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 case SDB_AST_ISTRUE:
159 case SDB_AST_ISFALSE:
160 if (analyze_node(context, op->right, errbuf))
161 return -1;
162 break;
164 case SDB_AST_IN:
165 if (analyze_node(context, op->left, errbuf))
166 return -1;
167 if (analyze_node(context, op->right, errbuf))
168 return -1;
170 if ((op->right->data_type > 0) && (! (op->right->data_type & SDB_TYPE_ARRAY))) {
171 op_error(errbuf, op, "array expected");
172 return -1;
173 }
174 /* the left operand may be a scalar or an array but the element
175 * type has to match */
176 if ((op->left->data_type > 0) && (op->right->data_type > 0)
177 && ((op->left->data_type & 0xff) != (op->right->data_type & 0xff))) {
178 op_error(errbuf, op, "type mismatch");
179 return -1;
180 }
181 break;
183 default:
184 sdb_strbuf_sprintf(errbuf, "Unknown operand type %d", op->kind);
185 return -1;
186 }
187 return 0;
188 } /* analyze_logical */
190 static int
191 analyze_arith(int context, sdb_ast_op_t *op, sdb_strbuf_t *errbuf)
192 {
193 if (analyze_node(context, op->left, errbuf))
194 return -1;
195 if (analyze_node(context, op->right, errbuf))
196 return -1;
197 SDB_AST_NODE(op)->data_type = sdb_data_expr_type(SDB_AST_OP_TO_DATA_OP(op->kind),
198 op->left->data_type, op->right->data_type);
200 if ((op->left->data_type > 0) && (op->right->data_type > 0)
201 && (SDB_AST_NODE(op)->data_type <= 0)) {
202 op_error(errbuf, op, "type mismatch");
203 return -1;
204 }
206 /* TODO: replace constant arithmetic operations with a constant value */
207 return 0;
208 } /* analyze_arith */
210 static int
211 analyze_iter(int context, sdb_ast_iter_t *iter, sdb_strbuf_t *errbuf)
212 {
213 sdb_ast_const_t c = SDB_AST_CONST_INIT;
214 int iter_context = context;
215 int status;
217 if (iter->iter->type == SDB_AST_TYPE_TYPED)
218 iter_context = SDB_AST_TYPED(iter->iter)->type;
220 if (analyze_node(iter_context, iter->iter, errbuf))
221 return -1;
222 /* TODO: support other setups as well */
223 assert((iter->expr->type == SDB_AST_TYPE_OPERATOR)
224 && (! SDB_AST_OP(iter->expr)->left));
225 /* determine the data-type for better error messages */
226 analyze_node(iter_context, SDB_AST_OP(iter->expr)->right, NULL);
228 if (iter->iter->type == SDB_AST_TYPE_TYPED) {
229 int iter_type = SDB_AST_TYPED(iter->iter)->type;
231 c.value.type = iter->iter->data_type;
233 if (iter_type == SDB_ATTRIBUTE) {
234 /* attributes are always iterable */
235 }
236 else if ((context != SDB_HOST) && (context != SDB_SERVICE)
237 && (context != SDB_METRIC) && (context != UNSPEC_CONTEXT)) {
238 iter_error(errbuf, iter, "%s not iterable in %s context",
239 SDB_STORE_TYPE_TO_NAME(iter_type),
240 SDB_STORE_TYPE_TO_NAME(context));
241 return -1;
242 }
244 if ((context == iter_type)
245 || ((iter_type != SDB_SERVICE)
246 && (iter_type != SDB_METRIC)
247 && (iter_type != SDB_ATTRIBUTE))
248 || ((context == SDB_SERVICE)
249 && (iter_type == SDB_METRIC))
250 || ((context == SDB_METRIC)
