e03cbdbc3d2e9ff259e9d18f6729bf9751e920b7
1 /*
2 * SysDB - src/parser/analyzer.c
3 * Copyright (C) 2014-2015 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 #include "sysdb.h"
30 #include "parser/ast.h"
31 #include "parser/parser.h"
32 #include "utils/error.h"
33 #include "utils/strbuf.h"
35 #include <assert.h>
36 #include <stdarg.h>
38 #define VALID_OBJ_TYPE(t) ((SDB_HOST <= (t)) && ((t) <= SDB_METRIC))
40 #define FILTER_CONTEXT -1
41 #define UNSPEC_CONTEXT -2
43 static int
44 analyze_node(int context, sdb_ast_node_t *node, sdb_strbuf_t *errbuf);
46 /*
47 * error reporting
48 */
50 static void
51 op_error(sdb_strbuf_t *errbuf, sdb_ast_op_t *op, const char *reason)
52 {
53 sdb_strbuf_sprintf(errbuf, "Invalid operation %s %s %s (%s)",
54 SDB_TYPE_TO_STRING(op->left->data_type),
55 SDB_AST_OP_TO_STRING(op->kind),
56 SDB_TYPE_TO_STRING(op->right->data_type),
57 reason);
58 } /* op_error */
60 static void
61 __attribute__((format(printf, 3, 4)))
62 iter_error(sdb_strbuf_t *errbuf, sdb_ast_iter_t *iter, const char *reason, ...)
63 {
64 char r[1024];
65 va_list ap;
67 va_start(ap, reason);
68 vsnprintf(r, sizeof(r), reason, ap);
69 va_end(ap);
71 assert((iter->expr->type == SDB_AST_TYPE_OPERATOR)
72 && (! SDB_AST_OP(iter->expr)->left));
73 sdb_strbuf_sprintf(errbuf, "Invalid iterator %s %s %s %s (%s)",
74 SDB_AST_OP_TO_STRING(iter->kind),
75 SDB_TYPE_TO_STRING(iter->iter->data_type),
76 SDB_AST_OP_TO_STRING(SDB_AST_OP(iter->expr)->kind),
77 SDB_TYPE_TO_STRING(SDB_AST_OP(iter->expr)->right->data_type),
78 r);
79 } /* iter_error */
81 /*
82 * expression nodes
83 */
85 static int
86 analyze_logical(int context, sdb_ast_op_t *op, sdb_strbuf_t *errbuf)
87 {
88 switch (op->kind) {
89 case SDB_AST_OR:
90 case SDB_AST_AND:
91 if (! SDB_AST_IS_LOGICAL(op->left)) {
92 sdb_strbuf_sprintf(errbuf, "Invalid left operand (%s) "
93 "in %s expression", SDB_AST_TYPE_TO_STRING(op->left),
94 SDB_AST_OP_TO_STRING(op->kind));
95 return -1;
96 }
97 if (analyze_node(context, op->left, errbuf))
98 return -1;
99 /* fallthrough */
100 case SDB_AST_NOT:
101 if (! SDB_AST_IS_LOGICAL(op->right)) {
102 sdb_strbuf_sprintf(errbuf, "Invalid right operand (%s) "
103 "in %s expression", SDB_AST_TYPE_TO_STRING(op->right),
104 SDB_AST_OP_TO_STRING(op->kind));
105 return -1;
106 }
107 if (analyze_node(context, op->right, errbuf))
108 return -1;
109 break;
111 case SDB_AST_LT:
112 case SDB_AST_LE:
113 case SDB_AST_EQ:
114 case SDB_AST_NE:
115 case SDB_AST_GE:
116 case SDB_AST_GT:
117 {
118 if (analyze_node(context, op->left, errbuf))
119 return -1;
120 if (analyze_node(context, op->right, errbuf))
121 return -1;
123 if ((op->left->data_type > 0) && (op->right->data_type > 0)) {
124 if (op->left->data_type == op->right->data_type)
125 return 0;
126 op_error(errbuf, op, "type mismatch");
127 return -1;
128 }
129 if ((op->left->data_type > 0) && (op->left->data_type & SDB_TYPE_ARRAY)) {
130 op_error(errbuf, op, "array not allowed");
131 return -1;
132 }
133 if ((op->right->data_type > 0) && (op->right->data_type & SDB_TYPE_ARRAY)) {
134 op_error(errbuf, op, "array not allowed");
135 return -1;
136 }
