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/.
47 #include "gprintfint.h"
48 #include "gstrfuncs.h"
50 #include "gtestutils.h"
53 #include <io.h> /* For _read() */
57 #define to_lower(c) ( \
59 ( (((guchar)(c))>='A' && ((guchar)(c))<='Z') * ('a'-'A') ) | \
60 ( (((guchar)(c))>=192 && ((guchar)(c))<=214) * (224-192) ) | \
61 ( (((guchar)(c))>=216 && ((guchar)(c))<=222) * (248-216) ) | \
65 #define READ_BUFFER_SIZE (4000)
68 /* --- typedefs --- */
69 typedef struct _GScannerKey GScannerKey;
79 /* --- variables --- */
80 static const 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 */,
122 FALSE /* store_int64 */,
126 /* --- prototypes --- */
128 GScannerKey* g_scanner_lookup_internal (GScanner *scanner,
130 const gchar *symbol);
131 static gboolean g_scanner_key_equal (gconstpointer v1,
133 static guint g_scanner_key_hash (gconstpointer v);
134 static void g_scanner_get_token_ll (GScanner *scanner,
136 GTokenValue *value_p,
139 static void g_scanner_get_token_i (GScanner *scanner,
141 GTokenValue *value_p,
145 static guchar g_scanner_peek_next_char (GScanner *scanner);
146 static guchar g_scanner_get_char (GScanner *scanner,
149 static void g_scanner_msg_handler (GScanner *scanner,
154 /* --- functions --- */
156 g_scanner_char_2_num (guchar c,
159 if (c >= '0' && c <= '9')
161 else if (c >= 'A' && c <= 'Z')
163 else if (c >= 'a' && c <= 'z')
175 g_scanner_new (const GScannerConfig *config_templ)
180 config_templ = &g_scanner_config_template;
182 scanner = g_new0 (GScanner, 1);
184 scanner->user_data = NULL;
185 scanner->max_parse_errors = 1;
186 scanner->parse_errors = 0;
187 scanner->input_name = NULL;
188 g_datalist_init (&scanner->qdata);
190 scanner->config = g_new0 (GScannerConfig, 1);
192 scanner->config->case_sensitive = config_templ->case_sensitive;
193 scanner->config->cset_skip_characters = config_templ->cset_skip_characters;
194 if (!scanner->config->cset_skip_characters)
195 scanner->config->cset_skip_characters = "";
196 scanner->config->cset_identifier_first = config_templ->cset_identifier_first;
197 scanner->config->cset_identifier_nth = config_templ->cset_identifier_nth;
198 scanner->config->cpair_comment_single = config_templ->cpair_comment_single;
199 scanner->config->skip_comment_multi = config_templ->skip_comment_multi;
200 scanner->config->skip_comment_single = config_templ->skip_comment_single;
201 scanner->config->scan_comment_multi = config_templ->scan_comment_multi;
202 scanner->config->scan_identifier = config_templ->scan_identifier;
203 scanner->config->scan_identifier_1char = config_templ->scan_identifier_1char;
204 scanner->config->scan_identifier_NULL = config_templ->scan_identifier_NULL;
205 scanner->config->scan_symbols = config_templ->scan_symbols;
206 scanner->config->scan_binary = config_templ->scan_binary;
207 scanner->config->scan_octal = config_templ->scan_octal;
208 scanner->config->scan_float = config_templ->scan_float;
209 scanner->config->scan_hex = config_templ->scan_hex;
210 scanner->config->scan_hex_dollar = config_templ->scan_hex_dollar;
211 scanner->config->scan_string_sq = config_templ->scan_string_sq;
212 scanner->config->scan_string_dq = config_templ->scan_string_dq;
213 scanner->config->numbers_2_int = config_templ->numbers_2_int;
214 scanner->config->int_2_float = config_templ->int_2_float;
215 scanner->config->identifier_2_string = config_templ->identifier_2_string;
216 scanner->config->char_2_token = config_templ->char_2_token;
217 scanner->config->symbol_2_token = config_templ->symbol_2_token;
218 scanner->config->scope_0_fallback = config_templ->scope_0_fallback;
219 scanner->config->store_int64 = config_templ->store_int64;
221 scanner->token = G_TOKEN_NONE;
222 scanner->value.v_int64 = 0;
224 scanner->position = 0;
226 scanner->next_token = G_TOKEN_NONE;
227 scanner->next_value.v_int64 = 0;
