-/* Ident --- unique handles for identifiers
- Copyright (C) 1995, 1996 Markus Armbruster
- All rights reserved. */
-
-/* $Id$ */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+/*
+ * This file is part of libFirm.
+ * Copyright (C) 2012 University of Karlsruhe.
+ */
+
+/**
+ * @file
+ * @brief Hash table to store names.
+ * @author Goetz Lindenmaier
+ */
+#include "config.h"
#include <assert.h>
#include <ctype.h>
+#include <stdio.h>
#include <string.h>
#include <stddef.h>
+#include <stdlib.h>
#include "ident_t.h"
-#include "array.h"
-#include "tune.h"
-#include "misc.h"
#include "set.h"
-
-/* Caution: strings _not_ zero-terminated! */
-#define ID_FROM_STR(str, len) \
- (assert ((len) > 0), \
- (const set_entry *)set_hinsert (id_set, (str), (len), ID_HASH ((str), (len))))
-#define ID_TO_STR(id) ((const char *)&(id)->dptr[0])
-#define ID_TO_STRLEN(id) ((id)->size)
-#define ID_TO_HASH(id) ((long)(id) + (id)->hash)
-
-/* Vormals Debugunterstuetzung, entfernt (debug.h). */
-# define ID_VRFY(id) ((void)0)
-
-#ifdef NDEBUG
-# define IDS_VRFY(id) ((void)0)
-#else
-# define IDS_VRFY(id) ids_vrfy ((id))
-static void ids_vrfy (ident **id);
-#endif
-
-#ifdef STATS
-# define id_stats() set_stats (id_set)
-#else
-# define id_stats() ((void)0)
-#endif
-
-extern set *id_set;
-
-#define XX_USER(name) ident *id_##name;
-#define XX_INTERNAL(name, str) XX_USER(name)
-#undef XX_USER
-#undef XX_INTERNAL
+#include "xmalloc.h"
+#include "hashptr.h"
static set *id_set;
-#if 0 /* nowhere used */
-static ident *
-new_id_derived (const char *pfx, ident *id)
+void init_ident(void)
{
- int pfx_len = strlen (pfx);
- int len = pfx_len + ID_TO_STRLEN (id);
- char *str = alloca (len);
-
- memcpy (str, pfx, pfx_len);
- memcpy (str+pfx_len, ID_TO_STR (id), ID_TO_STRLEN (id));
- return ID_FROM_STR (str, pfx_len + ID_TO_STRLEN (id));
+ /* it's ok to use memcmp here, we check only strings */
+ id_set = new_set(memcmp, 128);
}
-
-static ident *
-new_id_internal (void)
+ident *new_id_from_chars(const char *str, size_t len)
{
- static char str[] = "_0000000";
- int i;
-
- i = sizeof (str) - 2;
- while (++str[i] == '9'+1) {
- str[i--] = '0';
- /* if following assertion fails, we get called far too often ;-) */
- assert (i >= 0);
- }
- assert (('0' <= str[i]) && (str[i] <= '9'));
-
- return ID_FROM_STR (str, sizeof (str) - 1);
+ unsigned hash = hash_data((const unsigned char*)str, len);
+ ident *result = (ident*) set_hinsert0(id_set, str, len, hash);
+ return result;
}
-
-static bool
-id_is_internal (ident *id)
+ident *new_id_from_str(const char *str)
{
- assert (ID_TO_STRLEN (id));
- return !!ispunct (ID_TO_STR(id)[0]);
+ assert(str != NULL);
+ return new_id_from_chars(str, strlen(str));
}
-#endif
-
-#ifndef NDEBUG
-static void
-ids_vrfy (ident **id)
+const char *get_id_str(ident *id)
{
- int i;
-
- for (i = 0; i < ARR_LEN (id); ++i) {
- ID_VRFY (id[i]);
- }
+ struct set_entry *entry = (struct set_entry*) id;
+ return (const char*) entry->dptr;
}
-#endif
-
-int
-ident_print (XP_PAR1, const xprintf_info *info ATTRIBUTE((unused)), XP_PARN)
+size_t get_id_strlen(ident *id)
{
- ident *id = XP_GETARG (ident *, 0);
- return XPMR (ID_TO_STR (id), ID_TO_STRLEN (id));
+ struct set_entry *entry = (struct set_entry*) id;
+ return entry->size;
}
-
-void
-id_init (void)
+void finish_ident(void)
{
- id_set = new_set (memcmp, TUNE_NIDENTS);
-
-#define XX_USER(name) id_##name = ID_FROM_STR(#name, sizeof(#name)- 1);
-#define XX_INTERNAL(name, str) id_##name = ID_FROM_STR((str), sizeof((str))-1);
-#undef XX_USER
-#undef XX_INTERNAL
+ del_set(id_set);
+ id_set = NULL;
}
-
-INLINE ident *id_from_str (const char *str, int len) {
- assert (len > 0);
- return (const set_entry *) set_hinsert (id_set,
- (str),
- (len),
- ID_HASH ((str), (len)));
+int id_is_prefix(ident *prefix, ident *id)
+{
+ size_t prefix_len = get_id_strlen(prefix);
+ if (prefix_len > get_id_strlen(id))
+ return 0;
+ return 0 == memcmp(get_id_str(prefix), get_id_str(id), prefix_len);
}
-INLINE const char *id_to_str (ident *id) {
- return ((const char *)&(id)->dptr[0]);
-}
+int id_is_suffix(ident *suffix, ident *id)
+{
+ size_t suflen = get_id_strlen(suffix);
+ size_t idlen = get_id_strlen(id);
+ const char *part;
-INLINE int id_to_strlen(ident *id) {
- return ((id)->size);
-}
+ if (suflen > idlen)
+ return 0;
-int id_is_prefix (ident *prefix, ident *id) {
- if (id_to_strlen(prefix) > id_to_strlen(id)) return 0;
- if (0 == memcmp(&(prefix->dptr[0]), &(id->dptr[0]), id_to_strlen(prefix)))
- return 1;
- return 0;
-}
+ part = get_id_str(id);
+ part = part + (idlen - suflen);
-int id_is_suffix (ident *suffix, ident *id) {
- int suflen = id_to_strlen(suffix);
- int idlen = id_to_strlen(id);
- char *part;
- if (suflen > idlen) return 0;
-
- part = (char *) &id->dptr[0];
- part = part + (idlen - suflen);
- if (0 == memcmp(&(suffix->dptr[0]), part, suflen))
- return 1;
- return 0;
+ return 0 == memcmp(get_id_str(suffix), part, suflen);
}
-int print_id (ident *id) {
- xprintf("%I", id);
- return(0);
+int id_contains_char(ident *id, char c)
+{
+ return strchr(get_id_str(id), c) != NULL;
}
-int fprint_id (FILE *F, ident *id) {
- xfprintf(F, "%I", id);
- return(0);
+ident *id_unique(const char *tag)
+{
+ static unsigned unique_id = 0;
+ char buf[256];
+
+ snprintf(buf, sizeof(buf), tag, unique_id);
+ unique_id++;
+ return new_id_from_str(buf);
}
projects / libfirm / blobdiff