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__
33 #include <sys/types.h> /* needed for sys/stat.h */
36 #include <io.h> /* For _read() */
40 #define to_lower(c) ( \
42 ( (((guchar)(c))>='A' && ((guchar)(c))<='Z') * ('a'-'A') ) | \
43 ( (((guchar)(c))>=192 && ((guchar)(c))<=214) * (224-192) ) | \
44 ( (((guchar)(c))>=216 && ((guchar)(c))<=222) * (248-216) ) | \
48 #define READ_BUFFER_SIZE (4000)
51 /* --- typedefs --- */
52 typedef struct _GScannerKey GScannerKey;
63 /* --- variables --- */
64 static GScannerConfig g_scanner_config_template =
68 ) /* cset_skip_characters */,
73 ) /* cset_identifier_first */,
80 ) /* cset_identifier_nth */,
81 ( "#\n" ) /* cpair_comment_single */,
83 FALSE /* case_sensitive */,
85 TRUE /* skip_comment_multi */,
86 TRUE /* skip_comment_single */,
87 TRUE /* scan_comment_multi */,
88 TRUE /* scan_identifier */,
89 FALSE /* scan_identifier_1char */,
90 FALSE /* scan_identifier_NULL */,
91 TRUE /* scan_symbols */,
92 FALSE /* scan_binary */,
93 TRUE /* scan_octal */,
94 TRUE /* scan_float */,
96 FALSE /* scan_hex_dollar */,
97 TRUE /* scan_string_sq */,
98 TRUE /* scan_string_dq */,
99 TRUE /* numbers_2_int */,
100 FALSE /* int_2_float */,
101 FALSE /* identifier_2_string */,
102 TRUE /* char_2_token */,
103 FALSE /* symbol_2_token */,
104 FALSE /* scope_0_fallback */,
108 /* --- prototypes --- */
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,
118 GTokenValue *value_p,
121 static void g_scanner_get_token_i (GScanner *scanner,
123 GTokenValue *value_p,
127 static guchar g_scanner_peek_next_char (GScanner *scanner);
128 static guchar g_scanner_get_char (GScanner *scanner,
131 static void g_scanner_msg_handler (GScanner *scanner,
136 /* --- functions --- */
138 g_scanner_char_2_num (guchar c,
141 if (c >= '0' && c <= '9')
143 else if (c >= 'A' && c <= 'Z')
145 else if (c >= 'a' && c <= 'z')
157 g_scanner_new (GScannerConfig *config_templ)
159 register GScanner *scanner;
162 config_templ = &g_scanner_config_template;
164 scanner = g_new0 (GScanner, 1);
166 scanner->user_data = NULL;
167 scanner->max_parse_errors = 0;
168 scanner->parse_errors = 0;
169 scanner->input_name = NULL;
170 scanner->derived_data = NULL;
172 scanner->config = g_new0 (GScannerConfig, 1);
174 scanner->config->case_sensitive = config_templ->case_sensitive;
175 scanner->config->cset_skip_characters = config_templ->cset_skip_characters;
176 scanner->config->cset_identifier_first= config_templ->cset_identifier_first;
177 scanner->config->cset_identifier_nth = config_templ->cset_identifier_nth;
178 scanner->config->cpair_comment_single = config_templ->cpair_comment_single;
179 scanner->config->skip_comment_multi = config_templ->skip_comment_multi;
180 scanner->config->skip_comment_single = config_templ->skip_comment_single;
181 scanner->config->scan_comment_multi = config_templ->scan_comment_multi;
182 scanner->config->scan_identifier = config_templ->scan_identifier;
183 scanner->config->scan_identifier_1char= config_templ->scan_identifier_1char;
184 scanner->config->scan_identifier_NULL = config_templ->scan_identifier_NULL;
185 scanner->config->scan_symbols = config_templ->scan_symbols;
186 scanner->config->scan_binary = config_templ->scan_binary;
187 scanner->config->scan_octal = config_templ->scan_octal;
188 scanner->config->scan_float = config_templ->scan_float;
189 scanner->config->scan_hex = config_templ->scan_hex;
190 scanner->config->scan_hex_dollar = config_templ->scan_hex_dollar;
191 scanner->config->scan_string_sq = config_templ->scan_string_sq;
192 scanner->config->scan_string_dq = config_templ->scan_string_dq;
193 scanner->config->numbers_2_int = config_templ->numbers_2_int;
