1 /*
2 * SysDB - src/frontend/grammar.y
3 * Copyright (C) 2013 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 %{
30 #include "frontend/connection-private.h"
31 #include "frontend/parser.h"
32 #include "frontend/grammar.h"
34 #include "core/store.h"
35 #include "core/store-private.h"
36 #include "core/time.h"
38 #include "utils/error.h"
39 #include "utils/llist.h"
41 #include <assert.h>
43 #include <stdio.h>
44 #include <string.h>
46 /*
47 * private helper functions
48 */
50 static sdb_store_matcher_t *
51 name_iter_matcher(int m_type, int type, const char *cmp,
52 sdb_store_expr_t *expr);
54 /*
55 * public API
56 */
58 int
59 sdb_fe_yylex(YYSTYPE *yylval, YYLTYPE *yylloc, sdb_fe_yyscan_t yyscanner);
61 sdb_fe_yyextra_t *
62 sdb_fe_yyget_extra(sdb_fe_yyscan_t scanner);
64 void
65 sdb_fe_yyerror(YYLTYPE *lval, sdb_fe_yyscan_t scanner, const char *msg);
66 void
67 sdb_fe_yyerrorf(YYLTYPE *lval, sdb_fe_yyscan_t scanner, const char *fmt, ...);
69 /* quick access to the current parse tree */
70 #define pt sdb_fe_yyget_extra(scanner)->parsetree
72 /* quick access to the parser mode */
73 #define parser_mode sdb_fe_yyget_extra(scanner)->mode
75 /* quick access to the parser's error buffer */
76 #define errbuf sdb_fe_yyget_extra(scanner)->errbuf
78 #define MODE_TO_STRING(m) \
79 (((m) == SDB_PARSE_DEFAULT) ? "statement" \
80 : ((m) == SDB_PARSE_COND) ? "condition" \
81 : ((m) == SDB_PARSE_EXPR) ? "expression" \
82 : "UNKNOWN")
84 %}
86 %pure-parser
87 %lex-param {sdb_fe_yyscan_t scanner}
88 %parse-param {sdb_fe_yyscan_t scanner}
89 %locations
90 %error-verbose
91 %expect 0
92 %name-prefix "sdb_fe_yy"
94 %union {
95 const char *sstr; /* static string */
96 char *str;
97 int integer;
99 sdb_data_t data;
100 sdb_time_t datetime;
102 sdb_llist_t *list;
103 sdb_conn_node_t *node;
105 sdb_store_matcher_t *m;
106 sdb_store_expr_t *expr;
107 }
109 %start statements
111 %token SCANNER_ERROR
113 %token AND OR IS NOT MATCHING FILTER
114 %token CMP_EQUAL CMP_NEQUAL CMP_REGEX CMP_NREGEX
115 %token CMP_LT CMP_LE CMP_GE CMP_GT ALL ANY IN
116 %token CONCAT
118 %token HOST_T HOSTS_T SERVICE_T SERVICES_T METRIC_T METRICS_T
119 %token ATTRIBUTE_T ATTRIBUTES_T
120 %token NAME_T LAST_UPDATE_T AGE_T INTERVAL_T BACKEND_T
122 %token START END
124 /* NULL token */
125 %token NULL_T
127 %token FETCH LIST LOOKUP TIMESERIES
129 %token <str> IDENTIFIER STRING
131 %token <data> INTEGER FLOAT
133 %token <datetime> DATE TIME
135 /* Precedence (lowest first): */
136 %left OR
137 %left AND
138 %right NOT
139 %left CMP_EQUAL CMP_NEQUAL
140 %left CMP_LT CMP_LE CMP_GE CMP_GT
141 %nonassoc CMP_REGEX CMP_NREGEX
142 %nonassoc IN
143 %left CONCAT
144 %nonassoc IS
145 %left '+' '-'
146 %left '*' '/' '%'
147 %left '[' ']'
148 %left '(' ')'
149 %left '.'
