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++)
384 static inline GScannerKey*
385 g_scanner_lookup_internal (GScanner *scanner,
392 key.scope_id = scope_id;
394 if (!scanner->config->case_sensitive)
399 key.symbol = g_new (gchar, strlen (symbol) + 1);
400 for (d = key.symbol, c = symbol; *c; c++, d++)
403 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
408 key.symbol = (gchar*) symbol;
409 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
416 g_scanner_scope_add_symbol (GScanner *scanner,
423 g_return_if_fail (scanner != NULL);
424 g_return_if_fail (symbol != NULL);
426 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
430 key = g_new (GScannerKey, 1);
431 key->scope_id = scope_id;
432 key->symbol = g_strdup (symbol);
434 if (!scanner->config->case_sensitive)
445 g_hash_table_insert (scanner->symbol_table, key, key);
452 g_scanner_scope_remove_symbol (GScanner *scanner,
458 g_return_if_fail (scanner != NULL);
459 g_return_if_fail (symbol != NULL);
461 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
465 g_hash_table_remove (scanner->symbol_table, key);
466 g_free (key->symbol);
472 g_scanner_lookup_symbol (GScanner *scanner,
478 g_return_val_if_fail (scanner != NULL, NULL);
483 scope_id = scanner->scope_id;
484 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
485 if (!key && scope_id && scanner->config->scope_0_fallback)
486 key = g_scanner_lookup_internal (scanner, 0, symbol);
495 g_scanner_scope_lookup_symbol (GScanner *scanner,
501 g_return_val_if_fail (scanner != NULL, NULL);
506 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
515 g_scanner_set_scope (GScanner *scanner,
520 g_return_val_if_fail (scanner != NULL, 0);
522 old_scope_id = scanner->scope_id;
523 scanner->scope_id = scope_id;
529 g_scanner_foreach_internal (gpointer _key,
540 func = (GHFunc) d[0];
545 if (key->scope_id == *scope_id)
546 func (key->symbol, key->value, user_data);
550 g_scanner_scope_foreach_symbol (GScanner *scanner,
557 g_return_if_fail (scanner != NULL);
559 d[0] = (gpointer) func;
563 g_hash_table_foreach (scanner->symbol_table, g_scanner_foreach_internal, d);
567 g_scanner_freeze_symbol_table (GScanner *scanner)
569 #ifdef G_ENABLE_DEBUG
570 static gboolean first_call = TRUE;
574 g_message ("g_scanner_freeze_symbol_table() and "
575 "g_scanner_thaw_symbol_table() are deprecated.");
578 #endif /* G_ENABLE_DEBUG */
582 g_scanner_thaw_symbol_table (GScanner *scanner)
584 g_scanner_freeze_symbol_table (scanner);
588 g_scanner_peek_next_token (GScanner *scanner)
590 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
592 if (scanner->next_token == G_TOKEN_NONE)
594 scanner->next_line = scanner->line;
595 scanner->next_position = scanner->position;
596 g_scanner_get_token_i (scanner,
597 &scanner->next_token,
598 &scanner->next_value,
600 &scanner->next_position);
603 return scanner->next_token;
607 g_scanner_get_next_token (GScanner *scanner)
609 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
611 if (scanner->next_token != G_TOKEN_NONE)
613 g_scanner_free_value (&scanner->token, &scanner->value);
615 scanner->token = scanner->next_token;
616 scanner->value = scanner->next_value;
617 scanner->line = scanner->next_line;
618 scanner->position = scanner->next_position;
619 scanner->next_token = G_TOKEN_NONE;
622 g_scanner_get_token_i (scanner,
628 return scanner->token;
632 g_scanner_cur_token (GScanner *scanner)
634 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
