1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * GScanner: Flexible lexical scanner for general purpose.
5 * Copyright (C) 1997, 1998 Tim Janik
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library 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.
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 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library 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.
24 * Modified by the GLib Team and others 1997-1999. 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/.
34 #define __gscanner_c__
49 #include <sys/types.h> /* needed for sys/stat.h */
52 #include <io.h> /* For _read() */
56 #define to_lower(c) ( \
58 ( (((guchar)(c))>='A' && ((guchar)(c))<='Z') * ('a'-'A') ) | \
59 ( (((guchar)(c))>=192 && ((guchar)(c))<=214) * (224-192) ) | \
60 ( (((guchar)(c))>=216 && ((guchar)(c))<=222) * (248-216) ) | \
64 #define READ_BUFFER_SIZE (4000)
67 /* --- typedefs --- */
68 typedef struct _GScannerKey GScannerKey;
79 /* --- variables --- */
80 static GScannerConfig g_scanner_config_template =
84 ) /* cset_skip_characters */,
89 ) /* cset_identifier_first */,
96 ) /* cset_identifier_nth */,
97 ( "#\n" ) /* cpair_comment_single */,
99 FALSE /* case_sensitive */,
101 TRUE /* skip_comment_multi */,
102 TRUE /* skip_comment_single */,
103 TRUE /* scan_comment_multi */,
104 TRUE /* scan_identifier */,
105 FALSE /* scan_identifier_1char */,
106 FALSE /* scan_identifier_NULL */,
107 TRUE /* scan_symbols */,
108 FALSE /* scan_binary */,
109 TRUE /* scan_octal */,
110 TRUE /* scan_float */,
112 FALSE /* scan_hex_dollar */,
113 TRUE /* scan_string_sq */,
114 TRUE /* scan_string_dq */,
115 TRUE /* numbers_2_int */,
116 FALSE /* int_2_float */,
117 FALSE /* identifier_2_string */,
118 TRUE /* char_2_token */,
119 FALSE /* symbol_2_token */,
120 FALSE /* scope_0_fallback */,
124 /* --- prototypes --- */
126 GScannerKey* g_scanner_lookup_internal (GScanner *scanner,
128 const gchar *symbol);
129 static gint g_scanner_key_equal (gconstpointer v1,
131 static guint g_scanner_key_hash (gconstpointer v);
132 static void g_scanner_get_token_ll (GScanner *scanner,
134 GTokenValue *value_p,
137 static void g_scanner_get_token_i (GScanner *scanner,
139 GTokenValue *value_p,
143 static guchar g_scanner_peek_next_char (GScanner *scanner);
144 static guchar g_scanner_get_char (GScanner *scanner,
147 static void g_scanner_msg_handler (GScanner *scanner,
152 /* --- functions --- */
154 g_scanner_char_2_num (guchar c,
157 if (c >= '0' && c <= '9')
159 else if (c >= 'A' && c <= 'Z')
161 else if (c >= 'a' && c <= 'z')
173 g_scanner_new (GScannerConfig *config_templ)
178 config_templ = &g_scanner_config_template;
180 scanner = g_new0 (GScanner, 1);
182 scanner->user_data = NULL;
183 scanner->max_parse_errors = 0;
184 scanner->parse_errors = 0;
185 scanner->input_name = NULL;
186 scanner->derived_data = NULL;
188 scanner->config = g_new0 (GScannerConfig, 1);
190 scanner->config->case_sensitive = config_templ->case_sensitive;
191 scanner->config->cset_skip_characters = config_templ->cset_skip_characters;
192 if (!scanner->config->cset_skip_characters)
193 scanner->config->cset_skip_characters = "";
194 scanner->config->cset_identifier_first= config_templ->cset_identifier_first;
195 scanner->config->cset_identifier_nth = config_templ->cset_identifier_nth;
196 scanner->config->cpair_comment_single = config_templ->cpair_comment_single;
197 scanner->config->skip_comment_multi = config_templ->skip_comment_multi;
198 scanner->config->skip_comment_single = config_templ->skip_comment_single;
199 scanner->config->scan_comment_multi = config_templ->scan_comment_multi;
200 scanner->config->scan_identifier = config_templ->scan_identifier;
