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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #ifdef HAVE_UNISTD_H
  27 # include <unistd.h>
  28 #endif
  29 #include <string.h>
  30 #include <ctype.h>
  31
  32 #include "widl.h"
  33 #include "utils.h"
  34 #include "parser.h"
  35 #include "header.h"
  36
  37 static int indentation = 0;
  38 user_type_list_t user_type_list = LIST_INIT(user_type_list);
  39 static context_handle_list_t context_handle_list = LIST_INIT(context_handle_list);
  40
  41 static void indent(FILE *h, int delta)
  42 {
  43   int c;
  44   if (delta < 0) indentation += delta;
  45   for (c=0; c<indentation; c++) fprintf(h, "    ");
  46   if (delta > 0) indentation += delta;
  47 }
  48
  49 int is_ptrchain_attr(const var_t *var, enum attr_type t)
  50 {
  51     if (is_attr(var->attrs, t))
  52         return 1;
  53     else
  54     {
  55         type_t *type = var->type;
  56         for (;;)
  57         {
  58             if (is_attr(type->attrs, t))
  59                 return 1;
  60             else if (type->kind == TKIND_ALIAS)
  61                 type = type->orig;
  62             else if (is_ptr(type))
  63                 type = type->ref;
  64             else return 0;
  65         }
  66     }
  67 }
  68
  69 int is_aliaschain_attr(const type_t *type, enum attr_type attr)
  70 {
  71     const type_t *t = type;
  72     for (;;)
  73     {
  74         if (is_attr(t->attrs, attr))
  75             return 1;
  76         else if (t->kind == TKIND_ALIAS)
  77             t = t->orig;
  78         else return 0;
  79     }
  80 }
  81
  82 int is_attr(const attr_list_t *list, enum attr_type t)
  83 {
  84     const attr_t *attr;
  85     if (list) LIST_FOR_EACH_ENTRY( attr, list, const attr_t, entry )
  86         if (attr->type == t) return 1;
  87     return 0;
  88 }
  89
  90 void *get_attrp(const attr_list_t *list, enum attr_type t)
  91 {
  92     const attr_t *attr;
  93     if (list) LIST_FOR_EACH_ENTRY( attr, list, const attr_t, entry )
  94         if (attr->type == t) return attr->u.pval;
  95     return NULL;
  96 }
  97
  98 unsigned long get_attrv(const attr_list_t *list, enum attr_type t)
  99 {
 100     const attr_t *attr;
 101     if (list) LIST_FOR_EACH_ENTRY( attr, list, const attr_t, entry )
 102         if (attr->type == t) return attr->u.ival;
 103     return 0;
 104 }
 105
 106 int is_void(const type_t *t)
 107 {
 108   if (!t->type && !t->ref) return 1;
 109   return 0;
 110 }
 111
 112 int is_conformant_array(const type_t *t)
 113 {
 114     return t->type == RPC_FC_CARRAY
 115         || t->type == RPC_FC_CVARRAY
 116         || (t->type == RPC_FC_BOGUS_ARRAY && t->size_is);
 117 }
 118
 119 void write_guid(FILE *f, const char *guid_prefix, const char *name, const UUID *uuid)
 120 {
 121   if (!uuid) return;
 122   fprintf(f, "DEFINE_GUID(%s_%s, 0x%08x, 0x%04x, 0x%04x, 0x%02x,0x%02x, 0x%02x,"
 123         "0x%02x,0x%02x,0x%02x,0x%02x,0x%02x);\n",
 124         guid_prefix, name, uuid->Data1, uuid->Data2, uuid->Data3, uuid->Data4[0],
 125         uuid->Data4[1], uuid->Data4[2], uuid->Data4[3], uuid->Data4[4], uuid->Data4[5],
 126         uuid->Data4[6], uuid->Data4[7]);
 127 }
 128
 129 void write_name(FILE *h, const var_t *v)
 130 {
 131   if (is_attr( v->attrs, ATTR_PROPGET ))
 132     fprintf(h, "get_" );
 133   else if (is_attr( v->attrs, ATTR_PROPPUT ))
 134     fprintf(h, "put_" );
 135   else if (is_attr( v->attrs, ATTR_PROPPUTREF ))
 136     fprintf(h, "putref_" );
 137   fprintf(h, "%s", v->name);
 138 }
 139
 140 void write_prefix_name(FILE *h, const char *prefix, const var_t *v)
 141 {
 142   fprintf(h, "%s", prefix);
 143   write_name(h, v);
 144 }
 145
 146 static void write_field(FILE *h, var_t *v)
 147 {
 148   if (!v) return;
 149   if (v->type) {
 150     const char *name = v->name;
 151     if (name == NULL) {
 152       switch (v->type->type) {
 153       case RPC_FC_STRUCT:
 154       case RPC_FC_CVSTRUCT:
 155       case RPC_FC_CPSTRUCT:
 156       case RPC_FC_CSTRUCT:
 157       case RPC_FC_PSTRUCT:
 158       case RPC_FC_BOGUS_STRUCT:
 159       case RPC_FC_ENCAPSULATED_UNION:
 160         name = "DUMMYSTRUCTNAME";
 161         break;
 162       case RPC_FC_NON_ENCAPSULATED_UNION:
 163         name = "DUMMYUNIONNAME";
 164         break;
 165       default:
 166         /* ? */
 167         break;
 168       }
 169     }
 170     indent(h, 0);
 171     write_type_def_or_decl(h, v->type, TRUE, "%s", name);
 172     fprintf(h, ";\n");
 173   }
 174 }
 175
 176 static void write_fields(FILE *h, var_list_t *fields)
 177 {
 178     var_t *v;
 179     if (!fields) return;
 180     LIST_FOR_EACH_ENTRY( v, fields, var_t, entry ) write_field(h, v);
 181 }
 182
 183 static void write_enums(FILE *h, var_list_t *enums)
 184 {
 185   var_t *v;
 186   if (!enums) return;
 187   LIST_FOR_EACH_ENTRY( v, enums, var_t, entry )
 188   {
 189     if (v->name) {
 190       indent(h, 0);
 191       write_name(h, v);
 192       if (v->eval) {
 193         fprintf(h, " = ");
 194         write_expr(h, v->eval, 0);
 195       }
 196     }
 197     if (list_next( enums, &v->entry )) fprintf(h, ",\n");
 198   }
 199   fprintf(h, "\n");
 200 }
 201
 202 int needs_space_after(type_t *t)
 203 {
 204   return (t->kind == TKIND_ALIAS
 205           || (!is_ptr(t) && (!is_conformant_array(t) || t->declarray)));
 206 }
 207
 208 void write_type_left(FILE *h, type_t *t, int declonly)
 209 {
 210   if (!h) return;
 211
 212   if (t->is_const) fprintf(h, "const ");
 213
 214   if (t->kind == TKIND_ALIAS) fprintf(h, "%s", t->name);
 215   else if (t->declarray) write_type_left(h, t->ref, declonly);
 216   else {
 217     if (t->sign > 0) fprintf(h, "signed ");
 218     else if (t->sign < 0) fprintf(h, "unsigned ");
 219     switch (t->type) {
 220       case RPC_FC_ENUM16:
 221       case RPC_FC_ENUM32:
 222         if (!declonly && t->defined && !t->written && !t->ignore) {
 223           if (t->name) fprintf(h, "enum %s {\n", t->name);
 224           else fprintf(h, "enum {\n");
 225           t->written = TRUE;
 226           indentation++;
 227           write_enums(h, t->fields);
 228           indent(h, -1);
 229           fprintf(h, "}");
 230         }
 231         else fprintf(h, "enum %s", t->name ? t->name : "");
 232         break;
 233       case RPC_FC_STRUCT:
 234       case RPC_FC_CVSTRUCT:
 235       case RPC_FC_CPSTRUCT:
 236       case RPC_FC_CSTRUCT:
 237       case RPC_FC_PSTRUCT:
 238       case RPC_FC_BOGUS_STRUCT:
 239       case RPC_FC_ENCAPSULATED_UNION:
 240         if (!declonly && t->defined && !t->written && !t->ignore) {
 241           if (t->name) fprintf(h, "struct %s {\n", t->name);
 242           else fprintf(h, "struct {\n");
 243           t->written = TRUE;
 244           indentation++;
 245           write_fields(h, t->fields);
 246           indent(h, -1);
 247           fprintf(h, "}");
 248         }
 249         else fprintf(h, "struct %s", t->name ? t->name : "");
 250         break;
 251       case RPC_FC_NON_ENCAPSULATED_UNION:
 252         if (!declonly && t->defined && !t->written && !t->ignore) {
 253           if (t->name) fprintf(h, "union %s {\n", t->name);
 254           else fprintf(h, "union {\n");
 255           t->written = TRUE;
 256           indentation++;
 257           write_fields(h, t->fields);
 258           indent(h, -1);
 259           fprintf(h, "}");
 260         }
 261         else fprintf(h, "union %s", t->name ? t->name : "");
 262         break;
 263       case RPC_FC_RP:
 264       case RPC_FC_UP:
 265       case RPC_FC_FP:
 266       case RPC_FC_OP:
 267       case RPC_FC_CARRAY:
 268       case RPC_FC_CVARRAY:
 269       case RPC_FC_BOGUS_ARRAY:
 270         write_type_left(h, t->ref, declonly);
 271         fprintf(h, "%s*", needs_space_after(t->ref) ? " " : "");
 272         break;
 273       default:
 274         fprintf(h, "%s", t->name);
 275     }
 276   }
 277 }
 278
 279 void write_type_right(FILE *h, type_t *t, int is_field)
 280 {
 281   if (!h) return;
 282
 283   if (t->declarray) {
 284     if (is_conformant_array(t)) {
 285       fprintf(h, "[%s]", is_field ? "1" : "");
 286       t = t->ref;
 287     }
 288     for ( ; t->declarray; t = t->ref)
 289       fprintf(h, "[%lu]", t->dim);
 290   }
 291 }
 292
 293 void write_type_v(FILE *h, type_t *t, int is_field, int declonly,
 294                   const char *fmt, va_list args)
 295 {
 296   if (!h) return;
 297
 298   write_type_left(h, t, declonly);
 299   if (fmt) {
 300     if (needs_space_after(t))
 301       fprintf(h, " ");
 302     vfprintf(h, fmt, args);
 303   }
 304   write_type_right(h, t, is_field);
 305 }
 306
 307 void write_type_def_or_decl(FILE *f, type_t *t, int field, const char *fmt, ...)
 308 {
 309   va_list args;
 310   va_start(args, fmt);
 311   write_type_v(f, t, field, FALSE, fmt, args);
 312   va_end(args);
 313 }
 314
 315 void write_type_decl(FILE *f, type_t *t, const char *fmt, ...)
 316 {
 317   va_list args;
 318   va_start(args, fmt);
 319   write_type_v(f, t, FALSE, TRUE, fmt, args);
 320   va_end(args);
 321 }
 322
 323 void write_type_decl_left(FILE *f, type_t *t)
 324 {
 325   write_type_left(f, t, TRUE);
 326 }
 327
 328 static int user_type_registered(const char *name)
 329 {
 330   user_type_t *ut;
 331   LIST_FOR_EACH_ENTRY(ut, &user_type_list, user_type_t, entry)
 332     if (!strcmp(name, ut->name))
 333       return 1;
 334   return 0;
 335 }
 336
 337 static int context_handle_registered(const char *name)
 338 {
 339   context_handle_t *ch;
 340   LIST_FOR_EACH_ENTRY(ch, &context_handle_list, context_handle_t, entry)
 341     if (!strcmp(name, ch->name))
 342       return 1;
 343   return 0;
 344 }
 345
 346 void check_for_user_types_and_context_handles(const var_list_t *list)
 347 {
 348   const var_t *v;
 349
 350   if (!list) return;
 351   LIST_FOR_EACH_ENTRY( v, list, const var_t, entry )
 352   {
 353     type_t *type;
 354     for (type = v->type; type; type = type->kind == TKIND_ALIAS ? type->orig : type->ref) {
 355       const char *name = type->name;
 356       if (type->user_types_registered) continue;
 357       type->user_types_registered = 1;
 358       if (is_attr(type->attrs, ATTR_CONTEXTHANDLE)) {
 359         if (!context_handle_registered(name))
 360         {
 361           context_handle_t *ch = xmalloc(sizeof(*ch));
 362           ch->name = xstrdup(name);
 363           list_add_tail(&context_handle_list, &ch->entry);
 364         }
 365         /* don't carry on parsing fields within this type */
 366         break;
 367       }
 368       if (is_attr(type->attrs, ATTR_WIREMARSHAL)) {
 369         if (!user_type_registered(name))
 370         {
 371           user_type_t *ut = xmalloc(sizeof *ut);
 372           ut->name = xstrdup(name);
 373           list_add_tail(&user_type_list, &ut->entry);
 374         }
 375         /* don't carry on parsing fields within this type as we are already
 376          * using a wire marshaled type */
 377         break;
 378       }
 379       else
 380       {
 381         check_for_user_types_and_context_handles(type->fields);
 382       }
 383     }
 384   }
 385 }
 386
 387 void write_user_types(void)
 388 {
 389   user_type_t *ut;
 390   LIST_FOR_EACH_ENTRY(ut, &user_type_list, user_type_t, entry)
 391   {
 392     const char *name = ut->name;
 393     fprintf(header, "ULONG           __RPC_USER %s_UserSize     (ULONG *, ULONG, %s *);\n", name, name);
 394     fprintf(header, "unsigned char * __RPC_USER %s_UserMarshal  (ULONG *, unsigned char *, %s *);\n", name, name);
 395     fprintf(header, "unsigned char * __RPC_USER %s_UserUnmarshal(ULONG *, unsigned char *, %s *);\n", name, name);
 396     fprintf(header, "void            __RPC_USER %s_UserFree     (ULONG *, %s *);\n", name, name);
 397   }
 398 }
 399
 400 void write_context_handle_rundowns(void)
 401 {
 402   context_handle_t *ch;
 403   LIST_FOR_EACH_ENTRY(ch, &context_handle_list, context_handle_t, entry)
 404   {
 405     const char *name = ch->name;
 406     fprintf(header, "void __RPC_USER %s_rundown(%s);\n", name, name);
 407   }
 408 }
 409
 410 void write_typedef(type_t *type)
 411 {
 412   fprintf(header, "typedef ");
 413   write_type_def_or_decl(header, type->orig, FALSE, "%s", type->name);
 414   fprintf(header, ";\n");
 415 }
 416
 417 void write_expr(FILE *h, const expr_t *e, int brackets)
 418 {
 419   switch (e->type) {
 420   case EXPR_VOID:
 421     break;
 422   case EXPR_NUM:
 423     fprintf(h, "%lu", e->u.lval);
 424     break;
 425   case EXPR_HEXNUM:
 426     fprintf(h, "0x%lx", e->u.lval);
 427     break;
 428   case EXPR_DOUBLE:
 429     fprintf(h, "%#.15g", e->u.dval);
 430     break;
 431   case EXPR_TRUEFALSE:
 432     if (e->u.lval == 0)
 433       fprintf(h, "FALSE");
 434     else
 435       fprintf(h, "TRUE");
 436     break;
 437   case EXPR_IDENTIFIER:
 438     fprintf(h, "%s", e->u.sval);
 439     break;
 440   case EXPR_NEG:
 441     fprintf(h, "-");
 442     write_expr(h, e->ref, 1);
 443     break;
 444   case EXPR_NOT:
 445     fprintf(h, "~");
 446     write_expr(h, e->ref, 1);
 447     break;
 448   case EXPR_PPTR:
 449     fprintf(h, "*");
 450     write_expr(h, e->ref, 1);
 451     break;
 452   case EXPR_CAST:
 453     fprintf(h, "(");
 454     write_type_decl(h, e->u.tref, NULL);
 455     fprintf(h, ")");
 456     write_expr(h, e->ref, 1);
 457     break;
 458   case EXPR_SIZEOF:
 459     fprintf(h, "sizeof(");
 460     write_type_decl(h, e->u.tref, NULL);
 461     fprintf(h, ")");
 462     break;
 463   case EXPR_SHL:
 464   case EXPR_SHR:
 465   case EXPR_MUL:
 466   case EXPR_DIV:
 467   case EXPR_ADD:
 468   case EXPR_SUB:
 469   case EXPR_AND:
 470   case EXPR_OR:
 471     if (brackets) fprintf(h, "(");
 472     write_expr(h, e->ref, 1);
 473     switch (e->type) {
 474     case EXPR_SHL: fprintf(h, " << "); break;
 475     case EXPR_SHR: fprintf(h, " >> "); break;
 476     case EXPR_MUL: fprintf(h, " * "); break;
 477     case EXPR_DIV: fprintf(h, " / "); break;
 478     case EXPR_ADD: fprintf(h, " + "); break;
 479     case EXPR_SUB: fprintf(h, " - "); break;
 480     case EXPR_AND: fprintf(h, " & "); break;
 481     case EXPR_OR:  fprintf(h, " | "); break;
 482     default: break;
 483     }
 484     write_expr(h, e->u.ext, 1);
 485     if (brackets) fprintf(h, ")");
 486     break;
 487   case EXPR_COND:
 488     if (brackets) fprintf(h, "(");
 489     write_expr(h, e->ref, 1);
 490     fprintf(h, " ? ");
 491     write_expr(h, e->u.ext, 1);
 492     fprintf(h, " : ");
 493     write_expr(h, e->ext2, 1);
 494     if (brackets) fprintf(h, ")");
 495     break;
 496   case EXPR_ADDRESSOF:
 497     fprintf(h, "&");
 498     write_expr(h, e->ref, 1);
 499     break;
 500   }
 501 }
 502
 503 void write_constdef(const var_t *v)
 504 {
 505   fprintf(header, "#define %s (", v->name);
 506   write_expr(header, v->eval, 0);
 507   fprintf(header, ")\n\n");
 508 }
 509
 510 void write_externdef(const var_t *v)
 511 {
 512   fprintf(header, "extern const ");
 513   write_type_def_or_decl(header, v->type, FALSE, "%s", v->name);
 514   fprintf(header, ";\n\n");
 515 }
 516
 517 void write_library(const char *name, const attr_list_t *attr)
 518 {
 519   const UUID *uuid = get_attrp(attr, ATTR_UUID);
 520   fprintf(header, "\n");
 521   write_guid(header, "LIBID", name, uuid);
 522   fprintf(header, "\n");
 523 }
 524
 525
 526 const var_t* get_explicit_handle_var(const func_t* func)
 527 {
 528     const var_t* var;
 529
 530     if (!func->args)
 531         return NULL;
 532
 533     LIST_FOR_EACH_ENTRY( var, func->args, const var_t, entry )
 534         if (var->type->type == RPC_FC_BIND_PRIMITIVE)
 535             return var;
 536
 537     return NULL;
 538 }
 539
 540 int has_out_arg_or_return(const func_t *func)
 541 {
 542     const var_t *var;
 543
 544     if (!is_void(func->def->type))
 545         return 1;
 546
 547     if (!func->args)
 548         return 0;
 549
 550     LIST_FOR_EACH_ENTRY( var, func->args, const var_t, entry )
 551         if (is_attr(var->attrs, ATTR_OUT))
 552             return 1;
 553
 554     return 0;
 555 }
 556
 557
 558 /********** INTERFACES **********/
 559
 560 int is_object(const attr_list_t *list)
 561 {
 562     const attr_t *attr;
 563     if (list) LIST_FOR_EACH_ENTRY( attr, list, const attr_t, entry )
 564         if (attr->type == ATTR_OBJECT || attr->type == ATTR_ODL) return 1;
 565     return 0;
 566 }
 567
 568 int is_local(const attr_list_t *a)
 569 {
 570   return is_attr(a, ATTR_LOCAL);
 571 }
 572
 573 const var_t *is_callas(const attr_list_t *a)
 574 {
 575   return get_attrp(a, ATTR_CALLAS);
 576 }
 577
 578 static void write_method_macro(const type_t *iface, const char *name)
 579 {
 580   const func_t *cur;
 581
 582   if (iface->ref) write_method_macro(iface->ref, name);
 583
 584   if (!iface->funcs) return;
 585
 586   fprintf(header, "/*** %s methods ***/\n", iface->name);
 587   LIST_FOR_EACH_ENTRY( cur, iface->funcs, const func_t, entry )
 588   {
 589     var_t *def = cur->def;
 590     if (!is_callas(def->attrs)) {
 591       const var_t *arg;
 592
 593       fprintf(header, "#define %s_", name);
 594       write_name(header,def);
 595       fprintf(header, "(This");
 596       if (cur->args)
 597           LIST_FOR_EACH_ENTRY( arg, cur->args, const var_t, entry )
 598               fprintf(header, ",%s", arg->name);
 599       fprintf(header, ") ");
 600
 601       fprintf(header, "(This)->lpVtbl->");
 602       write_name(header, def);
 603       fprintf(header, "(This");
 604       if (cur->args)
 605           LIST_FOR_EACH_ENTRY( arg, cur->args, const var_t, entry )
 606               fprintf(header, ",%s", arg->name);
 607       fprintf(header, ")\n");
 608     }
 609   }
 610 }
 611
 612 void write_args(FILE *h, const var_list_t *args, const char *name, int method, int do_indent)
 613 {
 614   const var_t *arg;
 615   int count = 0;
 616
 617   if (do_indent)
 618   {
 619       indentation++;
 620       indent(h, 0);
 621   }
 622   if (method == 1) {
 623     fprintf(h, "%s* This", name);
 624     count++;
 625   }
 626   if (args) LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry ) {
 627     if (count) {
 628         if (do_indent)
 629         {
 630             fprintf(h, ",\n");
 631             indent(h, 0);
 632         }
 633         else fprintf(h, ",");
 634     }
 635     if (arg->args)
 636     {
 637       write_type_decl_left(h, arg->type);
 638       fprintf(h, " (STDMETHODCALLTYPE *");
 639       write_name(h,arg);
 640       fprintf(h, ")(");
 641       write_args(h, arg->args, NULL, 0, FALSE);
 642       fprintf(h, ")");
 643     }
 644     else
 645       write_type_decl(h, arg->type, "%s", arg->name);
 646     count++;
 647   }
 648   if (do_indent) indentation--;
 649 }
 650
 651 static void write_cpp_method_def(const type_t *iface)
 652 {
 653   const func_t *cur;
 654
 655   if (!iface->funcs) return;
 656
 657   LIST_FOR_EACH_ENTRY( cur, iface->funcs, const func_t, entry )
 658   {
 659     var_t *def = cur->def;
 660     if (!is_callas(def->attrs)) {
 661       indent(header, 0);
 662       fprintf(header, "virtual ");
 663       write_type_decl_left(header, def->type);
 664       fprintf(header, " STDMETHODCALLTYPE ");
 665       write_name(header, def);
 666       fprintf(header, "(\n");
 667       write_args(header, cur->args, iface->name, 2, TRUE);
 668       fprintf(header, ") = 0;\n");
 669       fprintf(header, "\n");
 670     }
 671   }
 672 }
 673
 674 static void do_write_c_method_def(const type_t *iface, const char *name)
 675 {
 676   const func_t *cur;
 677
 678   if (iface->ref) do_write_c_method_def(iface->ref, name);
 679
 680   if (!iface->funcs) return;
 681   indent(header, 0);
 682   fprintf(header, "/*** %s methods ***/\n", iface->name);
 683   LIST_FOR_EACH_ENTRY( cur, iface->funcs, const func_t, entry )
 684   {
 685     const var_t *def = cur->def;
 686     if (!is_callas(def->attrs)) {
 687       indent(header, 0);
 688       write_type_decl_left(header, def->type);
 689       fprintf(header, " (STDMETHODCALLTYPE *");
 690       write_name(header, def);
 691       fprintf(header, ")(\n");
 692       write_args(header, cur->args, name, 1, TRUE);
 693       fprintf(header, ");\n");
 694       fprintf(header, "\n");
 695     }
 696   }
 697 }
 698
 699 static void write_c_method_def(const type_t *iface)
 700 {
 701   do_write_c_method_def(iface, iface->name);
 702 }
 703
 704 static void write_c_disp_method_def(const type_t *iface)
 705 {
 706   do_write_c_method_def(iface->ref, iface->name);
 707 }
 708
 709 static void write_method_proto(const type_t *iface)
 710 {
 711   const func_t *cur;
 712
 713   if (!iface->funcs) return;
 714   LIST_FOR_EACH_ENTRY( cur, iface->funcs, const func_t, entry )
 715   {
 716     const var_t *def = cur->def;
 717
 718     if (!is_local(def->attrs)) {
 719       /* proxy prototype */
 720       write_type_decl_left(header, def->type);
 721       fprintf(header, " CALLBACK %s_", iface->name);
 722       write_name(header, def);
 723       fprintf(header, "_Proxy(\n");
 724       write_args(header, cur->args, iface->name, 1, TRUE);
 725       fprintf(header, ");\n");
 726       /* stub prototype */
 727       fprintf(header, "void __RPC_STUB %s_", iface->name);
 728       write_name(header,def);
 729       fprintf(header, "_Stub(\n");
 730       fprintf(header, "    IRpcStubBuffer* This,\n");
