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/.
45 #include <io.h> /* For _read() */
49 #include "gprintfint.h"
52 #define to_lower(c) ( \
54 ( (((guchar)(c))>='A' && ((guchar)(c))<='Z') * ('a'-'A') ) | \
55 ( (((guchar)(c))>=192 && ((guchar)(c))<=214) * (224-192) ) | \
56 ( (((guchar)(c))>=216 && ((guchar)(c))<=222) * (248-216) ) | \
60 #define READ_BUFFER_SIZE (4000)
63 /* --- typedefs --- */
64 typedef struct _GScannerKey GScannerKey;
74 /* --- variables --- */
75 static GScannerConfig g_scanner_config_template =
79 ) /* cset_skip_characters */,
84 ) /* cset_identifier_first */,
92 ) /* cset_identifier_nth */,
93 ( "#\n" ) /* cpair_comment_single */,
95 FALSE /* case_sensitive */,
97 TRUE /* skip_comment_multi */,
98 TRUE /* skip_comment_single */,
99 TRUE /* scan_comment_multi */,
100 TRUE /* scan_identifier */,
101 FALSE /* scan_identifier_1char */,
102 FALSE /* scan_identifier_NULL */,
103 TRUE /* scan_symbols */,
104 FALSE /* scan_binary */,
105 TRUE /* scan_octal */,
106 TRUE /* scan_float */,
108 FALSE /* scan_hex_dollar */,
109 TRUE /* scan_string_sq */,
110 TRUE /* scan_string_dq */,
111 TRUE /* numbers_2_int */,
112 FALSE /* int_2_float */,
113 FALSE /* identifier_2_string */,
114 TRUE /* char_2_token */,
115 FALSE /* symbol_2_token */,
116 FALSE /* scope_0_fallback */,
117 FALSE /* store_int64 */,
121 /* --- prototypes --- */
123 GScannerKey* g_scanner_lookup_internal (GScanner *scanner,
125 const gchar *symbol);
126 static gboolean g_scanner_key_equal (gconstpointer v1,
128 static guint g_scanner_key_hash (gconstpointer v);
129 static void g_scanner_get_token_ll (GScanner *scanner,
131 GTokenValue *value_p,
134 static void g_scanner_get_token_i (GScanner *scanner,
136 GTokenValue *value_p,
140 static guchar g_scanner_peek_next_char (GScanner *scanner);
141 static guchar g_scanner_get_char (GScanner *scanner,
144 static void g_scanner_msg_handler (GScanner *scanner,
149 /* --- functions --- */
151 g_scanner_char_2_num (guchar c,
154 if (c >= '0' && c <= '9')
156 else if (c >= 'A' && c <= 'Z')
158 else if (c >= 'a' && c <= 'z')
170 g_scanner_new (const GScannerConfig *config_templ)
175 config_templ = &g_scanner_config_template;
177 scanner = g_new0 (GScanner, 1);
179 scanner->user_data = NULL;
180 scanner->max_parse_errors = 1;
181 scanner->parse_errors = 0;
182 scanner->input_name = NULL;
183 g_datalist_init (&scanner->qdata);
185 scanner->config = g_new0 (GScannerConfig, 1);
187 scanner->config->case_sensitive = config_templ->case_sensitive;
188 scanner->config->cset_skip_characters = config_templ->cset_skip_characters;
189 if (!scanner->config->cset_skip_characters)
190 scanner->config->cset_skip_characters = "";
191 scanner->config->cset_identifier_first = config_templ->cset_identifier_first;
192 scanner->config->cset_identifier_nth = config_templ->cset_identifier_nth;
193 scanner->config->cpair_comment_single = config_templ->cpair_comment_single;
194 scanner->config->skip_comment_multi = config_templ->skip_comment_multi;
195 scanner->config->skip_comment_single = config_templ->skip_comment_single;
196 scanner->config->scan_comment_multi = config_templ->scan_comment_multi;
197 scanner->config->scan_identifier = config_templ->scan_identifier;
198 scanner->config->scan_identifier_1char = config_templ->scan_identifier_1char;
199 scanner->config->scan_identifier_NULL = config_templ->scan_identifier_NULL;
200 scanner->config->scan_symbols = config_templ->scan_symbols;
201 scanner->config->scan_binary = config_templ->scan_binary;
202 scanner->config->scan_octal = config_templ->scan_octal;
203 scanner->config->scan_float = config_templ->scan_float;
204 scanner->config->scan_hex = config_templ->scan_hex;
205 scanner->config->scan_hex_dollar = config_templ->scan_hex_dollar;
206 scanner->config->scan_string_sq = config_templ->scan_string_sq;
