rpc_util.c revision 1.1 1 /* @(#)rpc_util.c 2.1 88/08/01 4.0 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 #ifndef lint
31 static char sccsid[] = "@(#)rpc_util.c 1.5 87/06/24 (C) 1987 SMI";
32 #endif
33
34 /*
35 * rpc_util.c, Utility routines for the RPC protocol compiler
36 * Copyright (C) 1987, Sun Microsystems, Inc.
37 */
38 #include <stdio.h>
39 #include "rpc_scan.h"
40 #include "rpc_parse.h"
41 #include "rpc_util.h"
42
43 char curline[MAXLINESIZE]; /* current read line */
44 char *where = curline; /* current point in line */
45 int linenum = 0; /* current line number */
46
47 char *infilename; /* input filename */
48
49 #define NFILES 4
50 char *outfiles[NFILES]; /* output file names */
51 int nfiles;
52
53 FILE *fout; /* file pointer of current output */
54 FILE *fin; /* file pointer of current input */
55
56 list *defined; /* list of defined things */
57
58 int printwhere();
59
60 /*
61 * Reinitialize the world
62 */
63 reinitialize()
64 {
65 bzero(curline, MAXLINESIZE);
66 where = curline;
67 linenum = 0;
68 defined = NULL;
69 }
70
71 /*
72 * string equality
73 */
74 streq(a, b)
75 char *a;
76 char *b;
77 {
78 return (strcmp(a, b) == 0);
79 }
80
81 /*
82 * find a value in a list
83 */
84 char *
85 findval(lst, val, cmp)
86 list *lst;
87 char *val;
88 int (*cmp) ();
89
90 {
91 for (; lst != NULL; lst = lst->next) {
92 if ((*cmp) (lst->val, val)) {
93 return (lst->val);
94 }
95 }
96 return (NULL);
97 }
98
99 /*
100 * store a value in a list
101 */
102 void
103 storeval(lstp, val)
104 list **lstp;
105 char *val;
106 {
107 list **l;
108 list *lst;
109
110 for (l = lstp; *l != NULL; l = (list **) & (*l)->next);
111 lst = ALLOC(list);
112 lst->val = val;
113 lst->next = NULL;
114 *l = lst;
115 }
116
117
118 static
119 findit(def, type)
120 definition *def;
121 char *type;
122 {
123 return (streq(def->def_name, type));
124 }
125
126
127 static char *
128 fixit(type, orig)
129 char *type;
130 char *orig;
131 {
132 definition *def;
133
134 def = (definition *) FINDVAL(defined, type, findit);
135 if (def == NULL || def->def_kind != DEF_TYPEDEF) {
136 return (orig);
137 }
138 switch (def->def.ty.rel) {
139 case REL_VECTOR:
140 return (def->def.ty.old_type);
141 case REL_ALIAS:
142 return (fixit(def->def.ty.old_type, orig));
143 default:
144 return (orig);
145 }
146 }
147
148 char *
149 fixtype(type)
150 char *type;
151 {
152 return (fixit(type, type));
153 }
154
155 char *
156 stringfix(type)
157 char *type;
158 {
159 if (streq(type, "string")) {
160 return ("wrapstring");
161 } else {
162 return (type);
163 }
164 }
165
166 void
167 ptype(prefix, type, follow)
168 char *prefix;
169 char *type;
170 int follow;
171 {
172 if (prefix != NULL) {
173 if (streq(prefix, "enum")) {
174 f_print(fout, "enum ");
175 } else {
176 f_print(fout, "struct ");
177 }
178 }
179 if (streq(type, "bool")) {
180 f_print(fout, "bool_t ");
181 } else if (streq(type, "string")) {
182 f_print(fout, "char *");
183 } else {
184 f_print(fout, "%s ", follow ? fixtype(type) : type);
185 }
186 }
187
188
189 static
190 typedefed(def, type)
191 definition *def;
192 char *type;
193 {
194 if (def->def_kind != DEF_TYPEDEF || def->def.ty.old_prefix != NULL) {
195 return (0);
196 } else {
197 return (streq(def->def_name, type));
198 }
199 }
200
201 isvectordef(type, rel)
202 char *type;
203 relation rel;
204 {
205 definition *def;
206
207 for (;;) {
208 switch (rel) {
209 case REL_VECTOR:
210 return (!streq(type, "string"));
211 case REL_ARRAY:
212 return (0);
213 case REL_POINTER:
214 return (0);
215 case REL_ALIAS:
216 def = (definition *) FINDVAL(defined, type, typedefed);
217 if (def == NULL) {
218 return (0);
219 }
220 type = def->def.ty.old_type;
221 rel = def->def.ty.rel;
222 }
223 }
224 }
225
226
227 static char *
228 locase(str)
229 char *str;
230 {
231 char c;
232 static char buf[100];
233 char *p = buf;
234
235 while (c = *str++) {
236 *p++ = (c >= 'A' && c <= 'Z') ? (c - 'A' + 'a') : c;
237 }
238 *p = 0;
239 return (buf);
240 }
241
242
243 void
244 pvname(pname, vnum)
245 char *pname;
246 char *vnum;
247 {
248 f_print(fout, "%s_%s", locase(pname), vnum);
249 }
250
251
252 /*
253 * print a useful (?) error message, and then die
254 */
255 void
256 error(msg)
257 char *msg;
258 {
259 printwhere();
260 f_print(stderr, "%s, line %d: ", infilename, linenum);
261 f_print(stderr, "%s\n", msg);
262 crash();
263 }
264
265 /*
266 * Something went wrong, unlink any files that we may have created and then
267 * die.