137 break;
138 }
140 case SDB_AST_REGEX:
141 case SDB_AST_NREGEX:
142 if (analyze_node(context, op->left, errbuf))
143 return -1;
144 if (analyze_node(context, op->right, errbuf))
145 return -1;
147 /* all types are supported for the left operand
148 * TODO: introduce a cast operator if it's not a string */
149 if ((op->right->data_type > 0)
150 && (op->right->data_type != SDB_TYPE_REGEX)
151 && (op->right->data_type != SDB_TYPE_STRING)) {
152 op_error(errbuf, op, "invalid regex");
153 return -1;
154 }
155 break;
157 case SDB_AST_ISNULL:
158 if (analyze_node(context, op->right, errbuf))
159 return -1;
160 break;
162 case SDB_AST_IN:
163 if (analyze_node(context, op->left, errbuf))
164 return -1;
165 if (analyze_node(context, op->right, errbuf))
166 return -1;
168 if ((op->right->data_type > 0) && (! (op->right->data_type & SDB_TYPE_ARRAY))) {
169 op_error(errbuf, op, "array expected");
170 return -1;
171 }
172 /* the left operand may be a scalar or an array but the element
173 * type has to match */
174 if ((op->left->data_type > 0) && (op->right->data_type > 0)
175 && ((op->left->data_type & 0xff) != (op->right->data_type & 0xff))) {
176 op_error(errbuf, op, "type mismatch");
177 return -1;
178 }
179 break;
181 default:
182 sdb_strbuf_sprintf(errbuf, "Unknown operand type %d", op->kind);
183 return -1;
184 }
185 return 0;
186 } /* analyze_logical */
188 static int
189 analyze_arith(int context, sdb_ast_op_t *op, sdb_strbuf_t *errbuf)
190 {
191 if (analyze_node(context, op->left, errbuf))
192 return -1;
193 if (analyze_node(context, op->right, errbuf))
194 return -1;
195 SDB_AST_NODE(op)->data_type = sdb_data_expr_type(SDB_AST_OP_TO_DATA_OP(op->kind),
196 op->left->data_type, op->right->data_type);
198 if ((op->left->data_type > 0) && (op->right->data_type > 0)
199 && (SDB_AST_NODE(op)->data_type <= 0)) {
200 op_error(errbuf, op, "type mismatch");
201 return -1;
202 }
204 /* TODO: replace constant arithmetic operations with a constant value */
205 return 0;
206 } /* analyze_arith */
208 static int
209 analyze_iter(int context, sdb_ast_iter_t *iter, sdb_strbuf_t *errbuf)
210 {
211 sdb_ast_const_t c = SDB_AST_CONST_INIT;
212 int iter_context = context;
213 int status;
215 if (iter->iter->type == SDB_AST_TYPE_TYPED)
216 iter_context = SDB_AST_TYPED(iter->iter)->type;
218 if (analyze_node(iter_context, iter->iter, errbuf))
219 return -1;
220 /* TODO: support other setups as well */
221 assert((iter->expr->type == SDB_AST_TYPE_OPERATOR)
222 && (! SDB_AST_OP(iter->expr)->left));
223 /* determine the data-type for better error messages */
224 analyze_node(iter_context, SDB_AST_OP(iter->expr)->right, NULL);
226 if (iter->iter->type == SDB_AST_TYPE_TYPED) {
227 int iter_type = SDB_AST_TYPED(iter->iter)->type;
229 c.value.type = iter->iter->data_type;
231 if (iter_type == SDB_ATTRIBUTE) {
232 /* attributes are always iterable */
233 }
234 else if ((context != SDB_HOST) && (context != SDB_SERVICE)
235 && (context != SDB_METRIC) && (context != UNSPEC_CONTEXT)) {
236 iter_error(errbuf, iter, "%s not iterable in %s context",
237 SDB_STORE_TYPE_TO_NAME(iter_type),