201 scanner->config->scan_identifier_1char= config_templ->scan_identifier_1char;
202 scanner->config->scan_identifier_NULL = config_templ->scan_identifier_NULL;
203 scanner->config->scan_symbols = config_templ->scan_symbols;
204 scanner->config->scan_binary = config_templ->scan_binary;
205 scanner->config->scan_octal = config_templ->scan_octal;
206 scanner->config->scan_float = config_templ->scan_float;
207 scanner->config->scan_hex = config_templ->scan_hex;
208 scanner->config->scan_hex_dollar = config_templ->scan_hex_dollar;
209 scanner->config->scan_string_sq = config_templ->scan_string_sq;
210 scanner->config->scan_string_dq = config_templ->scan_string_dq;
211 scanner->config->numbers_2_int = config_templ->numbers_2_int;
212 scanner->config->int_2_float = config_templ->int_2_float;
213 scanner->config->identifier_2_string = config_templ->identifier_2_string;
214 scanner->config->char_2_token = config_templ->char_2_token;
215 scanner->config->symbol_2_token = config_templ->symbol_2_token;
216 scanner->config->scope_0_fallback = config_templ->scope_0_fallback;
218 scanner->token = G_TOKEN_NONE;
219 scanner->value.v_int = 0;
221 scanner->position = 0;
223 scanner->next_token = G_TOKEN_NONE;
224 scanner->next_value.v_int = 0;
225 scanner->next_line = 1;
226 scanner->next_position = 0;
228 scanner->symbol_table = g_hash_table_new (g_scanner_key_hash, g_scanner_key_equal);
229 scanner->input_fd = -1;
230 scanner->text = NULL;
231 scanner->text_end = NULL;
232 scanner->buffer = NULL;
233 scanner->scope_id = 0;
235 scanner->msg_handler = g_scanner_msg_handler;
241 g_scanner_free_value (GTokenType *token_p,
242 GTokenValue *value_p)
247 case G_TOKEN_IDENTIFIER:
248 case G_TOKEN_IDENTIFIER_NULL:
249 case G_TOKEN_COMMENT_SINGLE:
250 case G_TOKEN_COMMENT_MULTI:
251 g_free (value_p->v_string);
258 *token_p = G_TOKEN_NONE;
262 g_scanner_destroy_symbol_table_entry (gpointer _key,
266 GScannerKey *key = _key;
268 g_free (key->symbol);
273 g_scanner_destroy (GScanner *scanner)
275 g_return_if_fail (scanner != NULL);
277 g_hash_table_foreach (scanner->symbol_table,
278 g_scanner_destroy_symbol_table_entry, NULL);
279 g_hash_table_destroy (scanner->symbol_table);
280 g_scanner_free_value (&scanner->token, &scanner->value);
281 g_scanner_free_value (&scanner->next_token, &scanner->next_value);
282 g_free (scanner->config);
283 g_free (scanner->buffer);
288 g_scanner_msg_handler (GScanner *scanner,
292 g_return_if_fail (scanner != NULL);
294 fprintf (stdout, "%s:%d: ", scanner->input_name, scanner->line);
296 fprintf (stdout, "error: ");
297 fprintf (stdout, "%s\n", message);
301 g_scanner_error (GScanner *scanner,
305 g_return_if_fail (scanner != NULL);
306 g_return_if_fail (format != NULL);
308 scanner->parse_errors++;
310 if (scanner->msg_handler)
315 va_start (args, format);
316 string = g_strdup_vprintf (format, args);
319 scanner->msg_handler (scanner, string, TRUE);
326 g_scanner_warn (GScanner *scanner,
330 g_return_if_fail (scanner != NULL);
331 g_return_if_fail (format != NULL);
333 if (scanner->msg_handler)
338 va_start (args, format);
339 string = g_strdup_vprintf (format, args);
342 scanner->msg_handler (scanner, string, FALSE);
349 g_scanner_key_equal (gconstpointer v1,
352 const GScannerKey *key1 = v1;
353 const GScannerKey *key2 = v2;
355 return (key1->scope_id == key2->scope_id) && (strcmp (key1->symbol, key2->symbol) == 0);
359 g_scanner_key_hash (gconstpointer v)
361 const GScannerKey *key = v;
366 for (c = key->symbol; *c; c++)
382 static inline GScannerKey*
383 g_scanner_lookup_internal (GScanner *scanner,
390 key.scope_id = scope_id;
392 if (!scanner->config->case_sensitive)
397 key.symbol = g_new (gchar, strlen (symbol) + 1);
398 for (d = key.symbol, c = symbol; *c; c++, d++)
