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 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.
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.
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.
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/.
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 */,
97 ) /* cset_identifier_nth */,
98 ( "#\n" ) /* cpair_comment_single */,
100 FALSE /* case_sensitive */,
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 */,
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 */,
125 /* --- prototypes --- */
127 GScannerKey* g_scanner_lookup_internal (GScanner *scanner,
129 const gchar *symbol);
130 static gboolean g_scanner_key_equal (gconstpointer v1,
132 static guint g_scanner_key_hash (gconstpointer v);
133 static void g_scanner_get_token_ll (GScanner *scanner,
135 GTokenValue *value_p,
138 static void g_scanner_get_token_i (GScanner *scanner,
140 GTokenValue *value_p,
144 static guchar g_scanner_peek_next_char (GScanner *scanner);
145 static guchar g_scanner_get_char (GScanner *scanner,
148 static void g_scanner_msg_handler (GScanner *scanner,
153 /* --- functions --- */
155 g_scanner_char_2_num (guchar c,
158 if (c >= '0' && c <= '9')
160 else if (c >= 'A' && c <= 'Z')
162 else if (c >= 'a' && c <= 'z')
174 g_scanner_new (const GScannerConfig *config_templ)
179 config_templ = &g_scanner_config_template;
181 scanner = g_new0 (GScanner, 1);
183 scanner->user_data = NULL;
184 scanner->max_parse_errors = 0;
185 scanner->parse_errors = 0;
186 scanner->input_name = NULL;
187 g_datalist_init (&scanner->qdata);
189 scanner->config = g_new0 (GScannerConfig, 1);
191 scanner->config->case_sensitive = config_templ->case_sensitive;
192 scanner->config->cset_skip_characters = config_templ->cset_skip_characters;
193 if (!scanner->config->cset_skip_characters)
194 scanner->config->cset_skip_characters = "";
195 scanner->config->cset_identifier_first = config_templ->cset_identifier_first;
196 scanner->config->cset_identifier_nth = config_templ->cset_identifier_nth;
197 scanner->config->cpair_comment_single = config_templ->cpair_comment_single;
198 scanner->config->skip_comment_multi = config_templ->skip_comment_multi;
199 scanner->config->skip_comment_single = config_templ->skip_comment_single;
200 scanner->config->scan_comment_multi = config_templ->scan_comment_multi;
201 scanner->config->scan_identifier = config_templ->scan_identifier;
202 scanner->config->scan_identifier_1char = config_templ->scan_identifier_1char;
203 scanner->config->scan_identifier_NULL = config_templ->scan_identifier_NULL;
204 scanner->config->scan_symbols = config_templ->scan_symbols;
205 scanner->config->scan_binary = config_templ->scan_binary;
206 scanner->config->scan_octal = config_templ->scan_octal;
207 scanner->config->scan_float = config_templ->scan_float;
208 scanner->config->scan_hex = config_templ->scan_hex;
209 scanner->config->scan_hex_dollar = config_templ->scan_hex_dollar;
210 scanner->config->scan_string_sq = config_templ->scan_string_sq;
211 scanner->config->scan_string_dq = config_templ->scan_string_dq;
212 scanner->config->numbers_2_int = config_templ->numbers_2_int;
213 scanner->config->int_2_float = config_templ->int_2_float;
214 scanner->config->identifier_2_string = config_templ->identifier_2_string;
215 scanner->config->char_2_token = config_templ->char_2_token;
216 scanner->config->symbol_2_token = config_templ->symbol_2_token;
217 scanner->config->scope_0_fallback = config_templ->scope_0_fallback;
219 scanner->token = G_TOKEN_NONE;
220 scanner->value.v_int = 0;
222 scanner->position = 0;
224 scanner->next_token = G_TOKEN_NONE;
225 scanner->next_value.v_int = 0;
226 scanner->next_line = 1;
227 scanner->next_position = 0;
229 scanner->symbol_table = g_hash_table_new (g_scanner_key_hash, g_scanner_key_equal);
230 scanner->input_fd = -1;
231 scanner->text = NULL;
232 scanner->text_end = NULL;
233 scanner->buffer = NULL;
234 scanner->scope_id = 0;
