1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 1997-9, 2000, 2006, 2009, 2010 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include <data/attributes.h>
23 #include <data/category.h>
24 #include <data/data-out.h>
25 #include <data/format.h>
26 #include <data/dictionary.h>
27 #include <data/identifier.h>
28 #include <data/missing-values.h>
29 #include <data/value-labels.h>
30 #include <data/vardict.h>
32 #include <libpspp/misc.h>
33 #include <libpspp/assertion.h>
34 #include <libpspp/compiler.h>
35 #include <libpspp/hash.h>
36 #include <libpspp/message.h>
37 #include <libpspp/str.h>
43 #define _(msgid) gettext (msgid)
48 /* Dictionary information. */
49 char name[VAR_NAME_LEN + 1]; /* Variable name. Mixed case. */
50 int width; /* 0 for numeric, otherwise string width. */
51 struct missing_values miss; /* Missing values. */
52 struct fmt_spec print; /* Default format for PRINT. */
53 struct fmt_spec write; /* Default format for WRITE. */
54 struct val_labs *val_labs; /* Value labels. */
55 char *label; /* Variable label. */
57 /* GUI information. */
58 enum measure measure; /* Nominal, ordinal, or continuous. */
59 int display_width; /* Width of data editor column. */
60 enum alignment alignment; /* Alignment of data in GUI. */
62 /* Case information. */
63 bool leave; /* Leave value from case to case? */
65 /* Data for use by containing dictionary. */
66 struct vardict_info *vardict;
68 /* Used only for system and portable file input and output.
71 size_t short_name_cnt;
73 /* Each command may use these fields as needed. */
75 void (*aux_dtor) (struct variable *);
77 /* Values of a categorical variable. Procedures need
78 vectors with binary entries, so any variable of type ALPHA will
79 have its values stored here. */
80 struct cat_vals *obs_vals;
82 /* Custom attributes. */
83 struct attrset attributes;
86 /* Creates and returns a new variable with the given NAME and
87 WIDTH and other fields initialized to default values. The
88 variable is not added to a dictionary; for that, use
89 dict_create_var instead. */
91 var_create (const char *name, int width)
96 assert (width >= 0 && width <= MAX_STRING);
98 v = xmalloc (sizeof *v);
100 var_set_name (v, name);
102 mv_init (&v->miss, width);
103 v->leave = var_must_leave (v);
104 type = val_type_from_width (width);
105 v->alignment = var_default_alignment (type);
106 v->measure = var_default_measure (type);
107 v->display_width = var_default_display_width (width);
108 v->print = v->write = var_default_formats (width);
111 v->short_names = NULL;
112 v->short_name_cnt = 0;
116 attrset_init (&v->attributes);
121 /* Creates and returns a clone of OLD_VAR. Most properties of
122 the new variable are copied from OLD_VAR, except:
124 - The variable's short name is not copied, because there is
125 no reason to give a new variable with potentially a new
126 name the same short name.
128 - The new variable is not added to OLD_VAR's dictionary by
129 default. Use dict_clone_var, instead, to do that.
131 - Auxiliary data and obs_vals are not copied. */
133 var_clone (const struct variable *old_var)
135 struct variable *new_var = var_create (var_get_name (old_var),
136 var_get_width (old_var));
138 var_set_missing_values (new_var, var_get_missing_values (old_var));
139 var_set_print_format (new_var, var_get_print_format (old_var));
140 var_set_write_format (new_var, var_get_write_format (old_var));
141 var_set_value_labels (new_var, var_get_value_labels (old_var));
142 var_set_label (new_var, var_get_label (old_var));
143 var_set_measure (new_var, var_get_measure (old_var));
144 var_set_display_width (new_var, var_get_display_width (old_var));
145 var_set_alignment (new_var, var_get_alignment (old_var));
146 var_set_leave (new_var, var_get_leave (old_var));
147 var_set_attributes (new_var, var_get_attributes (old_var));
152 /* Destroys variable V.
153 V must not belong to a dictionary. If it does, use
154 dict_delete_var instead. */
156 var_destroy (struct variable *v)
160 assert (!var_has_vardict (v));
161 mv_destroy (&v->miss);
162 cat_stored_values_destroy (v->obs_vals);
163 var_clear_short_names (v);
165 val_labs_destroy (v->val_labs);
171 /* Variable names. */
173 /* Return variable V's name. */
175 var_get_name (const struct variable *v)
180 /* Sets V's name to NAME.
