tools/rpcgen/rpc_hout.c

   1 /*
   2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   3  * unrestricted use provided that this legend is included on all tape
   4  * media and as a part of the software program in whole or part.  Users
   5  * may copy or modify Sun RPC without charge, but are not authorized
   6  * to license or distribute it to anyone else except as part of a product or
   7  * program developed by the user or with the express written consent of
   8  * Sun Microsystems, Inc.
   9  *
  10  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  11  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  12  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  13  *
  14  * Sun RPC is provided with no support and without any obligation on the
  15  * part of Sun Microsystems, Inc. to assist in its use, correction,
  16  * modification or enhancement.
  17  *
  18  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  19  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  20  * OR ANY PART THEREOF.
  21  *
  22  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  23  * or profits or other special, indirect and consequential damages, even if
  24  * Sun has been advised of the possibility of such damages.
  25  *
  26  * Sun Microsystems, Inc.
  27  * 2550 Garcia Avenue
  28  * Mountain View, California  94043
  29  */
  30
  31 #ifndef lint
  32 static char sccsid[] = "@(#)rpc_hout.c 1.12 89/02/22 (C) 1987 SMI";
  33 #endif
  34
  35 /*
  36  * rpc_hout.c, Header file outputter for the RPC protocol compiler
  37  */
  38 #include <stdio.h>
  39 #include <ctype.h>
  40 #include "rpc_parse.h"
  41 #include "rpc_util.h"
  42 #include "rpc_output.h"
  43
  44
  45 static int      undefined2(char *type, char *stop);
  46 static void     pxdrfuncdecl(char *name, int pointerp);
  47 static void     pconstdef(definition *def);
  48 static void     pargdef(definition *def);
  49 static void     pstructdef(definition *def);
  50 static void     puniondef(definition *def);
  51 static void     pdefine(char *name, char *num);
  52 static void     puldefine(char *name, char *num);
  53 static int      define_printed(proc_list *stop, version_list *start);
  54 static void     pprogramdef(definition *def);
  55 static void     pprocdef(proc_list *proc, version_list *vp,
  56                                 char *addargtype, int server_p, int mode);
  57 static void     parglist(proc_list *proc, char *addargtype);
  58 static void     penumdef(definition *def);
  59 static void     ptypedef(definition *def);
  60
  61 /*
  62  * Print the C-version of an xdr definition
  63  */
  64 void
  65 print_datadef(definition *def)
  66 {
  67
  68         if (def->def_kind == DEF_PROGRAM )  /* handle data only */
  69                 return;
  70
  71         if (def->def_kind != DEF_CONST) {
  72                 f_print(fout, "\n");
  73         }
  74         switch (def->def_kind) {
  75         case DEF_STRUCT:
  76                 pstructdef(def);
  77                 break;
  78         case DEF_UNION:
  79                 puniondef(def);
  80                 break;
  81         case DEF_ENUM:
  82                 penumdef(def);
  83                 break;
  84         case DEF_TYPEDEF:
  85                 ptypedef(def);
  86                 break;
  87         case DEF_PROGRAM:
  88                 pprogramdef(def);
  89                 break;
  90         case DEF_CONST:
  91                 pconstdef(def);
  92                 break;
  93         }
  94         if (def->def_kind != DEF_PROGRAM && def->def_kind != DEF_CONST) {
  95           pxdrfuncdecl( def->def_name,
  96                        def->def_kind != DEF_TYPEDEF ||
  97                        !isvectordef(def->def.ty.old_type, def->def.ty.rel));
  98
  99         }
 100 }
 101
 102
 103 void
 104 print_funcdef(definition *def)
 105 {
 106         switch (def->def_kind) {
 107         case DEF_PROGRAM:
 108                 f_print(fout, "\n");
 109                 pprogramdef(def);
 110                 break;
 111         default:
 112                 break;
 113         }
 114 }
 115
 116 static void
 117 pxdrfuncdecl(char *name, int pointerp)
 118 {
 119         f_print(fout,
 120         "#ifdef __cplusplus \n"
 121         "extern \"C\" bool_t xdr_%s(XDR *, %s%s);\n"
 122         "#elif __STDC__ \n"
 123         "extern  bool_t xdr_%s(XDR *, %s%s);\n"
 124         "#else /* Old Style C */ \n"
 125         "bool_t xdr_%s();\n"
 126         "#endif /* Old Style C */ \n\n",
 127         name, name, pointerp ? "*" : "",
 128         name, name, pointerp ? "*" : "",
