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 "widl.h"
  34 #include "utils.h"
  35 #include "parser.h"
  36 #include "header.h"
  37 #include "proxy.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 DWORD 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_pident(FILE *h, var_t *v)
  84 {
  85   int c;
  86   for (c=0; c<v->ptr_level; c++) {
  87     fprintf(h, "*");
  88   }
  89   if (v->name) fprintf(h, "%s", v->name);
  90 }
  91
  92 void write_name(FILE *h, var_t *v)
  93 {
  94   fprintf(h, "%s", v->name);
  95 }
  96
  97 char* get_name(var_t *v)
  98 {
  99   return v->name;
 100 }
 101
 102 static void write_array(FILE *h, expr_t *v, int field)
 103 {
 104   if (!v) return;
 105   while (NEXT_LINK(v)) v = NEXT_LINK(v);
 106   fprintf(h, "[");
 107   while (v) {
 108     if (v->is_const)
 109       fprintf(h, "%ld", v->cval); /* statically sized array */
 110     else
 111       if (field) fprintf(h, "1"); /* dynamically sized array */
 112     if (PREV_LINK(v))
 113       fprintf(h, ", ");
 114     v = PREV_LINK(v);
 115   }
 116   fprintf(h, "]");
 117 }
 118
 119 static void write_field(FILE *h, var_t *v)
 120 {
 121   if (!v) return;
 122   if (v->type) {
 123     indent(0);
 124     write_type(h, v->type, NULL, v->tname);
 125     if (get_name(v)) {
 126       fprintf(h, " ");
 127       write_pident(h, v);
 128     }
 129     else {
 130       /* not all C/C++ compilers support anonymous structs and unions */
 131       switch (v->type->type) {
 132       case RPC_FC_STRUCT:
 133       case RPC_FC_ENCAPSULATED_UNION:
 134         fprintf(h, " DUMMYSTRUCTNAME");
 135         break;
 136       case RPC_FC_NON_ENCAPSULATED_UNION:
 137         fprintf(h, " DUMMYUNIONNAME");
 138         break;
 139       default:
 140         /* ? */
 141         break;
 142       }
 143     }
 144     write_array(h, v->array, 1);
 145     fprintf(h, ";\n");
 146   }
 147 }
 148
 149 static void write_fields(FILE *h, var_t *v)
 150 {
 151   var_t *first = v;
 152   if (!v) return;
 153   while (NEXT_LINK(v)) v = NEXT_LINK(v);
 154   while (v) {
 155     write_field(h, v);
 156     if (v == first) break;
 157     v = PREV_LINK(v);
 158   }
 159 }
 160
 161 static void write_enums(FILE *h, var_t *v)
 162 {
 163   if (!v) return;
 164   while (NEXT_LINK(v)) v = NEXT_LINK(v);
 165   while (v) {
 166     if (get_name(v)) {
 167       indent(0);
 168       write_name(h, v);
 169       if (v->eval) {
 170         fprintf(h, " = ");
 171         write_expr(h, v->eval);
 172       }
 173     }
 174     if (PREV_LINK(v))
 175       fprintf(h, ",\n");
 176     v = PREV_LINK(v);
 177   }
 178   fprintf(h, "\n");
 179 }
 180
 181 void write_type(FILE *h, type_t *t, var_t *v, char *n)
 182 {
 183   int c;
 184
 185   if (n) fprintf(h, "%s", n);
 186   else {
 187     if (t->is_const) fprintf(h, "const ");
 188     if (t->type) {
 189       if (t->sign > 0) fprintf(h, "signed ");
 190       else if (t->sign < 0) fprintf(h, "unsigned ");
 191       switch (t->type) {
 192       case RPC_FC_BYTE:
 193         if (t->ref) fprintf(h, t->ref->name);
 194         else fprintf(h, "byte");
 195         break;
 196       case RPC_FC_CHAR:
 197         if (t->ref) fprintf(h, t->ref->name);
 198         else fprintf(h, "char");
 199         break;
 200       case RPC_FC_WCHAR:
 201         fprintf(h, "wchar_t");
 202         break;
 203       case RPC_FC_USHORT:
 204       case RPC_FC_SHORT:
 205         if (t->ref) fprintf(h, t->ref->name);
 206         else fprintf(h, "short");
 207         break;
 208       case RPC_FC_ULONG:
 209       case RPC_FC_LONG:
 210         if (t->ref) fprintf(h, t->ref->name);
 211         else fprintf(h, "long");
 212         break;
 213       case RPC_FC_HYPER:
 214         if (t->ref) fprintf(h, t->ref->name);
 215         else fprintf(h, "hyper");
 216         break;
 217       case RPC_FC_FLOAT:
 218         fprintf(h, "float");
 219         break;
 220       case RPC_FC_DOUBLE:
 221         fprintf(h, "double");
 222         break;
 223       case RPC_FC_ENUM16:
 224       case RPC_FC_ENUM32:
 225         if (t->defined && !t->written) {
 226           if (t->name) fprintf(h, "enum %s {\n", t->name);
 227           else fprintf(h, "enum {\n");
 228           t->written = TRUE;
 229           indentation++;
 230           write_enums(h, t->fields);
 231           indent(-1);
 232           fprintf(h, "}");
 233         }
 234         else fprintf(h, "enum %s", t->name);
 235         break;
 236       case RPC_FC_ERROR_STATUS_T:
 237         if (t->ref) fprintf(h, t->ref->name);
 238         else fprintf(h, "error_status_t");
 239         break;
 240       case RPC_FC_BIND_PRIMITIVE:
 241         if (t->ref) fprintf(h, t->ref->name);
 242         else fprintf(h, "handle_t");
 243         break;
 244       case RPC_FC_STRUCT:
 245       case RPC_FC_ENCAPSULATED_UNION:
 246         if (t->defined && !t->written) {
 247           if (t->name) fprintf(h, "struct %s {\n", t->name);
 248           else fprintf(h, "struct {\n");
 249           t->written = TRUE;
 250           indentation++;
 251           write_fields(h, t->fields);
 252           indent(-1);
 253           fprintf(h, "}");
 254         }
 255         else fprintf(h, "struct %s", t->name);
 256         break;
 257       case RPC_FC_NON_ENCAPSULATED_UNION:
 258         if (t->defined && !t->written) {
 259           if (t->name) fprintf(h, "union %s {\n", t->name);
 260           else fprintf(h, "union {\n");
 261           t->written = TRUE;
 262           indentation++;
 263           write_fields(h, t->fields);
 264           indent(-1);
 265           fprintf(h, "}");
 266         }
 267         else fprintf(h, "union %s", t->name);
 268         break;
 269       default:
 270         fprintf(h, "(unknown-type:%d)", t->type);
 271       }
 272     }
 273     else {
 274       if (t->ref) {
 275         write_type(h, t->ref, NULL, t->name);
 276       }
 277       else fprintf(h, "void");
 278     }
 279   }
 280   if (v) {
 281     for (c=0; c<v->ptr_level; c++) {
 282       fprintf(h, "*");
 283     }
 284   }
 285 }
 286
 287 void write_typedef(type_t *type, var_t *names)
 288 {
 289   char *tname = names->tname;
 290   var_t *lname;
 291   while (NEXT_LINK(names)) names = NEXT_LINK(names);
 292   lname = names;
 293   fprintf(header, "typedef ");
 294   write_type(header, type, NULL, tname);
 295   fprintf(header, " ");
 296   while (names) {
 297     write_pident(header, names);
 298     if (PREV_LINK(names))
 299       fprintf(header, ", ");
 300     names = PREV_LINK(names);
 301   }
 302   fprintf(header, ";\n");
 303
 304   if (get_attrp(type->attrs, ATTR_WIREMARSHAL)) {
 305     names = lname;
 306     while (names) {
 307       char *name = get_name(names);
 308       fprintf(header, "unsigned long   __RPC_USER %s_UserSize     (unsigned long *, unsigned long,   %s *);\n", name, name);
 309       fprintf(header, "unsigned char * __RPC_USER %s_UserMarshal  (unsigned long *, unsigned char *, %s *);\n", name, name);
 310       fprintf(header, "unsigned char * __RPC_USER %s_UserUnmarshal(unsigned long *, unsigned char *, %s *);\n", name, name);
 311       fprintf(header, "void            __RPC_USER %s_UserFree     (unsigned long *, %s *);\n", name, name);
 312       if (PREV_LINK(names))
 313         fprintf(header, ", ");
 314       names = PREV_LINK(names);
 315     }
 316   }
 317
 318   fprintf(header, "\n");
 319 }
 320
 321 static void do_write_expr(FILE *h, expr_t *e, int p)
 322 {
