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gmain: fix some silly code in a programmer-error case
[glib.git] / glib / gscanner.c
blob7dc2eb367cd99d332fe3cdea208bb3d2ba410add
1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
3 *
4 * GScanner: Flexible lexical scanner for general purpose.
5 * Copyright (C) 1997, 1998 Tim Janik
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
21 */
22
23 /*
24 * Modified by the GLib Team and others 1997-2000. See the AUTHORS
25 * file for a list of people on the GLib Team. See the ChangeLog
26 * files for a list of changes. These files are distributed with
27 * GLib at ftp://ftp.gtk.org/pub/gtk/.
28 */
29
30 /*
31 * MT safe
32 */
33
34 #include "config.h"
35
36 #include <errno.h>
37 #include <stdlib.h>
38 #include <stdarg.h>
39 #include <string.h>
40 #include <stdio.h>
41 #ifdef HAVE_UNISTD_H
42 #include <unistd.h>
43 #endif
44
45 #include "gscanner.h"
46
47 #include "gprintfint.h"
48 #include "gstrfuncs.h"
49 #include "gstring.h"
50 #include "gtestutils.h"
51
52 #ifdef G_OS_WIN32
53 #include <io.h> /* For _read() */
54 #endif
55
56 /* --- defines --- */
57 #define to_lower(c) ( \
58 (guchar) ( \
59 ( (((guchar)(c))>='A' && ((guchar)(c))<='Z') * ('a'-'A') ) | \
60 ( (((guchar)(c))>=192 && ((guchar)(c))<=214) * (224-192) ) | \
61 ( (((guchar)(c))>=216 && ((guchar)(c))<=222) * (248-216) ) | \
62 ((guchar)(c)) \
63 ) \
64 )
65 #define READ_BUFFER_SIZE (4000)
66
67
68 /* --- typedefs --- */
69 typedef struct _GScannerKey GScannerKey;
70
71 struct _GScannerKey
72 {
73 guint scope_id;
74 gchar *symbol;
75 gpointer value;
76 };
77
78
79 /* --- variables --- */
80 static const GScannerConfig g_scanner_config_template =
81 {
82 (
83 " \t\r\n"
84 ) /* cset_skip_characters */,
85 (
86 G_CSET_a_2_z
87 "_"
88 G_CSET_A_2_Z
89 ) /* cset_identifier_first */,
90 (
91 G_CSET_a_2_z
92 "_"
93 G_CSET_A_2_Z
94 G_CSET_DIGITS
95 G_CSET_LATINS
96 G_CSET_LATINC
97 ) /* cset_identifier_nth */,
98 ( "#\n" ) /* cpair_comment_single */,
99
100 FALSE /* case_sensitive */,
101
102 TRUE /* skip_comment_multi */,
103 TRUE /* skip_comment_single */,
104 TRUE /* scan_comment_multi */,
105 TRUE /* scan_identifier */,
106 FALSE /* scan_identifier_1char */,
107 FALSE /* scan_identifier_NULL */,
108 TRUE /* scan_symbols */,
109 FALSE /* scan_binary */,
110 TRUE /* scan_octal */,
111 TRUE /* scan_float */,
112 TRUE /* scan_hex */,
113 FALSE /* scan_hex_dollar */,
114 TRUE /* scan_string_sq */,
115 TRUE /* scan_string_dq */,
116 TRUE /* numbers_2_int */,
117 FALSE /* int_2_float */,
118 FALSE /* identifier_2_string */,
119 TRUE /* char_2_token */,
120 FALSE /* symbol_2_token */,
121 FALSE /* scope_0_fallback */,
122 FALSE /* store_int64 */,
123 };
124
125
126 /* --- prototypes --- */
127 static inline
128 GScannerKey* g_scanner_lookup_internal (GScanner *scanner,
129 guint scope_id,
130 const gchar *symbol);
131 static gboolean g_scanner_key_equal (gconstpointer v1,
132 gconstpointer v2);
133 static guint g_scanner_key_hash (gconstpointer v);
134 static void g_scanner_get_token_ll (GScanner *scanner,
135 GTokenType *token_p,
136 GTokenValue *value_p,
137 guint *line_p,
138 guint *position_p);
139 static void g_scanner_get_token_i (GScanner *scanner,
140 GTokenType *token_p,
141 GTokenValue *value_p,
142 guint *line_p,
143 guint *position_p);
144
145 static guchar g_scanner_peek_next_char (GScanner *scanner);
146 static guchar g_scanner_get_char (GScanner *scanner,
147 guint *line_p,
148 guint *position_p);
149 static void g_scanner_msg_handler (GScanner *scanner,
150 gchar *message,
151 gboolean is_error);
152
153
154 /* --- functions --- */
155 static inline gint
156 g_scanner_char_2_num (guchar c,
157 guchar base)
158 {
159 if (c >= '0' && c <= '9')
160 c -= '0';
161 else if (c >= 'A' && c <= 'Z')
162 c -= 'A' - 10;
163 else if (c >= 'a' && c <= 'z')
164 c -= 'a' - 10;
165 else
166 return -1;
167
168 if (c < base)
169 return c;
170
171 return -1;
172 }
173
174 GScanner*
175 g_scanner_new (const GScannerConfig *config_templ)
176 {
177 GScanner *scanner;
178
179 if (!config_templ)
180 config_templ = &g_scanner_config_template;
181
182 scanner = g_new0 (GScanner, 1);
183
184 scanner->user_data = NULL;
185 scanner->max_parse_errors = 1;
186 scanner->parse_errors = 0;
187 scanner->input_name = NULL;
188 g_datalist_init (&scanner->qdata);
189
190 scanner->config = g_new0 (GScannerConfig, 1);
191
192 scanner->config->case_sensitive = config_templ->case_sensitive;
193 scanner->config->cset_skip_characters = config_templ->cset_skip_characters;
194 if (!scanner->config->cset_skip_characters)
195 scanner->config->cset_skip_characters = "";
196 scanner->config->cset_identifier_first = config_templ->cset_identifier_first;
197 scanner->config->cset_identifier_nth = config_templ->cset_identifier_nth;
198 scanner->config->cpair_comment_single = config_templ->cpair_comment_single;
199 scanner->config->skip_comment_multi = config_templ->skip_comment_multi;
200 scanner->config->skip_comment_single = config_templ->skip_comment_single;
201 scanner->config->scan_comment_multi = config_templ->scan_comment_multi;
202 scanner->config->scan_identifier = config_templ->scan_identifier;
203 scanner->config->scan_identifier_1char = config_templ->scan_identifier_1char;
204 scanner->config->scan_identifier_NULL = config_templ->scan_identifier_NULL;
205 scanner->config->scan_symbols = config_templ->scan_symbols;
206 scanner->config->scan_binary = config_templ->scan_binary;
207 scanner->config->scan_octal = config_templ->scan_octal;
208 scanner->config->scan_float = config_templ->scan_float;
209 scanner->config->scan_hex = config_templ->scan_hex;
210 scanner->config->scan_hex_dollar = config_templ->scan_hex_dollar;
211 scanner->config->scan_string_sq = config_templ->scan_string_sq;
212 scanner->config->scan_string_dq = config_templ->scan_string_dq;
213 scanner->config->numbers_2_int = config_templ->numbers_2_int;
214 scanner->config->int_2_float = config_templ->int_2_float;