236 scanner->msg_handler = g_scanner_msg_handler;
242 g_scanner_free_value (GTokenType *token_p,
243 GTokenValue *value_p)
248 case G_TOKEN_IDENTIFIER:
249 case G_TOKEN_IDENTIFIER_NULL:
250 case G_TOKEN_COMMENT_SINGLE:
251 case G_TOKEN_COMMENT_MULTI:
252 g_free (value_p->v_string);
259 *token_p = G_TOKEN_NONE;
263 g_scanner_destroy_symbol_table_entry (gpointer _key,
267 GScannerKey *key = _key;
269 g_free (key->symbol);
274 g_scanner_destroy (GScanner *scanner)
276 g_return_if_fail (scanner != NULL);
278 g_datalist_clear (&scanner->qdata);
279 g_hash_table_foreach (scanner->symbol_table,
280 g_scanner_destroy_symbol_table_entry, NULL);
281 g_hash_table_destroy (scanner->symbol_table);
282 g_scanner_free_value (&scanner->token, &scanner->value);
283 g_scanner_free_value (&scanner->next_token, &scanner->next_value);
284 g_free (scanner->config);
285 g_free (scanner->buffer);
290 g_scanner_msg_handler (GScanner *scanner,
294 g_return_if_fail (scanner != NULL);
296 fprintf (stdout, "%s:%d: ", scanner->input_name, scanner->line);
298 fprintf (stdout, "error: ");
299 fprintf (stdout, "%s\n", message);
303 g_scanner_error (GScanner *scanner,
307 g_return_if_fail (scanner != NULL);
308 g_return_if_fail (format != NULL);
310 scanner->parse_errors++;
312 if (scanner->msg_handler)
317 va_start (args, format);
318 string = g_strdup_vprintf (format, args);
321 scanner->msg_handler (scanner, string, TRUE);
328 g_scanner_warn (GScanner *scanner,
332 g_return_if_fail (scanner != NULL);
333 g_return_if_fail (format != NULL);
335 if (scanner->msg_handler)
340 va_start (args, format);
341 string = g_strdup_vprintf (format, args);
344 scanner->msg_handler (scanner, string, FALSE);
351 g_scanner_key_equal (gconstpointer v1,
354 const GScannerKey *key1 = v1;
355 const GScannerKey *key2 = v2;
357 return (key1->scope_id == key2->scope_id) && (strcmp (key1->symbol, key2->symbol) == 0);
361 g_scanner_key_hash (gconstpointer v)
363 const GScannerKey *key = v;
368 for (c = key->symbol; *c; c++)
369 h = (h << 5) - h + *c;
374 static inline GScannerKey*
375 g_scanner_lookup_internal (GScanner *scanner,
382 key.scope_id = scope_id;
384 if (!scanner->config->case_sensitive)
389 key.symbol = g_new (gchar, strlen (symbol) + 1);
390 for (d = key.symbol, c = symbol; *c; c++, d++)
393 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
398 key.symbol = (gchar*) symbol;
399 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
406 g_scanner_scope_add_symbol (GScanner *scanner,
413 g_return_if_fail (scanner != NULL);
414 g_return_if_fail (symbol != NULL);
416 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
420 key = g_new (GScannerKey, 1);
421 key->scope_id = scope_id;
422 key->symbol = g_strdup (symbol);
424 if (!scanner->config->case_sensitive)
435 g_hash_table_insert (scanner->symbol_table, key, key);
442 g_scanner_scope_remove_symbol (GScanner *scanner,
448 g_return_if_fail (scanner != NULL);
449 g_return_if_fail (symbol != NULL);
451 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
455 g_hash_table_remove (scanner->symbol_table, key);
456 g_free (key->symbol);
462 g_scanner_lookup_symbol (GScanner *scanner,
468 g_return_val_if_fail (scanner != NULL, NULL);
473 scope_id = scanner->scope_id;
474 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
475 if (!key && scope_id && scanner->config->scope_0_fallback)
476 key = g_scanner_lookup_internal (scanner, 0, symbol);
485 g_scanner_scope_lookup_symbol (GScanner *scanner,
491 g_return_val_if_fail (scanner != NULL, NULL);
496 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
505 g_scanner_set_scope (GScanner *scanner,
510 g_return_val_if_fail (scanner != NULL, 0);
512 old_scope_id = scanner->scope_id;
513 scanner->scope_id = scope_id;
519 g_scanner_foreach_internal (gpointer _key,
530 func = (GHFunc) d[0];
535 if (key->scope_id == *scope_id)
536 func (key->symbol, key->value, user_data);
540 g_scanner_scope_foreach_symbol (GScanner *scanner,
