+++ /dev/null
-/* PSPP - a program for statistical analysis.
- Copyright (C) 1997-9, 2000, 2007, 2009-2012 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
- 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.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-#include <config.h>
-
-#include <stdlib.h>
-
-#include "data/dataset.h"
-#include "data/dictionary.h"
-#include "data/settings.h"
-#include "language/command.h"
-#include "language/lexer/lexer.h"
-#include "language/lexer/segment.h"
-#include "language/lexer/token.h"
-#include "language/lexer/variable-parser.h"
-#include "libpspp/assertion.h"
-#include "libpspp/cast.h"
-#include "libpspp/hash-functions.h"
-#include "libpspp/hmap.h"
-#include "libpspp/i18n.h"
-#include "libpspp/message.h"
-#include "libpspp/str.h"
-#include "libpspp/misc.h"
-#include "output/output-item.h"
-
-#include "gl/ftoastr.h"
-#include "gl/minmax.h"
-#include "gl/xalloc.h"
-#include "gl/xmemdup0.h"
-
-#include "gettext.h"
-#define _(msgid) gettext (msgid)
-
-struct dummy_var
- {
- struct hmap_node hmap_node;
- struct substring name;
- char **values;
- size_t n_values;
- int start_ofs, end_ofs;
- };
-
-static bool parse_specification (struct lexer *, struct dictionary *,
- struct hmap *dummies);
-static bool parse_commands (struct lexer *, struct hmap *dummies);
-static void destroy_dummies (struct hmap *dummies);
-
-static bool parse_ids (struct lexer *, const struct dictionary *,
- struct dummy_var *);
-static bool parse_numbers (struct lexer *, struct dummy_var *);
-static bool parse_strings (struct lexer *, struct dummy_var *);
-
-int
-cmd_do_repeat (struct lexer *lexer, struct dataset *ds)
-{
- struct hmap dummies = HMAP_INITIALIZER (dummies);
- bool ok = parse_specification (lexer, dataset_dict (ds), &dummies);
- ok = parse_commands (lexer, &dummies) && ok;
- destroy_dummies (&dummies);
-
- return ok ? CMD_SUCCESS : CMD_CASCADING_FAILURE;
-}
-
-static const struct dummy_var *
-find_dummy_var (struct hmap *hmap, struct substring name)
-{
- const struct dummy_var *dv;
-
- HMAP_FOR_EACH_WITH_HASH (dv, struct dummy_var, hmap_node,
- utf8_hash_case_substring (name, 0), hmap)
- if (!utf8_sscasecmp (dv->name, name))
- return dv;
-
- return NULL;
-}
-
-/* Parses the whole DO REPEAT command specification.
- Returns success. */
-static bool
-parse_specification (struct lexer *lexer, struct dictionary *dict,
- struct hmap *dummies)
-{
- struct dummy_var *first_dv = NULL;
-
- do
- {
- int start_ofs = lex_ofs (lexer);
-
- /* Get a stand-in variable name and make sure it's unique. */
- if (!lex_force_id (lexer))
- goto error;
- struct substring name = lex_tokss (lexer);
- if (dict_lookup_var (dict, name.string))
- lex_msg (lexer, SW,
- _("Dummy variable name `%s' hides dictionary variable `%s'."),
- name.string, name.string);
- if (find_dummy_var (dummies, name))
- {
- lex_error (lexer, _("Dummy variable name `%s' is given twice."),
- name.string);
- goto error;
- }
-
- /* Make a new macro. */
- struct dummy_var *dv = xmalloc (sizeof *dv);
- *dv = (struct dummy_var) {
- .name = ss_clone (name),
- .start_ofs = start_ofs,
- };
- hmap_insert (dummies, &dv->hmap_node, utf8_hash_case_substring (name, 0));
-
- /* Skip equals sign. */
- lex_get (lexer);
- if (!lex_force_match (lexer, T_EQUALS))
- goto error;
-
- /* Get the details of the variable's possible values. */
- bool ok;
- if (lex_token (lexer) == T_ID || lex_token (lexer) == T_ALL)
- ok = parse_ids (lexer, dict, dv);
- else if (lex_is_number (lexer))
- ok = parse_numbers (lexer, dv);
