2 * From: @(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
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13 * provided with the distribution.
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15 * contributors may be used to endorse or promote products derived
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18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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33 * rpc_cout.c, XDR routine outputter for the RPC protocol compiler
38 #include "rpc_parse.h"
42 static void emit_enum (definition * def);
43 static void emit_program (const definition * def);
44 static void emit_union (const definition * def);
45 static void emit_struct (definition * def);
46 static void emit_typedef (const definition * def);
47 static void emit_inline (int indent, declaration * decl, int flag);
48 static void emit_single_in_line (int indent, declaration *decl, int flag,
50 static int findtype (const definition * def, const char *type);
51 static int undefined (const char *type);
52 static void print_generic_header (const char *procname, int pointerp);
53 static void print_ifopen (int indent, const char *name);
54 static void print_ifarg (const char *arg);
55 static void print_ifsizeof (int indent, const char *prefix, const char *type);
56 static void print_ifclose (int indent);
57 static void print_ifstat (int indent, const char *prefix, const char *type,
58 relation rel, const char *amax,
59 const char *objname, const char *name);
60 static void print_stat (int indent, const declaration * dec);
61 static void print_header (const definition * def);
62 static void print_trailer (void);
63 static char *upcase (const char *str);
66 * Emit the C-routine for the given definition
69 emit (definition * def)
71 if (def->def_kind == DEF_CONST)
75 if (def->def_kind == DEF_PROGRAM)
80 if (def->def_kind == DEF_TYPEDEF)
82 /* now we need to handle declarations like
83 struct typedef foo foo;
84 since we don't want this to be expanded
85 into 2 calls to xdr_foo */
87 if (strcmp (def->def.ty.old_type, def->def_name) == 0)
92 switch (def->def_kind)
114 findtype (const definition * def, const char *type)
116 if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST)
122 return (streq (def->def_name, type));
127 undefined (const char *type)
130 def = (definition *) FINDVAL (defined, type, findtype);
131 return (def == NULL);
136 print_generic_header (const char *procname, int pointerp)
138 f_print (fout, "\n");
139 f_print (fout, "bool_t\n");
142 f_print (fout, "xdr_%s (", procname);
143 f_print (fout, "XDR *xdrs, ");
144 f_print (fout, "%s ", procname);
147 f_print (fout, "objp)\n{\n");
151 f_print (fout, "xdr_%s (xdrs, objp)\n", procname);
152 f_print (fout, "\tXDR *xdrs;\n");
153 f_print (fout, "\t%s ", procname);
156 f_print (fout, "objp;\n{\n");
161 print_header (const definition * def)
163 print_generic_header (def->def_name,
164 def->def_kind != DEF_TYPEDEF ||
165 !isvectordef (def->def.ty.old_type,
168 /* Now add Inline support */
172 /*May cause lint to complain. but ... */
173 f_print (fout, "\tregister int32_t *buf;\n\n");
177 print_prog_header (const proc_list * plist)
179 print_generic_header (plist->args.argname, 1);
185 f_print (fout, "\treturn TRUE;\n");
186 f_print (fout, "}\n");
191 print_ifopen (int indent, const char *name)
193 tabify (fout, indent);
194 f_print (fout, " if (!xdr_%s (xdrs", name);
198 print_ifarg (const char *arg)
200 f_print (fout, ", %s", arg);
204 print_ifsizeof (int indent, const char *prefix, const char *type)
208 fprintf (fout, ",\n");
209 tabify (fout, indent);
212 fprintf (fout, ", ");
214 if (streq (type, "bool"))
215 fprintf (fout, "sizeof (bool_t), (xdrproc_t) xdr_bool");
218 fprintf (fout, "sizeof (");
219 if (undefined (type) && prefix)
221 f_print (fout, "%s ", prefix);
223 fprintf (fout, "%s), (xdrproc_t) xdr_%s", type, type);
228 print_ifclose (int indent)
230 f_print (fout, "))\n");
231 tabify (fout, indent);
232 f_print (fout, "\t return FALSE;\n");
236 print_ifstat (int indent, const char *prefix, const char *type, relation rel,
237 const char *amax, const char *objname, const char *name)
239 const char *alt = NULL;
244 print_ifopen (indent, "pointer");
245 print_ifarg ("(char **)");
246 f_print (fout, "%s", objname);
247 print_ifsizeof (0, prefix, type);
250 if (streq (type, "string"))
254 else if (streq (type, "opaque"))
260 print_ifopen (indent, alt);
261 print_ifarg (objname);
265 print_ifopen (indent, "vector");
266 print_ifarg ("(char *)");
267 f_print (fout, "%s", objname);
272 print_ifsizeof (indent + 1, prefix, type);
276 if (streq (type, "string"))
280 else if (streq (type, "opaque"))
284 if (streq (type, "string"))
286 print_ifopen (indent, alt);
287 print_ifarg (objname);
293 print_ifopen (indent, alt);
297 print_ifopen (indent, "array");
299 print_ifarg ("(char **)");
302 f_print (fout, "%s.%s_val, (u_int *) %s.%s_len",
303 objname, name, objname, name);