238 SDB_STORE_TYPE_TO_NAME(context));
239 return -1;
240 }
242 if ((context == iter_type)
243 || ((iter_type != SDB_SERVICE)
244 && (iter_type != SDB_METRIC)
245 && (iter_type != SDB_ATTRIBUTE))
246 || ((context == SDB_SERVICE)
247 && (iter_type == SDB_METRIC))
248 || ((context == SDB_METRIC)
249 && (iter_type == SDB_SERVICE))) {
250 iter_error(errbuf, iter, "%s not iterable in %s context",
251 SDB_STORE_TYPE_TO_NAME(iter_type),
252 SDB_STORE_TYPE_TO_NAME(context));
253 return -1;
254 }
255 }
256 else if (iter->iter->type == SDB_AST_TYPE_VALUE) {
257 int iter_type = SDB_AST_VALUE(iter->iter)->type;
259 c.value.type = iter->iter->data_type & 0xff;
261 if (iter_type != SDB_FIELD_BACKEND) {
262 iter_error(errbuf, iter, "%s not iterable in %s context",
263 (iter_type == SDB_ATTRIBUTE)
264 ? "attribute"
265 : SDB_FIELD_TO_NAME(iter_type),
266 SDB_STORE_TYPE_TO_NAME(context));
267 return -1;
268 }
269 }
270 else if (iter->iter->type == SDB_AST_TYPE_CONST) {
271 c.value.type = iter->iter->data_type & 0xff;
273 if (! (SDB_AST_CONST(iter->iter)->value.type & SDB_TYPE_ARRAY)) {
274 iter_error(errbuf, iter, "%s not iterable",
275 SDB_TYPE_TO_STRING(SDB_AST_CONST(iter->iter)->value.type));
276 return -1;
277 }
278 }
279 else {
280 /* TODO: if we know the data-type of iter->iter and it's an array,
281 * we should support an iterator for it as well */
282 iter_error(errbuf, iter, "%s expression not iterable",
283 SDB_AST_TYPE_TO_STRING(iter->iter));
284 return -1;
285 }
287 SDB_AST_OP(iter->expr)->left = SDB_AST_NODE(&c);
288 status = analyze_node(context, iter->expr, errbuf);
289 SDB_AST_OP(iter->expr)->left = NULL;
290 if (status)
291 return -1;
292 return 0;
293 } /* analyze_iter */
295 static int
296 analyze_const(int __attribute__((unused)) context, sdb_ast_const_t *c,
297 sdb_strbuf_t __attribute__((unused)) *errbuf)
298 {
299 SDB_AST_NODE(c)->data_type = c->value.type;
300 return 0;
301 } /* analyze_const */
303 static int
304 analyze_value(int context, sdb_ast_value_t *v, sdb_strbuf_t *errbuf)
305 {
306 if (v->type != SDB_ATTRIBUTE)
307 SDB_AST_NODE(v)->data_type = SDB_FIELD_TYPE(v->type);
309 if ((v->type != SDB_ATTRIBUTE) && v->name) {
310 sdb_strbuf_sprintf(errbuf, "Invalid expression %s[%s]",
311 SDB_FIELD_TO_NAME(v->type), v->name);
312 return -1;
313 }
314 else if ((v->type == SDB_ATTRIBUTE) && (! v->name)) {
315 sdb_strbuf_sprintf(errbuf, "Invalid expression attribute[] "
316 "(missing name)");
317 return -1;
318 }
320 if ((context != SDB_ATTRIBUTE) && (v->type == SDB_FIELD_VALUE)) {
321 sdb_strbuf_sprintf(errbuf, "Invalid expression %s.value",
322 SDB_FIELD_TO_NAME(v->type));
323 return -1;
324 }
325 return 0;
326 } /* analyze_value */
328 static int
329 analyze_typed(int context, sdb_ast_typed_t *t, sdb_strbuf_t *errbuf)
330 {
331 if ((t->expr->type != SDB_AST_TYPE_VALUE)
332 && (t->expr->type != SDB_AST_TYPE_TYPED)) {
333 sdb_strbuf_sprintf(errbuf, "Invalid expression %s.%s",
334 SDB_STORE_TYPE_TO_NAME(t->type),
335 SDB_AST_TYPE_TO_STRING(t->expr));
336 return -1;
337 }
338 if (analyze_node(t->type, t->expr, errbuf))
339 return -1;
340 SDB_AST_NODE(t)->data_type = t->expr->data_type;
342 if ((t->type != SDB_ATTRIBUTE) && (! VALID_OBJ_TYPE(t->type))) {
343 sdb_strbuf_sprintf(errbuf, "Invalid expression %#x.%s",
344 t->type, SDB_AST_TYPE_TO_STRING(t->expr));
345 return -1;
346 }
348 /* self-references are allowed and services and metrics may reference
349 * their parent host; everything may reference attributes */
350 if ((context != t->type) && (context > 0)
351 && (((context != SDB_SERVICE) && (context != SDB_METRIC))
352 || (t->type != SDB_HOST))
353 && (t->type != SDB_ATTRIBUTE)) {
354 sdb_strbuf_sprintf(errbuf, "Invalid expression %s.%s in %s context",
355 SDB_STORE_TYPE_TO_NAME(t->type),
356 SDB_AST_TYPE_TO_STRING(t->expr),
357 context == -1 ? "generic" : SDB_STORE_TYPE_TO_NAME(context));
358 return -1;
359 }
360 return 0;
361 } /* analyze_typed */
363 static int
364 analyze_node(int context, sdb_ast_node_t *node, sdb_strbuf_t *errbuf)
365 {
366 if (! node) {
367 sdb_strbuf_sprintf(errbuf, "Empty AST node");
368 return -1;
369 }
371 /* unknown by default */
372 node->data_type = -1;
374 if ((node->type == SDB_AST_TYPE_OPERATOR)
375 && (SDB_AST_IS_LOGICAL(node)))
376 return analyze_logical(context, SDB_AST_OP(node), errbuf);
377 else if ((node->type == SDB_AST_TYPE_OPERATOR)
378 && (SDB_AST_IS_ARITHMETIC(node)))
379 return analyze_arith(context, SDB_AST_OP(node), errbuf);
380 else if (node->type == SDB_AST_TYPE_ITERATOR)
381 return analyze_iter(context, SDB_AST_ITER(node), errbuf);
382 else if (node->type == SDB_AST_TYPE_CONST)
383 return analyze_const(context, SDB_AST_CONST(node), errbuf);
384 else if (node->type == SDB_AST_TYPE_VALUE)
385 return analyze_value(context, SDB_AST_VALUE(node), errbuf);
386 else if (node->type == SDB_AST_TYPE_TYPED)
387 return analyze_typed(context, SDB_AST_TYPED(node), errbuf);
389 sdb_strbuf_sprintf(errbuf, "Invalid expression node "
390 "of type %#x", node->type);
391 return -1;
392 } /* analyze_node */
394 /*
395 * top level / command nodes
396 */
398 static int
399 analyze_fetch(sdb_ast_fetch_t *fetch, sdb_strbuf_t *errbuf)
400 {
401 if (! VALID_OBJ_TYPE(fetch->obj_type)) {
402 sdb_strbuf_sprintf(errbuf, "Invalid object type %#x "
403 "in FETCH command", fetch->obj_type);
404 return -1;
405 }
406 if (! fetch->name) {
407 sdb_strbuf_sprintf(errbuf, "Missing object name in "
408 "FETCH %s command", SDB_STORE_TYPE_TO_NAME(fetch->obj_type));
409 return -1;
410 }
412 if ((fetch->obj_type == SDB_HOST) && fetch->hostname) {
413 sdb_strbuf_sprintf(errbuf, "Unexpected parent hostname '%s' "
414 "in FETCH HOST command", fetch->hostname);
415 return -1;
416 }
417 else if ((fetch->obj_type != SDB_HOST) && (! fetch->hostname)) {
418 sdb_strbuf_sprintf(errbuf, "Missing parent hostname for '%s' "
419 "in FETCH %s command", fetch->name,
420 SDB_STORE_TYPE_TO_NAME(fetch->obj_type));
421 return -1;
422 }
424 if (fetch->filter)
425 return analyze_node(FILTER_CONTEXT, fetch->filter, errbuf);
426 return 0;
427 } /* analyze_fetch */
429 static int
430 analyze_list(sdb_ast_list_t *list, sdb_strbuf_t *errbuf)
431 {
432 if (! VALID_OBJ_TYPE(list->obj_type)) {
433 sdb_strbuf_sprintf(errbuf, "Invalid object type %#x "
