[BZ #681]
[glibc.git] / sunrpc / rpc_cout.c
bloba803feb65a7f39bfa4cfdde0165747e0ac6e55c2
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.
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.
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.
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.
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.
26 * Sun Microsystems, Inc.
27 * 2550 Garcia Avenue
28 * Mountain View, California 94043
32 * From: @(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI
34 #if defined(LIBC_SCCS) && !defined(lint)
35 static const char cout_rcsid[] =
36 "$Id$";
37 #endif
40 * rpc_cout.c, XDR routine outputter for the RPC protocol compiler
42 #include <ctype.h>
43 #include <stdio.h>
44 #include <string.h>
45 #include "rpc_parse.h"
46 #include "rpc_util.h"
47 #include "proto.h"
49 static void emit_enum (definition * def);
50 static void emit_program (const definition * def);
51 static void emit_union (const definition * def);
52 static void emit_struct (definition * def);
53 static void emit_typedef (const definition * def);
54 static void emit_inline (int indent, declaration * decl, int flag);
55 static void emit_single_in_line (int indent, declaration *decl, int flag,
56 relation rel);
57 static int findtype (const definition * def, const char *type);
58 static int undefined (const char *type);
59 static void print_generic_header (const char *procname, int pointerp);
60 static void print_ifopen (int indent, const char *name);
61 static void print_ifarg (const char *arg);
62 static void print_ifsizeof (int indent, const char *prefix, const char *type);
63 static void print_ifclose (int indent);
64 static void print_ifstat (int indent, const char *prefix, const char *type,
65 relation rel, const char *amax,
66 const char *objname, const char *name);
67 static void print_stat (int indent, const declaration * dec);
68 static void print_header (const definition * def);
69 static void print_trailer (void);
70 static char *upcase (const char *str);
73 * Emit the C-routine for the given definition
75 void
76 emit (definition * def)
78 if (def->def_kind == DEF_CONST)
80 return;
82 if (def->def_kind == DEF_PROGRAM)
84 emit_program (def);
85 return;
87 if (def->def_kind == DEF_TYPEDEF)
89 /* now we need to handle declarations like
90 struct typedef foo foo;
91 since we don't want this to be expanded
92 into 2 calls to xdr_foo */
94 if (strcmp (def->def.ty.old_type, def->def_name) == 0)
95 return;
98 print_header (def);
99 switch (def->def_kind)
101 case DEF_UNION:
102 emit_union (def);
103 break;
104 case DEF_ENUM:
105 emit_enum (def);
106 break;
107 case DEF_STRUCT:
108 emit_struct (def);
109 break;
110 case DEF_TYPEDEF:
111 emit_typedef (def);
112 break;
113 default:
114 /* can't happen */
115 break;
117 print_trailer ();
120 static int
121 findtype (const definition * def, const char *type)
123 if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST)
125 return 0;
127 else
129 return (streq (def->def_name, type));
133 static int
134 undefined (const char *type)
136 definition *def;
137 def = (definition *) FINDVAL (defined, type, findtype);
138 return (def == NULL);
142 static void
143 print_generic_header (const char *procname, int pointerp)
145 f_print (fout, "\n");
146 f_print (fout, "bool_t\n");
147 if (Cflag)
149 f_print (fout, "xdr_%s (", procname);
