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/.
48 #include <io.h> /* For _read() */
52 #define to_lower(c) ( \
54 ( (((guchar)(c))>='A' && ((guchar)(c))<='Z') * ('a'-'A') ) | \
55 ( (((guchar)(c))>=192 && ((guchar)(c))<=214) * (224-192) ) | \
56 ( (((guchar)(c))>=216 && ((guchar)(c))<=222) * (248-216) ) | \
60 #define READ_BUFFER_SIZE (4000)
63 /* --- typedefs --- */
64 typedef struct _GScannerKey GScannerKey;
75 /* --- variables --- */
76 static GScannerConfig g_scanner_config_template =
80 ) /* cset_skip_characters */,
85 ) /* cset_identifier_first */,
93 ) /* cset_identifier_nth */,
94 ( "#\n" ) /* cpair_comment_single */,
96 FALSE /* case_sensitive */,
98 TRUE /* skip_comment_multi */,
99 TRUE /* skip_comment_single */,
100 TRUE /* scan_comment_multi */,
101 TRUE /* scan_identifier */,
102 FALSE /* scan_identifier_1char */,
103 FALSE /* scan_identifier_NULL */,
104 TRUE /* scan_symbols */,
105 FALSE /* scan_binary */,
106 TRUE /* scan_octal */,
107 TRUE /* scan_float */,
109 FALSE /* scan_hex_dollar */,
110 TRUE /* scan_string_sq */,
111 TRUE /* scan_string_dq */,
112 TRUE /* numbers_2_int */,
113 FALSE /* int_2_float */,
114 FALSE /* identifier_2_string */,
115 TRUE /* char_2_token */,
116 FALSE /* symbol_2_token */,
117 FALSE /* scope_0_fallback */,
121 /* --- prototypes --- */
123 GScannerKey* g_scanner_lookup_internal (GScanner *scanner,
125 const gchar *symbol);
126 static gboolean g_scanner_key_equal (gconstpointer v1,
128 static guint g_scanner_key_hash (gconstpointer v);
129 static void g_scanner_get_token_ll (GScanner *scanner,
131 GTokenValue *value_p,
134 static void g_scanner_get_token_i (GScanner *scanner,
136 GTokenValue *value_p,
140 static guchar g_scanner_peek_next_char (GScanner *scanner);
141 static guchar g_scanner_get_char (GScanner *scanner,
144 static void g_scanner_msg_handler (GScanner *scanner,
149 /* --- functions --- */
151 g_scanner_char_2_num (guchar c,
154 if (c >= '0' && c <= '9')
156 else if (c >= 'A' && c <= 'Z')
158 else if (c >= 'a' && c <= 'z')
170 g_scanner_new (const GScannerConfig *config_templ)
175 config_templ = &g_scanner_config_template;
177 scanner = g_new0 (GScanner, 1);
179 scanner->user_data = NULL;
180 scanner->max_parse_errors = 1;
181 scanner->parse_errors = 0;
182 scanner->input_name = NULL;
183 g_datalist_init (&scanner->qdata);
185 scanner->config = g_new0 (GScannerConfig, 1);
187 scanner->config->case_sensitive = config_templ->case_sensitive;
188 scanner->config->cset_skip_characters = config_templ->cset_skip_characters;
189 if (!scanner->config->cset_skip_characters)
190 scanner->config->cset_skip_characters = "";
191 scanner->config->cset_identifier_first = config_templ->cset_identifier_first;
192 scanner->config->cset_identifier_nth = config_templ->cset_identifier_nth;
193 scanner->config->cpair_comment_single = config_templ->cpair_comment_single;
194 scanner->config->skip_comment_multi = config_templ->skip_comment_multi;
195 scanner->config->skip_comment_single = config_templ->skip_comment_single;
196 scanner->config->scan_comment_multi = config_templ->scan_comment_multi;
197 scanner->config->scan_identifier = config_templ->scan_identifier;
198 scanner->config->scan_identifier_1char = config_templ->scan_identifier_1char;
199 scanner->config->scan_identifier_NULL = config_templ->scan_identifier_NULL;
200 scanner->config->scan_symbols = config_templ->scan_symbols;
201 scanner->config->scan_binary = config_templ->scan_binary;
202 scanner->config->scan_octal = config_templ->scan_octal;
203 scanner->config->scan_float = config_templ->scan_float;
204 scanner->config->scan_hex = config_templ->scan_hex;
205 scanner->config->scan_hex_dollar = config_templ->scan_hex_dollar;
206 scanner->config->scan_string_sq = config_templ->scan_string_sq;