207 scanner->config->scan_string_dq = config_templ->scan_string_dq;
208 scanner->config->numbers_2_int = config_templ->numbers_2_int;
209 scanner->config->int_2_float = config_templ->int_2_float;
210 scanner->config->identifier_2_string = config_templ->identifier_2_string;
211 scanner->config->char_2_token = config_templ->char_2_token;
212 scanner->config->symbol_2_token = config_templ->symbol_2_token;
213 scanner->config->scope_0_fallback = config_templ->scope_0_fallback;
214 scanner->config->store_int64 = config_templ->store_int64;
216 scanner->token = G_TOKEN_NONE;
217 scanner->value.v_int64 = 0;
219 scanner->position = 0;
221 scanner->next_token = G_TOKEN_NONE;
222 scanner->next_value.v_int64 = 0;
223 scanner->next_line = 1;
224 scanner->next_position = 0;
226 scanner->symbol_table = g_hash_table_new (g_scanner_key_hash, g_scanner_key_equal);
227 scanner->input_fd = -1;
228 scanner->text = NULL;
229 scanner->text_end = NULL;
230 scanner->buffer = NULL;
231 scanner->scope_id = 0;
233 scanner->msg_handler = g_scanner_msg_handler;
239 g_scanner_free_value (GTokenType *token_p,
240 GTokenValue *value_p)
245 case G_TOKEN_IDENTIFIER:
246 case G_TOKEN_IDENTIFIER_NULL:
247 case G_TOKEN_COMMENT_SINGLE:
248 case G_TOKEN_COMMENT_MULTI:
249 g_free (value_p->v_string);
256 *token_p = G_TOKEN_NONE;
260 g_scanner_destroy_symbol_table_entry (gpointer _key,
264 GScannerKey *key = _key;
266 g_free (key->symbol);
271 g_scanner_destroy (GScanner *scanner)
273 g_return_if_fail (scanner != NULL);
275 g_datalist_clear (&scanner->qdata);
276 g_hash_table_foreach (scanner->symbol_table,
277 g_scanner_destroy_symbol_table_entry, NULL);
278 g_hash_table_destroy (scanner->symbol_table);
279 g_scanner_free_value (&scanner->token, &scanner->value);
280 g_scanner_free_value (&scanner->next_token, &scanner->next_value);
281 g_free (scanner->config);
282 g_free (scanner->buffer);
287 g_scanner_msg_handler (GScanner *scanner,
291 g_return_if_fail (scanner != NULL);
293 _g_fprintf (stderr, "%s:%d: ",
294 scanner->input_name ? scanner->input_name : "<memory>",
297 _g_fprintf (stderr, "error: ");
298 _g_fprintf (stderr, "%s\n", message);
302 g_scanner_error (GScanner *scanner,
306 g_return_if_fail (scanner != NULL);
307 g_return_if_fail (format != NULL);
309 scanner->parse_errors++;
311 if (scanner->msg_handler)
316 va_start (args, format);
317 string = g_strdup_vprintf (format, args);
320 scanner->msg_handler (scanner, string, TRUE);
327 g_scanner_warn (GScanner *scanner,
331 g_return_if_fail (scanner != NULL);
332 g_return_if_fail (format != NULL);
334 if (scanner->msg_handler)
339 va_start (args, format);
340 string = g_strdup_vprintf (format, args);
343 scanner->msg_handler (scanner, string, FALSE);
350 g_scanner_key_equal (gconstpointer v1,
353 const GScannerKey *key1 = v1;
354 const GScannerKey *key2 = v2;
356 return (key1->scope_id == key2->scope_id) && (strcmp (key1->symbol, key2->symbol) == 0);
360 g_scanner_key_hash (gconstpointer v)
362 const GScannerKey *key = v;
367 for (c = key->symbol; *c; c++)
368 h = (h << 5) - h + *c;
373 static inline GScannerKey*
374 g_scanner_lookup_internal (GScanner *scanner,
381 key.scope_id = scope_id;
383 if (!scanner->config->case_sensitive)
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,
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,
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,
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,
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,
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,
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_peek_next_token (GScanner *scanner)
558 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
560 if (scanner->next_token == G_TOKEN_NONE)
562 scanner->next_line = scanner->line;
563 scanner->next_position = scanner->position;
564 g_scanner_get_token_i (scanner,
565 &scanner->next_token,
566 &scanner->next_value,
568 &scanner->next_position);
571 return scanner->next_token;
575 g_scanner_get_next_token (GScanner *scanner)
577 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
579 if (scanner->next_token != G_TOKEN_NONE)
581 g_scanner_free_value (&scanner->token, &scanner->value);
583 scanner->token = scanner->next_token;
584 scanner->value = scanner->next_value;
585 scanner->line = scanner->next_line;
586 scanner->position = scanner->next_position;
587 scanner->next_token = G_TOKEN_NONE;
590 g_scanner_get_token_i (scanner,
596 return scanner->token;
600 g_scanner_cur_token (GScanner *scanner)
602 g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
604 return scanner->token;
608 g_scanner_cur_value (GScanner *scanner)
614 g_return_val_if_fail (scanner != NULL, v);
616 /* MSC isn't capable of handling return scanner->value; ? */
624 g_scanner_cur_line (GScanner *scanner)
626 g_return_val_if_fail (scanner != NULL, 0);
628 return scanner->line;
632 g_scanner_cur_position (GScanner *scanner)
634 g_return_val_if_fail (scanner != NULL, 0);
636 return scanner->position;
640 g_scanner_eof (GScanner *scanner)
642 g_return_val_if_fail (scanner != NULL, TRUE);
644 return scanner->token == G_TOKEN_EOF || scanner->token == G_TOKEN_ERROR;
648 g_scanner_input_file (GScanner *scanner,
651 g_return_if_fail (scanner != NULL);
652 g_return_if_fail (input_fd >= 0);
654 if (scanner->input_fd >= 0)
655 g_scanner_sync_file_offset (scanner);
657 scanner->token = G_TOKEN_NONE;
658 scanner->value.v_int64 = 0;
660 scanner->position = 0;
661 scanner->next_token = G_TOKEN_NONE;
663 scanner->input_fd = input_fd;
664 scanner->text = NULL;
665 scanner->text_end = NULL;
667 if (!scanner->buffer)
668 scanner->buffer = g_new (gchar, READ_BUFFER_SIZE + 1);
672 g_scanner_input_text (GScanner *scanner,
676 g_return_if_fail (scanner != NULL);
678 g_return_if_fail (text != NULL);
682 if (scanner->input_fd >= 0)
683 g_scanner_sync_file_offset (scanner);
685 scanner->token = G_TOKEN_NONE;
686 scanner->value.v_int64 = 0;
688 scanner->position = 0;
689 scanner->next_token = G_TOKEN_NONE;
691 scanner->input_fd = -1;
692 scanner->text = text;
693 scanner->text_end = text + text_len;
697 g_free (scanner->buffer);
698 scanner->buffer = NULL;
703 g_scanner_peek_next_char (GScanner *scanner)
705 if (scanner->text < scanner->text_end)
707 return *scanner->text;
709 else if (scanner->input_fd >= 0)
714 buffer = scanner->buffer;
717 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
719 while (count == -1 && (errno == EINTR || errno == EAGAIN));
723 scanner->input_fd = -1;
729 scanner->text = buffer;
730 scanner->text_end = buffer + count;
740 g_scanner_sync_file_offset (GScanner *scanner)
742 g_return_if_fail (scanner != NULL);
744 /* for file input, rewind the filedescriptor to the current
745 * buffer position and blow the file read ahead buffer. usefull for
746 * third party uses of our filedescriptor, which hooks onto the current
750 if (scanner->input_fd >= 0 && scanner->text_end > scanner->text)
754 buffered = scanner->text_end - scanner->text;
755 if (lseek (scanner->input_fd, - buffered, SEEK_CUR) >= 0)
757 /* we succeeded, blow our buffer's contents now */
758 scanner->text = NULL;
759 scanner->text_end = NULL;
767 g_scanner_get_char (GScanner *scanner,
773 if (scanner->text < scanner->text_end)
774 fchar = *(scanner->text++);
775 else if (scanner->input_fd >= 0)
780 buffer = scanner->buffer;
783 count = read (scanner->input_fd, buffer, READ_BUFFER_SIZE);
785 while (count == -1 && (errno == EINTR || errno == EAGAIN));
789 scanner->input_fd = -1;
794 scanner->text = buffer + 1;
795 scanner->text_end = buffer + count;
799 g_scanner_sync_file_offset (scanner);
800 scanner->text_end = scanner->text;
801 scanner->input_fd = -1;
822 g_scanner_unexp_token (GScanner *scanner,
823 GTokenType expected_token,
824 const gchar *identifier_spec,
825 const gchar *symbol_spec,
826 const gchar *symbol_name,
827 const gchar *message,
831 guint token_string_len;
832 gchar *expected_string;
833 guint expected_string_len;
834 gchar *message_prefix;
835 gboolean print_unexp;
836 void (*msg_handler) (GScanner*, const gchar*, ...);
838 g_return_if_fail (scanner != NULL);
841 msg_handler = g_scanner_error;
843 msg_handler = g_scanner_warn;
845 if (!identifier_spec)
846 identifier_spec = "identifier";
848 symbol_spec = "symbol";
850 token_string_len = 56;
851 token_string = g_new (gchar, token_string_len + 1);
852 expected_string_len = 64;
853 expected_string = g_new (gchar, expected_string_len + 1);
856 switch (scanner->token)
859 _g_snprintf (token_string, token_string_len, "end of file");
863 if (scanner->token >= 1 && scanner->token <= 255)
865 if ((scanner->token >= ' ' && scanner->token <= '~') ||
866 strchr (scanner->config->cset_identifier_first, scanner->token) ||
867 strchr (scanner->config->cset_identifier_nth, scanner->token))
868 _g_snprintf (token_string, token_string_len, "character `%c'", scanner->token);
870 _g_snprintf (token_string, token_string_len, "character `\\%o'", scanner->token);
873 else if (!scanner->config->symbol_2_token)
875 _g_snprintf (token_string, token_string_len, "(unknown) token <%d>", scanner->token);
880 if (expected_token == G_TOKEN_SYMBOL ||
881 (scanner->config->symbol_2_token &&
882 expected_token > G_TOKEN_LAST))
885 _g_snprintf (token_string,
888 print_unexp ? "" : "invalid ",
892 _g_snprintf (token_string,
895 print_unexp ? "" : "invalid ",
901 expected_token = G_TOKEN_NONE;
902 switch (scanner->value.v_error)
904 case G_ERR_UNEXP_EOF:
905 _g_snprintf (token_string, token_string_len, "scanner: unexpected end of file");
908 case G_ERR_UNEXP_EOF_IN_STRING:
909 _g_snprintf (token_string, token_string_len, "scanner: unterminated string constant");
912 case G_ERR_UNEXP_EOF_IN_COMMENT:
913 _g_snprintf (token_string, token_string_len, "scanner: unterminated comment");
916 case G_ERR_NON_DIGIT_IN_CONST:
917 _g_snprintf (token_string, token_string_len, "scanner: non digit in constant");
920 case G_ERR_FLOAT_RADIX:
921 _g_snprintf (token_string, token_string_len, "scanner: invalid radix for floating constant");
924 case G_ERR_FLOAT_MALFORMED:
925 _g_snprintf (token_string, token_string_len, "scanner: malformed floating constant");
928 case G_ERR_DIGIT_RADIX:
929 _g_snprintf (token_string, token_string_len, "scanner: digit is beyond radix");
934 _g_snprintf (token_string, token_string_len, "scanner: unknown error");
940 _g_snprintf (token_string, token_string_len, "character `%c'", scanner->value.v_char);
943 case G_TOKEN_IDENTIFIER:
944 case G_TOKEN_IDENTIFIER_NULL:
945 if (expected_token == G_TOKEN_IDENTIFIER ||
946 expected_token == G_TOKEN_IDENTIFIER_NULL)
948 _g_snprintf (token_string,
951 print_unexp ? "" : "invalid ",
953 scanner->token == G_TOKEN_IDENTIFIER ? scanner->value.v_string : "null");
960 if (scanner->config->store_int64)
961 _g_snprintf (token_string, token_string_len, "number `" G_GUINT64_FORMAT "'", scanner->value.v_int64);
963 _g_snprintf (token_string, token_string_len, "number `%lu'", scanner->value.v_int);
967 _g_snprintf (token_string, token_string_len, "number `%.3f'", scanner->value.v_float);
971 if (expected_token == G_TOKEN_STRING)
973 _g_snprintf (token_string,
975 "%s%sstring constant \"%s\"",
976 print_unexp ? "" : "invalid ",
977 scanner->value.v_string[0] == 0 ? "empty " : "",
978 scanner->value.v_string);
979 token_string[token_string_len - 2] = '"';
980 token_string[token_string_len - 1] = 0;
983 case G_TOKEN_COMMENT_SINGLE:
984 case G_TOKEN_COMMENT_MULTI:
985 _g_snprintf (token_string, token_string_len, "comment");
989 /* somehow the user's parsing code is screwed, there isn't much
990 * we can do about it.
991 * Note, a common case to trigger this is
992 * g_scanner_peek_next_token(); g_scanner_unexp_token();
993 * without an intermediate g_scanner_get_next_token().
995 g_assert_not_reached ();
1000 switch (expected_token)
1002 gboolean need_valid;
1005 _g_snprintf (expected_string, expected_string_len, "end of file");
1008 if (expected_token >= 1 && expected_token <= 255)
1010 if ((expected_token >= ' ' && expected_token <= '~') ||
1011 strchr (scanner->config->cset_identifier_first, expected_token) ||
1012 strchr (scanner->config->cset_identifier_nth, expected_token))
1013 _g_snprintf (expected_string, expected_string_len, "character `%c'", expected_token);
1015 _g_snprintf (expected_string, expected_string_len, "character `\\%o'", expected_token);
1018 else if (!scanner->config->symbol_2_token)
1020 _g_snprintf (expected_string, expected_string_len, "(unknown) token <%d>", expected_token);
1024 case G_TOKEN_SYMBOL:
1025 need_valid = (scanner->token == G_TOKEN_SYMBOL ||
1026 (scanner->config->symbol_2_token &&
1027 scanner->token > G_TOKEN_LAST));
1028 _g_snprintf (expected_string,
1029 expected_string_len,
1031 need_valid ? "valid " : "",
1033 /* FIXME: should we attempt to lookup the symbol_name for symbol_2_token? */
1036 _g_snprintf (expected_string, expected_string_len, "%scharacter",
1037 scanner->token == G_TOKEN_CHAR ? "valid " : "");
1039 case G_TOKEN_BINARY:
1041 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1042 scanner->token == expected_token ? "valid " : "", tstring);
1046 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1047 scanner->token == expected_token ? "valid " : "", tstring);
1050 tstring = "integer";
1051 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1052 scanner->token == expected_token ? "valid " : "", tstring);
1055 tstring = "hexadecimal";
1056 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1057 scanner->token == expected_token ? "valid " : "", tstring);
1061 _g_snprintf (expected_string, expected_string_len, "%snumber (%s)",
1062 scanner->token == expected_token ? "valid " : "", tstring);
1064 case G_TOKEN_STRING:
1065 _g_snprintf (expected_string,
1066 expected_string_len,
1067 "%sstring constant",
1068 scanner->token == G_TOKEN_STRING ? "valid " : "");
1070 case G_TOKEN_IDENTIFIER:
1071 case G_TOKEN_IDENTIFIER_NULL:
1072 need_valid = (scanner->token == G_TOKEN_IDENTIFIER_NULL ||
1073 scanner->token == G_TOKEN_IDENTIFIER);
1074 _g_snprintf (expected_string,
1075 expected_string_len,
1077 need_valid ? "valid " : "",
1080 case G_TOKEN_COMMENT_SINGLE:
1081 tstring = "single-line";
1082 _g_snprintf (expected_string, expected_string_len, "%scomment (%s)",
1083 scanner->token == expected_token ? "valid " : "", tstring);
1085 case G_TOKEN_COMMENT_MULTI:
1086 tstring = "multi-line";
1087 _g_snprintf (expected_string, expected_string_len, "%scomment (%s)",
1088 scanner->token == expected_token ? "valid " : "", tstring);
1092 /* this is handled upon printout */
1096 if (message && message[0] != 0)
1097 message_prefix = " - ";
1100 message_prefix = "";
1103 if (expected_token == G_TOKEN_ERROR)
1105 msg_handler (scanner,
1106 "failure around %s%s%s",
1111 else if (expected_token == G_TOKEN_NONE)
1114 msg_handler (scanner,
1115 "unexpected %s%s%s",
1120 msg_handler (scanner,
1129 msg_handler (scanner,
1130 "unexpected %s, expected %s%s%s",
1136 msg_handler (scanner,
1137 "%s, expected %s%s%s",
1144 g_free (token_string);
1145 g_free (expected_string);
1149 g_scanner_get_token_i (GScanner *scanner,
1150 GTokenType *token_p,
1151 GTokenValue *value_p,
1157 g_scanner_free_value (token_p, value_p);
1158 g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
1160 while (((*token_p > 0 && *token_p < 256) &&
1161 strchr (scanner->config->cset_skip_characters, *token_p)) ||
1162 (*token_p == G_TOKEN_CHAR &&
1163 strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
1164 (*token_p == G_TOKEN_COMMENT_MULTI &&
1165 scanner->config->skip_comment_multi) ||
1166 (*token_p == G_TOKEN_COMMENT_SINGLE &&
1167 scanner->config->skip_comment_single));
1171 case G_TOKEN_IDENTIFIER:
1172 if (scanner->config->identifier_2_string)
1173 *token_p = G_TOKEN_STRING;
1176 case G_TOKEN_SYMBOL:
1177 if (scanner->config->symbol_2_token)
1178 *token_p = (GTokenType) value_p->v_symbol;
1181 case G_TOKEN_BINARY:
1184 if (scanner->config->numbers_2_int)
1185 *token_p = G_TOKEN_INT;
1192 if (*token_p == G_TOKEN_INT &&
1193 scanner->config->int_2_float)
1195 *token_p = G_TOKEN_FLOAT;
1196 if (scanner->config->store_int64)
1197 value_p->v_float = value_p->v_int64;
1199 value_p->v_float = value_p->v_int;
1206 g_scanner_get_token_ll (GScanner *scanner,
1207 GTokenType *token_p,
1208 GTokenValue *value_p,
1212 GScannerConfig *config;
1214 gboolean in_comment_multi;
1215 gboolean in_comment_single;
1216 gboolean in_string_sq;
1217 gboolean in_string_dq;
1222 config = scanner->config;
1223 (*value_p).v_int64 = 0;
1225 if ((scanner->text >= scanner->text_end && scanner->input_fd < 0) ||
1226 scanner->token == G_TOKEN_EOF)
1228 *token_p = G_TOKEN_EOF;
1232 in_comment_multi = FALSE;
1233 in_comment_single = FALSE;
1234 in_string_sq = FALSE;
1235 in_string_dq = FALSE;
1238 do /* while (ch != 0) */
1240 gboolean dotted_float = FALSE;
1242 ch = g_scanner_get_char (scanner, line_p, position_p);
1245 token = G_TOKEN_NONE;
1247 /* this is *evil*, but needed ;(
1248 * we first check for identifier first character, because it
1249 * might interfere with other key chars like slashes or numbers
1251 if (config->scan_identifier &&
1252 ch && strchr (config->cset_identifier_first, ch))
1253 goto identifier_precedence;
1258 token = G_TOKEN_EOF;
1264 if (!config->scan_comment_multi ||
1265 g_scanner_peek_next_char (scanner) != '*')
1267 g_scanner_get_char (scanner, line_p, position_p);
1268 token = G_TOKEN_COMMENT_MULTI;
1269 in_comment_multi = TRUE;
1270 gstring = g_string_new ("");
1271 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1273 if (ch == '*' && g_scanner_peek_next_char (scanner) == '/')
1275 g_scanner_get_char (scanner, line_p, position_p);
1276 in_comment_multi = FALSE;
1280 gstring = g_string_append_c (gstring, ch);
1286 if (!config->scan_string_sq)
1288 token = G_TOKEN_STRING;
1289 in_string_sq = TRUE;
1290 gstring = g_string_new ("");
1291 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1295 in_string_sq = FALSE;
1299 gstring = g_string_append_c (gstring, ch);
1305 if (!config->scan_string_dq)
1307 token = G_TOKEN_STRING;
1308 in_string_dq = TRUE;
1309 gstring = g_string_new ("");
1310 while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
1314 in_string_dq = FALSE;
1321 ch = g_scanner_get_char (scanner, line_p, position_p);
1331 gstring = g_string_append_c (gstring, '\\');
1335 gstring = g_string_append_c (gstring, '\n');
1339 gstring = g_string_append_c (gstring, '\t');
1343 gstring = g_string_append_c (gstring, '\r');
1347 gstring = g_string_append_c (gstring, '\b');
1351 gstring = g_string_append_c (gstring, '\f');
1363 fchar = g_scanner_peek_next_char (scanner);
1364 if (fchar >= '0' && fchar <= '7')
1366 ch = g_scanner_get_char (scanner, line_p, position_p);
1367 i = i * 8 + ch - '0';
1368 fchar = g_scanner_peek_next_char (scanner);
1369 if (fchar >= '0' && fchar <= '7')
1371 ch = g_scanner_get_char (scanner, line_p, position_p);
1372 i = i * 8 + ch - '0';
1375 gstring = g_string_append_c (gstring, i);
1379 gstring = g_string_append_c (gstring, ch);
1384 gstring = g_string_append_c (gstring, ch);
1391 if (!config->scan_float)
1393 token = G_TOKEN_FLOAT;
1394 dotted_float = TRUE;
1395 ch = g_scanner_get_char (scanner, line_p, position_p);
1396 goto number_parsing;
1399 if (!config->scan_hex_dollar)
1401 token = G_TOKEN_HEX;
1402 ch = g_scanner_get_char (scanner, line_p, position_p);
1403 goto number_parsing;
1406 if (config->scan_octal)
1407 token = G_TOKEN_OCTAL;
1409 token = G_TOKEN_INT;
1410 ch = g_scanner_peek_next_char (scanner);
1411 if (config->scan_hex && (ch == 'x' || ch == 'X'))
1413 token = G_TOKEN_HEX;
1414 g_scanner_get_char (scanner, line_p, position_p);
1415 ch = g_scanner_get_char (scanner, line_p, position_p);
1418 token = G_TOKEN_ERROR;
1419 value.v_error = G_ERR_UNEXP_EOF;
1423 if (g_scanner_char_2_num (ch, 16) < 0)
1425 token = G_TOKEN_ERROR;
1426 value.v_error = G_ERR_DIGIT_RADIX;
1431 else if (config->scan_binary && (ch == 'b' || ch == 'B'))
1433 token = G_TOKEN_BINARY;
1434 g_scanner_get_char (scanner, line_p, position_p);
1435 ch = g_scanner_get_char (scanner, line_p, position_p);
1438 token = G_TOKEN_ERROR;
1439 value.v_error = G_ERR_UNEXP_EOF;
1443 if (g_scanner_char_2_num (ch, 10) < 0)
1445 token = G_TOKEN_ERROR;
1446 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1465 gboolean in_number = TRUE;
1468 if (token == G_TOKEN_NONE)
1469 token = G_TOKEN_INT;
1471 gstring = g_string_new (dotted_float ? "0." : "");
1472 gstring = g_string_append_c (gstring, ch);
1474 do /* while (in_number) */
1478 is_E = token == G_TOKEN_FLOAT && (ch == 'e' || ch == 'E');
1480 ch = g_scanner_peek_next_char (scanner);
1482 if (g_scanner_char_2_num (ch, 36) >= 0 ||
1483 (config->scan_float && ch == '.') ||
1484 (is_E && (ch == '+' || ch == '-')))
1486 ch = g_scanner_get_char (scanner, line_p, position_p);
1491 if (token != G_TOKEN_INT && token != G_TOKEN_OCTAL)
1493 value.v_error = token == G_TOKEN_FLOAT ? G_ERR_FLOAT_MALFORMED : G_ERR_FLOAT_RADIX;
1494 token = G_TOKEN_ERROR;
1499 token = G_TOKEN_FLOAT;
1500 gstring = g_string_append_c (gstring, ch);
1514 gstring = g_string_append_c (gstring, ch);
1519 if (token != G_TOKEN_FLOAT)
1521 token = G_TOKEN_ERROR;
1522 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1526 gstring = g_string_append_c (gstring, ch);
1531 if ((token != G_TOKEN_HEX && !config->scan_float) ||
1532 (token != G_TOKEN_HEX &&
1533 token != G_TOKEN_OCTAL &&
1534 token != G_TOKEN_FLOAT &&
1535 token != G_TOKEN_INT))
1537 token = G_TOKEN_ERROR;
1538 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1543 if (token != G_TOKEN_HEX)
1544 token = G_TOKEN_FLOAT;
1545 gstring = g_string_append_c (gstring, ch);
1550 if (token != G_TOKEN_HEX)
1552 token = G_TOKEN_ERROR;
1553 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1557 gstring = g_string_append_c (gstring, ch);
1567 if (token == G_TOKEN_FLOAT)
1568 value.v_float = g_strtod (gstring->str, &endptr);
1574 case G_TOKEN_BINARY:
1575 ui64 = g_ascii_strtoull (gstring->str, &endptr, 2);
1578 ui64 = g_ascii_strtoull (gstring->str, &endptr, 8);
1581 ui64 = g_ascii_strtoull (gstring->str, &endptr, 10);
1584 ui64 = g_ascii_strtoull (gstring->str, &endptr, 16);
1588 if (scanner->config->store_int64)
1589 value.v_int64 = ui64;
1593 if (endptr && *endptr)
1595 token = G_TOKEN_ERROR;
1596 if (*endptr == 'e' || *endptr == 'E')
1597 value.v_error = G_ERR_NON_DIGIT_IN_CONST;
1599 value.v_error = G_ERR_DIGIT_RADIX;
1601 g_string_free (gstring, TRUE);
1604 } /* number_parsing:... */
1610 if (config->cpair_comment_single &&
1611 ch == config->cpair_comment_single[0])
1613 token = G_TOKEN_COMMENT_SINGLE;
1614 in_comment_single = TRUE;
1615 gstring = g_string_new ("");
1616 ch = g_scanner_get_char (scanner, line_p, position_p);
1619 if (ch == config->cpair_comment_single[1])
1621 in_comment_single = FALSE;
1626 gstring = g_string_append_c (gstring, ch);
1627 ch = g_scanner_get_char (scanner, line_p, position_p);
1630 else if (config->scan_identifier && ch &&
1631 strchr (config->cset_identifier_first, ch))
1633 identifier_precedence:
1635 if (config->cset_identifier_nth && ch &&
1636 strchr (config->cset_identifier_nth,
1637 g_scanner_peek_next_char (scanner)))
1639 token = G_TOKEN_IDENTIFIER;
1640 gstring = g_string_new ("");
1641 gstring = g_string_append_c (gstring, ch);
1644 ch = g_scanner_get_char (scanner, line_p, position_p);
1645 gstring = g_string_append_c (gstring, ch);
1646 ch = g_scanner_peek_next_char (scanner);
1648 while (ch && strchr (config->cset_identifier_nth, ch));
1651 else if (config->scan_identifier_1char)
1653 token = G_TOKEN_IDENTIFIER;
1654 value.v_identifier = g_new0 (gchar, 2);
1655 value.v_identifier[0] = ch;
1661 if (config->char_2_token)
1665 token = G_TOKEN_CHAR;
1670 } /* default_case:... */
1673 g_assert (ch == 0 && token != G_TOKEN_NONE); /* paranoid */
1677 if (in_comment_multi || in_comment_single ||
1678 in_string_sq || in_string_dq)
1680 token = G_TOKEN_ERROR;
1683 g_string_free (gstring, TRUE);
1687 if (in_comment_multi || in_comment_single)
1688 value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
1689 else /* (in_string_sq || in_string_dq) */
1690 value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
1695 value.v_string = gstring->str;
1696 g_string_free (gstring, FALSE);
1700 if (token == G_TOKEN_IDENTIFIER)
1702 if (config->scan_symbols)
1707 scope_id = scanner->scope_id;
1708 key = g_scanner_lookup_internal (scanner, scope_id, value.v_identifier);
1709 if (!key && scope_id && scanner->config->scope_0_fallback)
1710 key = g_scanner_lookup_internal (scanner, 0, value.v_identifier);
1714 g_free (value.v_identifier);
1715 token = G_TOKEN_SYMBOL;
1716 value.v_symbol = key->value;
1720 if (token == G_TOKEN_IDENTIFIER &&
1721 config->scan_identifier_NULL &&
1722 strlen (value.v_identifier) == 4)
1724 gchar *null_upper = "NULL";
1725 gchar *null_lower = "null";
1727 if (scanner->config->case_sensitive)
1729 if (value.v_identifier[0] == null_upper[0] &&
1730 value.v_identifier[1] == null_upper[1] &&
1731 value.v_identifier[2] == null_upper[2] &&
1732 value.v_identifier[3] == null_upper[3])
1733 token = G_TOKEN_IDENTIFIER_NULL;
1737 if ((value.v_identifier[0] == null_upper[0] ||
1738 value.v_identifier[0] == null_lower[0]) &&
1739 (value.v_identifier[1] == null_upper[1] ||
1740 value.v_identifier[1] == null_lower[1]) &&
1741 (value.v_identifier[2] == null_upper[2] ||
1742 value.v_identifier[2] == null_lower[2]) &&
1743 (value.v_identifier[3] == null_upper[3] ||
1744 value.v_identifier[3] == null_lower[3]))
1745 token = G_TOKEN_IDENTIFIER_NULL;