src/rxgen/rpc_cout.c

   1 /* @(#)rpc_cout.c       1.1 87/11/04 3.9 RPCSRC */
   2 /*
   3  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   4  * unrestricted use provided that this legend is included on all tape
   5  * media and as a part of the software program in whole or part.  Users
   6  * may copy or modify Sun RPC without charge, but are not authorized
   7  * to license or distribute it to anyone else except as part of a product or
   8  * program developed by the user.
   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 /*
  32  * rpc_cout.c, XDR routine outputter for the RPC protocol compiler
  33  * Copyright (C) 1987, Sun Microsystems, Inc.
  34  */
  35 #include <afsconfig.h>
  36 #include <afs/param.h>
  37
  38 #include <roken.h>
  39
  40 #include "rpc_scan.h"
  41 #include "rpc_parse.h"
  42 #include "rpc_util.h"
  43
  44 /* Static prototypes */
  45 static int findtype(definition * def, char *type);
  46 static int undefined(char *type);
  47 static void print_header(definition * def);
  48 static void print_trailer(void);
  49 static void print_ifopen(int indent, char *name);
  50 static void print_ifarg(char *arg);
  51 static void print_ifarg_with_cast(int ptr_to, char *type, char *arg);
  52 static void print_ifsizeof(char *prefix, char *type);
  53 static void print_ifclose(int indent);
  54 static void space(void);
  55 static void print_ifstat(int indent, char *prefix, char *type, relation rel,
  56                          char *amax, char *objname, char *name);
  57 static void emit_enum(definition * def);
  58 static void emit_union(definition * def);
  59 static void emit_struct(definition * def);
  60 static void emit_typedef(definition * def);
  61 static void print_stat(declaration * dec);
  62 static void print_hout(declaration * dec);
  63 static void print_cout(declaration * dec);
  64 static void print_rxifopen(char *typename);
  65 static void print_rxifarg(char *amp, char *arg, int costant);
  66 static void print_rxifsizeof(char *prefix, char *type);
  67
  68
  69 /*
  70  * Emit the C-routine for the given definition
  71  */
  72 void
  73 emit(definition * def)
  74 {
  75     if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) {
  76         return;
  77     }
  78     print_header(def);
  79     switch (def->def_kind) {
  80     case DEF_UNION:
  81         emit_union(def);
  82         break;
  83     case DEF_ENUM:
  84         emit_enum(def);
  85         break;
  86     case DEF_STRUCT:
  87         emit_struct(def);
  88         break;
  89     case DEF_TYPEDEF:
  90         emit_typedef(def);
  91         break;
  92     default:
  93         break;
  94     }
  95     print_trailer();
  96 }
  97
  98 static int
  99 findtype(definition * def, char *type)
 100 {
 101     if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) {
 102         return (0);
 103     } else {
 104         return (streq(def->def_name, type));
 105     }
 106 }
 107
 108 static int
 109 undefined(char *type)
 110 {
 111     definition *def;
 112
 113     def = (definition *) FINDVAL(defined, type, findtype);
 114     return (def == NULL);
 115 }
 116
 117
 118 static void
 119 print_header(definition * def)
 120 {
 121     space();
 122     f_print(fout, "bool_t\n");
 123     f_print(fout, "xdr_%s(XDR *xdrs, ", def->def_name);
 124     f_print(fout, "%s ", def->def_name);
 125 #if 0
 126     if (def->def_kind != DEF_TYPEDEF
 127         || !isvectordef(def->def.ty.old_type, def->def.ty.rel)) {
 128         f_print(fout, "*");
 129     }
 130 #else
 131     f_print(fout, "*");
 132 #endif
 133     f_print(fout, "objp)\n");
 134     f_print(fout, "{\n");
 135 }
 136
 137 static void
 138 print_trailer(void)