307 f_print (fout, "&%s->%s_val, (u_int *) &%s->%s_len",
308 objname, name, objname, name);
314 print_ifsizeof (indent + 1, prefix, type);
318 print_ifopen (indent, type);
319 print_ifarg (objname);
322 print_ifclose (indent);
326 emit_enum (definition * def)
330 print_ifopen (1, "enum");
331 print_ifarg ("(enum_t *) objp");
336 emit_program (const definition * def)
342 for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next)
343 for (plist = vlist->procs; plist != NULL; plist = plist->next)
345 if (!newstyle || plist->arg_num < 2)
346 continue; /* old style, or single argument */
347 print_prog_header (plist);
348 for (dl = plist->args.decls; dl != NULL;
350 print_stat (1, &dl->decl);
356 emit_union (const definition * def)
362 const char *vecformat = "objp->%s_u.%s";
363 const char *format = "&objp->%s_u.%s";
365 print_stat (1, &def->def.un.enum_decl);
366 f_print (fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name);
367 for (cl = def->def.un.cases; cl != NULL; cl = cl->next)
370 f_print (fout, "\tcase %s:\n", cl->case_name);
371 if (cl->contflag == 1) /* a continued case statement */
374 if (!streq (cs->type, "void"))
376 object = alloc (strlen (def->def_name) + strlen (format) +
377 strlen (cs->name) + 1);
378 if (isvectordef (cs->type, cs->rel))
380 s_print (object, vecformat, def->def_name,
385 s_print (object, format, def->def_name,
388 print_ifstat (2, cs->prefix, cs->type, cs->rel, cs->array_max,
392 f_print (fout, "\t\tbreak;\n");
394 dflt = def->def.un.default_decl;
397 if (!streq (dflt->type, "void"))
399 f_print (fout, "\tdefault:\n");
400 object = alloc (strlen (def->def_name) + strlen (format) +
401 strlen (dflt->name) + 1);
402 if (isvectordef (dflt->type, dflt->rel))
404 s_print (object, vecformat, def->def_name,
409 s_print (object, format, def->def_name,
413 print_ifstat (2, dflt->prefix, dflt->type, dflt->rel,
414 dflt->array_max, object, dflt->name);
416 f_print (fout, "\t\tbreak;\n");
418 #ifdef __GNU_LIBRARY__
421 f_print (fout, "\tdefault:\n");
422 f_print (fout, "\t\tbreak;\n");
428 f_print (fout, "\tdefault:\n");
429 f_print (fout, "\t\treturn FALSE;\n");
432 f_print (fout, "\t}\n");
436 inline_struct (definition *def, int flag)
440 decl_list *cur = NULL;
449 f_print (fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n");
452 "\t\treturn TRUE;\n\t} else if (xdrs->x_op == XDR_DECODE) {\n");
457 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
459 /* now walk down the list and check for basic types */
460 if ((dl->decl.prefix == NULL) &&
461 ((ptr = find_type (dl->decl.type)) != NULL) &&
462 ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR)))
468 if (dl->decl.rel == REL_ALIAS)
472 /* this is required to handle arrays */
478 if (ptr->length != 1)
479 s_print (ptemp, " %s %s * %d", plus, dl->decl.array_max,
482 s_print (ptemp, " %s%s ", plus, dl->decl.array_max);
484 /*now concatenate to sizestr !!!! */
486 sizestr = strdup (ptemp);
489 sizestr = realloc (sizestr, strlen (sizestr) +
493 f_print (stderr, "Fatal error : no memory \n");
496 sizestr = strcat (sizestr, ptemp);
497 /*build up length of array */
505 if (sizestr == NULL && size < inlineflag)
507 /* don't expand into inline code if size < inlineflag */
510 print_stat (indent + 1, &cur->decl);
516 /* were already looking at a xdr_inlineable structure */
517 tabify (fout, indent + 1);
519 f_print (fout, "buf = XDR_INLINE (xdrs, %d * BYTES_PER_XDR_UNIT);", size);
522 "buf = XDR_INLINE (xdrs, (%s) * BYTES_PER_XDR_UNIT);",
526 "buf = XDR_INLINE (xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);",
528 f_print (fout, "\n");
529 tabify (fout, indent + 1);
530 fprintf (fout, "if (buf == NULL) {\n");
534 print_stat (indent + 2, &cur->decl);
538 f_print (fout, "\n\t\t} else {\n");
542 emit_inline (indent + 1, &cur->decl, flag);
545 tabify (fout, indent + 1);
546 f_print (fout, "}\n");
553 print_stat (indent + 1, &dl->decl);
558 if (sizestr == NULL && size < inlineflag)
560 /* don't expand into inline code if size < inlineflag */
563 print_stat (indent + 1, &cur->decl);
569 /* were already looking at a xdr_inlineable structure */
572 "\t\tbuf = XDR_INLINE (xdrs, %d * BYTES_PER_XDR_UNIT);",
576 "\t\tbuf = XDR_INLINE (xdrs, (%s) * BYTES_PER_XDR_UNIT);",
580 "\t\tbuf = XDR_INLINE (xdrs, (%d + %s)* BYTES_PER_XDR_UNIT);",
582 f_print (fout, "\n\t\tif (buf == NULL) {\n");
586 print_stat (indent + 2, &cur->decl);
589 f_print (fout, "\t\t} else {\n");
594 emit_inline (indent + 2, &cur->decl, flag);
597 f_print (fout, "\t\t}\n");
602 /* this may be const. i haven't traced this one through yet. */
605 emit_struct (definition * def)
615 /* No xdr_inlining at all */
616 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
617 print_stat (1, &dl->decl);
621 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
622 if (dl->decl.rel == REL_VECTOR)
624 f_print (fout, "\tint i;\n");
631 * Make a first pass and see if inling is possible.
