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.
22 #define __gscanner_c__
30 #include <sys/types.h> /* needed for sys/stat.h */
37 #define to_lower(c) ( \
39 ( (((guchar)(c))>='A' && ((guchar)(c))<='Z') * ('a'-'A') ) | \
40 ( (((guchar)(c))>=192 && ((guchar)(c))<=214) * (224-192) ) | \
41 ( (((guchar)(c))>=216 && ((guchar)(c))<=222) * (248-216) ) | \
47 /* --- typedefs --- */
48 typedef struct _GScannerKey GScannerKey;
59 /* --- variables --- */
60 static GScannerConfig g_scanner_config_template =
64 ) /* cset_skip_characters */,
69 ) /* cset_identifier_first */,
76 ) /* cset_identifier_nth */,
77 ( "#\n" ) /* cpair_comment_single */,
79 FALSE /* case_sensitive */,
81 TRUE /* skip_comment_multi */,
82 TRUE /* skip_comment_single */,
83 TRUE /* scan_comment_multi */,
84 TRUE /* scan_identifier */,
85 FALSE /* scan_identifier_1char */,
86 FALSE /* scan_identifier_NULL */,
87 TRUE /* scan_symbols */,
88 FALSE /* scan_binary */,
89 TRUE /* scan_octal */,
90 TRUE /* scan_float */,
92 FALSE /* scan_hex_dollar */,
93 TRUE /* scan_string_sq */,
94 TRUE /* scan_string_dq */,
95 TRUE /* numbers_2_int */,
96 FALSE /* int_2_float */,
97 FALSE /* identifier_2_string */,
98 TRUE /* char_2_token */,
99 FALSE /* symbol_2_token */,
100 FALSE /* scope_0_fallback */,
104 /* --- prototypes --- */
105 extern char* g_vsprintf (gchar *fmt, va_list *args, va_list *args2);
107 gint g_scanner_char_2_num (guchar c,
110 GScannerKey* g_scanner_lookup_internal (GScanner *scanner,
112 const gchar *symbol);
113 static gint g_scanner_key_equal (gconstpointer v1,
115 static guint g_scanner_key_hash (gconstpointer v);
116 static void g_scanner_get_token_ll (GScanner *scanner,
121 static void g_scanner_get_token_i (GScanner *scanner,
126 static void g_scanner_free_value (GTokenType *token_p,
129 static guchar g_scanner_peek_next_char (GScanner *scanner);
130 static guchar g_scanner_get_char (GScanner *scanner,
133 static void g_scanner_msg_handler (GScanner *scanner,
138 /* --- functions --- */
140 g_scanner_char_2_num (guchar c,
143 if (c >= '0' && c <= '9')
145 else if (c >= 'A' && c <= 'Z')
147 else if (c >= 'a' && c <= 'z')
159 g_scanner_new (GScannerConfig *config_templ)
161 register GScanner *scanner;
164 config_templ = &g_scanner_config_template;
166 scanner = g_new0 (GScanner, 1);
168 scanner->user_data = NULL;
169 scanner->max_parse_errors = 0;
170 scanner->parse_errors = 0;
171 scanner->input_name = NULL;
172 scanner->derived_data = NULL;
174 scanner->config = g_new0 (GScannerConfig, 1);
176 scanner->config->case_sensitive = config_templ->case_sensitive;
177 scanner->config->cset_skip_characters = config_templ->cset_skip_characters;
178 scanner->config->cset_identifier_first= config_templ->cset_identifier_first;
179 scanner->config->cset_identifier_nth = config_templ->cset_identifier_nth;
180 scanner->config->cpair_comment_single = config_templ->cpair_comment_single;
181 scanner->config->skip_comment_multi = config_templ->skip_comment_multi;
182 scanner->config->skip_comment_single = config_templ->skip_comment_single;
183 scanner->config->scan_comment_multi = config_templ->scan_comment_multi;
184 scanner->config->scan_identifier = config_templ->scan_identifier;
185 scanner->config->scan_identifier_1char= config_templ->scan_identifier_1char;
186 scanner->config->scan_identifier_NULL = config_templ->scan_identifier_NULL;
187 scanner->config->scan_symbols = config_templ->scan_symbols;
188 scanner->config->scan_binary = config_templ->scan_binary;
189 scanner->config->scan_octal = config_templ->scan_octal;
190 scanner->config->scan_float = config_templ->scan_float;
191 scanner->config->scan_hex = config_templ->scan_hex;
192 scanner->config->scan_hex_dollar = config_templ->scan_hex_dollar;
