-/* PSPP - computes sample statistics.
+/* PSPP - a program for statistical analysis.
Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
- Written by Ben Pfaff <blp@gnu.org>.
- 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 the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ 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
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <data/procedure.h>
#include <data/variable.h>
#include <libpspp/alloc.h>
+#include <libpspp/assertion.h>
#include <libpspp/bit-vector.h>
#include <libpspp/hash.h>
#include <libpspp/message.h>
#include "gettext.h"
#define _(msgid) gettext (msgid)
+static struct variable * var_set_get_var (const struct var_set *, size_t );
+
+static struct variable *var_set_lookup_var (const struct var_set *,
+ const char *);
+
+static bool var_set_lookup_var_idx (const struct var_set *, const char *,
+ size_t *);
+
+
+
/* Parses a name as a variable within VS. Sets *IDX to the
variable's index and returns true if successful. On failure
emits an error message and returns false. */
static bool
-parse_vs_variable_idx (const struct var_set *vs, size_t *idx)
+parse_vs_variable_idx (struct lexer *lexer, const struct var_set *vs,
+ size_t *idx)
{
assert (idx != NULL);
-
- if (token != T_ID)
+
+ if (lex_token (lexer) != T_ID)
{
- lex_error (_("expecting variable name"));
+ lex_error (lexer, _("expecting variable name"));
return false;
}
- else if (var_set_lookup_var_idx (vs, tokid, idx))
+ else if (var_set_lookup_var_idx (vs, lex_tokid (lexer), idx))
{
- lex_get ();
+ lex_get (lexer);
return true;
}
- else
+ else
{
- msg (SE, _("%s is not a variable name."), tokid);
+ msg (SE, _("%s is not a variable name."), lex_tokid (lexer));
return false;
}
}
if successful. On failure emits an error message and returns
a null pointer. */
static struct variable *
-parse_vs_variable (const struct var_set *vs)
+parse_vs_variable (struct lexer *lexer, const struct var_set *vs)
{
size_t idx;
- return parse_vs_variable_idx (vs, &idx) ? var_set_get_var (vs, idx) : NULL;
+ return parse_vs_variable_idx (lexer, vs, &idx) ? var_set_get_var (vs, idx) : NULL;
}
/* Parses a variable name in dictionary D and returns the
variable if successful. On failure emits an error message and
returns a null pointer. */
struct variable *
-parse_dict_variable (const struct dictionary *d)
+parse_variable (struct lexer *lexer, const struct dictionary *d)
{
struct var_set *vs = var_set_create_from_dict (d);
- struct variable *var = parse_vs_variable (vs);
+ struct variable *var = parse_vs_variable (lexer, vs);
var_set_destroy (vs);
return var;
}
-/* Parses a variable name in dataset_dict (current_dataset) and returns the
- variable if successful. On failure emits an error message and
- returns a null pointer. */
-struct variable *
-parse_variable (void)
-{
- return parse_dict_variable (dataset_dict (current_dataset));
-}
-
-
/* Parses a set of variables from dictionary D given options
OPTS. Resulting list of variables stored in *VAR and the
number of variables into *CNT. Returns true only if
successful. */
bool
-parse_variables (const struct dictionary *d, struct variable ***var,
- size_t *cnt, int opts)
+parse_variables (struct lexer *lexer, const struct dictionary *d,
+ struct variable ***var,
+ size_t *cnt, int opts)
{
struct var_set *vs;
int success;
assert (cnt != NULL);
vs = var_set_create_from_dict (d);
- success = parse_var_set_vars (vs, var, cnt, opts);
- if ( success == 0 )
- free ( *var ) ;
+ success = parse_var_set_vars (lexer, vs, var, cnt, opts);
var_set_destroy (vs);
