2 * From: @(#)rpc_parse.c 1.8 89/02/22
4 * Copyright (c) 2010, Oracle America, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following
13 * disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 * * Neither the name of the "Oracle America, Inc." nor the names of its
16 * contributors may be used to endorse or promote products derived
17 * from this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
24 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
26 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 * rpc_parse.c, Parser for the RPC protocol compiler
35 * Copyright (C) 1987 Sun Microsystems, Inc.
39 #include "rpc/types.h"
41 #include "rpc_parse.h"
47 static void isdefined (definition * defp);
48 static void def_struct (definition * defp);
49 static void def_program (definition * defp);
50 static void def_enum (definition * defp);
51 static void def_const (definition * defp);
52 static void def_union (definition * defp);
53 static void check_type_name (const char *name, int new_type);
54 static void def_typedef (definition * defp);
55 static void get_declaration (declaration * dec, defkind dkind);
56 static void get_prog_declaration (declaration * dec, defkind dkind, int num);
57 static void get_type (const char **prefixp, const char **typep, defkind dkind);
58 static void unsigned_dec (const char **typep);
61 * return the next definition you see
69 defp = ALLOC (definition);
95 error ("definition keyword expected");
97 scan (TOK_SEMICOLON, &tok);
103 isdefined (definition * defp)
105 STOREVAL (&defined, defp);
109 def_struct (definition * defp)
116 defp->def_kind = DEF_STRUCT;
118 scan (TOK_IDENT, &tok);
119 defp->def_name = tok.str;
120 scan (TOK_LBRACE, &tok);
121 tailp = &defp->def.st.decls;
124 get_declaration (&dec, DEF_STRUCT);
125 decls = ALLOC (decl_list);
128 tailp = &decls->next;
129 scan (TOK_SEMICOLON, &tok);
132 while (tok.kind != TOK_RBRACE);
138 def_program (definition * defp)
145 version_list **vtailp;
149 bool_t isvoid = FALSE; /* whether first argument is void */
150 defp->def_kind = DEF_PROGRAM;
151 scan (TOK_IDENT, &tok);
152 defp->def_name = tok.str;
153 scan (TOK_LBRACE, &tok);
154 vtailp = &defp->def.pr.versions;
155 tailp = &defp->def.st.decls;
156 scan (TOK_VERSION, &tok);
159 scan (TOK_IDENT, &tok);
160 vlist = ALLOC (version_list);
161 vlist->vers_name = tok.str;
162 scan (TOK_LBRACE, &tok);
163 ptailp = &vlist->procs;
166 /* get result type */
167 plist = ALLOC (proc_list);
168 get_type (&plist->res_prefix, &plist->res_type,
170 if (streq (plist->res_type, "opaque"))
172 error ("illegal result type");
174 scan (TOK_IDENT, &tok);
175 plist->proc_name = tok.str;
176 scan (TOK_LPAREN, &tok);
177 /* get args - first one */
180 /* type of DEF_PROGRAM in the first
181 * get_prog_declaration and DEF_STURCT in the next
182 * allows void as argument if it is the only argument
184 get_prog_declaration (&dec, DEF_PROGRAM, num_args);
185 if (streq (dec.type, "void"))
187 decls = ALLOC (decl_list);
188 plist->args.decls = decls;
190 tailp = &decls->next;
192 while (peekscan (TOK_COMMA, &tok))
195 get_prog_declaration (&dec, DEF_STRUCT,
197 decls = ALLOC (decl_list);
200 if (streq (dec.type, "void"))
202 tailp = &decls->next;
204 /* multiple arguments are only allowed in newstyle */
205 if (!newstyle && num_args > 1)