547 g_return_if_fail (scanner != NULL);
549 d[0] = (gpointer) func;
553 g_hash_table_foreach (scanner->symbol_table, g_scanner_foreach_internal, d);
557 g_scanner_peek_next_token (GScanner *scanner)
559 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
561 if (scanner->next_token == G_TOKEN_NONE)
563 scanner->next_line = scanner->line;
564 scanner->next_position = scanner->position;
565 g_scanner_get_token_i (scanner,
566 &scanner->next_token,
567 &scanner->next_value,
569 &scanner->next_position);
572 return scanner->next_token;
576 g_scanner_get_next_token (GScanner *scanner)
578 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
580 if (scanner->next_token != G_TOKEN_NONE)
582 g_scanner_free_value (&scanner->token, &scanner->value);
584 scanner->token = scanner->next_token;
585 scanner->value = scanner->next_value;
586 scanner->line = scanner->next_line;
587 scanner->position = scanner->next_position;
588 scanner->next_token = G_TOKEN_NONE;
591 g_scanner_get_token_i (scanner,
597 return scanner->token;
601 g_scanner_cur_token (GScanner *scanner)
603 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
605 return scanner->token;
609 g_scanner_cur_value (GScanner *scanner)
615 g_return_val_if_fail (scanner != NULL, v);
617 /* MSC isn't capable of handling return scanner->value; ? */
625 g_scanner_cur_line (GScanner *scanner)
627 g_return_val_if_fail (scanner != NULL, 0);
629 return scanner->line;
633 g_scanner_cur_position (GScanner *scanner)
635 g_return_val_if_fail (scanner != NULL, 0);
637 return scanner->position;
641 g_scanner_eof (GScanner *scanner)
643 g_return_val_if_fail (scanner != NULL, TRUE);
645 return scanner->token == G_TOKEN_EOF;
649 g_scanner_input_file (GScanner *scanner,
652 g_return_if_fail (scanner != NULL);
653 g_return_if_fail (input_fd >= 0);
655 if (scanner->input_fd >= 0)
656 g_scanner_sync_file_offset (scanner);
658 scanner->token = G_TOKEN_NONE;
659 scanner->value.v_int = 0;
661 scanner->position = 0;
662 scanner->next_token = G_TOKEN_NONE;
664 scanner->input_fd = input_fd;
665 scanner->text = NULL;
666 scanner->text_end = NULL;
668 if (!scanner->buffer)
669 scanner->buffer = g_new (gchar, READ_BUFFER_SIZE + 1);
673 g_scanner_input_text (GScanner *scanner,
677 g_return_if_fail (scanner != NULL);
679 g_return_if_fail (text != NULL);
683 if (scanner->input_fd >= 0)
684 g_scanner_sync_file_offset (scanner);
686 scanner->token = G_TOKEN_NONE;
687 scanner->value.v_int = 0;
689 scanner->position = 0;
690 scanner->next_token = G_TOKEN_NONE;
692 scanner->input_fd = -1;
693 scanner->text = text;
694 scanner->text_end = text + text_len;
698 g_free (scanner->buffer);
699 scanner->buffer = NULL;
704 g_scanner_peek_next_char (GScanner *scanner)
706 if (scanner->text < scanner->text_end)
708 return *scanner->text;
710 else if (scanner->input_fd >= 0)
715 buffer = scanner->buffer;
718 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
720 while (count == -1 && (errno == EINTR || errno == EAGAIN));
724 scanner->input_fd = -1;
730 scanner->text = buffer;
731 scanner->text_end = buffer + count;
741 g_scanner_sync_file_offset (GScanner *scanner)
743 g_return_if_fail (scanner != NULL);
745 /* for file input, rewind the filedescriptor to the current
746 * buffer position and blow the file read ahead buffer. usefull for
747 * third party uses of our filedescriptor, which hooks onto the current
751 if (scanner->input_fd >= 0 && scanner->text_end > scanner->text)
755 buffered = scanner->text_end - scanner->text;
756 if (lseek (scanner->input_fd, - buffered, SEEK_CUR) >= 0)
758 /* we succeeded, blow our buffer's contents now */
759 scanner->text = NULL;
760 scanner->text_end = NULL;
768 g_scanner_get_char (GScanner *scanner,
774 if (scanner->text < scanner->text_end)
775 fchar = *(scanner->text++);
776 else if (scanner->input_fd >= 0)
781 buffer = scanner->buffer;
784 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
786 while (count == -1 && (errno == EINTR || errno == EAGAIN));