401 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
406 key.symbol = (gchar*) symbol;
407 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
414 g_scanner_scope_add_symbol (GScanner *scanner,
421 g_return_if_fail (scanner != NULL);
422 g_return_if_fail (symbol != NULL);
424 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
428 key = g_new (GScannerKey, 1);
429 key->scope_id = scope_id;
430 key->symbol = g_strdup (symbol);
432 if (!scanner->config->case_sensitive)
443 g_hash_table_insert (scanner->symbol_table, key, key);
450 g_scanner_scope_remove_symbol (GScanner *scanner,
456 g_return_if_fail (scanner != NULL);
457 g_return_if_fail (symbol != NULL);
459 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
463 g_hash_table_remove (scanner->symbol_table, key);
464 g_free (key->symbol);
470 g_scanner_lookup_symbol (GScanner *scanner,
476 g_return_val_if_fail (scanner != NULL, NULL);
481 scope_id = scanner->scope_id;
482 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
483 if (!key && scope_id && scanner->config->scope_0_fallback)
484 key = g_scanner_lookup_internal (scanner, 0, symbol);
493 g_scanner_scope_lookup_symbol (GScanner *scanner,
499 g_return_val_if_fail (scanner != NULL, NULL);
504 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
513 g_scanner_set_scope (GScanner *scanner,
518 g_return_val_if_fail (scanner != NULL, 0);
520 old_scope_id = scanner->scope_id;
521 scanner->scope_id = scope_id;
527 g_scanner_foreach_internal (gpointer _key,
538 func = (GHFunc) d[0];
543 if (key->scope_id == *scope_id)
544 func (key->symbol, key->value, user_data);
548 g_scanner_scope_foreach_symbol (GScanner *scanner,
555 g_return_if_fail (scanner != NULL);
557 d[0] = (gpointer) func;
561 g_hash_table_foreach (scanner->symbol_table, g_scanner_foreach_internal, d);
565 g_scanner_freeze_symbol_table (GScanner *scanner)
567 g_return_if_fail (scanner != NULL);
569 g_hash_table_freeze (scanner->symbol_table);
573 g_scanner_thaw_symbol_table (GScanner *scanner)
575 g_return_if_fail (scanner != NULL);
577 g_hash_table_thaw (scanner->symbol_table);
581 g_scanner_peek_next_token (GScanner *scanner)
583 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
585 if (scanner->next_token == G_TOKEN_NONE)
587 scanner->next_line = scanner->line;
588 scanner->next_position = scanner->position;
589 g_scanner_get_token_i (scanner,
590 &scanner->next_token,
591 &scanner->next_value,
593 &scanner->next_position);
596 return scanner->next_token;
600 g_scanner_get_next_token (GScanner *scanner)
602 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
604 if (scanner->next_token != G_TOKEN_NONE)
606 g_scanner_free_value (&scanner->token, &scanner->value);
608 scanner->token = scanner->next_token;
609 scanner->value = scanner->next_value;
610 scanner->line = scanner->next_line;
611 scanner->position = scanner->next_position;
612 scanner->next_token = G_TOKEN_NONE;
615 g_scanner_get_token_i (scanner,
621 return scanner->token;
625 g_scanner_cur_token (GScanner *scanner)
627 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
629 return scanner->token;
633 g_scanner_cur_value (GScanner *scanner)
639 g_return_val_if_fail (scanner != NULL, v);
641 /* MSC isn't capable of handling return scanner->value; ? */
649 g_scanner_cur_line (GScanner *scanner)
651 g_return_val_if_fail (scanner != NULL, 0);
653 return scanner->line;
657 g_scanner_cur_position (GScanner *scanner)
659 g_return_val_if_fail (scanner != NULL, 0);
661 return scanner->position;
665 g_scanner_eof (GScanner *scanner)
667 g_return_val_if_fail (scanner != NULL, TRUE);
669 return scanner->token == G_TOKEN_EOF;
673 g_scanner_input_file (GScanner *scanner,
676 g_return_if_fail (scanner != NULL);
677 g_return_if_fail (input_fd >= 0);
679 if (scanner->input_fd >= 0)
