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.
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
25 * Sun Microsystems, Inc.
27 * Mountain View, California 94043
29 * @(#)rpc_parse.c 1.8 89/02/22 (C) 1987 SMI
30 * $DragonFly: src/usr.bin/rpcgen/rpc_parse.c,v 1.7 2004/06/19 16:40:36 joerg Exp $
33 #ident "@(#)rpc_parse.c 1.12 93/07/05 SMI"
36 * rpc_parse.c, Parser for the RPC protocol compiler
37 * Copyright (C) 1987 Sun Microsystems, Inc.
41 #include "rpc/types.h"
43 #include "rpc_parse.h"
48 extern char *make_argname(char *, char *);
49 static void isdefined(definition *);
50 static void def_struct(definition *);
51 static void def_program(definition *);
52 static void def_enum(definition *);
53 static void def_const(definition *);
54 static void def_union(definition *);
55 static void def_typedef( definition *);
56 static void get_declaration( declaration *, defkind);
57 static void get_prog_declaration( declaration *, defkind, int);
58 static void get_type(char **, char **, defkind);
59 static void unsigned_dec(char **);
62 * return the next definition you see
70 defp = ALLOC(definition);
94 error("definition keyword expected");
96 scan(TOK_SEMICOLON, &tok);
102 isdefined(definition *defp)
104 STOREVAL(&defined, defp);
108 def_struct(definition *defp)
115 defp->def_kind = DEF_STRUCT;
117 scan(TOK_IDENT, &tok);
118 defp->def_name = tok.str;
119 scan(TOK_LBRACE, &tok);
120 tailp = &defp->def.st.decls;
122 get_declaration(&dec, DEF_STRUCT);
123 decls = ALLOC(decl_list);
126 tailp = &decls->next;
127 scan(TOK_SEMICOLON, &tok);
129 } while (tok.kind != TOK_RBRACE);
135 def_program(definition *defp)
142 version_list **vtailp;
146 bool_t isvoid = FALSE; /* whether first argument is void */
147 defp->def_kind = DEF_PROGRAM;
148 scan(TOK_IDENT, &tok);
149 defp->def_name = tok.str;
150 scan(TOK_LBRACE, &tok);
151 vtailp = &defp->def.pr.versions;
152 tailp = &defp->def.st.decls;
153 scan(TOK_VERSION, &tok);
155 scan(TOK_IDENT, &tok);
156 vlist = ALLOC(version_list);
157 vlist->vers_name = tok.str;
158 scan(TOK_LBRACE, &tok);
159 ptailp = &vlist->procs;
161 /* get result type */
162 plist = ALLOC(proc_list);
163 get_type(&plist->res_prefix, &plist->res_type,
165 if (streq(plist->res_type, "opaque"))
166 error("illegal result type");
167 scan(TOK_IDENT, &tok);
168 plist->proc_name = tok.str;
169 scan(TOK_LPAREN, &tok);
170 /* get args - first one */
174 * type of DEF_PROGRAM in the first
175 * get_prog_declaration and DEF_STURCT in the next
176 * allows void as argument if it is the only argument
178 get_prog_declaration(&dec, DEF_PROGRAM, num_args);
179 if (streq(dec.type, "void"))
181 decls = ALLOC(decl_list);
182 plist->args.decls = decls;
184 tailp = &decls->next;
186 while (peekscan(TOK_COMMA, &tok)) {
188 get_prog_declaration(&dec, DEF_STRUCT,
190 decls = ALLOC(decl_list);
193 if (streq(dec.type, "void"))
195 tailp = &decls->next;
197 /* multiple arguments are only allowed in newstyle */
198 if (!newstyle && num_args > 1)
199 error("only one argument is allowed");
200 if (isvoid && num_args > 1)
201 error("illegal use of void in program definition");
203 scan(TOK_RPAREN, &tok);
204 scan(TOK_EQUAL, &tok);
206 scan(TOK_SEMICOLON, &tok);
207 plist->proc_num = tok.str;
208 plist->arg_num = num_args;
210 ptailp = &plist->next;
212 } while (tok.kind != TOK_RBRACE);
215 vtailp = &vlist->next;
216 scan(TOK_RBRACE, &tok);
217 scan(TOK_EQUAL, &tok);
219 vlist->vers_num = tok.str;
220 /* make the argument structure name for each arg */
221 for (plist = vlist->procs; plist != NULL; plist = plist->next) {
222 plist->args.argname = make_argname(plist->proc_name,
224 /* free the memory ?? */
226 scan(TOK_SEMICOLON, &tok);
227 scan2(TOK_VERSION, TOK_RBRACE, &tok);
228 } while (tok.kind == TOK_VERSION);
229 scan(TOK_EQUAL, &tok);
231 defp->def.pr.prog_num = tok.str;
237 def_enum(definition *defp)
241 enumval_list **tailp;
243 defp->def_kind = DEF_ENUM;
244 scan(TOK_IDENT, &tok);
245 defp->def_name = tok.str;
246 scan(TOK_LBRACE, &tok);
247 tailp = &defp->def.en.vals;
249 scan(TOK_IDENT, &tok);
250 elist = ALLOC(enumval_list);
251 elist->name = tok.str;
252 elist->assignment = NULL;
253 scan3(TOK_COMMA, TOK_RBRACE, TOK_EQUAL, &tok);
254 if (tok.kind == TOK_EQUAL) {
256 elist->assignment = tok.str;
257 scan2(TOK_COMMA, TOK_RBRACE, &tok);
260 tailp = &elist->next;
261 } while (tok.kind != TOK_RBRACE);
266 def_const(definition *defp)
270 defp->def_kind = DEF_CONST;
271 scan(TOK_IDENT, &tok);
272 defp->def_name = tok.str;
273 scan(TOK_EQUAL, &tok);
274 scan2(TOK_IDENT, TOK_STRCONST, &tok);
275 defp->def.co = tok.str;
279 def_union(definition *defp)
287 defp->def_kind = DEF_UNION;
288 scan(TOK_IDENT, &tok);
289 defp->def_name = tok.str;
290 scan(TOK_SWITCH, &tok);
291 scan(TOK_LPAREN, &tok);
292 get_declaration(&dec, DEF_UNION);
293 defp->def.un.enum_decl = dec;
294 tailp = &defp->def.un.cases;
295 scan(TOK_RPAREN, &tok);
296 scan(TOK_LBRACE, &tok);
297 scan(TOK_CASE, &tok);
298 while (tok.kind == TOK_CASE) {
299 scan2(TOK_IDENT, TOK_CHARCONST, &tok);
300 cases = ALLOC(case_list);
301 cases->case_name = tok.str;
302 scan(TOK_COLON, &tok);
303 /* now peek at next token */
305 if (peekscan(TOK_CASE, &tok)){
307 scan2(TOK_IDENT, TOK_CHARCONST, &tok);
309 /* continued case statement */
311 tailp = &cases->next;
312 cases = ALLOC(case_list);
313 cases->case_name = tok.str;
314 scan(TOK_COLON, &tok);
315 } while (peekscan(TOK_CASE, &tok));
319 tailp = &cases->next;
320 cases = ALLOC(case_list);
323 get_declaration(&dec, DEF_UNION);
324 cases->case_decl = dec;
325 cases->contflag = 0; /* no continued case statement */
327 tailp = &cases->next;
328 scan(TOK_SEMICOLON, &tok);
330 scan3(TOK_CASE, TOK_DEFAULT, TOK_RBRACE, &tok);
333 if (tok.kind == TOK_DEFAULT) {
334 scan(TOK_COLON, &tok);
335 get_declaration(&dec, DEF_UNION);
336 defp->def.un.default_decl = ALLOC(declaration);
337 *defp->def.un.default_decl = dec;
338 scan(TOK_SEMICOLON, &tok);
339 scan(TOK_RBRACE, &tok);
341 defp->def.un.default_decl = NULL;
345 static char* reserved_words[] =
362 static char* reserved_types[] =
370 * check that the given name is not one that would eventually result in
371 * xdr routines that would conflict with internal XDR routines.
374 check_type_name(char* name, int new_type)
379 for (i = 0; reserved_words[i] != NULL; i++) {
380 if (strcmp(name, reserved_words[i]) == 0) {
382 "illegal (reserved) name :\'%s\' in type definition",
388 for (i = 0; reserved_types[i] != NULL; i++) {
389 if (strcmp(name, reserved_types[i]) == 0) {
391 "illegal (reserved) name :\'%s\' in type definition",
402 def_typedef(definition *defp)
406 defp->def_kind = DEF_TYPEDEF;
407 get_declaration(&dec, DEF_TYPEDEF);
408 defp->def_name = dec.name;
409 check_type_name(dec.name, 1);
410 defp->def.ty.old_prefix = dec.prefix;
411 defp->def.ty.old_type = dec.type;
412 defp->def.ty.rel = dec.rel;
413 defp->def.ty.array_max = dec.array_max;
417 get_declaration(declaration *dec, defkind dkind)
421 get_type(&dec->prefix, &dec->type, dkind);
422 dec->rel = REL_ALIAS;
423 if (streq(dec->type, "void"))
426 check_type_name(dec->type, 0);
427 scan2(TOK_STAR, TOK_IDENT, &tok);
428 if (tok.kind == TOK_STAR) {
429 dec->rel = REL_POINTER;
430 scan(TOK_IDENT, &tok);
433 if (peekscan(TOK_LBRACKET, &tok)) {
434 if (dec->rel == REL_POINTER)
435 error("no array-of-pointer declarations -- use typedef");
436 dec->rel = REL_VECTOR;
438 dec->array_max = tok.str;
439 scan(TOK_RBRACKET, &tok);
440 } else if (peekscan(TOK_LANGLE, &tok)) {
441 if (dec->rel == REL_POINTER)
442 error("no array-of-pointer declarations -- use typedef");
443 dec->rel = REL_ARRAY;
444 if (peekscan(TOK_RANGLE, &tok)) {
445 dec->array_max = "~0"; /* unspecified size, use max */
448 dec->array_max = tok.str;
449 scan(TOK_RANGLE, &tok);
452 if (streq(dec->type, "opaque")) {
453 if (dec->rel != REL_ARRAY && dec->rel != REL_VECTOR) {
454 error("array declaration expected");
456 } else if (streq(dec->type, "string")) {
457 if (dec->rel != REL_ARRAY) {
458 error("variable-length array declaration expected");
465 get_prog_declaration(declaration *dec, defkind dkind, int num)
468 char name[10]; /* argument name */
470 if (dkind == DEF_PROGRAM) {
472 if (tok.kind == TOK_RPAREN) { /* no arguments */
473 dec->rel = REL_ALIAS;
480 get_type(&dec->prefix, &dec->type, dkind);
481 dec->rel = REL_ALIAS;
482 if (peekscan(TOK_IDENT, &tok)) /* optional name of argument */
483 strcpy(name, tok.str);
485 sprintf(name, "%s%d", ARGNAME, num);
486 /* default name of argument */
488 dec->name = (char *) strdup(name);
489 if (streq(dec->type, "void")) {
493 if (streq(dec->type, "opaque"))
494 error("opaque -- illegal argument type");
495 if (peekscan(TOK_STAR, &tok)) {
496 if (streq(dec->type, "string"))
497 error("pointer to string not allowed in program arguments\n");
498 dec->rel = REL_POINTER;
499 if (peekscan(TOK_IDENT, &tok)) {
500 /* optional name of argument */
501 dec->name = strdup(tok.str);
504 if (peekscan(TOK_LANGLE, &tok)) {
505 if (!streq(dec->type, "string"))
506 error("arrays cannot be declared as arguments to procedures -- use typedef");
507 dec->rel = REL_ARRAY;
508 if (peekscan(TOK_RANGLE, &tok)) {
509 dec->array_max = "~0";
510 /* unspecified size, use max */
513 dec->array_max = tok.str;
514 scan(TOK_RANGLE, &tok);
517 if (streq(dec->type, "string")) {
518 if (dec->rel != REL_ARRAY) {
520 * .x specifies just string as
524 dec->rel = REL_ARRAY;
525 dec->array_max = "~0"; /* unspecified size, use max */
531 get_type(char **prefixp, char **typep, defkind dkind)
545 scan(TOK_IDENT, &tok);
553 peekscan(TOK_INT, &tok);
557 peekscan(TOK_INT, &tok);
561 peekscan(TOK_INT, &tok);
565 if (dkind != DEF_UNION && dkind != DEF_PROGRAM)
566 error("voids allowed only inside union and program definitions with one argument");
580 error("expected type specifier");
585 unsigned_dec(char **typep)
598 peekscan(TOK_INT, &tok);
603 peekscan(TOK_INT, &tok);
607 *typep = "u_int64_t";
608 peekscan(TOK_INT, &tok);