790 scanner->input_fd = -1;
795 scanner->text = buffer + 1;
796 scanner->text_end = buffer + count;
800 g_scanner_sync_file_offset (scanner);
801 scanner->text_end = scanner->text;
802 scanner->input_fd = -1;
823 g_scanner_unexp_token (GScanner *scanner,
824 GTokenType expected_token,
825 const gchar *identifier_spec,
826 const gchar *symbol_spec,
827 const gchar *symbol_name,
828 const gchar *message,
832 guint token_string_len;
833 gchar *expected_string;
834 guint expected_string_len;
835 gchar *message_prefix;
836 gboolean print_unexp;
837 void (*msg_handler) (GScanner*, const gchar*, ...);
839 g_return_if_fail (scanner != NULL);
842 msg_handler = g_scanner_error;
844 msg_handler = g_scanner_warn;
846 if (!identifier_spec)
847 identifier_spec = "identifier";
849 symbol_spec = "symbol";
851 token_string_len = 56;
852 token_string = g_new (gchar, token_string_len + 1);
853 expected_string_len = 64;
854 expected_string = g_new (gchar, expected_string_len + 1);
857 switch (scanner->token)
860 g_snprintf (token_string, token_string_len, "end of file");
864 if (scanner->token >= 1 && scanner->token <= 255)
866 if ((scanner->token >= ' ' && scanner->token <= '~') ||
867 strchr (scanner->config->cset_identifier_first, scanner->token) ||
868 strchr (scanner->config->cset_identifier_nth, scanner->token))
869 g_snprintf (token_string, expected_string_len, "character `%c'", scanner->token);
871 g_snprintf (token_string, expected_string_len, "character `\\%o'", scanner->token);
874 else if (!scanner->config->symbol_2_token)
876 g_snprintf (token_string, token_string_len, "(unknown) token <%d>", scanner->token);
881 if (expected_token == G_TOKEN_SYMBOL ||
882 (scanner->config->symbol_2_token &&
883 expected_token > G_TOKEN_LAST))
886 g_snprintf (token_string,
889 print_unexp ? "" : "invalid ",
893 g_snprintf (token_string,
896 print_unexp ? "" : "invalid ",
902 expected_token = G_TOKEN_NONE;
903 switch (scanner->value.v_error)
905 case G_ERR_UNEXP_EOF:
906 g_snprintf (token_string, token_string_len, "scanner: unexpected end of file");
909 case G_ERR_UNEXP_EOF_IN_STRING:
910 g_snprintf (token_string, token_string_len, "scanner: unterminated string constant");
913 case G_ERR_UNEXP_EOF_IN_COMMENT:
914 g_snprintf (token_string, token_string_len, "scanner: unterminated comment");
917 case G_ERR_NON_DIGIT_IN_CONST:
918 g_snprintf (token_string, token_string_len, "scanner: non digit in constant");
921 case G_ERR_FLOAT_RADIX:
922 g_snprintf (token_string, token_string_len, "scanner: invalid radix for floating constant");
925 case G_ERR_FLOAT_MALFORMED:
926 g_snprintf (token_string, token_string_len, "scanner: malformed floating constant");
929 case G_ERR_DIGIT_RADIX:
930 g_snprintf (token_string, token_string_len, "scanner: digit is beyond radix");
935 g_snprintf (token_string, token_string_len, "scanner: unknown error");
941 g_snprintf (token_string, token_string_len, "character `%c'", scanner->value.v_char);
944 case G_TOKEN_IDENTIFIER:
945 case G_TOKEN_IDENTIFIER_NULL:
946 if (expected_token == G_TOKEN_IDENTIFIER ||
947 expected_token == G_TOKEN_IDENTIFIER_NULL)
949 g_snprintf (token_string,
952 print_unexp ? "" : "invalid ",
954 scanner->token == G_TOKEN_IDENTIFIER ? scanner->value.v_string : "null");
961 g_snprintf (token_string, token_string_len, "number `%ld'", scanner->value.v_int);
965 g_snprintf (token_string, token_string_len, "number `%.3f'", scanner->value.v_float);
969 if (expected_token == G_TOKEN_STRING)
971 g_snprintf (token_string,
973 "%s%sstring constant \"%s\"",
974 print_unexp ? "" : "invalid ",
975 scanner->value.v_string[0] == 0 ? "empty " : "",
976 scanner->value.v_string);
977 token_string[token_string_len - 2] = '"';
978 token_string[token_string_len - 1] = 0;
981 case G_TOKEN_COMMENT_SINGLE:
982 case G_TOKEN_COMMENT_MULTI:
983 g_snprintf (token_string, token_string_len, "comment");
987 /* somehow the user's parsing code is screwed, there isn't much
988 * we can do about it.