return success;
}
successful. Same behavior as parse_variables, except that all
allocations are taken from the given POOL. */
bool
-parse_variables_pool (struct pool *pool, const struct dictionary *dict,
- struct variable ***vars, size_t *var_cnt, int opts)
+parse_variables_pool (struct lexer *lexer, struct pool *pool,
+ const struct dictionary *dict,
+ struct variable ***vars, size_t *var_cnt, int opts)
{
int retval;
already in the pool, which would attempt to re-free it
later. */
assert (!(opts & PV_APPEND));
-
- retval = parse_variables (dict, vars, var_cnt, opts);
+
+ retval = parse_variables (lexer, dict, vars, var_cnt, opts);
if (retval)
pool_register (pool, free, *vars);
return retval;
dictionary class, and returns true. Returns false on
failure. */
static bool
-parse_var_idx_class (const struct var_set *vs, size_t *idx,
- enum dict_class *class)
+parse_var_idx_class (struct lexer *lexer, const struct var_set *vs,
+ size_t *idx,
+ enum dict_class *class)
{
- if (!parse_vs_variable_idx (vs, idx))
+ if (!parse_vs_variable_idx (lexer, vs, idx))
return false;
- *class = dict_class_from_id (var_set_get_var (vs, *idx)->name);
+ *class = dict_class_from_id (var_get_name (var_set_get_var (vs, *idx)));
return true;
}
const struct var_set *vs, size_t idx)
{
struct variable *add = var_set_get_var (vs, idx);
+ const char *add_name = var_get_name (add);
- if ((pv_opts & PV_NUMERIC) && add->type != NUMERIC)
+ if ((pv_opts & PV_NUMERIC) && !var_is_numeric (add))
msg (SW, _("%s is not a numeric variable. It will not be "
- "included in the variable list."), add->name);
- else if ((pv_opts & PV_STRING) && add->type != ALPHA)
+ "included in the variable list."), add_name);
+ else if ((pv_opts & PV_STRING) && !var_is_alpha (add))
msg (SE, _("%s is not a string variable. It will not be "
- "included in the variable list."), add->name);
+ "included in the variable list."), add_name);
else if ((pv_opts & PV_NO_SCRATCH)
- && dict_class_from_id (add->name) == DC_SCRATCH)
+ && dict_class_from_id (add_name) == DC_SCRATCH)
msg (SE, _("Scratch variables (such as %s) are not allowed "
- "here."), add->name);
- else if ((pv_opts & PV_SAME_TYPE) && *nv && add->type != (*v)[0]->type)
+ "here."), add_name);
+ else if ((pv_opts & (PV_SAME_TYPE | PV_SAME_WIDTH)) && *nv
+ && var_get_type (add) != var_get_type ((*v)[0]))
msg (SE, _("%s and %s are not the same type. All variables in "
"this variable list must be of the same type. %s "
- "will be omitted from list."),
- (*v)[0]->name, add->name, add->name);
- else if ((pv_opts & PV_NO_DUPLICATE) && included[idx])
- msg (SE, _("Variable %s appears twice in variable list."), add->name);
+ "will be omitted from the list."),
+ var_get_name ((*v)[0]), add_name, add_name);
+ else if ((pv_opts & PV_SAME_WIDTH) && *nv
+ && var_get_width (add) != var_get_width ((*v)[0]))
+ msg (SE, _("%s and %s are string variables with different widths. "
+ "All variables in this variable list must have the "
+ "same width. %s will be omttied from the list."),
+ var_get_name ((*v)[0]), add_name, add_name);
+ else if ((pv_opts & PV_NO_DUPLICATE) && included[idx])
+ msg (SE, _("Variable %s appears twice in variable list."), add_name);
else if ((pv_opts & PV_DUPLICATE) || !included[idx])
{
if (*nv >= *mv)
add_variables (struct variable ***v, size_t *nv, size_t *mv, char *included,
int pv_opts,
const struct var_set *vs, int first_idx, int last_idx,
- enum dict_class class)
+ enum dict_class class)
{
size_t i;
-
+
for (i = first_idx; i <= last_idx; i++)
- if (dict_class_from_id (var_set_get_var (vs, i)->name) == class)
