1 /* gen-protos.c - massages a list of prototypes, for use by fixproto.
2 Copyright (C) 1993, 1994, 1995, 1996, 1998,
3 1999 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
27 static void add_hash PARAMS ((const char *));
28 static int parse_fn_proto PARAMS ((char *, char *, struct fn_decl *));
30 #define HASH_SIZE 2503 /* a prime */
31 int hash_tab[HASH_SIZE];
41 /* NOTE: If you edit this, also edit lookup_std_proto in fix-header.c !! */
42 i = hashstr (fname, strlen (fname)) % HASH_SIZE;
49 i = (i+1) % HASH_SIZE;
56 hash_tab[i] = next_index;
61 /* Given a function prototype, fill in the fields of FN.
62 The result is a boolean indicating if a function prototype was found.
64 The input string is modified (trailing NULs are inserted).
65 The fields of FN point to the input string. */
68 parse_fn_proto (start, end, fn)
73 int param_nesting = 1;
74 char *param_start, *param_end, *decl_start, *name_start, *name_end;
77 while (*ptr == ' ' || *ptr == '\t') ptr--;
80 fprintf (stderr, "Funny input line: %s\n", start);
83 while (*ptr == ' ' || *ptr == '\t') ptr--;
86 fprintf (stderr, "Funny input line: %s\n", start);
93 if (c == '(' && --param_nesting == 0)
101 while (*ptr == ' ' || *ptr == '\t') ptr--;
103 if (!ISALNUM ((unsigned char)*ptr))
106 fprintf (stderr, "%s: Can't handle this complex prototype: %s\n",
112 while (ISALNUM ((unsigned char)*ptr) || *ptr == '_') --ptr;
114 while (*ptr == ' ' || *ptr == '\t') ptr--;
120 if (strncmp (decl_start, "typedef ", 8) == 0)
122 if (strncmp (decl_start, "extern ", 7) == 0)
125 fn->fname = name_start;
126 fn->rtype = decl_start;
127 fn->params = param_start;
131 extern int main PARAMS ((int, char **));
135 int argc ATTRIBUTE_UNUSED;
142 struct fn_decl fn_decl;
144 i = strlen (argv[0]);
145 while (i > 0 && argv[0][i-1] != '/') --i;
146 progname = &argv[0][i];
148 INIT_SSTRING (&linebuf);
150 fprintf (outf, "struct fn_decl std_protos[] = {\n");
152 /* A hash table entry of 0 means "unused" so reserve it. */
153 fprintf (outf, " {\"\", \"\", \"\", 0},\n");
158 int c = skip_spaces (inf, ' ');
162 linebuf.ptr = linebuf.base;
164 c = read_upto (inf, &linebuf, '\n');
165 if (linebuf.base[0] == '#') /* skip cpp command */
167 if (linebuf.base[0] == '\0') /* skip empty line */
170 if (! parse_fn_proto (linebuf.base, linebuf.ptr, &fn_decl))
173 add_hash (fn_decl.fname);
175 fprintf (outf, " {\"%s\", \"%s\", \"%s\", 0},\n",
176 fn_decl.fname, fn_decl.rtype, fn_decl.params);
181 fprintf (outf, " {0, 0, 0, 0}\n};\n");
184 fprintf (outf, "#define HASH_SIZE %d\n", HASH_SIZE);
185 fprintf (outf, "short hash_tab[HASH_SIZE] = {\n");
186 for (i = 0; i < HASH_SIZE; i++)
187 fprintf (outf, " %d,\n", hash_tab[i]);
188 fprintf (outf, "};\n");
190 fprintf (stderr, "gen-protos: %d entries %d collisions\n",
191 next_index, collisions);