633 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
634 if ((dl->decl.prefix == NULL) &&
635 ((ptr = find_type (dl->decl.type)) != NULL) &&
636 ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR)))
638 if (dl->decl.rel == REL_ALIAS)
643 break; /* can be inlined */
648 if (size >= inlineflag)
651 break; /* can be inlined */
655 if (size > inlineflag)
659 { /* can not inline, drop back to old mode */
660 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
661 print_stat (1, &dl->decl);
666 for (j = 0; j < 2; j++)
668 inline_struct (def, flag);
673 f_print (fout, "\t return TRUE;\n\t}\n\n");
675 /* now take care of XDR_FREE case */
677 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
678 print_stat (1, &dl->decl);
682 emit_typedef (const definition * def)
684 const char *prefix = def->def.ty.old_prefix;
685 const char *type = def->def.ty.old_type;
686 const char *amax = def->def.ty.array_max;
687 relation rel = def->def.ty.rel;
689 print_ifstat (1, prefix, type, rel, amax, "objp", def->def_name);
693 print_stat (int indent, const declaration * dec)
695 const char *prefix = dec->prefix;
696 const char *type = dec->type;
697 const char *amax = dec->array_max;
698 relation rel = dec->rel;
701 if (isvectordef (type, rel))
703 s_print (name, "objp->%s", dec->name);
707 s_print (name, "&objp->%s", dec->name);
709 print_ifstat (indent, prefix, type, rel, amax, name, dec->name);
714 emit_inline (int indent, declaration * decl, int flag)
719 emit_single_in_line (indent, decl, flag, REL_ALIAS);
722 tabify (fout, indent);
723 f_print (fout, "{\n");
724 tabify (fout, indent + 1);
725 f_print (fout, "register %s *genp;\n\n", decl->type);
726 tabify (fout, indent + 1);
728 "for (i = 0, genp = objp->%s;\n", decl->name);
729 tabify (fout, indent + 2);
730 f_print (fout, "i < %s; ++i) {\n", decl->array_max);
731 emit_single_in_line (indent + 2, decl, flag, REL_VECTOR);
732 tabify (fout, indent + 1);
733 f_print (fout, "}\n");
734 tabify (fout, indent);
735 f_print (fout, "}\n");
739 /* ?... do nothing I guess */
744 emit_single_in_line (int indent, declaration *decl, int flag, relation rel)
749 tabify (fout, indent);
751 f_print (fout, "IXDR_PUT_");
754 if (rel == REL_ALIAS)
755 f_print (fout, "objp->%s = IXDR_GET_", decl->name);
757 f_print (fout, "*genp++ = IXDR_GET_");
760 upp_case = upcase (decl->type);
763 if (!strcmp (upp_case, "INT"))
767 /* Casting is safe since the `freed' flag is set. */
768 upp_case = (char *) "LONG";
771 if (!strcmp (upp_case, "U_INT"))
775 /* Casting is safe since the `freed' flag is set. */
776 upp_case = (char *) "U_LONG";
781 if (rel == REL_ALIAS)
782 f_print (fout, "%s(buf, objp->%s);\n", upp_case, decl->name);
784 f_print (fout, "%s(buf, *genp++);\n", upp_case);
788 f_print (fout, "%s(buf);\n", upp_case);
797 upcase (const char *str)
800 ptr = malloc (strlen (str) + 1);
803 f_print (stderr, "malloc failed\n");
808 *ptr++ = toupper (*str++);