+ if (dict_class_from_id (var_get_name (var_set_get_var (vs, i))) == class)
add_variable (v, nv, mv, included, pv_opts, vs, i);
}
Conversely, if parse_variables() returns true, then *nv is
nonzero and *v is non-NULL. */
bool
-parse_var_set_vars (const struct var_set *vs,
+parse_var_set_vars (struct lexer *lexer, const struct var_set *vs,
struct variable ***v, size_t *nv,
int pv_opts)
{
assert (v != NULL);
assert (nv != NULL);
- /* At most one of PV_NUMERIC, PV_STRING, PV_SAME_TYPE may be
- specified. */
- assert ((((pv_opts & PV_NUMERIC) != 0)
- + ((pv_opts & PV_STRING) != 0)
- + ((pv_opts & PV_SAME_TYPE) != 0)) <= 1);
+ /* At most one of PV_NUMERIC, PV_STRING, PV_SAME_TYPE,
+ PV_SAME_WIDTH may be specified. */
+ assert (((pv_opts & PV_NUMERIC) != 0)
+ + ((pv_opts & PV_STRING) != 0)
+ + ((pv_opts & PV_SAME_TYPE) != 0)
+ + ((pv_opts & PV_SAME_WIDTH) != 0) <= 1);
/* PV_DUPLICATE and PV_NO_DUPLICATE are incompatible. */
assert (!(pv_opts & PV_DUPLICATE) || !(pv_opts & PV_NO_DUPLICATE));
if (!(pv_opts & PV_DUPLICATE))
{
size_t i;
-
+
included = xcalloc (var_set_get_cnt (vs), sizeof *included);
for (i = 0; i < *nv; i++)
- included[(*v)[i]->index] = 1;
+ {
+ size_t index;
+ if (!var_set_lookup_var_idx (vs, var_get_name ((*v)[i]), &index))
+ NOT_REACHED ();
+ included[index] = 1;
+ }
}
else
included = NULL;
do
{
- if (lex_match (T_ALL))
+ if (lex_match (lexer, T_ALL))
add_variables (v, nv, &mv, included, pv_opts,
vs, 0, var_set_get_cnt (vs) - 1, DC_ORDINARY);
- else
+ else
{
enum dict_class class;
size_t first_idx;
- if (!parse_var_idx_class (vs, &first_idx, &class))
+ if (!parse_var_idx_class (lexer, vs, &first_idx, &class))
goto fail;
- if (!lex_match (T_TO))
+ if (!lex_match (lexer, T_TO))
add_variable (v, nv, &mv, included, pv_opts, vs, first_idx);
- else
+ else
{
size_t last_idx;
enum dict_class last_class;
struct variable *first_var, *last_var;
- if (!parse_var_idx_class (vs, &last_idx, &last_class))
+ if (!parse_var_idx_class (lexer, vs, &last_idx, &last_class))
goto fail;
first_var = var_set_get_var (vs, first_idx);
if (last_idx < first_idx)
{
+ const char *first_name = var_get_name (first_var);
+ const char *last_name = var_get_name (last_var);
msg (SE, _("%s TO %s is not valid syntax since %s "
"precedes %s in the dictionary."),
- first_var->name, last_var->name,
- first_var->name, last_var->name);
+ first_name, last_name, first_name, last_name);
goto fail;
}
"the same variable dictionaries, of either "
"ordinary, scratch, or system variables. "
"%s is a %s variable, whereas %s is %s."),
- first_var->name, dict_class_to_name (class),
- last_var->name, dict_class_to_name (last_class));
+ var_get_name (first_var), dict_class_to_name (class),
+ var_get_name (last_var),
+ dict_class_to_name (last_class));
goto fail;
}
add_variables (v, nv, &mv, included, pv_opts,
vs, first_idx, last_idx, class);
- }
+ }
}
if (pv_opts & PV_SINGLE)
break;
- lex_match (',');
+ lex_match (lexer, ',');
}
- while (token == T_ALL
- || (token == T_ID && var_set_lookup_var (vs, tokid) != NULL));
-
+ while (lex_token (lexer) == T_ALL
+ || (lex_token (lexer) == T_ID && var_set_lookup_var (vs, lex_tokid (lexer)) != NULL));
+
if (*nv == 0)
goto fail;
/* Parses a list of variable names according to the DATA LIST version
of the TO convention. */
bool
-parse_DATA_LIST_vars (char ***names, size_t *nnames, int pv_opts)
+parse_DATA_LIST_vars (struct lexer *lexer, char ***names, size_t *nnames, int pv_opts)
{
int n1, n2;
int d1, d2;
do
{
- if (token != T_ID)
+ if (lex_token (lexer) != T_ID)
{
- lex_error ("expecting variable name");
+ lex_error (lexer, "expecting variable name");
goto fail;
}
- if (dict_class_from_id (tokid) == DC_SCRATCH
+ if (dict_class_from_id (lex_tokid (lexer)) == DC_SCRATCH
&& (pv_opts & PV_NO_SCRATCH))
{
msg (SE, _("Scratch variables not allowed here."));
goto fail;
}
- strcpy (name1, tokid);
- lex_get ();
- if (token == T_TO)
+ strcpy (name1, lex_tokid (lexer));
+ lex_get (lexer);
+ if (lex_token (lexer) == T_TO)
{
- lex_get ();
- if (token != T_ID)
+ lex_get (lexer);
+ if (lex_token (lexer) != T_ID)
{
- lex_error ("expecting variable name");
+ lex_error (lexer, "expecting variable name");
goto fail;
}
- strcpy (name2, tokid);
- lex_get ();
+ strcpy (name2, lex_tokid (lexer));
+ lex_get (lexer);
if (!extract_num (name1, root1, &n1, &d1)
|| !extract_num (name2, root2, &n2, &d2))
(*names)[nvar++] = xstrdup (name1);
}
- lex_match (',');
+ lex_match (lexer, ',');
if (pv_opts & PV_SINGLE)
break;
}
- while (token == T_ID);
+ while (lex_token (lexer) == T_ID);
success = 1;
fail:
parse_DATA_LIST_vars(), except that all allocations are taken
from the given POOL. */
bool
-parse_DATA_LIST_vars_pool (struct pool *pool,
+parse_DATA_LIST_vars_pool (struct lexer *lexer, struct pool *pool,
char ***names, size_t *nnames, int pv_opts)
{
int retval;
presumably already in the pool, which would attempt to
re-free it later. */
assert (!(pv_opts & PV_APPEND));
-
- retval = parse_DATA_LIST_vars (names, nnames, pv_opts);
+
+ retval = parse_DATA_LIST_vars (lexer, names, nnames, pv_opts);
if (retval)
register_vars_pool (pool, *names, *nnames);
return retval;
existing and the rest are to be created. Same args as
parse_DATA_LIST_vars(). */
bool
-parse_mixed_vars (char ***names, size_t *nnames, int pv_opts)
+parse_mixed_vars (struct lexer *lexer, const struct dictionary *dict,
+ char ***names, size_t *nnames, int pv_opts)
{
size_t i;
*names = NULL;
*nnames = 0;
}
- while (token == T_ID || token == T_ALL)
+ while (lex_token (lexer) == T_ID || lex_token (lexer) == T_ALL)
{
- if (token == T_ALL || dict_lookup_var (dataset_dict (current_dataset), tokid) != NULL)
+ if (lex_token (lexer) == T_ALL || dict_lookup_var (dict, lex_tokid (lexer)) != NULL)
{
struct variable **v;
size_t nv;
- if (!parse_variables (dataset_dict (current_dataset), &v, &nv, PV_NONE))
+ if (!parse_variables (lexer, dict, &v, &nv, PV_NONE))
goto fail;
*names = xnrealloc (*names, *nnames + nv, sizeof **names);
for (i = 0; i < nv; i++)
- (*names)[*nnames + i] = xstrdup (v[i]->name);
+ (*names)[*nnames + i] = xstrdup (var_get_name (v[i]));
free (v);
*nnames += nv;
}
- else if (!parse_DATA_LIST_vars (names, nnames, PV_APPEND))
+ else if (!parse_DATA_LIST_vars (lexer, names, nnames, PV_APPEND))
goto fail;
}
return 1;
parse_mixed_vars(), except that all allocations are taken
from the given POOL. */
bool
-parse_mixed_vars_pool (struct pool *pool,
+parse_mixed_vars_pool (struct lexer *lexer, const struct dictionary *dict, struct pool *pool,
char ***names, size_t *nnames, int pv_opts)
{
int retval;
re-free it later. */
assert (!(pv_opts & PV_APPEND));
- retval = parse_mixed_vars (names, nnames, pv_opts);
+ retval = parse_mixed_vars (lexer, dict, names, nnames, pv_opts);
if (retval)
register_vars_pool (pool, *names, *nnames);
return retval;
}
\f
/* A set of variables. */
-struct var_set
+struct var_set
{
size_t (*get_cnt) (const struct var_set *);
struct variable *(*get_var) (const struct var_set *, size_t idx);
/* Returns the number of variables in VS. */
size_t
-var_set_get_cnt (const struct var_set *vs)
+var_set_get_cnt (const struct var_set *vs)
{
assert (vs != NULL);
/* Return variable with index IDX in VS.