- else if (lex_is_string (lexer))
- ok = parse_strings (lexer, dv);
- else
- {
- lex_error (lexer, _("Syntax error expecting substitution values."));
- goto error;
- }
- if (!ok)
- goto error;
- assert (dv->n_values > 0);
- if (lex_token (lexer) != T_SLASH && lex_token (lexer) != T_ENDCMD)
- {
- lex_error (lexer, _("Syntax error expecting `/' or end of command."));
- goto error;
- }
- dv->end_ofs = lex_ofs (lexer) - 1;
-
- /* If this is the first variable then it defines how many replacements
- there must be; otherwise enforce this number of replacements. */
- if (first_dv == NULL)
- first_dv = dv;
- else if (first_dv->n_values != dv->n_values)
- {
- msg (SE, _("Each dummy variable must have the same number of "
- "substitutions."));
-
- lex_ofs_msg (lexer, SN, first_dv->start_ofs, first_dv->end_ofs,
- ngettext ("Dummy variable %s had %zu substitution.",
- "Dummy variable %s had %zu substitutions.",
- first_dv->n_values),
- first_dv->name.string, first_dv->n_values);
- lex_ofs_msg (lexer, SN, dv->start_ofs, dv->end_ofs,
- ngettext ("Dummy variable %s had %zu substitution.",
- "Dummy variable %s had %zu substitutions.",
- dv->n_values),
- dv->name.string, dv->n_values);
- goto error;
- }
-
- lex_match (lexer, T_SLASH);
- }
- while (!lex_match (lexer, T_ENDCMD));
-
- while (lex_match (lexer, T_ENDCMD))
- continue;
-
- return true;
-
-error:
- lex_discard_rest_of_command (lexer);
- while (lex_match (lexer, T_ENDCMD))
- continue;
- destroy_dummies (dummies);
- hmap_init (dummies);
- return false;
-}
-
-static size_t
-count_values (struct hmap *dummies)
-{
- if (hmap_is_empty (dummies))
- return 0;
- const struct dummy_var *dv = HMAP_FIRST (struct dummy_var, hmap_node, dummies);
- return dv->n_values;
-}
-
-static void
-do_parse_commands (struct substring s, enum segmenter_mode mode,
- struct hmap *dummies,
- struct string *outputs, size_t n_outputs)
-{
- struct segmenter segmenter = segmenter_init (mode, false);
- while (!ss_is_empty (s))
- {
- enum segment_type type;
- int n = segmenter_push (&segmenter, s.string, s.length, true, &type);
- assert (n >= 0);
-
- if (type == SEG_DO_REPEAT_COMMAND)
- {
- for (;;)
- {
- int k = segmenter_push (&segmenter, s.string + n, s.length - n,
- true, &type);
- if (type != SEG_NEWLINE && type != SEG_DO_REPEAT_COMMAND)
- break;
-
- n += k;
- }
-
- do_parse_commands (ss_head (s, n), mode, dummies,
- outputs, n_outputs);
- }
- else if (type != SEG_END)
- {
- const struct dummy_var *dv
- = (type == SEG_IDENTIFIER ? find_dummy_var (dummies, ss_head (s, n))
- : NULL);
- for (size_t i = 0; i < n_outputs; i++)
- if (dv != NULL)
- ds_put_cstr (&outputs[i], dv->values[i]);
- else
- ds_put_substring (&outputs[i], ss_head (s, n));
- }
-
- ss_advance (&s, n);
- }
-}
-
-static bool
-parse_commands (struct lexer *lexer, struct hmap *dummies)
-{
- char *file_name = xstrdup_if_nonnull (lex_get_file_name (lexer));
- int line_number = lex_ofs_start_point (lexer, lex_ofs (lexer)).line;
-
- struct string input = DS_EMPTY_INITIALIZER;
- while (lex_is_string (lexer))
- {
- ds_put_substring (&input, lex_tokss (lexer));
- ds_put_byte (&input, '\n');
- lex_get (lexer);
- }
-
- size_t n_values = count_values (dummies);
- struct string *outputs = xmalloc (n_values * sizeof *outputs);
- for (size_t i = 0; i < n_values; i++)
- ds_init_empty (&outputs[i]);
-
- do_parse_commands (ds_ss (&input), lex_get_syntax_mode (lexer),
- dummies, outputs, n_values);
-
- ds_destroy (&input);
-
- while (lex_match (lexer, T_ENDCMD))
- continue;
-
- bool ok = lex_match_phrase (lexer, "END REPEAT");
