2 * From: @(#)rpc_cout.c 1.13 89/02/22
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34 * rpc_cout.c, XDR routine outputter for the RPC protocol compiler
39 #include "rpc_parse.h"
43 static void emit_enum (definition * def);
44 static void emit_program (const definition * def);
45 static void emit_union (const definition * def);
46 static void emit_struct (definition * def);
47 static void emit_typedef (const definition * def);
48 static void emit_inline (int indent, declaration * decl, int flag);
49 static void emit_single_in_line (int indent, declaration *decl, int flag,
51 static int findtype (const definition * def, const char *type);
52 static int undefined (const char *type);
53 static void print_generic_header (const char *procname, int pointerp);
54 static void print_ifopen (int indent, const char *name);
55 static void print_ifarg (const char *arg);
56 static void print_ifsizeof (int indent, const char *prefix, const char *type);
57 static void print_ifclose (int indent);
58 static void print_ifstat (int indent, const char *prefix, const char *type,
59 relation rel, const char *amax,
60 const char *objname, const char *name);
61 static void print_stat (int indent, const declaration * dec);
62 static void print_header (const definition * def);
63 static void print_trailer (void);
64 static char *upcase (const char *str);
67 * Emit the C-routine for the given definition
70 emit (definition * def)
72 if (def->def_kind == DEF_CONST)
76 if (def->def_kind == DEF_PROGRAM)
81 if (def->def_kind == DEF_TYPEDEF)
83 /* now we need to handle declarations like
84 struct typedef foo foo;
85 since we don't want this to be expanded
86 into 2 calls to xdr_foo */
88 if (strcmp (def->def.ty.old_type, def->def_name) == 0)
93 switch (def->def_kind)
115 findtype (const definition * def, const char *type)
117 if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST)
123 return (streq (def->def_name, type));
128 undefined (const char *type)
131 def = (definition *) FINDVAL (defined, type, findtype);
132 return (def == NULL);
137 print_generic_header (const char *procname, int pointerp)
139 f_print (fout, "\n");
140 f_print (fout, "bool_t\n");
143 f_print (fout, "xdr_%s (", procname);
144 f_print (fout, "XDR *xdrs, ");
145 f_print (fout, "%s ", procname);
148 f_print (fout, "objp)\n{\n");
152 f_print (fout, "xdr_%s (xdrs, objp)\n", procname);
153 f_print (fout, "\tXDR *xdrs;\n");
154 f_print (fout, "\t%s ", procname);
157 f_print (fout, "objp;\n{\n");
162 print_header (const definition * def)
164 print_generic_header (def->def_name,
165 def->def_kind != DEF_TYPEDEF ||
166 !isvectordef (def->def.ty.old_type,
169 /* Now add Inline support */
173 /*May cause lint to complain. but ... */
174 f_print (fout, "\tregister int32_t *buf;\n\n");
178 print_prog_header (const proc_list * plist)
180 print_generic_header (plist->args.argname, 1);
186 f_print (fout, "\treturn TRUE;\n");
187 f_print (fout, "}\n");
192 print_ifopen (int indent, const char *name)
194 tabify (fout, indent);
195 f_print (fout, " if (!xdr_%s (xdrs", name);
199 print_ifarg (const char *arg)
201 f_print (fout, ", %s", arg);
205 print_ifsizeof (int indent, const char *prefix, const char *type)
209 fprintf (fout, ",\n");
210 tabify (fout, indent);
213 fprintf (fout, ", ");
215 if (streq (type, "bool"))
216 fprintf (fout, "sizeof (bool_t), (xdrproc_t) xdr_bool");
219 fprintf (fout, "sizeof (");
220 if (undefined (type) && prefix)
222 f_print (fout, "%s ", prefix);
224 fprintf (fout, "%s), (xdrproc_t) xdr_%s", type, type);
229 print_ifclose (int indent)
231 f_print (fout, "))\n");
232 tabify (fout, indent);
233 f_print (fout, "\t return FALSE;\n");
237 print_ifstat (int indent, const char *prefix, const char *type, relation rel,
238 const char *amax, const char *objname, const char *name)
240 const char *alt = NULL;
245 print_ifopen (indent, "pointer");
246 print_ifarg ("(char **)");
247 f_print (fout, "%s", objname);
248 print_ifsizeof (0, prefix, type);
251 if (streq (type, "string"))
255 else if (streq (type, "opaque"))
261 print_ifopen (indent, alt);
262 print_ifarg (objname);
266 print_ifopen (indent, "vector");
267 print_ifarg ("(char *)");
268 f_print (fout, "%s", objname);
273 print_ifsizeof (indent + 1, prefix, type);
277 if (streq (type, "string"))
281 else if (streq (type, "opaque"))
285 if (streq (type, "string"))
287 print_ifopen (indent, alt);
288 print_ifarg (objname);
294 print_ifopen (indent, alt);
298 print_ifopen (indent, "array");
300 print_ifarg ("(char **)");
303 f_print (fout, "%s.%s_val, (u_int *) %s.%s_len",
304 objname, name, objname, name);
308 f_print (fout, "&%s->%s_val, (u_int *) &%s->%s_len",
309 objname, name, objname, name);
315 print_ifsizeof (indent + 1, prefix, type);