215 scanner->config->identifier_2_string = config_templ->identifier_2_string;
216 scanner->config->char_2_token = config_templ->char_2_token;
217 scanner->config->symbol_2_token = config_templ->symbol_2_token;
218 scanner->config->scope_0_fallback = config_templ->scope_0_fallback;
219 scanner->config->store_int64 = config_templ->store_int64;
220
221 scanner->token = G_TOKEN_NONE;
222 scanner->value.v_int64 = 0;
223 scanner->line = 1;
224 scanner->position = 0;
225
226 scanner->next_token = G_TOKEN_NONE;
227 scanner->next_value.v_int64 = 0;
228 scanner->next_line = 1;
229 scanner->next_position = 0;
230
231 scanner->symbol_table = g_hash_table_new (g_scanner_key_hash, g_scanner_key_equal);
232 scanner->input_fd = -1;
233 scanner->text = NULL;
234 scanner->text_end = NULL;
235 scanner->buffer = NULL;
236 scanner->scope_id = 0;
237
238 scanner->msg_handler = g_scanner_msg_handler;
239
240 return scanner;
241 }
242
243 static inline void
244 g_scanner_free_value (GTokenType *token_p,
245 GTokenValue *value_p)
246 {
247 switch (*token_p)
248 {
249 case G_TOKEN_STRING:
250 case G_TOKEN_IDENTIFIER:
251 case G_TOKEN_IDENTIFIER_NULL:
252 case G_TOKEN_COMMENT_SINGLE:
253 case G_TOKEN_COMMENT_MULTI:
254 g_free (value_p->v_string);
255 break;
256
257 default:
258 break;
259 }
260
261 *token_p = G_TOKEN_NONE;
262 }
263
264 static void
265 g_scanner_destroy_symbol_table_entry (gpointer _key,
266 gpointer _value,
267 gpointer _data)
268 {
269 GScannerKey *key = _key;
270
271 g_free (key->symbol);
272 g_free (key);
273 }
274
275 void
276 g_scanner_destroy (GScanner *scanner)
277 {
278 g_return_if_fail (scanner != NULL);
279
280 g_datalist_clear (&scanner->qdata);
281 g_hash_table_foreach (scanner->symbol_table,
282 g_scanner_destroy_symbol_table_entry, NULL);
283 g_hash_table_destroy (scanner->symbol_table);
284 g_scanner_free_value (&scanner->token, &scanner->value);
285 g_scanner_free_value (&scanner->next_token, &scanner->next_value);
286 g_free (scanner->config);
287 g_free (scanner->buffer);
288 g_free (scanner);
289 }
290
291 static void
292 g_scanner_msg_handler (GScanner *scanner,
293 gchar *message,
294 gboolean is_error)
295 {
296 g_return_if_fail (scanner != NULL);
297
298 _g_fprintf (stderr, "%s:%d: ",
299 scanner->input_name ? scanner->input_name : "<memory>",
300 scanner->line);
301 if (is_error)
302 _g_fprintf (stderr, "error: ");
303 _g_fprintf (stderr, "%s\n", message);
304 }
305
306 void
307 g_scanner_error (GScanner *scanner,
308 const gchar *format,
309 ...)
310 {
311 g_return_if_fail (scanner != NULL);
312 g_return_if_fail (format != NULL);
313
314 scanner->parse_errors++;
315
316 if (scanner->msg_handler)
317 {
318 va_list args;
319 gchar *string;
320
321 va_start (args, format);
322 string = g_strdup_vprintf (format, args);
323 va_end (args);
324
325 scanner->msg_handler (scanner, string, TRUE);
326
327 g_free (string);
328 }
329 }
330
331 void
332 g_scanner_warn (GScanner *scanner,
333 const gchar *format,
334 ...)
335 {
336 g_return_if_fail (scanner != NULL);
337 g_return_if_fail (format != NULL);
338
339 if (scanner->msg_handler)
340 {
341 va_list args;
342 gchar *string;
343
344 va_start (args, format);
345 string = g_strdup_vprintf (format, args);
346 va_end (args);
347
348 scanner->msg_handler (scanner, string, FALSE);
349
350 g_free (string);
351 }
352 }
353
354 static gboolean
355 g_scanner_key_equal (gconstpointer v1,
356 gconstpointer v2)
357 {
358 const GScannerKey *key1 = v1;
359 const GScannerKey *key2 = v2;
360
361 return (key1->scope_id == key2->scope_id) && (strcmp (key1->symbol, key2->symbol) == 0);
362 }
363
364 static guint
365 g_scanner_key_hash (gconstpointer v)
366 {
367 const GScannerKey *key = v;
368 gchar *c;
369 guint h;
370
371 h = key->scope_id;
372 for (c = key->symbol; *c; c++)
373 h = (h << 5) - h + *c;
374
375 return h;
376 }
377
378 static inline GScannerKey*
379 g_scanner_lookup_internal (GScanner *scanner,
380 guint scope_id,
381 const gchar *symbol)
382 {
383 GScannerKey *key_p;
384 GScannerKey key;
385
386 key.scope_id = scope_id;
387
388 if (!scanner->config->case_sensitive)
389 {
390 gchar *d;
391 const gchar *c;
392
393 key.symbol = g_new (gchar, strlen (symbol) + 1);
394 for (d = key.symbol, c = symbol; *c; c++, d++)
395 *d = to_lower (*c);
396 *d = 0;
397 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
398 g_free (key.symbol);
399 }
400 else
401 {
402 key.symbol = (gchar*) symbol;
403 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
404 }
405
406 return key_p;
407 }
408
409 void
410 g_scanner_scope_add_symbol (GScanner *scanner,
411 guint scope_id,
412 const gchar *symbol,
413 gpointer value)
414 {
415 GScannerKey *key;
416
417 g_return_if_fail (scanner != NULL);
418 g_return_if_fail (symbol != NULL);
419
420 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
421
422 if (!key)
423 {
424 key = g_new (GScannerKey, 1);
425 key->scope_id = scope_id;
426 key->symbol = g_strdup (symbol);
427 key->value = value;
428 if (!scanner->config->case_sensitive)
429 {
430 gchar *c;
431
432 c = key->symbol;
433 while (*c != 0)
434 {
435 *c = to_lower (*c);
436 c++;
437 }
438 }
439 g_hash_table_insert (scanner->symbol_table, key, key);
440 }
441 else
442 key->value = value;
443 }
444
445 void
446 g_scanner_scope_remove_symbol (GScanner *scanner,
447 guint scope_id,
448 const gchar *symbol)
449 {
450 GScannerKey *key;
451
452 g_return_if_fail (scanner != NULL);
453 g_return_if_fail (symbol != NULL);
454
455 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
456
457 if (key)
458 {
459 g_hash_table_remove (scanner->symbol_table, key);
460 g_free (key->symbol);
461 g_free (key);
462 }
463 }
464
465 gpointer
466 g_scanner_lookup_symbol (GScanner *scanner,
467 const gchar *symbol)
468 {
469 GScannerKey *key;
470 guint scope_id;
471
472 g_return_val_if_fail (scanner != NULL, NULL);
473
474 if (!symbol)
475 return NULL;
476
477 scope_id = scanner->scope_id;
478 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