434 "in LIST command", list->obj_type);
435 return -1;
436 }
437 if (list->filter)
438 return analyze_node(FILTER_CONTEXT, list->filter, errbuf);
439 return 0;
440 } /* analyze_list */
442 static int
443 analyze_lookup(sdb_ast_lookup_t *lookup, sdb_strbuf_t *errbuf)
444 {
445 if (! VALID_OBJ_TYPE(lookup->obj_type)) {
446 sdb_strbuf_sprintf(errbuf, "Invalid object type %#x "
447 "in LOOKUP command", lookup->obj_type);
448 return -1;
449 }
450 if (lookup->matcher)
451 if (analyze_node(lookup->obj_type, lookup->matcher, errbuf))
452 return -1;
453 if (lookup->filter)
454 return analyze_node(FILTER_CONTEXT, lookup->filter, errbuf);
455 return 0;
456 } /* analyze_lookup */
458 static int
459 analyze_store(sdb_ast_store_t *st, sdb_strbuf_t *errbuf)
460 {
461 if ((st->obj_type != SDB_ATTRIBUTE)
462 && (! VALID_OBJ_TYPE(st->obj_type))) {
463 sdb_strbuf_sprintf(errbuf, "Invalid object type %#x "
464 "in STORE command", st->obj_type);
465 return -1;
466 }
467 if (! st->name) {
468 sdb_strbuf_sprintf(errbuf, "Missing object name in "
469 "STORE %s command", SDB_STORE_TYPE_TO_NAME(st->obj_type));
470 return -1;
471 }
473 if ((st->obj_type == SDB_HOST) && st->hostname) {
474 sdb_strbuf_sprintf(errbuf, "Unexpected parent hostname '%s' "
475 "in STORE HOST command", st->hostname);
476 return -1;
477 }
478 else if ((st->obj_type != SDB_HOST) && (! st->hostname)) {
479 sdb_strbuf_sprintf(errbuf, "Missing parent hostname for '%s' "
480 "in STORE %s command", st->name,
481 SDB_STORE_TYPE_TO_NAME(st->obj_type));
482 return -1;
483 }
485 if (st->obj_type == SDB_ATTRIBUTE) {
486 if ((st->parent_type <= 0) && st->parent) {
487 sdb_strbuf_sprintf(errbuf, "Unexpected parent hostname '%s' "
488 "in STORE %s command", st->parent,
489 SDB_STORE_TYPE_TO_NAME(st->obj_type));
490 return -1;
491 }
492 else if (st->parent_type > 0) {
493 if (! VALID_OBJ_TYPE(st->parent_type)) {
494 sdb_strbuf_sprintf(errbuf, "Invalid parent type %#x "
495 "in STORE %s command", st->parent_type,
496 SDB_STORE_TYPE_TO_NAME(st->obj_type));
497 return -1;
498 }
499 if (! st->parent) {
500 sdb_strbuf_sprintf(errbuf, "Missing %s parent name "
501 "in STORE %s command",
502 SDB_STORE_TYPE_TO_NAME(st->parent_type),
503 SDB_STORE_TYPE_TO_NAME(st->obj_type));
504 return -1;
505 }
506 }
507 }
508 else if ((st->parent_type > 0) || st->parent) {
509 sdb_strbuf_sprintf(errbuf, "Unexpected %s parent name '%s' "
510 "in STORE %s command",
511 SDB_STORE_TYPE_TO_NAME(st->parent_type),
512 st->parent ? st->parent : "<unknown>",
513 SDB_STORE_TYPE_TO_NAME(st->obj_type));
514 return -1;
515 }
517 if (st->obj_type == SDB_METRIC) {
518 if ((! st->store_type) != (! st->store_id)) {
519 sdb_strbuf_sprintf(errbuf, "Incomplete metric store %s %s "
520 "in STORE METRIC command",
521 st->store_type ? st->store_type : "<unknown>",
522 st->store_id ? st->store_id : "<unknown>");
523 return -1;
524 }
525 }
526 else if (st->store_type || st->store_id) {
527 sdb_strbuf_sprintf(errbuf, "Unexpected metric store %s %s "
528 "in STORE %s command",
529 st->store_type ? st->store_type : "<unknown>",