150 f_print (fout, "XDR *xdrs, ");
151 f_print (fout, "%s ", procname);
152 if (pointerp)
153 f_print (fout, "*");
154 f_print (fout, "objp)\n{\n");
156 else
158 f_print (fout, "xdr_%s (xdrs, objp)\n", procname);
159 f_print (fout, "\tXDR *xdrs;\n");
160 f_print (fout, "\t%s ", procname);
161 if (pointerp)
162 f_print (fout, "*");
163 f_print (fout, "objp;\n{\n");
167 static void
168 print_header (const definition * def)
170 print_generic_header (def->def_name,
171 def->def_kind != DEF_TYPEDEF ||
172 !isvectordef (def->def.ty.old_type,
173 def->def.ty.rel));
175 /* Now add Inline support */
177 if (inlineflag == 0)
178 return;
179 /*May cause lint to complain. but ... */
180 f_print (fout, "\tregister int32_t *buf;\n\n");
183 static void
184 print_prog_header (const proc_list * plist)
186 print_generic_header (plist->args.argname, 1);
189 static void
190 print_trailer (void)
192 f_print (fout, "\treturn TRUE;\n");
193 f_print (fout, "}\n");
197 static void
198 print_ifopen (int indent, const char *name)
200 tabify (fout, indent);
201 f_print (fout, " if (!xdr_%s (xdrs", name);
204 static void
205 print_ifarg (const char *arg)
207 f_print (fout, ", %s", arg);
210 static void
211 print_ifsizeof (int indent, const char *prefix, const char *type)
213 if (indent)
215 fprintf (fout, ",\n");
216 tabify (fout, indent);
218 else
219 fprintf (fout, ", ");
221 if (streq (type, "bool"))
222 fprintf (fout, "sizeof (bool_t), (xdrproc_t) xdr_bool");
223 else
225 fprintf (fout, "sizeof (");
226 if (undefined (type) && prefix)
228 f_print (fout, "%s ", prefix);
230 fprintf (fout, "%s), (xdrproc_t) xdr_%s", type, type);
234 static void
235 print_ifclose (int indent)
237 f_print (fout, "))\n");
238 tabify (fout, indent);
239 f_print (fout, "\t return FALSE;\n");
242 static void
243 print_ifstat (int indent, const char *prefix, const char *type, relation rel,
244 const char *amax, const char *objname, const char *name)
246 const char *alt = NULL;
248 switch (rel)
250 case REL_POINTER:
251 print_ifopen (indent, "pointer");
252 print_ifarg ("(char **)");
253 f_print (fout, "%s", objname);
254 print_ifsizeof (0, prefix, type);
255 break;
256 case REL_VECTOR:
257 if (streq (type, "string"))
259 alt = "string";
261 else if (streq (type, "opaque"))
263 alt = "opaque";
265 if (alt)
267 print_ifopen (indent, alt);
268 print_ifarg (objname);
270 else
272 print_ifopen (indent, "vector");
273 print_ifarg ("(char *)");
274 f_print (fout, "%s", objname);
276 print_ifarg (amax);
277 if (!alt)
279 print_ifsizeof (indent + 1, prefix, type);
281 break;
282 case REL_ARRAY:
283 if (streq (type, "string"))
285 alt = "string";
287 else if (streq (type, "opaque"))
289 alt = "bytes";
291 if (streq (type, "string"))
293 print_ifopen (indent, alt);
294 print_ifarg (objname);
296 else
298 if (alt)
300 print_ifopen (indent, alt);
302 else
304 print_ifopen (indent, "array");
306 print_ifarg ("(char **)");
307 if (*objname == '&')
309 f_print (fout, "%s.%s_val, (u_int *) %s.%s_len",
310 objname, name, objname, name);
312 else
314 f_print (fout, "&%s->%s_val, (u_int *) &%s->%s_len",
315 objname, name, objname, name);
318 print_ifarg (amax);
319 if (!alt)
321 print_ifsizeof (indent + 1, prefix, type);
323 break;
324 case REL_ALIAS:
325 print_ifopen (indent, type);
326 print_ifarg (objname);
327 break;