193 scanner->config->scan_string_sq = config_templ->scan_string_sq;
194 scanner->config->scan_string_dq = config_templ->scan_string_dq;
195 scanner->config->numbers_2_int = config_templ->numbers_2_int;
196 scanner->config->int_2_float = config_templ->int_2_float;
197 scanner->config->identifier_2_string = config_templ->identifier_2_string;
198 scanner->config->char_2_token = config_templ->char_2_token;
199 scanner->config->symbol_2_token = config_templ->symbol_2_token;
200 scanner->config->scope_0_fallback = config_templ->scope_0_fallback;
202 scanner->token = G_TOKEN_NONE;
203 scanner->value.v_int = 0;
205 scanner->position = 0;
207 scanner->next_token = G_TOKEN_NONE;
208 scanner->next_value.v_int = 0;
209 scanner->next_line = 1;
210 scanner->next_position = 0;
212 scanner->symbol_table = g_hash_table_new (g_scanner_key_hash, g_scanner_key_equal);
213 scanner->text = NULL;
214 scanner->text_len = 0;
215 scanner->input_fd = -1;
216 scanner->peeked_char = -1;
217 scanner->scope_id = 0;
219 scanner->msg_handler = g_scanner_msg_handler;
225 g_scanner_destroy_symbol_table_entry (gpointer _key,
229 GScannerKey *key = _key;
231 g_free (key->symbol);
236 g_scanner_destroy (GScanner *scanner)
238 g_return_if_fail (scanner != NULL);
240 g_hash_table_foreach (scanner->symbol_table,
241 g_scanner_destroy_symbol_table_entry, NULL);
242 g_hash_table_destroy (scanner->symbol_table);
243 g_scanner_free_value (&scanner->token, &scanner->value);
244 g_scanner_free_value (&scanner->next_token, &scanner->next_value);
245 g_free (scanner->config);
250 g_scanner_msg_handler (GScanner *scanner,
254 g_return_if_fail (scanner != NULL);
256 fprintf (stdout, "%s:%d: ", scanner->input_name, scanner->line);
258 fprintf (stdout, "error: ");
259 fprintf (stdout, "%s\n", message);
263 g_scanner_error (GScanner *scanner,
267 g_return_if_fail (scanner != NULL);
268 g_return_if_fail (format != NULL);
270 scanner->parse_errors++;
272 if (scanner->msg_handler)
277 va_start (args, format);
278 va_start (args2, format);
279 string = g_vsprintf ((gchar*) format, &args, &args2);
283 string = g_strdup (string);
285 scanner->msg_handler (scanner, string, TRUE);
292 g_scanner_warn (GScanner *scanner,
296 g_return_if_fail (scanner != NULL);
297 g_return_if_fail (format != NULL);
299 if (scanner->msg_handler)
304 va_start (args, format);
305 va_start (args2, format);
306 string = g_vsprintf ((gchar*) format, &args, &args2);
310 string = g_strdup (string);
312 scanner->msg_handler (scanner, string, FALSE);
319 g_scanner_input_file (GScanner *scanner,
322 g_return_if_fail (input_fd >= 0);
324 scanner->token = G_TOKEN_NONE;
325 scanner->value.v_int = 0;
327 scanner->position = 0;
328 scanner->next_token = G_TOKEN_NONE;
330 scanner->text = NULL;
331 scanner->text_len = 0;
332 scanner->input_fd = input_fd;
333 scanner->peeked_char = -1;
337 g_scanner_input_text (GScanner *scanner,
341 g_return_if_fail (text != NULL);
343 scanner->token = G_TOKEN_NONE;
344 scanner->value.v_int = 0;
346 scanner->position = 0;
347 scanner->next_token = G_TOKEN_NONE;
349 scanner->text = text;
350 scanner->text_len = text_len;
351 scanner->input_fd = -1;
352 scanner->peeked_char = -1;
356 g_scanner_key_equal (gconstpointer v1,
359 register const GScannerKey *key1 = v1;
360 register const GScannerKey *key2 = v2;
362 return (key1->scope_id == key2->scope_id) && (strcmp (key1->symbol, key2->symbol) == 0);
366 g_scanner_key_hash (gconstpointer v)
368 register const GScannerKey *key = v;
373 for (c = key->symbol; *c; c++)
389 static inline GScannerKey*
390 g_scanner_lookup_internal (GScanner *scanner,
394 register GScannerKey *key_p;
397 key.scope_id = scope_id;
399 if (!scanner->config->case_sensitive)
