-/* PSPP - computes sample statistics.
- Copyright (C) 2004 Free Software Foundation, Inc.
- Written by Ben Pfaff <blp@gnu.org>.
+/* PSPP - a program for statistical analysis.
+ Copyright (C) 2004, 2007 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef HEADER_CASE
#define HEADER_CASE
+#include <limits.h>
#include <stddef.h>
#include <stdbool.h>
#include "value.h"
+struct variable;
+
+/* A count of cases or the index of a case within a collection of
+ them. */
+#define CASENUMBER_MAX LONG_MAX
+typedef long int casenumber;
+
/* Opaque structure that represents a case. Use accessor
functions instead of accessing any members directly. Use
case_move() or case_clone() instead of copying. */
-struct ccase
+struct ccase
{
struct case_data *case_data; /* Actual data. */
-#if DEBUGGING
- struct ccase *this; /* Detects unauthorized move/copy. */
-#endif
- };
-
-/* Invisible to user code. */
-struct case_data
- {
- size_t value_cnt; /* Number of values. */
- unsigned ref_cnt; /* Reference count. */
- union value values[1]; /* Values. */
};
-#ifdef DEBUGGING
-#define CASE_INLINE
-#else
-#define CASE_INLINE static
-#endif
-
-CASE_INLINE void case_nullify (struct ccase *);
-CASE_INLINE int case_is_null (const struct ccase *);
+void case_nullify (struct ccase *);
+bool case_is_null (const struct ccase *);
void case_create (struct ccase *, size_t value_cnt);
-CASE_INLINE void case_clone (struct ccase *, const struct ccase *);
-CASE_INLINE void case_move (struct ccase *, struct ccase *);
-CASE_INLINE void case_destroy (struct ccase *);
+void case_clone (struct ccase *, const struct ccase *);
+void case_move (struct ccase *, struct ccase *);
+void case_destroy (struct ccase *);
+
+size_t case_get_value_cnt (const struct ccase *);
-void case_resize (struct ccase *, size_t old_cnt, size_t new_cnt);
+void case_resize (struct ccase *, size_t new_cnt);
void case_swap (struct ccase *, struct ccase *);
-int case_try_create (struct ccase *, size_t value_cnt);
-int case_try_clone (struct ccase *, const struct ccase *);
+bool case_try_create (struct ccase *, size_t value_cnt);
+bool case_try_clone (struct ccase *, const struct ccase *);
-CASE_INLINE void case_copy (struct ccase *dst, size_t dst_idx,
- const struct ccase *src, size_t src_idx,
- size_t cnt);
+void case_copy (struct ccase *dst, size_t dst_idx,
+ const struct ccase *src, size_t src_idx,
+ size_t cnt);
-CASE_INLINE void case_to_values (const struct ccase *, union value *, size_t);
-CASE_INLINE void case_from_values (struct ccase *,
- const union value *, size_t);
+void case_copy_out (const struct ccase *,
+ size_t start_idx, union value *, size_t value_cnt);
+void case_copy_in (struct ccase *,
+ size_t start_idx, const union value *, size_t value_cnt);
-CASE_INLINE const union value *case_data (const struct ccase *, size_t idx);
-CASE_INLINE double case_num (const struct ccase *, size_t idx);
-CASE_INLINE const char *case_str (const struct ccase *, size_t idx);
+const union value *case_data (const struct ccase *, const struct variable *);
+double case_num (const struct ccase *, const struct variable *);
+const char *case_str (const struct ccase *, const struct variable *);
+union value *case_data_rw (struct ccase *, const struct variable *);
-CASE_INLINE union value *case_data_rw (struct ccase *, size_t idx);
+const union value *case_data_idx (const struct ccase *, size_t idx);
+double case_num_idx (const struct ccase *, size_t idx);
+const char *case_str_idx (const struct ccase *, size_t idx);
+union value *case_data_rw_idx (struct ccase *, size_t idx);
-struct variable;
int case_compare (const struct ccase *, const struct ccase *,
- struct variable *const *, size_t var_cnt);
+ const struct variable *const *, size_t var_cnt);
int case_compare_2dict (const struct ccase *, const struct ccase *,
- struct variable *const *, struct variable *const *,
+ const struct variable *const *,
+ const struct variable *const *,
size_t var_cnt);
const union value *case_data_all (const struct ccase *);
union value *case_data_all_rw (struct ccase *);
-void case_unshare (struct ccase *);
-
-#ifndef DEBUGGING
-#include <stdlib.h>
-#include <libpspp/str.h>
-
-static inline void
-case_nullify (struct ccase *c)
-{
- c->case_data = NULL;
-}
-
-static inline int
-case_is_null (const struct ccase *c)
-{
- return c->case_data == NULL;
-}
-
-static inline void
-case_clone (struct ccase *clone, const struct ccase *orig)
-{
- *clone = *orig;
- orig->case_data->ref_cnt++;
-}
-
-static inline void
-case_move (struct ccase *dst, struct ccase *src)
-{
- *dst = *src;
- src->case_data = NULL;
-}
-
-static inline void
-case_destroy (struct ccase *c)
-{
- struct case_data *cd = c->case_data;
- if (cd != NULL && --cd->ref_cnt == 0)
- free (cd);
-}
-
-static inline void
-case_copy (struct ccase *dst, size_t dst_idx,
- const struct ccase *src, size_t src_idx,
- size_t value_cnt)
-{
- if (dst->case_data->ref_cnt > 1)
- case_unshare (dst);
- if (dst->case_data != src->case_data || dst_idx != src_idx)
- memmove (dst->case_data->values + dst_idx,
- src->case_data->values + src_idx,
- sizeof *dst->case_data->values * value_cnt);
-}
-
-static inline void
-case_to_values (const struct ccase *c, union value *output,
- size_t output_size )
-{
- memcpy (output, c->case_data->values,
- output_size * sizeof *output);
-}
-
-static inline void
-case_from_values (struct ccase *c, const union value *input,
- size_t input_size UNUSED)
-{
- if (c->case_data->ref_cnt > 1)
- case_unshare (c);
- memcpy (c->case_data->values, input,
- c->case_data->value_cnt * sizeof *input);
-}
-
-static inline const union value *
-case_data (const struct ccase *c, size_t idx)
-{
- return &c->case_data->values[idx];
-}
-
-static inline double
-case_num (const struct ccase *c, size_t idx)
-{
- return c->case_data->values[idx].f;
-}
-
-static inline const char *
-case_str (const struct ccase *c, size_t idx)
-{
- return c->case_data->values[idx].s;
-}
-
-static inline union value *
-case_data_rw (struct ccase *c, size_t idx)
-{
- if (c->case_data->ref_cnt > 1)
- case_unshare (c);
- return &c->case_data->values[idx];
-}
-#endif /* !DEBUGGING */
-
#endif /* case.h */
projects / pspp-builds.git / blobdiff