207 scanner->config->scan_string_dq = config_templ->scan_string_dq;
208 scanner->config->numbers_2_int = config_templ->numbers_2_int;
209 scanner->config->int_2_float = config_templ->int_2_float;
210 scanner->config->identifier_2_string = config_templ->identifier_2_string;
211 scanner->config->char_2_token = config_templ->char_2_token;
212 scanner->config->symbol_2_token = config_templ->symbol_2_token;
213 scanner->config->scope_0_fallback = config_templ->scope_0_fallback;
215 scanner->token = G_TOKEN_NONE;
216 scanner->value.v_int = 0;
218 scanner->position = 0;
220 scanner->next_token = G_TOKEN_NONE;
221 scanner->next_value.v_int = 0;
222 scanner->next_line = 1;
223 scanner->next_position = 0;
225 scanner->symbol_table = g_hash_table_new (g_scanner_key_hash, g_scanner_key_equal);
226 scanner->input_fd = -1;
227 scanner->text = NULL;
228 scanner->text_end = NULL;
229 scanner->buffer = NULL;
230 scanner->scope_id = 0;
232 scanner->msg_handler = g_scanner_msg_handler;
238 g_scanner_free_value (GTokenType *token_p,
239 GTokenValue *value_p)
244 case G_TOKEN_IDENTIFIER:
245 case G_TOKEN_IDENTIFIER_NULL:
246 case G_TOKEN_COMMENT_SINGLE:
247 case G_TOKEN_COMMENT_MULTI:
248 g_free (value_p->v_string);
255 *token_p = G_TOKEN_NONE;
259 g_scanner_destroy_symbol_table_entry (gpointer _key,
263 GScannerKey *key = _key;
265 g_free (key->symbol);
270 g_scanner_destroy (GScanner *scanner)
272 g_return_if_fail (scanner != NULL);
274 g_datalist_clear (&scanner->qdata);
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 (stderr, "%s:%d: ", scanner->input_name, scanner->line);
294 fprintf (stderr, "error: ");
295 fprintf (stderr, "%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++)
365 h = (h << 5) - h + *c;
370 static inline GScannerKey*
371 g_scanner_lookup_internal (GScanner *scanner,
378 key.scope_id = scope_id;
380 if (!scanner->config->case_sensitive)
385 key.symbol = g_new (gchar, strlen (symbol) + 1);
386 for (d = key.symbol, c = symbol; *c; c++, d++)
389 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
394 key.symbol = (gchar*) symbol;
395 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
402 g_scanner_scope_add_symbol (GScanner *scanner,
409 g_return_if_fail (scanner != NULL);
410 g_return_if_fail (symbol != NULL);
412 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
416 key = g_new (GScannerKey, 1);
417 key->scope_id = scope_id;
418 key->symbol = g_strdup (symbol);
420 if (!scanner->config->case_sensitive)
431 g_hash_table_insert (scanner->symbol_table, key, key);
438 g_scanner_scope_remove_symbol (GScanner *scanner,
444 g_return_if_fail (scanner != NULL);
445 g_return_if_fail (symbol != NULL);
447 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
451 g_hash_table_remove (scanner->symbol_table, key);
452 g_free (key->symbol);
458 g_scanner_lookup_symbol (GScanner *scanner,
464 g_return_val_if_fail (scanner != NULL, NULL);
469 scope_id = scanner->scope_id;
470 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
471 if (!key && scope_id && scanner->config->scope_0_fallback)
472 key = g_scanner_lookup_internal (scanner, 0, symbol);
481 g_scanner_scope_lookup_symbol (GScanner *scanner,
487 g_return_val_if_fail (scanner != NULL, NULL);
492 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
501 g_scanner_set_scope (GScanner *scanner,
506 g_return_val_if_fail (scanner != NULL, 0);
508 old_scope_id = scanner->scope_id;
509 scanner->scope_id = scope_id;
515 g_scanner_foreach_internal (gpointer _key,
526 func = (GHFunc) d[0];
531 if (key->scope_id == *scope_id)
532 func (key->symbol, key->value, user_data);
536 g_scanner_scope_foreach_symbol (GScanner *scanner,
543 g_return_if_fail (scanner != NULL);
545 d[0] = (gpointer) func;
549 g_hash_table_foreach (scanner->symbol_table, g_scanner_foreach_internal, d);
553 g_scanner_peek_next_token (GScanner *scanner)
