-/* Classes of variables. */
-enum dict_class
- {
- DC_ORDINARY, /* Ordinary identifier. */
- DC_SYSTEM, /* System variable. */
- DC_SCRATCH /* Scratch variable. */
- };
-
-enum dict_class dict_class_from_id (const char *name);
-const char *dict_class_to_name (enum dict_class dict_class);
-\f
-/* Vector of variables. */
-struct vector
- {
- int idx; /* Index for dict_get_vector(). */
- char name[LONG_NAME_LEN + 1]; /* Name. */
- struct variable **var; /* Vector of variables. */
- int cnt; /* Number of variables. */
- };
-\f
-void discard_variables (void);
-
-/* This is the active file dictionary. */
-extern struct dictionary *default_dict;
-\f
-/* Transformation state. */
-
-/* PROCESS IF expression. */
-extern struct expression *process_if_expr;
-\f
-/* TEMPORARY support. */
-
-/* 1=TEMPORARY has been executed at some point. */
-extern int temporary;
-
-/* If temporary!=0, the saved dictionary. */
-extern struct dictionary *temp_dict;
-
-/* If temporary!=0, index into t_trns[] (declared far below) that
- gives the point at which data should be written out. -1 means that
- the data shouldn't be changed since all transformations are
- temporary. */
-extern size_t temp_trns;
-
-void cancel_temporary (void);
-\f
-struct ccase;
-void dump_split_vars (const struct ccase *);
-\f
-/* Transformations. */
-
-/* trns_proc_func return values. */
-#define TRNS_CONTINUE -1 /* Continue to next transformation. */
-#define TRNS_DROP_CASE -2 /* Drop this case. */
-#define TRNS_ERROR -3 /* A serious error, so stop the procedure. */
-#define TRNS_NEXT_CASE -4 /* Skip to next case. INPUT PROGRAM only. */
-#define TRNS_END_FILE -5 /* End of input. INPUT PROGRAM only. */
-
-typedef int trns_proc_func (void *, struct ccase *, int);
-typedef bool trns_free_func (void *);
-
-/* A transformation. */
-struct transformation
- {
- trns_proc_func *proc; /* Transformation proc. */
- trns_free_func *free; /* Garbage collector proc. */
- void *private; /* Private data. */
- };
-
-/* Array of transformations */
-extern struct transformation *t_trns;
-
-/* Number of transformations, maximum number in array currently. */
-extern size_t n_trns, m_trns;
-
-/* Index of first transformation that is really a transformation. Any
- transformations before this belong to INPUT PROGRAM. */
-extern size_t f_trns;
-
-void add_transformation (trns_proc_func *, trns_free_func *, void *);
-size_t next_transformation (void);
-bool cancel_transformations (void);
-\f
-struct var_set;
-
-struct var_set *var_set_create_from_dict (const struct dictionary *d);
-struct var_set *var_set_create_from_array (struct variable *const *var,
- size_t);
-
-size_t var_set_get_cnt (const struct var_set *vs);
-struct variable *var_set_get_var (const struct var_set *vs, size_t idx);
-struct variable *var_set_lookup_var (const struct var_set *vs,
- const char *name);
-bool var_set_lookup_var_idx (const struct var_set *vs, const char *name,
- size_t *idx);
-void var_set_destroy (struct var_set *vs);
-\f
-/* Variable parsers. */
-
-enum
- {
- PV_NONE = 0, /* No options. */
- PV_SINGLE = 0001, /* Restrict to a single name or TO use. */
- PV_DUPLICATE = 0002, /* Don't merge duplicates. */
- PV_APPEND = 0004, /* Append to existing list. */
- PV_NO_DUPLICATE = 0010, /* Error on duplicates. */
- PV_NUMERIC = 0020, /* Vars must be numeric. */
- PV_STRING = 0040, /* Vars must be string. */
- PV_SAME_TYPE = 00100, /* All vars must be the same type. */
- PV_NO_SCRATCH = 00200 /* Disallow scratch variables. */
- };
-
-struct pool;
-struct variable *parse_variable (void);
-struct variable *parse_dict_variable (const struct dictionary *);
-int parse_variables (const struct dictionary *, struct variable ***, size_t *,
- int opts);
-int parse_var_set_vars (const struct var_set *, struct variable ***, size_t *,
- int opts);
-int parse_DATA_LIST_vars (char ***names, size_t *cnt, int opts);
-int parse_mixed_vars (char ***names, size_t *cnt, int opts);
-int parse_mixed_vars_pool (struct pool *,
- char ***names, size_t *cnt, int opts);
-
-
-/* Return a string representing this variable, in the form most
- appropriate from a human factors perspective.
- (IE: the label if it has one, otherwise the name )
-*/
-const char * var_to_string(const struct variable *var);
-
-
-/* Two complementary functions for dealing with
- Very Long String variables */
-
-void copy_demangle (char *dst, size_t dst_size,
- const char *src, size_t src_size);
-
-void copy_mangle (char *dst, size_t dst_size,
- const char *src, size_t src_size);