228 scanner->next_line = 1;
229 scanner->next_position = 0;
231 scanner->symbol_table = g_hash_table_new (g_scanner_key_hash, g_scanner_key_equal);
232 scanner->input_fd = -1;
233 scanner->text = NULL;
234 scanner->text_end = NULL;
235 scanner->buffer = NULL;
236 scanner->scope_id = 0;
238 scanner->msg_handler = g_scanner_msg_handler;
244 g_scanner_free_value (GTokenType *token_p,
245 GTokenValue *value_p)
250 case G_TOKEN_IDENTIFIER:
251 case G_TOKEN_IDENTIFIER_NULL:
252 case G_TOKEN_COMMENT_SINGLE:
253 case G_TOKEN_COMMENT_MULTI:
254 g_free (value_p->v_string);
261 *token_p = G_TOKEN_NONE;
265 g_scanner_destroy_symbol_table_entry (gpointer _key,
269 GScannerKey *key = _key;
271 g_free (key->symbol);
276 g_scanner_destroy (GScanner *scanner)
278 g_return_if_fail (scanner != NULL);
280 g_datalist_clear (&scanner->qdata);
281 g_hash_table_foreach (scanner->symbol_table,
282 g_scanner_destroy_symbol_table_entry, NULL);
283 g_hash_table_destroy (scanner->symbol_table);
284 g_scanner_free_value (&scanner->token, &scanner->value);
285 g_scanner_free_value (&scanner->next_token, &scanner->next_value);
286 g_free (scanner->config);
287 g_free (scanner->buffer);
292 g_scanner_msg_handler (GScanner *scanner,
296 g_return_if_fail (scanner != NULL);
298 _g_fprintf (stderr, "%s:%d: ",
299 scanner->input_name ? scanner->input_name : "<memory>",
302 _g_fprintf (stderr, "error: ");
303 _g_fprintf (stderr, "%s\n", message);
307 g_scanner_error (GScanner *scanner,
311 g_return_if_fail (scanner != NULL);
312 g_return_if_fail (format != NULL);
314 scanner->parse_errors++;
316 if (scanner->msg_handler)
321 va_start (args, format);
322 string = g_strdup_vprintf (format, args);
325 scanner->msg_handler (scanner, string, TRUE);
332 g_scanner_warn (GScanner *scanner,
336 g_return_if_fail (scanner != NULL);
337 g_return_if_fail (format != NULL);
339 if (scanner->msg_handler)
344 va_start (args, format);
345 string = g_strdup_vprintf (format, args);
348 scanner->msg_handler (scanner, string, FALSE);
355 g_scanner_key_equal (gconstpointer v1,
358 const GScannerKey *key1 = v1;
359 const GScannerKey *key2 = v2;
361 return (key1->scope_id == key2->scope_id) && (strcmp (key1->symbol, key2->symbol) == 0);
365 g_scanner_key_hash (gconstpointer v)
367 const GScannerKey *key = v;
372 for (c = key->symbol; *c; c++)
373 h = (h << 5) - h + *c;
378 static inline GScannerKey*
379 g_scanner_lookup_internal (GScanner *scanner,
386 key.scope_id = scope_id;
388 if (!scanner->config->case_sensitive)
393 key.symbol = g_new (gchar, strlen (symbol) + 1);
394 for (d = key.symbol, c = symbol; *c; c++, d++)
397 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
402 key.symbol = (gchar*) symbol;
403 key_p = g_hash_table_lookup (scanner->symbol_table, &key);
410 g_scanner_scope_add_symbol (GScanner *scanner,
417 g_return_if_fail (scanner != NULL);
418 g_return_if_fail (symbol != NULL);
420 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
424 key = g_new (GScannerKey, 1);
425 key->scope_id = scope_id;
426 key->symbol = g_strdup (symbol);
428 if (!scanner->config->case_sensitive)
439 g_hash_table_insert (scanner->symbol_table, key, key);
446 g_scanner_scope_remove_symbol (GScanner *scanner,
452 g_return_if_fail (scanner != NULL);
453 g_return_if_fail (symbol != NULL);
455 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
459 g_hash_table_remove (scanner->symbol_table, key);
460 g_free (key->symbol);
466 g_scanner_lookup_symbol (GScanner *scanner,
472 g_return_val_if_fail (scanner != NULL, NULL);
477 scope_id = scanner->scope_id;
478 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
479 if (!key && scope_id && scanner->config->scope_0_fallback)
480 key = g_scanner_lookup_internal (scanner, 0, symbol);
489 g_scanner_scope_lookup_symbol (GScanner *scanner,