555 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
557 if (scanner->next_token == G_TOKEN_NONE)
559 scanner->next_line = scanner->line;
560 scanner->next_position = scanner->position;
561 g_scanner_get_token_i (scanner,
562 &scanner->next_token,
563 &scanner->next_value,
565 &scanner->next_position);
568 return scanner->next_token;
572 g_scanner_get_next_token (GScanner *scanner)
574 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
576 if (scanner->next_token != G_TOKEN_NONE)
578 g_scanner_free_value (&scanner->token, &scanner->value);
580 scanner->token = scanner->next_token;
581 scanner->value = scanner->next_value;
582 scanner->line = scanner->next_line;
583 scanner->position = scanner->next_position;
584 scanner->next_token = G_TOKEN_NONE;
587 g_scanner_get_token_i (scanner,
593 return scanner->token;
597 g_scanner_cur_token (GScanner *scanner)
599 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
601 return scanner->token;
605 g_scanner_cur_value (GScanner *scanner)
611 g_return_val_if_fail (scanner != NULL, v);
613 /* MSC isn't capable of handling return scanner->value; ? */
621 g_scanner_cur_line (GScanner *scanner)
623 g_return_val_if_fail (scanner != NULL, 0);
625 return scanner->line;
629 g_scanner_cur_position (GScanner *scanner)
631 g_return_val_if_fail (scanner != NULL, 0);
633 return scanner->position;
637 g_scanner_eof (GScanner *scanner)
639 g_return_val_if_fail (scanner != NULL, TRUE);
641 return scanner->token == G_TOKEN_EOF || scanner->token == G_TOKEN_ERROR;
645 g_scanner_input_file (GScanner *scanner,
648 g_return_if_fail (scanner != NULL);
649 g_return_if_fail (input_fd >= 0);
651 if (scanner->input_fd >= 0)
652 g_scanner_sync_file_offset (scanner);
654 scanner->token = G_TOKEN_NONE;
655 scanner->value.v_int = 0;
657 scanner->position = 0;
658 scanner->next_token = G_TOKEN_NONE;
660 scanner->input_fd = input_fd;
661 scanner->text = NULL;
662 scanner->text_end = NULL;
664 if (!scanner->buffer)
665 scanner->buffer = g_new (gchar, READ_BUFFER_SIZE + 1);
669 g_scanner_input_text (GScanner *scanner,
673 g_return_if_fail (scanner != NULL);
675 g_return_if_fail (text != NULL);
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 = -1;
689 scanner->text = text;
690 scanner->text_end = text + text_len;
694 g_free (scanner->buffer);
695 scanner->buffer = NULL;
700 g_scanner_peek_next_char (GScanner *scanner)
702 if (scanner->text < scanner->text_end)
704 return *scanner->text;
706 else if (scanner->input_fd >= 0)
711 buffer = scanner->buffer;
714 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
716 while (count == -1 && (errno == EINTR || errno == EAGAIN));
720 scanner->input_fd = -1;
726 scanner->text = buffer;
727 scanner->text_end = buffer + count;
737 g_scanner_sync_file_offset (GScanner *scanner)
739 g_return_if_fail (scanner != NULL);
741 /* for file input, rewind the filedescriptor to the current
742 * buffer position and blow the file read ahead buffer. usefull for
743 * third party uses of our filedescriptor, which hooks onto the current
747 if (scanner->input_fd >= 0 && scanner->text_end > scanner->text)
751 buffered = scanner->text_end - scanner->text;
752 if (lseek (scanner->input_fd, - buffered, SEEK_CUR) >= 0)
754 /* we succeeded, blow our buffer's contents now */
755 scanner->text = NULL;
756 scanner->text_end = NULL;
764 g_scanner_get_char (GScanner *scanner,
770 if (scanner->text < scanner->text_end)
771 fchar = *(scanner->text++);
772 else if (scanner->input_fd >= 0)
777 buffer = scanner->buffer;
780 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
782 while (count == -1 && (errno == EINTR || errno == EAGAIN));
786 scanner->input_fd = -1;
791 scanner->text = buffer + 1;
792 scanner->text_end = buffer + count;
796 g_scanner_sync_file_offset (scanner);
