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/* This is a public domain general purpose hash table package written by Peter Moore @ UCB. */
/* @(#) st.h 5.1 89/12/14 */
#ifndef RUBY_ST_H
#define RUBY_ST_H 1
#if defined(__cplusplus)
extern "C" {
#if 0
} /* satisfy cc-mode */
#endif
#endif
#include "ruby/defines.h"
#if defined STDC_HEADERS
#include <stddef.h>
#elif defined HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif
#ifdef HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#if defined __GNUC__ && __GNUC__ >= 4
#pragma GCC visibility push(default)
#endif
#if SIZEOF_LONG == SIZEOF_VOIDP
typedef unsigned long st_data_t;
#elif SIZEOF_LONG_LONG == SIZEOF_VOIDP
typedef unsigned LONG_LONG st_data_t;
#else
# error ---->> st.c requires sizeof(void*) == sizeof(long) to be compiled. <<----
#endif
#define ST_DATA_T_DEFINED
#ifndef CHAR_BIT
# ifdef HAVE_LIMITS_H
# include <limits.h>
# else
# define CHAR_BIT 8
# endif
#endif
#ifndef _
# define _(args) args
#endif
#ifndef ANYARGS
# ifdef __cplusplus
# define ANYARGS ...
# else
# define ANYARGS
# endif
#endif
typedef struct st_table st_table;
typedef st_data_t st_index_t;
typedef int st_compare_func(st_data_t, st_data_t);
typedef st_index_t st_hash_func(st_data_t);
typedef char st_check_for_sizeof_st_index_t[SIZEOF_VOIDP == (int)sizeof(st_index_t) ? 1 : -1];
#define SIZEOF_ST_INDEX_T SIZEOF_VOIDP
struct st_hash_type {
int (*compare)(ANYARGS /*st_data_t, st_data_t*/); /* st_compare_func* */
st_index_t (*hash)(ANYARGS /*st_data_t*/); /* st_hash_func* */
};
#define ST_INDEX_BITS (sizeof(st_index_t) * CHAR_BIT)
struct st_table {
const struct st_hash_type *type;
st_index_t num_bins;
unsigned int entries_packed : 1;
#ifdef __GNUC__
/*
* C spec says,
* A bit-field shall have a type that is a qualified or unqualified
* version of _Bool, signed int, unsigned int, or some other
* implementation-defined type. It is implementation-defined whether
* atomic types are permitted.
* In short, long and long long bit-field are implementation-defined
* feature. Therefore we want to supress a warning explicitly.
*/
__extension__
#endif
st_index_t num_entries : ST_INDEX_BITS - 1;
struct st_table_entry **bins;
struct st_table_entry *head, *tail;
};
#define st_is_member(table,key) st_lookup(table,key,(st_data_t *)0)
enum st_retval {ST_CONTINUE, ST_STOP, ST_DELETE, ST_CHECK};
st_table *st_init_table(const struct st_hash_type *);
st_table *st_init_table_with_size(const struct st_hash_type *, st_index_t);
st_table *st_init_numtable(void);
st_table *st_init_numtable_with_size(st_index_t);
st_table *st_init_strtable(void);
st_table *st_init_strtable_with_size(st_index_t);
st_table *st_init_strcasetable(void);
st_table *st_init_strcasetable_with_size(st_index_t);
int st_delete(st_table *, st_data_t *, st_data_t *); /* returns 0:notfound 1:deleted */
int st_delete_safe(st_table *, st_data_t *, st_data_t *, st_data_t);
int st_insert(st_table *, st_data_t, st_data_t);
int st_insert2(st_table *, st_data_t, st_data_t, st_data_t (*)(st_data_t));
int st_lookup(st_table *, st_data_t, st_data_t *);
int st_get_key(st_table *, st_data_t, st_data_t *);
int st_foreach(st_table *, int (*)(ANYARGS), st_data_t);
int st_reverse_foreach(st_table *, int (*)(ANYARGS), st_data_t);
void st_add_direct(st_table *, st_data_t, st_data_t);
void st_free_table(st_table *);
void st_cleanup_safe(st_table *, st_data_t);
void st_clear(st_table *);
st_table *st_copy(st_table *);
int st_numcmp(st_data_t, st_data_t);
st_index_t st_numhash(st_data_t);
int st_strcasecmp(const char *s1, const char *s2);
int st_strncasecmp(const char *s1, const char *s2, size_t n);
size_t st_memsize(const st_table *);
st_index_t st_hash(const void *ptr, size_t len, st_index_t h);
st_index_t st_hash_uint32(st_index_t h, uint32_t i);
st_index_t st_hash_uint(st_index_t h, st_index_t i);
st_index_t st_hash_end(st_index_t h);
st_index_t st_hash_start(st_index_t h);
#define st_hash_start(h) ((st_index_t)(h))
#if defined __GNUC__ && __GNUC__ >= 4
#pragma GCC visibility pop
#endif
#if defined(__cplusplus)
#if 0
{ /* satisfy cc-mode */
#endif
} /* extern "C" { */
#endif
#endif /* RUBY_ST_H */
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