151 %type <list> statements
152 %type <node> statement
153 fetch_statement
154 list_statement
155 lookup_statement
156 timeseries_statement
157 matching_clause
158 filter_clause
159 condition
161 %type <m> matcher
162 compare_matcher
164 %type <expr> expression object_expression
166 %type <integer> object_type object_type_plural
167 %type <integer> iterable
168 %type <integer> field
170 %type <sstr> cmp
172 %type <data> data
173 interval interval_elem
174 array array_elem_list
176 %type <datetime> datetime
177 start_clause end_clause
179 %destructor { free($$); } <str>
180 %destructor { sdb_object_deref(SDB_OBJ($$)); } <node> <m> <expr>
181 %destructor { sdb_data_free_datum(&$$); } <data>
183 %%
185 statements:
186 statements ';' statement
187 {
188 /* only accepted in default parse mode */
189 if (parser_mode != SDB_PARSE_DEFAULT) {
190 sdb_fe_yyerrorf(&yylloc, scanner,
191 YY_("syntax error, unexpected statement, "
192 "expecting %s"), MODE_TO_STRING(parser_mode));
193 sdb_object_deref(SDB_OBJ($3));
194 YYABORT;
195 }
197 if ($3) {
198 sdb_llist_append(pt, SDB_OBJ($3));
199 sdb_object_deref(SDB_OBJ($3));
200 }
201 }
202 |
203 statement
204 {
205 /* only accepted in default parse mode */
206 if (parser_mode != SDB_PARSE_DEFAULT) {
207 sdb_fe_yyerrorf(&yylloc, scanner,
208 YY_("syntax error, unexpected statement, "
209 "expecting %s"), MODE_TO_STRING(parser_mode));
210 sdb_object_deref(SDB_OBJ($1));
211 YYABORT;
212 }
214 if ($1) {
215 sdb_llist_append(pt, SDB_OBJ($1));
216 sdb_object_deref(SDB_OBJ($1));
217 }
218 }
219 |
220 condition
221 {
222 /* only accepted in condition parse mode */
223 if (! (parser_mode & SDB_PARSE_COND)) {
224 sdb_fe_yyerrorf(&yylloc, scanner,
225 YY_("syntax error, unexpected condition, "
226 "expecting %s"), MODE_TO_STRING(parser_mode));
227 sdb_object_deref(SDB_OBJ($1));
228 YYABORT;
229 }
231 if ($1) {
232 sdb_llist_append(pt, SDB_OBJ($1));
233 sdb_object_deref(SDB_OBJ($1));
234 }
235 }
236 |
237 expression
238 {
239 /* only accepted in expression parse mode */
240 if (! (parser_mode & SDB_PARSE_EXPR)) {
241 sdb_fe_yyerrorf(&yylloc, scanner,
242 YY_("syntax error, unexpected expression, "
243 "expecting %s"), MODE_TO_STRING(parser_mode));
244 sdb_object_deref(SDB_OBJ($1));
245 YYABORT;
246 }
248 if ($1) {
249 sdb_conn_node_t *n;
250 n = SDB_CONN_NODE(sdb_object_create_dT(/* name = */ NULL,
251 conn_expr_t, conn_expr_destroy));
252 n->cmd = SDB_CONNECTION_EXPR;
253 CONN_EXPR(n)->expr = $1;
255 sdb_llist_append(pt, SDB_OBJ(n));
256 sdb_object_deref(SDB_OBJ(n));
257 }
258 }
259 ;
261 statement:
262 fetch_statement
263 |
264 list_statement
265 |
266 lookup_statement
267 |
268 timeseries_statement
269 |
270 /* empty */
271 {
272 $$ = NULL;
273 }
274 ;
276 /*
277 * FETCH <type> <hostname> [FILTER <condition>];
278 *
279 * Retrieve detailed information about a single host.