268 */
269 crash()
270 {
271 int i;
272
273 for (i = 0; i < nfiles; i++) {
274 (void) unlink(outfiles[i]);
275 }
276 exit(1);
277 }
278
279
280 void
281 record_open(file)
282 char *file;
283 {
284 if (nfiles < NFILES) {
285 outfiles[nfiles++] = file;
286 } else {
287 f_print(stderr, "too many files!\n");
288 crash();
289 }
290 }
291
292 static char expectbuf[100];
293 static char *toktostr();
294
295 /*
296 * error, token encountered was not the expected one
297 */
298 void
299 expected1(exp1)
300 tok_kind exp1;
301 {
302 s_print(expectbuf, "expected '%s'",
303 toktostr(exp1));
304 error(expectbuf);
305 }
306
307 /*
308 * error, token encountered was not one of two expected ones
309 */
310 void
311 expected2(exp1, exp2)
312 tok_kind exp1, exp2;
313 {
314 s_print(expectbuf, "expected '%s' or '%s'",
315 toktostr(exp1),
316 toktostr(exp2));
317 error(expectbuf);
318 }
319
320 /*
321 * error, token encountered was not one of 3 expected ones
322 */
323 void
324 expected3(exp1, exp2, exp3)
325 tok_kind exp1, exp2, exp3;
326 {
327 s_print(expectbuf, "expected '%s', '%s' or '%s'",
328 toktostr(exp1),
329 toktostr(exp2),
330 toktostr(exp3));
331 error(expectbuf);
332 }
333
334 void
335 tabify(f, tab)
336 FILE *f;
337 int tab;
338 {
339 while (tab--) {
340 (void) fputc('\t', f);
341 }
342 }
343
344
345
346 static token tokstrings[] = {
347 {TOK_IDENT, "identifier"},
348 {TOK_CONST, "const"},
349 {TOK_RPAREN, ")"},
350 {TOK_LPAREN, "("},
351 {TOK_RBRACE, "}"},
352 {TOK_LBRACE, "{"},
353 {TOK_LBRACKET, "["},
354 {TOK_RBRACKET, "]"},
355 {TOK_STAR, "*"},
356 {TOK_COMMA, ","},
357 {TOK_EQUAL, "="},
358 {TOK_COLON, ":"},
359 {TOK_SEMICOLON, ";"},
360 {TOK_UNION, "union"},
361 {TOK_STRUCT, "struct"},
362 {TOK_SWITCH, "switch"},
363 {TOK_CASE, "case"},
364 {TOK_DEFAULT, "default"},
365 {TOK_ENUM, "enum"},
366 {TOK_TYPEDEF, "typedef"},
367 {TOK_INT, "int"},
368 {TOK_SHORT, "short"},
369 {TOK_LONG, "long"},
370 {TOK_UNSIGNED, "unsigned"},
371 {TOK_DOUBLE, "double"},
372 {TOK_FLOAT, "float"},
373 {TOK_CHAR, "char"},
374 {TOK_STRING, "string"},
375 {TOK_OPAQUE, "opaque"},
376 {TOK_BOOL, "bool"},
377 {TOK_VOID, "void"},
378 {TOK_PROGRAM, "program"},
379 {TOK_VERSION, "version"},
380 {TOK_EOF, "??????"}
381 };
382
383 static char *
384 toktostr(kind)
385 tok_kind kind;
386 {
387 token *sp;
388
389 for (sp = tokstrings; sp->kind != TOK_EOF && sp->kind != kind; sp++);
390 return (sp->str);
391 }
392
393
394
395 static
396 printbuf()
397 {
398 char c;
399 int i;
400 int cnt;
401
402 # define TABSIZE 4
403
404 for (i = 0; c = curline[i]; i++) {
405 if (c == '\t') {
406 cnt = 8 - (i % TABSIZE);
407 c = ' ';
408 } else {
409 cnt = 1;
410 }
411 while (cnt--) {
412 (void) fputc(c, stderr);
413 }
414 }
415 }
416
417
418 static
419 printwhere()
420 {
421 int i;
422 char c;
423 int cnt;
424
425 printbuf();
426 for (i = 0; i < where - curline; i++) {
427 c = curline[i];
428 if (c == '\t') {
429 cnt = 8 - (i % TABSIZE);
430 } else {
431 cnt = 1;
432 }
433 while (cnt--) {
434 (void) fputc('^', stderr);
435 }
436 }
437 (void) fputc('\n', stderr);
438 }
439