194 scanner->config->int_2_float = config_templ->int_2_float;
195 scanner->config->identifier_2_string = config_templ->identifier_2_string;
196 scanner->config->char_2_token = config_templ->char_2_token;
197 scanner->config->symbol_2_token = config_templ->symbol_2_token;
198 scanner->config->scope_0_fallback = config_templ->scope_0_fallback;
200 scanner->token = G_TOKEN_NONE;
201 scanner->value.v_int = 0;
203 scanner->position = 0;
205 scanner->next_token = G_TOKEN_NONE;
206 scanner->next_value.v_int = 0;
207 scanner->next_line = 1;
208 scanner->next_position = 0;
210 scanner->symbol_table = g_hash_table_new (g_scanner_key_hash, g_scanner_key_equal);
211 scanner->input_fd = -1;
212 scanner->text = NULL;
213 scanner->text_end = NULL;
214 scanner->buffer = NULL;
215 scanner->scope_id = 0;
217 scanner->msg_handler = g_scanner_msg_handler;
223 g_scanner_free_value (GTokenType *token_p,
224 GTokenValue *value_p)
229 case G_TOKEN_IDENTIFIER:
230 case G_TOKEN_IDENTIFIER_NULL:
231 case G_TOKEN_COMMENT_SINGLE:
232 case G_TOKEN_COMMENT_MULTI:
233 g_free (value_p->v_string);
240 *token_p = G_TOKEN_NONE;
244 g_scanner_destroy_symbol_table_entry (gpointer _key,
248 GScannerKey *key = _key;
250 g_free (key->symbol);
255 g_scanner_destroy (GScanner *scanner)
257 g_return_if_fail (scanner != NULL);
259 g_hash_table_foreach (scanner->symbol_table,
260 g_scanner_destroy_symbol_table_entry, NULL);
261 g_hash_table_destroy (scanner->symbol_table);
262 g_scanner_free_value (&scanner->token, &scanner->value);
263 g_scanner_free_value (&scanner->next_token, &scanner->next_value);
264 g_free (scanner->config);
265 g_free (scanner->buffer);
270 g_scanner_msg_handler (GScanner *scanner,
274 g_return_if_fail (scanner != NULL);
276 fprintf (stdout, "%s:%d: ", scanner->input_name, scanner->line);
278 fprintf (stdout, "error: ");
279 fprintf (stdout, "%s\n", message);
283 g_scanner_error (GScanner *scanner,
287 g_return_if_fail (scanner != NULL);
288 g_return_if_fail (format != NULL);
290 scanner->parse_errors++;
292 if (scanner->msg_handler)
297 va_start (args, format);
298 string = g_strdup_vprintf (format, args);
301 scanner->msg_handler (scanner, string, TRUE);
308 g_scanner_warn (GScanner *scanner,
312 g_return_if_fail (scanner != NULL);
313 g_return_if_fail (format != NULL);
315 if (scanner->msg_handler)
320 va_start (args, format);
321 string = g_strdup_vprintf (format, args);
324 scanner->msg_handler (scanner, string, FALSE);
331 g_scanner_key_equal (gconstpointer v1,
334 register const GScannerKey *key1 = v1;
335 register const GScannerKey *key2 = v2;
337 return (key1->scope_id == key2->scope_id) && (strcmp (key1->symbol, key2->symbol) == 0);
341 g_scanner_key_hash (gconstpointer v)
343 register const GScannerKey *key = v;
348 for (c = key->symbol; *c; c++)
364 static inline GScannerKey*
365 g_scanner_lookup_internal (GScanner *scanner,
369 register GScannerKey *key_p;
372 key.scope_id = scope_id;
374 if (!scanner->config->case_sensitive)
377 register const gchar *c;
379 key.symbol = g_new (gchar, strlen (symbol) + 1);
380 for (d = key.symbol, c = symbol; *c; c++, d++)
383 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
388 key.symbol = (gchar*) symbol;
389 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
396 g_scanner_scope_add_symbol (GScanner *scanner,
401 register GScannerKey *key;
403 g_return_if_fail (scanner != NULL);
404 g_return_if_fail (symbol != NULL);
406 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
410 key = g_new (GScannerKey, 1);
411 key->scope_id = scope_id;
412 key->symbol = g_strdup (symbol);
414 if (!scanner->config->case_sensitive)
425 g_hash_table_insert (scanner->symbol_table, key, key);