329 print_ifclose (indent);
332 static void
333 emit_enum (definition * def)
335 (void) def;
337 print_ifopen (1, "enum");
338 print_ifarg ("(enum_t *) objp");
339 print_ifclose (1);
342 static void
343 emit_program (const definition * def)
345 decl_list *dl;
346 version_list *vlist;
347 proc_list *plist;
349 for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next)
350 for (plist = vlist->procs; plist != NULL; plist = plist->next)
352 if (!newstyle || plist->arg_num < 2)
353 continue; /* old style, or single argument */
354 print_prog_header (plist);
355 for (dl = plist->args.decls; dl != NULL;
356 dl = dl->next)
357 print_stat (1, &dl->decl);
358 print_trailer ();
362 static void
363 emit_union (const definition * def)
365 declaration *dflt;
366 case_list *cl;
367 declaration *cs;
368 char *object;
369 const char *vecformat = "objp->%s_u.%s";
370 const char *format = "&objp->%s_u.%s";
372 print_stat (1, &def->def.un.enum_decl);
373 f_print (fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name);
374 for (cl = def->def.un.cases; cl != NULL; cl = cl->next)
377 f_print (fout, "\tcase %s:\n", cl->case_name);
378 if (cl->contflag == 1) /* a continued case statement */
379 continue;
380 cs = &cl->case_decl;
381 if (!streq (cs->type, "void"))
383 object = alloc (strlen (def->def_name) + strlen (format) +
384 strlen (cs->name) + 1);
385 if (isvectordef (cs->type, cs->rel))
387 s_print (object, vecformat, def->def_name,
388 cs->name);
390 else
392 s_print (object, format, def->def_name,
393 cs->name);
395 print_ifstat (2, cs->prefix, cs->type, cs->rel, cs->array_max,
396 object, cs->name);
397 free (object);
399 f_print (fout, "\t\tbreak;\n");
401 dflt = def->def.un.default_decl;
402 if (dflt != NULL)
404 if (!streq (dflt->type, "void"))
406 f_print (fout, "\tdefault:\n");
407 object = alloc (strlen (def->def_name) + strlen (format) +
408 strlen (dflt->name) + 1);
409 if (isvectordef (dflt->type, dflt->rel))
411 s_print (object, vecformat, def->def_name,
412 dflt->name);
414 else
416 s_print (object, format, def->def_name,
417 dflt->name);
420 print_ifstat (2, dflt->prefix, dflt->type, dflt->rel,
421 dflt->array_max, object, dflt->name);
422 free (object);
423 f_print (fout, "\t\tbreak;\n");
425 #ifdef __GNU_LIBRARY__
426 else
428 f_print (fout, "\tdefault:\n");
429 f_print (fout, "\t\tbreak;\n");
431 #endif
433 else
435 f_print (fout, "\tdefault:\n");
436 f_print (fout, "\t\treturn FALSE;\n");
439 f_print (fout, "\t}\n");
442 static void
443 inline_struct (definition *def, int flag)
445 decl_list *dl;
446 int i, size;
447 decl_list *cur = NULL;
448 decl_list *psav;
449 bas_type *ptr;
450 char *sizestr;
451 const char *plus;
452 char ptemp[256];
453 int indent = 1;
455 if (flag == PUT)
456 f_print (fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n");
457 else
458 f_print (fout,
459 "\t\treturn TRUE;\n\t} else if (xdrs->x_op == XDR_DECODE) {\n");
461 i = 0;
462 size = 0;
463 sizestr = NULL;
464 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
465 { /* xxx */
466 /* now walk down the list and check for basic types */
467 if ((dl->decl.prefix == NULL) &&
468 ((ptr = find_type (dl->decl.type)) != NULL) &&
469 ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR)))
471 if (i == 0)
472 cur = dl;
473 ++i;
475 if (dl->decl.rel == REL_ALIAS)
476 size += ptr->length;