 731       fprintf(header, "    IRpcChannelBuffer* pRpcChannelBuffer,\n");
 732       fprintf(header, "    PRPC_MESSAGE pRpcMessage,\n");
 733       fprintf(header, "    DWORD* pdwStubPhase);\n");
 734     }
 735   }
 736 }
 737
 738 void write_locals(FILE *fp, const type_t *iface, int body)
 739 {
 740   static const char comment[]
 741     = "/* WIDL-generated stub.  You must provide an implementation for this.  */";
 742   const func_list_t *funcs = iface->funcs;
 743   const func_t *cur;
 744
 745   if (!is_object(iface->attrs) || !funcs)
 746     return;
 747
 748   LIST_FOR_EACH_ENTRY(cur, funcs, const func_t, entry) {
 749     const var_t *def = cur->def;
 750     const var_t *cas = is_callas(def->attrs);
 751
 752     if (cas) {
 753       const func_t *m;
 754       LIST_FOR_EACH_ENTRY(m, iface->funcs, const func_t, entry)
 755         if (!strcmp(m->def->name, cas->name))
 756           break;
 757       if (&m->entry != iface->funcs) {
 758         const var_t *mdef = m->def;
 759         /* proxy prototype - use local prototype */
 760         write_type_decl_left(fp, mdef->type);
 761         fprintf(fp, " CALLBACK %s_", iface->name);
 762         write_name(fp, mdef);
 763         fprintf(fp, "_Proxy(\n");
 764         write_args(fp, m->args, iface->name, 1, TRUE);
 765         fprintf(fp, ")");
 766         if (body) {
 767           type_t *rt = mdef->type;
 768           fprintf(fp, "\n{\n");
 769           fprintf(fp, "    %s\n", comment);
 770           if (rt->name && strcmp(rt->name, "HRESULT") == 0)
 771             fprintf(fp, "    return E_NOTIMPL;\n");
 772           else if (rt->type) {
 773             fprintf(fp, "    ");
 774             write_type_decl(fp, rt, "rv");
 775             fprintf(fp, ";\n");
 776             fprintf(fp, "    memset(&rv, 0, sizeof rv);\n");
 777             fprintf(fp, "    return rv;\n");
 778           }
 779           fprintf(fp, "}\n\n");
 780         }
 781         else
 782           fprintf(fp, ";\n");
 783         /* stub prototype - use remotable prototype */
 784         write_type_decl_left(fp, def->type);
 785         fprintf(fp, " __RPC_STUB %s_", iface->name);
 786         write_name(fp, mdef);
 787         fprintf(fp, "_Stub(\n");
 788         write_args(fp, cur->args, iface->name, 1, TRUE);
 789         fprintf(fp, ")");
 790         if (body)
 791           /* Remotable methods must all return HRESULTs.  */
 792           fprintf(fp, "\n{\n    %s\n    return E_NOTIMPL;\n}\n\n", comment);
 793         else
 794           fprintf(fp, ";\n");
 795       }
 796       else
 797         error_loc("invalid call_as attribute (%s -> %s)\n", def->name, cas->name);
 798     }
 799   }
 800 }
 801
 802 static void write_function_proto(const type_t *iface, const func_t *fun, const char *prefix)
 803 {
 804   var_t *def = fun->def;
 805
 806   /* FIXME: do we need to handle call_as? */
 807   write_type_decl_left(header, def->type);
 808   fprintf(header, " ");
 809   write_prefix_name(header, prefix, def);
 810   fprintf(header, "(\n");
 811   if (fun->args)
 812     write_args(header, fun->args, iface->name, 0, TRUE);
 813   else
 814     fprintf(header, "    void");
 815   fprintf(header, ");\n");
 816 }
 817
 818 static void write_function_protos(const type_t *iface)
 819 {
 820   const char *implicit_handle = get_attrp(iface->attrs, ATTR_IMPLICIT_HANDLE);
 821   int explicit_handle = is_attr(iface->attrs, ATTR_EXPLICIT_HANDLE);
 822   const var_t* explicit_handle_var;
 823   const func_t *cur;
 824   int prefixes_differ = strcmp(prefix_client, prefix_server);
 825
 826   if (!iface->funcs) return;
 827   LIST_FOR_EACH_ENTRY( cur, iface->funcs, const func_t, entry )
 828   {
 829     var_t *def = cur->def;
 830
 831     /* check for a defined binding handle */
 832     explicit_handle_var = get_explicit_handle_var(cur);
 833     if (explicit_handle) {
 834       if (!explicit_handle_var) {
 835         error("%s() does not define an explicit binding handle!\n", def->name);
 836         return;
 837       }
 838     } else if (implicit_handle) {
 839       if (explicit_handle_var) {
 840         error("%s() must not define a binding handle!\n", def->name);
 841         return;
 842       }
 843     }
 844
 845     if (prefixes_differ) {
 846       fprintf(header, "/* client prototype */\n");
 847       write_function_proto(iface, cur, prefix_client);
 848       fprintf(header, "/* server prototype */\n");
 849     }
 850     write_function_proto(iface, cur, prefix_server);
 851   }
 852 }
 853
 854 void write_forward(type_t *iface)
 855 {
 856   /* C/C++ forwards should only be written for object interfaces, so if we
 857    * have a full definition we only write one if we find [object] among the
 858    * attributes - however, if we don't have a full definition at this point
 859    * (i.e. this is an IDL forward), then we also assume that it is an object
 860    * interface, since non-object interfaces shouldn't need forwards */
 861   if ((!iface->defined || is_object(iface->attrs) || is_attr(iface->attrs, ATTR_DISPINTERFACE))
 862         && !iface->written) {
 863     fprintf(header, "#ifndef __%s_FWD_DEFINED__\n", iface->name);
 864     fprintf(header, "#define __%s_FWD_DEFINED__\n", iface->name);
 865     fprintf(header, "typedef interface %s %s;\n", iface->name, iface->name);
 866     fprintf(header, "#endif\n\n" );
 867     iface->written = TRUE;
 868   }
 869 }
 870
 871 static void write_iface_guid(const type_t *iface)
 872 {
 873   const UUID *uuid = get_attrp(iface->attrs, ATTR_UUID);
 874   write_guid(header, "IID", iface->name, uuid);
 875 }
 876
 877 static void write_dispiface_guid(const type_t *iface)
 878 {
 879   const UUID *uuid = get_attrp(iface->attrs, ATTR_UUID);
 880   write_guid(header, "DIID", iface->name, uuid);
 881 }
 882
 883 static void write_coclass_guid(type_t *cocl)
 884 {
 885   const UUID *uuid = get_attrp(cocl->attrs, ATTR_UUID);
 886   write_guid(header, "CLSID", cocl->name, uuid);
 887 }
 888
 889 static void write_com_interface(type_t *iface)
 890 {
 891   if (!iface->funcs && !iface->ref) {
 892     parser_warning("%s has no methods\n", iface->name);
 893     return;
 894   }
 895
 896   fprintf(header, "/*****************************************************************************\n");
 897   fprintf(header, " * %s interface\n", iface->name);
 898   fprintf(header, " */\n");
 899   fprintf(header,"#ifndef __%s_INTERFACE_DEFINED__\n", iface->name);
 900   fprintf(header,"#define __%s_INTERFACE_DEFINED__\n\n", iface->name);
 901   write_iface_guid(iface);
 902   write_forward(iface);
 903   /* C++ interface */
 904   fprintf(header, "#if defined(__cplusplus) && !defined(CINTERFACE)\n");
 905   if (iface->ref)
 906   {
 907       fprintf(header, "interface %s : public %s\n", iface->name, iface->ref->name);
 908       fprintf(header, "{\n");
 909       indentation++;
 910       write_cpp_method_def(iface);
 911       indentation--;
 912       fprintf(header, "};\n");
 913   }
 914   else
 915   {
 916       fprintf(header, "interface %s\n", iface->name);
 917       fprintf(header, "{\n");
 918       fprintf(header, "    BEGIN_INTERFACE\n");
 919       fprintf(header, "\n");
 920       indentation++;
 921       write_cpp_method_def(iface);
 922       indentation--;
 923       fprintf(header, "    END_INTERFACE\n");
 924       fprintf(header, "};\n");
 925   }
 926   fprintf(header, "#else\n");
 927   /* C interface */
 928   fprintf(header, "typedef struct %sVtbl {\n", iface->name);
 929   indentation++;
 930   fprintf(header, "    BEGIN_INTERFACE\n");
 931   fprintf(header, "\n");
 932   write_c_method_def(iface);
 933   indentation--;
 934   fprintf(header, "    END_INTERFACE\n");
 935   fprintf(header, "} %sVtbl;\n", iface->name);
 936   fprintf(header, "interface %s {\n", iface->name);
 937   fprintf(header, "    CONST_VTBL %sVtbl* lpVtbl;\n", iface->name);
 938   fprintf(header, "};\n");
 939   fprintf(header, "\n");
 940   fprintf(header, "#ifdef COBJMACROS\n");
 941   write_method_macro(iface, iface->name);
 942   fprintf(header, "#endif\n");
 943   fprintf(header, "\n");
 944   fprintf(header, "#endif\n");
 945   fprintf(header, "\n");
 946   write_method_proto(iface);
 947   write_locals(header, iface, FALSE);
 948   fprintf(header,"\n#endif  /* __%s_INTERFACE_DEFINED__ */\n\n", iface->name);
 949 }
 950
 951 static void write_rpc_interface(const type_t *iface)
 952 {
 953   unsigned int ver = get_attrv(iface->attrs, ATTR_VERSION);
 954   const char *var = get_attrp(iface->attrs, ATTR_IMPLICIT_HANDLE);
 955   static int allocate_written = 0;
 956
 957   if (!allocate_written)
 958   {
 959     allocate_written = 1;
 960     fprintf(header, "void * __RPC_USER MIDL_user_allocate(size_t);\n");
 961     fprintf(header, "void __RPC_USER MIDL_user_free(void *);\n\n");
 962   }
 963
 964   fprintf(header, "/*****************************************************************************\n");
 965   fprintf(header, " * %s interface (v%d.%d)\n", iface->name, MAJORVERSION(ver), MINORVERSION(ver));
 966   fprintf(header, " */\n");
 967   fprintf(header,"#ifndef __%s_INTERFACE_DEFINED__\n", iface->name);
 968   fprintf(header,"#define __%s_INTERFACE_DEFINED__\n\n", iface->name);
 969   if (iface->funcs)
 970   {
 971     write_iface_guid(iface);
 972     if (var) fprintf(header, "extern handle_t %s;\n", var);
 973     if (old_names)
 974     {
 975         fprintf(header, "extern RPC_IF_HANDLE %s%s_ClientIfHandle;\n", prefix_client, iface->name);
 976         fprintf(header, "extern RPC_IF_HANDLE %s%s_ServerIfHandle;\n", prefix_server, iface->name);
 977     }
 978     else
 979     {
 980         fprintf(header, "extern RPC_IF_HANDLE %s%s_v%d_%d_c_ifspec;\n",
 981                 prefix_client, iface->name, MAJORVERSION(ver), MINORVERSION(ver));
 982         fprintf(header, "extern RPC_IF_HANDLE %s%s_v%d_%d_s_ifspec;\n",
 983                 prefix_server, iface->name, MAJORVERSION(ver), MINORVERSION(ver));
 984     }
 985     write_function_protos(iface);
 986   }
 987   fprintf(header,"\n#endif  /* __%s_INTERFACE_DEFINED__ */\n\n", iface->name);
 988
 989   /* FIXME: server/client code */
 990 }
 991
 992 void write_interface(type_t *iface)
 993 {
 994   if (is_object(iface->attrs))
 995     write_com_interface(iface);
 996   else
 997     write_rpc_interface(iface);
 998 }
 999
1000 void write_dispinterface(type_t *iface)
1001 {
1002   fprintf(header, "/*****************************************************************************\n");
1003   fprintf(header, " * %s dispinterface\n", iface->name);
1004   fprintf(header, " */\n");
1005   fprintf(header,"#ifndef __%s_DISPINTERFACE_DEFINED__\n", iface->name);
1006   fprintf(header,"#define __%s_DISPINTERFACE_DEFINED__\n\n", iface->name);
1007   write_dispiface_guid(iface);
1008   write_forward(iface);
1009   /* C++ interface */
1010   fprintf(header, "#if defined(__cplusplus) && !defined(CINTERFACE)\n");
1011   fprintf(header, "interface %s : public %s\n", iface->name, iface->ref->name);
1012   fprintf(header, "{\n");
1013   fprintf(header, "};\n");
1014   fprintf(header, "#else\n");
1015   /* C interface */
1016   fprintf(header, "typedef struct %sVtbl {\n", iface->name);
1017   indentation++;
1018   fprintf(header, "    BEGIN_INTERFACE\n");
1019   fprintf(header, "\n");
1020   write_c_disp_method_def(iface);
1021   indentation--;
1022   fprintf(header, "    END_INTERFACE\n");
1023   fprintf(header, "} %sVtbl;\n", iface->name);
1024   fprintf(header, "interface %s {\n", iface->name);
1025   fprintf(header, "    CONST_VTBL %sVtbl* lpVtbl;\n", iface->name);
1026   fprintf(header, "};\n");
1027   fprintf(header, "\n");
1028   fprintf(header, "#ifdef COBJMACROS\n");
1029   write_method_macro(iface->ref, iface->name);
1030   fprintf(header, "#endif\n");
1031   fprintf(header, "\n");
1032   fprintf(header, "#endif\n");
1033   fprintf(header, "\n");
1034   fprintf(header,"#endif  /* __%s_DISPINTERFACE_DEFINED__ */\n\n", iface->name);
1035 }
1036
1037 void write_coclass(type_t *cocl)
1038 {
1039   fprintf(header, "/*****************************************************************************\n");
1040   fprintf(header, " * %s coclass\n", cocl->name);
1041   fprintf(header, " */\n\n");
1042   write_coclass_guid(cocl);
1043   fprintf(header, "\n");
1044 }
1045
1046 void write_coclass_forward(type_t *cocl)
1047 {
1048   fprintf(header, "#ifndef __%s_FWD_DEFINED__\n", cocl->name);
1049   fprintf(header, "#define __%s_FWD_DEFINED__\n", cocl->name);
1050   fprintf(header, "typedef struct %s %s;\n", cocl->name, cocl->name);
1051   fprintf(header, "#endif /* defined __%s_FWD_DEFINED__ */\n\n", cocl->name );
1052 }