1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * GScanner: Flexible lexical scanner for general purpose.
5 * Copyright (C) 1997, 1998 Tim Janik
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
27 #define __gscanner_c__
42 #include <sys/types.h> /* needed for sys/stat.h */
45 #include <io.h> /* For _read() */
49 #define to_lower(c) ( \
51 ( (((guchar)(c))>='A' && ((guchar)(c))<='Z') * ('a'-'A') ) | \
52 ( (((guchar)(c))>=192 && ((guchar)(c))<=214) * (224-192) ) | \
53 ( (((guchar)(c))>=216 && ((guchar)(c))<=222) * (248-216) ) | \
57 #define READ_BUFFER_SIZE (4000)
60 /* --- typedefs --- */
61 typedef struct _GScannerKey GScannerKey;
72 /* --- variables --- */
73 static GScannerConfig g_scanner_config_template =
77 ) /* cset_skip_characters */,
82 ) /* cset_identifier_first */,
89 ) /* cset_identifier_nth */,
90 ( "#\n" ) /* cpair_comment_single */,
92 FALSE /* case_sensitive */,
94 TRUE /* skip_comment_multi */,
95 TRUE /* skip_comment_single */,
96 TRUE /* scan_comment_multi */,
97 TRUE /* scan_identifier */,
98 FALSE /* scan_identifier_1char */,
99 FALSE /* scan_identifier_NULL */,
100 TRUE /* scan_symbols */,
101 FALSE /* scan_binary */,
102 TRUE /* scan_octal */,
103 TRUE /* scan_float */,
105 FALSE /* scan_hex_dollar */,
106 TRUE /* scan_string_sq */,
107 TRUE /* scan_string_dq */,
108 TRUE /* numbers_2_int */,
109 FALSE /* int_2_float */,
110 FALSE /* identifier_2_string */,
111 TRUE /* char_2_token */,
112 FALSE /* symbol_2_token */,
113 FALSE /* scope_0_fallback */,
117 /* --- prototypes --- */
119 GScannerKey* g_scanner_lookup_internal (GScanner *scanner,
121 const gchar *symbol);
122 static gint g_scanner_key_equal (gconstpointer v1,
124 static guint g_scanner_key_hash (gconstpointer v);
125 static void g_scanner_get_token_ll (GScanner *scanner,
127 GTokenValue *value_p,
130 static void g_scanner_get_token_i (GScanner *scanner,
132 GTokenValue *value_p,
136 static guchar g_scanner_peek_next_char (GScanner *scanner);
137 static guchar g_scanner_get_char (GScanner *scanner,
140 static void g_scanner_msg_handler (GScanner *scanner,
145 /* --- functions --- */
147 g_scanner_char_2_num (guchar c,
150 if (c >= '0' && c <= '9')
152 else if (c >= 'A' && c <= 'Z')
154 else if (c >= 'a' && c <= 'z')
166 g_scanner_new (GScannerConfig *config_templ)
168 register GScanner *scanner;
171 config_templ = &g_scanner_config_template;
173 scanner = g_new0 (GScanner, 1);
175 scanner->user_data = NULL;
176 scanner->max_parse_errors = 0;
177 scanner->parse_errors = 0;
178 scanner->input_name = NULL;
179 scanner->derived_data = NULL;
181 scanner->config = g_new0 (GScannerConfig, 1);
183 scanner->config->case_sensitive = config_templ->case_sensitive;
184 scanner->config->cset_skip_characters = config_templ->cset_skip_characters;
185 scanner->config->cset_identifier_first= config_templ->cset_identifier_first;
186 scanner->config->cset_identifier_nth = config_templ->cset_identifier_nth;
187 scanner->config->cpair_comment_single = config_templ->cpair_comment_single;
188 scanner->config->skip_comment_multi = config_templ->skip_comment_multi;
189 scanner->config->skip_comment_single = config_templ->skip_comment_single;
190 scanner->config->scan_comment_multi = config_templ->scan_comment_multi;
191 scanner->config->scan_identifier = config_templ->scan_identifier;
192 scanner->config->scan_identifier_1char= config_templ->scan_identifier_1char;
193 scanner->config->scan_identifier_NULL = config_templ->scan_identifier_NULL;
194 scanner->config->scan_symbols = config_templ->scan_symbols;
195 scanner->config->scan_binary = config_templ->scan_binary;
196 scanner->config->scan_octal = config_templ->scan_octal;
197 scanner->config->scan_float = config_templ->scan_float;
198 scanner->config->scan_hex = config_templ->scan_hex;