 323   switch (e->type) {
 324   case EXPR_VOID:
 325     break;
 326   case EXPR_NUM:
 327     fprintf(h, "%ld", e->u.lval);
 328     break;
 329   case EXPR_HEXNUM:
 330     fprintf(h, "0x%lx", e->u.lval);
 331     break;
 332   case EXPR_IDENTIFIER:
 333     fprintf(h, "%s", e->u.sval);
 334     break;
 335   case EXPR_NEG:
 336     fprintf(h, "-");
 337     do_write_expr(h, e->ref, 1);
 338     break;
 339   case EXPR_NOT:
 340     fprintf(h, "~");
 341     do_write_expr(h, e->ref, 1);
 342     break;
 343   case EXPR_PPTR:
 344     fprintf(h, "*");
 345     do_write_expr(h, e->ref, 1);
 346     break;
 347   case EXPR_CAST:
 348     fprintf(h, "(");
 349     write_type(h, e->u.tref->ref, NULL, e->u.tref->name);
 350     fprintf(h, ")");
 351     do_write_expr(h, e->ref, 1);
 352     break;
 353   case EXPR_SIZEOF:
 354     fprintf(h, "sizeof(");
 355     write_type(h, e->u.tref->ref, NULL, e->u.tref->name);
 356     fprintf(h, ")");
 357     break;
 358   case EXPR_SHL:
 359   case EXPR_SHR:
 360   case EXPR_MUL:
 361   case EXPR_DIV:
 362   case EXPR_ADD:
 363   case EXPR_SUB:
 364   case EXPR_AND:
 365   case EXPR_OR:
 366     if (p) fprintf(h, "(");
 367     do_write_expr(h, e->ref, 1);
 368     switch (e->type) {
 369     case EXPR_SHL: fprintf(h, " << "); break;
 370     case EXPR_SHR: fprintf(h, " >> "); break;
 371     case EXPR_MUL: fprintf(h, " * "); break;
 372     case EXPR_DIV: fprintf(h, " / "); break;
 373     case EXPR_ADD: fprintf(h, " + "); break;
 374     case EXPR_SUB: fprintf(h, " - "); break;
 375     case EXPR_AND: fprintf(h, " & "); break;
 376     case EXPR_OR:  fprintf(h, " | "); break;
 377     default: break;
 378     }
 379     do_write_expr(h, e->u.ext, 1);
 380     if (p) fprintf(h, ")");
 381     break;
 382   }
 383 }
 384
 385 void write_expr(FILE *h, expr_t *e)
 386 {
 387   do_write_expr(h, e, 0);
 388 }
 389
 390 void write_constdef(var_t *v)
 391 {
 392   fprintf(header, "#define %s (", get_name(v));
 393   write_expr(header, v->eval);
 394   fprintf(header, ")\n\n");
 395 }
 396
 397 void write_externdef(var_t *v)
 398 {
 399   fprintf(header, "extern const ");
 400   write_type(header, v->type, NULL, v->tname);
 401   if (get_name(v)) {
 402     fprintf(header, " ");
 403     write_pident(header, v);
 404   }
 405   fprintf(header, ";\n\n");
 406 }
 407
 408 /********** INTERFACES **********/
 409
 410 int is_object(attr_t *a)
 411 {
 412   return is_attr(a, ATTR_OBJECT);
 413 }
 414
 415 int is_local(attr_t *a)
 416 {
 417   return is_attr(a, ATTR_LOCAL);
 418 }
 419
 420 var_t *is_callas(attr_t *a)
 421 {
 422   return get_attrp(a, ATTR_CALLAS);
 423 }
 424
 425 static void write_icom_method_def(type_t *iface)
 426 {
 427   func_t *cur = iface->funcs;
 428   if (iface->ref) write_icom_method_def( iface->ref );
 429   while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
 430   if (cur) fprintf( header, " \\\n    /*** %s methods ***/", iface->name );
 431   while (cur) {
 432     var_t *def = cur->def;
 433     if (!is_callas(def->attrs)) {
 434       var_t *arg = cur->args;
 435
 436       if (arg) {
 437         while (NEXT_LINK(arg)) {
 438           arg = NEXT_LINK(arg);
 439         }
 440       }
 441       fprintf(header, " \\\n    STDMETHOD_(");
 442       write_type(header, def->type, def, def->tname);
 443       fprintf(header, ",");
 444       write_name(header, def);
 445       fprintf(header, ")(%s", arg ? "THIS_ " : "THIS" );
 446       while (arg) {
 447         write_type(header, arg->type, arg, arg->tname);
 448         fprintf(header, " ");
 449         write_name(header,arg);
 450         write_array(header, arg->array, 0);
 451         arg = PREV_LINK(arg);
 452         if (arg) fprintf(header, ", ");
 453       }
 454       fprintf(header, ") PURE;");