280 */
281 fetch_statement:
282 FETCH object_type STRING filter_clause
283 {
284 $$ = SDB_CONN_NODE(sdb_object_create_dT(/* name = */ NULL,
285 conn_fetch_t, conn_fetch_destroy));
286 CONN_FETCH($$)->type = $2;
287 CONN_FETCH($$)->host = $3;
288 CONN_FETCH($$)->name = NULL;
289 CONN_FETCH($$)->filter = CONN_MATCHER($4);
290 $$->cmd = SDB_CONNECTION_FETCH;
291 }
292 |
293 FETCH object_type STRING '.' STRING filter_clause
294 {
295 $$ = SDB_CONN_NODE(sdb_object_create_dT(/* name = */ NULL,
296 conn_fetch_t, conn_fetch_destroy));
297 CONN_FETCH($$)->type = $2;
298 CONN_FETCH($$)->host = $3;
299 CONN_FETCH($$)->name = $5;
300 CONN_FETCH($$)->filter = CONN_MATCHER($6);
301 $$->cmd = SDB_CONNECTION_FETCH;
302 }
303 ;
305 /*
306 * LIST <type> [FILTER <condition>];
307 *
308 * Returns a list of all hosts in the store.
309 */
310 list_statement:
311 LIST object_type_plural filter_clause
312 {
313 $$ = SDB_CONN_NODE(sdb_object_create_dT(/* name = */ NULL,
314 conn_list_t, conn_list_destroy));
315 CONN_LIST($$)->type = $2;
316 CONN_LIST($$)->filter = CONN_MATCHER($3);
317 $$->cmd = SDB_CONNECTION_LIST;
318 }
319 ;
321 /*
322 * LOOKUP <type> MATCHING <condition> [FILTER <condition>];
323 *
324 * Returns detailed information about <type> matching condition.
325 */
326 lookup_statement:
327 LOOKUP object_type_plural matching_clause filter_clause
328 {
329 $$ = SDB_CONN_NODE(sdb_object_create_dT(/* name = */ NULL,
330 conn_lookup_t, conn_lookup_destroy));
331 CONN_LOOKUP($$)->type = $2;
332 CONN_LOOKUP($$)->matcher = CONN_MATCHER($3);
333 CONN_LOOKUP($$)->filter = CONN_MATCHER($4);
334 $$->cmd = SDB_CONNECTION_LOOKUP;
335 }
336 ;
338 matching_clause:
339 MATCHING condition { $$ = $2; }
340 |
341 /* empty */ { $$ = NULL; }
343 filter_clause:
344 FILTER condition { $$ = $2; }
345 |
346 /* empty */ { $$ = NULL; }
348 /*
349 * TIMESERIES <host>.<metric> [START <datetime>] [END <datetime>];
350 *
351 * Returns a time-series for the specified host's metric.
352 */
353 timeseries_statement:
354 TIMESERIES STRING '.' STRING start_clause end_clause
355 {
356 $$ = SDB_CONN_NODE(sdb_object_create_dT(/* name = */ NULL,
357 conn_ts_t, conn_ts_destroy));
358 CONN_TS($$)->hostname = $2;
359 CONN_TS($$)->metric = $4;
360 CONN_TS($$)->opts.start = $5;
361 CONN_TS($$)->opts.end = $6;
362 $$->cmd = SDB_CONNECTION_TIMESERIES;
363 }
364 ;
366 start_clause:
367 START datetime { $$ = $2; }
368 |
369 /* empty */ { $$ = sdb_gettime() - SDB_INTERVAL_HOUR; }
371 end_clause:
372 END datetime { $$ = $2; }
373 |
374 /* empty */ { $$ = sdb_gettime(); }
376 /*
377 * Basic expressions.