199 scanner->config->scan_hex_dollar = config_templ->scan_hex_dollar;
200 scanner->config->scan_string_sq = config_templ->scan_string_sq;
201 scanner->config->scan_string_dq = config_templ->scan_string_dq;
202 scanner->config->numbers_2_int = config_templ->numbers_2_int;
203 scanner->config->int_2_float = config_templ->int_2_float;
204 scanner->config->identifier_2_string = config_templ->identifier_2_string;
205 scanner->config->char_2_token = config_templ->char_2_token;
206 scanner->config->symbol_2_token = config_templ->symbol_2_token;
207 scanner->config->scope_0_fallback = config_templ->scope_0_fallback;
209 scanner->token = G_TOKEN_NONE;
210 scanner->value.v_int = 0;
212 scanner->position = 0;
214 scanner->next_token = G_TOKEN_NONE;
215 scanner->next_value.v_int = 0;
216 scanner->next_line = 1;
217 scanner->next_position = 0;
219 scanner->symbol_table = g_hash_table_new (g_scanner_key_hash, g_scanner_key_equal);
220 scanner->input_fd = -1;
221 scanner->text = NULL;
222 scanner->text_end = NULL;
223 scanner->buffer = NULL;
224 scanner->scope_id = 0;
226 scanner->msg_handler = g_scanner_msg_handler;
232 g_scanner_free_value (GTokenType *token_p,
233 GTokenValue *value_p)
238 case G_TOKEN_IDENTIFIER:
239 case G_TOKEN_IDENTIFIER_NULL:
240 case G_TOKEN_COMMENT_SINGLE:
241 case G_TOKEN_COMMENT_MULTI:
242 g_free (value_p->v_string);
249 *token_p = G_TOKEN_NONE;
253 g_scanner_destroy_symbol_table_entry (gpointer _key,
257 GScannerKey *key = _key;
259 g_free (key->symbol);
264 g_scanner_destroy (GScanner *scanner)
266 g_return_if_fail (scanner != NULL);
268 g_hash_table_foreach (scanner->symbol_table,
269 g_scanner_destroy_symbol_table_entry, NULL);
270 g_hash_table_destroy (scanner->symbol_table);
271 g_scanner_free_value (&scanner->token, &scanner->value);
272 g_scanner_free_value (&scanner->next_token, &scanner->next_value);
273 g_free (scanner->config);
274 g_free (scanner->buffer);
279 g_scanner_msg_handler (GScanner *scanner,
283 g_return_if_fail (scanner != NULL);
285 fprintf (stdout, "%s:%d: ", scanner->input_name, scanner->line);
287 fprintf (stdout, "error: ");
288 fprintf (stdout, "%s\n", message);
292 g_scanner_error (GScanner *scanner,
296 g_return_if_fail (scanner != NULL);
297 g_return_if_fail (format != NULL);
299 scanner->parse_errors++;
301 if (scanner->msg_handler)
306 va_start (args, format);
307 string = g_strdup_vprintf (format, args);
310 scanner->msg_handler (scanner, string, TRUE);
317 g_scanner_warn (GScanner *scanner,
321 g_return_if_fail (scanner != NULL);
322 g_return_if_fail (format != NULL);
324 if (scanner->msg_handler)
329 va_start (args, format);
330 string = g_strdup_vprintf (format, args);
333 scanner->msg_handler (scanner, string, FALSE);
340 g_scanner_key_equal (gconstpointer v1,
343 register const GScannerKey *key1 = v1;
344 register const GScannerKey *key2 = v2;
346 return (key1->scope_id == key2->scope_id) && (strcmp (key1->symbol, key2->symbol) == 0);
350 g_scanner_key_hash (gconstpointer v)
352 register const GScannerKey *key = v;
357 for (c = key->symbol; *c; c++)
373 static inline GScannerKey*
374 g_scanner_lookup_internal (GScanner *scanner,
378 register GScannerKey *key_p;
381 key.scope_id = scope_id;
383 if (!scanner->config->case_sensitive)
386 register const gchar *c;
388 key.symbol = g_new (gchar, strlen (symbol) + 1);
389 for (d = key.symbol, c = symbol; *c; c++, d++)
392 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
397 key.symbol = (gchar*) symbol;
398 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
405 g_scanner_scope_add_symbol (GScanner *scanner,
410 register GScannerKey *key;
412 g_return_if_fail (scanner != NULL);
413 g_return_if_fail (symbol != NULL);
415 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
419 key = g_new (GScannerKey, 1);
420 key->scope_id = scope_id;
421 key->symbol = g_strdup (symbol);
423 if (!scanner->config->case_sensitive)
434 g_hash_table_insert (scanner->symbol_table, key, key);
441 g_scanner_scope_remove_symbol (GScanner *scanner,
445 register GScannerKey *key;
447 g_return_if_fail (scanner != NULL);
448 g_return_if_fail (symbol != NULL);
450 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
454 g_hash_table_remove (scanner->symbol_table, key);
455 g_free (key->symbol);
461 g_scanner_lookup_symbol (GScanner *scanner,
464 register GScannerKey *key;
465 register guint scope_id;
467 g_return_val_if_fail (scanner != NULL, NULL);
472 scope_id = scanner->scope_id;
473 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
474 if (!key && scope_id && scanner->config->scope_0_fallback)
475 key = g_scanner_lookup_internal (scanner, 0, symbol);
484 g_scanner_scope_lookup_symbol (GScanner *scanner,
488 register GScannerKey *key;
490 g_return_val_if_fail (scanner != NULL, NULL);
495 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
504 g_scanner_set_scope (GScanner *scanner,
507 register guint old_scope_id;
509 g_return_val_if_fail (scanner != NULL, 0);
511 old_scope_id = scanner->scope_id;
512 scanner->scope_id = scope_id;
518 g_scanner_foreach_internal (gpointer _key,
522 register GScannerKey *key;
523 register gpointer *d;
524 register GHFunc func;
525 register gpointer user_data;
526 register guint *scope_id;
529 func = (GHFunc) d[0];
534 if (key->scope_id == *scope_id)
535 func (key->symbol, key->value, user_data);
539 g_scanner_scope_foreach_symbol (GScanner *scanner,
546 g_return_if_fail (scanner != NULL);
548 d[0] = (gpointer) func;
552 g_hash_table_foreach (scanner->symbol_table, g_scanner_foreach_internal, d);
556 g_scanner_freeze_symbol_table (GScanner *scanner)
558 g_return_if_fail (scanner != NULL);
560 g_hash_table_freeze (scanner->symbol_table);
564 g_scanner_thaw_symbol_table (GScanner *scanner)
566 g_return_if_fail (scanner != NULL);
568 g_hash_table_thaw (scanner->symbol_table);
572 g_scanner_peek_next_token (GScanner *scanner)
574 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
576 if (scanner->next_token == G_TOKEN_NONE)
578 scanner->next_line = scanner->line;
579 scanner->next_position = scanner->position;
580 g_scanner_get_token_i (scanner,
581 &scanner->next_token,
582 &scanner->next_value,
584 &scanner->next_position);
587 return scanner->next_token;
591 g_scanner_get_next_token (GScanner *scanner)
593 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
595 if (scanner->next_token != G_TOKEN_NONE)
597 g_scanner_free_value (&scanner->token, &scanner->value);
599 scanner->token = scanner->next_token;
600 scanner->value = scanner->next_value;
601 scanner->line = scanner->next_line;
602 scanner->position = scanner->next_position;
603 scanner->next_token = G_TOKEN_NONE;
606 g_scanner_get_token_i (scanner,
612 return scanner->token;
616 g_scanner_cur_token (GScanner *scanner)
618 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
620 return scanner->token;
624 g_scanner_cur_value (GScanner *scanner)
630 g_return_val_if_fail (scanner != NULL, v);
632 /* MSC isn't capable of handling return scanner->value; ? */
640 g_scanner_cur_line (GScanner *scanner)
642 g_return_val_if_fail (scanner != NULL, 0);
644 return scanner->line;
648 g_scanner_cur_position (GScanner *scanner)
650 g_return_val_if_fail (scanner != NULL, 0);
652 return scanner->position;
656 g_scanner_eof (GScanner *scanner)
658 g_return_val_if_fail (scanner != NULL, TRUE);
660 return scanner->token == G_TOKEN_EOF;
664 g_scanner_input_file (GScanner *scanner,
667 g_return_if_fail (scanner != NULL);
668 g_return_if_fail (input_fd >= 0);
670 if (scanner->input_fd >= 0)
671 g_scanner_sync_file_offset (scanner);
673 scanner->token = G_TOKEN_NONE;
674 scanner->value.v_int = 0;
676 scanner->position = 0;
677 scanner->next_token = G_TOKEN_NONE;
679 scanner->input_fd = input_fd;
680 scanner->text = NULL;
681 scanner->text_end = NULL;
683 if (!scanner->buffer)
684 scanner->buffer = g_new (gchar, READ_BUFFER_SIZE + 1);
688 g_scanner_input_text (GScanner *scanner,
692 g_return_if_fail (scanner != NULL);
694 g_return_if_fail (text != NULL);
698 if (scanner->input_fd >= 0)
699 g_scanner_sync_file_offset (scanner);
701 scanner->token = G_TOKEN_NONE;
702 scanner->value.v_int = 0;
704 scanner->position = 0;
705 scanner->next_token = G_TOKEN_NONE;
707 scanner->input_fd = -1;
708 scanner->text = text;
709 scanner->text_end = text + text_len;
713 g_free (scanner->buffer);
714 scanner->buffer = NULL;
719 g_scanner_peek_next_char (GScanner *scanner)
721 if (scanner->text < scanner->text_end)
723 return *scanner->text;
725 else if (scanner->input_fd >= 0)
728 register gchar *buffer;
730 buffer = scanner->buffer;
733 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
735 while (count == -1 && (errno == EINTR || errno == EAGAIN));
739 scanner->input_fd = -1;
745 scanner->text = buffer;
746 scanner->text_end = buffer + count;
756 g_scanner_sync_file_offset (GScanner *scanner)
758 g_return_if_fail (scanner != NULL);
760 /* for file input, rewind the filedescriptor to the current
761 * buffer position and blow the file read ahead buffer. usefull for
762 * third party uses of our filedescriptor, which hooks onto the current
766 if (scanner->input_fd >= 0 && scanner->text_end > scanner->text)
770 buffered = scanner->text_end - scanner->text;
771 if (lseek (scanner->input_fd, - buffered, SEEK_CUR) >= 0)
773 /* we succeeded, blow our buffer's contents now */
774 scanner->text = NULL;
775 scanner->text_end = NULL;
783 g_scanner_get_char (GScanner *scanner,
787 register guchar fchar;
789 if (scanner->text < scanner->text_end)
790 fchar = *(scanner->text++);
791 else if (scanner->input_fd >= 0)
794 register gchar *buffer;
796 buffer = scanner->buffer;
799 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
801 while (count == -1 && (errno == EINTR || errno == EAGAIN));
805 scanner->input_fd = -1;
810 scanner->text = buffer + 1;
811 scanner->text_end = buffer + count;
815 g_scanner_sync_file_offset (scanner);
816 scanner->text_end = scanner->text;
817 scanner->input_fd = -1;
838 g_scanner_unexp_token (GScanner *scanner,
839 GTokenType expected_token,
840 const gchar *identifier_spec,
841 const gchar *symbol_spec,
842 const gchar *symbol_name,
843 const gchar *message,
846 register gchar *token_string;
847 register guint token_string_len;
848 register gchar *expected_string;
849 register guint expected_string_len;
850 register gchar *message_prefix;
851 register gboolean print_unexp;
852 void (*msg_handler) (GScanner*, const gchar*, ...);
854 g_return_if_fail (scanner != NULL);
857 msg_handler = g_scanner_error;
859 msg_handler = g_scanner_warn;
861 if (!identifier_spec)
862 identifier_spec = "identifier";
864 symbol_spec = "symbol";
866 token_string_len = 56;
867 token_string = g_new (gchar, token_string_len + 1);
868 expected_string_len = 64;
869 expected_string = g_new (gchar, expected_string_len + 1);
872 switch (scanner->token)
875 g_snprintf (token_string, token_string_len, "end of file");
879 if (scanner->token >= 1 && scanner->token <= 255)
881 if ((scanner->token >= ' ' && scanner->token <= '~') ||
882 strchr (scanner->config->cset_identifier_first, scanner->token) ||
883 strchr (scanner->config->cset_identifier_nth, scanner->token))
884 g_snprintf (token_string, expected_string_len, "character `%c'", scanner->token);
886 g_snprintf (token_string, expected_string_len, "character `\\%o'", scanner->token);
889 else if (!scanner->config->symbol_2_token)
891 g_snprintf (token_string, token_string_len, "(unknown) token <%d>", scanner->token);
896 if (expected_token == G_TOKEN_SYMBOL ||
897 (scanner->config->symbol_2_token &&
898 expected_token > G_TOKEN_LAST))
901 g_snprintf (token_string,
904 print_unexp ? "" : "invalid ",
908 g_snprintf (token_string,
911 print_unexp ? "" : "invalid ",
917 expected_token = G_TOKEN_NONE;
918 switch (scanner->value.v_error)
920 case G_ERR_UNEXP_EOF:
921 g_snprintf (token_string, token_string_len, "scanner: unexpected end of file");
924 case G_ERR_UNEXP_EOF_IN_STRING:
925 g_snprintf (token_string, token_string_len, "scanner: unterminated string constant");
928 case G_ERR_UNEXP_EOF_IN_COMMENT:
929 g_snprintf (token_string, token_string_len, "scanner: unterminated comment");
932 case G_ERR_NON_DIGIT_IN_CONST:
933 g_snprintf (token_string, token_string_len, "scanner: non digit in constant");
936 case G_ERR_FLOAT_RADIX:
937 g_snprintf (token_string, token_string_len, "scanner: invalid radix for floating constant");
940 case G_ERR_FLOAT_MALFORMED:
941 g_snprintf (token_string, token_string_len, "scanner: malformed floating constant");
944 case G_ERR_DIGIT_RADIX:
945 g_snprintf (token_string, token_string_len, "scanner: digit is beyond radix");
950 g_snprintf (token_string, token_string_len, "scanner: unknown error");
956 g_snprintf (token_string, token_string_len, "character `%c'", scanner->value.v_char);
959 case G_TOKEN_IDENTIFIER:
960 if (expected_token == G_TOKEN_IDENTIFIER)
962 g_snprintf (token_string,
965 print_unexp ? "" : "invalid ",
967 scanner->value.v_string);
974 g_snprintf (token_string, token_string_len, "number `%ld'", scanner->value.v_int);
978 g_snprintf (token_string, token_string_len, "number `%.3f'", scanner->value.v_float);
982 if (expected_token == G_TOKEN_STRING)
984 g_snprintf (token_string,
986 "%s%sstring constant \"%s\"",
987 print_unexp ? "" : "invalid ",
988 scanner->value.v_string[0] == 0 ? "empty " : "",
989 scanner->value.v_string);
990 token_string[token_string_len - 2] = '"';
991 token_string[token_string_len - 1] = 0;
994 case G_TOKEN_COMMENT_SINGLE:
995 case G_TOKEN_COMMENT_MULTI:
996 g_snprintf (token_string, token_string_len, "comment");
1000 /* somehow the user's parsing code is screwed, there isn't much
1001 * we can do about it.
1002 * Note, a common case to trigger this is
1003 * g_scanner_peek_next_token(); g_scanner_unexp_token();
1004 * without an intermediate g_scanner_get_next_token().
1006 g_assert_not_reached ();
1011 switch (expected_token)
1013 gboolean need_valid;
1016 if (expected_token >= 1 && expected_token <= 255)
1018 if ((expected_token >= ' ' && expected_token <= '~') ||
1019 strchr (scanner->config->cset_identifier_first, expected_token) ||
1020 strchr (scanner->config->cset_identifier_nth, expected_token))
1021 g_snprintf (expected_string, expected_string_len, "character `%c'", expected_token);
1023 g_snprintf (expected_string, expected_string_len, "character `\\%o'", expected_token);
1026 else if (!scanner->config->symbol_2_token)
1028 g_snprintf (expected_string, expected_string_len, "(unknown) token <%d>", expected_token);
1032 case G_TOKEN_SYMBOL:
1033 need_valid = (scanner->token == G_TOKEN_SYMBOL ||
1034 (scanner->config->symbol_2_token &&
1035 scanner->token > G_TOKEN_LAST));
1036 g_snprintf (expected_string,
1037 expected_string_len,
1039 need_valid ? "valid " : "",
1041 /* FIXME: should we attempt to lookup the symbol_name for symbol_2_token? */
1045 g_snprintf (expected_string, expected_string_len, "number (integer)");
1049 g_snprintf (expected_string, expected_string_len, "number (float)");
1052 case G_TOKEN_STRING:
1053 g_snprintf (expected_string,
1054 expected_string_len,
1055 "%sstring constant",
1056 scanner->token == G_TOKEN_STRING ? "valid " : "");
1059 case G_TOKEN_IDENTIFIER:
1060 g_snprintf (expected_string,
1061 expected_string_len,
1063 scanner->token == G_TOKEN_IDENTIFIER ? "valid " : "",
1071 if (message && message[0] != 0)
1072 message_prefix = " - ";
1075 message_prefix = "";
1079 if (expected_token != G_TOKEN_NONE)
1082 msg_handler (scanner,
1083 "unexpected %s, expected %s%s%s",
1089 msg_handler (scanner,
1090 "%s, expected %s%s%s",
1099 msg_handler (scanner,
1100 "unexpected %s%s%s",
1105 msg_handler (scanner,
1112 g_free (token_string);
1113 g_free (expected_string);
1117 g_scanner_stat_mode (const gchar *filename)
1119 struct stat *stat_buf;
1122 stat_buf = g_new0 (struct stat, 1);
1124 lstat (filename, stat_buf);
1126 stat (filename, stat_buf);
1128 st_mode = stat_buf->st_mode;
1136 g_scanner_get_token_i (GScanner *scanner,
1137 GTokenType *token_p,
1138 GTokenValue *value_p,
1144 g_scanner_free_value (token_p, value_p);
1145 g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
1147 while (((*token_p > 0 && *token_p < 256) &&
1148 strchr (scanner->config->cset_skip_characters, *token_p)) ||
1149 (*token_p == G_TOKEN_CHAR &&
1150 strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
1151 (*token_p == G_TOKEN_COMMENT_MULTI &&
1152 scanner->config->skip_comment_multi) ||
1153 (*token_p == G_TOKEN_COMMENT_SINGLE &&
1154 scanner->config->skip_comment_single));
1158 case G_TOKEN_IDENTIFIER:
1159 if (scanner->config->identifier_2_string)
1160 *token_p = G_TOKEN_STRING;
1163 case G_TOKEN_SYMBOL:
1164 if (scanner->config->symbol_2_token)
1165 *token_p = (GTokenType) value_p->v_symbol;
1168 case G_TOKEN_BINARY:
1171 if (scanner->config->numbers_2_int)
1172 *token_p = G_TOKEN_INT;
1179 if (*token_p == G_TOKEN_INT &&
1180 scanner->config->int_2_float)
1182 *token_p = G_TOKEN_FLOAT;
1183 value_p->v_float = value_p->v_int;
1190 g_scanner_get_token_ll (GScanner *scanner,
1191 GTokenType *token_p,
1192 GTokenValue *value_p,
1196 register GScannerConfig *config;
1197 register GTokenType token;
1198 register gboolean in_comment_multi;
1199 register gboolean in_comment_single;
1200 register gboolean in_string_sq;
1201 register gboolean in_string_dq;
1202 register GString *gstring;
1206 config = scanner->config;
1207 (*value_p).v_int = 0;
1209 if ((scanner->text >= scanner->text_end && scanner->input_fd < 0) ||
1210 scanner->token == G_TOKEN_EOF)
1212 *token_p = G_TOKEN_EOF;
1216 in_comment_multi = FALSE;
1217 in_comment_single = FALSE;
1218 in_string_sq = FALSE;
1219 in_string_dq = FALSE;
1222 do /* while (ch != 0) */
1224 register gboolean dotted_float = FALSE;
1226 ch = g_scanner_get_char (scanner, line_p, position_p);
1229 token = G_TOKEN_NONE;
1231 /* this is *evil*, but needed ;(
1232 * we first check for identifier first character, because it
1233 * might interfere with other key chars like slashes or numbers
1235 if (config->scan_identifier &&
1236 ch && strchr (config->cset_identifier_first, ch))
1237 goto identifier_precedence;
1242 token = G_TOKEN_EOF;
1248 if (!config->scan_comment_multi ||
1249 g_scanner_peek_next_char (scanner) != '*')
1251 g_scanner_get_char (scanner, line_p, position_p);
1252 token = G_TOKEN_COMMENT_MULTI;
1253 in_comment_multi = TRUE;
1254 gstring = g_string_new ("");
1255 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1257 if (ch == '*' && g_scanner_peek_next_char (scanner) == '/')
1259 g_scanner_get_char (scanner, line_p, position_p);
1260 in_comment_multi = FALSE;
1264 gstring = g_string_append_c (gstring, ch);
1270 if (!config->scan_string_sq)
1272 token = G_TOKEN_STRING;
1273 in_string_sq = TRUE;
1274 gstring = g_string_new ("");
1275 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1279 in_string_sq = FALSE;
1283 gstring = g_string_append_c (gstring, ch);
1289 if (!config->scan_string_dq)
1291 token = G_TOKEN_STRING;
1292 in_string_dq = TRUE;
1293 gstring = g_string_new ("");
1294 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1298 in_string_dq = FALSE;
1305 ch = g_scanner_get_char (scanner, line_p, position_p);
1309 register guint fchar;
1315 gstring = g_string_append_c (gstring, '\\');
1319 gstring = g_string_append_c (gstring, '\n');
1323 gstring = g_string_append_c (gstring, '\t');
1327 gstring = g_string_append_c (gstring, '\r');
1331 gstring = g_string_append_c (gstring, '\b');
1335 gstring = g_string_append_c (gstring, '\f');
1347 fchar = g_scanner_peek_next_char (scanner);
1348 if (fchar >= '0' && fchar <= '7')
1350 ch = g_scanner_get_char (scanner, line_p, position_p);
1351 i = i * 8 + ch - '0';
1352 fchar = g_scanner_peek_next_char (scanner);
1353 if (fchar >= '0' && fchar <= '7')
1355 ch = g_scanner_get_char (scanner, line_p, position_p);
1356 i = i * 8 + ch - '0';
1359 gstring = g_string_append_c (gstring, i);
1363 gstring = g_string_append_c (gstring, ch);
1368 gstring = g_string_append_c (gstring, ch);
1375 if (!config->scan_float)
1377 token = G_TOKEN_FLOAT;
1378 dotted_float = TRUE;
1379 ch = g_scanner_get_char (scanner, line_p, position_p);
1380 goto number_parsing;
1383 if (!config->scan_hex_dollar)
1385 token = G_TOKEN_HEX;
1386 ch = g_scanner_get_char (scanner, line_p, position_p);
1387 goto number_parsing;
1390 if (config->scan_octal)
1391 token = G_TOKEN_OCTAL;
1393 token = G_TOKEN_INT;
1394 ch = g_scanner_peek_next_char (scanner);
1395 if (config->scan_hex && (ch == 'x' || ch == 'X'))
1397 token = G_TOKEN_HEX;
1398 g_scanner_get_char (scanner, line_p, position_p);
1399 ch = g_scanner_get_char (scanner, line_p, position_p);
1402 token = G_TOKEN_ERROR;
1403 value.v_error = G_ERR_UNEXP_EOF;
1407 if (g_scanner_char_2_num (ch, 16) < 0)
1409 token = G_TOKEN_ERROR;
1410 value.v_error = G_ERR_DIGIT_RADIX;
1415 else if (config->scan_binary && (ch == 'b' || ch == 'B'))
1417 token = G_TOKEN_BINARY;
1418 g_scanner_get_char (scanner, line_p, position_p);
1419 ch = g_scanner_get_char (scanner, line_p, position_p);
1422 token = G_TOKEN_ERROR;
1423 value.v_error = G_ERR_UNEXP_EOF;
1427 if (g_scanner_char_2_num (ch, 10) < 0)
1429 token = G_TOKEN_ERROR;
1430 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1449 register gboolean in_number = TRUE;
1452 if (token == G_TOKEN_NONE)
1453 token = G_TOKEN_INT;
1455 gstring = g_string_new (dotted_float ? "0." : "");
1456 gstring = g_string_append_c (gstring, ch);
1458 do /* while (in_number) */
1460 register gboolean is_E;
1462 is_E = token == G_TOKEN_FLOAT && (ch == 'e' || ch == 'E');
1464 ch = g_scanner_peek_next_char (scanner);
1466 if (g_scanner_char_2_num (ch, 36) >= 0 ||
1467 (config->scan_float && ch == '.') ||
1468 (is_E && (ch == '+' || ch == '-')))
1470 ch = g_scanner_get_char (scanner, line_p, position_p);
1475 if (token != G_TOKEN_INT && token != G_TOKEN_OCTAL)
1477 value.v_error = token == G_TOKEN_FLOAT ? G_ERR_FLOAT_MALFORMED : G_ERR_FLOAT_RADIX;
1478 token = G_TOKEN_ERROR;
1483 token = G_TOKEN_FLOAT;
1484 gstring = g_string_append_c (gstring, ch);
1498 gstring = g_string_append_c (gstring, ch);
1503 if (token != G_TOKEN_FLOAT)
1505 token = G_TOKEN_ERROR;
1506 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1510 gstring = g_string_append_c (gstring, ch);
1515 if ((token != G_TOKEN_HEX && !config->scan_float) ||
1516 (token != G_TOKEN_HEX &&
1517 token != G_TOKEN_OCTAL &&
1518 token != G_TOKEN_FLOAT &&
1519 token != G_TOKEN_INT))
1521 token = G_TOKEN_ERROR;
1522 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1527 if (token != G_TOKEN_HEX)
1528 token = G_TOKEN_FLOAT;
1529 gstring = g_string_append_c (gstring, ch);
1534 if (token != G_TOKEN_HEX)
1536 token = G_TOKEN_ERROR;
1537 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1541 gstring = g_string_append_c (gstring, ch);
1553 case G_TOKEN_BINARY:
1554 value.v_binary = strtol (gstring->str, &endptr, 2);
1558 value.v_octal = strtol (gstring->str, &endptr, 8);
1562 value.v_int = strtol (gstring->str, &endptr, 10);
1566 value.v_float = g_strtod (gstring->str, &endptr);
1570 value.v_hex = strtol (gstring->str, &endptr, 16);
1576 if (endptr && *endptr)
1578 token = G_TOKEN_ERROR;
1579 if (*endptr == 'e' || *endptr == 'E')
1580 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1582 value.v_error = G_ERR_DIGIT_RADIX;
1584 g_string_free (gstring, TRUE);
1587 } /* number_parsing:... */
1593 if (config->cpair_comment_single &&
1594 ch == config->cpair_comment_single[0])
1596 token = G_TOKEN_COMMENT_SINGLE;
1597 in_comment_single = TRUE;
1598 gstring = g_string_new ("");
1599 while ((ch = g_scanner_get_char (scanner,
1603 if (ch == config->cpair_comment_single[1])
1605 in_comment_single = FALSE;
1610 gstring = g_string_append_c (gstring, ch);
1614 else if (config->scan_identifier && ch &&
1615 strchr (config->cset_identifier_first, ch))
1617 identifier_precedence:
1619 if (config->cset_identifier_nth && ch &&
1620 strchr (config->cset_identifier_nth,
1621 g_scanner_peek_next_char (scanner)))
1623 token = G_TOKEN_IDENTIFIER;
1624 gstring = g_string_new ("");
1625 gstring = g_string_append_c (gstring, ch);
1628 ch = g_scanner_get_char (scanner, line_p, position_p);
1629 gstring = g_string_append_c (gstring, ch);
1630 ch = g_scanner_peek_next_char (scanner);
1632 while (ch && strchr (config->cset_identifier_nth, ch));
1635 else if (config->scan_identifier_1char)
1637 token = G_TOKEN_IDENTIFIER;
1638 value.v_identifier = g_new0 (gchar, 2);
1639 value.v_identifier[0] = ch;
1645 if (config->char_2_token)
1649 token = G_TOKEN_CHAR;
1654 } /* default_case:... */
1657 g_assert (ch == 0 && token != G_TOKEN_NONE); /* paranoid */
1661 if (in_comment_multi || in_comment_single ||
1662 in_string_sq || in_string_dq)
1664 token = G_TOKEN_ERROR;
1667 g_string_free (gstring, TRUE);
1671 if (in_comment_multi || in_comment_single)
1672 value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
1673 else /* (in_string_sq || in_string_dq) */
1674 value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
1679 value.v_string = gstring->str;
1680 g_string_free (gstring, FALSE);
1684 if (token == G_TOKEN_IDENTIFIER)
1686 if (config->scan_symbols)
1688 register GScannerKey *key;
1689 register guint scope_id;
1691 scope_id = scanner->scope_id;
1692 key = g_scanner_lookup_internal (scanner, scope_id, value.v_identifier);
1693 if (!key && scope_id && scanner->config->scope_0_fallback)
1694 key = g_scanner_lookup_internal (scanner, 0, value.v_identifier);
1698 g_free (value.v_identifier);
1699 token = G_TOKEN_SYMBOL;
1700 value.v_symbol = key->value;
1704 if (token == G_TOKEN_IDENTIFIER &&
1705 config->scan_identifier_NULL &&
1706 strlen (value.v_identifier) == 4)
1708 gchar *null_upper = "NULL";
1709 gchar *null_lower = "null";
1711 if (scanner->config->case_sensitive)
1713 if (value.v_identifier[0] == null_upper[0] &&
1714 value.v_identifier[1] == null_upper[1] &&
1715 value.v_identifier[2] == null_upper[2] &&
1716 value.v_identifier[3] == null_upper[3])
1717 token = G_TOKEN_IDENTIFIER_NULL;
1721 if ((value.v_identifier[0] == null_upper[0] ||
1722 value.v_identifier[0] == null_lower[0]) &&
1723 (value.v_identifier[1] == null_upper[1] ||
1724 value.v_identifier[1] == null_lower[1]) &&
1725 (value.v_identifier[2] == null_upper[2] ||
1726 value.v_identifier[2] == null_lower[2]) &&
1727 (value.v_identifier[3] == null_upper[3] ||
1728 value.v_identifier[3] == null_lower[3]))
1729 token = G_TOKEN_IDENTIFIER_NULL;