181 Do not use this function for a variable in a dictionary. Use
182 dict_rename_var instead. */
184 var_set_name (struct variable *v, const char *name)
186 assert (!var_has_vardict (v));
187 assert (var_is_plausible_name (name, false));
189 str_copy_trunc (v->name, sizeof v->name, name);
190 dict_var_changed (v);
193 /* Returns true if NAME is an acceptable name for a variable,
194 false otherwise. If ISSUE_ERROR is true, issues an
195 explanatory error message on failure. */
197 var_is_valid_name (const char *name, bool issue_error)
202 /* Note that strlen returns number of BYTES, not the number of
204 length = strlen (name);
206 plausible = var_is_plausible_name(name, issue_error);
212 if (!lex_is_id1 (name[0]))
215 msg (SE, _("Character `%c' (in %s) may not appear "
216 "as the first character in a variable name."),
222 for (i = 0; i < length; i++)
224 if (!lex_is_idn (name[i]))
227 msg (SE, _("Character `%c' (in %s) may not appear in "
237 /* Returns true if NAME is an plausible name for a variable,
238 false otherwise. If ISSUE_ERROR is true, issues an
239 explanatory error message on failure.
240 This function makes no use of LC_CTYPE.
243 var_is_plausible_name (const char *name, bool issue_error)
247 /* Note that strlen returns number of BYTES, not the number of
249 length = strlen (name);
253 msg (SE, _("Variable name cannot be empty string."));
256 else if (length > VAR_NAME_LEN)
259 msg (SE, _("Variable name %s exceeds %d-character limit."),
260 name, (int) VAR_NAME_LEN);
264 if (lex_id_to_token (ss_cstr (name)) != T_ID)
267 msg (SE, _("`%s' may not be used as a variable name because it "
268 "is a reserved word."), name);
275 /* Returns VAR's dictionary class. */
277 var_get_dict_class (const struct variable *var)
279 return dict_class_from_id (var->name);
282 /* A hsh_compare_func that orders variables A and B by their
285 compare_vars_by_name (const void *a_, const void *b_, const void *aux UNUSED)
287 const struct variable *a = a_;
288 const struct variable *b = b_;
290 return strcasecmp (a->name, b->name);
293 /* A hsh_hash_func that hashes variable V based on its name. */
295 hash_var_by_name (const void *v_, const void *aux UNUSED)
297 const struct variable *v = v_;
299 return hash_case_string (v->name, 0);
302 /* A hsh_compare_func that orders pointers to variables A and B
305 compare_var_ptrs_by_name (const void *a_, const void *b_,
306 const void *aux UNUSED)
308 struct variable *const *a = a_;
309 struct variable *const *b = b_;
311 return strcasecmp (var_get_name (*a), var_get_name (*b));
314 /* A hsh_compare_func that orders pointers to variables A and B
315 by their dictionary indexes. */
317 compare_var_ptrs_by_dict_index (const void *a_, const void *b_,
318 const void *aux UNUSED)
320 struct variable *const *a = a_;
321 struct variable *const *b = b_;
322 size_t a_index = var_get_dict_index (*a);
323 size_t b_index = var_get_dict_index (*b);
325 return a_index < b_index ? -1 : a_index > b_index;
328 /* A hsh_hash_func that hashes pointer to variable V based on its
331 hash_var_ptr_by_name (const void *v_, const void *aux UNUSED)
333 struct variable *const *v = v_;
335 return hash_case_string (var_get_name (*v), 0);
338 /* Returns the type of variable V. */
340 var_get_type (const struct variable *v)
342 return val_type_from_width (v->width);
345 /* Returns the width of variable V. */
347 var_get_width (const struct variable *v)
352 /* Changes the width of V to NEW_WIDTH.