479 if (!key && scope_id && scanner->config->scope_0_fallback)
480 key = g_scanner_lookup_internal (scanner, 0, symbol);
481
482 if (key)
483 return key->value;
484 else
485 return NULL;
486 }
487
488 gpointer
489 g_scanner_scope_lookup_symbol (GScanner *scanner,
490 guint scope_id,
491 const gchar *symbol)
492 {
493 GScannerKey *key;
494
495 g_return_val_if_fail (scanner != NULL, NULL);
496
497 if (!symbol)
498 return NULL;
499
500 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
501
502 if (key)
503 return key->value;
504 else
505 return NULL;
506 }
507
508 guint
509 g_scanner_set_scope (GScanner *scanner,
510 guint scope_id)
511 {
512 guint old_scope_id;
513
514 g_return_val_if_fail (scanner != NULL, 0);
515
516 old_scope_id = scanner->scope_id;
517 scanner->scope_id = scope_id;
518
519 return old_scope_id;
520 }
521
522 static void
523 g_scanner_foreach_internal (gpointer _key,
524 gpointer _value,
525 gpointer _user_data)
526 {
527 GScannerKey *key;
528 gpointer *d;
529 GHFunc func;
530 gpointer user_data;
531 guint *scope_id;
532
533 d = _user_data;
534 func = (GHFunc) d[0];
535 user_data = d[1];
536 scope_id = d[2];
537 key = _value;
538
539 if (key->scope_id == *scope_id)
540 func (key->symbol, key->value, user_data);
541 }
542
543 void
544 g_scanner_scope_foreach_symbol (GScanner *scanner,
545 guint scope_id,
546 GHFunc func,
547 gpointer user_data)
548 {
549 gpointer d[3];
550
551 g_return_if_fail (scanner != NULL);
552
553 d[0] = (gpointer) func;
554 d[1] = user_data;
555 d[2] = &scope_id;
556
557 g_hash_table_foreach (scanner->symbol_table, g_scanner_foreach_internal, d);
558 }
559
560 GTokenType
561 g_scanner_peek_next_token (GScanner *scanner)
562 {
563 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
564
565 if (scanner->next_token == G_TOKEN_NONE)
566 {
567 scanner->next_line = scanner->line;
568 scanner->next_position = scanner->position;
569 g_scanner_get_token_i (scanner,
570 &scanner->next_token,
571 &scanner->next_value,
572 &scanner->next_line,
573 &scanner->next_position);
574 }
575
576 return scanner->next_token;
577 }
578
579 GTokenType
580 g_scanner_get_next_token (GScanner *scanner)
581 {
582 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
583
584 if (scanner->next_token != G_TOKEN_NONE)
585 {
586 g_scanner_free_value (&scanner->token, &scanner->value);
587
588 scanner->token = scanner->next_token;
589 scanner->value = scanner->next_value;
590 scanner->line = scanner->next_line;
591 scanner->position = scanner->next_position;
592 scanner->next_token = G_TOKEN_NONE;
593 }
594 else
595 g_scanner_get_token_i (scanner,
596 &scanner->token,
597 &scanner->value,
598 &scanner->line,
599 &scanner->position);
600
601 return scanner->token;
602 }
603
604 GTokenType
605 g_scanner_cur_token (GScanner *scanner)
606 {
607 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
608
609 return scanner->token;
610 }
611
612 GTokenValue
613 g_scanner_cur_value (GScanner *scanner)
614 {
615 GTokenValue v;
616
617 v.v_int64 = 0;
618
619 g_return_val_if_fail (scanner != NULL, v);
620
621 /* MSC isn't capable of handling return scanner->value; ? */
622
623 v = scanner->value;
624
625 return v;
626 }
627
628 guint
629 g_scanner_cur_line (GScanner *scanner)
630 {
631 g_return_val_if_fail (scanner != NULL, 0);
632
633 return scanner->line;
634 }
635
636 guint
637 g_scanner_cur_position (GScanner *scanner)
638 {
639 g_return_val_if_fail (scanner != NULL, 0);
640
641 return scanner->position;
642 }
643
644 gboolean
645 g_scanner_eof (GScanner *scanner)
646 {
647 g_return_val_if_fail (scanner != NULL, TRUE);
648
649 return scanner->token == G_TOKEN_EOF || scanner->token == G_TOKEN_ERROR;
650 }
651
652 void
653 g_scanner_input_file (GScanner *scanner,
654 gint input_fd)
655 {
656 g_return_if_fail (scanner != NULL);
657 g_return_if_fail (input_fd >= 0);
658
659 if (scanner->input_fd >= 0)
660 g_scanner_sync_file_offset (scanner);
661
662 scanner->token = G_TOKEN_NONE;
663 scanner->value.v_int64 = 0;
664 scanner->line = 1;
665 scanner->position = 0;
666 scanner->next_token = G_TOKEN_NONE;
667
668 scanner->input_fd = input_fd;
669 scanner->text = NULL;
670 scanner->text_end = NULL;
671
672 if (!scanner->buffer)
673 scanner->buffer = g_new (gchar, READ_BUFFER_SIZE + 1);
674 }
675
676 void
677 g_scanner_input_text (GScanner *scanner,
678 const gchar *text,
679 guint text_len)
680 {
681 g_return_if_fail (scanner != NULL);
682 if (text_len)
683 g_return_if_fail (text != NULL);
684 else
685 text = NULL;
686
687 if (scanner->input_fd >= 0)
688 g_scanner_sync_file_offset (scanner);
689
690 scanner->token = G_TOKEN_NONE;
691 scanner->value.v_int64 = 0;
692 scanner->line = 1;
693 scanner->position = 0;
694 scanner->next_token = G_TOKEN_NONE;
695
696 scanner->input_fd = -1;
697 scanner->text = text;
698 scanner->text_end = text + text_len;
699
700 if (scanner->buffer)
701 {
702 g_free (scanner->buffer);
703 scanner->buffer = NULL;
704 }
705 }
706
707 static guchar
708 g_scanner_peek_next_char (GScanner *scanner)
709 {
710 if (scanner->text < scanner->text_end)
711 {
712 return *scanner->text;
713 }
714 else if (scanner->input_fd >= 0)
715 {
716 gint count;
717 gchar *buffer;
718
719 buffer = scanner->buffer;
720 do
721 {
722 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
723 }
724 while (count == -1 && (errno == EINTR || errno == EAGAIN));
725
726 if (count < 1)
727 {
728 scanner->input_fd = -1;
729
730 return 0;
731 }
732 else
733 {
734 scanner->text = buffer;
735 scanner->text_end = buffer + count;
736
737 return *buffer;
738 }
739 }
740 else
741 return 0;
742 }
743
744 void
745 g_scanner_sync_file_offset (GScanner *scanner)
746 {
747 g_return_if_fail (scanner != NULL);
748
749 /* for file input, rewind the filedescriptor to the current
750 * buffer position and blow the file read ahead buffer. useful
751 * for third party uses of our file descriptor, which hooks
752 * onto the current scanning position.
