/* PSPP - a program for statistical analysis.
- Copyright (C) 2004, 2007, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2007, 2009, 2010, 2011 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
#include <stddef.h>
#include <stdbool.h>
#include <stdlib.h>
-#include <libpspp/compiler.h>
-#include <data/caseproto.h>
+
+#include "libpspp/compiler.h"
+#include "libpspp/str.h"
+#include "data/caseproto.h"
struct variable;
struct ccase *case_clone (const struct ccase *) MALLOC_LIKE;
static inline struct ccase *case_unshare (struct ccase *) WARN_UNUSED_RESULT;
-static inline struct ccase *case_ref (const struct ccase *);
+struct ccase *case_ref (const struct ccase *) WARN_UNUSED_RESULT;
static inline void case_unref (struct ccase *);
static inline bool case_is_shared (const struct ccase *);
-static inline size_t case_get_value_cnt (const struct ccase *);
+static inline size_t case_get_n_values (const struct ccase *);
static inline const struct caseproto *case_get_proto (const struct ccase *);
size_t case_get_cost (const struct caseproto *);
double case_num (const struct ccase *, const struct variable *);
double case_num_idx (const struct ccase *, size_t idx);
+double *case_num_rw (struct ccase *, const struct variable *);
+double *case_num_rw_idx (struct ccase *, size_t idx);
const uint8_t *case_str (const struct ccase *, const struct variable *);
const uint8_t *case_str_idx (const struct ccase *, size_t idx);
+struct substring case_ss (const struct ccase *, const struct variable *);
+struct substring case_ss_idx (const struct ccase *, size_t width, size_t idx);
uint8_t *case_str_rw (struct ccase *, const struct variable *);
uint8_t *case_str_rw_idx (struct ccase *, size_t idx);
This function should be used before attempting to modify any
of the data in a case that might be shared, e.g.:
c = case_unshare (c); // Make sure that C is not shared.
- case_data_rw (c, myvar)->f = 1; // Modify data in C.
+ *case_num_rw (c, myvar) = 1; // Modify data in C.
*/
static inline struct ccase *
case_unshare (struct ccase *c)
return c;
}
-/* Increments case C's reference count and returns C. Afterward,
- case C is shared among its reference count holders. */
-static inline struct ccase *
-case_ref (const struct ccase *c_)
-{
- struct ccase *c = CONST_CAST (struct ccase *, c_);
- c->ref_cnt++;
- return c;
-}
-
/* Decrements case C's reference count. Frees C if its
reference count drops to 0.
static inline void
case_unref (struct ccase *c)
{
- if (c != NULL && !--c->ref_cnt)
+ if (c != NULL && --c->ref_cnt == 0)
case_unref__ (c);
}
/* Returns the number of union values in C. */
static inline size_t
-case_get_value_cnt (const struct ccase *c)
+case_get_n_values (const struct ccase *c)
{
return caseproto_get_n_widths (c->proto);
}