251 && (iter_type == SDB_SERVICE))) {
252 iter_error(errbuf, iter, "%s not iterable in %s context",
253 SDB_STORE_TYPE_TO_NAME(iter_type),
254 SDB_STORE_TYPE_TO_NAME(context));
255 return -1;
256 }
257 }
258 else if (iter->iter->type == SDB_AST_TYPE_VALUE) {
259 int iter_type = SDB_AST_VALUE(iter->iter)->type;
261 c.value.type = iter->iter->data_type & 0xff;
263 if (iter_type != SDB_FIELD_BACKEND) {
264 iter_error(errbuf, iter, "%s not iterable in %s context",
265 (iter_type == SDB_ATTRIBUTE)
266 ? "attribute"
267 : SDB_FIELD_TO_NAME(iter_type),
268 SDB_STORE_TYPE_TO_NAME(context));
269 return -1;
270 }
271 }
272 else if (iter->iter->type == SDB_AST_TYPE_CONST) {
273 c.value.type = iter->iter->data_type & 0xff;
275 if (! (SDB_AST_CONST(iter->iter)->value.type & SDB_TYPE_ARRAY)) {
276 iter_error(errbuf, iter, "%s not iterable",
277 SDB_TYPE_TO_STRING(SDB_AST_CONST(iter->iter)->value.type));
278 return -1;
279 }
280 }
281 else {
282 /* TODO: if we know the data-type of iter->iter and it's an array,
283 * we should support an iterator for it as well */
284 iter_error(errbuf, iter, "%s expression not iterable",
285 SDB_AST_TYPE_TO_STRING(iter->iter));
286 return -1;
287 }
289 SDB_AST_OP(iter->expr)->left = SDB_AST_NODE(&c);
290 status = analyze_node(context, iter->expr, errbuf);
291 SDB_AST_OP(iter->expr)->left = NULL;
292 if (status)
293 return -1;
294 return 0;
295 } /* analyze_iter */
297 static int
298 analyze_const(int __attribute__((unused)) context, sdb_ast_const_t *c,
299 sdb_strbuf_t __attribute__((unused)) *errbuf)
300 {
301 SDB_AST_NODE(c)->data_type = c->value.type;
302 return 0;
303 } /* analyze_const */
305 static int
306 analyze_value(int context, sdb_ast_value_t *v, sdb_strbuf_t *errbuf)
307 {
308 if (v->type != SDB_ATTRIBUTE)
309 SDB_AST_NODE(v)->data_type = SDB_FIELD_TYPE(v->type);
311 if ((v->type != SDB_ATTRIBUTE) && v->name) {
312 sdb_strbuf_sprintf(errbuf, "Invalid expression %s[%s]",
313 SDB_FIELD_TO_NAME(v->type), v->name);
314 return -1;
315 }
316 else if ((v->type == SDB_ATTRIBUTE) && (! v->name)) {
317 sdb_strbuf_sprintf(errbuf, "Invalid expression attribute[] "
318 "(missing name)");
319 return -1;
320 }
322 if ((context != SDB_ATTRIBUTE) && (v->type == SDB_FIELD_VALUE)) {
323 sdb_strbuf_sprintf(errbuf, "Invalid expression %s.value",
324 SDB_FIELD_TO_NAME(v->type));
325 return -1;
326 }
327 return 0;
328 } /* analyze_value */
330 static int
331 analyze_typed(int context, sdb_ast_typed_t *t, sdb_strbuf_t *errbuf)
332 {
333 if ((t->expr->type != SDB_AST_TYPE_VALUE)
334 && (t->expr->type != SDB_AST_TYPE_TYPED)) {
335 sdb_strbuf_sprintf(errbuf, "Invalid expression %s.%s",
336 SDB_STORE_TYPE_TO_NAME(t->type),
337 SDB_AST_TYPE_TO_STRING(t->expr));
338 return -1;
339 }
340 if (analyze_node(t->type, t->expr, errbuf))
341 return -1;
342 SDB_AST_NODE(t)->data_type = t->expr->data_type;
344 if ((t->type != SDB_ATTRIBUTE) && (! VALID_OBJ_TYPE(t->type))) {