495 g_return_val_if_fail (scanner != NULL, NULL);
500 key = g_scanner_lookup_internal (scanner, scope_id, symbol);
509 g_scanner_set_scope (GScanner *scanner,
514 g_return_val_if_fail (scanner != NULL, 0);
516 old_scope_id = scanner->scope_id;
517 scanner->scope_id = scope_id;
523 g_scanner_foreach_internal (gpointer _key,
534 func = (GHFunc) d[0];
539 if (key->scope_id == *scope_id)
540 func (key->symbol, key->value, user_data);
544 g_scanner_scope_foreach_symbol (GScanner *scanner,
551 g_return_if_fail (scanner != NULL);
553 d[0] = (gpointer) func;
557 g_hash_table_foreach (scanner->symbol_table, g_scanner_foreach_internal, d);
561 g_scanner_peek_next_token (GScanner *scanner)
563 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
565 if (scanner->next_token == G_TOKEN_NONE)
567 scanner->next_line = scanner->line;
568 scanner->next_position = scanner->position;
569 g_scanner_get_token_i (scanner,
570 &scanner->next_token,
571 &scanner->next_value,
573 &scanner->next_position);
576 return scanner->next_token;
580 g_scanner_get_next_token (GScanner *scanner)
582 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
584 if (scanner->next_token != G_TOKEN_NONE)
586 g_scanner_free_value (&scanner->token, &scanner->value);
588 scanner->token = scanner->next_token;
589 scanner->value = scanner->next_value;
590 scanner->line = scanner->next_line;
591 scanner->position = scanner->next_position;
592 scanner->next_token = G_TOKEN_NONE;
595 g_scanner_get_token_i (scanner,
601 return scanner->token;
605 g_scanner_cur_token (GScanner *scanner)
607 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
609 return scanner->token;
613 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; ? */
629 g_scanner_cur_line (GScanner *scanner)
631 g_return_val_if_fail (scanner != NULL, 0);
633 return scanner->line;
637 g_scanner_cur_position (GScanner *scanner)
639 g_return_val_if_fail (scanner != NULL, 0);
641 return scanner->position;
645 g_scanner_eof (GScanner *scanner)
647 g_return_val_if_fail (scanner != NULL, TRUE);
649 return scanner->token == G_TOKEN_EOF || scanner->token == G_TOKEN_ERROR;
653 g_scanner_input_file (GScanner *scanner,
656 g_return_if_fail (scanner != NULL);
657 g_return_if_fail (input_fd >= 0);
659 if (scanner->input_fd >= 0)
660 g_scanner_sync_file_offset (scanner);
662 scanner->token = G_TOKEN_NONE;
663 scanner->value.v_int64 = 0;
665 scanner->position = 0;
666 scanner->next_token = G_TOKEN_NONE;
668 scanner->input_fd = input_fd;
669 scanner->text = NULL;
670 scanner->text_end = NULL;
672 if (!scanner->buffer)
673 scanner->buffer = g_new (gchar, READ_BUFFER_SIZE + 1);
677 g_scanner_input_text (GScanner *scanner,
681 g_return_if_fail (scanner != NULL);
683 g_return_if_fail (text != NULL);
687 if (scanner->input_fd >= 0)
688 g_scanner_sync_file_offset (scanner);
690 scanner->token = G_TOKEN_NONE;
691 scanner->value.v_int64 = 0;
693 scanner->position = 0;
694 scanner->next_token = G_TOKEN_NONE;
696 scanner->input_fd = -1;
697 scanner->text = text;
698 scanner->text_end = text + text_len;
702 g_free (scanner->buffer);
703 scanner->buffer = NULL;
708 g_scanner_peek_next_char (GScanner *scanner)
710 if (scanner->text < scanner->text_end)
712 return *scanner->text;
714 else if (scanner->input_fd >= 0)
719 buffer = scanner->buffer;
722 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
724 while (count == -1 && (errno == EINTR || errno == EAGAIN));
728 scanner->input_fd = -1;
734 scanner->text = buffer;
735 scanner->text_end = buffer + count;
745 g_scanner_sync_file_offset (GScanner *scanner)
747 g_return_if_fail (scanner != NULL);
749 /* for file input, rewind the filedescriptor to the current
750 * buffer position and blow the file read ahead buffer. useful
751 * for third party uses of our file descriptor, which hooks
752 * onto the current scanning position.