378 */
380 condition:
381 matcher
382 {
383 if (! $1) {
384 /* TODO: improve error reporting */
385 sdb_fe_yyerror(&yylloc, scanner,
386 YY_("syntax error, invalid condition"));
387 YYABORT;
388 }
390 $$ = SDB_CONN_NODE(sdb_object_create_dT(/* name = */ NULL,
391 conn_matcher_t, conn_matcher_destroy));
392 $$->cmd = SDB_CONNECTION_MATCHER;
393 CONN_MATCHER($$)->matcher = $1;
394 }
395 ;
397 matcher:
398 '(' matcher ')'
399 {
400 $$ = $2;
401 }
402 |
403 matcher AND matcher
404 {
405 $$ = sdb_store_con_matcher($1, $3);
406 sdb_object_deref(SDB_OBJ($1));
407 sdb_object_deref(SDB_OBJ($3));
408 }
409 |
410 matcher OR matcher
411 {
412 $$ = sdb_store_dis_matcher($1, $3);
413 sdb_object_deref(SDB_OBJ($1));
414 sdb_object_deref(SDB_OBJ($3));
415 }
416 |
417 NOT matcher
418 {
419 $$ = sdb_store_inv_matcher($2);
420 sdb_object_deref(SDB_OBJ($2));
421 }
422 |
423 compare_matcher
424 {
425 $$ = $1;
426 }
427 ;
429 compare_matcher:
430 expression cmp expression
431 {
432 sdb_store_matcher_op_cb cb = sdb_store_parse_matcher_op($2);
433 assert(cb); /* else, the grammar accepts invalid 'cmp' */
434 $$ = cb($1, $3);
435 sdb_object_deref(SDB_OBJ($1));
436 sdb_object_deref(SDB_OBJ($3));
437 }
438 |
439 ANY iterable cmp expression
440 {
441 $$ = name_iter_matcher(MATCHER_ANY, $2, $3, $4);
442 sdb_object_deref(SDB_OBJ($4));
443 }
444 |
445 ALL iterable cmp expression
446 {
447 $$ = name_iter_matcher(MATCHER_ALL, $2, $3, $4);
448 sdb_object_deref(SDB_OBJ($4));
449 }
450 |
451 expression IS NULL_T
452 {
453 $$ = sdb_store_isnull_matcher($1);
454 sdb_object_deref(SDB_OBJ($1));
455 }
456 |
457 expression IS NOT NULL_T
458 {
459 $$ = sdb_store_isnnull_matcher($1);
460 sdb_object_deref(SDB_OBJ($1));
461 }
462 |
463 expression IN expression
464 {
465 $$ = sdb_store_in_matcher($1, $3);
466 sdb_object_deref(SDB_OBJ($1));
467 sdb_object_deref(SDB_OBJ($3));
468 }
469 ;
471 expression:
472 '(' expression ')'
473 {
474 $$ = $2;
475 }
476 |
477 expression '+' expression
478 {
479 $$ = sdb_store_expr_create(SDB_DATA_ADD, $1, $3);
480 sdb_object_deref(SDB_OBJ($1)); $1 = NULL;
481 sdb_object_deref(SDB_OBJ($3)); $3 = NULL;
482 }
483 |
484 expression '-' expression
485 {
486 $$ = sdb_store_expr_create(SDB_DATA_SUB, $1, $3);
487 sdb_object_deref(SDB_OBJ($1)); $1 = NULL;
488 sdb_object_deref(SDB_OBJ($3)); $3 = NULL;
489 }
490 |
491 expression '*' expression
492 {
493 $$ = sdb_store_expr_create(SDB_DATA_MUL, $1, $3);
494 sdb_object_deref(SDB_OBJ($1)); $1 = NULL;
495 sdb_object_deref(SDB_OBJ($3)); $3 = NULL;
496 }
497 |
498 expression '/' expression
499 {
500 $$ = sdb_store_expr_create(SDB_DATA_DIV, $1, $3);
501 sdb_object_deref(SDB_OBJ($1)); $1 = NULL;
502 sdb_object_deref(SDB_OBJ($3)); $3 = NULL;
503 }
504 |
505 expression '%' expression
506 {
507 $$ = sdb_store_expr_create(SDB_DATA_MOD, $1, $3);
508 sdb_object_deref(SDB_OBJ($1)); $1 = NULL;