636 return scanner->token;
640 g_scanner_cur_value (GScanner *scanner)
646 g_return_val_if_fail (scanner != NULL, v);
648 /* MSC isn't capable of handling return scanner->value; ? */
656 g_scanner_cur_line (GScanner *scanner)
658 g_return_val_if_fail (scanner != NULL, 0);
660 return scanner->line;
664 g_scanner_cur_position (GScanner *scanner)
666 g_return_val_if_fail (scanner != NULL, 0);
668 return scanner->position;
672 g_scanner_eof (GScanner *scanner)
674 g_return_val_if_fail (scanner != NULL, TRUE);
676 return scanner->token == G_TOKEN_EOF;
680 g_scanner_input_file (GScanner *scanner,
683 g_return_if_fail (scanner != NULL);
684 g_return_if_fail (input_fd >= 0);
686 if (scanner->input_fd >= 0)
687 g_scanner_sync_file_offset (scanner);
689 scanner->token = G_TOKEN_NONE;
690 scanner->value.v_int = 0;
692 scanner->position = 0;
693 scanner->next_token = G_TOKEN_NONE;
695 scanner->input_fd = input_fd;
696 scanner->text = NULL;
697 scanner->text_end = NULL;
699 if (!scanner->buffer)
700 scanner->buffer = g_new (gchar, READ_BUFFER_SIZE + 1);
704 g_scanner_input_text (GScanner *scanner,
708 g_return_if_fail (scanner != NULL);
710 g_return_if_fail (text != NULL);
714 if (scanner->input_fd >= 0)
715 g_scanner_sync_file_offset (scanner);
717 scanner->token = G_TOKEN_NONE;
718 scanner->value.v_int = 0;
720 scanner->position = 0;
721 scanner->next_token = G_TOKEN_NONE;
723 scanner->input_fd = -1;
724 scanner->text = text;
725 scanner->text_end = text + text_len;
729 g_free (scanner->buffer);
730 scanner->buffer = NULL;
735 g_scanner_peek_next_char (GScanner *scanner)
737 if (scanner->text < scanner->text_end)
739 return *scanner->text;
741 else if (scanner->input_fd >= 0)
746 buffer = scanner->buffer;
749 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
751 while (count == -1 && (errno == EINTR || errno == EAGAIN));
755 scanner->input_fd = -1;
761 scanner->text = buffer;
762 scanner->text_end = buffer + count;
772 g_scanner_sync_file_offset (GScanner *scanner)
774 g_return_if_fail (scanner != NULL);
776 /* for file input, rewind the filedescriptor to the current
777 * buffer position and blow the file read ahead buffer. usefull for
778 * third party uses of our filedescriptor, which hooks onto the current
782 if (scanner->input_fd >= 0 && scanner->text_end > scanner->text)
786 buffered = scanner->text_end - scanner->text;
787 if (lseek (scanner->input_fd, - buffered, SEEK_CUR) >= 0)
789 /* we succeeded, blow our buffer's contents now */
790 scanner->text = NULL;
791 scanner->text_end = NULL;
799 g_scanner_get_char (GScanner *scanner,
805 if (scanner->text < scanner->text_end)
806 fchar = *(scanner->text++);
807 else if (scanner->input_fd >= 0)
812 buffer = scanner->buffer;
815 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
817 while (count == -1 && (errno == EINTR || errno == EAGAIN));
821 scanner->input_fd = -1;
826 scanner->text = buffer + 1;
827 scanner->text_end = buffer + count;
831 g_scanner_sync_file_offset (scanner);
832 scanner->text_end = scanner->text;
833 scanner->input_fd = -1;
854 g_scanner_unexp_token (GScanner *scanner,
855 GTokenType expected_token,
856 const gchar *identifier_spec,
857 const gchar *symbol_spec,
858 const gchar *symbol_name,
859 const gchar *message,
863 guint token_string_len;
864 gchar *expected_string;
865 guint expected_string_len;
866 gchar *message_prefix;
867 gboolean print_unexp;
868 void (*msg_handler) (GScanner*, const gchar*, ...);
870 g_return_if_fail (scanner != NULL);
873 msg_handler = g_scanner_error;
875 msg_handler = g_scanner_warn;
877 if (!identifier_spec)
878 identifier_spec = "identifier";
880 symbol_spec = "symbol";
882 token_string_len = 56;
883 token_string = g_new (gchar, token_string_len + 1);
884 expected_string_len = 64;
885 expected_string = g_new (gchar, expected_string_len + 1);
888 switch (scanner->token)
891 g_snprintf (token_string, token_string_len, "end of file");
895 if (scanner->token >= 1 && scanner->token <= 255)
897 if ((scanner->token >= ' ' && scanner->token <= '~') ||
898 strchr (scanner->config->cset_identifier_first, scanner->token) ||
899 strchr (scanner->config->cset_identifier_nth, scanner->token))
900 g_snprintf (token_string, expected_string_len, "character `%c'", scanner->token);
902 g_snprintf (token_string, expected_string_len, "character `\\%o'", scanner->token);
905 else if (!scanner->config->symbol_2_token)
907 g_snprintf (token_string, token_string_len, "(unknown) token <%d>", scanner->token);
912 if (expected_token == G_TOKEN_SYMBOL ||
913 (scanner->config->symbol_2_token &&
914 expected_token > G_TOKEN_LAST))
917 g_snprintf (token_string,
920 print_unexp ? "" : "invalid ",
924 g_snprintf (token_string,
927 print_unexp ? "" : "invalid ",
933 expected_token = G_TOKEN_NONE;
934 switch (scanner->value.v_error)
936 case G_ERR_UNEXP_EOF:
937 g_snprintf (token_string, token_string_len, "scanner: unexpected end of file");
940 case G_ERR_UNEXP_EOF_IN_STRING:
941 g_snprintf (token_string, token_string_len, "scanner: unterminated string constant");
944 case G_ERR_UNEXP_EOF_IN_COMMENT:
945 g_snprintf (token_string, token_string_len, "scanner: unterminated comment");
948 case G_ERR_NON_DIGIT_IN_CONST:
949 g_snprintf (token_string, token_string_len, "scanner: non digit in constant");
952 case G_ERR_FLOAT_RADIX:
953 g_snprintf (token_string, token_string_len, "scanner: invalid radix for floating constant");
956 case G_ERR_FLOAT_MALFORMED:
957 g_snprintf (token_string, token_string_len, "scanner: malformed floating constant");
960 case G_ERR_DIGIT_RADIX:
961 g_snprintf (token_string, token_string_len, "scanner: digit is beyond radix");
966 g_snprintf (token_string, token_string_len, "scanner: unknown error");
972 g_snprintf (token_string, token_string_len, "character `%c'", scanner->value.v_char);
975 case G_TOKEN_IDENTIFIER:
976 case G_TOKEN_IDENTIFIER_NULL:
977 if (expected_token == G_TOKEN_IDENTIFIER ||
978 expected_token == G_TOKEN_IDENTIFIER_NULL)
980 g_snprintf (token_string,
983 print_unexp ? "" : "invalid ",
985 scanner->token == G_TOKEN_IDENTIFIER ? scanner->value.v_string : "null");
992 g_snprintf (token_string, token_string_len, "number `%ld'", scanner->value.v_int);
996 g_snprintf (token_string, token_string_len, "number `%.3f'", scanner->value.v_float);
1000 if (expected_token == G_TOKEN_STRING)
1001 print_unexp = FALSE;
1002 g_snprintf (token_string,
1004 "%s%sstring constant \"%s\"",
1005 print_unexp ? "" : "invalid ",
1006 scanner->value.v_string[0] == 0 ? "empty " : "",
1007 scanner->value.v_string);
1008 token_string[token_string_len - 2] = '"';
1009 token_string[token_string_len - 1] = 0;
1012 case G_TOKEN_COMMENT_SINGLE:
1013 case G_TOKEN_COMMENT_MULTI:
1014 g_snprintf (token_string, token_string_len, "comment");
1018 /* somehow the user's parsing code is screwed, there isn't much
1019 * we can do about it.
1020 * Note, a common case to trigger this is
1021 * g_scanner_peek_next_token(); g_scanner_unexp_token();
1022 * without an intermediate g_scanner_get_next_token().
1024 g_assert_not_reached ();
1029 switch (expected_token)
1031 gboolean need_valid;
1034 if (expected_token >= 1 && expected_token <= 255)
1036 if ((expected_token >= ' ' && expected_token <= '~') ||
1037 strchr (scanner->config->cset_identifier_first, expected_token) ||
1038 strchr (scanner->config->cset_identifier_nth, expected_token))
1039 g_snprintf (expected_string, expected_string_len, "character `%c'", expected_token);
1041 g_snprintf (expected_string, expected_string_len, "character `\\%o'", expected_token);
1044 else if (!scanner->config->symbol_2_token)
1046 g_snprintf (expected_string, expected_string_len, "(unknown) token <%d>", expected_token);
1050 case G_TOKEN_SYMBOL:
1051 need_valid = (scanner->token == G_TOKEN_SYMBOL ||
1052 (scanner->config->symbol_2_token &&
1053 scanner->token > G_TOKEN_LAST));
1054 g_snprintf (expected_string,
1055 expected_string_len,
1057 need_valid ? "valid " : "",
1059 /* FIXME: should we attempt to lookup the symbol_name for symbol_2_token? */
1063 g_snprintf (expected_string, expected_string_len, "number (integer)");
1067 g_snprintf (expected_string, expected_string_len, "number (float)");
1070 case G_TOKEN_STRING:
1071 g_snprintf (expected_string,
1072 expected_string_len,
1073 "%sstring constant",
1074 scanner->token == G_TOKEN_STRING ? "valid " : "");
1077 case G_TOKEN_IDENTIFIER:
1078 case G_TOKEN_IDENTIFIER_NULL:
1079 g_snprintf (expected_string,
1080 expected_string_len,
1082 (scanner->token == G_TOKEN_IDENTIFIER_NULL ||
1083 scanner->token == G_TOKEN_IDENTIFIER ? "valid " : ""),
1088 g_snprintf (expected_string, expected_string_len, "end of file");
1095 if (message && message[0] != 0)
1096 message_prefix = " - ";
1099 message_prefix = "";
1103 if (expected_token != G_TOKEN_NONE)
1106 msg_handler (scanner,
1107 "unexpected %s, expected %s%s%s",
1113 msg_handler (scanner,
1114 "%s, expected %s%s%s",
1123 msg_handler (scanner,
1124 "unexpected %s%s%s",
1129 msg_handler (scanner,
1136 g_free (token_string);
1137 g_free (expected_string);
1141 g_scanner_stat_mode (const gchar *filename)
1143 struct stat *stat_buf;
1146 stat_buf = g_new0 (struct stat, 1);
1148 lstat (filename, stat_buf);
1150 stat (filename, stat_buf);
1152 st_mode = stat_buf->st_mode;
1160 g_scanner_get_token_i (GScanner *scanner,
1161 GTokenType *token_p,
1162 GTokenValue *value_p,
1168 g_scanner_free_value (token_p, value_p);
1169 g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
1171 while (((*token_p > 0 && *token_p < 256) &&
1172 strchr (scanner->config->cset_skip_characters, *token_p)) ||
1173 (*token_p == G_TOKEN_CHAR &&
1174 strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
1175 (*token_p == G_TOKEN_COMMENT_MULTI &&
1176 scanner->config->skip_comment_multi) ||
1177 (*token_p == G_TOKEN_COMMENT_SINGLE &&
1178 scanner->config->skip_comment_single));
1182 case G_TOKEN_IDENTIFIER:
1183 if (scanner->config->identifier_2_string)
1184 *token_p = G_TOKEN_STRING;
1187 case G_TOKEN_SYMBOL:
1188 if (scanner->config->symbol_2_token)
1189 *token_p = (GTokenType) value_p->v_symbol;
1192 case G_TOKEN_BINARY:
1195 if (scanner->config->numbers_2_int)
1196 *token_p = G_TOKEN_INT;
1203 if (*token_p == G_TOKEN_INT &&
1204 scanner->config->int_2_float)
1206 *token_p = G_TOKEN_FLOAT;
1207 value_p->v_float = value_p->v_int;
1214 g_scanner_get_token_ll (GScanner *scanner,
1215 GTokenType *token_p,
1216 GTokenValue *value_p,
1220 GScannerConfig *config;
1222 gboolean in_comment_multi;
1223 gboolean in_comment_single;
1224 gboolean in_string_sq;
1225 gboolean in_string_dq;
1230 config = scanner->config;
1231 (*value_p).v_int = 0;
1233 if ((scanner->text >= scanner->text_end && scanner->input_fd < 0) ||
1234 scanner->token == G_TOKEN_EOF)
1236 *token_p = G_TOKEN_EOF;
1240 in_comment_multi = FALSE;
1241 in_comment_single = FALSE;
1242 in_string_sq = FALSE;
1243 in_string_dq = FALSE;
1246 do /* while (ch != 0) */
1248 gboolean dotted_float = FALSE;
1250 ch = g_scanner_get_char (scanner, line_p, position_p);
1253 token = G_TOKEN_NONE;
1255 /* this is *evil*, but needed ;(
1256 * we first check for identifier first character, because it
1257 * might interfere with other key chars like slashes or numbers
1259 if (config->scan_identifier &&
1260 ch && strchr (config->cset_identifier_first, ch))
1261 goto identifier_precedence;
1266 token = G_TOKEN_EOF;
1272 if (!config->scan_comment_multi ||
1273 g_scanner_peek_next_char (scanner) != '*')
1275 g_scanner_get_char (scanner, line_p, position_p);
1276 token = G_TOKEN_COMMENT_MULTI;
1277 in_comment_multi = TRUE;
1278 gstring = g_string_new ("");
1279 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1281 if (ch == '*' && g_scanner_peek_next_char (scanner) == '/')
1283 g_scanner_get_char (scanner, line_p, position_p);
1284 in_comment_multi = FALSE;
1288 gstring = g_string_append_c (gstring, ch);
1294 if (!config->scan_string_sq)
1296 token = G_TOKEN_STRING;
1297 in_string_sq = TRUE;
1298 gstring = g_string_new ("");
1299 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1303 in_string_sq = FALSE;
1307 gstring = g_string_append_c (gstring, ch);
1313 if (!config->scan_string_dq)
1315 token = G_TOKEN_STRING;
1316 in_string_dq = TRUE;
1317 gstring = g_string_new ("");
1318 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1322 in_string_dq = FALSE;
1329 ch = g_scanner_get_char (scanner, line_p, position_p);
1339 gstring = g_string_append_c (gstring, '\\');
1343 gstring = g_string_append_c (gstring, '\n');
1347 gstring = g_string_append_c (gstring, '\t');
1351 gstring = g_string_append_c (gstring, '\r');
1355 gstring = g_string_append_c (gstring, '\b');
1359 gstring = g_string_append_c (gstring, '\f');
1371 fchar = g_scanner_peek_next_char (scanner);
1372 if (fchar >= '0' && fchar <= '7')
1374 ch = g_scanner_get_char (scanner, line_p, position_p);
1375 i = i * 8 + ch - '0';
1376 fchar = g_scanner_peek_next_char (scanner);
1377 if (fchar >= '0' && fchar <= '7')
1379 ch = g_scanner_get_char (scanner, line_p, position_p);
1380 i = i * 8 + ch - '0';
1383 gstring = g_string_append_c (gstring, i);
1387 gstring = g_string_append_c (gstring, ch);
1392 gstring = g_string_append_c (gstring, ch);
1399 if (!config->scan_float)
1401 token = G_TOKEN_FLOAT;
1402 dotted_float = TRUE;
1403 ch = g_scanner_get_char (scanner, line_p, position_p);
1404 goto number_parsing;
1407 if (!config->scan_hex_dollar)
1409 token = G_TOKEN_HEX;
1410 ch = g_scanner_get_char (scanner, line_p, position_p);
1411 goto number_parsing;
1414 if (config->scan_octal)
1415 token = G_TOKEN_OCTAL;
1417 token = G_TOKEN_INT;
1418 ch = g_scanner_peek_next_char (scanner);
1419 if (config->scan_hex && (ch == 'x' || ch == 'X'))
1421 token = G_TOKEN_HEX;
1422 g_scanner_get_char (scanner, line_p, position_p);
1423 ch = g_scanner_get_char (scanner, line_p, position_p);
1426 token = G_TOKEN_ERROR;
1427 value.v_error = G_ERR_UNEXP_EOF;
1431 if (g_scanner_char_2_num (ch, 16) < 0)
1433 token = G_TOKEN_ERROR;
1434 value.v_error = G_ERR_DIGIT_RADIX;
1439 else if (config->scan_binary && (ch == 'b' || ch == 'B'))
1441 token = G_TOKEN_BINARY;
1442 g_scanner_get_char (scanner, line_p, position_p);
1443 ch = g_scanner_get_char (scanner, line_p, position_p);
1446 token = G_TOKEN_ERROR;
1447 value.v_error = G_ERR_UNEXP_EOF;
1451 if (g_scanner_char_2_num (ch, 10) < 0)
1453 token = G_TOKEN_ERROR;
1454 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1473 gboolean in_number = TRUE;
1476 if (token == G_TOKEN_NONE)
1477 token = G_TOKEN_INT;
1479 gstring = g_string_new (dotted_float ? "0." : "");
1480 gstring = g_string_append_c (gstring, ch);
1482 do /* while (in_number) */
1486 is_E = token == G_TOKEN_FLOAT && (ch == 'e' || ch == 'E');
1488 ch = g_scanner_peek_next_char (scanner);
1490 if (g_scanner_char_2_num (ch, 36) >= 0 ||
1491 (config->scan_float && ch == '.') ||
1492 (is_E && (ch == '+' || ch == '-')))
1494 ch = g_scanner_get_char (scanner, line_p, position_p);
1499 if (token != G_TOKEN_INT && token != G_TOKEN_OCTAL)
1501 value.v_error = token == G_TOKEN_FLOAT ? G_ERR_FLOAT_MALFORMED : G_ERR_FLOAT_RADIX;
1502 token = G_TOKEN_ERROR;
1507 token = G_TOKEN_FLOAT;
1508 gstring = g_string_append_c (gstring, ch);
1522 gstring = g_string_append_c (gstring, ch);
1527 if (token != G_TOKEN_FLOAT)
1529 token = G_TOKEN_ERROR;
1530 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1534 gstring = g_string_append_c (gstring, ch);
1539 if ((token != G_TOKEN_HEX && !config->scan_float) ||
1540 (token != G_TOKEN_HEX &&
1541 token != G_TOKEN_OCTAL &&
1542 token != G_TOKEN_FLOAT &&
1543 token != G_TOKEN_INT))
1545 token = G_TOKEN_ERROR;
1546 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1551 if (token != G_TOKEN_HEX)
1552 token = G_TOKEN_FLOAT;
1553 gstring = g_string_append_c (gstring, ch);
1558 if (token != G_TOKEN_HEX)
1560 token = G_TOKEN_ERROR;
1561 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1565 gstring = g_string_append_c (gstring, ch);
1577 case G_TOKEN_BINARY:
1578 value.v_binary = strtol (gstring->str, &endptr, 2);
1582 value.v_octal = strtol (gstring->str, &endptr, 8);
1586 value.v_int = strtol (gstring->str, &endptr, 10);
1590 value.v_float = g_strtod (gstring->str, &endptr);
1594 value.v_hex = strtol (gstring->str, &endptr, 16);
1600 if (endptr && *endptr)
1602 token = G_TOKEN_ERROR;
1603 if (*endptr == 'e' || *endptr == 'E')
1604 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1606 value.v_error = G_ERR_DIGIT_RADIX;
1608 g_string_free (gstring, TRUE);
1611 } /* number_parsing:... */
1617 if (config->cpair_comment_single &&
1618 ch == config->cpair_comment_single[0])
1620 token = G_TOKEN_COMMENT_SINGLE;
1621 in_comment_single = TRUE;
1622 gstring = g_string_new ("");
1623 ch = g_scanner_get_char (scanner, line_p, position_p);
1626 if (ch == config->cpair_comment_single[1])
1628 in_comment_single = FALSE;
1633 gstring = g_string_append_c (gstring, ch);
1634 ch = g_scanner_get_char (scanner, line_p, position_p);
1637 else if (config->scan_identifier && ch &&
1638 strchr (config->cset_identifier_first, ch))
1640 identifier_precedence:
1642 if (config->cset_identifier_nth && ch &&
1643 strchr (config->cset_identifier_nth,
1644 g_scanner_peek_next_char (scanner)))
1646 token = G_TOKEN_IDENTIFIER;
1647 gstring = g_string_new ("");
1648 gstring = g_string_append_c (gstring, ch);
1651 ch = g_scanner_get_char (scanner, line_p, position_p);
1652 gstring = g_string_append_c (gstring, ch);
1653 ch = g_scanner_peek_next_char (scanner);
1655 while (ch && strchr (config->cset_identifier_nth, ch));
1658 else if (config->scan_identifier_1char)
1660 token = G_TOKEN_IDENTIFIER;
1661 value.v_identifier = g_new0 (gchar, 2);
1662 value.v_identifier[0] = ch;
1668 if (config->char_2_token)
1672 token = G_TOKEN_CHAR;
1677 } /* default_case:... */
1680 g_assert (ch == 0 && token != G_TOKEN_NONE); /* paranoid */
1684 if (in_comment_multi || in_comment_single ||
1685 in_string_sq || in_string_dq)
1687 token = G_TOKEN_ERROR;
1690 g_string_free (gstring, TRUE);
1694 if (in_comment_multi || in_comment_single)
1695 value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
1696 else /* (in_string_sq || in_string_dq) */
1697 value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
1702 value.v_string = gstring->str;
1703 g_string_free (gstring, FALSE);
1707 if (token == G_TOKEN_IDENTIFIER)
1709 if (config->scan_symbols)
1714 scope_id = scanner->scope_id;
1715 key = g_scanner_lookup_internal (scanner, scope_id, value.v_identifier);
1716 if (!key && scope_id && scanner->config->scope_0_fallback)
1717 key = g_scanner_lookup_internal (scanner, 0, value.v_identifier);
1721 g_free (value.v_identifier);
1722 token = G_TOKEN_SYMBOL;
1723 value.v_symbol = key->value;
1727 if (token == G_TOKEN_IDENTIFIER &&
1728 config->scan_identifier_NULL &&
1729 strlen (value.v_identifier) == 4)
1731 gchar *null_upper = "NULL";
1732 gchar *null_lower = "null";
1734 if (scanner->config->case_sensitive)
1736 if (value.v_identifier[0] == null_upper[0] &&
1737 value.v_identifier[1] == null_upper[1] &&
1738 value.v_identifier[2] == null_upper[2] &&
1739 value.v_identifier[3] == null_upper[3])
1740 token = G_TOKEN_IDENTIFIER_NULL;
1744 if ((value.v_identifier[0] == null_upper[0] ||
1745 value.v_identifier[0] == null_lower[0]) &&
1746 (value.v_identifier[1] == null_upper[1] ||
1747 value.v_identifier[1] == null_lower[1]) &&
1748 (value.v_identifier[2] == null_upper[2] ||
1749 value.v_identifier[2] == null_lower[2]) &&
1750 (value.v_identifier[3] == null_upper[3] ||
1751 value.v_identifier[3] == null_lower[3]))
1752 token = G_TOKEN_IDENTIFIER_NULL;