 129         name);
 130 }
 131
 132
 133 static void
 134 pconstdef(definition *def)
 135 {
 136         pdefine(def->def_name, def->def.co);
 137 }
 138
 139 /* print out the definitions for the arguments of functions in the
 140    header file
 141 */
 142 static  void
 143 pargdef(definition *def)
 144 {
 145         decl_list *l;
 146         version_list *vers;
 147         char *name;
 148         proc_list *plist;
 149
 150
 151         for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
 152                         for(plist = vers->procs; plist != NULL;
 153                             plist = plist->next) {
 154
 155                                 if (!newstyle || plist->arg_num < 2) {
 156                                         continue; /* old style or single args */
 157                                 }
 158                                 name = plist->args.argname;
 159                                 f_print(fout, "struct %s {\n", name);
 160                                 for (l = plist->args.decls;
 161                                      l != NULL; l = l->next) {
 162                                         pdeclaration(name, &l->decl, 1, ";\n" );
 163                                 }
 164                                 f_print(fout, "};\n");
 165                                 f_print(fout, "typedef struct %s %s;\n", name, name);
 166                                 pxdrfuncdecl(name, 0);
 167                                 f_print( fout, "\n" );
 168                         }
 169                 }
 170
 171 }
 172
 173
 174 static void
 175 pstructdef(definition *def)
 176 {
 177         decl_list *l;
 178         char *name = def->def_name;
 179
 180         f_print(fout, "struct %s {\n", name);
 181         for (l = def->def.st.decls; l != NULL; l = l->next) {
 182                 pdeclaration(name, &l->decl, 1, ";\n");
 183         }
 184         f_print(fout, "};\n");
 185         f_print(fout, "typedef struct %s %s;\n", name, name);
 186 }
 187
 188 static void
 189 puniondef(definition *def)
 190 {
 191         case_list      *l;
 192         char           *name = def->def_name;
 193         declaration    *decl;
 194
 195         f_print(fout, "struct %s {\n", name);
 196         decl = &def->def.un.enum_decl;
 197         if (streq(decl->type, "bool")) {
 198                 f_print(fout, "\tbool_t %s;\n", decl->name);
 199         } else {
 200                 f_print(fout, "\t%s %s;\n", decl->type, decl->name);
 201         }
 202         f_print(fout, "\tunion {\n");
 203         for (l = def->def.un.cases; l != NULL; l = l->next) {
 204                 if (l->contflag == 0)
 205                         pdeclaration(name, &l->case_decl, 2, ";\n");
 206         }
 207         decl = def->def.un.default_decl;
 208         if (decl && !streq(decl->type, "void")) {
 209                 pdeclaration(name, decl, 2, ";\n");
 210         }
 211         f_print(fout, "\t} %s_u;\n", name);
 212         f_print(fout, "};\n");
 213         f_print(fout, "typedef struct %s %s;\n", name, name);
 214 }
 215
 216 static void
 217 pdefine(char *name, char *num)
 218 {
 219         f_print(fout, "#define %s %s\n", name, num);
 220 }
 221
 222 static void
 223 puldefine(char *name, char *num)
 224 {
 225         f_print(fout, "#define %s ((u_long)%s)\n", name, num);
 226 }
 227
 228 static int
 229 define_printed(proc_list *stop, version_list *start)
 230 {
 231         version_list *vers;
 232         proc_list *proc;
 233
 234         for (vers = start; vers != NULL; vers = vers->next) {
 235                 for (proc = vers->procs; proc != NULL; proc = proc->next) {
 236                         if (proc == stop) {
 237                                 return (0);
 238                         } else if (streq(proc->proc_name, stop->proc_name)) {
 239                                 return (1);
 240                         }
 241                 }
 242         }
 243         abort();
 244         /* NOTREACHED */
 245 }
 246
 247 static void
 248 pprogramdef(definition *def)
 249 {
 250         version_list   *vers;
 251         proc_list      *proc;
 252         int             i;
 253         char           *ext;
 254
 255         pargdef(def);
 256
 257         puldefine(def->def_name, def->def.pr.prog_num);
 258         for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
 259                 if (tblflag) {
 260                         f_print(fout, "extern struct rpcgen_table %s_%s_table[];\n",
 261                                 locase(def->def_name), vers->vers_num);
