/* This is a public domain general purpose hash table package

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originally written by Peter Moore @ UCB.

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The hash table data strutures were redesigned and the package was

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rewritten by Vladimir Makarov <vmakarov@redhat.com>. */

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#ifndef RUBY_ST_H

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#define RUBY_ST_H 1

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#if defined(__cplusplus)

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extern "C" {

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#if 0

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} /* satisfy cc-mode */

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#endif

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#endif

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#include "ruby/defines.h"

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RUBY_SYMBOL_EXPORT_BEGIN

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#if SIZEOF_LONG == SIZEOF_VOIDP

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typedef unsigned long st_data_t;

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#elif SIZEOF_LONG_LONG == SIZEOF_VOIDP

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typedef unsigned LONG_LONG st_data_t;

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#else

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# error ---->> st.c requires sizeof(void*) == sizeof(long) or sizeof(LONG_LONG) to be compiled. <<----

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#endif

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#define ST_DATA_T_DEFINED

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#ifndef CHAR_BIT

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# ifdef HAVE_LIMITS_H

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# include <limits.h>

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# else

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# define CHAR_BIT 8

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# endif

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#endif

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#ifndef _

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# define _(args) args

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#endif

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#ifndef ANYARGS

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# ifdef __cplusplus

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# define ANYARGS ...

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# else

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# define ANYARGS

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# endif

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#endif

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typedef struct st_table st_table;

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typedef st_data_t st_index_t;

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/* Maximal value of unsigned integer type st_index_t. */

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#define MAX_ST_INDEX_VAL (~(st_index_t) 0)

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typedef int st_compare_func(st_data_t, st_data_t);

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typedef st_index_t st_hash_func(st_data_t);

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typedef char st_check_for_sizeof_st_index_t[SIZEOF_VOIDP == (int)sizeof(st_index_t) ? 1 : -1];

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#define SIZEOF_ST_INDEX_T SIZEOF_VOIDP

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struct st_hash_type {

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int (*compare)(st_data_t, st_data_t); /* st_compare_func* */

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st_index_t (*hash)(st_data_t); /* st_hash_func* */

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};

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#define ST_INDEX_BITS (SIZEOF_ST_INDEX_T * CHAR_BIT)

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#if defined(HAVE_BUILTIN___BUILTIN_CHOOSE_EXPR) && defined(HAVE_BUILTIN___BUILTIN_TYPES_COMPATIBLE_P)

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# define ST_DATA_COMPATIBLE_P(type) \

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__builtin_choose_expr(__builtin_types_compatible_p(type, st_data_t), 1, 0)

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#else

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# define ST_DATA_COMPATIBLE_P(type) 0

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#endif

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typedef struct st_table_entry st_table_entry;

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struct st_table_entry; /* defined in st.c */

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struct st_table {

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/* Cached features of the table -- see st.c for more details. */

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unsigned char entry_power, bin_power, size_ind;

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/* How many times the table was rebuilt. */

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unsigned int rebuilds_num;

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const struct st_hash_type *type;

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/* Number of entries currently in the table. */

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st_index_t num_entries;

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/* Array of bins used for access by keys. */

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st_index_t *bins;

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/* Start and bound index of entries in array entries.

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entries_starts and entries_bound are in interval

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[0,allocated_entries]. */

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st_index_t entries_start, entries_bound;

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/* Array of size 2^entry_power. */

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st_table_entry *entries;

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};

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#define st_is_member(table,key) st_lookup((table),(key),(st_data_t *)0)

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enum st_retval {ST_CONTINUE, ST_STOP, ST_DELETE, ST_CHECK, ST_REPLACE};

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st_table *rb_st_init_table(const struct st_hash_type *);

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#define st_init_table rb_st_init_table

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st_table *rb_st_init_table_with_size(const struct st_hash_type *, st_index_t);

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#define st_init_table_with_size rb_st_init_table_with_size

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st_table *rb_st_init_numtable(void);

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#define st_init_numtable rb_st_init_numtable

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st_table *rb_st_init_numtable_with_size(st_index_t);

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#define st_init_numtable_with_size rb_st_init_numtable_with_size

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st_table *rb_st_init_strtable(void);

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#define st_init_strtable rb_st_init_strtable

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st_table *rb_st_init_strtable_with_size(st_index_t);

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#define st_init_strtable_with_size rb_st_init_strtable_with_size

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st_table *rb_st_init_strcasetable(void);

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#define st_init_strcasetable rb_st_init_strcasetable

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st_table *rb_st_init_strcasetable_with_size(st_index_t);

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#define st_init_strcasetable_with_size rb_st_init_strcasetable_with_size

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int rb_st_delete(st_table *, st_data_t *, st_data_t *); /* returns 0:notfound 1:deleted */

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#define st_delete rb_st_delete

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int rb_st_delete_safe(st_table *, st_data_t *, st_data_t *, st_data_t);

