1 /* Ident --- unique handles for identifiers
2 Copyright (C) 1995, 1996 Markus Armbruster
3 All rights reserved. */
22 /* Caution: strings _not_ zero-terminated! */
23 #define ID_FROM_STR(str, len) \
24 (assert ((len) > 0), \
25 (const set_entry *)set_hinsert (id_set, (str), (len), ID_HASH ((str), (len))))
26 #define ID_TO_STR(id) ((const char *)&(id)->dptr[0])
27 #define ID_TO_STRLEN(id) ((id)->size)
28 #define ID_TO_HASH(id) ((long)(id) + (id)->hash)
30 /* Vormals Debugunterstuetzung, entfernt (debug.h). */
31 # define ID_VRFY(id) ((void)0)
32 # define IDS_VRFY(id) ((void)0)
35 # define id_stats() set_stats (id_set)
37 # define id_stats() ((void)0)
42 #define XX_USER(name) ident *id_##name;
43 #define XX_INTERNAL(name, str) XX_USER(name)
49 #if 0 /* nowhere used */
51 new_id_derived (const char *pfx, ident *id)
53 int pfx_len = strlen (pfx);
54 int len = pfx_len + ID_TO_STRLEN (id);
55 char *str = alloca (len);
57 memcpy (str, pfx, pfx_len);
58 memcpy (str+pfx_len, ID_TO_STR (id), ID_TO_STRLEN (id));
59 return ID_FROM_STR (str, pfx_len + ID_TO_STRLEN (id));
63 new_id_internal (void)
65 static char str[] = "_0000000";
69 while (++str[i] == '9'+1) {
71 /* if following assertion fails, we get called far too often ;-) */
74 assert (('0' <= str[i]) && (str[i] <= '9'));
76 return ID_FROM_STR (str, sizeof (str) - 1);
81 id_is_internal (ident *id)
83 assert (ID_TO_STRLEN (id));
84 return !!ispunct (ID_TO_STR(id)[0]);
90 ident_print (XP_PAR1, const xprintf_info *info ATTRIBUTE((unused)), XP_PARN)
92 ident *id = XP_GETARG (ident *, 0);
93 return XPMR (ID_TO_STR (id), ID_TO_STRLEN (id));
100 id_set = new_set (memcmp, TUNE_NIDENTS);
102 #define XX_USER(name) id_##name = ID_FROM_STR(#name, sizeof(#name)- 1);
103 #define XX_INTERNAL(name, str) id_##name = ID_FROM_STR((str), sizeof((str))-1);
109 INLINE ident *id_from_str (const char *str, int len)
112 return (ident *)set_hinsert(id_set, str, len, ID_HASH(str, len));
115 INLINE const char *id_to_str (ident *id) {
116 return (const char *)id->dptr;
119 INLINE int id_to_strlen(ident *id) {
123 int id_is_prefix (ident *prefix, ident *id) {
124 if (id_to_strlen(prefix) > id_to_strlen(id)) return 0;
125 return 0 == memcmp(prefix->dptr, id->dptr, id_to_strlen(prefix));
128 int id_is_suffix (ident *suffix, ident *id) {
129 int suflen = id_to_strlen(suffix);
130 int idlen = id_to_strlen(id);
133 if (suflen > idlen) return 0;
135 part = (char *)id->dptr;
136 part = part + (idlen - suflen);
138 return 0 == memcmp(suffix->dptr, part, suflen);
141 int print_id (ident *id) {
142 return xprintf("%I", id);
145 int fprint_id (FILE *F, ident *id) {
146 return xfprintf(F, "%I", id);