797 scanner->text_end = scanner->text;
798 scanner->input_fd = -1;
819 g_scanner_unexp_token (GScanner *scanner,
820 GTokenType expected_token,
821 const gchar *identifier_spec,
822 const gchar *symbol_spec,
823 const gchar *symbol_name,
824 const gchar *message,
828 guint token_string_len;
829 gchar *expected_string;
830 guint expected_string_len;
831 gchar *message_prefix;
832 gboolean print_unexp;
833 void (*msg_handler) (GScanner*, const gchar*, ...);
835 g_return_if_fail (scanner != NULL);
838 msg_handler = g_scanner_error;
840 msg_handler = g_scanner_warn;
842 if (!identifier_spec)
843 identifier_spec = "identifier";
845 symbol_spec = "symbol";
847 token_string_len = 56;
848 token_string = g_new (gchar, token_string_len + 1);
849 expected_string_len = 64;
850 expected_string = g_new (gchar, expected_string_len + 1);
853 switch (scanner->token)
856 g_snprintf (token_string, token_string_len, "end of file");
860 if (scanner->token >= 1 && scanner->token <= 255)
862 if ((scanner->token >= ' ' && scanner->token <= '~') ||
863 strchr (scanner->config->cset_identifier_first, scanner->token) ||
864 strchr (scanner->config->cset_identifier_nth, scanner->token))
865 g_snprintf (token_string, token_string_len, "character `%c'", scanner->token);
867 g_snprintf (token_string, token_string_len, "character `\\%o'", scanner->token);
870 else if (!scanner->config->symbol_2_token)
872 g_snprintf (token_string, token_string_len, "(unknown) token <%d>", scanner->token);
877 if (expected_token == G_TOKEN_SYMBOL ||
878 (scanner->config->symbol_2_token &&
879 expected_token > G_TOKEN_LAST))
882 g_snprintf (token_string,
885 print_unexp ? "" : "invalid ",
889 g_snprintf (token_string,
892 print_unexp ? "" : "invalid ",
898 expected_token = G_TOKEN_NONE;
899 switch (scanner->value.v_error)
901 case G_ERR_UNEXP_EOF:
902 g_snprintf (token_string, token_string_len, "scanner: unexpected end of file");
905 case G_ERR_UNEXP_EOF_IN_STRING:
906 g_snprintf (token_string, token_string_len, "scanner: unterminated string constant");
909 case G_ERR_UNEXP_EOF_IN_COMMENT:
910 g_snprintf (token_string, token_string_len, "scanner: unterminated comment");
913 case G_ERR_NON_DIGIT_IN_CONST:
914 g_snprintf (token_string, token_string_len, "scanner: non digit in constant");
917 case G_ERR_FLOAT_RADIX:
918 g_snprintf (token_string, token_string_len, "scanner: invalid radix for floating constant");
921 case G_ERR_FLOAT_MALFORMED:
922 g_snprintf (token_string, token_string_len, "scanner: malformed floating constant");
925 case G_ERR_DIGIT_RADIX:
926 g_snprintf (token_string, token_string_len, "scanner: digit is beyond radix");
931 g_snprintf (token_string, token_string_len, "scanner: unknown error");
937 g_snprintf (token_string, token_string_len, "character `%c'", scanner->value.v_char);
940 case G_TOKEN_IDENTIFIER:
941 case G_TOKEN_IDENTIFIER_NULL:
942 if (expected_token == G_TOKEN_IDENTIFIER ||
943 expected_token == G_TOKEN_IDENTIFIER_NULL)
945 g_snprintf (token_string,
948 print_unexp ? "" : "invalid ",
950 scanner->token == G_TOKEN_IDENTIFIER ? scanner->value.v_string : "null");
957 g_snprintf (token_string, token_string_len, "number `%ld'", scanner->value.v_int);
961 g_snprintf (token_string, token_string_len, "number `%.3f'", scanner->value.v_float);
965 if (expected_token == G_TOKEN_STRING)
967 g_snprintf (token_string,
969 "%s%sstring constant \"%s\"",
970 print_unexp ? "" : "invalid ",
971 scanner->value.v_string[0] == 0 ? "empty " : "",
972 scanner->value.v_string);
973 token_string[token_string_len - 2] = '"';
974 token_string[token_string_len - 1] = 0;
977 case G_TOKEN_COMMENT_SINGLE:
978 case G_TOKEN_COMMENT_MULTI:
979 g_snprintf (token_string, token_string_len, "comment");
983 /* somehow the user's parsing code is screwed, there isn't much
984 * we can do about it.
985 * Note, a common case to trigger this is
986 * g_scanner_peek_next_token(); g_scanner_unexp_token();
987 * without an intermediate g_scanner_get_next_token().
989 g_assert_not_reached ();
994 switch (expected_token)
999 g_snprintf (expected_string, expected_string_len, "end of file");
1002 if (expected_token >= 1 && expected_token <= 255)
1004 if ((expected_token >= ' ' && expected_token <= '~') ||
1005 strchr (scanner->config->cset_identifier_first, expected_token) ||
1006 strchr (scanner->config->cset_identifier_nth, expected_token))
1007 g_snprintf (expected_string, expected_string_len, "character `%c'", expected_token);
1009 g_snprintf (expected_string, expected_string_len, "character `\\%o'", expected_token);
1012 else if (!scanner->config->symbol_2_token)
1014 g_snprintf (expected_string, expected_string_len, "(unknown) token <%d>", expected_token);
1018 case G_TOKEN_SYMBOL:
1019 need_valid = (scanner->token == G_TOKEN_SYMBOL ||
1020 (scanner->config->symbol_2_token &&
1021 scanner->token > G_TOKEN_LAST));
1022 g_snprintf (expected_string,
1023 expected_string_len,
1025 need_valid ? "valid " : "",
1027 /* FIXME: should we attempt to lookup the symbol_name for symbol_2_token? */
1030 g_snprintf (expected_string, expected_string_len, "%scharacter",
1031 scanner->token == G_TOKEN_CHAR ? "valid " : "");
1033 case G_TOKEN_BINARY:
1035 g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1036 scanner->token == expected_token ? "valid " : "", tstring);
1040 g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1041 scanner->token == expected_token ? "valid " : "", tstring);
1044 tstring = "integer";
1045 g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1046 scanner->token == expected_token ? "valid " : "", tstring);
1049 tstring = "hexadecimal";
1050 g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1051 scanner->token == expected_token ? "valid " : "", tstring);
1055 g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1056 scanner->token == expected_token ? "valid " : "", tstring);
1058 case G_TOKEN_STRING:
1059 g_snprintf (expected_string,
1060 expected_string_len,
1061 "%sstring constant",
1062 scanner->token == G_TOKEN_STRING ? "valid " : "");
1064 case G_TOKEN_IDENTIFIER:
1065 case G_TOKEN_IDENTIFIER_NULL:
1066 need_valid = (scanner->token == G_TOKEN_IDENTIFIER_NULL ||
1067 scanner->token == G_TOKEN_IDENTIFIER);
1068 g_snprintf (expected_string,
1069 expected_string_len,
1071 need_valid ? "valid " : "",
1074 case G_TOKEN_COMMENT_SINGLE:
1075 tstring = "single-line";
1076 g_snprintf (expected_string, expected_string_len, "%scomment (%s)",
1077 scanner->token == expected_token ? "valid " : "", tstring);
1079 case G_TOKEN_COMMENT_MULTI:
1080 tstring = "multi-line";
1081 g_snprintf (expected_string, expected_string_len, "%scomment (%s)",
1082 scanner->token == expected_token ? "valid " : "", tstring);
1086 /* this is handled upon printout */
1090 if (message && message[0] != 0)
1091 message_prefix = " - ";
1094 message_prefix = "";
1097 if (expected_token == G_TOKEN_ERROR)
1099 msg_handler (scanner,
1100 "failure around %s%s%s",
1105 else if (expected_token == G_TOKEN_NONE)
1108 msg_handler (scanner,
1109 "unexpected %s%s%s",
1114 msg_handler (scanner,
1123 msg_handler (scanner,
1124 "unexpected %s, expected %s%s%s",
1130 msg_handler (scanner,
1131 "%s, expected %s%s%s",
1138 g_free (token_string);
1139 g_free (expected_string);
1143 g_scanner_get_token_i (GScanner *scanner,
1144 GTokenType *token_p,
1145 GTokenValue *value_p,
1151 g_scanner_free_value (token_p, value_p);
1152 g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
1154 while (((*token_p > 0 && *token_p < 256) &&
1155 strchr (scanner->config->cset_skip_characters, *token_p)) ||
1156 (*token_p == G_TOKEN_CHAR &&
1157 strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
1158 (*token_p == G_TOKEN_COMMENT_MULTI &&
1159 scanner->config->skip_comment_multi) ||
1160 (*token_p == G_TOKEN_COMMENT_SINGLE &&
1161 scanner->config->skip_comment_single));
1165 case G_TOKEN_IDENTIFIER:
1166 if (scanner->config->identifier_2_string)
1167 *token_p = G_TOKEN_STRING;
1170 case G_TOKEN_SYMBOL:
1171 if (scanner->config->symbol_2_token)
1172 *token_p = (GTokenType) value_p->v_symbol;
1175 case G_TOKEN_BINARY:
1178 if (scanner->config->numbers_2_int)
1179 *token_p = G_TOKEN_INT;
1186 if (*token_p == G_TOKEN_INT &&
1187 scanner->config->int_2_float)
1189 *token_p = G_TOKEN_FLOAT;
1190 value_p->v_float = value_p->v_int;
1197 g_scanner_get_token_ll (GScanner *scanner,
1198 GTokenType *token_p,
1199 GTokenValue *value_p,
1203 GScannerConfig *config;
1205 gboolean in_comment_multi;
1206 gboolean in_comment_single;
1207 gboolean in_string_sq;
1208 gboolean in_string_dq;
1213 config = scanner->config;
1214 (*value_p).v_int = 0;
1216 if ((scanner->text >= scanner->text_end && scanner->input_fd < 0) ||
1217 scanner->token == G_TOKEN_EOF)
1219 *token_p = G_TOKEN_EOF;
1223 in_comment_multi = FALSE;
1224 in_comment_single = FALSE;
1225 in_string_sq = FALSE;
1226 in_string_dq = FALSE;
1229 do /* while (ch != 0) */
1231 gboolean dotted_float = FALSE;
1233 ch = g_scanner_get_char (scanner, line_p, position_p);
1236 token = G_TOKEN_NONE;
1238 /* this is *evil*, but needed ;(
1239 * we first check for identifier first character, because it
1240 * might interfere with other key chars like slashes or numbers
1242 if (config->scan_identifier &&
1243 ch && strchr (config->cset_identifier_first, ch))
1244 goto identifier_precedence;
1249 token = G_TOKEN_EOF;
1255 if (!config->scan_comment_multi ||
1256 g_scanner_peek_next_char (scanner) != '*')
1258 g_scanner_get_char (scanner, line_p, position_p);
1259 token = G_TOKEN_COMMENT_MULTI;
1260 in_comment_multi = TRUE;
1261 gstring = g_string_new ("");
1262 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1264 if (ch == '*' && g_scanner_peek_next_char (scanner) == '/')
1266 g_scanner_get_char (scanner, line_p, position_p);
1267 in_comment_multi = FALSE;
1271 gstring = g_string_append_c (gstring, ch);
1277 if (!config->scan_string_sq)
1279 token = G_TOKEN_STRING;
1280 in_string_sq = TRUE;
1281 gstring = g_string_new ("");
1282 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1286 in_string_sq = FALSE;
1290 gstring = g_string_append_c (gstring, ch);
1296 if (!config->scan_string_dq)
1298 token = G_TOKEN_STRING;
1299 in_string_dq = TRUE;
1300 gstring = g_string_new ("");
1301 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1305 in_string_dq = FALSE;
1312 ch = g_scanner_get_char (scanner, line_p, position_p);
1322 gstring = g_string_append_c (gstring, '\\');
1326 gstring = g_string_append_c (gstring, '\n');
1330 gstring = g_string_append_c (gstring, '\t');
1334 gstring = g_string_append_c (gstring, '\r');
1338 gstring = g_string_append_c (gstring, '\b');
1342 gstring = g_string_append_c (gstring, '\f');
1354 fchar = g_scanner_peek_next_char (scanner);
1355 if (fchar >= '0' && fchar <= '7')
1357 ch = g_scanner_get_char (scanner, line_p, position_p);
1358 i = i * 8 + ch - '0';
1359 fchar = g_scanner_peek_next_char (scanner);
1360 if (fchar >= '0' && fchar <= '7')
1362 ch = g_scanner_get_char (scanner, line_p, position_p);
1363 i = i * 8 + ch - '0';
1366 gstring = g_string_append_c (gstring, i);
1370 gstring = g_string_append_c (gstring, ch);
1375 gstring = g_string_append_c (gstring, ch);
1382 if (!config->scan_float)
1384 token = G_TOKEN_FLOAT;
1385 dotted_float = TRUE;
1386 ch = g_scanner_get_char (scanner, line_p, position_p);
1387 goto number_parsing;
1390 if (!config->scan_hex_dollar)
1392 token = G_TOKEN_HEX;
1393 ch = g_scanner_get_char (scanner, line_p, position_p);
1394 goto number_parsing;
1397 if (config->scan_octal)
1398 token = G_TOKEN_OCTAL;
1400 token = G_TOKEN_INT;
1401 ch = g_scanner_peek_next_char (scanner);
1402 if (config->scan_hex && (ch == 'x' || ch == 'X'))
1404 token = G_TOKEN_HEX;
1405 g_scanner_get_char (scanner, line_p, position_p);
1406 ch = g_scanner_get_char (scanner, line_p, position_p);
1409 token = G_TOKEN_ERROR;
1410 value.v_error = G_ERR_UNEXP_EOF;
1414 if (g_scanner_char_2_num (ch, 16) < 0)
1416 token = G_TOKEN_ERROR;
1417 value.v_error = G_ERR_DIGIT_RADIX;
1422 else if (config->scan_binary && (ch == 'b' || ch == 'B'))
1424 token = G_TOKEN_BINARY;
1425 g_scanner_get_char (scanner, line_p, position_p);
1426 ch = g_scanner_get_char (scanner, line_p, position_p);
1429 token = G_TOKEN_ERROR;
1430 value.v_error = G_ERR_UNEXP_EOF;
1434 if (g_scanner_char_2_num (ch, 10) < 0)
1436 token = G_TOKEN_ERROR;
1437 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1456 gboolean in_number = TRUE;
1459 if (token == G_TOKEN_NONE)
1460 token = G_TOKEN_INT;
1462 gstring = g_string_new (dotted_float ? "0." : "");
1463 gstring = g_string_append_c (gstring, ch);
1465 do /* while (in_number) */
1469 is_E = token == G_TOKEN_FLOAT && (ch == 'e' || ch == 'E');
1471 ch = g_scanner_peek_next_char (scanner);
1473 if (g_scanner_char_2_num (ch, 36) >= 0 ||
1474 (config->scan_float && ch == '.') ||
1475 (is_E && (ch == '+' || ch == '-')))
1477 ch = g_scanner_get_char (scanner, line_p, position_p);
1482 if (token != G_TOKEN_INT && token != G_TOKEN_OCTAL)
1484 value.v_error = token == G_TOKEN_FLOAT ? G_ERR_FLOAT_MALFORMED : G_ERR_FLOAT_RADIX;
1485 token = G_TOKEN_ERROR;
1490 token = G_TOKEN_FLOAT;
1491 gstring = g_string_append_c (gstring, ch);
1505 gstring = g_string_append_c (gstring, ch);
1510 if (token != G_TOKEN_FLOAT)
1512 token = G_TOKEN_ERROR;
1513 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1517 gstring = g_string_append_c (gstring, ch);
1522 if ((token != G_TOKEN_HEX && !config->scan_float) ||
1523 (token != G_TOKEN_HEX &&
1524 token != G_TOKEN_OCTAL &&
1525 token != G_TOKEN_FLOAT &&
1526 token != G_TOKEN_INT))
1528 token = G_TOKEN_ERROR;
1529 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1534 if (token != G_TOKEN_HEX)
1535 token = G_TOKEN_FLOAT;
1536 gstring = g_string_append_c (gstring, ch);
1541 if (token != G_TOKEN_HEX)
1543 token = G_TOKEN_ERROR;
1544 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1548 gstring = g_string_append_c (gstring, ch);
1560 case G_TOKEN_BINARY:
1561 value.v_binary = strtol (gstring->str, &endptr, 2);
1565 value.v_octal = strtol (gstring->str, &endptr, 8);
1569 value.v_int = strtol (gstring->str, &endptr, 10);