477 else
479 /* this is required to handle arrays */
480 if (sizestr == NULL)
481 plus = "";
482 else
483 plus = "+ ";
485 if (ptr->length != 1)
486 s_print (ptemp, " %s %s * %d", plus, dl->decl.array_max,
487 ptr->length);
488 else
489 s_print (ptemp, " %s%s ", plus, dl->decl.array_max);
491 /*now concatenate to sizestr !!!! */
492 if (sizestr == NULL)
493 sizestr = strdup (ptemp);
494 else
496 sizestr = realloc (sizestr, strlen (sizestr) +
497 strlen (ptemp) + 1);
498 if (sizestr == NULL)
500 f_print (stderr, "Fatal error : no memory \n");
501 crash ();
503 sizestr = strcat (sizestr, ptemp);
504 /*build up length of array */
508 else
510 if (i > 0)
512 if (sizestr == NULL && size < inlineflag)
514 /* don't expand into inline code if size < inlineflag */
515 while (cur != dl)
517 print_stat (indent + 1, &cur->decl);
518 cur = cur->next;
521 else
523 /* were already looking at a xdr_inlineable structure */
524 tabify (fout, indent + 1);
525 if (sizestr == NULL)
526 f_print (fout, "buf = XDR_INLINE (xdrs, %d * BYTES_PER_XDR_UNIT);", size);
527 else if (size == 0)
528 f_print (fout,
529 "buf = XDR_INLINE (xdrs, (%s) * BYTES_PER_XDR_UNIT);",
530 sizestr);
531 else
532 f_print (fout,
533 "buf = XDR_INLINE (xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);",
534 size, sizestr);
535 f_print (fout, "\n");
536 tabify (fout, indent + 1);
537 fprintf (fout, "if (buf == NULL) {\n");
538 psav = cur;
539 while (cur != dl)
541 print_stat (indent + 2, &cur->decl);
542 cur = cur->next;
545 f_print (fout, "\n\t\t} else {\n");
546 cur = psav;
547 while (cur != dl)
549 emit_inline (indent + 1, &cur->decl, flag);
550 cur = cur->next;
552 tabify (fout, indent + 1);
553 f_print (fout, "}\n");
556 size = 0;
557 i = 0;
558 sizestr = NULL;
559 print_stat (indent + 1, &dl->decl);
562 if (i > 0)
564 if (sizestr == NULL && size < inlineflag)
566 /* don't expand into inline code if size < inlineflag */
567 while (cur != dl)
569 print_stat (indent + 1, &cur->decl);
570 cur = cur->next;
573 else
575 /* were already looking at a xdr_inlineable structure */
576 if (sizestr == NULL)
577 f_print (fout,
578 "\t\tbuf = XDR_INLINE (xdrs, %d * BYTES_PER_XDR_UNIT);",
579 size);
580 else if (size == 0)
581 f_print (fout,
582 "\t\tbuf = XDR_INLINE (xdrs, (%s) * BYTES_PER_XDR_UNIT);",
583 sizestr);
584 else
585 f_print (fout,
586 "\t\tbuf = XDR_INLINE (xdrs, (%d + %s)* BYTES_PER_XDR_UNIT);",
587 size, sizestr);
588 f_print (fout, "\n\t\tif (buf == NULL) {\n");
589 psav = cur;
590 while (cur != NULL)
592 print_stat (indent + 2, &cur->decl);
593 cur = cur->next;
595 f_print (fout, "\t\t} else {\n");
597 cur = psav;
598 while (cur != dl)
600 emit_inline (indent + 2, &cur->decl, flag);
601 cur = cur->next;
603 f_print (fout, "\t\t}\n");
608 /* this may be const. i haven't traced this one through yet. */
610 static void
611 emit_struct (definition * def)
613 decl_list *dl;
614 int j, size, flag;
615 bas_type *ptr;
616 int can_inline;
619 if (inlineflag == 0)
621 /* No xdr_inlining at all */
622 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
623 print_stat (1, &dl->decl);
624 return;
627 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
628 if (dl->decl.rel == REL_VECTOR)
630 f_print (fout, "\tint i;\n");
631 break;
634 size = 0;
635 can_inline = 0;
637 * Make a first pass and see if inling is possible.
639 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
640 if ((dl->decl.prefix == NULL) &&
641 ((ptr = find_type (dl->decl.type)) != NULL) &&
642 ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR)))
644 if (dl->decl.rel == REL_ALIAS)
645 size += ptr->length;
646 else
648 can_inline = 1;
649 break; /* can be inlined */
652 else
654 if (size >= inlineflag)
656 can_inline = 1;
657 break; /* can be inlined */
659 size = 0;
661 if (size > inlineflag)
662 can_inline = 1;
664 if (can_inline == 0)
665 { /* can not inline, drop back to old mode */
666 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
667 print_stat (1, &dl->decl);
668 return;
671 flag = PUT;
672 for (j = 0; j < 2; j++)
674 inline_struct (def, flag);
675 if (flag == PUT)
676 flag = GET;
679 f_print (fout, "\t return TRUE;\n\t}\n\n");
681 /* now take care of XDR_FREE case */
683 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
684 print_stat (1, &dl->decl);
687 static void
688 emit_typedef (const definition * def)
690 const char *prefix = def->def.ty.old_prefix;
691 const char *type = def->def.ty.old_type;
692 const char *amax = def->def.ty.array_max;
693 relation rel = def->def.ty.rel;
695 print_ifstat (1, prefix, type, rel, amax, "objp", def->def_name);
698 static void
699 print_stat (int indent, const declaration * dec)
701 const char *prefix = dec->prefix;
702 const char *type = dec->type;
703 const char *amax = dec->array_max;
704 relation rel = dec->rel;
705 char name[256];
707 if (isvectordef (type, rel))
709 s_print (name, "objp->%s", dec->name);
711 else
713 s_print (name, "&objp->%s", dec->name);
715 print_ifstat (indent, prefix, type, rel, amax, name, dec->name);
719 static void
720 emit_inline (int indent, declaration * decl, int flag)
722 switch (decl->rel)
724 case REL_ALIAS:
725 emit_single_in_line (indent, decl, flag, REL_ALIAS);
726 break;
727 case REL_VECTOR:
728 tabify (fout, indent);
729 f_print (fout, "{\n");
730 tabify (fout, indent + 1);
731 f_print (fout, "register %s *genp;\n\n", decl->type);
732 tabify (fout, indent + 1);
733 f_print (fout,
734 "for (i = 0, genp = objp->%s;\n", decl->name);
735 tabify (fout, indent + 2);
736 f_print (fout, "i < %s; ++i) {\n", decl->array_max);
737 emit_single_in_line (indent + 2, decl, flag, REL_VECTOR);
738 tabify (fout, indent + 1);
739 f_print (fout, "}\n");
740 tabify (fout, indent);
741 f_print (fout, "}\n");
742 break;
743 default:
744 break;
745 /* ?... do nothing I guess */
749 static void
750 emit_single_in_line (int indent, declaration *decl, int flag, relation rel)
752 char *upp_case;
753 int freed = 0;
755 tabify (fout, indent);
756 if (flag == PUT)
757 f_print (fout, "IXDR_PUT_");
758 else
760 if (rel == REL_ALIAS)
761 f_print (fout, "objp->%s = IXDR_GET_", decl->name);
762 else
763 f_print (fout, "*genp++ = IXDR_GET_");
766 upp_case = upcase (decl->type);
768 /* hack - XX */
769 if (!strcmp (upp_case, "INT"))
771 free (upp_case);
772 freed = 1;
773 /* Casting is safe since the `freed' flag is set. */
774 upp_case = (char *) "LONG";
777 if (!strcmp (upp_case, "U_INT"))
779 free (upp_case);
780 freed = 1;
781 /* Casting is safe since the `freed' flag is set. */
782 upp_case = (char *) "U_LONG";
785 if (flag == PUT)
787 if (rel == REL_ALIAS)
788 f_print (fout, "%s(buf, objp->%s);\n", upp_case, decl->name);
789 else
790 f_print (fout, "%s(buf, *genp++);\n", upp_case);
792 else
794 f_print (fout, "%s(buf);\n", upp_case);
797 if (!freed)
798 free (upp_case);
802 static char *
803 upcase (const char *str)
805 char *ptr, *hptr;
806 ptr = malloc (strlen (str) + 1);
807 if (ptr == NULL)
809 f_print (stderr, "malloc failed\n");
810 exit (1);
812 hptr = ptr;
813 while (*str != '\0')
814 *ptr++ = toupper (*str++);
816 *ptr = '\0';
817 return hptr;