345 sdb_strbuf_sprintf(errbuf, "Invalid expression %#x.%s",
346 t->type, SDB_AST_TYPE_TO_STRING(t->expr));
347 return -1;
348 }
350 /* self-references are allowed and services and metrics may reference
351 * their parent host; everything may reference attributes */
352 if ((context != t->type) && (context > 0)
353 && (((context != SDB_SERVICE) && (context != SDB_METRIC))
354 || (t->type != SDB_HOST))
355 && (t->type != SDB_ATTRIBUTE)) {
356 sdb_strbuf_sprintf(errbuf, "Invalid expression %s.%s in %s context",
357 SDB_STORE_TYPE_TO_NAME(t->type),
358 SDB_AST_TYPE_TO_STRING(t->expr),
359 context == -1 ? "generic" : SDB_STORE_TYPE_TO_NAME(context));
360 return -1;
361 }
362 return 0;
363 } /* analyze_typed */
365 static int
366 analyze_node(int context, sdb_ast_node_t *node, sdb_strbuf_t *errbuf)
367 {
368 if (! node) {
369 sdb_strbuf_sprintf(errbuf, "Empty AST node");
370 return -1;
371 }
373 /* unknown by default */
374 node->data_type = -1;
376 if ((node->type == SDB_AST_TYPE_OPERATOR)
377 && (SDB_AST_IS_LOGICAL(node)))
378 return analyze_logical(context, SDB_AST_OP(node), errbuf);
379 else if ((node->type == SDB_AST_TYPE_OPERATOR)
380 && (SDB_AST_IS_ARITHMETIC(node)))
381 return analyze_arith(context, SDB_AST_OP(node), errbuf);
382 else if (node->type == SDB_AST_TYPE_ITERATOR)
383 return analyze_iter(context, SDB_AST_ITER(node), errbuf);
384 else if (node->type == SDB_AST_TYPE_CONST)
385 return analyze_const(context, SDB_AST_CONST(node), errbuf);
386 else if (node->type == SDB_AST_TYPE_VALUE)
387 return analyze_value(context, SDB_AST_VALUE(node), errbuf);
388 else if (node->type == SDB_AST_TYPE_TYPED)
389 return analyze_typed(context, SDB_AST_TYPED(node), errbuf);
391 sdb_strbuf_sprintf(errbuf, "Invalid expression node "
392 "of type %#x", node->type);
393 return -1;
394 } /* analyze_node */
396 /*
397 * top level / command nodes
398 */
400 static int
401 analyze_fetch(sdb_ast_fetch_t *fetch, sdb_strbuf_t *errbuf)
402 {
403 if (! VALID_OBJ_TYPE(fetch->obj_type)) {
404 sdb_strbuf_sprintf(errbuf, "Invalid object type %#x "
405 "in FETCH command", fetch->obj_type);
406 return -1;
407 }
408 if (! fetch->name) {
409 sdb_strbuf_sprintf(errbuf, "Missing object name in "
410 "FETCH %s command", SDB_STORE_TYPE_TO_NAME(fetch->obj_type));
411 return -1;
412 }
414 if ((fetch->obj_type == SDB_HOST) && fetch->hostname) {
415 sdb_strbuf_sprintf(errbuf, "Unexpected parent hostname '%s' "
416 "in FETCH HOST command", fetch->hostname);
417 return -1;
418 }
419 else if ((fetch->obj_type != SDB_HOST) && (! fetch->hostname)) {
420 sdb_strbuf_sprintf(errbuf, "Missing parent hostname for '%s' "
421 "in FETCH %s command", fetch->name,
422 SDB_STORE_TYPE_TO_NAME(fetch->obj_type));
423 return -1;
424 }
426 if (fetch->filter)
427 return analyze_node(FILTER_CONTEXT, fetch->filter, errbuf);
428 return 0;
429 } /* analyze_fetch */
431 static int
432 analyze_list(sdb_ast_list_t *list, sdb_strbuf_t *errbuf)
433 {
434 if (! VALID_OBJ_TYPE(list->obj_type)) {