432 g_scanner_scope_remove_symbol (GScanner *scanner,
436 register GScannerKey *key;
438 g_return_if_fail (scanner != NULL);
439 g_return_if_fail (symbol != NULL);
441 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
445 g_hash_table_remove (scanner->symbol_table, key);
446 g_free (key->symbol);
452 g_scanner_lookup_symbol (GScanner *scanner,
455 register GScannerKey *key;
456 register guint scope_id;
458 g_return_val_if_fail (scanner != NULL, NULL);
463 scope_id = scanner->scope_id;
464 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
465 if (!key && scope_id && scanner->config->scope_0_fallback)
466 key = g_scanner_lookup_internal (scanner, 0, symbol);
475 g_scanner_scope_lookup_symbol (GScanner *scanner,
479 register GScannerKey *key;
481 g_return_val_if_fail (scanner != NULL, NULL);
486 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
495 g_scanner_set_scope (GScanner *scanner,
498 register guint old_scope_id;
500 g_return_val_if_fail (scanner != NULL, 0);
502 old_scope_id = scanner->scope_id;
503 scanner->scope_id = scope_id;
509 g_scanner_foreach_internal (gpointer _key,
513 register GScannerKey *key;
514 register gpointer *d;
515 register GHFunc func;
516 register gpointer func_data;
517 register guint *scope_id;
520 func = (GHFunc) d[0];
525 if (key->scope_id == *scope_id)
526 func (key->symbol, key->value, func_data);
530 g_scanner_scope_foreach_symbol (GScanner *scanner,
537 g_return_if_fail (scanner != NULL);
539 d[0] = (gpointer) func;
543 g_hash_table_foreach (scanner->symbol_table, g_scanner_foreach_internal, d);
547 g_scanner_freeze_symbol_table (GScanner *scanner)
549 g_return_if_fail (scanner != NULL);
551 g_hash_table_freeze (scanner->symbol_table);
555 g_scanner_thaw_symbol_table (GScanner *scanner)
557 g_return_if_fail (scanner != NULL);
559 g_hash_table_thaw (scanner->symbol_table);
563 g_scanner_peek_next_token (GScanner *scanner)
565 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
567 if (scanner->next_token == G_TOKEN_NONE)
569 scanner->next_line = scanner->line;
570 scanner->next_position = scanner->position;
571 g_scanner_get_token_i (scanner,
572 &scanner->next_token,
573 &scanner->next_value,
575 &scanner->next_position);
578 return scanner->next_token;
582 g_scanner_get_next_token (GScanner *scanner)
584 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
586 if (scanner->next_token != G_TOKEN_NONE)
588 g_scanner_free_value (&scanner->token, &scanner->value);
590 scanner->token = scanner->next_token;
591 scanner->value = scanner->next_value;
592 scanner->line = scanner->next_line;
593 scanner->position = scanner->next_position;
594 scanner->next_token = G_TOKEN_NONE;
597 g_scanner_get_token_i (scanner,
603 return scanner->token;
607 g_scanner_cur_token (GScanner *scanner)
609 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
611 return scanner->token;
615 g_scanner_cur_value (GScanner *scanner)
619 g_return_val_if_fail (scanner != NULL, v);
621 /* MSC isn't capable of handling return scanner->value; ? */
631 g_scanner_cur_line (GScanner *scanner)
633 g_return_val_if_fail (scanner != NULL, 0);
635 return scanner->line;
639 g_scanner_cur_position (GScanner *scanner)
641 g_return_val_if_fail (scanner != NULL, 0);
643 return scanner->position;
647 g_scanner_eof (GScanner *scanner)
649 g_return_val_if_fail (scanner != NULL, TRUE);
651 return scanner->token == G_TOKEN_EOF;
655 g_scanner_input_file (GScanner *scanner,
658 g_return_if_fail (scanner != NULL);
659 g_return_if_fail (input_fd >= 0);
661 scanner->token = G_TOKEN_NONE;
662 scanner->value.v_int = 0;
664 scanner->position = 0;
665 scanner->next_token = G_TOKEN_NONE;
667 scanner->input_fd = input_fd;