IDX must be less than the number of variables in VS. */
-struct variable *
-var_set_get_var (const struct var_set *vs, size_t idx)
+static struct variable *
+var_set_get_var (const struct var_set *vs, size_t idx)
{
assert (vs != NULL);
assert (idx < var_set_get_cnt (vs));
/* Returns the variable in VS named NAME, or a null pointer if VS
contains no variable with that name. */
struct variable *
-var_set_lookup_var (const struct var_set *vs, const char *name)
+var_set_lookup_var (const struct var_set *vs, const char *name)
{
size_t idx;
return (var_set_lookup_var_idx (vs, name, &idx)
/* Destroys VS. */
void
-var_set_destroy (struct var_set *vs)
+var_set_destroy (struct var_set *vs)
{
if (vs != NULL)
vs->destroy (vs);
\f
/* Returns the number of variables in VS. */
static size_t
-dict_var_set_get_cnt (const struct var_set *vs)
+dict_var_set_get_cnt (const struct var_set *vs)
{
struct dictionary *d = vs->aux;
/* Return variable with index IDX in VS.
IDX must be less than the number of variables in VS. */
static struct variable *
-dict_var_set_get_var (const struct var_set *vs, size_t idx)
+dict_var_set_get_var (const struct var_set *vs, size_t idx)
{
struct dictionary *d = vs->aux;
and returns true. Otherwise, returns false. */
static bool
dict_var_set_lookup_var_idx (const struct var_set *vs, const char *name,
- size_t *idx)
+ size_t *idx)
{
struct dictionary *d = vs->aux;
struct variable *v = dict_lookup_var (d, name);
- if (v != NULL)
+ if (v != NULL)
{
- *idx = v->index;
+ *idx = var_get_dict_index (v);
return true;
}
else
/* Destroys VS. */
static void
-dict_var_set_destroy (struct var_set *vs)
+dict_var_set_destroy (struct var_set *vs)
{
free (vs);
}
/* Returns a variable set based on D. */
struct var_set *
-var_set_create_from_dict (const struct dictionary *d)
+var_set_create_from_dict (const struct dictionary *d)
{
struct var_set *vs = xmalloc (sizeof *vs);
vs->get_cnt = dict_var_set_get_cnt;
}
\f
/* A variable set based on an array. */
-struct array_var_set
+struct array_var_set
{
struct variable *const *var;/* Array of variables. */
size_t var_cnt; /* Number of elements in var. */
/* Returns the number of variables in VS. */
static size_t
-array_var_set_get_cnt (const struct var_set *vs)
+array_var_set_get_cnt (const struct var_set *vs)
{
struct array_var_set *avs = vs->aux;
/* Return variable with index IDX in VS.
IDX must be less than the number of variables in VS. */
static struct variable *
-array_var_set_get_var (const struct var_set *vs, size_t idx)
+array_var_set_get_var (const struct var_set *vs, size_t idx)
{
struct array_var_set *avs = vs->aux;
and returns true. Otherwise, returns false. */
static bool
array_var_set_lookup_var_idx (const struct var_set *vs, const char *name,
- size_t *idx)
+ size_t *idx)
{
struct array_var_set *avs = vs->aux;
- struct variable v, *vp, *const *vpp;
+ struct variable *v, *const *vpp;
- strcpy (v.name, name);
- vp = &v;
- vpp = hsh_find (avs->name_tab, &vp);
- if (vpp != NULL)
+ v = var_create (name, 0);
+ vpp = hsh_find (avs->name_tab, &v);
+ var_destroy (v);
+
+ if (vpp != NULL)
{
*idx = vpp - avs->var;
return true;
/* Destroys VS. */
static void
-array_var_set_destroy (struct var_set *vs)
+array_var_set_destroy (struct var_set *vs)
{
struct array_var_set *avs = vs->aux;
/* Returns a variable set based on the VAR_CNT variables in
VAR. */
struct var_set *
-var_set_create_from_array (struct variable *const *var, size_t var_cnt)
+var_set_create_from_array (struct variable *const *var, size_t var_cnt)
{
struct var_set *vs;
struct array_var_set *avs;
avs->var = var;
avs->var_cnt = var_cnt;
avs->name_tab = hsh_create (2 * var_cnt,
- compare_var_ptr_names, hash_var_ptr_name, NULL,
- NULL);
+ compare_var_ptrs_by_name, hash_var_ptr_by_name,
+ NULL, NULL);
for (i = 0; i < var_cnt; i++)
- if (hsh_insert (avs->name_tab, (void *) &var[i]) != NULL)
+ if (hsh_insert (avs->name_tab, (void *) &var[i]) != NULL)
{
var_set_destroy (vs);
return NULL;
}
-
+
return vs;
}
+
projects / pspp / blobdiff