/* PSPP - a program for statistical analysis.
- Copyright (C) 1997-9, 2000, 2006, 2009, 2010, 2011, 2012, 2013, 2014, 2016 Free Software Foundation, Inc.
+ Copyright (C) 1997-9, 2000, 2006, 2009, 2010, 2011, 2012, 2013,
+ 2014, 2016, 2020 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
/* A variable. */
struct variable
{
+ int ref_cnt;
/* Dictionary information. */
char *name; /* Variable name. Mixed case. */
int width; /* 0 for numeric, otherwise string width. */
attrset_init (&v->attributes);
ds_init_empty (&v->name_and_label);
+ v->ref_cnt = 1;
+
return v;
}
/* Destroys variable V.
V must not belong to a dictionary. If it does, use
dict_delete_var instead. */
+static void
+var_destroy__ (struct variable *v)
+{
+ assert (!var_has_vardict (v));
+ mv_destroy (&v->miss);
+ var_clear_short_names (v);
+ val_labs_destroy (v->val_labs);
+ var_set_label_quiet (v, NULL);
+ attrset_destroy (var_get_attributes (v));
+ free (v->name);
+ ds_destroy (&v->name_and_label);
+ free (v);
+}
+
+struct variable *
+var_ref (struct variable *v)
+{
+ v->ref_cnt++;
+ return v;
+}
+
void
-var_destroy (struct variable *v)
+var_unref (struct variable *v)
{
- if (v != NULL)
- {
- assert (!var_has_vardict (v));
- mv_destroy (&v->miss);
- var_clear_short_names (v);
- val_labs_destroy (v->val_labs);
- var_set_label_quiet (v, NULL);
- attrset_destroy (var_get_attributes (v));
- free (v->name);
- ds_destroy (&v->name_and_label);
- free (v);
- }
+ if (--v->ref_cnt == 0)
+ var_destroy__ (v);
}
+
+
\f
/* Variable names. */
ov = var_clone (v);
- if (var_has_missing_values (v))
+ if (mv_is_resizable (&v->miss, new_width))
+ mv_resize (&v->miss, new_width);
+ else
{
- if (mv_is_resizable (&v->miss, new_width))
- mv_resize (&v->miss, new_width);
- else
- {
- mv_destroy (&v->miss);
- mv_init (&v->miss, new_width);
- }
- traits |= VAR_TRAIT_MISSING_VALUES;
+ mv_destroy (&v->miss);
+ mv_init (&v->miss, new_width);
}
+ if (new_width != var_get_width (v))
+ traits |= VAR_TRAIT_MISSING_VALUES;
if (v->val_labs != NULL)
{
free (s);
}
-/* Append STR with a string representing VALUE for variable V.
- That is, if VALUE has a label, append that label,
- otherwise format VALUE and append the formatted string.
- STR must be a pointer to an initialised struct string.
-*/
void
-var_append_value_name (const struct variable *v, const union value *value,
- struct string *str)
+var_append_value_name__ (const struct variable *v, const union value *value,
+ enum settings_value_show show, struct string *str)
{
const char *label = var_lookup_value_label (v, value);
- switch (settings_get_show_values ())
+ switch (show)
{
case SETTINGS_VALUE_SHOW_VALUE:
append_value (v, value, str);
break;
}
}
+
+/* Append STR with a string representing VALUE for variable V.
+ That is, if VALUE has a label, append that label,
+ otherwise format VALUE and append the formatted string.
+ STR must be a pointer to an initialised struct string.
+*/
+void
+var_append_value_name (const struct variable *v, const union value *value,
+ struct string *str)
+{
+ var_append_value_name__ (v, value, settings_get_show_values (), str);
+}
\f
/* Print and write formats. */