402 register const gchar *c;
404 key.symbol = g_new (gchar, strlen (symbol) + 1);
405 for (d = key.symbol, c = symbol; *c; c++, d++)
408 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
413 key.symbol = (gchar*) symbol;
414 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
421 g_scanner_scope_add_symbol (GScanner *scanner,
426 register GScannerKey *key;
428 g_return_if_fail (scanner != NULL);
429 g_return_if_fail (symbol != NULL);
431 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
435 key = g_new (GScannerKey, 1);
436 key->scope_id = scope_id;
437 key->symbol = g_strdup (symbol);
439 if (!scanner->config->case_sensitive)
450 g_hash_table_insert (scanner->symbol_table, key, key);
457 g_scanner_scope_remove_symbol (GScanner *scanner,
461 register GScannerKey *key;
463 g_return_if_fail (scanner != NULL);
464 g_return_if_fail (symbol != NULL);
466 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
470 g_hash_table_remove (scanner->symbol_table, key);
471 g_free (key->symbol);
477 g_scanner_lookup_symbol (GScanner *scanner,
480 register GScannerKey *key;
481 register guint scope_id;
483 g_return_val_if_fail (scanner != NULL, NULL);
488 scope_id = scanner->scope_id;
489 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
490 if (!key && scope_id && scanner->config->scope_0_fallback)
491 key = g_scanner_lookup_internal (scanner, 0, symbol);
500 g_scanner_scope_lookup_symbol (GScanner *scanner,
504 register GScannerKey *key;
506 g_return_val_if_fail (scanner != NULL, NULL);
511 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
520 g_scanner_set_scope (GScanner *scanner,
523 register guint old_scope_id;
525 g_return_val_if_fail (scanner != NULL, 0);
527 old_scope_id = scanner->scope_id;
528 scanner->scope_id = scope_id;
534 g_scanner_foreach_internal (gpointer _key,
538 register GScannerKey *key;
539 register gpointer *d;
540 register GHFunc func;
541 register gpointer func_data;
542 register guint *scope_id;
545 func = (GHFunc) d[0];
550 if (key->scope_id == *scope_id)
551 func (key->symbol, key->value, func_data);
555 g_scanner_scope_foreach_symbol (GScanner *scanner,
562 g_return_if_fail (scanner != NULL);
564 d[0] = (gpointer) func;
568 g_hash_table_foreach (scanner->symbol_table, g_scanner_foreach_internal, d);
572 g_scanner_freeze_symbol_table (GScanner *scanner)
574 g_return_if_fail (scanner != NULL);
576 g_hash_table_freeze (scanner->symbol_table);
580 g_scanner_thaw_symbol_table (GScanner *scanner)
582 g_return_if_fail (scanner != NULL);
584 g_hash_table_thaw (scanner->symbol_table);
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)
645 g_return_val_if_fail (scanner != NULL, v);
647 return scanner->value;
651 g_scanner_cur_line (GScanner *scanner)
653 g_return_val_if_fail (scanner != NULL, 0);
655 return scanner->line;
659 g_scanner_cur_position (GScanner *scanner)
661 g_return_val_if_fail (scanner != NULL, 0);
663 return scanner->position;
667 g_scanner_eof (GScanner *scanner)
669 g_return_val_if_fail (scanner != NULL, TRUE);
671 return scanner->token == G_TOKEN_EOF;
675 g_scanner_peek_next_char (GScanner *scanner)
679 if (scanner->text_len)
681 fchar = scanner->text[0];
683 else if (scanner->input_fd >= 0)
685 if (scanner->peeked_char < 0)
691 count = read (scanner->input_fd, &fchar, 1);
693 while (count == -1 &&
700 scanner->peeked_char = fchar;
703 fchar = scanner->peeked_char;
712 g_scanner_get_char (GScanner *scanner,
718 if (scanner->text_len)
720 fchar = *(scanner->text++);
723 else if (scanner->input_fd >= 0)
725 if (scanner->peeked_char < 0)
731 count = read (scanner->input_fd, &fchar, 1);
733 while (count == -1 &&
736 if (count != 1 || fchar == 0)
739 scanner->peeked_char = 0;
744 fchar = scanner->peeked_char;