1573 value.v_float = g_strtod (gstring->str, &endptr);
1577 value.v_hex = strtol (gstring->str, &endptr, 16);
1583 if (endptr && *endptr)
1585 token = G_TOKEN_ERROR;
1586 if (*endptr == 'e' || *endptr == 'E')
1587 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1589 value.v_error = G_ERR_DIGIT_RADIX;
1591 g_string_free (gstring, TRUE);
1594 } /* number_parsing:... */
1600 if (config->cpair_comment_single &&
1601 ch == config->cpair_comment_single[0])
1603 token = G_TOKEN_COMMENT_SINGLE;
1604 in_comment_single = TRUE;
1605 gstring = g_string_new ("");
1606 ch = g_scanner_get_char (scanner, line_p, position_p);
1609 if (ch == config->cpair_comment_single[1])
1611 in_comment_single = FALSE;
1616 gstring = g_string_append_c (gstring, ch);
1617 ch = g_scanner_get_char (scanner, line_p, position_p);
1620 else if (config->scan_identifier && ch &&
1621 strchr (config->cset_identifier_first, ch))
1623 identifier_precedence:
1625 if (config->cset_identifier_nth && ch &&
1626 strchr (config->cset_identifier_nth,
1627 g_scanner_peek_next_char (scanner)))
1629 token = G_TOKEN_IDENTIFIER;
1630 gstring = g_string_new ("");
1631 gstring = g_string_append_c (gstring, ch);
1634 ch = g_scanner_get_char (scanner, line_p, position_p);
1635 gstring = g_string_append_c (gstring, ch);
1636 ch = g_scanner_peek_next_char (scanner);
1638 while (ch && strchr (config->cset_identifier_nth, ch));
1641 else if (config->scan_identifier_1char)
1643 token = G_TOKEN_IDENTIFIER;
1644 value.v_identifier = g_new0 (gchar, 2);
1645 value.v_identifier[0] = ch;
1651 if (config->char_2_token)
1655 token = G_TOKEN_CHAR;
1660 } /* default_case:... */
1663 g_assert (ch == 0 && token != G_TOKEN_NONE); /* paranoid */
1667 if (in_comment_multi || in_comment_single ||
1668 in_string_sq || in_string_dq)
1670 token = G_TOKEN_ERROR;
1673 g_string_free (gstring, TRUE);
1677 if (in_comment_multi || in_comment_single)
1678 value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
1679 else /* (in_string_sq || in_string_dq) */
1680 value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
1685 value.v_string = gstring->str;
1686 g_string_free (gstring, FALSE);
1690 if (token == G_TOKEN_IDENTIFIER)
1692 if (config->scan_symbols)
1697 scope_id = scanner->scope_id;
1698 key = g_scanner_lookup_internal (scanner, scope_id, value.v_identifier);
1699 if (!key && scope_id && scanner->config->scope_0_fallback)
1700 key = g_scanner_lookup_internal (scanner, 0, value.v_identifier);
1704 g_free (value.v_identifier);
1705 token = G_TOKEN_SYMBOL;
1706 value.v_symbol = key->value;
1710 if (token == G_TOKEN_IDENTIFIER &&
1711 config->scan_identifier_NULL &&
1712 strlen (value.v_identifier) == 4)
1714 gchar *null_upper = "NULL";
1715 gchar *null_lower = "null";
1717 if (scanner->config->case_sensitive)
1719 if (value.v_identifier[0] == null_upper[0] &&
1720 value.v_identifier[1] == null_upper[1] &&
1721 value.v_identifier[2] == null_upper[2] &&
1722 value.v_identifier[3] == null_upper[3])
1723 token = G_TOKEN_IDENTIFIER_NULL;
1727 if ((value.v_identifier[0] == null_upper[0] ||
1728 value.v_identifier[0] == null_lower[0]) &&
1729 (value.v_identifier[1] == null_upper[1] ||
1730 value.v_identifier[1] == null_lower[1]) &&
1731 (value.v_identifier[2] == null_upper[2] ||
1732 value.v_identifier[2] == null_lower[2]) &&
1733 (value.v_identifier[3] == null_upper[3] ||
1734 value.v_identifier[3] == null_lower[3]))
1735 token = G_TOKEN_IDENTIFIER_NULL;