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#define st_delete_safe rb_st_delete_safe

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int rb_st_shift(st_table *, st_data_t *, st_data_t *); /* returns 0:notfound 1:deleted */

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#define st_shift rb_st_shift

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int rb_st_insert(st_table *, st_data_t, st_data_t);

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#define st_insert rb_st_insert

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int rb_st_insert2(st_table *, st_data_t, st_data_t, st_data_t (*)(st_data_t));

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#define st_insert2 rb_st_insert2

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int rb_st_lookup(st_table *, st_data_t, st_data_t *);

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#define st_lookup rb_st_lookup

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int rb_st_get_key(st_table *, st_data_t, st_data_t *);

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#define st_get_key rb_st_get_key

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typedef int st_update_callback_func(st_data_t *key, st_data_t *value, st_data_t arg, int existing);

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/* *key may be altered, but must equal to the old key, i.e., the

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* results of hash() are same and compare() returns 0, otherwise the

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* behavior is undefined */

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int rb_st_update(st_table *table, st_data_t key, st_update_callback_func *func, st_data_t arg);

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#define st_update rb_st_update

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typedef int st_foreach_callback_func(st_data_t, st_data_t, st_data_t);

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typedef int st_foreach_check_callback_func(st_data_t, st_data_t, st_data_t, int);

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int rb_st_foreach_with_replace(st_table *tab, st_foreach_check_callback_func *func, st_update_callback_func *replace, st_data_t arg);

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#define st_foreach_with_replace rb_st_foreach_with_replace

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int rb_st_foreach(st_table *, st_foreach_callback_func *, st_data_t);

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#define st_foreach rb_st_foreach

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int rb_st_foreach_check(st_table *, st_foreach_check_callback_func *, st_data_t, st_data_t);

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#define st_foreach_check rb_st_foreach_check

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st_index_t rb_st_keys(st_table *table, st_data_t *keys, st_index_t size);

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#define st_keys rb_st_keys

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st_index_t rb_st_keys_check(st_table *table, st_data_t *keys, st_index_t size, st_data_t never);

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#define st_keys_check rb_st_keys_check

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st_index_t rb_st_values(st_table *table, st_data_t *values, st_index_t size);

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#define st_values rb_st_values

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st_index_t rb_st_values_check(st_table *table, st_data_t *values, st_index_t size, st_data_t never);

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#define st_values_check rb_st_values_check

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void rb_st_add_direct(st_table *, st_data_t, st_data_t);

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#define st_add_direct rb_st_add_direct

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void rb_st_free_table(st_table *);

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#define st_free_table rb_st_free_table

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void rb_st_cleanup_safe(st_table *, st_data_t);

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#define st_cleanup_safe rb_st_cleanup_safe

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void rb_st_clear(st_table *);

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#define st_clear rb_st_clear

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st_table *rb_st_copy(st_table *);

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#define st_copy rb_st_copy

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CONSTFUNC(int rb_st_numcmp(st_data_t, st_data_t));

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#define st_numcmp rb_st_numcmp

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CONSTFUNC(st_index_t rb_st_numhash(st_data_t));

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#define st_numhash rb_st_numhash

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PUREFUNC(int rb_st_locale_insensitive_strcasecmp(const char *s1, const char *s2));

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#define st_locale_insensitive_strcasecmp rb_st_locale_insensitive_strcasecmp

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PUREFUNC(int rb_st_locale_insensitive_strncasecmp(const char *s1, const char *s2, size_t n));

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#define st_locale_insensitive_strncasecmp rb_st_locale_insensitive_strncasecmp

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#define st_strcasecmp rb_st_locale_insensitive_strcasecmp

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#define st_strncasecmp rb_st_locale_insensitive_strncasecmp

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PUREFUNC(size_t rb_st_memsize(const st_table *));

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#define st_memsize rb_st_memsize

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PUREFUNC(st_index_t rb_st_hash(const void *ptr, size_t len, st_index_t h));

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#define st_hash rb_st_hash

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CONSTFUNC(st_index_t rb_st_hash_uint32(st_index_t h, uint32_t i));

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#define st_hash_uint32 rb_st_hash_uint32

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CONSTFUNC(st_index_t rb_st_hash_uint(st_index_t h, st_index_t i));

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#define st_hash_uint rb_st_hash_uint

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CONSTFUNC(st_index_t rb_st_hash_end(st_index_t h));

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#define st_hash_end rb_st_hash_end

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CONSTFUNC(st_index_t rb_st_hash_start(st_index_t h));

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#define st_hash_start(h) ((st_index_t)(h))

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void rb_hash_bulk_insert_into_st_table(long, const VALUE *, VALUE);

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RUBY_SYMBOL_EXPORT_END

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#if defined(__cplusplus)

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#if 0

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{ /* satisfy cc-mode */

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#endif

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} /* extern "C" { */

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#endif

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#endif /* RUBY_ST_H */

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