746 scanner->peeked_char = -1;
766 g_scanner_unexp_token (GScanner *scanner,
767 GTokenType expected_token,
768 const gchar *identifier_spec,
769 const gchar *symbol_spec,
770 const gchar *symbol_name,
771 const gchar *message,
774 register gchar *token_string;
775 register guint token_string_len;
776 register gchar *expected_string;
777 register guint expected_string_len;
778 register gchar *message_prefix;
779 register gboolean print_unexp;
780 void (*msg_handler) (GScanner*, const gchar*, ...);
782 g_return_if_fail (scanner != NULL);
785 msg_handler = g_scanner_error;
787 msg_handler = g_scanner_warn;
789 if (!identifier_spec)
790 identifier_spec = "identifier";
792 symbol_spec = "symbol";
794 token_string_len = 56;
795 token_string = g_new (gchar, token_string_len + 1);
796 expected_string_len = 64;
797 expected_string = g_new (gchar, expected_string_len + 1);
800 switch (scanner->token)
803 g_snprintf (token_string, token_string_len, "end of file");
807 if (scanner->token >= 1 && scanner->token <= 255)
809 if ((scanner->token >= ' ' && scanner->token <= '~') ||
810 strchr (scanner->config->cset_identifier_first, scanner->token) ||
811 strchr (scanner->config->cset_identifier_nth, scanner->token))
812 g_snprintf (token_string, expected_string_len, "character `%c'", scanner->token);
814 g_snprintf (token_string, expected_string_len, "character `\\%o'", scanner->token);
817 else if (!scanner->config->symbol_2_token)
819 g_snprintf (token_string, token_string_len, "(unknown) token <%d>", scanner->token);
824 if (expected_token == G_TOKEN_SYMBOL ||
825 (scanner->config->symbol_2_token &&
826 expected_token > G_TOKEN_LAST))
829 g_snprintf (token_string,
832 print_unexp ? "" : "invalid ",
836 g_snprintf (token_string,
839 print_unexp ? "" : "invalid ",
845 expected_token = G_TOKEN_NONE;
846 switch (scanner->value.v_error)
848 case G_ERR_UNEXP_EOF:
849 g_snprintf (token_string, token_string_len, "scanner: unexpected end of file");
852 case G_ERR_UNEXP_EOF_IN_STRING:
853 g_snprintf (token_string, token_string_len, "scanner: unterminated string constant");
856 case G_ERR_UNEXP_EOF_IN_COMMENT:
857 g_snprintf (token_string, token_string_len, "scanner: unterminated comment");
860 case G_ERR_NON_DIGIT_IN_CONST:
861 g_snprintf (token_string, token_string_len, "scanner: non digit in constant");
864 case G_ERR_FLOAT_RADIX:
865 g_snprintf (token_string, token_string_len, "scanner: invalid radix for floating constant");
868 case G_ERR_FLOAT_MALFORMED:
869 g_snprintf (token_string, token_string_len, "scanner: malformed floating constant");
872 case G_ERR_DIGIT_RADIX:
873 g_snprintf (token_string, token_string_len, "scanner: digit is beyond radix");
878 g_snprintf (token_string, token_string_len, "scanner: unknown error");
884 g_snprintf (token_string, token_string_len, "character `%c'", scanner->value.v_char);
887 case G_TOKEN_IDENTIFIER:
888 if (expected_token == G_TOKEN_IDENTIFIER)
890 g_snprintf (token_string,
893 print_unexp ? "" : "invalid ",
895 scanner->value.v_string);
902 g_snprintf (token_string, token_string_len, "number `%ld'", scanner->value.v_int);
906 g_snprintf (token_string, token_string_len, "number `%.3f'", scanner->value.v_float);
910 if (expected_token == G_TOKEN_STRING)
912 g_snprintf (token_string,
914 "%s%sstring constant \"%s\"",
915 print_unexp ? "" : "invalid ",
916 scanner->value.v_string[0] == 0 ? "empty " : "",
917 scanner->value.v_string);
918 token_string[token_string_len - 2] = '"';
919 token_string[token_string_len - 1] = 0;
922 case G_TOKEN_COMMENT_SINGLE:
923 case G_TOKEN_COMMENT_MULTI:
924 g_snprintf (token_string, token_string_len, "comment");
928 /* somehow the user's parsing code is screwed, there isn't much
929 * we can do about it.
