\f
/* Transformation functions. */
+/* Handle COMPUTE or IF with numeric target variable. */
static int
compute_num (struct trns_header *compute_, struct ccase *c,
int case_num)
return -1;
}
+/* Handle COMPUTE or IF with numeric vector element target
+ variable. */
static int
compute_num_vec (struct trns_header *compute_, struct ccase *c,
int case_num)
return -1;
}
+/* Handle COMPUTE or IF with string target variable. */
static int
compute_str (struct trns_header *compute_, struct ccase *c,
int case_num)
return -1;
}
+/* Handle COMPUTE or IF with string vector element target
+ variable. */
static int
compute_str_vec (struct trns_header *compute_, struct ccase *c,
int case_num)
expr_free (compute->rvalue);
}
\f
+/* COMPUTE or IF target variable or vector element. */
struct lvalue
{
char var_name[9]; /* Destination variable name, or "". */
struct expression *element; /* Destination vector element, or NULL. */
};
+/* Parses the target variable or vector elector into a new
+ `struct lvalue', which is returned. */
static struct lvalue *
lvalue_parse (void)
{
return NULL;
}
+/* Returns the type (NUMERIC or ALPHA) of the target variable or
+ vector in LVALUE. */
static int
lvalue_get_type (const struct lvalue *lvalue)
{
return lvalue->vector->var[0]->type;
}
+/* Returns nonzero if LVALUE has a vector as its target. */
static int
lvalue_is_vector (const struct lvalue *lvalue)
{
return lvalue->vector != NULL;
}
+/* Finalizes making LVALUE the target of COMPUTE, by creating the
+ target variable if necessary and setting fields in COMPUTE. */
static void
lvalue_finalize (struct lvalue *lvalue,
struct compute_trns *compute)
compute->fv = compute->variable->fv;
compute->width = compute->variable->width;
-
-
/* Goofy behavior, but compatible: Turn off LEAVE. */
if (dict_class_from_id (compute->variable->name) != DC_SCRATCH)
compute->variable->reinit = 1;
lvalue_destroy (lvalue);
}
+/* Destroys LVALUE. */
static void
lvalue_destroy (struct lvalue *lvalue)
{