353 This function should be used cautiously. */
355 var_set_width (struct variable *v, int new_width)
357 const int old_width = v->width;
359 if (old_width == new_width)
362 if (mv_is_resizable (&v->miss, new_width))
363 mv_resize (&v->miss, new_width);
366 mv_destroy (&v->miss);
367 mv_init (&v->miss, new_width);
370 if (v->val_labs != NULL)
372 if (val_labs_can_set_width (v->val_labs, new_width))
373 val_labs_set_width (v->val_labs, new_width);
376 val_labs_destroy (v->val_labs);
381 fmt_resize (&v->print, new_width);
382 fmt_resize (&v->write, new_width);
384 v->width = new_width;
385 dict_var_resized (v, old_width);
386 dict_var_changed (v);
389 /* Returns true if variable V is numeric, false otherwise. */
391 var_is_numeric (const struct variable *v)
393 return var_get_type (v) == VAL_NUMERIC;
396 /* Returns true if variable V is a string variable, false
399 var_is_alpha (const struct variable *v)
401 return var_get_type (v) == VAL_STRING;
404 /* Returns variable V's missing values. */
405 const struct missing_values *
406 var_get_missing_values (const struct variable *v)
411 /* Sets variable V's missing values to MISS, which must be of V's
412 width or at least resizable to V's width.
413 If MISS is null, then V's missing values, if any, are
416 var_set_missing_values (struct variable *v, const struct missing_values *miss)
420 assert (mv_is_resizable (miss, v->width));
421 mv_destroy (&v->miss);
422 mv_copy (&v->miss, miss);
423 mv_resize (&v->miss, v->width);
428 dict_var_changed (v);
431 /* Sets variable V to have no user-missing values. */
433 var_clear_missing_values (struct variable *v)
435 var_set_missing_values (v, NULL);
438 /* Returns true if V has any user-missing values,
441 var_has_missing_values (const struct variable *v)
443 return !mv_is_empty (&v->miss);
446 /* Returns true if VALUE is in the given CLASS of missing values
447 in V, false otherwise. */
449 var_is_value_missing (const struct variable *v, const union value *value,
452 return mv_is_value_missing (&v->miss, value, class);
455 /* Returns true if D is in the given CLASS of missing values in
457 V must be a numeric variable. */
459 var_is_num_missing (const struct variable *v, double d, enum mv_class class)
461 return mv_is_num_missing (&v->miss, d, class);
464 /* Returns true if S[] is a missing value for V, false otherwise.
465 S[] must contain exactly as many characters as V's width.
466 V must be a string variable. */
468 var_is_str_missing (const struct variable *v, const uint8_t s[],
471 return mv_is_str_missing (&v->miss, s, class);
474 /* Returns variable V's value labels,
475 possibly a null pointer if it has none. */
476 const struct val_labs *
477 var_get_value_labels (const struct variable *v)
482 /* Returns true if variable V has at least one value label. */
484 var_has_value_labels (const struct variable *v)
486 return val_labs_count (v->val_labs) > 0;
489 /* Sets variable V's value labels to a copy of VLS,
490 which must have a width equal to V's width or one that can be
491 changed to V's width.
492 If VLS is null, then V's value labels, if any, are removed. */
494 var_set_value_labels (struct variable *v, const struct val_labs *vls)
496 val_labs_destroy (v->val_labs);
501 assert (val_labs_can_set_width (vls, v->width));
502 v->val_labs = val_labs_clone (vls);
503 val_labs_set_width (v->val_labs, v->width);
504 dict_var_changed (v);
508 /* Makes sure that V has a set of value labels,
509 by assigning one to it if necessary. */
511 alloc_value_labels (struct variable *v)
513 if (v->val_labs == NULL)
514 v->val_labs = val_labs_create (v->width);
517 /* Attempts to add a value label with the given VALUE and LABEL
518 to V. Returns true if successful, false if VALUE has an
519 existing label or if V is a long string variable. */
521 var_add_value_label (struct variable *v,
522 const union value *value, const char *label)
524 alloc_value_labels (v);
525 return val_labs_add (v->val_labs, value, label);
528 /* Adds or replaces a value label with the given VALUE and LABEL
530 Has no effect if V is a long string variable. */
532 var_replace_value_label (struct variable *v,
533 const union value *value, const char *label)
535 alloc_value_labels (v);
536 val_labs_replace (v->val_labs, value, label);
539 /* Removes V's value labels, if any. */
541 var_clear_value_labels (struct variable *v)
543 var_set_value_labels (v, NULL);
546 /* Returns the label associated with VALUE for variable V,
547 or a null pointer if none. */
549 var_lookup_value_label (const struct variable *v, const union value *value)
551 return val_labs_find (v->val_labs, value);
554 /* Append STR with a string representing VALUE for variable V.