 262                         f_print(fout, "extern %s_%s_nproc;\n",
 263                                 locase(def->def_name), vers->vers_num);
 264                 }
 265                 puldefine(vers->vers_name, vers->vers_num);
 266
 267                 /*
 268                  * Print out 3 definitions, one for ANSI-C, another for C++,
 269                  * a third for old style C
 270                  */
 271
 272                 for (i = 0; i < 3; i++) {
 273                         if (i == 0) {
 274                                 f_print(fout, "\n#ifdef __cplusplus\n");
 275                                 ext = "extern \"C\" ";
 276                         } else if (i == 1) {
 277                                 f_print(fout, "\n#elif __STDC__\n");
 278                                 ext = "extern  ";
 279                         } else {
 280                                 f_print(fout, "\n#else /* Old Style C */ \n");
 281                                 ext = "extern  ";
 282                         }
 283
 284
 285                         for (proc = vers->procs; proc != NULL; proc = proc->next) {
 286                                 if (!define_printed(proc, def->def.pr.versions)) {
 287                                         puldefine(proc->proc_name, proc->proc_num);
 288                                 }
 289                                 f_print(fout, "%s", ext);
 290                                 pprocdef(proc, vers, "CLIENT *", 0, i);
 291                                 f_print(fout, "%s", ext);
 292                                 pprocdef(proc, vers, "struct svc_req *", 1, i);
 293
 294                         }
 295
 296                 }
 297                 f_print(fout, "#endif /* Old Style C */ \n");
 298         }
 299 }
 300
 301 static void
 302 pprocdef(proc_list *proc, version_list *vp, char *addargtype,
 303                                 int server_p, int mode)
 304 {
 305         ptype(proc->res_prefix, proc->res_type, 1);
 306         f_print(fout, "* ");
 307         if (server_p)
 308                 pvname_svc(proc->proc_name, vp->vers_num);
 309         else
 310                 pvname(proc->proc_name, vp->vers_num);
 311
 312         /*
 313          * mode  0 == cplusplus, mode  1 = ANSI-C, mode 2 = old style C
 314          */
 315         if (mode == 0 || mode == 1)
 316                 parglist(proc, addargtype);
 317         else
 318                 f_print(fout, "();\n");
 319 }
 320
 321
 322
 323 /* print out argument list of procedure */
 324 static void
 325 parglist(proc_list *proc, char *addargtype)
 326 {
 327         decl_list      *dl;
 328
 329         f_print(fout, "(");
 330
 331         if (proc->arg_num < 2 && newstyle &&
 332                 streq(proc->args.decls->decl.type, "void")) {
 333                 /* 0 argument in new style:  do nothing */
 334         } else {
 335                 for (dl = proc->args.decls; dl != NULL; dl = dl->next) {
 336                         ptype(dl->decl.prefix, dl->decl.type, 1);
 337                         if (!newstyle)
 338                                 f_print(fout, "*");     /* old style passes by reference */
 339
 340                         f_print(fout, ", ");
 341                 }
 342         }
 343
 344         f_print(fout, "%s);\n", addargtype);
 345 }
 346
 347 static void
 348 penumdef(definition *def)
 349 {
 350         char *name = def->def_name;
 351         enumval_list *l;
 352         char *last = NULL;
 353         int count = 0;
 354
 355         f_print(fout, "enum %s {\n", name);
 356         for (l = def->def.en.vals; l != NULL; l = l->next) {
 357                 f_print(fout, "\t%s", l->name);
 358                 if (l->assignment) {
 359                         f_print(fout, " = %s", l->assignment);
 360                         last = l->assignment;
 361                         count = 1;
 362                 } else {
 363                         if (last == NULL) {
 364                                 f_print(fout, " = %d", count++);
 365                         } else {
 366                                 f_print(fout, " = %s + %d", last, count++);
 367                         }
 368                 }
 369                 f_print(fout, ",\n");
 370         }
 371         f_print(fout, "};\n");
 372         f_print(fout, "typedef enum %s %s;\n", name, name);
 373 }
 374
 375 static void
 376 ptypedef(definition *def)
 377 {
 378         char *name = def->def_name;
 379         char *old = def->def.ty.old_type;
 380         char prefix[8]; /* enough to contain "struct ", including NUL */