755 if (scanner->input_fd >= 0 && scanner->text_end > scanner->text)
759 buffered = scanner->text_end - scanner->text;
760 if (lseek (scanner->input_fd, - buffered, SEEK_CUR) >= 0)
762 /* we succeeded, blow our buffer's contents now */
763 scanner->text = NULL;
764 scanner->text_end = NULL;
772 g_scanner_get_char (GScanner *scanner,
778 if (scanner->text < scanner->text_end)
779 fchar = *(scanner->text++);
780 else if (scanner->input_fd >= 0)
785 buffer = scanner->buffer;
788 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
790 while (count == -1 && (errno == EINTR || errno == EAGAIN));
794 scanner->input_fd = -1;
799 scanner->text = buffer + 1;
800 scanner->text_end = buffer + count;
804 g_scanner_sync_file_offset (scanner);
805 scanner->text_end = scanner->text;
806 scanner->input_fd = -1;
827 g_scanner_unexp_token (GScanner *scanner,
828 GTokenType expected_token,
829 const gchar *identifier_spec,
830 const gchar *symbol_spec,
831 const gchar *symbol_name,
832 const gchar *message,
836 guint token_string_len;
837 gchar *expected_string;
838 guint expected_string_len;
839 gchar *message_prefix;
840 gboolean print_unexp;
841 void (*msg_handler) (GScanner*, const gchar*, ...);
843 g_return_if_fail (scanner != NULL);
846 msg_handler = g_scanner_error;
848 msg_handler = g_scanner_warn;
850 if (!identifier_spec)
851 identifier_spec = "identifier";
853 symbol_spec = "symbol";
855 token_string_len = 56;
856 token_string = g_new (gchar, token_string_len + 1);
857 expected_string_len = 64;
858 expected_string = g_new (gchar, expected_string_len + 1);
861 switch (scanner->token)
864 _g_snprintf (token_string, token_string_len, "end of file");
868 if (scanner->token >= 1 && scanner->token <= 255)
870 if ((scanner->token >= ' ' && scanner->token <= '~') ||
871 strchr (scanner->config->cset_identifier_first, scanner->token) ||
872 strchr (scanner->config->cset_identifier_nth, scanner->token))
873 _g_snprintf (token_string, token_string_len, "character `%c'", scanner->token);
875 _g_snprintf (token_string, token_string_len, "character `\\%o'", scanner->token);
878 else if (!scanner->config->symbol_2_token)
880 _g_snprintf (token_string, token_string_len, "(unknown) token <%d>", scanner->token);
885 if (expected_token == G_TOKEN_SYMBOL ||
886 (scanner->config->symbol_2_token &&
887 expected_token > G_TOKEN_LAST))
890 _g_snprintf (token_string,
893 print_unexp ? "" : "invalid ",
897 _g_snprintf (token_string,
900 print_unexp ? "" : "invalid ",
906 expected_token = G_TOKEN_NONE;
907 switch (scanner->value.v_error)
909 case G_ERR_UNEXP_EOF:
910 _g_snprintf (token_string, token_string_len, "scanner: unexpected end of file");
913 case G_ERR_UNEXP_EOF_IN_STRING:
914 _g_snprintf (token_string, token_string_len, "scanner: unterminated string constant");
917 case G_ERR_UNEXP_EOF_IN_COMMENT:
918 _g_snprintf (token_string, token_string_len, "scanner: unterminated comment");
921 case G_ERR_NON_DIGIT_IN_CONST:
922 _g_snprintf (token_string, token_string_len, "scanner: non digit in constant");
925 case G_ERR_FLOAT_RADIX:
926 _g_snprintf (token_string, token_string_len, "scanner: invalid radix for floating constant");
929 case G_ERR_FLOAT_MALFORMED:
930 _g_snprintf (token_string, token_string_len, "scanner: malformed floating constant");
933 case G_ERR_DIGIT_RADIX:
934 _g_snprintf (token_string, token_string_len, "scanner: digit is beyond radix");
939 _g_snprintf (token_string, token_string_len, "scanner: unknown error");
945 _g_snprintf (token_string, token_string_len, "character `%c'", scanner->value.v_char);
948 case G_TOKEN_IDENTIFIER:
949 case G_TOKEN_IDENTIFIER_NULL:
950 if (expected_token == G_TOKEN_IDENTIFIER ||
951 expected_token == G_TOKEN_IDENTIFIER_NULL)
953 _g_snprintf (token_string,
956 print_unexp ? "" : "invalid ",
958 scanner->token == G_TOKEN_IDENTIFIER ? scanner->value.v_string : "null");
965 if (scanner->config->store_int64)
966 _g_snprintf (token_string, token_string_len, "number `%" G_GUINT64_FORMAT "'", scanner->value.v_int64);
968 _g_snprintf (token_string, token_string_len, "number `%lu'", scanner->value.v_int);
972 _g_snprintf (token_string, token_string_len, "number `%.3f'", scanner->value.v_float);
976 if (expected_token == G_TOKEN_STRING)
978 _g_snprintf (token_string,
980 "%s%sstring constant \"%s\"",
981 print_unexp ? "" : "invalid ",
982 scanner->value.v_string[0] == 0 ? "empty " : "",
983 scanner->value.v_string);
984 token_string[token_string_len - 2] = '"';
985 token_string[token_string_len - 1] = 0;
988 case G_TOKEN_COMMENT_SINGLE:
989 case G_TOKEN_COMMENT_MULTI:
990 _g_snprintf (token_string, token_string_len, "comment");
994 /* somehow the user's parsing code is screwed, there isn't much
995 * we can do about it.
996 * Note, a common case to trigger this is
997 * g_scanner_peek_next_token(); g_scanner_unexp_token();
998 * without an intermediate g_scanner_get_next_token().
1000 g_assert_not_reached ();
1005 switch (expected_token)
1007 gboolean need_valid;
1010 _g_snprintf (expected_string, expected_string_len, "end of file");
1013 if (expected_token >= 1 && expected_token <= 255)
1015 if ((expected_token >= ' ' && expected_token <= '~') ||
1016 strchr (scanner->config->cset_identifier_first, expected_token) ||
1017 strchr (scanner->config->cset_identifier_nth, expected_token))
1018 _g_snprintf (expected_string, expected_string_len, "character `%c'", expected_token);
1020 _g_snprintf (expected_string, expected_string_len, "character `\\%o'", expected_token);
1023 else if (!scanner->config->symbol_2_token)
1025 _g_snprintf (expected_string, expected_string_len, "(unknown) token <%d>", expected_token);
1029 case G_TOKEN_SYMBOL:
1030 need_valid = (scanner->token == G_TOKEN_SYMBOL ||
1031 (scanner->config->symbol_2_token &&
1032 scanner->token > G_TOKEN_LAST));
1033 _g_snprintf (expected_string,
1034 expected_string_len,
1036 need_valid ? "valid " : "",
1038 /* FIXME: should we attempt to lookup the symbol_name for symbol_2_token? */
1041 _g_snprintf (expected_string, expected_string_len, "%scharacter",
1042 scanner->token == G_TOKEN_CHAR ? "valid " : "");
1044 case G_TOKEN_BINARY:
1046 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1047 scanner->token == expected_token ? "valid " : "", tstring);
1051 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1052 scanner->token == expected_token ? "valid " : "", tstring);
1055 tstring = "integer";
1056 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1057 scanner->token == expected_token ? "valid " : "", tstring);
1060 tstring = "hexadecimal";
1061 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1062 scanner->token == expected_token ? "valid " : "", tstring);
1066 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1067 scanner->token == expected_token ? "valid " : "", tstring);
1069 case G_TOKEN_STRING:
1070 _g_snprintf (expected_string,
1071 expected_string_len,
1072 "%sstring constant",
1073 scanner->token == G_TOKEN_STRING ? "valid " : "");
1075 case G_TOKEN_IDENTIFIER:
1076 case G_TOKEN_IDENTIFIER_NULL:
1077 need_valid = (scanner->token == G_TOKEN_IDENTIFIER_NULL ||
1078 scanner->token == G_TOKEN_IDENTIFIER);
1079 _g_snprintf (expected_string,
1080 expected_string_len,
1082 need_valid ? "valid " : "",
1085 case G_TOKEN_COMMENT_SINGLE:
1086 tstring = "single-line";
1087 _g_snprintf (expected_string, expected_string_len, "%scomment (%s)",
1088 scanner->token == expected_token ? "valid " : "", tstring);
1090 case G_TOKEN_COMMENT_MULTI:
1091 tstring = "multi-line";
1092 _g_snprintf (expected_string, expected_string_len, "%scomment (%s)",
1093 scanner->token == expected_token ? "valid " : "", tstring);
1097 /* this is handled upon printout */
1101 if (message && message[0] != 0)
1102 message_prefix = " - ";
1105 message_prefix = "";
1108 if (expected_token == G_TOKEN_ERROR)
1110 msg_handler (scanner,
1111 "failure around %s%s%s",
1116 else if (expected_token == G_TOKEN_NONE)
1119 msg_handler (scanner,
1120 "unexpected %s%s%s",
1125 msg_handler (scanner,
1134 msg_handler (scanner,
1135 "unexpected %s, expected %s%s%s",
1141 msg_handler (scanner,
1142 "%s, expected %s%s%s",
1149 g_free (token_string);
1150 g_free (expected_string);
1154 g_scanner_get_token_i (GScanner *scanner,
1155 GTokenType *token_p,
1156 GTokenValue *value_p,
1162 g_scanner_free_value (token_p, value_p);
1163 g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
1165 while (((*token_p > 0 && *token_p < 256) &&
1166 strchr (scanner->config->cset_skip_characters, *token_p)) ||
1167 (*token_p == G_TOKEN_CHAR &&
1168 strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
1169 (*token_p == G_TOKEN_COMMENT_MULTI &&
1170 scanner->config->skip_comment_multi) ||
1171 (*token_p == G_TOKEN_COMMENT_SINGLE &&
1172 scanner->config->skip_comment_single));
1176 case G_TOKEN_IDENTIFIER:
1177 if (scanner->config->identifier_2_string)
1178 *token_p = G_TOKEN_STRING;
1181 case G_TOKEN_SYMBOL:
1182 if (scanner->config->symbol_2_token)
1183 *token_p = (GTokenType) value_p->v_symbol;
1186 case G_TOKEN_BINARY:
1189 if (scanner->config->numbers_2_int)
1190 *token_p = G_TOKEN_INT;
1197 if (*token_p == G_TOKEN_INT &&
1198 scanner->config->int_2_float)
1200 *token_p = G_TOKEN_FLOAT;
1201 if (scanner->config->store_int64)
1204 /* work around error C2520, see gvaluetransform.c */
1205 value_p->v_float = (__int64)value_p->v_int64;
1207 value_p->v_float = value_p->v_int64;
1211 value_p->v_float = value_p->v_int;
1218 g_scanner_get_token_ll (GScanner *scanner,
1219 GTokenType *token_p,
1220 GTokenValue *value_p,
1224 GScannerConfig *config;
1226 gboolean in_comment_multi;
1227 gboolean in_comment_single;
1228 gboolean in_string_sq;
1229 gboolean in_string_dq;
1234 config = scanner->config;
1235 (*value_p).v_int64 = 0;
1237 if ((scanner->text >= scanner->text_end && scanner->input_fd < 0) ||
1238 scanner->token == G_TOKEN_EOF)
1240 *token_p = G_TOKEN_EOF;
1244 in_comment_multi = FALSE;
1245 in_comment_single = FALSE;
1246 in_string_sq = FALSE;
1247 in_string_dq = FALSE;
1250 do /* while (ch != 0) */
1252 gboolean dotted_float = FALSE;
1254 ch = g_scanner_get_char (scanner, line_p, position_p);
1257 token = G_TOKEN_NONE;
1259 /* this is *evil*, but needed ;(
1260 * we first check for identifier first character, because it
1261 * might interfere with other key chars like slashes or numbers
1263 if (config->scan_identifier &&
1264 ch && strchr (config->cset_identifier_first, ch))
1265 goto identifier_precedence;
1270 token = G_TOKEN_EOF;
1276 if (!config->scan_comment_multi ||
1277 g_scanner_peek_next_char (scanner) != '*')
1279 g_scanner_get_char (scanner, line_p, position_p);
1280 token = G_TOKEN_COMMENT_MULTI;
1281 in_comment_multi = TRUE;
1282 gstring = g_string_new (NULL);
1283 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1285 if (ch == '*' && g_scanner_peek_next_char (scanner) == '/')
1287 g_scanner_get_char (scanner, line_p, position_p);
1288 in_comment_multi = FALSE;
1292 gstring = g_string_append_c (gstring, ch);
1298 if (!config->scan_string_sq)
1300 token = G_TOKEN_STRING;
1301 in_string_sq = TRUE;
1302 gstring = g_string_new (NULL);
1303 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1307 in_string_sq = FALSE;
1311 gstring = g_string_append_c (gstring, ch);
1317 if (!config->scan_string_dq)
1319 token = G_TOKEN_STRING;
1320 in_string_dq = TRUE;
1321 gstring = g_string_new (NULL);
1322 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1326 in_string_dq = FALSE;
1333 ch = g_scanner_get_char (scanner, line_p, position_p);
1343 gstring = g_string_append_c (gstring, '\\');
1347 gstring = g_string_append_c (gstring, '\n');
1351 gstring = g_string_append_c (gstring, '\t');
1355 gstring = g_string_append_c (gstring, '\r');
1359 gstring = g_string_append_c (gstring, '\b');
1363 gstring = g_string_append_c (gstring, '\f');
1375 fchar = g_scanner_peek_next_char (scanner);
1376 if (fchar >= '0' && fchar <= '7')
1378 ch = g_scanner_get_char (scanner, line_p, position_p);
1379 i = i * 8 + ch - '0';
1380 fchar = g_scanner_peek_next_char (scanner);
1381 if (fchar >= '0' && fchar <= '7')
1383 ch = g_scanner_get_char (scanner, line_p, position_p);
1384 i = i * 8 + ch - '0';
1387 gstring = g_string_append_c (gstring, i);
1391 gstring = g_string_append_c (gstring, ch);
1396 gstring = g_string_append_c (gstring, ch);
1403 if (!config->scan_float)
1405 token = G_TOKEN_FLOAT;
1406 dotted_float = TRUE;
1407 ch = g_scanner_get_char (scanner, line_p, position_p);
1408 goto number_parsing;
1411 if (!config->scan_hex_dollar)
1413 token = G_TOKEN_HEX;
1414 ch = g_scanner_get_char (scanner, line_p, position_p);
1415 goto number_parsing;
1418 if (config->scan_octal)
1419 token = G_TOKEN_OCTAL;
1421 token = G_TOKEN_INT;
1422 ch = g_scanner_peek_next_char (scanner);
1423 if (config->scan_hex && (ch == 'x' || ch == 'X'))
1425 token = G_TOKEN_HEX;
1426 g_scanner_get_char (scanner, line_p, position_p);
1427 ch = g_scanner_get_char (scanner, line_p, position_p);
1430 token = G_TOKEN_ERROR;
1431 value.v_error = G_ERR_UNEXP_EOF;
1435 if (g_scanner_char_2_num (ch, 16) < 0)
1437 token = G_TOKEN_ERROR;
1438 value.v_error = G_ERR_DIGIT_RADIX;
1443 else if (config->scan_binary && (ch == 'b' || ch == 'B'))
1445 token = G_TOKEN_BINARY;
1446 g_scanner_get_char (scanner, line_p, position_p);
1447 ch = g_scanner_get_char (scanner, line_p, position_p);
1450 token = G_TOKEN_ERROR;
1451 value.v_error = G_ERR_UNEXP_EOF;
1455 if (g_scanner_char_2_num (ch, 10) < 0)
1457 token = G_TOKEN_ERROR;
1458 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1477 gboolean in_number = TRUE;
1480 if (token == G_TOKEN_NONE)
1481 token = G_TOKEN_INT;
1483 gstring = g_string_new (dotted_float ? "0." : "");
1484 gstring = g_string_append_c (gstring, ch);
1486 do /* while (in_number) */
1490 is_E = token == G_TOKEN_FLOAT && (ch == 'e' || ch == 'E');
1492 ch = g_scanner_peek_next_char (scanner);
1494 if (g_scanner_char_2_num (ch, 36) >= 0 ||
1495 (config->scan_float && ch == '.') ||
1496 (is_E && (ch == '+' || ch == '-')))
1498 ch = g_scanner_get_char (scanner, line_p, position_p);
1503 if (token != G_TOKEN_INT && token != G_TOKEN_OCTAL)
1505 value.v_error = token == G_TOKEN_FLOAT ? G_ERR_FLOAT_MALFORMED : G_ERR_FLOAT_RADIX;
1506 token = G_TOKEN_ERROR;
1511 token = G_TOKEN_FLOAT;
1512 gstring = g_string_append_c (gstring, ch);
1526 gstring = g_string_append_c (gstring, ch);
1531 if (token != G_TOKEN_FLOAT)
1533 token = G_TOKEN_ERROR;
1534 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1538 gstring = g_string_append_c (gstring, ch);
1543 if ((token != G_TOKEN_HEX && !config->scan_float) ||
1544 (token != G_TOKEN_HEX &&
1545 token != G_TOKEN_OCTAL &&
1546 token != G_TOKEN_FLOAT &&
1547 token != G_TOKEN_INT))
1549 token = G_TOKEN_ERROR;
1550 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1555 if (token != G_TOKEN_HEX)
1556 token = G_TOKEN_FLOAT;
1557 gstring = g_string_append_c (gstring, ch);
1562 if (token != G_TOKEN_HEX)
1564 token = G_TOKEN_ERROR;
1565 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1569 gstring = g_string_append_c (gstring, ch);
1579 if (token == G_TOKEN_FLOAT)
1580 value.v_float = g_strtod (gstring->str, &endptr);
1586 case G_TOKEN_BINARY:
1587 ui64 = g_ascii_strtoull (gstring->str, &endptr, 2);
1590 ui64 = g_ascii_strtoull (gstring->str, &endptr, 8);
1593 ui64 = g_ascii_strtoull (gstring->str, &endptr, 10);
1596 ui64 = g_ascii_strtoull (gstring->str, &endptr, 16);
1600 if (scanner->config->store_int64)
1601 value.v_int64 = ui64;
1605 if (endptr && *endptr)
1607 token = G_TOKEN_ERROR;
1608 if (*endptr == 'e' || *endptr == 'E')
1609 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1611 value.v_error = G_ERR_DIGIT_RADIX;
1613 g_string_free (gstring, TRUE);
1616 } /* number_parsing:... */
1622 if (config->cpair_comment_single &&
1623 ch == config->cpair_comment_single[0])
1625 token = G_TOKEN_COMMENT_SINGLE;
1626 in_comment_single = TRUE;
1627 gstring = g_string_new (NULL);
1628 ch = g_scanner_get_char (scanner, line_p, position_p);
1631 if (ch == config->cpair_comment_single[1])
1633 in_comment_single = FALSE;
1638 gstring = g_string_append_c (gstring, ch);
1639 ch = g_scanner_get_char (scanner, line_p, position_p);
1641 /* ignore a missing newline at EOF for single line comments */
1642 if (in_comment_single &&
1643 config->cpair_comment_single[1] == '\n')
1644 in_comment_single = FALSE;
1646 else if (config->scan_identifier && ch &&
1647 strchr (config->cset_identifier_first, ch))
1649 identifier_precedence:
1651 if (config->cset_identifier_nth && ch &&
1652 strchr (config->cset_identifier_nth,
1653 g_scanner_peek_next_char (scanner)))
1655 token = G_TOKEN_IDENTIFIER;
1656 gstring = g_string_new (NULL);
1657 gstring = g_string_append_c (gstring, ch);
1660 ch = g_scanner_get_char (scanner, line_p, position_p);
1661 gstring = g_string_append_c (gstring, ch);
1662 ch = g_scanner_peek_next_char (scanner);
1664 while (ch && strchr (config->cset_identifier_nth, ch));
1667 else if (config->scan_identifier_1char)
1669 token = G_TOKEN_IDENTIFIER;
1670 value.v_identifier = g_new0 (gchar, 2);
1671 value.v_identifier[0] = ch;
1677 if (config->char_2_token)
1681 token = G_TOKEN_CHAR;
1686 } /* default_case:... */
1689 g_assert (ch == 0 && token != G_TOKEN_NONE); /* paranoid */
1693 if (in_comment_multi || in_comment_single ||
1694 in_string_sq || in_string_dq)
1696 token = G_TOKEN_ERROR;
1699 g_string_free (gstring, TRUE);
1703 if (in_comment_multi || in_comment_single)
1704 value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
1705 else /* (in_string_sq || in_string_dq) */
1706 value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
1711 value.v_string = g_string_free (gstring, FALSE);
1715 if (token == G_TOKEN_IDENTIFIER)
1717 if (config->scan_symbols)
1722 scope_id = scanner->scope_id;
1723 key = g_scanner_lookup_internal (scanner, scope_id, value.v_identifier);
1724 if (!key && scope_id && scanner->config->scope_0_fallback)
1725 key = g_scanner_lookup_internal (scanner, 0, value.v_identifier);
1729 g_free (value.v_identifier);
1730 token = G_TOKEN_SYMBOL;
1731 value.v_symbol = key->value;
1735 if (token == G_TOKEN_IDENTIFIER &&
1736 config->scan_identifier_NULL &&
1737 strlen (value.v_identifier) == 4)
1739 gchar *null_upper = "NULL";
1740 gchar *null_lower = "null";
1742 if (scanner->config->case_sensitive)
1744 if (value.v_identifier[0] == null_upper[0] &&
1745 value.v_identifier[1] == null_upper[1] &&
1746 value.v_identifier[2] == null_upper[2] &&
1747 value.v_identifier[3] == null_upper[3])
1748 token = G_TOKEN_IDENTIFIER_NULL;
1752 if ((value.v_identifier[0] == null_upper[0] ||
1753 value.v_identifier[0] == null_lower[0]) &&
1754 (value.v_identifier[1] == null_upper[1] ||
1755 value.v_identifier[1] == null_lower[1]) &&
1756 (value.v_identifier[2] == null_upper[2] ||
1757 value.v_identifier[2] == null_lower[2]) &&
1758 (value.v_identifier[3] == null_upper[3] ||
1759 value.v_identifier[3] == null_lower[3]))
1760 token = G_TOKEN_IDENTIFIER_NULL;