668 scanner->text = NULL;
669 scanner->text_end = NULL;
671 if (!scanner->buffer)
672 scanner->buffer = g_new (gchar, READ_BUFFER_SIZE + 1);
676 g_scanner_input_text (GScanner *scanner,
680 g_return_if_fail (scanner != NULL);
682 g_return_if_fail (text != NULL);
686 scanner->token = G_TOKEN_NONE;
687 scanner->value.v_int = 0;
689 scanner->position = 0;
690 scanner->next_token = G_TOKEN_NONE;
692 scanner->input_fd = -1;
693 scanner->text = text;
694 scanner->text_end = text + text_len;
698 g_free (scanner->buffer);
699 scanner->buffer = NULL;
704 g_scanner_peek_next_char (GScanner *scanner)
706 if (scanner->text < scanner->text_end)
708 return *scanner->text;
710 else if (scanner->input_fd >= 0)
713 register gchar *buffer;
715 buffer = scanner->buffer;
718 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
720 while (count == -1 && (errno == EINTR || errno == EAGAIN));
724 scanner->input_fd = -1;
730 scanner->text = buffer;
731 scanner->text_end = buffer + count;
741 g_scanner_get_char (GScanner *scanner,
745 register guchar fchar;
747 if (scanner->text < scanner->text_end)
748 fchar = *(scanner->text++);
749 else if (scanner->input_fd >= 0)
752 register gchar *buffer;
754 buffer = scanner->buffer;
757 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
759 while (count == -1 && (errno == EINTR || errno == EAGAIN));
763 scanner->input_fd = -1;
768 scanner->text = buffer + 1;
769 scanner->text_end = buffer + count;
790 g_scanner_unexp_token (GScanner *scanner,
791 GTokenType expected_token,
792 const gchar *identifier_spec,
793 const gchar *symbol_spec,
794 const gchar *symbol_name,
795 const gchar *message,
798 register gchar *token_string;
799 register guint token_string_len;
800 register gchar *expected_string;
801 register guint expected_string_len;
802 register gchar *message_prefix;
803 register gboolean print_unexp;
804 void (*msg_handler) (GScanner*, const gchar*, ...);
806 g_return_if_fail (scanner != NULL);
809 msg_handler = g_scanner_error;
811 msg_handler = g_scanner_warn;
813 if (!identifier_spec)
814 identifier_spec = "identifier";
816 symbol_spec = "symbol";
818 token_string_len = 56;
819 token_string = g_new (gchar, token_string_len + 1);
820 expected_string_len = 64;
821 expected_string = g_new (gchar, expected_string_len + 1);
824 switch (scanner->token)
827 g_snprintf (token_string, token_string_len, "end of file");
831 if (scanner->token >= 1 && scanner->token <= 255)
833 if ((scanner->token >= ' ' && scanner->token <= '~') ||
834 strchr (scanner->config->cset_identifier_first, scanner->token) ||
835 strchr (scanner->config->cset_identifier_nth, scanner->token))
836 g_snprintf (token_string, expected_string_len, "character `%c'", scanner->token);
838 g_snprintf (token_string, expected_string_len, "character `\\%o'", scanner->token);
841 else if (!scanner->config->symbol_2_token)
843 g_snprintf (token_string, token_string_len, "(unknown) token <%d>", scanner->token);
848 if (expected_token == G_TOKEN_SYMBOL ||
849 (scanner->config->symbol_2_token &&
850 expected_token > G_TOKEN_LAST))
853 g_snprintf (token_string,
856 print_unexp ? "" : "invalid ",
860 g_snprintf (token_string,
863 print_unexp ? "" : "invalid ",
869 expected_token = G_TOKEN_NONE;
870 switch (scanner->value.v_error)
872 case G_ERR_UNEXP_EOF:
873 g_snprintf (token_string, token_string_len, "scanner: unexpected end of file");
876 case G_ERR_UNEXP_EOF_IN_STRING:
877 g_snprintf (token_string, token_string_len, "scanner: unterminated string constant");
880 case G_ERR_UNEXP_EOF_IN_COMMENT:
881 g_snprintf (token_string, token_string_len, "scanner: unterminated comment");
884 case G_ERR_NON_DIGIT_IN_CONST:
885 g_snprintf (token_string, token_string_len, "scanner: non digit in constant");
888 case G_ERR_FLOAT_RADIX:
889 g_snprintf (token_string, token_string_len, "scanner: invalid radix for floating constant");
892 case G_ERR_FLOAT_MALFORMED:
893 g_snprintf (token_string, token_string_len, "scanner: malformed floating constant");
896 case G_ERR_DIGIT_RADIX:
897 g_snprintf (token_string, token_string_len, "scanner: digit is beyond radix");
902 g_snprintf (token_string, token_string_len, "scanner: unknown error");
908 g_snprintf (token_string, token_string_len, "character `%c'", scanner->value.v_char);
911 case G_TOKEN_IDENTIFIER:
912 if (expected_token == G_TOKEN_IDENTIFIER)
914 g_snprintf (token_string,
917 print_unexp ? "" : "invalid ",
919 scanner->value.v_string);
926 g_snprintf (token_string, token_string_len, "number `%ld'", scanner->value.v_int);
930 g_snprintf (token_string, token_string_len, "number `%.3f'", scanner->value.v_float);
934 if (expected_token == G_TOKEN_STRING)
936 g_snprintf (token_string,
938 "%s%sstring constant \"%s\"",
939 print_unexp ? "" : "invalid ",
940 scanner->value.v_string[0] == 0 ? "empty " : "",
941 scanner->value.v_string);
942 token_string[token_string_len - 2] = '"';
943 token_string[token_string_len - 1] = 0;
946 case G_TOKEN_COMMENT_SINGLE:
947 case G_TOKEN_COMMENT_MULTI:
948 g_snprintf (token_string, token_string_len, "comment");
952 /* somehow the user's parsing code is screwed, there isn't much
953 * we can do about it.
954 * Note, a common case to trigger this is
955 * g_scanner_peek_next_token(); g_scanner_unexp_token();
956 * without an intermediate g_scanner_get_next_token().
958 g_assert_not_reached ();
963 switch (expected_token)
968 if (expected_token >= 1 && expected_token <= 255)
970 if ((expected_token >= ' ' && expected_token <= '~') ||
971 strchr (scanner->config->cset_identifier_first, expected_token) ||
972 strchr (scanner->config->cset_identifier_nth, expected_token))
973 g_snprintf (expected_string, expected_string_len, "character `%c'", expected_token);
975 g_snprintf (expected_string, expected_string_len, "character `\\%o'", expected_token);
978 else if (!scanner->config->symbol_2_token)
980 g_snprintf (expected_string, expected_string_len, "(unknown) token <%d>", expected_token);
985 need_valid = (scanner->token == G_TOKEN_SYMBOL ||
986 (scanner->config->symbol_2_token &&
987 scanner->token > G_TOKEN_LAST));
988 g_snprintf (expected_string,
991 need_valid ? "valid " : "",
993 /* FIXME: should we attempt to lookup the symbol_name for symbol_2_token? */
997 g_snprintf (expected_string, expected_string_len, "number (integer)");
1001 g_snprintf (expected_string, expected_string_len, "number (float)");
1004 case G_TOKEN_STRING:
1005 g_snprintf (expected_string,
1006 expected_string_len,
1007 "%sstring constant",
1008 scanner->token == G_TOKEN_STRING ? "valid " : "");
1011 case G_TOKEN_IDENTIFIER:
1012 g_snprintf (expected_string,
1013 expected_string_len,
1015 scanner->token == G_TOKEN_IDENTIFIER ? "valid " : "",
1023 if (message && message[0] != 0)
1024 message_prefix = " - ";
1027 message_prefix = "";
1031 if (expected_token != G_TOKEN_NONE)
1034 msg_handler (scanner,
1035 "unexpected %s, expected %s%s%s",
1041 msg_handler (scanner,
1042 "%s, expected %s%s%s",
1051 msg_handler (scanner,
1052 "unexpected %s%s%s",
1057 msg_handler (scanner,
1064 g_free (token_string);
1065 g_free (expected_string);
1069 g_scanner_stat_mode (const gchar *filename)
1071 struct stat *stat_buf;
1074 stat_buf = g_new0 (struct stat, 1);
1076 lstat (filename, stat_buf);
1078 stat (filename, stat_buf);
1080 st_mode = stat_buf->st_mode;
1088 g_scanner_get_token_i (GScanner *scanner,
1089 GTokenType *token_p,
