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 scanner->config->cset_identifier_first= config_templ->cset_identifier_first;
193 scanner->config->cset_identifier_nth = config_templ->cset_identifier_nth;
194 scanner->config->cpair_comment_single = config_templ->cpair_comment_single;
195 scanner->config->skip_comment_multi = config_templ->skip_comment_multi;
196 scanner->config->skip_comment_single = config_templ->skip_comment_single;
197 scanner->config->scan_comment_multi = config_templ->scan_comment_multi;
198 scanner->config->scan_identifier = config_templ->scan_identifier;
199 scanner->config->scan_identifier_1char= config_templ->scan_identifier_1char;
200 scanner->config->scan_identifier_NULL = config_templ->scan_identifier_NULL;
201 scanner->config->scan_symbols = config_templ->scan_symbols;
202 scanner->config->scan_binary = config_templ->scan_binary;
203 scanner->config->scan_octal = config_templ->scan_octal;
204 scanner->config->scan_float = config_templ->scan_float;
205 scanner->config->scan_hex = config_templ->scan_hex;
206 scanner->config->scan_hex_dollar = config_templ->scan_hex_dollar;
207 scanner->config->scan_string_sq = config_templ->scan_string_sq;
208 scanner->config->scan_string_dq = config_templ->scan_string_dq;
209 scanner->config->numbers_2_int = config_templ->numbers_2_int;
210 scanner->config->int_2_float = config_templ->int_2_float;
211 scanner->config->identifier_2_string = config_templ->identifier_2_string;
212 scanner->config->char_2_token = config_templ->char_2_token;
213 scanner->config->symbol_2_token = config_templ->symbol_2_token;
214 scanner->config->scope_0_fallback = config_templ->scope_0_fallback;
216 scanner->token = G_TOKEN_NONE;
217 scanner->value.v_int = 0;
219 scanner->position = 0;
221 scanner->next_token = G_TOKEN_NONE;
222 scanner->next_value.v_int = 0;
223 scanner->next_line = 1;
224 scanner->next_position = 0;
226 scanner->symbol_table = g_hash_table_new (g_scanner_key_hash, g_scanner_key_equal);
227 scanner->input_fd = -1;
228 scanner->text = NULL;
229 scanner->text_end = NULL;
230 scanner->buffer = NULL;
231 scanner->scope_id = 0;
233 scanner->msg_handler = g_scanner_msg_handler;
239 g_scanner_free_value (GTokenType *token_p,
240 GTokenValue *value_p)
245 case G_TOKEN_IDENTIFIER:
246 case G_TOKEN_IDENTIFIER_NULL:
247 case G_TOKEN_COMMENT_SINGLE:
248 case G_TOKEN_COMMENT_MULTI:
249 g_free (value_p->v_string);
256 *token_p = G_TOKEN_NONE;
260 g_scanner_destroy_symbol_table_entry (gpointer _key,
264 GScannerKey *key = _key;
266 g_free (key->symbol);
271 g_scanner_destroy (GScanner *scanner)
273 g_return_if_fail (scanner != NULL);
275 g_hash_table_foreach (scanner->symbol_table,
276 g_scanner_destroy_symbol_table_entry, NULL);
277 g_hash_table_destroy (scanner->symbol_table);
278 g_scanner_free_value (&scanner->token, &scanner->value);
279 g_scanner_free_value (&scanner->next_token, &scanner->next_value);
280 g_free (scanner->config);
281 g_free (scanner->buffer);
286 g_scanner_msg_handler (GScanner *scanner,
290 g_return_if_fail (scanner != NULL);
292 fprintf (stdout, "%s:%d: ", scanner->input_name, scanner->line);
294 fprintf (stdout, "error: ");
295 fprintf (stdout, "%s\n", message);
299 g_scanner_error (GScanner *scanner,
303 g_return_if_fail (scanner != NULL);
304 g_return_if_fail (format != NULL);
306 scanner->parse_errors++;
308 if (scanner->msg_handler)
313 va_start (args, format);
314 string = g_strdup_vprintf (format, args);
317 scanner->msg_handler (scanner, string, TRUE);
324 g_scanner_warn (GScanner *scanner,
328 g_return_if_fail (scanner != NULL);
329 g_return_if_fail (format != NULL);
331 if (scanner->msg_handler)
336 va_start (args, format);
337 string = g_strdup_vprintf (format, args);
340 scanner->msg_handler (scanner, string, FALSE);
347 g_scanner_key_equal (gconstpointer v1,
350 const GScannerKey *key1 = v1;
351 const GScannerKey *key2 = v2;
353 return (key1->scope_id == key2->scope_id) && (strcmp (key1->symbol, key2->symbol) == 0);
357 g_scanner_key_hash (gconstpointer v)
359 const GScannerKey *key = v;
364 for (c = key->symbol; *c; c++)
380 static inline GScannerKey*
381 g_scanner_lookup_internal (GScanner *scanner,
388 key.scope_id = scope_id;
390 if (!scanner->config->case_sensitive)
395 key.symbol = g_new (gchar, strlen (symbol) + 1);
396 for (d = key.symbol, c = symbol; *c; c++, d++)
399 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
404 key.symbol = (gchar*) symbol;
405 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
412 g_scanner_scope_add_symbol (GScanner *scanner,
419 g_return_if_fail (scanner != NULL);
420 g_return_if_fail (symbol != NULL);
422 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
426 key = g_new (GScannerKey, 1);
427 key->scope_id = scope_id;
428 key->symbol = g_strdup (symbol);
430 if (!scanner->config->case_sensitive)
441 g_hash_table_insert (scanner->symbol_table, key, key);
448 g_scanner_scope_remove_symbol (GScanner *scanner,
454 g_return_if_fail (scanner != NULL);
455 g_return_if_fail (symbol != NULL);
457 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
461 g_hash_table_remove (scanner->symbol_table, key);
462 g_free (key->symbol);
468 g_scanner_lookup_symbol (GScanner *scanner,
474 g_return_val_if_fail (scanner != NULL, NULL);
479 scope_id = scanner->scope_id;
480 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
481 if (!key && scope_id && scanner->config->scope_0_fallback)
482 key = g_scanner_lookup_internal (scanner, 0, symbol);
491 g_scanner_scope_lookup_symbol (GScanner *scanner,
497 g_return_val_if_fail (scanner != NULL, NULL);
502 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
511 g_scanner_set_scope (GScanner *scanner,
516 g_return_val_if_fail (scanner != NULL, 0);
518 old_scope_id = scanner->scope_id;
519 scanner->scope_id = scope_id;
525 g_scanner_foreach_internal (gpointer _key,
536 func = (GHFunc) d[0];
541 if (key->scope_id == *scope_id)
542 func (key->symbol, key->value, user_data);
546 g_scanner_scope_foreach_symbol (GScanner *scanner,
553 g_return_if_fail (scanner != NULL);
555 d[0] = (gpointer) func;
559 g_hash_table_foreach (scanner->symbol_table, g_scanner_foreach_internal, d);
563 g_scanner_freeze_symbol_table (GScanner *scanner)
565 g_return_if_fail (scanner != NULL);
567 g_hash_table_freeze (scanner->symbol_table);
571 g_scanner_thaw_symbol_table (GScanner *scanner)
573 g_return_if_fail (scanner != NULL);
575 g_hash_table_thaw (scanner->symbol_table);
579 g_scanner_peek_next_token (GScanner *scanner)
581 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
583 if (scanner->next_token == G_TOKEN_NONE)
585 scanner->next_line = scanner->line;
586 scanner->next_position = scanner->position;
587 g_scanner_get_token_i (scanner,
588 &scanner->next_token,
589 &scanner->next_value,
591 &scanner->next_position);
594 return scanner->next_token;
598 g_scanner_get_next_token (GScanner *scanner)
600 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
602 if (scanner->next_token != G_TOKEN_NONE)
604 g_scanner_free_value (&scanner->token, &scanner->value);
606 scanner->token = scanner->next_token;
607 scanner->value = scanner->next_value;
608 scanner->line = scanner->next_line;
609 scanner->position = scanner->next_position;
610 scanner->next_token = G_TOKEN_NONE;
613 g_scanner_get_token_i (scanner,
619 return scanner->token;
623 g_scanner_cur_token (GScanner *scanner)
625 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
627 return scanner->token;
631 g_scanner_cur_value (GScanner *scanner)
637 g_return_val_if_fail (scanner != NULL, v);
639 /* MSC isn't capable of handling return scanner->value; ? */
647 g_scanner_cur_line (GScanner *scanner)
649 g_return_val_if_fail (scanner != NULL, 0);
651 return scanner->line;
655 g_scanner_cur_position (GScanner *scanner)
657 g_return_val_if_fail (scanner != NULL, 0);
659 return scanner->position;
663 g_scanner_eof (GScanner *scanner)
665 g_return_val_if_fail (scanner != NULL, TRUE);
667 return scanner->token == G_TOKEN_EOF;
671 g_scanner_input_file (GScanner *scanner,
674 g_return_if_fail (scanner != NULL);
675 g_return_if_fail (input_fd >= 0);
677 if (scanner->input_fd >= 0)
678 g_scanner_sync_file_offset (scanner);
680 scanner->token = G_TOKEN_NONE;
681 scanner->value.v_int = 0;
683 scanner->position = 0;
684 scanner->next_token = G_TOKEN_NONE;
686 scanner->input_fd = input_fd;
687 scanner->text = NULL;
688 scanner->text_end = NULL;
690 if (!scanner->buffer)
691 scanner->buffer = g_new (gchar, READ_BUFFER_SIZE + 1);
695 g_scanner_input_text (GScanner *scanner,
699 g_return_if_fail (scanner != NULL);
701 g_return_if_fail (text != NULL);
705 if (scanner->input_fd >= 0)
706 g_scanner_sync_file_offset (scanner);
708 scanner->token = G_TOKEN_NONE;
709 scanner->value.v_int = 0;
711 scanner->position = 0;
712 scanner->next_token = G_TOKEN_NONE;
714 scanner->input_fd = -1;
715 scanner->text = text;
716 scanner->text_end = text + text_len;
720 g_free (scanner->buffer);
721 scanner->buffer = NULL;
726 g_scanner_peek_next_char (GScanner *scanner)
728 if (scanner->text < scanner->text_end)
730 return *scanner->text;
732 else if (scanner->input_fd >= 0)
737 buffer = scanner->buffer;
740 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
742 while (count == -1 && (errno == EINTR || errno == EAGAIN));
746 scanner->input_fd = -1;
752 scanner->text = buffer;
753 scanner->text_end = buffer + count;
763 g_scanner_sync_file_offset (GScanner *scanner)
765 g_return_if_fail (scanner != NULL);
767 /* for file input, rewind the filedescriptor to the current
768 * buffer position and blow the file read ahead buffer. usefull for
769 * third party uses of our filedescriptor, which hooks onto the current
773 if (scanner->input_fd >= 0 && scanner->text_end > scanner->text)
777 buffered = scanner->text_end - scanner->text;
778 if (lseek (scanner->input_fd, - buffered, SEEK_CUR) >= 0)
780 /* we succeeded, blow our buffer's contents now */
781 scanner->text = NULL;
782 scanner->text_end = NULL;
790 g_scanner_get_char (GScanner *scanner,
796 if (scanner->text < scanner->text_end)
797 fchar = *(scanner->text++);
798 else if (scanner->input_fd >= 0)
803 buffer = scanner->buffer;
806 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
808 while (count == -1 && (errno == EINTR || errno == EAGAIN));
812 scanner->input_fd = -1;
817 scanner->text = buffer + 1;
818 scanner->text_end = buffer + count;
822 g_scanner_sync_file_offset (scanner);
823 scanner->text_end = scanner->text;
824 scanner->input_fd = -1;
845 g_scanner_unexp_token (GScanner *scanner,
846 GTokenType expected_token,
847 const gchar *identifier_spec,
848 const gchar *symbol_spec,
849 const gchar *symbol_name,
850 const gchar *message,
854 guint token_string_len;
855 gchar *expected_string;
856 guint expected_string_len;
857 gchar *message_prefix;
858 gboolean print_unexp;
859 void (*msg_handler) (GScanner*, const gchar*, ...);
861 g_return_if_fail (scanner != NULL);
864 msg_handler = g_scanner_error;
866 msg_handler = g_scanner_warn;
868 if (!identifier_spec)
869 identifier_spec = "identifier";
871 symbol_spec = "symbol";
873 token_string_len = 56;
874 token_string = g_new (gchar, token_string_len + 1);
875 expected_string_len = 64;
876 expected_string = g_new (gchar, expected_string_len + 1);
879 switch (scanner->token)
882 g_snprintf (token_string, token_string_len, "end of file");
886 if (scanner->token >= 1 && scanner->token <= 255)
888 if ((scanner->token >= ' ' && scanner->token <= '~') ||
889 strchr (scanner->config->cset_identifier_first, scanner->token) ||
890 strchr (scanner->config->cset_identifier_nth, scanner->token))
891 g_snprintf (token_string, expected_string_len, "character `%c'", scanner->token);
893 g_snprintf (token_string, expected_string_len, "character `\\%o'", scanner->token);
896 else if (!scanner->config->symbol_2_token)
898 g_snprintf (token_string, token_string_len, "(unknown) token <%d>", scanner->token);
903 if (expected_token == G_TOKEN_SYMBOL ||
904 (scanner->config->symbol_2_token &&
905 expected_token > G_TOKEN_LAST))
908 g_snprintf (token_string,
911 print_unexp ? "" : "invalid ",
915 g_snprintf (token_string,
918 print_unexp ? "" : "invalid ",
924 expected_token = G_TOKEN_NONE;
925 switch (scanner->value.v_error)
927 case G_ERR_UNEXP_EOF:
928 g_snprintf (token_string, token_string_len, "scanner: unexpected end of file");
931 case G_ERR_UNEXP_EOF_IN_STRING:
932 g_snprintf (token_string, token_string_len, "scanner: unterminated string constant");
935 case G_ERR_UNEXP_EOF_IN_COMMENT:
936 g_snprintf (token_string, token_string_len, "scanner: unterminated comment");
939 case G_ERR_NON_DIGIT_IN_CONST:
940 g_snprintf (token_string, token_string_len, "scanner: non digit in constant");
943 case G_ERR_FLOAT_RADIX:
944 g_snprintf (token_string, token_string_len, "scanner: invalid radix for floating constant");
947 case G_ERR_FLOAT_MALFORMED:
948 g_snprintf (token_string, token_string_len, "scanner: malformed floating constant");
951 case G_ERR_DIGIT_RADIX:
952 g_snprintf (token_string, token_string_len, "scanner: digit is beyond radix");
957 g_snprintf (token_string, token_string_len, "scanner: unknown error");
963 g_snprintf (token_string, token_string_len, "character `%c'", scanner->value.v_char);
966 case G_TOKEN_IDENTIFIER:
967 case G_TOKEN_IDENTIFIER_NULL:
968 if (expected_token == G_TOKEN_IDENTIFIER ||
969 expected_token == G_TOKEN_IDENTIFIER_NULL)
971 g_snprintf (token_string,
974 print_unexp ? "" : "invalid ",
976 scanner->token == G_TOKEN_IDENTIFIER ? scanner->value.v_string : "null");
983 g_snprintf (token_string, token_string_len, "number `%ld'", scanner->value.v_int);
987 g_snprintf (token_string, token_string_len, "number `%.3f'", scanner->value.v_float);
991 if (expected_token == G_TOKEN_STRING)
993 g_snprintf (token_string,
995 "%s%sstring constant \"%s\"",
996 print_unexp ? "" : "invalid ",
997 scanner->value.v_string[0] == 0 ? "empty " : "",
998 scanner->value.v_string);
999 token_string[token_string_len - 2] = '"';
1000 token_string[token_string_len - 1] = 0;
1003 case G_TOKEN_COMMENT_SINGLE:
1004 case G_TOKEN_COMMENT_MULTI:
1005 g_snprintf (token_string, token_string_len, "comment");
1009 /* somehow the user's parsing code is screwed, there isn't much
1010 * we can do about it.
1011 * Note, a common case to trigger this is
1012 * g_scanner_peek_next_token(); g_scanner_unexp_token();
1013 * without an intermediate g_scanner_get_next_token().
1015 g_assert_not_reached ();
1020 switch (expected_token)
1022 gboolean need_valid;
1025 if (expected_token >= 1 && expected_token <= 255)
1027 if ((expected_token >= ' ' && expected_token <= '~') ||
1028 strchr (scanner->config->cset_identifier_first, expected_token) ||
1029 strchr (scanner->config->cset_identifier_nth, expected_token))
1030 g_snprintf (expected_string, expected_string_len, "character `%c'", expected_token);
1032 g_snprintf (expected_string, expected_string_len, "character `\\%o'", expected_token);
1035 else if (!scanner->config->symbol_2_token)
1037 g_snprintf (expected_string, expected_string_len, "(unknown) token <%d>", expected_token);
1041 case G_TOKEN_SYMBOL:
1042 need_valid = (scanner->token == G_TOKEN_SYMBOL ||
1043 (scanner->config->symbol_2_token &&
1044 scanner->token > G_TOKEN_LAST));
1045 g_snprintf (expected_string,
1046 expected_string_len,
1048 need_valid ? "valid " : "",
1050 /* FIXME: should we attempt to lookup the symbol_name for symbol_2_token? */
1054 g_snprintf (expected_string, expected_string_len, "number (integer)");
1058 g_snprintf (expected_string, expected_string_len, "number (float)");
1061 case G_TOKEN_STRING:
1062 g_snprintf (expected_string,
1063 expected_string_len,
1064 "%sstring constant",
1065 scanner->token == G_TOKEN_STRING ? "valid " : "");
1068 case G_TOKEN_IDENTIFIER:
1069 case G_TOKEN_IDENTIFIER_NULL:
1070 g_snprintf (expected_string,
1071 expected_string_len,
1073 (scanner->token == G_TOKEN_IDENTIFIER_NULL ||
1074 scanner->token == G_TOKEN_IDENTIFIER ? "valid " : ""),
1079 g_snprintf (expected_string, expected_string_len, "end of file");
1086 if (message && message[0] != 0)
1087 message_prefix = " - ";
1090 message_prefix = "";
1094 if (expected_token != G_TOKEN_NONE)
1097 msg_handler (scanner,
1098 "unexpected %s, expected %s%s%s",
1104 msg_handler (scanner,
1105 "%s, expected %s%s%s",
1114 msg_handler (scanner,
1115 "unexpected %s%s%s",
1120 msg_handler (scanner,
1127 g_free (token_string);
1128 g_free (expected_string);
1132 g_scanner_stat_mode (const gchar *filename)
1134 struct stat *stat_buf;
1137 stat_buf = g_new0 (struct stat, 1);
1139 lstat (filename, stat_buf);
1141 stat (filename, stat_buf);
1143 st_mode = stat_buf->st_mode;
1151 g_scanner_get_token_i (GScanner *scanner,
1152 GTokenType *token_p,
1153 GTokenValue *value_p,
1159 g_scanner_free_value (token_p, value_p);
1160 g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
1162 while (((*token_p > 0 && *token_p < 256) &&
1163 strchr (scanner->config->cset_skip_characters, *token_p)) ||
1164 (*token_p == G_TOKEN_CHAR &&
1165 strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
1166 (*token_p == G_TOKEN_COMMENT_MULTI &&
1167 scanner->config->skip_comment_multi) ||
1168 (*token_p == G_TOKEN_COMMENT_SINGLE &&
1169 scanner->config->skip_comment_single));
1173 case G_TOKEN_IDENTIFIER:
1174 if (scanner->config->identifier_2_string)
1175 *token_p = G_TOKEN_STRING;
1178 case G_TOKEN_SYMBOL:
1179 if (scanner->config->symbol_2_token)
1180 *token_p = (GTokenType) value_p->v_symbol;
1183 case G_TOKEN_BINARY:
1186 if (scanner->config->numbers_2_int)
1187 *token_p = G_TOKEN_INT;
1194 if (*token_p == G_TOKEN_INT &&
1195 scanner->config->int_2_float)
1197 *token_p = G_TOKEN_FLOAT;
1198 value_p->v_float = value_p->v_int;
1205 g_scanner_get_token_ll (GScanner *scanner,
1206 GTokenType *token_p,
1207 GTokenValue *value_p,
1211 GScannerConfig *config;
1213 gboolean in_comment_multi;
1214 gboolean in_comment_single;
1215 gboolean in_string_sq;
1216 gboolean in_string_dq;
1221 config = scanner->config;
1222 (*value_p).v_int = 0;
1224 if ((scanner->text >= scanner->text_end && scanner->input_fd < 0) ||
1225 scanner->token == G_TOKEN_EOF)
1227 *token_p = G_TOKEN_EOF;
1231 in_comment_multi = FALSE;
1232 in_comment_single = FALSE;
1233 in_string_sq = FALSE;
1234 in_string_dq = FALSE;
1237 do /* while (ch != 0) */
1239 gboolean dotted_float = FALSE;
1241 ch = g_scanner_get_char (scanner, line_p, position_p);
1244 token = G_TOKEN_NONE;
1246 /* this is *evil*, but needed ;(
1247 * we first check for identifier first character, because it
1248 * might interfere with other key chars like slashes or numbers
1250 if (config->scan_identifier &&
1251 ch && strchr (config->cset_identifier_first, ch))
1252 goto identifier_precedence;
1257 token = G_TOKEN_EOF;
1263 if (!config->scan_comment_multi ||
1264 g_scanner_peek_next_char (scanner) != '*')
1266 g_scanner_get_char (scanner, line_p, position_p);
1267 token = G_TOKEN_COMMENT_MULTI;
1268 in_comment_multi = TRUE;
1269 gstring = g_string_new ("");
1270 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1272 if (ch == '*' && g_scanner_peek_next_char (scanner) == '/')
1274 g_scanner_get_char (scanner, line_p, position_p);
1275 in_comment_multi = FALSE;
1279 gstring = g_string_append_c (gstring, ch);
1285 if (!config->scan_string_sq)
1287 token = G_TOKEN_STRING;
1288 in_string_sq = TRUE;
1289 gstring = g_string_new ("");
1290 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1294 in_string_sq = FALSE;
1298 gstring = g_string_append_c (gstring, ch);
1304 if (!config->scan_string_dq)
1306 token = G_TOKEN_STRING;
1307 in_string_dq = TRUE;
1308 gstring = g_string_new ("");
1309 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1313 in_string_dq = FALSE;
1320 ch = g_scanner_get_char (scanner, line_p, position_p);
1330 gstring = g_string_append_c (gstring, '\\');
1334 gstring = g_string_append_c (gstring, '\n');
1338 gstring = g_string_append_c (gstring, '\t');
1342 gstring = g_string_append_c (gstring, '\r');
1346 gstring = g_string_append_c (gstring, '\b');
1350 gstring = g_string_append_c (gstring, '\f');
1362 fchar = g_scanner_peek_next_char (scanner);
1363 if (fchar >= '0' && fchar <= '7')
1365 ch = g_scanner_get_char (scanner, line_p, position_p);
1366 i = i * 8 + ch - '0';
1367 fchar = g_scanner_peek_next_char (scanner);
1368 if (fchar >= '0' && fchar <= '7')
1370 ch = g_scanner_get_char (scanner, line_p, position_p);
1371 i = i * 8 + ch - '0';
1374 gstring = g_string_append_c (gstring, i);
1378 gstring = g_string_append_c (gstring, ch);
1383 gstring = g_string_append_c (gstring, ch);
1390 if (!config->scan_float)
1392 token = G_TOKEN_FLOAT;
1393 dotted_float = TRUE;
1394 ch = g_scanner_get_char (scanner, line_p, position_p);
1395 goto number_parsing;
1398 if (!config->scan_hex_dollar)
1400 token = G_TOKEN_HEX;
1401 ch = g_scanner_get_char (scanner, line_p, position_p);
1402 goto number_parsing;
1405 if (config->scan_octal)
1406 token = G_TOKEN_OCTAL;
1408 token = G_TOKEN_INT;
1409 ch = g_scanner_peek_next_char (scanner);
1410 if (config->scan_hex && (ch == 'x' || ch == 'X'))
1412 token = G_TOKEN_HEX;
1413 g_scanner_get_char (scanner, line_p, position_p);
1414 ch = g_scanner_get_char (scanner, line_p, position_p);
1417 token = G_TOKEN_ERROR;
1418 value.v_error = G_ERR_UNEXP_EOF;
1422 if (g_scanner_char_2_num (ch, 16) < 0)
1424 token = G_TOKEN_ERROR;
1425 value.v_error = G_ERR_DIGIT_RADIX;
1430 else if (config->scan_binary && (ch == 'b' || ch == 'B'))
1432 token = G_TOKEN_BINARY;
1433 g_scanner_get_char (scanner, line_p, position_p);
1434 ch = g_scanner_get_char (scanner, line_p, position_p);
1437 token = G_TOKEN_ERROR;
1438 value.v_error = G_ERR_UNEXP_EOF;
1442 if (g_scanner_char_2_num (ch, 10) < 0)
1444 token = G_TOKEN_ERROR;
1445 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1464 gboolean in_number = TRUE;
1467 if (token == G_TOKEN_NONE)
1468 token = G_TOKEN_INT;
1470 gstring = g_string_new (dotted_float ? "0." : "");
1471 gstring = g_string_append_c (gstring, ch);
1473 do /* while (in_number) */
1477 is_E = token == G_TOKEN_FLOAT && (ch == 'e' || ch == 'E');
1479 ch = g_scanner_peek_next_char (scanner);
1481 if (g_scanner_char_2_num (ch, 36) >= 0 ||
1482 (config->scan_float && ch == '.') ||
1483 (is_E && (ch == '+' || ch == '-')))
1485 ch = g_scanner_get_char (scanner, line_p, position_p);
1490 if (token != G_TOKEN_INT && token != G_TOKEN_OCTAL)
1492 value.v_error = token == G_TOKEN_FLOAT ? G_ERR_FLOAT_MALFORMED : G_ERR_FLOAT_RADIX;
1493 token = G_TOKEN_ERROR;
1498 token = G_TOKEN_FLOAT;
1499 gstring = g_string_append_c (gstring, ch);
1513 gstring = g_string_append_c (gstring, ch);
1518 if (token != G_TOKEN_FLOAT)
1520 token = G_TOKEN_ERROR;
1521 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1525 gstring = g_string_append_c (gstring, ch);
1530 if ((token != G_TOKEN_HEX && !config->scan_float) ||
1531 (token != G_TOKEN_HEX &&
1532 token != G_TOKEN_OCTAL &&
1533 token != G_TOKEN_FLOAT &&
1534 token != G_TOKEN_INT))
1536 token = G_TOKEN_ERROR;
1537 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1542 if (token != G_TOKEN_HEX)
1543 token = G_TOKEN_FLOAT;
1544 gstring = g_string_append_c (gstring, ch);
1549 if (token != G_TOKEN_HEX)
1551 token = G_TOKEN_ERROR;
1552 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1556 gstring = g_string_append_c (gstring, ch);
1568 case G_TOKEN_BINARY:
1569 value.v_binary = strtol (gstring->str, &endptr, 2);
1573 value.v_octal = strtol (gstring->str, &endptr, 8);
1577 value.v_int = strtol (gstring->str, &endptr, 10);
1581 value.v_float = g_strtod (gstring->str, &endptr);
1585 value.v_hex = strtol (gstring->str, &endptr, 16);
1591 if (endptr && *endptr)
1593 token = G_TOKEN_ERROR;
1594 if (*endptr == 'e' || *endptr == 'E')
1595 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1597 value.v_error = G_ERR_DIGIT_RADIX;
1599 g_string_free (gstring, TRUE);
1602 } /* number_parsing:... */
1608 if (config->cpair_comment_single &&
1609 ch == config->cpair_comment_single[0])
1611 token = G_TOKEN_COMMENT_SINGLE;
1612 in_comment_single = TRUE;
1613 gstring = g_string_new ("");
1614 while ((ch = g_scanner_get_char (scanner,
1618 if (ch == config->cpair_comment_single[1])
1620 in_comment_single = FALSE;
1625 gstring = g_string_append_c (gstring, ch);
1629 else if (config->scan_identifier && ch &&
1630 strchr (config->cset_identifier_first, ch))
1632 identifier_precedence:
1634 if (config->cset_identifier_nth && ch &&
1635 strchr (config->cset_identifier_nth,
1636 g_scanner_peek_next_char (scanner)))
1638 token = G_TOKEN_IDENTIFIER;
1639 gstring = g_string_new ("");
1640 gstring = g_string_append_c (gstring, ch);
1643 ch = g_scanner_get_char (scanner, line_p, position_p);
1644 gstring = g_string_append_c (gstring, ch);
1645 ch = g_scanner_peek_next_char (scanner);
1647 while (ch && strchr (config->cset_identifier_nth, ch));
1650 else if (config->scan_identifier_1char)
1652 token = G_TOKEN_IDENTIFIER;
1653 value.v_identifier = g_new0 (gchar, 2);
1654 value.v_identifier[0] = ch;
1660 if (config->char_2_token)
1664 token = G_TOKEN_CHAR;
1669 } /* default_case:... */
1672 g_assert (ch == 0 && token != G_TOKEN_NONE); /* paranoid */
1676 if (in_comment_multi || in_comment_single ||
1677 in_string_sq || in_string_dq)
1679 token = G_TOKEN_ERROR;
1682 g_string_free (gstring, TRUE);
1686 if (in_comment_multi || in_comment_single)
1687 value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
1688 else /* (in_string_sq || in_string_dq) */
1689 value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
1694 value.v_string = gstring->str;
1695 g_string_free (gstring, FALSE);
1699 if (token == G_TOKEN_IDENTIFIER)
1701 if (config->scan_symbols)
1706 scope_id = scanner->scope_id;
1707 key = g_scanner_lookup_internal (scanner, scope_id, value.v_identifier);
1708 if (!key && scope_id && scanner->config->scope_0_fallback)
1709 key = g_scanner_lookup_internal (scanner, 0, value.v_identifier);
1713 g_free (value.v_identifier);
1714 token = G_TOKEN_SYMBOL;
1715 value.v_symbol = key->value;
1719 if (token == G_TOKEN_IDENTIFIER &&
1720 config->scan_identifier_NULL &&
1721 strlen (value.v_identifier) == 4)
1723 gchar *null_upper = "NULL";
1724 gchar *null_lower = "null";
1726 if (scanner->config->case_sensitive)
1728 if (value.v_identifier[0] == null_upper[0] &&
1729 value.v_identifier[1] == null_upper[1] &&
1730 value.v_identifier[2] == null_upper[2] &&
1731 value.v_identifier[3] == null_upper[3])
1732 token = G_TOKEN_IDENTIFIER_NULL;
1736 if ((value.v_identifier[0] == null_upper[0] ||
1737 value.v_identifier[0] == null_lower[0]) &&
1738 (value.v_identifier[1] == null_upper[1] ||
1739 value.v_identifier[1] == null_lower[1]) &&
1740 (value.v_identifier[2] == null_upper[2] ||
1741 value.v_identifier[2] == null_lower[2]) &&
1742 (value.v_identifier[3] == null_upper[3] ||
1743 value.v_identifier[3] == null_lower[3]))
1744 token = G_TOKEN_IDENTIFIER_NULL;