319 print_ifopen (indent, type);
320 print_ifarg (objname);
323 print_ifclose (indent);
327 emit_enum (definition * def)
331 print_ifopen (1, "enum");
332 print_ifarg ("(enum_t *) objp");
337 emit_program (const definition * def)
343 for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next)
344 for (plist = vlist->procs; plist != NULL; plist = plist->next)
346 if (!newstyle || plist->arg_num < 2)
347 continue; /* old style, or single argument */
348 print_prog_header (plist);
349 for (dl = plist->args.decls; dl != NULL;
351 print_stat (1, &dl->decl);
357 emit_union (const definition * def)
363 const char *vecformat = "objp->%s_u.%s";
364 const char *format = "&objp->%s_u.%s";
366 print_stat (1, &def->def.un.enum_decl);
367 f_print (fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name);
368 for (cl = def->def.un.cases; cl != NULL; cl = cl->next)
371 f_print (fout, "\tcase %s:\n", cl->case_name);
372 if (cl->contflag == 1) /* a continued case statement */
375 if (!streq (cs->type, "void"))
377 object = alloc (strlen (def->def_name) + strlen (format) +
378 strlen (cs->name) + 1);
379 if (isvectordef (cs->type, cs->rel))
381 s_print (object, vecformat, def->def_name,
386 s_print (object, format, def->def_name,
389 print_ifstat (2, cs->prefix, cs->type, cs->rel, cs->array_max,
393 f_print (fout, "\t\tbreak;\n");
395 dflt = def->def.un.default_decl;
398 if (!streq (dflt->type, "void"))
400 f_print (fout, "\tdefault:\n");
401 object = alloc (strlen (def->def_name) + strlen (format) +
402 strlen (dflt->name) + 1);
403 if (isvectordef (dflt->type, dflt->rel))
405 s_print (object, vecformat, def->def_name,
410 s_print (object, format, def->def_name,
414 print_ifstat (2, dflt->prefix, dflt->type, dflt->rel,
415 dflt->array_max, object, dflt->name);
417 f_print (fout, "\t\tbreak;\n");
421 f_print (fout, "\tdefault:\n");
422 f_print (fout, "\t\tbreak;\n");
427 f_print (fout, "\tdefault:\n");
428 f_print (fout, "\t\treturn FALSE;\n");
431 f_print (fout, "\t}\n");
435 inline_struct (definition *def, int flag)
439 decl_list *cur = NULL;
448 f_print (fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n");
451 "\t\treturn TRUE;\n\t} else if (xdrs->x_op == XDR_DECODE) {\n");
456 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
458 /* now walk down the list and check for basic types */
459 if ((dl->decl.prefix == NULL) &&
460 ((ptr = find_type (dl->decl.type)) != NULL) &&
461 ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR)))
467 if (dl->decl.rel == REL_ALIAS)
471 /* this is required to handle arrays */
477 if (ptr->length != 1)
478 s_print (ptemp, " %s %s * %d", plus, dl->decl.array_max,
481 s_print (ptemp, " %s%s ", plus, dl->decl.array_max);
483 /*now concatenate to sizestr !!!! */
485 sizestr = strdup (ptemp);
488 sizestr = realloc (sizestr, strlen (sizestr) +
492 f_print (stderr, "Fatal error : no memory \n");
495 sizestr = strcat (sizestr, ptemp);
496 /*build up length of array */
504 if (sizestr == NULL && size < inlineflag)
506 /* don't expand into inline code if size < inlineflag */
509 print_stat (indent + 1, &cur->decl);
515 /* were already looking at a xdr_inlineable structure */
516 tabify (fout, indent + 1);
518 f_print (fout, "buf = XDR_INLINE (xdrs, %d * BYTES_PER_XDR_UNIT);", size);
521 "buf = XDR_INLINE (xdrs, (%s) * BYTES_PER_XDR_UNIT);",
525 "buf = XDR_INLINE (xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);",
527 f_print (fout, "\n");
528 tabify (fout, indent + 1);
529 fprintf (fout, "if (buf == NULL) {\n");
533 print_stat (indent + 2, &cur->decl);
537 f_print (fout, "\n\t\t} else {\n");
541 emit_inline (indent + 1, &cur->decl, flag);
544 tabify (fout, indent + 1);
545 f_print (fout, "}\n");
552 print_stat (indent + 1, &dl->decl);
557 if (sizestr == NULL && size < inlineflag)
559 /* don't expand into inline code if size < inlineflag */
562 print_stat (indent + 1, &cur->decl);
568 /* were already looking at a xdr_inlineable structure */
571 "\t\tbuf = XDR_INLINE (xdrs, %d * BYTES_PER_XDR_UNIT);",
575 "\t\tbuf = XDR_INLINE (xdrs, (%s) * BYTES_PER_XDR_UNIT);",
579 "\t\tbuf = XDR_INLINE (xdrs, (%d + %s)* BYTES_PER_XDR_UNIT);",
581 f_print (fout, "\n\t\tif (buf == NULL) {\n");
585 print_stat (indent + 2, &cur->decl);
588 f_print (fout, "\t\t} else {\n");
593 emit_inline (indent + 2, &cur->decl, flag);
596 f_print (fout, "\t\t}\n");
601 /* this may be const. i haven't traced this one through yet. */
604 emit_struct (definition * def)
614 /* No xdr_inlining at all */
615 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
616 print_stat (1, &dl->decl);
620 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
621 if (dl->decl.rel == REL_VECTOR)
623 f_print (fout, "\tint i;\n");
630 * Make a first pass and see if inling is possible.
632 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
633 if ((dl->decl.prefix == NULL) &&
634 ((ptr = find_type (dl->decl.type)) != NULL) &&
635 ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR)))
637 if (dl->decl.rel == REL_ALIAS)
642 break; /* can be inlined */
647 if (size >= inlineflag)
650 break; /* can be inlined */
654 if (size > inlineflag)
658 { /* can not inline, drop back to old mode */
659 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
660 print_stat (1, &dl->decl);
665 for (j = 0; j < 2; j++)
667 inline_struct (def, flag);
672 f_print (fout, "\t return TRUE;\n\t}\n\n");
674 /* now take care of XDR_FREE case */
676 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
677 print_stat (1, &dl->decl);
681 emit_typedef (const definition * def)
683 const char *prefix = def->def.ty.old_prefix;
684 const char *type = def->def.ty.old_type;
685 const char *amax = def->def.ty.array_max;
686 relation rel = def->def.ty.rel;
688 print_ifstat (1, prefix, type, rel, amax, "objp", def->def_name);
692 print_stat (int indent, const declaration * dec)
694 const char *prefix = dec->prefix;
695 const char *type = dec->type;
696 const char *amax = dec->array_max;
697 relation rel = dec->rel;
700 if (isvectordef (type, rel))
702 s_print (name, "objp->%s", dec->name);
706 s_print (name, "&objp->%s", dec->name);
708 print_ifstat (indent, prefix, type, rel, amax, name, dec->name);
713 emit_inline (int indent, declaration * decl, int flag)
718 emit_single_in_line (indent, decl, flag, REL_ALIAS);
721 tabify (fout, indent);
722 f_print (fout, "{\n");
723 tabify (fout, indent + 1);
724 f_print (fout, "register %s *genp;\n\n", decl->type);
725 tabify (fout, indent + 1);
727 "for (i = 0, genp = objp->%s;\n", decl->name);
728 tabify (fout, indent + 2);
729 f_print (fout, "i < %s; ++i) {\n", decl->array_max);
730 emit_single_in_line (indent + 2, decl, flag, REL_VECTOR);
731 tabify (fout, indent + 1);
732 f_print (fout, "}\n");
733 tabify (fout, indent);
734 f_print (fout, "}\n");
738 /* ?... do nothing I guess */
743 emit_single_in_line (int indent, declaration *decl, int flag, relation rel)
748 tabify (fout, indent);
750 f_print (fout, "IXDR_PUT_");
753 if (rel == REL_ALIAS)
754 f_print (fout, "objp->%s = IXDR_GET_", decl->name);
756 f_print (fout, "*genp++ = IXDR_GET_");
759 upp_case = upcase (decl->type);
762 if (!strcmp (upp_case, "INT"))
766 /* Casting is safe since the `freed' flag is set. */
767 upp_case = (char *) "LONG";
770 if (!strcmp (upp_case, "U_INT"))
774 /* Casting is safe since the `freed' flag is set. */
775 upp_case = (char *) "U_LONG";
780 if (rel == REL_ALIAS)
781 f_print (fout, "%s(buf, objp->%s);\n", upp_case, decl->name);
783 f_print (fout, "%s(buf, *genp++);\n", upp_case);
787 f_print (fout, "%s(buf);\n", upp_case);
796 upcase (const char *str)
799 ptr = malloc (strlen (str) + 1);
802 f_print (stderr, "malloc failed\n");
807 *ptr++ = toupper (*str++);