930 * Note, a common case to trigger this is
931 * g_scanner_peek_next_token(); g_scanner_unexp_token();
932 * without an intermediate g_scanner_get_next_token().
934 g_assert_not_reached ();
939 switch (expected_token)
944 if (expected_token >= 1 && expected_token <= 255)
946 if ((expected_token >= ' ' && expected_token <= '~') ||
947 strchr (scanner->config->cset_identifier_first, expected_token) ||
948 strchr (scanner->config->cset_identifier_nth, expected_token))
949 g_snprintf (expected_string, expected_string_len, "character `%c'", expected_token);
951 g_snprintf (expected_string, expected_string_len, "character `\\%o'", expected_token);
954 else if (!scanner->config->symbol_2_token)
956 g_snprintf (expected_string, expected_string_len, "(unknown) token <%d>", expected_token);
961 need_valid = (scanner->token == G_TOKEN_SYMBOL ||
962 (scanner->config->symbol_2_token &&
963 scanner->token > G_TOKEN_LAST));
964 g_snprintf (expected_string,
967 need_valid ? "valid " : "",
969 /* FIXME: should we attempt to lookup the symbol_name for symbol_2_token? */
973 g_snprintf (expected_string, expected_string_len, "number (integer)");
977 g_snprintf (expected_string, expected_string_len, "number (float)");
981 g_snprintf (expected_string,
984 scanner->token == G_TOKEN_STRING ? "valid " : "");
987 case G_TOKEN_IDENTIFIER:
988 g_snprintf (expected_string,
991 scanner->token == G_TOKEN_IDENTIFIER ? "valid " : "",
999 if (message && message[0] != 0)
1000 message_prefix = " - ";
1003 message_prefix = "";
1007 if (expected_token != G_TOKEN_NONE)
1010 msg_handler (scanner,
1011 "unexpected %s, expected %s%s%s",
1017 msg_handler (scanner,
1018 "%s, expected %s%s%s",
1027 msg_handler (scanner,
1028 "unexpected %s%s%s",
1033 msg_handler (scanner,
1040 g_free (token_string);
1041 g_free (expected_string);
1045 g_scanner_stat_mode (const gchar *filename)
1047 struct stat *stat_buf;
1050 stat_buf = g_new0 (struct stat, 1);
1052 lstat (filename, stat_buf);
1054 st_mode = stat_buf->st_mode;
1062 g_scanner_free_value (GTokenType *token_p,
1067 case G_TOKEN_STRING:
1068 case G_TOKEN_IDENTIFIER:
1069 case G_TOKEN_IDENTIFIER_NULL:
1070 case G_TOKEN_COMMENT_SINGLE:
1071 case G_TOKEN_COMMENT_MULTI:
1072 g_free (value_p->v_string);
1079 *token_p = G_TOKEN_NONE;
1083 g_scanner_get_token_i (GScanner *scanner,
1084 GTokenType *token_p,
1091 g_scanner_free_value (token_p, value_p);
1092 g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
1094 while (((*token_p > 0 && *token_p < 256) &&
1095 strchr (scanner->config->cset_skip_characters, *token_p)) ||
1096 (*token_p == G_TOKEN_CHAR &&
1097 strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
1098 (*token_p == G_TOKEN_COMMENT_MULTI &&
1099 scanner->config->skip_comment_multi) ||
1100 (*token_p == G_TOKEN_COMMENT_SINGLE &&
1101 scanner->config->skip_comment_single));
1105 case G_TOKEN_IDENTIFIER:
1106 if (scanner->config->identifier_2_string)
1107 *token_p = G_TOKEN_STRING;
1110 case G_TOKEN_SYMBOL:
1111 if (scanner->config->symbol_2_token)
1112 *token_p = (GTokenType) value_p->v_symbol;
1115 case G_TOKEN_BINARY:
1118 if (scanner->config->numbers_2_int)
1119 *token_p = G_TOKEN_INT;