- if (!ok)
- lex_error (lexer, _("Syntax error expecting END REPEAT."));
- bool print = ok && lex_match_id (lexer, "PRINT");
- lex_discard_rest_of_command (lexer);
-
- for (size_t i = 0; i < n_values; i++)
- {
- struct string *output = &outputs[n_values - i - 1];
- if (print)
- {
- struct substring s = output->ss;
- ss_chomp_byte (&s, '\n');
- char *label = xasprintf (_("Expansion %zu of %zu"), i + 1, n_values);
- output_item_submit (
- text_item_create_nocopy (TEXT_ITEM_LOG, ss_xstrdup (s), label));
- }
- const char *encoding = lex_get_encoding (lexer);
- struct lex_reader *reader = lex_reader_for_substring_nocopy (ds_ss (output), encoding);
- lex_reader_set_file_name (reader, file_name);
- reader->line_number = line_number;
- lex_include (lexer, reader);
- }
- free (file_name);
- free (outputs);
-
- return ok;
-}
-
-static void
-destroy_dummies (struct hmap *dummies)
-{
- struct dummy_var *dv, *next;
-
- HMAP_FOR_EACH_SAFE (dv, next, struct dummy_var, hmap_node, dummies)
- {
- hmap_delete (dummies, &dv->hmap_node);
-
- ss_dealloc (&dv->name);
- for (size_t i = 0; i < dv->n_values; i++)
- free (dv->values[i]);
- free (dv->values);
- free (dv);
- }
- hmap_destroy (dummies);
-}
-
-/* Parses a set of ids for DO REPEAT. */
-static bool
-parse_ids (struct lexer *lexer, const struct dictionary *dict,
- struct dummy_var *dv)
-{
- return parse_mixed_vars (lexer, dict, &dv->values, &dv->n_values, PV_NONE);
-}
-
-/* Adds REPLACEMENT to MACRO's list of replacements, which has
- *USED elements and has room for *ALLOCATED. Allocates memory
- from POOL. */
-static void
-add_replacement (struct dummy_var *dv, char *value, size_t *allocated)
-{
- if (dv->n_values == *allocated)
- dv->values = x2nrealloc (dv->values, allocated, sizeof *dv->values);
- dv->values[dv->n_values++] = value;
-}
-
-/* Parses a list or range of numbers for DO REPEAT. */
-static bool
-parse_numbers (struct lexer *lexer, struct dummy_var *dv)
-{
- size_t allocated = 0;
-
- do
- {
- if (!lex_force_num (lexer))
- return false;
-
- if (lex_next_token (lexer, 1) == T_TO)
- {
- if (!lex_is_integer (lexer))
- {
- lex_error (lexer, _("Ranges may only have integer bounds."));
- return false;
- }
-
- long a = lex_integer (lexer);
- lex_get (lexer);
- lex_get (lexer);
-
- if (!lex_force_int_range (lexer, NULL, a, LONG_MAX))
- return false;
-
- long b = lex_integer (lexer);
- if (b < a)
- {
- lex_next_error (lexer, -2, 0,
- _("%ld TO %ld is an invalid range."), a, b);
- return false;
- }
- lex_get (lexer);
-
- for (long i = a; i <= b; i++)
- add_replacement (dv, xasprintf ("%ld", i), &allocated);
- }
- else
- {
- char s[DBL_BUFSIZE_BOUND];
-
- c_dtoastr (s, sizeof s, 0, 0, lex_number (lexer));
- add_replacement (dv, xstrdup (s), &allocated);
- lex_get (lexer);
- }
-
- lex_match (lexer, T_COMMA);
- }
- while (lex_token (lexer) != T_SLASH && lex_token (lexer) != T_ENDCMD);
-
- return true;
-}
-
-/* Parses a list of strings for DO REPEAT. */
-static bool
-parse_strings (struct lexer *lexer, struct dummy_var *dv)
-{
- size_t allocated = 0;
-
- do
- {
- if (!lex_force_string (lexer))
- return false;
-
- add_replacement (dv, token_to_string (lex_next (lexer, 0)), &allocated);
-
- lex_get (lexer);
- lex_match (lexer, T_COMMA);
- }
- while (lex_token (lexer) != T_SLASH && lex_token (lexer) != T_ENDCMD);
-
- return true;
-}
-\f
-int
-cmd_end_repeat (struct lexer *lexer, struct dataset *ds UNUSED)
-{
- lex_ofs_error (lexer, 0, 1, _("No matching %s."), "DO REPEAT");
- return CMD_CASCADING_FAILURE;
-}
projects / pspp / blobdiff