530 st->store_id ? st->store_id : "<unknown>",
531 SDB_STORE_TYPE_TO_NAME(st->obj_type));
532 return -1;
533 }
535 if ((! (st->obj_type == SDB_ATTRIBUTE))
536 && (st->value.type != SDB_TYPE_NULL)) {
537 char v_str[sdb_data_format(&st->value, NULL, 0, SDB_DOUBLE_QUOTED) + 1];
538 sdb_data_format(&st->value, v_str, sizeof(v_str), SDB_DOUBLE_QUOTED);
539 sdb_strbuf_sprintf(errbuf, "Unexpected value %s in STORE %s command",
540 v_str, SDB_STORE_TYPE_TO_NAME(st->obj_type));
541 return -1;
542 }
543 return 0;
544 } /* analyze_store */
546 static int
547 analyze_timeseries(sdb_ast_timeseries_t *ts, sdb_strbuf_t *errbuf)
548 {
549 if (! ts->hostname) {
550 sdb_strbuf_sprintf(errbuf, "Missing hostname in STORE command");
551 return -1;
552 }
553 if (! ts->metric) {
554 sdb_strbuf_sprintf(errbuf, "Missing metric name in STORE command");
555 return -1;
556 }
557 if (ts->end <= ts->start) {
558 char start_str[64], end_str[64];
559 sdb_strftime(start_str, sizeof(start_str), "%F %T Tz", ts->start);
560 sdb_strftime(end_str, sizeof(end_str), "%F %T Tz", ts->end);
561 sdb_strbuf_sprintf(errbuf, "Start time (%s) greater than "
562 "end time (%s) in STORE command", start_str, end_str);
563 return -1;
564 }
565 return 0;
566 } /* analyze_timeseries */
568 /*
569 * public API
570 */
572 int
573 sdb_parser_analyze(sdb_ast_node_t *node, sdb_strbuf_t *errbuf)
574 {
575 if (! node) {
576 sdb_strbuf_sprintf(errbuf, "Empty AST node");
577 return -1;
578 }
580 /* top-level nodes don't have a type */
581 node->data_type = -1;
583 if (node->type == SDB_AST_TYPE_FETCH)
584 return analyze_fetch(SDB_AST_FETCH(node), errbuf);
585 else if (node->type == SDB_AST_TYPE_LIST)
586 return analyze_list(SDB_AST_LIST(node), errbuf);
587 else if (node->type == SDB_AST_TYPE_LOOKUP)
588 return analyze_lookup(SDB_AST_LOOKUP(node), errbuf);
589 else if (node->type == SDB_AST_TYPE_STORE)
590 return analyze_store(SDB_AST_STORE(node), errbuf);
591 else if (node->type == SDB_AST_TYPE_TIMESERIES)
592 return analyze_timeseries(SDB_AST_TIMESERIES(node), errbuf);
594 sdb_strbuf_sprintf(errbuf, "Invalid top-level AST node "
595 "of type %#x", node->type);
596 return -1;
597 } /* sdb_parser_analyze */
599 int
600 sdb_parser_analyze_conditional(sdb_ast_node_t *node, sdb_strbuf_t *errbuf)
601 {
602 if (! node) {
603 sdb_strbuf_sprintf(errbuf, "Empty conditional node");
604 return -1;
605 }
606 if (! SDB_AST_IS_LOGICAL(node)) {
607 sdb_strbuf_sprintf(errbuf, "Not a conditional node (got %s)",
608 SDB_AST_TYPE_TO_STRING(node));
609 return -1;
610 }
611 return analyze_node(UNSPEC_CONTEXT, node, errbuf);
612 } /* sdb_parser_analyze_conditional */
614 int
615 sdb_parser_analyze_arith(sdb_ast_node_t *node, sdb_strbuf_t *errbuf)
616 {
617 if (! node) {
618 sdb_strbuf_sprintf(errbuf, "Empty arithmetic node");
619 return -1;
620 }
621 if (! SDB_AST_IS_ARITHMETIC(node)) {
622 sdb_strbuf_sprintf(errbuf, "Not an arithmetic node (got %s)",
623 SDB_AST_TYPE_TO_STRING(node));
624 return -1;
625 }
626 return analyze_node(UNSPEC_CONTEXT, node, errbuf);
627 } /* sdb_parser_analyze_arith */
629 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */