/* PSPP - a program for statistical analysis.
- Copyright (C) 1997-9, 2000, 2006, 2009 Free Software Foundation, Inc.
+ Copyright (C) 1997-9, 2000, 2006, 2009, 2010 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
bool leave; /* Leave value from case to case? */
/* Data for use by containing dictionary. */
- struct vardict_info vardict;
+ struct vardict_info *vardict;
/* Used only for system and portable file input and output.
See short-names.h. */
void *aux;
void (*aux_dtor) (struct variable *);
- /* Values of a categorical variable. Procedures need
- vectors with binary entries, so any variable of type ALPHA will
- have its values stored here. */
- struct cat_vals *obs_vals;
-
/* Custom attributes. */
struct attrset attributes;
};
assert (width >= 0 && width <= MAX_STRING);
v = xmalloc (sizeof *v);
- v->vardict.dict_index = v->vardict.case_index = -1;
+ v->vardict = NULL;
var_set_name (v, name);
v->width = width;
mv_init (&v->miss, width);
v->short_name_cnt = 0;
v->aux = NULL;
v->aux_dtor = NULL;
- v->obs_vals = NULL;
attrset_init (&v->attributes);
return v;
- The new variable is not added to OLD_VAR's dictionary by
default. Use dict_clone_var, instead, to do that.
-
- - Auxiliary data and obs_vals are not copied. */
+*/
struct variable *
var_clone (const struct variable *old_var)
{
return new_var;
}
-/* Create a variable of the specified WIDTH to be used for
- internal calculations only. The variable is assigned a unique
- dictionary index and a case index of CASE_IDX. */
-struct variable *
-var_create_internal (int case_idx, int width)
-{
- struct variable *v = var_create ("$internal", width);
- struct vardict_info vdi;
- static int counter = INT_MAX / 2;
-
- vdi.dict = NULL;
- vdi.case_index = case_idx;
- vdi.dict_index = counter++;
- if (counter == INT_MAX)
- counter = INT_MAX / 2;
-
- var_set_vardict (v, &vdi);
-
- return v;
-}
-
/* Destroys variable V.
V must not belong to a dictionary. If it does, use
dict_delete_var instead. */
{
if (v != NULL)
{
- if (var_has_vardict (v))
- {
- const struct vardict_info *vdi = var_get_vardict (v);
- assert (vdi->dict == NULL);
- }
+ assert (!var_has_vardict (v));
mv_destroy (&v->miss);
- cat_stored_values_destroy (v->obs_vals);
var_clear_short_names (v);
var_clear_aux (v);
val_labs_destroy (v->val_labs);
void
var_set_name (struct variable *v, const char *name)
{
- assert (v->vardict.dict_index == -1);
+ assert (!var_has_vardict (v));
assert (var_is_plausible_name (name, false));
str_copy_trunc (v->name, sizeof v->name, name);
bool plausible;
size_t length, i;
- assert (name != NULL);
-
/* Note that strlen returns number of BYTES, not the number of
CHARACTERS */
length = strlen (name);
{
size_t length;
- assert (name != NULL);
-
/* Note that strlen returns number of BYTES, not the number of
CHARACTERS */
length = strlen (name);
struct string *str)
{
const char *name = var_lookup_value_label (v, value);
- const struct dictionary *dict = var_get_vardict (v)->dict;
if (name == NULL)
{
- char *s = data_out (value, dict_get_encoding (dict), &v->print);
+ char *s = data_out (value, var_get_encoding (v), &v->print);
ds_put_cstr (str, s);
free (s);
}
void
var_set_short_name (struct variable *var, size_t idx, const char *short_name)
{
- assert (var != NULL);
assert (short_name == NULL || var_is_plausible_name (short_name, false));
/* Clear old short name numbered IDX, if any. */
size_t
var_get_dict_index (const struct variable *v)
{
- assert (v->vardict.dict_index != -1);
- return v->vardict.dict_index;
+ assert (var_has_vardict (v));
+ return vardict_get_dict_index (v->vardict);
}
/* Returns V's index within the case represented by its
size_t
var_get_case_index (const struct variable *v)
{
- assert (v->vardict.case_index != -1);
- return v->vardict.case_index;
+ assert (var_has_vardict (v));
+ return vardict_get_case_index (v->vardict);
}
\f
/* Returns V's auxiliary data, or a null pointer if none has been
var_attach_aux (const struct variable *v_,
void *aux, void (*aux_dtor) (struct variable *))
{
- struct variable *v = (struct variable *) v_ ; /* cast away const */
+ struct variable *v = CONST_CAST (struct variable *, v_);
assert (v->aux == NULL);
assert (aux != NULL);
v->aux = aux;
void
var_clear_aux (struct variable *v)
{
- assert (v != NULL);
if (v->aux != NULL)
{
if (v->aux_dtor != NULL)
free (v->aux);
}
\f
-/* Observed categorical values. */
-
-/* Returns V's observed categorical values,
- which V must have. */
-struct cat_vals *
-var_get_obs_vals (const struct variable *v)
-{
- assert (v->obs_vals != NULL);
- return v->obs_vals;
-}
-
-/* Sets V's observed categorical values to CAT_VALS.
- V becomes the owner of CAT_VALS. */
-void
-var_set_obs_vals (const struct variable *v_, struct cat_vals *cat_vals)
-{
- struct variable *v = (struct variable *) v_ ; /* cast away const */
- cat_stored_values_destroy (v->obs_vals);
- v->obs_vals = cat_vals;
-}
-
-/* Returns true if V has observed categorical values,
- false otherwise. */
-bool
-var_has_obs_vals (const struct variable *v)
-{
- return v->obs_vals != NULL;
-}
-\f
/* Returns variable V's attribute set. The caller may examine or
modify the attribute set, but must not destroy it. Destroying
V, or calling var_set_attributes() on V, will also destroy its
struct attrset *
var_get_attributes (const struct variable *v)
{
- return (struct attrset *) &v->attributes;
+ return CONST_CAST (struct attrset *, &v->attributes);
}
/* Replaces variable V's attributes set by a copy of ATTRS. */
return attrset_count (&v->attributes) > 0;
}
\f
+/* Returns the encoding of values of variable VAR. (This is actually a
+ property of the dictionary.) Returns null if no specific encoding has been
+ set. */
+const char *
+var_get_encoding (const struct variable *var)
+{
+ return (var_has_vardict (var)
+ ? dict_get_encoding (vardict_get_dictionary (var->vardict))
+ : NULL);
+}
+\f
/* Returns V's vardict structure. */
-const struct vardict_info *
+struct vardict_info *
var_get_vardict (const struct variable *v)
{
- assert (var_has_vardict (v));
- return &v->vardict;
+ return CONST_CAST (struct vardict_info *, v->vardict);
}
/* Sets V's vardict data to VARDICT. */
void
-var_set_vardict (struct variable *v, const struct vardict_info *vardict)
+var_set_vardict (struct variable *v, struct vardict_info *vardict)
{
- assert (vardict->dict_index >= 0);
- assert (vardict->case_index >= 0);
- v->vardict = *vardict;
+ v->vardict = vardict;
}
/* Returns true if V has vardict data. */
bool
var_has_vardict (const struct variable *v)
{
- return v->vardict.dict_index != -1;
+ return v->vardict != NULL;
}
/* Clears V's vardict data. */
void
var_clear_vardict (struct variable *v)
{
- v->vardict.dict_index = v->vardict.case_index = -1;
+ v->vardict = NULL;
}
projects / pspp-builds.git / blobdiff