1090 GTokenValue *value_p,
1096 g_scanner_free_value (token_p, value_p);
1097 g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
1099 while (((*token_p > 0 && *token_p < 256) &&
1100 strchr (scanner->config->cset_skip_characters, *token_p)) ||
1101 (*token_p == G_TOKEN_CHAR &&
1102 strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
1103 (*token_p == G_TOKEN_COMMENT_MULTI &&
1104 scanner->config->skip_comment_multi) ||
1105 (*token_p == G_TOKEN_COMMENT_SINGLE &&
1106 scanner->config->skip_comment_single));
1110 case G_TOKEN_IDENTIFIER:
1111 if (scanner->config->identifier_2_string)
1112 *token_p = G_TOKEN_STRING;
1115 case G_TOKEN_SYMBOL:
1116 if (scanner->config->symbol_2_token)
1117 *token_p = (GTokenType) value_p->v_symbol;
1120 case G_TOKEN_BINARY:
1123 if (scanner->config->numbers_2_int)
1124 *token_p = G_TOKEN_INT;
1131 if (*token_p == G_TOKEN_INT &&
1132 scanner->config->int_2_float)
1134 *token_p = G_TOKEN_FLOAT;
1135 value_p->v_float = value_p->v_int;
1142 g_scanner_get_token_ll (GScanner *scanner,
1143 GTokenType *token_p,
1144 GTokenValue *value_p,
1148 register GScannerConfig *config;
1149 register GTokenType token;
1150 register gboolean in_comment_multi;
1151 register gboolean in_comment_single;
1152 register gboolean in_string_sq;
1153 register gboolean in_string_dq;
1154 register GString *gstring;
1158 config = scanner->config;
1159 (*value_p).v_int = 0;
1161 if ((scanner->text >= scanner->text_end && scanner->input_fd < 0) ||
1162 scanner->token == G_TOKEN_EOF)
1164 *token_p = G_TOKEN_EOF;
1168 in_comment_multi = FALSE;
1169 in_comment_single = FALSE;
1170 in_string_sq = FALSE;
1171 in_string_dq = FALSE;
1174 do /* while (ch != 0) */
1176 register gboolean dotted_float = FALSE;
1178 ch = g_scanner_get_char (scanner, line_p, position_p);
1181 token = G_TOKEN_NONE;
1183 /* this is *evil*, but needed ;(
1184 * we first check for identifier first character, because it
1185 * might interfere with other key chars like slashes or numbers
1187 if (config->scan_identifier &&
1188 ch && strchr (config->cset_identifier_first, ch))
1189 goto identifier_precedence;
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;
1401 register gboolean in_number = TRUE;
1404 if (token == G_TOKEN_NONE)
1405 token = G_TOKEN_INT;
1407 gstring = g_string_new (dotted_float ? "0." : "");
1408 gstring = g_string_append_c (gstring, ch);
1410 do /* while (in_number) */
1412 register gboolean is_E;
1414 is_E = token == G_TOKEN_FLOAT && (ch == 'e' || ch == 'E');
1416 ch = g_scanner_peek_next_char (scanner);
1418 if (g_scanner_char_2_num (ch, 36) >= 0 ||
1419 (config->scan_float && ch == '.') ||
1420 (is_E && (ch == '+' || ch == '-')))
1422 ch = g_scanner_get_char (scanner, line_p, position_p);
1427 if (token != G_TOKEN_INT && token != G_TOKEN_OCTAL)
1429 value.v_error = token == G_TOKEN_FLOAT ? G_ERR_FLOAT_MALFORMED : G_ERR_FLOAT_RADIX;
1430 token = G_TOKEN_ERROR;
1435 token = G_TOKEN_FLOAT;
1436 gstring = g_string_append_c (gstring, ch);
1450 gstring = g_string_append_c (gstring, ch);
1455 if (token != G_TOKEN_FLOAT)
1457 token = G_TOKEN_ERROR;
1458 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1462 gstring = g_string_append_c (gstring, ch);
1467 if ((token != G_TOKEN_HEX && !config->scan_float) ||
1468 (token != G_TOKEN_HEX &&
1469 token != G_TOKEN_OCTAL &&
1470 token != G_TOKEN_FLOAT &&
1471 token != G_TOKEN_INT))
1473 token = G_TOKEN_ERROR;
1474 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1479 if (token != G_TOKEN_HEX)
1480 token = G_TOKEN_FLOAT;
1481 gstring = g_string_append_c (gstring, ch);
1486 if (token != G_TOKEN_HEX)
1488 token = G_TOKEN_ERROR;