207 error ("only one argument is allowed");
209 if (isvoid && num_args > 1)
211 error ("illegal use of void in program definition");
214 scan (TOK_RPAREN, &tok);
215 scan (TOK_EQUAL, &tok);
217 scan (TOK_SEMICOLON, &tok);
218 plist->proc_num = tok.str;
219 plist->arg_num = num_args;
221 ptailp = &plist->next;
224 while (tok.kind != TOK_RBRACE);
227 vtailp = &vlist->next;
228 scan (TOK_RBRACE, &tok);
229 scan (TOK_EQUAL, &tok);
231 vlist->vers_num = tok.str;
232 /* make the argument structure name for each arg */
233 for (plist = vlist->procs; plist != NULL;
236 plist->args.argname = make_argname (plist->proc_name,
238 /* free the memory ?? */
240 scan (TOK_SEMICOLON, &tok);
241 scan2 (TOK_VERSION, TOK_RBRACE, &tok);
243 while (tok.kind == TOK_VERSION);
244 scan (TOK_EQUAL, &tok);
246 defp->def.pr.prog_num = tok.str;
252 def_enum (definition * defp)
256 enumval_list **tailp;
258 defp->def_kind = DEF_ENUM;
259 scan (TOK_IDENT, &tok);
260 defp->def_name = tok.str;
261 scan (TOK_LBRACE, &tok);
262 tailp = &defp->def.en.vals;
265 scan (TOK_IDENT, &tok);
266 elist = ALLOC (enumval_list);
267 elist->name = tok.str;
268 elist->assignment = NULL;
269 scan3 (TOK_COMMA, TOK_RBRACE, TOK_EQUAL, &tok);
270 if (tok.kind == TOK_EQUAL)
273 elist->assignment = tok.str;
274 scan2 (TOK_COMMA, TOK_RBRACE, &tok);
277 tailp = &elist->next;
279 while (tok.kind != TOK_RBRACE);
284 def_const (definition * defp)
288 defp->def_kind = DEF_CONST;
289 scan (TOK_IDENT, &tok);
290 defp->def_name = tok.str;
291 scan (TOK_EQUAL, &tok);
292 scan2 (TOK_IDENT, TOK_STRCONST, &tok);
293 defp->def.co = tok.str;
297 def_union (definition *defp)
302 /* case_list *tcase; */
308 defp->def_kind = DEF_UNION;
309 scan (TOK_IDENT, &tok);
310 defp->def_name = tok.str;
311 scan (TOK_SWITCH, &tok);
312 scan (TOK_LPAREN, &tok);
313 get_declaration (&dec, DEF_UNION);
314 defp->def.un.enum_decl = dec;
315 tailp = &defp->def.un.cases;
316 scan (TOK_RPAREN, &tok);
317 scan (TOK_LBRACE, &tok);
318 scan (TOK_CASE, &tok);
319 while (tok.kind == TOK_CASE)
321 scan2 (TOK_IDENT, TOK_CHARCONST, &tok);
322 cases = ALLOC (case_list);
323 cases->case_name = tok.str;
324 scan (TOK_COLON, &tok);
325 /* now peek at next token */
329 if (peekscan (TOK_CASE, &tok))
334 scan2 (TOK_IDENT, TOK_CHARCONST, &tok);
335 cases->contflag = 1; /* continued case statement */
337 tailp = &cases->next;
338 cases = ALLOC (case_list);
339 cases->case_name = tok.str;
340 scan (TOK_COLON, &tok);
343 while (peekscan (TOK_CASE, &tok));
350 tailp = &cases->next;
351 cases = ALLOC (case_list);
355 get_declaration (&dec, DEF_UNION);
356 cases->case_decl = dec;
357 cases->contflag = 0; /* no continued case statement */
359 tailp = &cases->next;
360 scan (TOK_SEMICOLON, &tok);
362 scan3 (TOK_CASE, TOK_DEFAULT, TOK_RBRACE, &tok);
365 if (tok.kind == TOK_DEFAULT)
367 scan (TOK_COLON, &tok);
368 get_declaration (&dec, DEF_UNION);
369 defp->def.un.default_decl = ALLOC (declaration);
370 *defp->def.un.default_decl = dec;
371 scan (TOK_SEMICOLON, &tok);
372 scan (TOK_RBRACE, &tok);
376 defp->def.un.default_decl = NULL;
380 static const char *reserved_words[] =
397 static const char *reserved_types[] =
405 * check that the given name is not one that would eventually result in
406 * xdr routines that would conflict with internal XDR routines.