435 sdb_strbuf_sprintf(errbuf, "Invalid object type %#x "
436 "in LIST command", list->obj_type);
437 return -1;
438 }
439 if (list->filter)
440 return analyze_node(FILTER_CONTEXT, list->filter, errbuf);
441 return 0;
442 } /* analyze_list */
444 static int
445 analyze_lookup(sdb_ast_lookup_t *lookup, sdb_strbuf_t *errbuf)
446 {
447 if (! VALID_OBJ_TYPE(lookup->obj_type)) {
448 sdb_strbuf_sprintf(errbuf, "Invalid object type %#x "
449 "in LOOKUP command", lookup->obj_type);
450 return -1;
451 }
452 if (lookup->matcher)
453 if (analyze_node(lookup->obj_type, lookup->matcher, errbuf))
454 return -1;
455 if (lookup->filter)
456 return analyze_node(FILTER_CONTEXT, lookup->filter, errbuf);
457 return 0;
458 } /* analyze_lookup */
460 static int
461 analyze_store(sdb_ast_store_t *st, sdb_strbuf_t *errbuf)
462 {
463 if ((st->obj_type != SDB_ATTRIBUTE)
464 && (! VALID_OBJ_TYPE(st->obj_type))) {
465 sdb_strbuf_sprintf(errbuf, "Invalid object type %#x "
466 "in STORE command", st->obj_type);
467 return -1;
468 }
469 if (! st->name) {
470 sdb_strbuf_sprintf(errbuf, "Missing object name in "
471 "STORE %s command", SDB_STORE_TYPE_TO_NAME(st->obj_type));
472 return -1;
473 }
475 if ((st->obj_type == SDB_HOST) && st->hostname) {
476 sdb_strbuf_sprintf(errbuf, "Unexpected parent hostname '%s' "
477 "in STORE HOST command", st->hostname);
478 return -1;
479 }
480 else if ((st->obj_type != SDB_HOST) && (! st->hostname)) {
481 sdb_strbuf_sprintf(errbuf, "Missing parent hostname for '%s' "
482 "in STORE %s command", st->name,
483 SDB_STORE_TYPE_TO_NAME(st->obj_type));
484 return -1;
485 }
487 if (st->obj_type == SDB_ATTRIBUTE) {
488 if ((st->parent_type <= 0) && st->parent) {
489 sdb_strbuf_sprintf(errbuf, "Unexpected parent hostname '%s' "
490 "in STORE %s command", st->parent,
491 SDB_STORE_TYPE_TO_NAME(st->obj_type));
492 return -1;
493 }
494 else if (st->parent_type > 0) {
495 if (! VALID_OBJ_TYPE(st->parent_type)) {
496 sdb_strbuf_sprintf(errbuf, "Invalid parent type %#x "
497 "in STORE %s command", st->parent_type,
498 SDB_STORE_TYPE_TO_NAME(st->obj_type));
499 return -1;
500 }
501 if (! st->parent) {
502 sdb_strbuf_sprintf(errbuf, "Missing %s parent name "
503 "in STORE %s command",
504 SDB_STORE_TYPE_TO_NAME(st->parent_type),
505 SDB_STORE_TYPE_TO_NAME(st->obj_type));
506 return -1;
507 }
508 }
509 }
510 else if ((st->parent_type > 0) || st->parent) {
511 sdb_strbuf_sprintf(errbuf, "Unexpected %s parent name '%s' "
512 "in STORE %s command",
513 SDB_STORE_TYPE_TO_NAME(st->parent_type),
514 st->parent ? st->parent : "<unknown>",
515 SDB_STORE_TYPE_TO_NAME(st->obj_type));
516 return -1;
517 }
519 if (st->obj_type == SDB_METRIC) {
520 if ((! st->store_type) != (! st->store_id)) {
521 sdb_strbuf_sprintf(errbuf, "Incomplete metric store %s %s "
522 "in STORE METRIC command",
523 st->store_type ? st->store_type : "<unknown>",
524 st->store_id ? st->store_id : "<unknown>");
525 return -1;
526 }
527 }