1489 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1493 gstring = g_string_append_c (gstring, ch);
1505 case G_TOKEN_BINARY:
1506 value.v_binary = strtol (gstring->str, &endptr, 2);
1510 value.v_octal = strtol (gstring->str, &endptr, 8);
1514 value.v_int = strtol (gstring->str, &endptr, 10);
1518 value.v_float = g_strtod (gstring->str, &endptr);
1522 value.v_hex = strtol (gstring->str, &endptr, 16);
1528 if (endptr && *endptr)
1530 token = G_TOKEN_ERROR;
1531 if (*endptr == 'e' || *endptr == 'E')
1532 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1534 value.v_error = G_ERR_DIGIT_RADIX;
1536 g_string_free (gstring, TRUE);
1539 } /* number_parsing:... */
1545 if (config->cpair_comment_single &&
1546 ch == config->cpair_comment_single[0])
1548 token = G_TOKEN_COMMENT_SINGLE;
1549 in_comment_single = TRUE;
1550 gstring = g_string_new ("");
1551 while ((ch = g_scanner_get_char (scanner,
1555 if (ch == config->cpair_comment_single[1])
1557 in_comment_single = FALSE;
1562 gstring = g_string_append_c (gstring, ch);
1566 else if (config->scan_identifier && ch &&
1567 strchr (config->cset_identifier_first, ch))
1569 identifier_precedence:
1571 if (config->cset_identifier_nth && ch &&
1572 strchr (config->cset_identifier_nth,
1573 g_scanner_peek_next_char (scanner)))
1575 token = G_TOKEN_IDENTIFIER;
1576 gstring = g_string_new ("");
1577 gstring = g_string_append_c (gstring, ch);
1580 ch = g_scanner_get_char (scanner, line_p, position_p);
1581 gstring = g_string_append_c (gstring, ch);
1582 ch = g_scanner_peek_next_char (scanner);
1584 while (ch && strchr (config->cset_identifier_nth, ch));
1587 else if (config->scan_identifier_1char)
1589 token = G_TOKEN_IDENTIFIER;
1590 value.v_identifier = g_new0 (gchar, 2);
1591 value.v_identifier[0] = ch;
1597 if (config->char_2_token)
1601 token = G_TOKEN_CHAR;
1606 } /* default_case:... */
1609 g_assert (ch == 0 && token != G_TOKEN_NONE); /* paranoid */
1613 if (in_comment_multi || in_comment_single ||
1614 in_string_sq || in_string_dq)
1616 token = G_TOKEN_ERROR;
1619 g_string_free (gstring, TRUE);
1623 if (in_comment_multi || in_comment_single)
1624 value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
1625 else /* (in_string_sq || in_string_dq) */
1626 value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
1631 value.v_string = gstring->str;
1632 g_string_free (gstring, FALSE);
1636 if (token == G_TOKEN_IDENTIFIER)
1638 if (config->scan_symbols)
1640 register GScannerKey *key;
1641 register guint scope_id;
1643 scope_id = scanner->scope_id;
1644 key = g_scanner_lookup_internal (scanner, scope_id, value.v_identifier);
1645 if (!key && scope_id && scanner->config->scope_0_fallback)
1646 key = g_scanner_lookup_internal (scanner, 0, value.v_identifier);
1650 g_free (value.v_identifier);
1651 token = G_TOKEN_SYMBOL;
1652 value.v_symbol = key->value;
1656 if (token == G_TOKEN_IDENTIFIER &&
1657 config->scan_identifier_NULL &&
1658 strlen (value.v_identifier) == 4)
1660 gchar *null_upper = "NULL";
1661 gchar *null_lower = "null";
1663 if (scanner->config->case_sensitive)
1665 if (value.v_identifier[0] == null_upper[0] &&
1666 value.v_identifier[1] == null_upper[1] &&
1667 value.v_identifier[2] == null_upper[2] &&
1668 value.v_identifier[3] == null_upper[3])
1669 token = G_TOKEN_IDENTIFIER_NULL;
1673 if ((value.v_identifier[0] == null_upper[0] ||
1674 value.v_identifier[0] == null_lower[0]) &&
1675 (value.v_identifier[1] == null_upper[1] ||
1676 value.v_identifier[1] == null_lower[1]) &&
1677 (value.v_identifier[2] == null_upper[2] ||
1678 value.v_identifier[2] == null_lower[2]) &&
1679 (value.v_identifier[3] == null_upper[3] ||
1680 value.v_identifier[3] == null_lower[3]))
1681 token = G_TOKEN_IDENTIFIER_NULL;