409 check_type_name (const char *name, int new_type)
414 for (i = 0; reserved_words[i] != NULL; i++)
416 if (strcmp (name, reserved_words[i]) == 0)
419 "illegal (reserved) name :\'%s\' in type definition", name);
425 for (i = 0; reserved_types[i] != NULL; i++)
427 if (strcmp (name, reserved_types[i]) == 0)
430 "illegal (reserved) name :\'%s\' in type definition", name);
440 def_typedef (definition * defp)
444 defp->def_kind = DEF_TYPEDEF;
445 get_declaration (&dec, DEF_TYPEDEF);
446 defp->def_name = dec.name;
447 check_type_name (dec.name, 1);
448 defp->def.ty.old_prefix = dec.prefix;
449 defp->def.ty.old_type = dec.type;
450 defp->def.ty.rel = dec.rel;
451 defp->def.ty.array_max = dec.array_max;
455 get_declaration (declaration * dec, defkind dkind)
459 get_type (&dec->prefix, &dec->type, dkind);
460 dec->rel = REL_ALIAS;
461 if (streq (dec->type, "void"))
466 check_type_name (dec->type, 0);
468 scan2 (TOK_STAR, TOK_IDENT, &tok);
469 if (tok.kind == TOK_STAR)
471 dec->rel = REL_POINTER;
472 scan (TOK_IDENT, &tok);
475 if (peekscan (TOK_LBRACKET, &tok))
477 if (dec->rel == REL_POINTER)
479 error ("no array-of-pointer declarations -- use typedef");
481 dec->rel = REL_VECTOR;
483 dec->array_max = tok.str;
484 scan (TOK_RBRACKET, &tok);
486 else if (peekscan (TOK_LANGLE, &tok))
488 if (dec->rel == REL_POINTER)
490 error ("no array-of-pointer declarations -- use typedef");
492 dec->rel = REL_ARRAY;
493 if (peekscan (TOK_RANGLE, &tok))
495 dec->array_max = "~0"; /* unspecified size, use max */
500 dec->array_max = tok.str;
501 scan (TOK_RANGLE, &tok);
504 if (streq (dec->type, "opaque"))
506 if (dec->rel != REL_ARRAY && dec->rel != REL_VECTOR)
508 error ("array declaration expected");
511 else if (streq (dec->type, "string"))
513 if (dec->rel != REL_ARRAY)
515 error ("variable-length array declaration expected");
521 get_prog_declaration (declaration * dec, defkind dkind, int num /* arg number */ )
524 char name[10]; /* argument name */
526 if (dkind == DEF_PROGRAM)
529 if (tok.kind == TOK_RPAREN)
531 dec->rel = REL_ALIAS;
538 get_type (&dec->prefix, &dec->type, dkind);
539 dec->rel = REL_ALIAS;
540 if (peekscan (TOK_IDENT, &tok)) /* optional name of argument */
541 strcpy (name, tok.str);
543 sprintf (name, "%s%d", ARGNAME, num); /* default name of argument */
545 dec->name = (char *) strdup (name);
547 if (streq (dec->type, "void"))
552 if (streq (dec->type, "opaque"))
554 error ("opaque -- illegal argument type");
556 if (peekscan (TOK_STAR, &tok))
558 if (streq (dec->type, "string"))
560 error ("pointer to string not allowed in program arguments\n");
562 dec->rel = REL_POINTER;
563 if (peekscan (TOK_IDENT, &tok)) /* optional name of argument */
564 dec->name = strdup (tok.str);
566 if (peekscan (TOK_LANGLE, &tok))
568 if (!streq (dec->type, "string"))
570 error ("arrays cannot be declared as arguments to procedures -- use typedef");
572 dec->rel = REL_ARRAY;
573 if (peekscan (TOK_RANGLE, &tok))
575 dec->array_max = "~0"; /* unspecified size, use max */
580 dec->array_max = tok.str;
581 scan (TOK_RANGLE, &tok);
584 if (streq (dec->type, "string"))
586 if (dec->rel != REL_ARRAY)
587 { /* .x specifies just string as
591 dec->rel = REL_ARRAY;
592 dec->array_max = "~0"; /* unspecified size, use max */
598 get_type (const char **prefixp, const char **typep, defkind dkind)
613 scan (TOK_IDENT, &tok);
617 unsigned_dec (typep);
621 (void) peekscan (TOK_INT, &tok);
625 (void) peekscan (TOK_INT, &tok);
629 (void) peekscan(TOK_INT, &tok);
632 if (dkind != DEF_UNION && dkind != DEF_PROGRAM)
634 error ("voids allowed only inside union and program definitions with one argument");
648 error ("expected type specifier");
653 unsigned_dec (const char **typep)
667 (void) peekscan (TOK_INT, &tok);
672 (void) peekscan (TOK_INT, &tok);
677 (void) peekscan(TOK_INT, &tok);