1126 if (*token_p == G_TOKEN_INT &&
1127 scanner->config->int_2_float)
1129 *token_p = G_TOKEN_FLOAT;
1130 value_p->v_float = value_p->v_int;
1137 g_scanner_get_token_ll (GScanner *scanner,
1138 GTokenType *token_p,
1143 register GScannerConfig *config;
1144 register gboolean in_comment_multi;
1145 register gboolean in_comment_single;
1146 register gboolean in_string_sq;
1147 register gboolean in_string_dq;
1149 register GTokenType token;
1150 register GValue value;
1151 register GString *gstring;
1153 config = scanner->config;
1154 (*value_p).v_int = 0;
1156 if (scanner->token == G_TOKEN_EOF ||
1157 (!scanner->text_len &&
1158 (scanner->input_fd < 0 ||
1159 scanner->peeked_char == 0)))
1161 *token_p = G_TOKEN_EOF;
1165 in_comment_multi = FALSE;
1166 in_comment_single = FALSE;
1167 in_string_sq = FALSE;
1168 in_string_dq = FALSE;
1173 register gboolean dotted_float = FALSE;
1175 ch = g_scanner_get_char (scanner, line_p, position_p);
1178 token = G_TOKEN_NONE;
1180 /* this is *evil*, but needed ;(
1181 * we first check for identifier first character, because it
1182 * might interfere with other key chars like slashes or numbers
1184 if (config->scan_identifier &&
1185 ch && strchr (config->cset_identifier_first, ch))
1186 goto identifier_precedence;
1190 register gboolean in_number;
1191 static gchar *endptr;
1194 token = G_TOKEN_EOF;
1200 if (!config->scan_comment_multi ||
1201 g_scanner_peek_next_char (scanner) != '*')
1203 g_scanner_get_char (scanner, line_p, position_p);
1204 token = G_TOKEN_COMMENT_MULTI;
1205 in_comment_multi = TRUE;
1206 gstring = g_string_new ("");
1207 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1209 if (ch == '*' && g_scanner_peek_next_char (scanner) == '/')
1211 g_scanner_get_char (scanner, line_p, position_p);
1212 in_comment_multi = FALSE;
1216 gstring = g_string_append_c (gstring, ch);
1222 if (!config->scan_string_sq)
1224 token = G_TOKEN_STRING;
1225 in_string_sq = TRUE;
1226 gstring = g_string_new ("");
1227 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1231 in_string_sq = FALSE;
1235 gstring = g_string_append_c (gstring, ch);
1241 if (!config->scan_string_dq)
1243 token = G_TOKEN_STRING;
1244 in_string_dq = TRUE;
1245 gstring = g_string_new ("");
1246 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1250 in_string_dq = FALSE;
1257 ch = g_scanner_get_char (scanner, line_p, position_p);
1261 register guint fchar;
1267 gstring = g_string_append_c (gstring, '\\');
1271 gstring = g_string_append_c (gstring, '\n');
1275 gstring = g_string_append_c (gstring, '\t');
1279 gstring = g_string_append_c (gstring, '\r');
1283 gstring = g_string_append_c (gstring, '\b');
1287 gstring = g_string_append_c (gstring, '\f');
1299 fchar = g_scanner_peek_next_char (scanner);
1300 if (fchar >= '0' && fchar <= '7')
1302 ch = g_scanner_get_char (scanner, line_p, position_p);
1303 i= i * 8 + ch - '0';
1304 fchar = g_scanner_peek_next_char (scanner);
1305 if (fchar >= '0' && fchar <= '7')
1307 ch = g_scanner_get_char (scanner, line_p, position_p);
1308 i = i * 8 + ch - '0';
1311 gstring = g_string_append_c (gstring, i);
1315 gstring = g_string_append_c (gstring, ch);
1320 gstring = g_string_append_c (gstring, ch);
1327 if (!config->scan_float)
1329 token = G_TOKEN_FLOAT;
1330 dotted_float = TRUE;
1331 ch = g_scanner_get_char (scanner, line_p, position_p);
1332 goto number_parsing;
1335 if (!config->scan_hex_dollar)
1337 token = G_TOKEN_HEX;
1338 ch = g_scanner_get_char (scanner, line_p, position_p);
1339 goto number_parsing;
1342 if (config->scan_octal)
1343 token = G_TOKEN_OCTAL;
1345 token = G_TOKEN_INT;
1346 ch = g_scanner_peek_next_char (scanner);
1347 if (config->scan_hex && (ch == 'x' || ch == 'X'))
1349 token = G_TOKEN_HEX;
1350 g_scanner_get_char (scanner, line_p, position_p);
1351 ch = g_scanner_get_char (scanner, line_p, position_p);
1354 token = G_TOKEN_ERROR;
1355 value.v_error = G_ERR_UNEXP_EOF;
1359 if (g_scanner_char_2_num (ch, 16) < 0)
1361 token = G_TOKEN_ERROR;
1362 value.v_error = G_ERR_DIGIT_RADIX;
1367 else if (config->scan_binary && (ch == 'b' || ch == 'B'))
1369 token = G_TOKEN_BINARY;
1370 g_scanner_get_char (scanner, line_p, position_p);
1371 ch = g_scanner_get_char (scanner, line_p, position_p);
1374 token = G_TOKEN_ERROR;
1375 value.v_error = G_ERR_UNEXP_EOF;
1379 if (g_scanner_char_2_num (ch, 10) < 0)
1381 token = G_TOKEN_ERROR;
1382 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1400 if (token == G_TOKEN_NONE)
1401 token = G_TOKEN_INT;
1403 gstring = g_string_new (dotted_float ? "0." : "");
1404 gstring = g_string_append_c (gstring, ch);
1408 register gboolean is_E;
1410 is_E = (ch == 'e' || ch == 'E') && token == G_TOKEN_FLOAT;
1411 ch = g_scanner_peek_next_char (scanner);
1413 if (g_scanner_char_2_num (ch, 36) >= 0 ||
1414 (config->scan_float && ch == '.') ||
1415 (is_E && ch == '+') ||
1416 (is_E && ch == '-') )
1417 ch = g_scanner_get_char (scanner, line_p, position_p);
1425 if (token != G_TOKEN_INT &&
1426 token != G_TOKEN_OCTAL)
1428 token = G_TOKEN_ERROR;
1429 if (token == G_TOKEN_FLOAT)
1430 value.v_error = G_ERR_FLOAT_MALFORMED;
1432 value.v_error = G_ERR_FLOAT_RADIX;
1437 token = G_TOKEN_FLOAT;
1438 gstring = g_string_append_c (gstring, ch);
1452 gstring = g_string_append_c (gstring, ch);
1457 if (token != G_TOKEN_FLOAT)
1459 token = G_TOKEN_ERROR;
1460 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1464 gstring = g_string_append_c (gstring, ch);
1469 if ((token != G_TOKEN_HEX && !config->scan_float) ||
1470 (token != G_TOKEN_HEX &&
1471 token != G_TOKEN_OCTAL &&
1472 token != G_TOKEN_FLOAT &&
1473 token != G_TOKEN_INT))
1475 token = G_TOKEN_ERROR;
1476 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1481 if (token != G_TOKEN_HEX)
1482 token = G_TOKEN_FLOAT;
1483 gstring = g_string_append_c (gstring, ch);
1488 if (token != G_TOKEN_HEX)
1490 token = G_TOKEN_ERROR;
1491 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1495 gstring = g_string_append_c (gstring, ch);
1502 case G_TOKEN_BINARY:
1503 value.v_binary = strtol (gstring->str, &endptr, 2);
1507 value.v_octal = strtol (gstring->str, &endptr, 8);
1511 value.v_int = strtol (gstring->str, &endptr, 10);
1515 value.v_float = g_strtod (gstring->str, &endptr);
1519 value.v_hex = strtol (gstring->str, &endptr, 16);
1525 if (endptr && *endptr)
1527 token = G_TOKEN_ERROR;
