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