989 * Note, a common case to trigger this is
990 * g_scanner_peek_next_token(); g_scanner_unexp_token();
991 * without an intermediate g_scanner_get_next_token().
993 g_assert_not_reached ();
998 switch (expected_token)
1000 gboolean need_valid;
1003 if (expected_token >= 1 && expected_token <= 255)
1005 if ((expected_token >= ' ' && expected_token <= '~') ||
1006 strchr (scanner->config->cset_identifier_first, expected_token) ||
1007 strchr (scanner->config->cset_identifier_nth, expected_token))
1008 g_snprintf (expected_string, expected_string_len, "character `%c'", expected_token);
1010 g_snprintf (expected_string, expected_string_len, "character `\\%o'", expected_token);
1013 else if (!scanner->config->symbol_2_token)
1015 g_snprintf (expected_string, expected_string_len, "(unknown) token <%d>", expected_token);
1019 case G_TOKEN_SYMBOL:
1020 need_valid = (scanner->token == G_TOKEN_SYMBOL ||
1021 (scanner->config->symbol_2_token &&
1022 scanner->token > G_TOKEN_LAST));
1023 g_snprintf (expected_string,
1024 expected_string_len,
1026 need_valid ? "valid " : "",
1028 /* FIXME: should we attempt to lookup the symbol_name for symbol_2_token? */
1032 g_snprintf (expected_string, expected_string_len, "number (integer)");
1036 g_snprintf (expected_string, expected_string_len, "number (float)");
1039 case G_TOKEN_STRING:
1040 g_snprintf (expected_string,
1041 expected_string_len,
1042 "%sstring constant",
1043 scanner->token == G_TOKEN_STRING ? "valid " : "");
1046 case G_TOKEN_IDENTIFIER:
1047 case G_TOKEN_IDENTIFIER_NULL:
1048 g_snprintf (expected_string,
1049 expected_string_len,
1051 (scanner->token == G_TOKEN_IDENTIFIER_NULL ||
1052 scanner->token == G_TOKEN_IDENTIFIER ? "valid " : ""),
1057 g_snprintf (expected_string, expected_string_len, "end of file");
1064 if (message && message[0] != 0)
1065 message_prefix = " - ";
1068 message_prefix = "";
1072 if (expected_token != G_TOKEN_NONE)
1075 msg_handler (scanner,
1076 "unexpected %s, expected %s%s%s",
1082 msg_handler (scanner,
1083 "%s, expected %s%s%s",
1092 msg_handler (scanner,
1093 "unexpected %s%s%s",
1098 msg_handler (scanner,
1105 g_free (token_string);
1106 g_free (expected_string);
1110 g_scanner_stat_mode (const gchar *filename)
1112 struct stat *stat_buf;
1115 stat_buf = g_new0 (struct stat, 1);
1117 lstat (filename, stat_buf);
1119 stat (filename, stat_buf);
1121 st_mode = stat_buf->st_mode;
1129 g_scanner_get_token_i (GScanner *scanner,
1130 GTokenType *token_p,
1131 GTokenValue *value_p,
1137 g_scanner_free_value (token_p, value_p);
1138 g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
1140 while (((*token_p > 0 && *token_p < 256) &&
1141 strchr (scanner->config->cset_skip_characters, *token_p)) ||
1142 (*token_p == G_TOKEN_CHAR &&
1143 strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
1144 (*token_p == G_TOKEN_COMMENT_MULTI &&
1145 scanner->config->skip_comment_multi) ||
1146 (*token_p == G_TOKEN_COMMENT_SINGLE &&
1147 scanner->config->skip_comment_single));
1151 case G_TOKEN_IDENTIFIER:
1152 if (scanner->config->identifier_2_string)
1153 *token_p = G_TOKEN_STRING;
1156 case G_TOKEN_SYMBOL:
1157 if (scanner->config->symbol_2_token)
1158 *token_p = (GTokenType) value_p->v_symbol;
1161 case G_TOKEN_BINARY:
1164 if (scanner->config->numbers_2_int)
1165 *token_p = G_TOKEN_INT;
1172 if (*token_p == G_TOKEN_INT &&
1173 scanner->config->int_2_float)
1175 *token_p = G_TOKEN_FLOAT;
1176 value_p->v_float = value_p->v_int;
1183 g_scanner_get_token_ll (GScanner *scanner,
1184 GTokenType *token_p,
1185 GTokenValue *value_p,
1189 GScannerConfig *config;
1191 gboolean in_comment_multi;
1192 gboolean in_comment_single;
1193 gboolean in_string_sq;
1194 gboolean in_string_dq;
1199 config = scanner->config;
1200 (*value_p).v_int = 0;
1202 if ((scanner->text >= scanner->text_end && scanner->input_fd < 0) ||
1203 scanner->token == G_TOKEN_EOF)
1205 *token_p = G_TOKEN_EOF;
1209 in_comment_multi = FALSE;
1210 in_comment_single = FALSE;
1211 in_string_sq = FALSE;
1212 in_string_dq = FALSE;
1215 do /* while (ch != 0) */
1217 gboolean dotted_float = FALSE;
1219 ch = g_scanner_get_char (scanner, line_p, position_p);
1222 token = G_TOKEN_NONE;
1224 /* this is *evil*, but needed ;(
1225 * we first check for identifier first character, because it
1226 * might interfere with other key chars like slashes or numbers
1228 if (config->scan_identifier &&
1229 ch && strchr (config->cset_identifier_first, ch))
1230 goto identifier_precedence;
1235 token = G_TOKEN_EOF;
1241 if (!config->scan_comment_multi ||
1242 g_scanner_peek_next_char (scanner) != '*')
1244 g_scanner_get_char (scanner, line_p, position_p);
1245 token = G_TOKEN_COMMENT_MULTI;
1246 in_comment_multi = TRUE;
1247 gstring = g_string_new ("");
1248 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1250 if (ch == '*' && g_scanner_peek_next_char (scanner) == '/')
1252 g_scanner_get_char (scanner, line_p, position_p);
1253 in_comment_multi = FALSE;
1257 gstring = g_string_append_c (gstring, ch);
1263 if (!config->scan_string_sq)
1265 token = G_TOKEN_STRING;
1266 in_string_sq = TRUE;
1267 gstring = g_string_new ("");
1268 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1272 in_string_sq = FALSE;
1276 gstring = g_string_append_c (gstring, ch);
1282 if (!config->scan_string_dq)
1284 token = G_TOKEN_STRING;
1285 in_string_dq = TRUE;
1286 gstring = g_string_new ("");
1287 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1291 in_string_dq = FALSE;
1298 ch = g_scanner_get_char (scanner, line_p, position_p);
1308 gstring = g_string_append_c (gstring, '\\');
1312 gstring = g_string_append_c (gstring, '\n');
1316 gstring = g_string_append_c (gstring, '\t');
1320 gstring = g_string_append_c (gstring, '\r');
1324 gstring = g_string_append_c (gstring, '\b');
1328 gstring = g_string_append_c (gstring, '\f');
1340 fchar = g_scanner_peek_next_char (scanner);
1341 if (fchar >= '0' && fchar <= '7')
1343 ch = g_scanner_get_char (scanner, line_p, position_p);
1344 i = i * 8 + ch - '0';
1345 fchar = g_scanner_peek_next_char (scanner);
1346 if (fchar >= '0' && fchar <= '7')
1348 ch = g_scanner_get_char (scanner, line_p, position_p);
1349 i = i * 8 + ch - '0';
1352 gstring = g_string_append_c (gstring, i);
1356 gstring = g_string_append_c (gstring, ch);
1361 gstring = g_string_append_c (gstring, ch);
1368 if (!config->scan_float)
1370 token = G_TOKEN_FLOAT;
1371 dotted_float = TRUE;
1372 ch = g_scanner_get_char (scanner, line_p, position_p);
1373 goto number_parsing;
1376 if (!config->scan_hex_dollar)
1378 token = G_TOKEN_HEX;
1379 ch = g_scanner_get_char (scanner, line_p, position_p);
1380 goto number_parsing;
1383 if (config->scan_octal)
1384 token = G_TOKEN_OCTAL;
1386 token = G_TOKEN_INT;
1387 ch = g_scanner_peek_next_char (scanner);
1388 if (config->scan_hex && (ch == 'x' || ch == 'X'))
1390 token = G_TOKEN_HEX;
1391 g_scanner_get_char (scanner, line_p, position_p);
1392 ch = g_scanner_get_char (scanner, line_p, position_p);
1395 token = G_TOKEN_ERROR;
1396 value.v_error = G_ERR_UNEXP_EOF;
1400 if (g_scanner_char_2_num (ch, 16) < 0)
1402 token = G_TOKEN_ERROR;
1403 value.v_error = G_ERR_DIGIT_RADIX;
1408 else if (config->scan_binary && (ch == 'b' || ch == 'B'))
1410 token = G_TOKEN_BINARY;
1411 g_scanner_get_char (scanner, line_p, position_p);
1412 ch = g_scanner_get_char (scanner, line_p, position_p);
1415 token = G_TOKEN_ERROR;
1416 value.v_error = G_ERR_UNEXP_EOF;
1420 if (g_scanner_char_2_num (ch, 10) < 0)
1422 token = G_TOKEN_ERROR;
1423 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1442 gboolean in_number = TRUE;
1445 if (token == G_TOKEN_NONE)
1446 token = G_TOKEN_INT;
1448 gstring = g_string_new (dotted_float ? "0." : "");
1449 gstring = g_string_append_c (gstring, ch);
1451 do /* while (in_number) */
1455 is_E = token == G_TOKEN_FLOAT && (ch == 'e' || ch == 'E');
1457 ch = g_scanner_peek_next_char (scanner);
1459 if (g_scanner_char_2_num (ch, 36) >= 0 ||
1460 (config->scan_float && ch == '.') ||
1461 (is_E && (ch == '+' || ch == '-')))
1463 ch = g_scanner_get_char (scanner, line_p, position_p);
1468 if (token != G_TOKEN_INT && token != G_TOKEN_OCTAL)
1470 value.v_error = token == G_TOKEN_FLOAT ? G_ERR_FLOAT_MALFORMED : G_ERR_FLOAT_RADIX;
1471 token = G_TOKEN_ERROR;
1476 token = G_TOKEN_FLOAT;
1477 gstring = g_string_append_c (gstring, ch);
1491 gstring = g_string_append_c (gstring, ch);
1496 if (token != G_TOKEN_FLOAT)
1498 token = G_TOKEN_ERROR;
1499 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1503 gstring = g_string_append_c (gstring, ch);
1508 if ((token != G_TOKEN_HEX && !config->scan_float) ||
1509 (token != G_TOKEN_HEX &&
1510 token != G_TOKEN_OCTAL &&
1511 token != G_TOKEN_FLOAT &&
1512 token != G_TOKEN_INT))
1514 token = G_TOKEN_ERROR;
1515 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1520 if (token != G_TOKEN_HEX)
1521 token = G_TOKEN_FLOAT;
1522 gstring = g_string_append_c (gstring, ch);
1527 if (token != G_TOKEN_HEX)
1529 token = G_TOKEN_ERROR;
1530 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1534 gstring = g_string_append_c (gstring, ch);
1546 case G_TOKEN_BINARY:
1547 value.v_binary = strtol (gstring->str, &endptr, 2);
1551 value.v_octal = strtol (gstring->str, &endptr, 8);
1555 value.v_int = strtol (gstring->str, &endptr, 10);
1559 value.v_float = g_strtod (gstring->str, &endptr);
1563 value.v_hex = strtol (gstring->str, &endptr, 16);
1569 if (endptr && *endptr)
1571 token = G_TOKEN_ERROR;
1572 if (*endptr == 'e' || *endptr == 'E')
1573 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1575 value.v_error = G_ERR_DIGIT_RADIX;
1577 g_string_free (gstring, TRUE);
1580 } /* number_parsing:... */
1586 if (config->cpair_comment_single &&
1587 ch == config->cpair_comment_single[0])
1589 token = G_TOKEN_COMMENT_SINGLE;
1590 in_comment_single = TRUE;
1591 gstring = g_string_new ("");
1592 ch = g_scanner_get_char (scanner, line_p, position_p);
1595 if (ch == config->cpair_comment_single[1])
1597 in_comment_single = FALSE;
1602 gstring = g_string_append_c (gstring, ch);
1603 ch = g_scanner_get_char (scanner, line_p, position_p);
1606 else if (config->scan_identifier && ch &&
1607 strchr (config->cset_identifier_first, ch))
1609 identifier_precedence:
1611 if (config->cset_identifier_nth && ch &&
1612 strchr (config->cset_identifier_nth,
1613 g_scanner_peek_next_char (scanner)))
1615 token = G_TOKEN_IDENTIFIER;
1616 gstring = g_string_new ("");
1617 gstring = g_string_append_c (gstring, ch);
1620 ch = g_scanner_get_char (scanner, line_p, position_p);
1621 gstring = g_string_append_c (gstring, ch);
1622 ch = g_scanner_peek_next_char (scanner);
1624 while (ch && strchr (config->cset_identifier_nth, ch));
1627 else if (config->scan_identifier_1char)
1629 token = G_TOKEN_IDENTIFIER;
1630 value.v_identifier = g_new0 (gchar, 2);
1631 value.v_identifier[0] = ch;
1637 if (config->char_2_token)
1641 token = G_TOKEN_CHAR;
1646 } /* default_case:... */
1649 g_assert (ch == 0 && token != G_TOKEN_NONE); /* paranoid */
1653 if (in_comment_multi || in_comment_single ||
1654 in_string_sq || in_string_dq)
1656 token = G_TOKEN_ERROR;
1659 g_string_free (gstring, TRUE);
1663 if (in_comment_multi || in_comment_single)
1664 value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
1665 else /* (in_string_sq || in_string_dq) */
1666 value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
1671 value.v_string = gstring->str;
1672 g_string_free (gstring, FALSE);
1676 if (token == G_TOKEN_IDENTIFIER)
1678 if (config->scan_symbols)
1683 scope_id = scanner->scope_id;
1684 key = g_scanner_lookup_internal (scanner, scope_id, value.v_identifier);
1685 if (!key && scope_id && scanner->config->scope_0_fallback)
1686 key = g_scanner_lookup_internal (scanner, 0, value.v_identifier);
1690 g_free (value.v_identifier);
1691 token = G_TOKEN_SYMBOL;
1692 value.v_symbol = key->value;
1696 if (token == G_TOKEN_IDENTIFIER &&
1697 config->scan_identifier_NULL &&
1698 strlen (value.v_identifier) == 4)
1700 gchar *null_upper = "NULL";
1701 gchar *null_lower = "null";
1703 if (scanner->config->case_sensitive)
1705 if (value.v_identifier[0] == null_upper[0] &&
1706 value.v_identifier[1] == null_upper[1] &&
1707 value.v_identifier[2] == null_upper[2] &&
1708 value.v_identifier[3] == null_upper[3])
1709 token = G_TOKEN_IDENTIFIER_NULL;
1713 if ((value.v_identifier[0] == null_upper[0] ||
1714 value.v_identifier[0] == null_lower[0]) &&
1715 (value.v_identifier[1] == null_upper[1] ||
1716 value.v_identifier[1] == null_lower[1]) &&
1717 (value.v_identifier[2] == null_upper[2] ||
1718 value.v_identifier[2] == null_lower[2]) &&
1719 (value.v_identifier[3] == null_upper[3] ||
1720 value.v_identifier[3] == null_lower[3]))
1721 token = G_TOKEN_IDENTIFIER_NULL;