 455     }
 456     cur = PREV_LINK(cur);
 457   }
 458 }
 459
 460 static int write_method_macro(type_t *iface, char *name)
 461 {
 462   int idx;
 463   func_t *cur = iface->funcs;
 464   while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
 465
 466   if (iface->ref) idx = write_method_macro(iface->ref, name);
 467   else idx = 0;
 468   fprintf(header, "/*** %s methods ***/\n", iface->name);
 469   while (cur) {
 470     var_t *def = cur->def;
 471     if (!is_callas(def->attrs)) {
 472       var_t *arg = cur->args;
 473       int argc = 0;
 474       int c;
 475       while (arg) {
 476         arg = NEXT_LINK(arg);
 477         argc++;
 478       }
 479
 480       fprintf(header, "#define %s_", name);
 481       write_name(header,def);
 482       fprintf(header, "(p");
 483       for (c=0; c<argc; c++)
 484         fprintf(header, ",%c", c+'a');
 485       fprintf(header, ") ");
 486
 487       fprintf(header, "(p)->lpVtbl->");
 488       write_name(header, def);
 489       fprintf(header, "(p");
 490       for (c=0; c<argc; c++)
 491         fprintf(header, ",%c", c+'a');
 492       fprintf(header, ")\n");
 493       if (cur->idx == -1) cur->idx = idx;
 494       else if (cur->idx != idx) yyerror("BUG: method index mismatch in write_method_macro");
 495       idx++;
 496     }
 497     cur = PREV_LINK(cur);
 498   }
 499   return idx;
 500 }
 501
 502 void write_args(FILE *h, var_t *arg, char *name, int method)
 503 {
 504   int count = 0;
 505   if (arg) {
 506     while (NEXT_LINK(arg))
 507       arg = NEXT_LINK(arg);
 508   }
 509   if (h == header) {
 510     indentation++;
 511     indent(0);
 512   } else fprintf(h, "    ");
 513   if (method == 1) {
 514     fprintf(h, "%s* This", name);
 515     count++;
 516   }
 517   while (arg) {
 518     if (count) {
 519       fprintf(h, ",\n");
 520       if (h == header) indent(0);
 521       else fprintf(h, "    ");
 522     }
 523     write_type(h, arg->type, arg, arg->tname);
 524     fprintf(h, " ");
 525     write_name(h, arg);
 526     write_array(h, arg->array, 0);
 527     arg = PREV_LINK(arg);
 528     count++;
 529   }
 530   if (h == header) indentation--;
 531 }
 532
 533 static void write_cpp_method_def(type_t *iface)
 534 {
 535   func_t *cur = iface->funcs;
 536   while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
 537   while (cur) {
 538     var_t *def = cur->def;
 539     if (!is_callas(def->attrs)) {
 540       indent(0);
 541       fprintf(header, "virtual ");
 542       write_type(header, def->type, def, def->tname);
 543       fprintf(header, " STDMETHODCALLTYPE ");
 544       write_name(header, def);
 545       fprintf(header, "(\n");
 546       write_args(header, cur->args, iface->name, 2);
 547       fprintf(header, ") = 0;\n");
 548       fprintf(header, "\n");
 549     }
 550     cur = PREV_LINK(cur);
 551   }
 552 }
 553
 554 static void do_write_c_method_def(type_t *iface, char *name)
 555 {
 556   func_t *cur = iface->funcs;
 557   while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
 558
 559   if (iface->ref) do_write_c_method_def(iface->ref, name);
 560   indent(0);
 561   fprintf(header, "/*** %s methods ***/\n", iface->name);
 562   while (cur) {
 563     var_t *def = cur->def;
 564     if (!is_callas(def->attrs)) {
 565       indent(0);
 566       write_type(header, def->type, def, def->tname);
 567       fprintf(header, " (STDMETHODCALLTYPE *");
 568       write_name(header, def);
 569       fprintf(header, ")(\n");
 570       write_args(header, cur->args, name, 1);
 571       fprintf(header, ");\n");
 572       fprintf(header, "\n");
 573     }
 574     cur = PREV_LINK(cur);
 575   }
 576 }
 577
 578 static void write_c_method_def(type_t *iface)
 579 {
 580   do_write_c_method_def(iface, iface->name);
 581 }
 582
 583 static void write_method_proto(type_t *iface)
 584 {
 585   func_t *cur = iface->funcs;
 586   while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
 587   while (cur) {
 588     var_t *def = cur->def;
 589     var_t *cas = is_callas(def->attrs);
 590     if (!is_local(def->attrs)) {
 591       /* proxy prototype */
 592       write_type(header, def->type, def, def->tname);
 593       fprintf(header, " CALLBACK %s_", iface->name);
 594       write_name(header, def);
 595       fprintf(header, "_Proxy(\n");
 596       write_args(header, cur->args, iface->name, 1);
 597       fprintf(header, ");\n");
 598       /* stub prototype */
 599       fprintf(header, "void __RPC_STUB %s_", iface->name);
 600       write_name(header,def);
 601       fprintf(header, "_Stub(\n");
 602       fprintf(header, "    struct IRpcStubBuffer* This,\n");
 603       fprintf(header, "    struct IRpcChannelBuffer* pRpcChannelBuffer,\n");
 604       fprintf(header, "    PRPC_MESSAGE pRpcMessage,\n");
 605       fprintf(header, "    DWORD* pdwStubPhase);\n");
 606     }
 607     if (cas) {
 608       func_t *m = iface->funcs;
 609       while (m && strcmp(get_name(m->def), cas->name))
 610         m = NEXT_LINK(m);
 611       if (m) {
 612         var_t *mdef = m->def;
 613         /* proxy prototype - use local prototype */
 614         write_type(header, mdef->type, mdef, mdef->tname);
 615         fprintf(header, " CALLBACK %s_", iface->name);
 616         write_name(header, mdef);
 617         fprintf(header, "_Proxy(\n");
 618         write_args(header, m->args, iface->name, 1);
 619         fprintf(header, ");\n");
 620         /* stub prototype - use remotable prototype */
 621         write_type(header, def->type, def, def->tname);
 622         fprintf(header, " __RPC_STUB %s_", iface->name);
 623         write_name(header, mdef);
 624         fprintf(header, "_Stub(\n");
 625         write_args(header, cur->args, iface->name, 1);
 626         fprintf(header, ");\n");
 627       }
 628       else {
 629         yywarning("invalid call_as attribute (%s -> %s)\n", get_name(def), cas->name);
 630       }
 631     }
 632
 633     cur = PREV_LINK(cur);
 634   }
 635 }
 636
 637 static void write_function_proto(type_t *iface)
 638 {
 639   func_t *cur = iface->funcs;
 640   while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
 641   while (cur) {
 642     var_t *def = cur->def;
 643     /* FIXME: do we need to handle call_as? */
 644     write_type(header, def->type, def, def->tname);
 645     fprintf(header, " ");
 646     write_name(header, def);
 647     fprintf(header, "(\n");
 648     write_args(header, cur->args, iface->name, 0);
 649     fprintf(header, ");\n");
 650
 651     cur = PREV_LINK(cur);
 652   }
 653 }
 654
 655 void write_forward(type_t *iface)
 656 {
 657   /* C/C++ forwards should only be written for object interfaces, so if we
 658    * have a full definition we only write one if we find [object] among the
 659    * attributes - however, if we don't have a full definition at this point
 660    * (i.e. this is an IDL forward), then we also assume that it is an object
 661    * interface, since non-object interfaces shouldn't need forwards */
 662   if ((!iface->defined || is_object(iface->attrs)) && !iface->written) {
 663     fprintf(header,"#ifndef __%s_FWD_DEFINED__\n", iface->name);
 664     fprintf(header,"#define __%s_FWD_DEFINED__\n", iface->name);
 665     fprintf(header, "typedef struct %s %s;\n", iface->name, iface->name);
 666     fprintf(header, "#endif\n\n" );
 667     iface->written = TRUE;
 668   }
 669 }
 670
 671 void write_guid(type_t *iface)
 672 {
 673   UUID *uuid = get_attrp(iface->attrs, ATTR_UUID);
 674   if (!uuid) return;
 675   fprintf(header, "DEFINE_GUID(IID_%s, 0x%08lx, 0x%04x, 0x%04x, 0x%02x,0x%02x, 0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x);\n",
 676           iface->name, uuid->Data1, uuid->Data2, uuid->Data3, uuid->Data4[0], uuid->Data4[1],
 677           uuid->Data4[2], uuid->Data4[3], uuid->Data4[4], uuid->Data4[5], uuid->Data4[6], uuid->Data4[7]);
 678 }
 679
 680 void write_com_interface(type_t *iface)
 681 {
 682   if (!iface->funcs) {
 683     yywarning("%s has no methods", iface->name);
 684     return;
 685   }
 686
 687   fprintf(header, "/*****************************************************************************\n");
 688   fprintf(header, " * %s interface\n", iface->name);
 689   fprintf(header, " */\n");
 690   fprintf(header,"#ifndef __%s_INTERFACE_DEFINED__\n", iface->name);
 691   fprintf(header,"#define __%s_INTERFACE_DEFINED__\n\n", iface->name);
 692   write_guid(iface);
 693   write_forward(iface);
 694   /* C++ interface */
 695   fprintf(header, "#if defined(__cplusplus) && !defined(CINTERFACE)\n");
 696   if (iface->ref)
 697       fprintf(header, "struct %s : public %s\n", iface->name, iface->ref->name);
 698   else
 699   {
 700       fprintf(header, "#ifdef ICOM_USE_COM_INTERFACE_ATTRIBUTE\n");
 701       fprintf(header, "struct __attribute__((com_interface)) %s\n", iface->name);
 702       fprintf(header, "#else\n");
 703       fprintf(header, "struct %s\n", iface->name);
 704       fprintf(header, "#endif\n");
 705   }
 706   fprintf(header, "{\n");
 707   indentation++;
 708   write_cpp_method_def(iface);
 709   indentation--;
 710   fprintf(header, "};\n");
 711   fprintf(header, "#else\n");
 712   /* C interface */
 713   fprintf(header, "typedef struct %sVtbl %sVtbl;\n", iface->name, iface->name);
 714   fprintf(header, "struct %s {\n", iface->name);
 715   fprintf(header, "    const %sVtbl* lpVtbl;\n", iface->name);
 716   fprintf(header, "};\n");
 717   fprintf(header, "struct %sVtbl {\n", iface->name);
 718   indentation++;
 719   fprintf(header, "    ICOM_MSVTABLE_COMPAT_FIELDS\n");
 720   fprintf(header, "\n");
 721   write_c_method_def(iface);
 722   indentation--;
 723   fprintf(header, "};\n");
 724   fprintf(header, "\n");
 725   write_method_macro(iface, iface->name);
 726   fprintf(header, "\n");
 727   fprintf(header, "#endif\n");
 728   fprintf(header, "\n");
 729   if (compat_icom) {
 730       fprintf(header, "#define %s_METHODS \\\n", iface->name);
 731       fprintf(header, "    ICOM_MSVTABLE_COMPAT_FIELDS");
 732       write_icom_method_def(iface);
 733       fprintf(header, "\n\n");
 734   }
 735   write_method_proto(iface);
 736   fprintf(header, "\n");
 737
 738   if (!is_local(iface->attrs))
 739     write_proxy(iface);
 740   fprintf(header,"#endif  /* __%s_INTERFACE_DEFINED__ */\n\n", iface->name);
 741 }
 742
 743 void write_rpc_interface(type_t *iface)
 744 {
 745   DWORD ver = get_attrv(iface->attrs, ATTR_VERSION);
 746
 747   if (!iface->funcs) return;
 748
 749   fprintf(header, "/*****************************************************************************\n");
 750   fprintf(header, " * %s interface (v%d.%d)\n", iface->name, LOWORD(ver), HIWORD(ver));
 751   fprintf(header, " */\n");
 752   write_guid(iface);
 753   fprintf(header, "extern RPC_IF_HANDLE %s_v%d_%d_c_ifspec;\n", iface->name, LOWORD(ver), HIWORD(ver));
 754   fprintf(header, "extern RPC_IF_HANDLE %s_v%d_%d_s_ifspec;\n", iface->name, LOWORD(ver), HIWORD(ver));
 755   write_function_proto(iface);
 756   fprintf(header, "\n");
 757
 758   /* FIXME: server/client code */
 759 }
 760
 761 void write_interface(type_t *iface)
 762 {
 763   if (is_object(iface->attrs))
 764     write_com_interface(iface);
 765   else
 766     write_rpc_interface(iface);
 767 }