-/* Ident --- unique handles for identifiers
- Copyright (C) 1995, 1996 Markus Armbruster
- All rights reserved. */
+/*
+ * Project: libFIRM
+ * File name: ir/common/ident.c
+ * Purpose: Hash table to store names.
+ * Author: Goetz Lindenmaier
+ * Modified by:
+ * Created:
+ * CVS-ID: $Id$
+ * Copyright: (c) 1999-2003 Universität Karlsruhe
+ * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+ */
#ifdef HAVE_CONFIG_H
# include <config.h>
#include <assert.h>
#include <ctype.h>
#include <string.h>
-#include "array.h"
-#include "tune.h"
-#include "ident.h"
-#include "xprintf.h"
+#include <stddef.h>
+#include <stdlib.h>
+
+#include "ident_t.h"
+#include "set.h"
+
+/** The current ident module implementation. */
+static ident_if_t impl;
+
+/**
+ * Stores a string in the ident module and returns a handle for the string.
+ *
+ * @param handle the handle for the set
+ * @param str the string which shall be stored
+ *
+ * @return id - a handle for the generated ident
+ *
+ * Default implementation using libfirm sets.
+ */
+static ident *set_new_id_from_chars(void *handle, const char *str, int len)
+{
+ set *id_set = handle;
-#define XX_USER(name) ident *id_##name;
-#define XX_INTERNAL(name, str) XX_USER(name)
-#undef XX_USER
-#undef XX_INTERNAL
+ assert(len > 0);
+ return (ident *)set_hinsert0(id_set, str, len, ID_HASH(str, len));
+}
-set *id_set;
+/**
+ * Stores a string in the ident module and returns a handle for the string.
+ *
+ * @param handle the handle for the set
+ * @param str the string (or whatever) which shall be stored
+ * @param len the length of the data in bytes
+ *
+ * Default implementation using libfirm sets.
+ */
+static ident *set_new_id_from_str(void *handle, const char *str)
+{
+ assert(str);
+ return (ident *)set_new_id_from_chars(handle, str, strlen(str));
+}
+/**
+ * Returns a string represented by an ident.
+ *
+ * @param handle the handle for the set
+ * @param id the ident
+ *
+ * Default implementation using libfirm sets.
+ */
+static const char *set_get_id_str(void *handle, ident *id)
+{
+ struct set_entry *entry = (struct set_entry *)id;
-ident *
-new_id_derived (const char *pfx, ident *id)
+ return (const char *)entry->dptr;
+}
+
+/**
+ * Returns the length of the string represented by an ident.
+ *
+ * @param handle the handle for the set
+ * @param id the ident
+ *
+ * Default implementation using libfirm sets.
+ */
+static int set_get_id_strlen(void *handle, ident *id)
{
- int pfx_len = strlen (pfx);
- int len = pfx_len + ID_TO_STRLEN (id);
- char *str = alloca (len);
+ struct set_entry *entry = (struct set_entry *)id;
- 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));
+ return entry->size;
}
+/**
+ * Default implementation using libfirm sets.
+ */
+void set_finish_ident(void *handle) {
+ set *id_set = handle;
-ident *
-new_id_internal (void)
-{
- static char str[] = "_0000000";
- int i;
+ del_set(id_set);
+}
- 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'));
+/**
+ * Default implementation if no new_id_from_str() is provided.
+ */
+static ident *def_new_id_from_str(void *handle, const char *str)
+{
+ return impl.new_id_from_chars(handle, str, strlen(str));
+}
- return ID_FROM_STR (str, sizeof (str) - 1);
+/**
+ * Default implementation if no get_id_strlen() is provided.
+ */
+static int def_get_id_strlen(void *handle, ident *id)
+{
+ return strlen(impl.get_id_str(handle, id));
}
+/* Initialize the ident module. */
+void init_ident(ident_if_t *id_if, int initial_n_idents)
+{
+ if (id_if) {
+ memcpy(&impl, id_if, sizeof(impl));
+
+ if (! impl.new_id_from_str)
+ impl.new_id_from_str = def_new_id_from_str;
+ if (! impl.get_id_strlen)
+ impl.get_id_strlen = def_get_id_strlen;
+ }
+ else {
+ impl.new_id_from_str = set_new_id_from_str;
+ impl.new_id_from_chars = set_new_id_from_chars;
+ impl.get_id_str = set_get_id_str;
+ impl.get_id_strlen = set_get_id_strlen;
+ impl.finish_ident = set_finish_ident;
+
+ impl.handle = new_set(memcmp, initial_n_idents);
+ }
+}
-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);
+ return impl.new_id_from_str(impl.handle, str);
}
+ident *new_id_from_chars(const char *str, int len)
+{
+ assert(len > 0);
+ return impl.new_id_from_chars(impl.handle, str, len);
+}
-#ifndef NDEBUG
+const char *get_id_str(ident *id)
+{
+ return impl.get_id_str(impl.handle, id);
+}
-void
-ids_vrfy (ident **id)
+int get_id_strlen(ident *id)
{
- int i;
+ return impl.get_id_strlen(impl.handle, id);
+}
- for (i = 0; i < ARR_LEN (id); ++i) {
- ID_VRFY (id[i]);
- }
+void finish_ident(void) {
+ if (impl.finish_ident)
+ impl.finish_ident(impl.handle);
}
-#endif
+int id_is_prefix(ident *prefix, ident *id)
+{
+ if (get_id_strlen(prefix) > get_id_strlen(id)) return 0;
+ return 0 == memcmp(get_id_str(prefix), get_id_str(id), get_id_strlen(prefix));
+}
-int
-ident_print (XP_PAR1, const xprintf_info *info ATTRIBUTE((unused)), XP_PARN)
+int id_is_suffix(ident *suffix, ident *id)
{
- ident *id = XP_GETARG (ident *, 0);
- return XPMR (ID_TO_STR (id), ID_TO_STRLEN (id));
+ int suflen = get_id_strlen(suffix);
+ int idlen = get_id_strlen(id);
+ const char *part;
+
+ if (suflen > idlen) return 0;
+
+ part = get_id_str(id);
+ part = part + (idlen - suflen);
+
+ return 0 == memcmp(get_id_str(suffix), part, suflen);
}
+int id_contains_char(ident *id, char c)
+{
+ return strchr(get_id_str(id), c) != NULL;
+}
-void
-id_init (void)
+int print_id (ident *id)
{
- id_set = new_set (memcmp, TUNE_NIDENTS);
+ return printf("%s", get_id_str(id));
+}
-#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
+int fprint_id (FILE *F, ident *id)
+{
+ return fprintf(F, "%s", get_id_str(id));
}
projects / libfirm / blobdiff