680 g_scanner_sync_file_offset (scanner);
682 scanner->token = G_TOKEN_NONE;
683 scanner->value.v_int = 0;
685 scanner->position = 0;
686 scanner->next_token = G_TOKEN_NONE;
688 scanner->input_fd = input_fd;
689 scanner->text = NULL;
690 scanner->text_end = NULL;
692 if (!scanner->buffer)
693 scanner->buffer = g_new (gchar, READ_BUFFER_SIZE + 1);
697 g_scanner_input_text (GScanner *scanner,
701 g_return_if_fail (scanner != NULL);
703 g_return_if_fail (text != NULL);
707 if (scanner->input_fd >= 0)
708 g_scanner_sync_file_offset (scanner);
710 scanner->token = G_TOKEN_NONE;
711 scanner->value.v_int = 0;
713 scanner->position = 0;
714 scanner->next_token = G_TOKEN_NONE;
716 scanner->input_fd = -1;
717 scanner->text = text;
718 scanner->text_end = text + text_len;
722 g_free (scanner->buffer);
723 scanner->buffer = NULL;
728 g_scanner_peek_next_char (GScanner *scanner)
730 if (scanner->text < scanner->text_end)
732 return *scanner->text;
734 else if (scanner->input_fd >= 0)
739 buffer = scanner->buffer;
742 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
744 while (count == -1 && (errno == EINTR || errno == EAGAIN));
748 scanner->input_fd = -1;
754 scanner->text = buffer;
755 scanner->text_end = buffer + count;
765 g_scanner_sync_file_offset (GScanner *scanner)
767 g_return_if_fail (scanner != NULL);
769 /* for file input, rewind the filedescriptor to the current
770 * buffer position and blow the file read ahead buffer. usefull for
771 * third party uses of our filedescriptor, which hooks onto the current
775 if (scanner->input_fd >= 0 && scanner->text_end > scanner->text)
779 buffered = scanner->text_end - scanner->text;
780 if (lseek (scanner->input_fd, - buffered, SEEK_CUR) >= 0)
782 /* we succeeded, blow our buffer's contents now */
783 scanner->text = NULL;
784 scanner->text_end = NULL;
792 g_scanner_get_char (GScanner *scanner,
798 if (scanner->text < scanner->text_end)
799 fchar = *(scanner->text++);
800 else if (scanner->input_fd >= 0)
805 buffer = scanner->buffer;
808 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
810 while (count == -1 && (errno == EINTR || errno == EAGAIN));
814 scanner->input_fd = -1;
819 scanner->text = buffer + 1;
820 scanner->text_end = buffer + count;
824 g_scanner_sync_file_offset (scanner);
825 scanner->text_end = scanner->text;
826 scanner->input_fd = -1;
847 g_scanner_unexp_token (GScanner *scanner,
848 GTokenType expected_token,
849 const gchar *identifier_spec,
850 const gchar *symbol_spec,
851 const gchar *symbol_name,
852 const gchar *message,
856 guint token_string_len;
857 gchar *expected_string;
858 guint expected_string_len;
859 gchar *message_prefix;
860 gboolean print_unexp;
861 void (*msg_handler) (GScanner*, const gchar*, ...);
863 g_return_if_fail (scanner != NULL);
866 msg_handler = g_scanner_error;
868 msg_handler = g_scanner_warn;
870 if (!identifier_spec)
871 identifier_spec = "identifier";
873 symbol_spec = "symbol";
875 token_string_len = 56;
876 token_string = g_new (gchar, token_string_len + 1);
877 expected_string_len = 64;
878 expected_string = g_new (gchar, expected_string_len + 1);
881 switch (scanner->token)
884 g_snprintf (token_string, token_string_len, "end of file");
888 if (scanner->token >= 1 && scanner->token <= 255)
890 if ((scanner->token >= ' ' && scanner->token <= '~') ||
891 strchr (scanner->config->cset_identifier_first, scanner->token) ||
892 strchr (scanner->config->cset_identifier_nth, scanner->token))
893 g_snprintf (token_string, expected_string_len, "character `%c'", scanner->token);
895 g_snprintf (token_string, expected_string_len, "character `\\%o'", scanner->token);
898 else if (!scanner->config->symbol_2_token)
900 g_snprintf (token_string, token_string_len, "(unknown) token <%d>", scanner->token);
905 if (expected_token == G_TOKEN_SYMBOL ||
906 (scanner->config->symbol_2_token &&
907 expected_token > G_TOKEN_LAST))
910 g_snprintf (token_string,
913 print_unexp ? "" : "invalid ",
917 g_snprintf (token_string,
920 print_unexp ? "" : "invalid ",
926 expected_token = G_TOKEN_NONE;
927 switch (scanner->value.v_error)
929 case G_ERR_UNEXP_EOF:
930 g_snprintf (token_string, token_string_len, "scanner: unexpected end of file");
933 case G_ERR_UNEXP_EOF_IN_STRING:
934 g_snprintf (token_string, token_string_len, "scanner: unterminated string constant");
937 case G_ERR_UNEXP_EOF_IN_COMMENT:
938 g_snprintf (token_string, token_string_len, "scanner: unterminated comment");
941 case G_ERR_NON_DIGIT_IN_CONST:
942 g_snprintf (token_string, token_string_len, "scanner: non digit in constant");
945 case G_ERR_FLOAT_RADIX:
946 g_snprintf (token_string, token_string_len, "scanner: invalid radix for floating constant");
949 case G_ERR_FLOAT_MALFORMED:
950 g_snprintf (token_string, token_string_len, "scanner: malformed floating constant");
953 case G_ERR_DIGIT_RADIX:
954 g_snprintf (token_string, token_string_len, "scanner: digit is beyond radix");
959 g_snprintf (token_string, token_string_len, "scanner: unknown error");
965 g_snprintf (token_string, token_string_len, "character `%c'", scanner->value.v_char);
968 case G_TOKEN_IDENTIFIER:
969 case G_TOKEN_IDENTIFIER_NULL:
970 if (expected_token == G_TOKEN_IDENTIFIER ||
971 expected_token == G_TOKEN_IDENTIFIER_NULL)
973 g_snprintf (token_string,
976 print_unexp ? "" : "invalid ",
978 scanner->token == G_TOKEN_IDENTIFIER ? scanner->value.v_string : "null");
985 g_snprintf (token_string, token_string_len, "number `%ld'", scanner->value.v_int);
989 g_snprintf (token_string, token_string_len, "number `%.3f'", scanner->value.v_float);
993 if (expected_token == G_TOKEN_STRING)
995 g_snprintf (token_string,
997 "%s%sstring constant \"%s\"",
998 print_unexp ? "" : "invalid ",
999 scanner->value.v_string[0] == 0 ? "empty " : "",
1000 scanner->value.v_string);
1001 token_string[token_string_len - 2] = '"';
1002 token_string[token_string_len - 1] = 0;
1005 case G_TOKEN_COMMENT_SINGLE:
1006 case G_TOKEN_COMMENT_MULTI:
1007 g_snprintf (token_string, token_string_len, "comment");
1011 /* somehow the user's parsing code is screwed, there isn't much
1012 * we can do about it.
1013 * Note, a common case to trigger this is
1014 * g_scanner_peek_next_token(); g_scanner_unexp_token();
1015 * without an intermediate g_scanner_get_next_token().
1017 g_assert_not_reached ();
1022 switch (expected_token)
1024 gboolean need_valid;
1027 if (expected_token >= 1 && expected_token <= 255)
1029 if ((expected_token >= ' ' && expected_token <= '~') ||
1030 strchr (scanner->config->cset_identifier_first, expected_token) ||
1031 strchr (scanner->config->cset_identifier_nth, expected_token))
1032 g_snprintf (expected_string, expected_string_len, "character `%c'", expected_token);
1034 g_snprintf (expected_string, expected_string_len, "character `\\%o'", expected_token);
1037 else if (!scanner->config->symbol_2_token)
1039 g_snprintf (expected_string, expected_string_len, "(unknown) token <%d>", expected_token);
1043 case G_TOKEN_SYMBOL:
1044 need_valid = (scanner->token == G_TOKEN_SYMBOL ||
1045 (scanner->config->symbol_2_token &&
1046 scanner->token > G_TOKEN_LAST));
1047 g_snprintf (expected_string,
1048 expected_string_len,
1050 need_valid ? "valid " : "",
1052 /* FIXME: should we attempt to lookup the symbol_name for symbol_2_token? */
1056 g_snprintf (expected_string, expected_string_len, "number (integer)");
1060 g_snprintf (expected_string, expected_string_len, "number (float)");
1063 case G_TOKEN_STRING:
1064 g_snprintf (expected_string,
1065 expected_string_len,
1066 "%sstring constant",
1067 scanner->token == G_TOKEN_STRING ? "valid " : "");
1070 case G_TOKEN_IDENTIFIER:
1071 case G_TOKEN_IDENTIFIER_NULL:
1072 g_snprintf (expected_string,
1073 expected_string_len,
1075 (scanner->token == G_TOKEN_IDENTIFIER_NULL ||
1076 scanner->token == G_TOKEN_IDENTIFIER ? "valid " : ""),
1081 g_snprintf (expected_string, expected_string_len, "end of file");
1088 if (message && message[0] != 0)
1089 message_prefix = " - ";
1092 message_prefix = "";
1096 if (expected_token != G_TOKEN_NONE)
1099 msg_handler (scanner,
1100 "unexpected %s, expected %s%s%s",
1106 msg_handler (scanner,
1107 "%s, expected %s%s%s",
1116 msg_handler (scanner,
1117 "unexpected %s%s%s",
1122 msg_handler (scanner,
1129 g_free (token_string);
1130 g_free (expected_string);
1134 g_scanner_stat_mode (const gchar *filename)
1136 struct stat *stat_buf;
1139 stat_buf = g_new0 (struct stat, 1);
1141 lstat (filename, stat_buf);
1143 stat (filename, stat_buf);
1145 st_mode = stat_buf->st_mode;
1153 g_scanner_get_token_i (GScanner *scanner,
1154 GTokenType *token_p,
1155 GTokenValue *value_p,
1161 g_scanner_free_value (token_p, value_p);
1162 g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
1164 while (((*token_p > 0 && *token_p < 256) &&
1165 strchr (scanner->config->cset_skip_characters, *token_p)) ||
1166 (*token_p == G_TOKEN_CHAR &&
1167 strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
1168 (*token_p == G_TOKEN_COMMENT_MULTI &&
1169 scanner->config->skip_comment_multi) ||
1170 (*token_p == G_TOKEN_COMMENT_SINGLE &&
1171 scanner->config->skip_comment_single));
1175 case G_TOKEN_IDENTIFIER:
1176 if (scanner->config->identifier_2_string)
1177 *token_p = G_TOKEN_STRING;
1180 case G_TOKEN_SYMBOL:
1181 if (scanner->config->symbol_2_token)
1182 *token_p = (GTokenType) value_p->v_symbol;
1185 case G_TOKEN_BINARY:
1188 if (scanner->config->numbers_2_int)
1189 *token_p = G_TOKEN_INT;
1196 if (*token_p == G_TOKEN_INT &&
1197 scanner->config->int_2_float)
1199 *token_p = G_TOKEN_FLOAT;
1200 value_p->v_float = value_p->v_int;
1207 g_scanner_get_token_ll (GScanner *scanner,
1208 GTokenType *token_p,
1209 GTokenValue *value_p,
1213 GScannerConfig *config;
1215 gboolean in_comment_multi;
1216 gboolean in_comment_single;
1217 gboolean in_string_sq;
1218 gboolean in_string_dq;
1223 config = scanner->config;
1224 (*value_p).v_int = 0;
1226 if ((scanner->text >= scanner->text_end && scanner->input_fd < 0) ||
1227 scanner->token == G_TOKEN_EOF)
1229 *token_p = G_TOKEN_EOF;
1233 in_comment_multi = FALSE;
1234 in_comment_single = FALSE;
1235 in_string_sq = FALSE;
1236 in_string_dq = FALSE;
1239 do /* while (ch != 0) */
1241 gboolean dotted_float = FALSE;
1243 ch = g_scanner_get_char (scanner, line_p, position_p);
1246 token = G_TOKEN_NONE;
1248 /* this is *evil*, but needed ;(
1249 * we first check for identifier first character, because it
1250 * might interfere with other key chars like slashes or numbers
1252 if (config->scan_identifier &&
1253 ch && strchr (config->cset_identifier_first, ch))
1254 goto identifier_precedence;
1259 token = G_TOKEN_EOF;
1265 if (!config->scan_comment_multi ||
1266 g_scanner_peek_next_char (scanner) != '*')
1268 g_scanner_get_char (scanner, line_p, position_p);
1269 token = G_TOKEN_COMMENT_MULTI;
1270 in_comment_multi = TRUE;
1271 gstring = g_string_new ("");
1272 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1274 if (ch == '*' && g_scanner_peek_next_char (scanner) == '/')
1276 g_scanner_get_char (scanner, line_p, position_p);
1277 in_comment_multi = FALSE;
1281 gstring = g_string_append_c (gstring, ch);
1287 if (!config->scan_string_sq)
1289 token = G_TOKEN_STRING;
1290 in_string_sq = TRUE;
1291 gstring = g_string_new ("");
1292 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1296 in_string_sq = FALSE;
1300 gstring = g_string_append_c (gstring, ch);
1306 if (!config->scan_string_dq)
1308 token = G_TOKEN_STRING;
1309 in_string_dq = TRUE;
1310 gstring = g_string_new ("");
1311 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1315 in_string_dq = FALSE;
1322 ch = g_scanner_get_char (scanner, line_p, position_p);
1332 gstring = g_string_append_c (gstring, '\\');
1336 gstring = g_string_append_c (gstring, '\n');
1340 gstring = g_string_append_c (gstring, '\t');
1344 gstring = g_string_append_c (gstring, '\r');
1348 gstring = g_string_append_c (gstring, '\b');
1352 gstring = g_string_append_c (gstring, '\f');
1364 fchar = g_scanner_peek_next_char (scanner);
1365 if (fchar >= '0' && fchar <= '7')
1367 ch = g_scanner_get_char (scanner, line_p, position_p);
1368 i = i * 8 + ch - '0';
1369 fchar = g_scanner_peek_next_char (scanner);
1370 if (fchar >= '0' && fchar <= '7')
1372 ch = g_scanner_get_char (scanner, line_p, position_p);
1373 i = i * 8 + ch - '0';
1376 gstring = g_string_append_c (gstring, i);
1380 gstring = g_string_append_c (gstring, ch);
1385 gstring = g_string_append_c (gstring, ch);
1392 if (!config->scan_float)
1394 token = G_TOKEN_FLOAT;
1395 dotted_float = TRUE;
1396 ch = g_scanner_get_char (scanner, line_p, position_p);
1397 goto number_parsing;
1400 if (!config->scan_hex_dollar)
1402 token = G_TOKEN_HEX;
1403 ch = g_scanner_get_char (scanner, line_p, position_p);
1404 goto number_parsing;
1407 if (config->scan_octal)
1408 token = G_TOKEN_OCTAL;
1410 token = G_TOKEN_INT;
1411 ch = g_scanner_peek_next_char (scanner);
1412 if (config->scan_hex && (ch == 'x' || ch == 'X'))
1414 token = G_TOKEN_HEX;
1415 g_scanner_get_char (scanner, line_p, position_p);
1416 ch = g_scanner_get_char (scanner, line_p, position_p);
1419 token = G_TOKEN_ERROR;
1420 value.v_error = G_ERR_UNEXP_EOF;
1424 if (g_scanner_char_2_num (ch, 16) < 0)
1426 token = G_TOKEN_ERROR;
1427 value.v_error = G_ERR_DIGIT_RADIX;
1432 else if (config->scan_binary && (ch == 'b' || ch == 'B'))
1434 token = G_TOKEN_BINARY;
1435 g_scanner_get_char (scanner, line_p, position_p);
1436 ch = g_scanner_get_char (scanner, line_p, position_p);
1439 token = G_TOKEN_ERROR;
1440 value.v_error = G_ERR_UNEXP_EOF;
1444 if (g_scanner_char_2_num (ch, 10) < 0)
1446 token = G_TOKEN_ERROR;
1447 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1466 gboolean in_number = TRUE;
1469 if (token == G_TOKEN_NONE)
1470 token = G_TOKEN_INT;
1472 gstring = g_string_new (dotted_float ? "0." : "");
1473 gstring = g_string_append_c (gstring, ch);
1475 do /* while (in_number) */
1479 is_E = token == G_TOKEN_FLOAT && (ch == 'e' || ch == 'E');
1481 ch = g_scanner_peek_next_char (scanner);
1483 if (g_scanner_char_2_num (ch, 36) >= 0 ||
1484 (config->scan_float && ch == '.') ||
1485 (is_E && (ch == '+' || ch == '-')))
1487 ch = g_scanner_get_char (scanner, line_p, position_p);
1492 if (token != G_TOKEN_INT && token != G_TOKEN_OCTAL)
1494 value.v_error = token == G_TOKEN_FLOAT ? G_ERR_FLOAT_MALFORMED : G_ERR_FLOAT_RADIX;
1495 token = G_TOKEN_ERROR;
1500 token = G_TOKEN_FLOAT;
1501 gstring = g_string_append_c (gstring, ch);
1515 gstring = g_string_append_c (gstring, ch);
1520 if (token != G_TOKEN_FLOAT)
1522 token = G_TOKEN_ERROR;
1523 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1527 gstring = g_string_append_c (gstring, ch);
1532 if ((token != G_TOKEN_HEX && !config->scan_float) ||
1533 (token != G_TOKEN_HEX &&
1534 token != G_TOKEN_OCTAL &&
1535 token != G_TOKEN_FLOAT &&
1536 token != G_TOKEN_INT))
1538 token = G_TOKEN_ERROR;
1539 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1544 if (token != G_TOKEN_HEX)
1545 token = G_TOKEN_FLOAT;
1546 gstring = g_string_append_c (gstring, ch);
1551 if (token != G_TOKEN_HEX)
1553 token = G_TOKEN_ERROR;
1554 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1558 gstring = g_string_append_c (gstring, ch);
1570 case G_TOKEN_BINARY:
1571 value.v_binary = strtol (gstring->str, &endptr, 2);
1575 value.v_octal = strtol (gstring->str, &endptr, 8);
1579 value.v_int = strtol (gstring->str, &endptr, 10);
1583 value.v_float = g_strtod (gstring->str, &endptr);
1587 value.v_hex = strtol (gstring->str, &endptr, 16);
1593 if (endptr && *endptr)
1595 token = G_TOKEN_ERROR;
1596 if (*endptr == 'e' || *endptr == 'E')
1597 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1599 value.v_error = G_ERR_DIGIT_RADIX;
1601 g_string_free (gstring, TRUE);
1604 } /* number_parsing:... */
1610 if (config->cpair_comment_single &&
1611 ch == config->cpair_comment_single[0])
1613 token = G_TOKEN_COMMENT_SINGLE;
1614 in_comment_single = TRUE;
1615 gstring = g_string_new ("");
1616 while ((ch = g_scanner_get_char (scanner,
1620 if (ch == config->cpair_comment_single[1])
1622 in_comment_single = FALSE;
1627 gstring = g_string_append_c (gstring, ch);
1631 else if (config->scan_identifier && ch &&
1632 strchr (config->cset_identifier_first, ch))
1634 identifier_precedence:
1636 if (config->cset_identifier_nth && ch &&
1637 strchr (config->cset_identifier_nth,
1638 g_scanner_peek_next_char (scanner)))
1640 token = G_TOKEN_IDENTIFIER;
1641 gstring = g_string_new ("");
1642 gstring = g_string_append_c (gstring, ch);
1645 ch = g_scanner_get_char (scanner, line_p, position_p);
1646 gstring = g_string_append_c (gstring, ch);
1647 ch = g_scanner_peek_next_char (scanner);
1649 while (ch && strchr (config->cset_identifier_nth, ch));
1652 else if (config->scan_identifier_1char)
1654 token = G_TOKEN_IDENTIFIER;
1655 value.v_identifier = g_new0 (gchar, 2);
1656 value.v_identifier[0] = ch;
1662 if (config->char_2_token)
1666 token = G_TOKEN_CHAR;
1671 } /* default_case:... */
1674 g_assert (ch == 0 && token != G_TOKEN_NONE); /* paranoid */
1678 if (in_comment_multi || in_comment_single ||
1679 in_string_sq || in_string_dq)
1681 token = G_TOKEN_ERROR;
1684 g_string_free (gstring, TRUE);
1688 if (in_comment_multi || in_comment_single)
1689 value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
1690 else /* (in_string_sq || in_string_dq) */
1691 value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
1696 value.v_string = gstring->str;
1697 g_string_free (gstring, FALSE);
1701 if (token == G_TOKEN_IDENTIFIER)
1703 if (config->scan_symbols)
1708 scope_id = scanner->scope_id;
1709 key = g_scanner_lookup_internal (scanner, scope_id, value.v_identifier);
1710 if (!key && scope_id && scanner->config->scope_0_fallback)
1711 key = g_scanner_lookup_internal (scanner, 0, value.v_identifier);
1715 g_free (value.v_identifier);
1716 token = G_TOKEN_SYMBOL;
1717 value.v_symbol = key->value;
1721 if (token == G_TOKEN_IDENTIFIER &&
1722 config->scan_identifier_NULL &&
1723 strlen (value.v_identifier) == 4)
1725 gchar *null_upper = "NULL";
1726 gchar *null_lower = "null";
1728 if (scanner->config->case_sensitive)
1730 if (value.v_identifier[0] == null_upper[0] &&
1731 value.v_identifier[1] == null_upper[1] &&
1732 value.v_identifier[2] == null_upper[2] &&
1733 value.v_identifier[3] == null_upper[3])
1734 token = G_TOKEN_IDENTIFIER_NULL;
1738 if ((value.v_identifier[0] == null_upper[0] ||
1739 value.v_identifier[0] == null_lower[0]) &&
1740 (value.v_identifier[1] == null_upper[1] ||
1741 value.v_identifier[1] == null_lower[1]) &&
1742 (value.v_identifier[2] == null_upper[2] ||
1743 value.v_identifier[2] == null_lower[2]) &&
1744 (value.v_identifier[3] == null_upper[3] ||
1745 value.v_identifier[3] == null_lower[3]))
1746 token = G_TOKEN_IDENTIFIER_NULL;