555 That is, if VALUE has a label, append that label,
556 otherwise format VALUE and append the formatted string.
557 STR must be a pointer to an initialised struct string.
560 var_append_value_name (const struct variable *v, const union value *value,
563 const char *name = var_lookup_value_label (v, value);
566 char *s = data_out (value, var_get_encoding (v), &v->print);
567 ds_put_cstr (str, s);
571 ds_put_cstr (str, name);
574 /* Print and write formats. */
576 /* Returns V's print format specification. */
577 const struct fmt_spec *
578 var_get_print_format (const struct variable *v)
583 /* Sets V's print format specification to PRINT, which must be a
584 valid format specification for a variable of V's width
585 (ordinarily an output format, but input formats are not
588 var_set_print_format (struct variable *v, const struct fmt_spec *print)
590 assert (fmt_check_width_compat (print, v->width));
592 dict_var_changed (v);
595 /* Returns V's write format specification. */
596 const struct fmt_spec *
597 var_get_write_format (const struct variable *v)
602 /* Sets V's write format specification to WRITE, which must be a
603 valid format specification for a variable of V's width
604 (ordinarily an output format, but input formats are not
607 var_set_write_format (struct variable *v, const struct fmt_spec *write)
609 assert (fmt_check_width_compat (write, v->width));
611 dict_var_changed (v);
614 /* Sets V's print and write format specifications to FORMAT,
615 which must be a valid format specification for a variable of
616 V's width (ordinarily an output format, but input formats are
619 var_set_both_formats (struct variable *v, const struct fmt_spec *format)
621 var_set_print_format (v, format);
622 var_set_write_format (v, format);
625 /* Returns the default print and write format for a variable of
626 the given TYPE, as set by var_create. The return value can be
627 used to reset a variable's print and write formats to the
630 var_default_formats (int width)
633 ? fmt_for_output (FMT_F, 8, 2)
634 : fmt_for_output (FMT_A, width, 0));
637 /* Return a string representing this variable, in the form most
638 appropriate from a human factors perspective, that is, its
639 variable label if it has one, otherwise its name. */
641 var_to_string (const struct variable *v)
643 return v->label != NULL ? v->label : v->name;
646 /* Returns V's variable label, or a null pointer if it has none. */
648 var_get_label (const struct variable *v)
653 /* Sets V's variable label to LABEL, stripping off leading and
654 trailing white space and truncating to 255 characters.
655 If LABEL is a null pointer or if LABEL is an empty string
656 (after stripping white space), then V's variable label (if
659 var_set_label (struct variable *v, const char *label)
666 struct substring s = ss_cstr (label);
667 ss_trim (&s, ss_cstr (CC_SPACES));
668 ss_truncate (&s, 255);
669 if (!ss_is_empty (s))
670 v->label = ss_xstrdup (s);
672 dict_var_changed (v);
675 /* Removes any variable label from V. */
677 var_clear_label (struct variable *v)
679 var_set_label (v, NULL);
682 /* Returns true if V has a variable V,
685 var_has_label (const struct variable *v)
687 return v->label != NULL;
690 /* Returns true if M is a valid variable measurement level,
693 measure_is_valid (enum measure m)
695 return m == MEASURE_NOMINAL || m == MEASURE_ORDINAL || m == MEASURE_SCALE;
698 /* Returns V's measurement level. */
700 var_get_measure (const struct variable *v)
705 /* Sets V's measurement level to MEASURE. */
707 var_set_measure (struct variable *v, enum measure measure)
709 assert (measure_is_valid (measure));
710 v->measure = measure;
711 dict_var_changed (v);
714 /* Returns the default measurement level for a variable of the
715 given TYPE, as set by var_create. The return value can be
716 used to reset a variable's measurement level to the
719 var_default_measure (enum val_type type)
721 return type == VAL_NUMERIC ? MEASURE_SCALE : MEASURE_NOMINAL;
724 /* Returns V's display width, which applies only to GUIs. */
726 var_get_display_width (const struct variable *v)
728 return v->display_width;
731 /* Sets V's display width to DISPLAY_WIDTH. */
733 var_set_display_width (struct variable *v, int new_width)
735 int old_width = v->display_width;
737 v->display_width = new_width;
739 if ( old_width != new_width)
740 dict_var_display_width_changed (v);
742 dict_var_changed (v);
745 /* Returns the default display width for a variable of the given
746 WIDTH, as set by var_create. The return value can be used to
747 reset a variable's display width to the default. */
749 var_default_display_width (int width)
751 return width == 0 ? 8 : MIN (width, 32);
754 /* Returns true if A is a valid alignment,
757 alignment_is_valid (enum alignment a)
759 return a == ALIGN_LEFT || a == ALIGN_RIGHT || a == ALIGN_CENTRE;
762 /* Returns V's display alignment, which applies only to GUIs. */
764 var_get_alignment (const struct variable *v)
769 /* Sets V's display alignment to ALIGNMENT. */
771 var_set_alignment (struct variable *v, enum alignment alignment)
773 assert (alignment_is_valid (alignment));
774 v->alignment = alignment;
775 dict_var_changed (v);
778 /* Returns the default display alignment for a variable of the
779 given TYPE, as set by var_create. The return value can be
780 used to reset a variable's display alignment to the default. */
782 var_default_alignment (enum val_type type)
784 return type == VAL_NUMERIC ? ALIGN_RIGHT : ALIGN_LEFT;
787 /* Whether variables' values should be preserved from case to
790 /* Returns true if variable V's value should be left from case to
791 case, instead of being reset to system-missing or blanks. */
793 var_get_leave (const struct variable *v)
798 /* Sets V's leave setting to LEAVE. */
800 var_set_leave (struct variable *v, bool leave)
802 assert (leave || !var_must_leave (v));
804 dict_var_changed (v);
807 /* Returns true if V must be left from case to case,
808 false if it can be set either way. */
810 var_must_leave (const struct variable *v)
812 return var_get_dict_class (v) == DC_SCRATCH;
815 /* Returns the number of short names stored in VAR.
817 Short names are used only for system and portable file input
818 and output. They are upper-case only, not necessarily unique,
819 and limited to SHORT_NAME_LEN characters (plus a null
820 terminator). Ordinarily a variable has at most one short
821 name, but very long string variables (longer than 255 bytes)
822 may have more. A variable might not have any short name at
823 all if it hasn't been saved to or read from a system or
826 var_get_short_name_cnt (const struct variable *var)
828 return var->short_name_cnt;
831 /* Returns VAR's short name with the given IDX, if it has one
832 with that index, or a null pointer otherwise. Short names may
833 be sparse: even if IDX is less than the number of short names
834 in VAR, this function may return a null pointer. */
836 var_get_short_name (const struct variable *var, size_t idx)
838 return idx < var->short_name_cnt ? var->short_names[idx] : NULL;
841 /* Sets VAR's short name with the given IDX to SHORT_NAME,
842 truncating it to SHORT_NAME_LEN characters and converting it
843 to uppercase in the process. Specifying a null pointer for
844 SHORT_NAME clears the specified short name. */
846 var_set_short_name (struct variable *var, size_t idx, const char *short_name)
848 assert (short_name == NULL || var_is_plausible_name (short_name, false));
850 /* Clear old short name numbered IDX, if any. */
851 if (idx < var->short_name_cnt)
853 free (var->short_names[idx]);
854 var->short_names[idx] = NULL;
857 /* Install new short name for IDX. */
858 if (short_name != NULL)
860 if (idx >= var->short_name_cnt)
862 size_t old_cnt = var->short_name_cnt;
864 var->short_name_cnt = MAX (idx * 2, 1);
865 var->short_names = xnrealloc (var->short_names, var->short_name_cnt,
866 sizeof *var->short_names);
867 for (i = old_cnt; i < var->short_name_cnt; i++)
868 var->short_names[i] = NULL;
870 var->short_names[idx] = xstrndup (short_name, MAX_SHORT_STRING);
871 str_uppercase (var->short_names[idx]);
874 dict_var_changed (var);
877 /* Clears V's short names. */
879 var_clear_short_names (struct variable *v)
883 for (i = 0; i < v->short_name_cnt; i++)
884 free (v->short_names[i]);
885 free (v->short_names);
886 v->short_names = NULL;
887 v->short_name_cnt = 0;
890 /* Relationship with dictionary. */
892 /* Returns V's index within its dictionary, the value
893 for which "dict_get_var (dict, index)" will return V.
894 V must be in a dictionary. */
896 var_get_dict_index (const struct variable *v)
898 assert (var_has_vardict (v));
899 return vardict_get_dict_index (v->vardict);
902 /* Returns V's index within the case represented by its
903 dictionary, that is, the value for which "case_data_idx (case,
904 index)" will return the data for V in that case.
905 V must be in a dictionary. */
907 var_get_case_index (const struct variable *v)
909 assert (var_has_vardict (v));
910 return vardict_get_case_index (v->vardict);
913 /* Returns V's auxiliary data, or a null pointer if none has been
916 var_get_aux (const struct variable *v)
921 /* Assign auxiliary data AUX to variable V, which must not
922 already have auxiliary data. Before V's auxiliary data is
923 cleared, AUX_DTOR(V) will be called. (var_dtor_free, below,
924 may be appropriate for use as AUX_DTOR.) */
926 var_attach_aux (const struct variable *v_,
927 void *aux, void (*aux_dtor) (struct variable *))
929 struct variable *v = CONST_CAST (struct variable *, v_);
930 assert (v->aux == NULL);
931 assert (aux != NULL);
933 v->aux_dtor = aux_dtor;
937 /* Remove auxiliary data, if any, from V, and return it, without
938 calling any associated destructor. */
940 var_detach_aux (struct variable *v)
943 assert (aux != NULL);
948 /* Clears auxiliary data, if any, from V, and calls any
949 associated destructor. */
951 var_clear_aux (struct variable *v)
955 if (v->aux_dtor != NULL)
961 /* This function is appropriate for use an auxiliary data
962 destructor (passed as AUX_DTOR to var_attach_aux()) for the
963 case where the auxiliary data should be passed to free(). */
965 var_dtor_free (struct variable *v)
970 /* Observed categorical values. */
972 /* Returns V's observed categorical values,
973 which V must have. */
975 var_get_obs_vals (const struct variable *v)
977 assert (v->obs_vals != NULL);
981 /* Sets V's observed categorical values to CAT_VALS.
982 V becomes the owner of CAT_VALS. */
984 var_set_obs_vals (const struct variable *v_, struct cat_vals *cat_vals)
986 struct variable *v = CONST_CAST (struct variable *, v_ );
987 cat_stored_values_destroy (v->obs_vals);
988 v->obs_vals = cat_vals;
991 /* Returns true if V has observed categorical values,
994 var_has_obs_vals (const struct variable *v)
996 return v->obs_vals != NULL;
999 /* Returns variable V's attribute set. The caller may examine or
1000 modify the attribute set, but must not destroy it. Destroying
1001 V, or calling var_set_attributes() on V, will also destroy its
1004 var_get_attributes (const struct variable *v)
1006 return CONST_CAST (struct attrset *, &v->attributes);
1009 /* Replaces variable V's attributes set by a copy of ATTRS. */
1011 var_set_attributes (struct variable *v, const struct attrset *attrs)
1013 attrset_destroy (&v->attributes);
1014 attrset_clone (&v->attributes, attrs);
1017 /* Returns true if V has any custom attributes, false if it has none. */
1019 var_has_attributes (const struct variable *v)
1021 return attrset_count (&v->attributes) > 0;
1024 /* Returns the encoding of values of variable VAR. (This is actually a
1025 property of the dictionary.) Returns null if no specific encoding has been
1028 var_get_encoding (const struct variable *var)
1030 return (var_has_vardict (var)
1031 ? dict_get_encoding (vardict_get_dictionary (var->vardict))
1035 /* Returns V's vardict structure. */
1036 struct vardict_info *
1037 var_get_vardict (const struct variable *v)
1039 return CONST_CAST (struct vardict_info *, v->vardict);
1042 /* Sets V's vardict data to VARDICT. */
1044 var_set_vardict (struct variable *v, struct vardict_info *vardict)
1046 v->vardict = vardict;
1049 /* Returns true if V has vardict data. */
1051 var_has_vardict (const struct variable *v)
1053 return v->vardict != NULL;
1056 /* Clears V's vardict data. */
1058 var_clear_vardict (struct variable *v)