 381         relation rel = def->def.ty.rel;
 382
 383
 384         if (!streq(name, old)) {
 385                 if (streq(old, "string")) {
 386                         old = "char";
 387                         rel = REL_POINTER;
 388                 } else if (streq(old, "opaque")) {
 389                         old = "char";
 390                 } else if (streq(old, "bool")) {
 391                         old = "bool_t";
 392                 }
 393                 if (undefined2(old, name) && def->def.ty.old_prefix) {
 394                         s_print(prefix, "%s ", def->def.ty.old_prefix);
 395                 } else {
 396                         prefix[0] = 0;
 397                 }
 398                 f_print(fout, "typedef ");
 399                 switch (rel) {
 400                 case REL_ARRAY:
 401                         f_print(fout, "struct {\n");
 402                         f_print(fout, "\tu_int %s_len;\n", name);
 403                         f_print(fout, "\t%s%s *%s_val;\n", prefix, old, name);
 404                         f_print(fout, "} %s", name);
 405                         break;
 406                 case REL_POINTER:
 407                         f_print(fout, "%s%s *%s", prefix, old, name);
 408                         break;
 409                 case REL_VECTOR:
 410                         f_print(fout, "%s%s %s[%s]", prefix, old, name,
 411                                 def->def.ty.array_max);
 412                         break;
 413                 case REL_ALIAS:
 414                         f_print(fout, "%s%s %s", prefix, old, name);
 415                         break;
 416                 }
 417                 f_print(fout, ";\n");
 418         }
 419 }
 420
 421 void
 422 pdeclaration(char *name, declaration *dec, int tab, char *separator)
 423 {
 424         char buf[8];    /* enough to hold "struct ", include NUL */
 425         char *prefix;
 426         char *type;
 427
 428         if (streq(dec->type, "void")) {
 429                 return;
 430         }
 431         tabify(fout, tab);
 432         if (streq(dec->type, name) && !dec->prefix) {
 433                 f_print(fout, "struct ");
 434         }
 435         if (streq(dec->type, "string")) {
 436                 f_print(fout, "char *%s", dec->name);
 437         } else {
 438                 prefix = "";
 439                 if (streq(dec->type, "bool")) {
 440                         type = "bool_t";
 441                 } else if (streq(dec->type, "opaque")) {
 442                         type = "char";
 443                 } else {
 444                         if (dec->prefix) {
 445                                 s_print(buf, "%s ", dec->prefix);
 446                                 prefix = buf;
 447                         }
 448                         type = dec->type;
 449                 }
 450                 switch (dec->rel) {
 451                 case REL_ALIAS:
 452                         f_print(fout, "%s%s %s", prefix, type, dec->name);
 453                         break;
 454                 case REL_VECTOR:
 455                         f_print(fout, "%s%s %s[%s]", prefix, type, dec->name,
 456                                 dec->array_max);
 457                         break;
 458                 case REL_POINTER:
 459                         f_print(fout, "%s%s *%s", prefix, type, dec->name);
 460                         break;
 461                 case REL_ARRAY:
 462                         f_print(fout, "struct {\n");
 463                         tabify(fout, tab);
 464                         f_print(fout, "\tu_int %s_len;\n", dec->name);
 465                         tabify(fout, tab);
 466                         f_print(fout, "\t%s%s *%s_val;\n", prefix, type, dec->name);
 467                         tabify(fout, tab);
 468                         f_print(fout, "} %s", dec->name);
 469                         break;
 470                 }
 471         }
 472         f_print(fout, separator );
 473 }
 474
 475 static int
 476 undefined2(char *type, char *stop)
 477 {
 478         list *l;
 479         definition *def;
 480
 481         for (l = defined; l != NULL; l = l->next) {
 482                 def = (definition *) l->val;
 483                 if (def->def_kind != DEF_PROGRAM) {
 484                         if (streq(def->def_name, stop)) {
 485                                 return (1);
 486                         } else if (streq(def->def_name, type)) {
 487                                 return (0);
 488                         }
 489                 }
 490         }
 491         return (1);
 492 }