509 sdb_object_deref(SDB_OBJ($3)); $3 = NULL;
510 }
511 |
512 expression CONCAT expression
513 {
514 $$ = sdb_store_expr_create(SDB_DATA_CONCAT, $1, $3);
515 sdb_object_deref(SDB_OBJ($1)); $1 = NULL;
516 sdb_object_deref(SDB_OBJ($3)); $3 = NULL;
517 }
518 |
519 object_expression
520 {
521 $$ = $1;
522 }
523 |
524 data
525 {
526 $$ = sdb_store_expr_constvalue(&$1);
527 sdb_data_free_datum(&$1);
528 }
529 ;
531 object_expression:
532 object_type '.' object_expression
533 {
534 $$ = sdb_store_expr_typed($1, $3);
535 sdb_object_deref(SDB_OBJ($3));
536 }
537 |
538 field
539 {
540 $$ = sdb_store_expr_fieldvalue($1);
541 }
542 |
543 ATTRIBUTE_T '[' STRING ']'
544 {
545 $$ = sdb_store_expr_attrvalue($3);
546 free($3); $3 = NULL;
547 }
548 ;
550 object_type:
551 HOST_T { $$ = SDB_HOST; }
552 |
553 SERVICE_T { $$ = SDB_SERVICE; }
554 |
555 METRIC_T { $$ = SDB_METRIC; }
556 ;
558 object_type_plural:
559 HOSTS_T { $$ = SDB_HOST; }
560 |
561 SERVICES_T { $$ = SDB_SERVICE; }
562 |
563 METRICS_T { $$ = SDB_METRIC; }
564 ;
566 iterable:
567 SERVICE_T { $$ = SDB_SERVICE; }
568 |
569 METRIC_T { $$ = SDB_METRIC; }
570 |
571 ATTRIBUTE_T { $$ = SDB_ATTRIBUTE; }
572 |
573 BACKEND_T { $$ = SDB_FIELD_BACKEND; }
574 ;
576 field:
577 NAME_T { $$ = SDB_FIELD_NAME; }
578 |
579 LAST_UPDATE_T { $$ = SDB_FIELD_LAST_UPDATE; }
580 |
581 AGE_T { $$ = SDB_FIELD_AGE; }
582 |
583 INTERVAL_T { $$ = SDB_FIELD_INTERVAL; }
584 |
585 BACKEND_T { $$ = SDB_FIELD_BACKEND; }
586 ;
588 cmp:
589 CMP_EQUAL { $$ = "="; }
590 |
591 CMP_NEQUAL { $$ = "!="; }
592 |
593 CMP_REGEX { $$ = "=~"; }
594 |
595 CMP_NREGEX { $$ = "!~"; }
596 |
597 CMP_LT { $$ = "<"; }
598 |
599 CMP_LE { $$ = "<="; }
600 |
601 CMP_GE { $$ = ">="; }
602 |
603 CMP_GT { $$ = ">"; }
604 ;
606 data:
607 STRING { $$.type = SDB_TYPE_STRING; $$.data.string = $1; }
608 |
609 INTEGER { $$ = $1; }
610 |
611 FLOAT { $$ = $1; }
612 |
613 datetime { $$.type = SDB_TYPE_DATETIME; $$.data.datetime = $1; }
614 |
615 interval { $$ = $1; }
616 |
617 array { $$ = $1; }
618 ;
620 datetime:
621 DATE TIME { $$ = $1 + $2; }
622 |
623 DATE { $$ = $1; }
624 |
625 TIME { $$ = $1; }
626 ;
628 interval:
629 interval interval_elem
630 {
631 $$.data.datetime = $1.data.datetime + $2.data.datetime;
632 }
633 |
634 interval_elem { $$ = $1; }
635 ;
637 interval_elem:
638 INTEGER IDENTIFIER
639 {
640 sdb_time_t unit = 1;
642 unit = sdb_strpunit($2);
643 if (! unit) {
644 sdb_fe_yyerrorf(&yylloc, scanner,
645 YY_("syntax error, invalid time unit %s"), $2);
646 free($2); $2 = NULL;
647 YYABORT;
648 }
649 free($2); $2 = NULL;
651 $$.type = SDB_TYPE_DATETIME;
652 $$.data.datetime = (sdb_time_t)$1.data.integer * unit;
654 if ($1.data.integer < 0) {
655 sdb_fe_yyerror(&yylloc, scanner,
656 YY_("syntax error, negative intervals not supported"));
657 YYABORT;
658 }
659 }
660 ;
662 array:
663 '[' array_elem_list ']'
664 {
665 $$ = $2;
666 }
667 ;
669 array_elem_list:
670 array_elem_list ',' data
671 {
672 size_t elem_size;
674 if (($3.type & SDB_TYPE_ARRAY) || (($1.type & 0xff) != $3.type)) {
675 sdb_fe_yyerrorf(&yylloc, scanner, YY_("syntax error, "
676 "cannot use element of type %s in array of type %s"),
677 SDB_TYPE_TO_STRING($3.type),
678 SDB_TYPE_TO_STRING($1.type));
679 sdb_data_free_datum(&$1);
680 sdb_data_free_datum(&$3);
681 YYABORT;
682 }
684 elem_size = sdb_data_sizeof($3.type);
685 $1.data.array.values = realloc($1.data.array.values,
686 ($1.data.array.length + 1) * elem_size);
687 if (! $1.data.array.values) {
688 sdb_fe_yyerror(&yylloc, scanner, YY_("out of memory"));
689 YYABORT;
690 }
692 memcpy((char *)$1.data.array.values
693 + $1.data.array.length * elem_size,
694 &$3.data, elem_size);
695 ++$1.data.array.length;
697 $$ = $1;
698 }
699 |
700 data
701 {
702 size_t elem_size;
704 if ($1.type & SDB_TYPE_ARRAY) {
705 sdb_fe_yyerrorf(&yylloc, scanner, YY_("syntax error, "
706 "cannot construct array of type %s"),
707 SDB_TYPE_TO_STRING($1.type));
708 sdb_data_free_datum(&$1);
709 YYABORT;
710 }
712 $$ = $1;
713 $$.type = $1.type | SDB_TYPE_ARRAY;
714 $$.data.array.length = 1;
715 elem_size = sdb_data_sizeof($1.type);
716 $$.data.array.values = malloc(elem_size);
717 if (! $$.data.array.values ) {
718 sdb_fe_yyerror(&yylloc, scanner, YY_("out of memory"));
719 YYABORT;
720 }
721 memcpy($$.data.array.values, &$1.data, elem_size);
722 }
723 ;
725 %%
727 void
728 sdb_fe_yyerror(YYLTYPE *lval, sdb_fe_yyscan_t scanner, const char *msg)
729 {
730 sdb_log(SDB_LOG_ERR, "frontend: parse error: %s", msg);
731 sdb_strbuf_sprintf(errbuf, "%s", msg);
732 } /* sdb_fe_yyerror */
734 void
735 sdb_fe_yyerrorf(YYLTYPE *lval, sdb_fe_yyscan_t scanner, const char *fmt, ...)
736 {
737 va_list ap, aq;
738 va_start(ap, fmt);
739 va_copy(aq, ap);
740 sdb_vlog(SDB_LOG_ERR, fmt, ap);
741 sdb_strbuf_vsprintf(errbuf, "%s", aq);
742 va_end(ap);
743 } /* sdb_fe_yyerrorf */
745 static sdb_store_matcher_t *
746 name_iter_matcher(int m_type, int type, const char *cmp,
747 sdb_store_expr_t *expr)
748 {
749 sdb_store_matcher_op_cb cb = sdb_store_parse_matcher_op(cmp);
750 sdb_store_expr_t *e;
751 sdb_store_matcher_t *m, *tmp = NULL;
752 assert(cb);
754 /* hosts are never iterable */
755 if (type == SDB_HOST) {
756 return NULL;
757 }
759 if (type == SDB_FIELD_BACKEND)
760 e = sdb_store_expr_fieldvalue(type);
761 else
762 e = sdb_store_expr_fieldvalue(SDB_FIELD_NAME);
763 m = cb(e, expr);
764 if (m_type == MATCHER_ANY)
765 tmp = sdb_store_any_matcher(type, m);
766 else if (m_type == MATCHER_ALL)
767 tmp = sdb_store_all_matcher(type, m);
768 sdb_object_deref(SDB_OBJ(m));
769 sdb_object_deref(SDB_OBJ(e));
770 return tmp;
771 } /* name_iter_matcher */
773 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */