692       fprintf(header, "    void");
 693     fprintf(header, ");\n");
 694
 695     cur = PREV_LINK(cur);
 696   }
 697 }
 698
 699 void write_forward(type_t *iface)
 700 {
 701   /* C/C++ forwards should only be written for object interfaces, so if we
 702    * have a full definition we only write one if we find [object] among the
 703    * attributes - however, if we don't have a full definition at this point
 704    * (i.e. this is an IDL forward), then we also assume that it is an object
 705    * interface, since non-object interfaces shouldn't need forwards */
 706   if ((!iface->defined || is_object(iface->attrs) || is_attr(iface->attrs, ATTR_DISPINTERFACE))
 707         && !iface->written) {
 708     fprintf(header,"#ifndef __%s_FWD_DEFINED__\n", iface->name);
 709     fprintf(header,"#define __%s_FWD_DEFINED__\n", iface->name);
 710     fprintf(header, "typedef struct %s %s;\n", iface->name, iface->name);
 711     fprintf(header, "#endif\n\n" );
 712     iface->written = TRUE;
 713   }
 714 }
 715
 716 static void write_iface_guid(type_t *iface)
 717 {
 718   UUID *uuid = get_attrp(iface->attrs, ATTR_UUID);
 719   write_guid("IID", iface->name, uuid);
 720 }
 721
 722 static void write_dispiface_guid(type_t *iface)
 723 {
 724   UUID *uuid = get_attrp(iface->attrs, ATTR_UUID);
 725   write_guid("DIID", iface->name, uuid);
 726 }
 727
 728 static void write_coclass_guid(class_t *cocl)
 729 {
 730   UUID *uuid = get_attrp(cocl->attrs, ATTR_UUID);
 731   write_guid("CLSID", cocl->name, uuid);
 732 }
 733
 734 static void write_com_interface(type_t *iface)
 735 {
 736   if (!iface->funcs && !iface->ref) {
 737     yywarning("%s has no methods", iface->name);
 738     return;
 739   }
 740
 741   fprintf(header, "/*****************************************************************************\n");
 742   fprintf(header, " * %s interface\n", iface->name);
 743   fprintf(header, " */\n");
 744   fprintf(header,"#ifndef __%s_INTERFACE_DEFINED__\n", iface->name);
 745   fprintf(header,"#define __%s_INTERFACE_DEFINED__\n\n", iface->name);
 746   write_iface_guid(iface);
 747   write_forward(iface);
 748   /* C++ interface */
 749   fprintf(header, "#if defined(__cplusplus) && !defined(CINTERFACE)\n");
 750   if (iface->ref)
 751   {
 752       fprintf(header, "struct %s : public %s\n", iface->name, iface->ref->name);
 753       fprintf(header, "{\n");
 754       indentation++;
 755       write_cpp_method_def(iface);
 756       indentation--;
 757       fprintf(header, "};\n");
 758   }
 759   else
 760   {
 761       fprintf(header, "struct %s\n", iface->name);
 762       fprintf(header, "{\n");
 763       fprintf(header, "    BEGIN_INTERFACE\n");
 764       fprintf(header, "\n");
 765       indentation++;
 766       write_cpp_method_def(iface);
 767       indentation--;
 768       fprintf(header, "    END_INTERFACE\n");
 769       fprintf(header, "};\n");
 770   }
 771   fprintf(header, "#else\n");
 772   /* C interface */
 773   fprintf(header, "typedef struct %sVtbl %sVtbl;\n", iface->name, iface->name);
 774   fprintf(header, "struct %s {\n", iface->name);
 775   fprintf(header, "    const %sVtbl* lpVtbl;\n", iface->name);
 776   fprintf(header, "};\n");
 777   fprintf(header, "struct %sVtbl {\n", iface->name);
 778   indentation++;
 779   fprintf(header, "    BEGIN_INTERFACE\n");
 780   fprintf(header, "\n");
 781   write_c_method_def(iface);
 782   indentation--;
 783   fprintf(header, "    END_INTERFACE\n");
 784   fprintf(header, "};\n");
 785   fprintf(header, "\n");
 786   fprintf(header, "#ifdef COBJMACROS\n");
 787   write_method_macro(iface, iface->name);
 788   fprintf(header, "#endif\n");
 789   fprintf(header, "\n");
 790   fprintf(header, "#endif\n");
 791   fprintf(header, "\n");
 792   write_method_proto(iface);
 793   fprintf(header,"\n#endif  /* __%s_INTERFACE_DEFINED__ */\n\n", iface->name);
 794 }
 795
 796 static void write_rpc_interface(type_t *iface)
 797 {
 798   unsigned long ver = get_attrv(iface->attrs, ATTR_VERSION);
 799   char *var = get_attrp(iface->attrs, ATTR_IMPLICIT_HANDLE);
 800
 801   if (!iface->funcs) return;
 802
 803   fprintf(header, "/*****************************************************************************\n");
 804   fprintf(header, " * %s interface (v%d.%d)\n", iface->name, LOWORD(ver), HIWORD(ver));
 805   fprintf(header, " */\n");
 806   write_iface_guid(iface);
 807   if (var) fprintf(header, "extern handle_t %s;\n", var);
 808   fprintf(header, "extern RPC_IF_HANDLE %s_v%d_%d_c_ifspec;\n", iface->name, LOWORD(ver), HIWORD(ver));
 809   fprintf(header, "extern RPC_IF_HANDLE %s_v%d_%d_s_ifspec;\n", iface->name, LOWORD(ver), HIWORD(ver));
 810   write_function_proto(iface);
 811   fprintf(header, "\n");
 812
 813   /* FIXME: server/client code */
 814 }
 815
 816 void write_interface(type_t *iface)
 817 {
 818   if (is_object(iface->attrs))
 819     write_com_interface(iface);
 820   else
 821     write_rpc_interface(iface);
 822 }
 823
 824 void write_dispinterface(type_t *iface)
 825 {
 826   fprintf(header, "/*****************************************************************************\n");
 827   fprintf(header, " * %s dispinterface\n", iface->name);
 828   fprintf(header, " */\n");
 829   fprintf(header,"#ifndef __%s_DISPINTERFACE_DEFINED__\n", iface->name);
 830   fprintf(header,"#define __%s_DISPINTERFACE_DEFINED__\n\n", iface->name);
 831   write_dispiface_guid(iface);
 832   write_forward(iface);
 833   /* C++ interface */
 834   fprintf(header, "#if defined(__cplusplus) && !defined(CINTERFACE)\n");
 835   fprintf(header, "struct %s : public %s\n", iface->name, iface->ref->name);
 836   fprintf(header, "{\n");
 837   fprintf(header, "};\n");
 838   fprintf(header, "#else\n");
 839   /* C interface */
 840   fprintf(header, "typedef struct %sVtbl %sVtbl;\n", iface->name, iface->name);
 841   fprintf(header, "struct %s {\n", iface->name);
 842   fprintf(header, "    const %sVtbl* lpVtbl;\n", iface->name);
 843   fprintf(header, "};\n");
 844   fprintf(header, "struct %sVtbl {\n", iface->name);
 845   indentation++;
 846   fprintf(header, "    BEGIN_INTERFACE\n");
 847   fprintf(header, "\n");
 848   write_c_disp_method_def(iface);
 849   indentation--;
 850   fprintf(header, "    END_INTERFACE\n");
 851   fprintf(header, "};\n");
 852   fprintf(header, "\n");
 853   fprintf(header, "#ifdef COBJMACROS\n");
 854   write_method_macro(iface->ref, iface->name);
 855   fprintf(header, "#endif\n");
 856   fprintf(header, "\n");
 857   fprintf(header, "#endif\n");
 858   fprintf(header, "\n");
 859   fprintf(header,"#endif  /* __%s_DISPINTERFACE_DEFINED__ */\n\n", iface->name);
 860 }
 861
 862 void write_coclass(class_t *cocl)
 863 {
 864   fprintf(header, "/*****************************************************************************\n");
 865   fprintf(header, " * %s coclass\n", cocl->name);
 866   fprintf(header, " */\n\n");
 867   write_coclass_guid(cocl);
 868   fprintf(header, "\n");
 869 }