1528 if (*endptr == 'e' || *endptr == 'E')
1529 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1531 value.v_error = G_ERR_DIGIT_RADIX;
1533 g_string_free (gstring, TRUE);
1540 if (config->cpair_comment_single &&
1541 ch == config->cpair_comment_single[0])
1543 token = G_TOKEN_COMMENT_SINGLE;
1544 in_comment_single = TRUE;
1545 gstring = g_string_new ("");
1546 while ((ch = g_scanner_get_char (scanner,
1550 if (ch == config->cpair_comment_single[1])
1552 in_comment_single = FALSE;
1557 gstring = g_string_append_c (gstring, ch);
1561 else if (config->scan_identifier && ch &&
1562 strchr (config->cset_identifier_first, ch))
1564 identifier_precedence:
1566 if (config->cset_identifier_nth && ch &&
1567 strchr (config->cset_identifier_nth,
1568 g_scanner_peek_next_char (scanner)))
1570 token = G_TOKEN_IDENTIFIER;
1571 gstring = g_string_new ("");
1572 gstring = g_string_append_c (gstring, ch);
1575 ch = g_scanner_get_char (scanner, line_p, position_p);
1576 gstring = g_string_append_c (gstring, ch);
1577 ch = g_scanner_peek_next_char (scanner);
1579 while (ch && strchr (config->cset_identifier_nth, ch));
1582 else if (config->scan_identifier_1char)
1584 token = G_TOKEN_IDENTIFIER;
1585 value.v_identifier = g_new0 (gchar, 2);
1586 value.v_identifier[0] = ch;
1592 if (config->char_2_token)
1596 token = G_TOKEN_CHAR;
1603 g_assert (ch == 0 && token != G_TOKEN_NONE);
1607 if (in_comment_multi ||
1608 in_comment_single ||
1612 token = G_TOKEN_ERROR;
1615 g_string_free (gstring, TRUE);
1619 if (in_comment_multi || in_comment_single)
1620 value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
1621 else if (in_string_sq || in_string_dq)
1622 value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
1627 value.v_string = gstring->str;
1628 g_string_free (gstring, FALSE);
1632 if (token == G_TOKEN_IDENTIFIER &&
1633 config->scan_symbols)
1635 register GScannerKey *key;
1636 register guint scope_id;
1638 scope_id = scanner->scope_id;
1639 key = g_scanner_lookup_internal (scanner, scope_id, value.v_identifier);
1640 if (!key && scope_id && scanner->config->scope_0_fallback)
1641 key = g_scanner_lookup_internal (scanner, 0, value.v_identifier);
1645 g_free (value.v_identifier);
1646 token = G_TOKEN_SYMBOL;
1647 value.v_symbol = key->value;
1651 if (token == G_TOKEN_IDENTIFIER &&
1652 config->scan_identifier_NULL &&
1653 strlen (value.v_identifier) == 4)
1655 gchar *null_upper = "NULL";
1656 gchar *null_lower = "null";
1658 if (scanner->config->case_sensitive)
1660 if (value.v_identifier[0] == null_upper[0] &&
1661 value.v_identifier[1] == null_upper[1] &&
1662 value.v_identifier[2] == null_upper[2] &&
1663 value.v_identifier[3] == null_upper[3])
1664 token = G_TOKEN_IDENTIFIER_NULL;
1668 if ((value.v_identifier[0] == null_upper[0] ||
1669 value.v_identifier[0] == null_lower[0]) &&
1670 (value.v_identifier[1] == null_upper[1] ||
1671 value.v_identifier[1] == null_lower[1]) &&
1672 (value.v_identifier[2] == null_upper[2] ||
1673 value.v_identifier[2] == null_lower[2]) &&
1674 (value.v_identifier[3] == null_upper[3] ||
1675 value.v_identifier[3] == null_lower[3]))
1676 token = G_TOKEN_IDENTIFIER_NULL;