 139 {
 140     f_print(fout, "\treturn (TRUE);\n");
 141     f_print(fout, "}\n");
 142     space();
 143 }
 144
 145
 146 static void
 147 print_ifopen(int indent, char *name)
 148 {
 149     tabify(fout, indent);
 150     f_print(fout, "if (!xdr_%s(xdrs", name);
 151 }
 152
 153
 154 static void
 155 print_ifarg(char *arg)
 156 {
 157     f_print(fout, ", %s", arg);
 158 }
 159
 160
 161 static void
 162 print_ifarg_with_cast(int ptr_to, char *type, char *arg)
 163 {
 164     f_print(fout, ptr_to ? ", (%s *) %s" : ", (%s) %s", type, arg);
 165 }
 166
 167 static void
 168 print_ifsizeof(char *prefix, char *type)
 169 {
 170     if (streq(type, "bool")) {
 171         f_print(fout, ", sizeof(bool_t), (xdrproc_t) xdr_bool");
 172     } else {
 173         f_print(fout, ", sizeof(");
 174         if (undefined(type) && prefix) {
 175             f_print(fout, "%s ", prefix);
 176         }
 177         f_print(fout, "%s), (xdrproc_t) xdr_%s", type, type);
 178     }
 179 }
 180
 181 static void
 182 print_ifclose(int indent)
 183 {
 184     f_print(fout, ")) {\n");
 185     tabify(fout, indent);
 186     f_print(fout, "\treturn (FALSE);\n");
 187     tabify(fout, indent);
 188     f_print(fout, "}\n");
 189 }
 190
 191 static void
 192 space(void)
 193 {
 194     f_print(fout, "\n\n");
 195 }
 196
 197 static void
 198 print_ifstat(int indent, char *prefix, char *type, relation rel, char *amax,
 199              char *objname, char *name)
 200 {
 201     char *alt = NULL;
 202     char *altcast = NULL;
 203
 204     switch (rel) {
 205     case REL_POINTER:
 206         print_ifopen(indent, "pointer");
 207         print_ifarg_with_cast(1, "char *", objname);
 208         print_ifsizeof(prefix, type);
 209         break;
 210     case REL_VECTOR:
 211         if (streq(type, "string")) {
 212             alt = "string";
 213         } else if (streq(type, "opaque")) {
 214             alt = "opaque";
 215             altcast = "caddr_t";
 216         }
 217         if (alt) {
 218             print_ifopen(indent, alt);
 219             if (altcast) {
 220                 print_ifarg_with_cast(0, altcast, objname);
 221             } else {
 222                 print_ifarg(objname);
 223             }
 224         } else {
 225             print_ifopen(indent, "vector");
 226             print_ifarg_with_cast(1, "char", objname);
 227         }
 228         print_ifarg(amax);
 229         if (!alt) {
 230             print_ifsizeof(prefix, type);
 231         }
 232         break;
 233     case REL_ARRAY:
 234         if (streq(type, "string")) {
 235             alt = "string";
 236         } else if (streq(type, "opaque")) {
 237             alt = "bytes";
 238         }
 239         if (streq(type, "string")) {
 240             print_ifopen(indent, alt);
 241             print_ifarg(objname);
 242         } else {
 243             if (alt) {
 244                 print_ifopen(indent, alt);
 245                 print_ifarg("(char **)");
 246             } else {
 247                 print_ifopen(indent, "array");
 248                 print_ifarg("(caddr_t *)");
 249             }
 250             if (*objname == '&') {
 251                 if (brief_flag) {
 252                     f_print(fout, "%s.val, (u_int *)%s.len", objname, objname);
 253                 } else {
 254                     f_print(fout, "%s.%s_val, (u_int *)%s.%s_len",
 255                             objname, name, objname, name);
 256                 }
 257             } else {
 258                 if (brief_flag) {
 259                     f_print(fout, "&%s->val, (u_int *)&%s->len",
 260                             objname, objname);
 261                 } else {
 262                     f_print(fout, "&%s->%s_val, (u_int *)&%s->%s_len",
 263                             objname, name, objname, name);
 264                 }
 265             }
 266         }
 267         print_ifarg(amax);
 268         if (!alt) {
 269             print_ifsizeof(prefix, type);
 270         }
 271         break;
 272     case REL_ALIAS:
 273         print_ifopen(indent, type);
 274         print_ifarg_with_cast(1, type, objname);
 275         break;
 276     }
 277     print_ifclose(indent);
 278 }
 279
 280
 281 static void
 282 emit_enum(definition * def)
 283 {
 284     print_ifopen(1, "enum");
 285     print_ifarg("(enum_t *)objp");
 286     print_ifclose(1);
 287 }
 288
 289
 290 static void
 291 emit_union(definition * def)
 292 {
 293     declaration *dflt;
 294     case_list *cl;
 295     declaration *cs;
 296     char *object;
 297     char *format = "&objp->%s_u.%s";
 298     char *briefformat = "&objp->u.%s";
 299
 300     print_stat(&def->def.un.enum_decl);
 301     f_print(fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name);
 302     for (cl = def->def.un.cases; cl != NULL; cl = cl->next) {
 303         cs = &cl->case_decl;
 304         f_print(fout, "\tcase %s:\n", cl->case_name);
 305         if (!streq(cs->type, "void")) {
 306             object =
 307                 alloc(strlen(def->def_name) + strlen(format) +
 308                       strlen(cs->name) + 1);
 309
 310             if (brief_flag)
 311                 s_print(object, briefformat, cs->name);
 312             else
 313                 s_print(object, format, def->def_name, cs->name);
 314
 315             print_ifstat(2, cs->prefix, cs->type, cs->rel, cs->array_max,
 316                          object, cs->name);
 317             free(object);
 318         }
 319         f_print(fout, "\t\tbreak;\n");
 320     }
 321     dflt = def->def.un.default_decl;
 322     if (dflt != NULL) {
 323         if (!streq(dflt->type, "void")) {
 324             f_print(fout, "\tdefault:\n");
 325             object =
 326                 alloc(strlen(def->def_name) + strlen(format) +
 327                       strlen(dflt->name) + 1);
 328             s_print(object, format, def->def_name, dflt->name);
 329             print_ifstat(2, dflt->prefix, dflt->type, dflt->rel,
 330                          dflt->array_max, object, dflt->name);
 331             free(object);
 332             f_print(fout, "\t\tbreak;\n");
 333         }
 334     } else {
 335         f_print(fout, "\tdefault:\n");
 336         f_print(fout, "\t\treturn (FALSE);\n");
 337     }
 338     f_print(fout, "\t}\n");
 339 }
 340
 341
 342
 343 static void
 344 emit_struct(definition * def)
 345 {
 346     decl_list *dl;
 347
 348     for (dl = def->def.st.decls; dl != NULL; dl = dl->next) {
 349         print_stat(&dl->decl);
 350     }
 351 }
 352
 353
 354
 355
 356 static void
 357 emit_typedef(definition * def)
 358 {
 359     char *prefix = def->def.ty.old_prefix;
 360     char *type = def->def.ty.old_type;
 361     char *amax = def->def.ty.array_max;
 362     relation rel = def->def.ty.rel;
 363
 364     print_ifstat(1, prefix, type, rel, amax, "objp", def->def_name);
 365 }
 366
 367
 368
 369
 370
 371 static void
 372 print_stat(declaration * dec)
 373 {
 374     char *prefix = dec->prefix;
 375     char *type = dec->type;
 376     char *amax = dec->array_max;
 377     relation rel = dec->rel;
 378     char name[256];
 379
 380     if (isvectordef(type, rel)) {
 381         s_print(name, "objp->%s", dec->name);
 382     } else {
 383         s_print(name, "&objp->%s", dec->name);
 384     }
 385     print_ifstat(1, prefix, type, rel, amax, name, dec->name);
 386 }
 387
 388 static void
 389 print_hout(declaration * dec)
 390 {
 391     char prefix[8];
 392
 393     if (hflag) {
 394         if (dec->prefix)
 395             s_print(prefix, "%s ", dec->prefix);
 396         else
 397             prefix[0] = 0;
 398         f_print(fout, "\ntypedef ");
 399         switch (dec->rel) {
 400         case REL_ARRAY:
 401             f_print(fout, "struct %s {\n", dec->name);
 402             if (brief_flag) {
 403                 f_print(fout, "\tu_int %s_len;\n", dec->name);
 404                 f_print(fout, "\t%s%s *%s_val;\n", prefix,
 405                         dec->type, dec->name);
 406             } else {
 407                 f_print(fout, "\tu_int %s_len;\n", dec->name);
 408                 f_print(fout, "\t%s%s *%s_val;\n", prefix,
 409                         dec->type, dec->name);
 410             }
 411             f_print(fout, "} %s", dec->name);
 412             break;
 413         default:
 414             break;
 415         }
 416         f_print(fout, ";\n");
 417         f_print(fout, "bool_t xdr_%s(XDR *xdrs, %s *objp);\n", dec->name,
 418                 dec->name);
 419     }
 420 }
 421
 422
 423 static void
 424 print_cout(declaration * dec)
 425 {
 426     if (cflag) {
 427         space();
 428         f_print(fout, "bool_t\n");
 429         f_print(fout, "xdr_%s(XDR *xdrs, %s *objp)\n", dec->name, dec->name);
 430         f_print(fout, "{\n");
 431         print_ifstat(1, dec->prefix, dec->type, dec->rel, dec->array_max,
 432                      "objp", dec->name);
 433         print_trailer();
 434     }
 435 }
 436
 437
 438 static void
 439 print_rxifopen(char *typename)
 440 {
 441     sprintf(Proc_list->code, "xdr_%s(&z_xdrs", typename);
 442     sprintf(Proc_list->scode, "xdr_%s(z_xdrs", typename);
 443 }
 444
 445
 446 static void
 447 print_rxifarg(char *amp, char *arg, int costant)
 448 {
 449     char code[100], scode[100];
 450
 451     sprintf(code, ", %s%s", amp, arg);
 452     if (costant)
 453         sprintf(scode, ", %s", arg);
 454     else
 455         sprintf(scode, ", &%s", arg);
 456     strcat(Proc_list->code, code);
 457     strcat(Proc_list->scode, scode);
 458 }
 459
 460
 461 static void
 462 print_rxifsizeof(char *prefix, char *type)
 463 {
 464     char name[256];
 465
 466     if (streq(type, "bool")) {
 467         strcat(Proc_list->code, ", sizeof(bool_t), xdr_bool");
 468         strcat(Proc_list->scode, ", sizeof(bool_t), xdr_bool");
 469     } else {
 470         strcat(Proc_list->code, ", sizeof(");
 471         strcat(Proc_list->scode, ", sizeof(");
 472         if (undefined(type) && prefix) {
 473             sprintf(name, "%s ", prefix);
 474             strcat(Proc_list->code, name);
 475             strcat(Proc_list->scode, name);
 476         }
 477         sprintf(name, "%s), xdr_%s", type, type);
 478         strcat(Proc_list->code, name);
 479         strcat(Proc_list->scode, name);
 480     }
 481 }
 482
 483
 484 void
 485 print_param(declaration * dec)
 486 {
 487     char *prefix = dec->prefix;
 488     char *type = dec->type;
 489     char *amax = dec->array_max;
 490     relation rel = dec->rel;
 491     char *name = dec->name;
 492     char *alt = NULL;
 493     char temp[256];
 494     char *objname, *amp = "";
 495
 496     if (rel == REL_POINTER)
 497         Proc_list->pl.param_flag |= INDIRECT_PARAM;
 498     else {
 499         amp = "&";
 500         Proc_list->pl.param_flag &= ~INDIRECT_PARAM;
 501     }
 502     objname = Proc_list->pl.param_name;
 503     switch (rel) {
 504     case REL_POINTER:
 505         print_rxifopen(type);
 506         print_rxifarg(amp, objname, 0);
 507 /*
 508                 print_rxifopen("pointer");
 509                 print_rxifarg(amp, "(char **)", 1);
 510                 sprintf(temp, "%s", objname);
 511                 strcat(Proc_list->code, temp);
 512                 strcat(Proc_list->scode, temp);
 513                 print_rxifsizeof(prefix, type);
 514 */
 515         break;
 516     case REL_VECTOR:
 517         if (streq(type, "string")) {
 518             alt = "string";
 519         } else if (streq(type, "opaque")) {
 520             alt = "opaque";
 521         }
 522         if (alt)
 523             print_rxifopen(alt);
 524         else
 525             print_rxifopen("vector");
 526
 527         print_rxifarg(amp, "(char *)", 0);
 528         sprintf(temp, "%s", objname);
 529         strcat(Proc_list->code, temp);
 530         strcat(Proc_list->scode, temp);
 531         print_rxifarg("", amax, 1);
 532         if (!alt) {
 533             print_rxifsizeof(prefix, type);
 534         }
 535         break;
 536     case REL_ARRAY:
 537         if (streq(type, "string")) {
 538             alt = "string";
 539         } else if (streq(type, "opaque")) {
 540             alt = "bytes";
 541         }
 542         if (streq(type, "string")) {
 543             print_rxifopen(alt);
 544             if ((Proc_list->pl.param_kind == DEF_OUTPARAM)
 545                 || (Proc_list->pl.param_kind == DEF_INOUTPARAM)) {
 546                 Proc_list->pl.param_flag |= OUT_STRING;
 547                 print_rxifarg("", objname, 0);
 548             } else
 549                 print_rxifarg("(char **) &", objname, 0);
 550 /*                      print_rxifarg(amp, objname, 0); */
 551             print_rxifarg("", amax, 1);
 552             if (!alt) {
 553                 print_rxifsizeof(prefix, type);
 554             }
 555         } else {
 556             char typecontents[100];
 557
 558             print_hout(dec);
 559             print_cout(dec);
 560             strcpy(temp, dec->name);
 561             strcpy(typecontents, dec->name);
 562             strcat(typecontents, " *");
 563             strcpy(Proc_list->pl.param_type, typecontents);
 564             sprintf(typecontents, "%s_%d", Proc_list->pl.param_name,
 565                     ++PerProcCounter);
 566             strcpy(Proc_list->pl.param_name, typecontents);
 567             Proc_list->pl.param_flag |= FREETHIS_PARAM;
 568             print_rxifopen(temp);
 569             print_rxifarg(amp, name, 0);
 570         }
 571 /*
 572                         if (alt) {
 573                                 print_rxifopen(alt);
 574                         } else {
 575                                 print_rxifopen("array");
 576                         }
 577                         print_rxifarg(amp, "(char **)", 1);
 578                         if (*objname == '&') {
 579                                 sprintf(temp, "%s.%s_val, (u_int *)%s.%s_len",
 580                                         objname, name, objname, name);
 581                         } else {
 582                                 sprintf(temp, "&%s->%s_val, (u_int *)&%s->%s_len",
 583                                         objname, name, objname, name);
 584                         }
 585                         strcat(Proc_list->code, temp);
 586                         strcat(Proc_list->scode, temp);
 587                 }
 588                 print_rxifarg("", amax, 1);
 589                 if (!alt) {
 590                         print_rxifsizeof(prefix, type);
 591                 }
 592 */
 593         break;
 594     case REL_ALIAS:
 595         print_rxifopen(type);
 596         print_rxifarg(amp, objname, 0);
 597         break;
 598     }
 599     strcat(Proc_list->code, ")");
 600     strcat(Proc_list->scode, ")");
 601 }