753 */
754
755 if (scanner->input_fd >= 0 && scanner->text_end > scanner->text)
756 {
757 gint buffered;
758
759 buffered = scanner->text_end - scanner->text;
760 if (lseek (scanner->input_fd, - buffered, SEEK_CUR) >= 0)
761 {
762 /* we succeeded, blow our buffer's contents now */
763 scanner->text = NULL;
764 scanner->text_end = NULL;
765 }
766 else
767 errno = 0;
768 }
769 }
770
771 static guchar
772 g_scanner_get_char (GScanner *scanner,
773 guint *line_p,
774 guint *position_p)
775 {
776 guchar fchar;
777
778 if (scanner->text < scanner->text_end)
779 fchar = *(scanner->text++);
780 else if (scanner->input_fd >= 0)
781 {
782 gint count;
783 gchar *buffer;
784
785 buffer = scanner->buffer;
786 do
787 {
788 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
789 }
790 while (count == -1 && (errno == EINTR || errno == EAGAIN));
791
792 if (count < 1)
793 {
794 scanner->input_fd = -1;
795 fchar = 0;
796 }
797 else
798 {
799 scanner->text = buffer + 1;
800 scanner->text_end = buffer + count;
801 fchar = *buffer;
802 if (!fchar)
803 {
804 g_scanner_sync_file_offset (scanner);
805 scanner->text_end = scanner->text;
806 scanner->input_fd = -1;
807 }
808 }
809 }
810 else
811 fchar = 0;
812
813 if (fchar == '\n')
814 {
815 (*position_p) = 0;
816 (*line_p)++;
817 }
818 else if (fchar)
819 {
820 (*position_p)++;
821 }
822
823 return fchar;
824 }
825
826 void
827 g_scanner_unexp_token (GScanner *scanner,
828 GTokenType expected_token,
829 const gchar *identifier_spec,
830 const gchar *symbol_spec,
831 const gchar *symbol_name,
832 const gchar *message,
833 gint is_error)
834 {
835 gchar *token_string;
836 guint token_string_len;
837 gchar *expected_string;
838 guint expected_string_len;
839 gchar *message_prefix;
840 gboolean print_unexp;
841 void (*msg_handler) (GScanner*, const gchar*, ...);
842
843 g_return_if_fail (scanner != NULL);
844
845 if (is_error)
846 msg_handler = g_scanner_error;
847 else
848 msg_handler = g_scanner_warn;
849
850 if (!identifier_spec)
851 identifier_spec = "identifier";
852 if (!symbol_spec)
853 symbol_spec = "symbol";
854
855 token_string_len = 56;
856 token_string = g_new (gchar, token_string_len + 1);
857 expected_string_len = 64;
858 expected_string = g_new (gchar, expected_string_len + 1);
859 print_unexp = TRUE;
860
861 switch (scanner->token)
862 {
863 case G_TOKEN_EOF:
864 _g_snprintf (token_string, token_string_len, "end of file");
865 break;
866
867 default:
868 if (scanner->token >= 1 && scanner->token <= 255)
869 {
870 if ((scanner->token >= ' ' && scanner->token <= '~') ||
871 strchr (scanner->config->cset_identifier_first, scanner->token) ||
872 strchr (scanner->config->cset_identifier_nth, scanner->token))
873 _g_snprintf (token_string, token_string_len, "character `%c'", scanner->token);
874 else
875 _g_snprintf (token_string, token_string_len, "character `\\%o'", scanner->token);
876 break;
877 }
878 else if (!scanner->config->symbol_2_token)
879 {
880 _g_snprintf (token_string, token_string_len, "(unknown) token <%d>", scanner->token);
881 break;
882 }
883 /* fall through */
884 case G_TOKEN_SYMBOL:
885 if (expected_token == G_TOKEN_SYMBOL ||
886 (scanner->config->symbol_2_token &&
887 expected_token > G_TOKEN_LAST))
888 print_unexp = FALSE;
889 if (symbol_name)
890 _g_snprintf (token_string,
891 token_string_len,
892 "%s%s `%s'",
893 print_unexp ? "" : "invalid ",
894 symbol_spec,
895 symbol_name);
896 else
897 _g_snprintf (token_string,
898 token_string_len,
899 "%s%s",
900 print_unexp ? "" : "invalid ",
901 symbol_spec);
902 break;
903
904 case G_TOKEN_ERROR:
905 print_unexp = FALSE;
906 expected_token = G_TOKEN_NONE;
907 switch (scanner->value.v_error)
908 {
909 case G_ERR_UNEXP_EOF:
910 _g_snprintf (token_string, token_string_len, "scanner: unexpected end of file");
911 break;
912
913 case G_ERR_UNEXP_EOF_IN_STRING:
914 _g_snprintf (token_string, token_string_len, "scanner: unterminated string constant");
915 break;
916
917 case G_ERR_UNEXP_EOF_IN_COMMENT:
918 _g_snprintf (token_string, token_string_len, "scanner: unterminated comment");
919 break;
920
921 case G_ERR_NON_DIGIT_IN_CONST:
922 _g_snprintf (token_string, token_string_len, "scanner: non digit in constant");
923 break;
924
925 case G_ERR_FLOAT_RADIX:
926 _g_snprintf (token_string, token_string_len, "scanner: invalid radix for floating constant");
927 break;
928
929 case G_ERR_FLOAT_MALFORMED:
930 _g_snprintf (token_string, token_string_len, "scanner: malformed floating constant");
931 break;
932
933 case G_ERR_DIGIT_RADIX:
934 _g_snprintf (token_string, token_string_len, "scanner: digit is beyond radix");
935 break;
936
937 case G_ERR_UNKNOWN:
938 default:
939 _g_snprintf (token_string, token_string_len, "scanner: unknown error");
940 break;
941 }
942 break;
943
944 case G_TOKEN_CHAR:
945 _g_snprintf (token_string, token_string_len, "character `%c'", scanner->value.v_char);
946 break;
947
948 case G_TOKEN_IDENTIFIER:
949 case G_TOKEN_IDENTIFIER_NULL:
950 if (expected_token == G_TOKEN_IDENTIFIER ||
951 expected_token == G_TOKEN_IDENTIFIER_NULL)
952 print_unexp = FALSE;
953 _g_snprintf (token_string,
954 token_string_len,
955 "%s%s `%s'",
956 print_unexp ? "" : "invalid ",
957 identifier_spec,
958 scanner->token == G_TOKEN_IDENTIFIER ? scanner->value.v_string : "null");
959 break;
960
961 case G_TOKEN_BINARY:
962 case G_TOKEN_OCTAL:
963 case G_TOKEN_INT:
964 case G_TOKEN_HEX:
965 if (scanner->config->store_int64)
966 _g_snprintf (token_string, token_string_len, "number `%" G_GUINT64_FORMAT "'", scanner->value.v_int64);
967 else
968 _g_snprintf (token_string, token_string_len, "number `%lu'", scanner->value.v_int);
969 break;
970
971 case G_TOKEN_FLOAT:
972 _g_snprintf (token_string, token_string_len, "number `%.3f'", scanner->value.v_float);
973 break;
974
975 case G_TOKEN_STRING:
976 if (expected_token == G_TOKEN_STRING)
977 print_unexp = FALSE;
978 _g_snprintf (token_string,
979 token_string_len,
980 "%s%sstring constant \"%s\"",
981 print_unexp ? "" : "invalid ",
982 scanner->value.v_string[0] == 0 ? "empty " : "",
983 scanner->value.v_string);
984 token_string[token_string_len - 2] = '"';
985 token_string[token_string_len - 1] = 0;
986 break;
987
988 case G_TOKEN_COMMENT_SINGLE:
989 case G_TOKEN_COMMENT_MULTI:
990 _g_snprintf (token_string, token_string_len, "comment");
991 break;
992
993 case G_TOKEN_NONE:
994 /* somehow the user's parsing code is screwed, there isn't much
995 * we can do about it.
996 * Note, a common case to trigger this is
997 * g_scanner_peek_next_token(); g_scanner_unexp_token();
998 * without an intermediate g_scanner_get_next_token().
999 */
1000 g_assert_not_reached ();
1001 break;
1002 }
1003
1004
1005 switch (expected_token)
1006 {
1007 gboolean need_valid;
1008 gchar *tstring;
1009 case G_TOKEN_EOF:
1010 _g_snprintf (expected_string, expected_string_len, "end of file");
1011 break;
1012 default:
1013 if (expected_token >= 1 && expected_token <= 255)
1014 {
1015 if ((expected_token >= ' ' && expected_token <= '~') ||
1016 strchr (scanner->config->cset_identifier_first, expected_token) ||
1017 strchr (scanner->config->cset_identifier_nth, expected_token))
1018 _g_snprintf (expected_string, expected_string_len, "character `%c'", expected_token);
1019 else
1020 _g_snprintf (expected_string, expected_string_len, "character `\\%o'", expected_token);
1021 break;
1022 }
1023 else if (!scanner->config->symbol_2_token)
1024 {
1025 _g_snprintf (expected_string, expected_string_len, "(unknown) token <%d>", expected_token);
1026 break;
1027 }
1028 /* fall through */
1029 case G_TOKEN_SYMBOL:
1030 need_valid = (scanner->token == G_TOKEN_SYMBOL ||
1031 (scanner->config->symbol_2_token &&
1032 scanner->token > G_TOKEN_LAST));
1033 _g_snprintf (expected_string,
1034 expected_string_len,
1035 "%s%s",
1036 need_valid ? "valid " : "",
1037 symbol_spec);
1038 /* FIXME: should we attempt to lookup the symbol_name for symbol_2_token? */
1039 break;
1040 case G_TOKEN_CHAR:
1041 _g_snprintf (expected_string, expected_string_len, "%scharacter",
1042 scanner->token == G_TOKEN_CHAR ? "valid " : "");
1043 break;
1044 case G_TOKEN_BINARY:
1045 tstring = "binary";
1046 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1047 scanner->token == expected_token ? "valid " : "", tstring);
1048 break;
1049 case G_TOKEN_OCTAL:
1050 tstring = "octal";
1051 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1052 scanner->token == expected_token ? "valid " : "", tstring);
1053 break;
1054 case G_TOKEN_INT:
1055 tstring = "integer";
1056 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1057 scanner->token == expected_token ? "valid " : "", tstring);
1058 break;
1059 case G_TOKEN_HEX:
1060 tstring = "hexadecimal";
1061 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1062 scanner->token == expected_token ? "valid " : "", tstring);
1063 break;
1064 case G_TOKEN_FLOAT:
1065 tstring = "float";
1066 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1067 scanner->token == expected_token ? "valid " : "", tstring);
1068 break;
1069 case G_TOKEN_STRING:
1070 _g_snprintf (expected_string,
1071 expected_string_len,
1072 "%sstring constant",
1073 scanner->token == G_TOKEN_STRING ? "valid " : "");
1074 break;
1075 case G_TOKEN_IDENTIFIER:
1076 case G_TOKEN_IDENTIFIER_NULL:
1077 need_valid = (scanner->token == G_TOKEN_IDENTIFIER_NULL ||
1078 scanner->token == G_TOKEN_IDENTIFIER);
1079 _g_snprintf (expected_string,
1080 expected_string_len,
1081 "%s%s",
1082 need_valid ? "valid " : "",
1083 identifier_spec);
1084 break;
1085 case G_TOKEN_COMMENT_SINGLE:
1086 tstring = "single-line";
1087 _g_snprintf (expected_string, expected_string_len, "%scomment (%s)",
1088 scanner->token == expected_token ? "valid " : "", tstring);
1089 break;
1090 case G_TOKEN_COMMENT_MULTI:
1091 tstring = "multi-line";
1092 _g_snprintf (expected_string, expected_string_len, "%scomment (%s)",
1093 scanner->token == expected_token ? "valid " : "", tstring);
1094 break;
1095 case G_TOKEN_NONE:
1096 case G_TOKEN_ERROR:
1097 /* this is handled upon printout */
1098 break;
1099 }
1100
1101 if (message && message[0] != 0)
1102 message_prefix = " - ";
1103 else
1104 {
1105 message_prefix = "";
1106 message = "";
1107 }
1108 if (expected_token == G_TOKEN_ERROR)
1109 {
1110 msg_handler (scanner,
1111 "failure around %s%s%s",
1112 token_string,
1113 message_prefix,
1114 message);
1115 }
1116 else if (expected_token == G_TOKEN_NONE)
1117 {
1118 if (print_unexp)
1119 msg_handler (scanner,
1120 "unexpected %s%s%s",
1121 token_string,
1122 message_prefix,
1123 message);
1124 else
1125 msg_handler (scanner,
1126 "%s%s%s",
1127 token_string,
1128 message_prefix,
1129 message);
1130 }
1131 else
1132 {
1133 if (print_unexp)
1134 msg_handler (scanner,
1135 "unexpected %s, expected %s%s%s",
1136 token_string,
1137 expected_string,
1138 message_prefix,
1139 message);
1140 else
1141 msg_handler (scanner,
1142 "%s, expected %s%s%s",
1143 token_string,
1144 expected_string,
1145 message_prefix,
1146 message);
1147 }
1148
1149 g_free (token_string);
1150 g_free (expected_string);
1151 }
1152
1153 static void
1154 g_scanner_get_token_i (GScanner *scanner,
1155 GTokenType *token_p,
1156 GTokenValue *value_p,
1157 guint *line_p,
1158 guint *position_p)
1159 {
1160 do
1161 {
1162 g_scanner_free_value (token_p, value_p);
1163 g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
1164 }
1165 while (((*token_p > 0 && *token_p < 256) &&
1166 strchr (scanner->config->cset_skip_characters, *token_p)) ||
1167 (*token_p == G_TOKEN_CHAR &&
1168 strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
1169 (*token_p == G_TOKEN_COMMENT_MULTI &&
1170 scanner->config->skip_comment_multi) ||
1171 (*token_p == G_TOKEN_COMMENT_SINGLE &&
1172 scanner->config->skip_comment_single));
1173
1174 switch (*token_p)
1175 {
1176 case G_TOKEN_IDENTIFIER:
1177 if (scanner->config->identifier_2_string)
1178 *token_p = G_TOKEN_STRING;
1179 break;
1180
1181 case G_TOKEN_SYMBOL:
1182 if (scanner->config->symbol_2_token)
1183 *token_p = (GTokenType) value_p->v_symbol;
1184 break;
1185
1186 case G_TOKEN_BINARY:
1187 case G_TOKEN_OCTAL:
1188 case G_TOKEN_HEX:
1189 if (scanner->config->numbers_2_int)
1190 *token_p = G_TOKEN_INT;
1191 break;
1192
1193 default:
1194 break;
1195 }
1196
1197 if (*token_p == G_TOKEN_INT &&
1198 scanner->config->int_2_float)
1199 {
1200 *token_p = G_TOKEN_FLOAT;
1201 if (scanner->config->store_int64)
1202 {
1203 #ifdef _MSC_VER
1204 /* work around error C2520, see gvaluetransform.c */
1205 value_p->v_float = (__int64)value_p->v_int64;
1206 #else
1207 value_p->v_float = value_p->v_int64;
1208 #endif
1209 }
1210 else
1211 value_p->v_float = value_p->v_int;
1212 }
1213
1214 errno = 0;
1215 }
1216
1217 static void
1218 g_scanner_get_token_ll (GScanner *scanner,
1219 GTokenType *token_p,
1220 GTokenValue *value_p,
1221 guint *line_p,
1222 guint *position_p)
1223 {
1224 GScannerConfig *config;
1225 GTokenType token;
1226 gboolean in_comment_multi;
1227 gboolean in_comment_single;
1228 gboolean in_string_sq;
1229 gboolean in_string_dq;
1230 GString *gstring;
1231 GTokenValue value;
1232 guchar ch;
1233
1234 config = scanner->config;
1235 (*value_p).v_int64 = 0;
1236
1237 if ((scanner->text >= scanner->text_end && scanner->input_fd < 0) ||
1238 scanner->token == G_TOKEN_EOF)
1239 {
1240 *token_p = G_TOKEN_EOF;
1241 return;
1242 }
1243
1244 in_comment_multi = FALSE;
1245 in_comment_single = FALSE;
1246 in_string_sq = FALSE;
1247 in_string_dq = FALSE;
1248 gstring = NULL;
1249
1250 do /* while (ch != 0) */
1251 {
1252 gboolean dotted_float = FALSE;
1253
1254 ch = g_scanner_get_char (scanner, line_p, position_p);
1255
1256 value.v_int64 = 0;
1257 token = G_TOKEN_NONE;
1258
1259 /* this is *evil*, but needed ;(
1260 * we first check for identifier first character, because it
1261 * might interfere with other key chars like slashes or numbers
1262 */
1263 if (config->scan_identifier &&
1264 ch && strchr (config->cset_identifier_first, ch))
1265 goto identifier_precedence;
1266
1267 switch (ch)
1268 {
1269 case 0:
1270 token = G_TOKEN_EOF;
1271 (*position_p)++;
1272 /* ch = 0; */
1273 break;
1274
1275 case '/':
1276 if (!config->scan_comment_multi ||
1277 g_scanner_peek_next_char (scanner) != '*')
1278 goto default_case;
1279 g_scanner_get_char (scanner, line_p, position_p);
1280 token = G_TOKEN_COMMENT_MULTI;
1281 in_comment_multi = TRUE;
1282 gstring = g_string_new (NULL);
1283 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1284 {
1285 if (ch == '*' && g_scanner_peek_next_char (scanner) == '/')
1286 {
1287 g_scanner_get_char (scanner, line_p, position_p);
1288 in_comment_multi = FALSE;
1289 break;
1290 }
1291 else
1292 gstring = g_string_append_c (gstring, ch);
1293 }
1294 ch = 0;
1295 break;
1296
1297 case '\'':
1298 if (!config->scan_string_sq)
1299 goto default_case;
1300 token = G_TOKEN_STRING;
1301 in_string_sq = TRUE;
1302 gstring = g_string_new (NULL);
1303 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1304 {
1305 if (ch == '\'')
1306 {
1307 in_string_sq = FALSE;
1308 break;
1309 }
1310 else
1311 gstring = g_string_append_c (gstring, ch);
1312 }
1313 ch = 0;
1314 break;
1315
1316 case '"':
1317 if (!config->scan_string_dq)
1318 goto default_case;
1319 token = G_TOKEN_STRING;
1320 in_string_dq = TRUE;
1321 gstring = g_string_new (NULL);
1322 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1323 {
1324 if (ch == '"')
1325 {
1326 in_string_dq = FALSE;
1327 break;
1328 }
1329 else
1330 {
1331 if (ch == '\\')
1332 {
1333 ch = g_scanner_get_char (scanner, line_p, position_p);
1334 switch (ch)
1335 {
1336 guint i;
1337 guint fchar;
1338
1339 case 0:
1340 break;
1341
1342 case '\\':
1343 gstring = g_string_append_c (gstring, '\\');
1344 break;
1345
1346 case 'n':
1347 gstring = g_string_append_c (gstring, '\n');
1348 break;
1349
1350 case 't':
1351 gstring = g_string_append_c (gstring, '\t');
1352 break;
1353
1354 case 'r':
1355 gstring = g_string_append_c (gstring, '\r');
1356 break;
1357
1358 case 'b':
1359 gstring = g_string_append_c (gstring, '\b');
1360 break;
1361
1362 case 'f':
1363 gstring = g_string_append_c (gstring, '\f');
1364 break;
1365
1366 case '0':
1367 case '1':
1368 case '2':
1369 case '3':
1370 case '4':
1371 case '5':
1372 case '6':
1373 case '7':
1374 i = ch - '0';
1375 fchar = g_scanner_peek_next_char (scanner);
1376 if (fchar >= '0' && fchar <= '7')
1377 {
1378 ch = g_scanner_get_char (scanner, line_p, position_p);
1379 i = i * 8 + ch - '0';
1380 fchar = g_scanner_peek_next_char (scanner);
1381 if (fchar >= '0' && fchar <= '7')
1382 {
1383 ch = g_scanner_get_char (scanner, line_p, position_p);
1384 i = i * 8 + ch - '0';
1385 }
1386 }
1387 gstring = g_string_append_c (gstring, i);
1388 break;
1389
1390 default:
1391 gstring = g_string_append_c (gstring, ch);
1392 break;
1393 }
1394 }
1395 else
1396 gstring = g_string_append_c (gstring, ch);
1397 }
1398 }
1399 ch = 0;
1400 break;
1401
1402 case '.':
1403 if (!config->scan_float)
1404 goto default_case;
1405 token = G_TOKEN_FLOAT;
1406 dotted_float = TRUE;
1407 ch = g_scanner_get_char (scanner, line_p, position_p);
1408 goto number_parsing;
1409
1410 case '$':
1411 if (!config->scan_hex_dollar)
1412 goto default_case;
1413 token = G_TOKEN_HEX;
1414 ch = g_scanner_get_char (scanner, line_p, position_p);
1415 goto number_parsing;
1416
1417 case '0':
1418 if (config->scan_octal)
1419 token = G_TOKEN_OCTAL;
1420 else
1421 token = G_TOKEN_INT;
1422 ch = g_scanner_peek_next_char (scanner);
1423 if (config->scan_hex && (ch == 'x' || ch == 'X'))
1424 {
1425 token = G_TOKEN_HEX;
1426 g_scanner_get_char (scanner, line_p, position_p);
1427 ch = g_scanner_get_char (scanner, line_p, position_p);
1428 if (ch == 0)
1429 {
1430 token = G_TOKEN_ERROR;
1431 value.v_error = G_ERR_UNEXP_EOF;
1432 (*position_p)++;
1433 break;
1434 }
1435 if (g_scanner_char_2_num (ch, 16) < 0)
1436 {
1437 token = G_TOKEN_ERROR;
1438 value.v_error = G_ERR_DIGIT_RADIX;
1439 ch = 0;
1440 break;
1441 }
1442 }
1443 else if (config->scan_binary && (ch == 'b' || ch == 'B'))
1444 {
1445 token = G_TOKEN_BINARY;
1446 g_scanner_get_char (scanner, line_p, position_p);
1447 ch = g_scanner_get_char (scanner, line_p, position_p);
1448 if (ch == 0)
1449 {
1450 token = G_TOKEN_ERROR;
1451 value.v_error = G_ERR_UNEXP_EOF;
1452 (*position_p)++;
1453 break;
1454 }
1455 if (g_scanner_char_2_num (ch, 10) < 0)
1456 {
1457 token = G_TOKEN_ERROR;
1458 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1459 ch = 0;
1460 break;
1461 }
1462 }
1463 else
1464 ch = '0';
1465 /* fall through */
1466 case '1':
1467 case '2':
1468 case '3':
1469 case '4':
1470 case '5':
1471 case '6':
1472 case '7':
1473 case '8':
1474 case '9':
1475 number_parsing:
1476 {
1477 gboolean in_number = TRUE;
1478 gchar *endptr;
1479
1480 if (token == G_TOKEN_NONE)
1481 token = G_TOKEN_INT;
1482
1483 gstring = g_string_new (dotted_float ? "0." : "");
1484 gstring = g_string_append_c (gstring, ch);
1485
1486 do /* while (in_number) */
1487 {
1488 gboolean is_E;
1489
1490 is_E = token == G_TOKEN_FLOAT && (ch == 'e' || ch == 'E');
1491
1492 ch = g_scanner_peek_next_char (scanner);
1493
1494 if (g_scanner_char_2_num (ch, 36) >= 0 ||
1495 (config->scan_float && ch == '.') ||
1496 (is_E && (ch == '+' || ch == '-')))
1497 {
1498 ch = g_scanner_get_char (scanner, line_p, position_p);
1499
1500 switch (ch)
1501 {
1502 case '.':
1503 if (token != G_TOKEN_INT && token != G_TOKEN_OCTAL)
1504 {
1505 value.v_error = token == G_TOKEN_FLOAT ? G_ERR_FLOAT_MALFORMED : G_ERR_FLOAT_RADIX;
1506 token = G_TOKEN_ERROR;
1507 in_number = FALSE;
1508 }
1509 else
1510 {
1511 token = G_TOKEN_FLOAT;
1512 gstring = g_string_append_c (gstring, ch);
1513 }
1514 break;
1515
1516 case '0':
1517 case '1':
1518 case '2':
1519 case '3':
1520 case '4':
1521 case '5':
1522 case '6':
1523 case '7':
1524 case '8':
1525 case '9':
1526 gstring = g_string_append_c (gstring, ch);
1527 break;
1528
1529 case '-':
1530 case '+':
1531 if (token != G_TOKEN_FLOAT)
1532 {
1533 token = G_TOKEN_ERROR;
1534 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1535 in_number = FALSE;
1536 }
1537 else
1538 gstring = g_string_append_c (gstring, ch);
1539 break;
1540
1541 case 'e':
1542 case 'E':
1543 if ((token != G_TOKEN_HEX && !config->scan_float) ||
1544 (token != G_TOKEN_HEX &&
1545 token != G_TOKEN_OCTAL &&
1546 token != G_TOKEN_FLOAT &&
1547 token != G_TOKEN_INT))
1548 {
1549 token = G_TOKEN_ERROR;
1550 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1551 in_number = FALSE;
1552 }
1553 else
1554 {
1555 if (token != G_TOKEN_HEX)
1556 token = G_TOKEN_FLOAT;
1557 gstring = g_string_append_c (gstring, ch);
1558 }
1559 break;
1560
1561 default:
1562 if (token != G_TOKEN_HEX)
1563 {
1564 token = G_TOKEN_ERROR;
1565 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1566 in_number = FALSE;
1567 }
1568 else
1569 gstring = g_string_append_c (gstring, ch);
1570 break;
1571 }
1572 }
1573 else
1574 in_number = FALSE;
1575 }
1576 while (in_number);
1577
1578 endptr = NULL;
1579 if (token == G_TOKEN_FLOAT)
1580 value.v_float = g_strtod (gstring->str, &endptr);
1581 else
1582 {
1583 guint64 ui64 = 0;
1584 switch (token)
1585 {
1586 case G_TOKEN_BINARY:
1587 ui64 = g_ascii_strtoull (gstring->str, &endptr, 2);
1588 break;
1589 case G_TOKEN_OCTAL:
1590 ui64 = g_ascii_strtoull (gstring->str, &endptr, 8);
1591 break;
1592 case G_TOKEN_INT:
1593 ui64 = g_ascii_strtoull (gstring->str, &endptr, 10);
1594 break;
1595 case G_TOKEN_HEX:
1596 ui64 = g_ascii_strtoull (gstring->str, &endptr, 16);
1597 break;
1598 default: ;
1599 }
1600 if (scanner->config->store_int64)
1601 value.v_int64 = ui64;
1602 else
1603 value.v_int = ui64;
1604 }
1605 if (endptr && *endptr)
1606 {
1607 token = G_TOKEN_ERROR;
1608 if (*endptr == 'e' || *endptr == 'E')
1609 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1610 else
1611 value.v_error = G_ERR_DIGIT_RADIX;
1612 }
1613 g_string_free (gstring, TRUE);
1614 gstring = NULL;
1615 ch = 0;
1616 } /* number_parsing:... */
1617 break;
1618
1619 default:
1620 default_case:
1621 {
1622 if (config->cpair_comment_single &&
1623 ch == config->cpair_comment_single[0])
1624 {
1625 token = G_TOKEN_COMMENT_SINGLE;
1626 in_comment_single = TRUE;
1627 gstring = g_string_new (NULL);
1628 ch = g_scanner_get_char (scanner, line_p, position_p);
1629 while (ch != 0)
1630 {
1631 if (ch == config->cpair_comment_single[1])
1632 {
1633 in_comment_single = FALSE;
1634 ch = 0;
1635 break;
1636 }
1637
1638 gstring = g_string_append_c (gstring, ch);
1639 ch = g_scanner_get_char (scanner, line_p, position_p);
1640 }
1641 /* ignore a missing newline at EOF for single line comments */
1642 if (in_comment_single &&
1643 config->cpair_comment_single[1] == '\n')
1644 in_comment_single = FALSE;
1645 }
1646 else if (config->scan_identifier && ch &&
1647 strchr (config->cset_identifier_first, ch))
1648 {
1649 identifier_precedence:
1650
1651 if (config->cset_identifier_nth && ch &&
1652 strchr (config->cset_identifier_nth,
1653 g_scanner_peek_next_char (scanner)))
1654 {
1655 token = G_TOKEN_IDENTIFIER;
1656 gstring = g_string_new (NULL);
1657 gstring = g_string_append_c (gstring, ch);
1658 do
1659 {
1660 ch = g_scanner_get_char (scanner, line_p, position_p);
1661 gstring = g_string_append_c (gstring, ch);
1662 ch = g_scanner_peek_next_char (scanner);
1663 }
1664 while (ch && strchr (config->cset_identifier_nth, ch));
1665 ch = 0;
1666 }
1667 else if (config->scan_identifier_1char)
1668 {
1669 token = G_TOKEN_IDENTIFIER;
1670 value.v_identifier = g_new0 (gchar, 2);
1671 value.v_identifier[0] = ch;
1672 ch = 0;
1673 }
1674 }
1675 if (ch)
1676 {
1677 if (config->char_2_token)
1678 token = ch;
1679 else
1680 {
1681 token = G_TOKEN_CHAR;
1682 value.v_char = ch;
1683 }
1684 ch = 0;
1685 }
1686 } /* default_case:... */
1687 break;
1688 }
1689 g_assert (ch == 0 && token != G_TOKEN_NONE); /* paranoid */
1690 }
1691 while (ch != 0);
1692
1693 if (in_comment_multi || in_comment_single ||
1694 in_string_sq || in_string_dq)
1695 {
1696 token = G_TOKEN_ERROR;
1697 if (gstring)
1698 {
1699 g_string_free (gstring, TRUE);
1700 gstring = NULL;
1701 }
1702 (*position_p)++;
1703 if (in_comment_multi || in_comment_single)
1704 value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
1705 else /* (in_string_sq || in_string_dq) */
1706 value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
1707 }
1708
1709 if (gstring)
1710 {
1711 value.v_string = g_string_free (gstring, FALSE);
1712 gstring = NULL;
1713 }
1714
1715 if (token == G_TOKEN_IDENTIFIER)
1716 {
1717 if (config->scan_symbols)
1718 {
1719 GScannerKey *key;
1720 guint scope_id;
1721
1722 scope_id = scanner->scope_id;
1723 key = g_scanner_lookup_internal (scanner, scope_id, value.v_identifier);
1724 if (!key && scope_id && scanner->config->scope_0_fallback)
1725 key = g_scanner_lookup_internal (scanner, 0, value.v_identifier);
1726
1727 if (key)
1728 {
1729 g_free (value.v_identifier);
1730 token = G_TOKEN_SYMBOL;
1731 value.v_symbol = key->value;
1732 }
1733 }
1734
1735 if (token == G_TOKEN_IDENTIFIER &&
1736 config->scan_identifier_NULL &&
1737 strlen (value.v_identifier) == 4)
1738 {
1739 gchar *null_upper = "NULL";
1740 gchar *null_lower = "null";
1741
1742 if (scanner->config->case_sensitive)
1743 {
1744 if (value.v_identifier[0] == null_upper[0] &&
1745 value.v_identifier[1] == null_upper[1] &&
1746 value.v_identifier[2] == null_upper[2] &&
1747 value.v_identifier[3] == null_upper[3])
1748 token = G_TOKEN_IDENTIFIER_NULL;
1749 }
1750 else
1751 {
1752 if ((value.v_identifier[0] == null_upper[0] ||
1753 value.v_identifier[0] == null_lower[0]) &&
1754 (value.v_identifier[1] == null_upper[1] ||
1755 value.v_identifier[1] == null_lower[1]) &&
1756 (value.v_identifier[2] == null_upper[2] ||
1757 value.v_identifier[2] == null_lower[2]) &&
1758 (value.v_identifier[3] == null_upper[3] ||
1759 value.v_identifier[3] == null_lower[3]))
1760 token = G_TOKEN_IDENTIFIER_NULL;
1761 }
1762 }
1763 }
1764
1765 *token_p = token;
1766 *value_p = value;
1767 }
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