528 else if (st->store_type || st->store_id) {
529 sdb_strbuf_sprintf(errbuf, "Unexpected metric store %s %s "
530 "in STORE %s command",
531 st->store_type ? st->store_type : "<unknown>",
532 st->store_id ? st->store_id : "<unknown>",
533 SDB_STORE_TYPE_TO_NAME(st->obj_type));
534 return -1;
535 }
537 if ((! (st->obj_type == SDB_ATTRIBUTE))
538 && (st->value.type != SDB_TYPE_NULL)) {
539 char v_str[sdb_data_format(&st->value, NULL, 0, SDB_DOUBLE_QUOTED) + 1];
540 sdb_data_format(&st->value, v_str, sizeof(v_str), SDB_DOUBLE_QUOTED);
541 sdb_strbuf_sprintf(errbuf, "Unexpected value %s in STORE %s command",
542 v_str, SDB_STORE_TYPE_TO_NAME(st->obj_type));
543 return -1;
544 }
545 return 0;
546 } /* analyze_store */
548 static int
549 analyze_timeseries(sdb_ast_timeseries_t *ts, sdb_strbuf_t *errbuf)
550 {
551 if (! ts->hostname) {
552 sdb_strbuf_sprintf(errbuf, "Missing hostname in STORE command");
553 return -1;
554 }
555 if (! ts->metric) {
556 sdb_strbuf_sprintf(errbuf, "Missing metric name in STORE command");
557 return -1;
558 }
559 if (ts->end <= ts->start) {
560 char start_str[64], end_str[64];
561 sdb_strftime(start_str, sizeof(start_str), "%F %T Tz", ts->start);
562 sdb_strftime(end_str, sizeof(end_str), "%F %T Tz", ts->end);
563 sdb_strbuf_sprintf(errbuf, "Start time (%s) greater than "
564 "end time (%s) in STORE command", start_str, end_str);
565 return -1;
566 }
567 return 0;
568 } /* analyze_timeseries */
570 /*
571 * public API
572 */
574 int
575 sdb_parser_analyze(sdb_ast_node_t *node, sdb_strbuf_t *errbuf)
576 {
577 if (! node) {
578 sdb_strbuf_sprintf(errbuf, "Empty AST node");
579 return -1;
580 }
582 /* top-level nodes don't have a type */
583 node->data_type = -1;
585 if (node->type == SDB_AST_TYPE_FETCH)
586 return analyze_fetch(SDB_AST_FETCH(node), errbuf);
587 else if (node->type == SDB_AST_TYPE_LIST)
588 return analyze_list(SDB_AST_LIST(node), errbuf);
589 else if (node->type == SDB_AST_TYPE_LOOKUP)
590 return analyze_lookup(SDB_AST_LOOKUP(node), errbuf);
591 else if (node->type == SDB_AST_TYPE_STORE)
592 return analyze_store(SDB_AST_STORE(node), errbuf);
593 else if (node->type == SDB_AST_TYPE_TIMESERIES)
594 return analyze_timeseries(SDB_AST_TIMESERIES(node), errbuf);
596 sdb_strbuf_sprintf(errbuf, "Invalid top-level AST node "
597 "of type %#x", node->type);
598 return -1;
599 } /* sdb_parser_analyze */
601 int
602 sdb_parser_analyze_conditional(sdb_ast_node_t *node, sdb_strbuf_t *errbuf)
603 {
604 if (! node) {
605 sdb_strbuf_sprintf(errbuf, "Empty conditional node");
606 return -1;
607 }
608 if (! SDB_AST_IS_LOGICAL(node)) {
609 sdb_strbuf_sprintf(errbuf, "Not a conditional node (got %s)",
610 SDB_AST_TYPE_TO_STRING(node));
611 return -1;
612 }
613 return analyze_node(UNSPEC_CONTEXT, node, errbuf);
614 } /* sdb_parser_analyze_conditional */
616 int
617 sdb_parser_analyze_arith(sdb_ast_node_t *node, sdb_strbuf_t *errbuf)
618 {
619 if (! node) {
620 sdb_strbuf_sprintf(errbuf, "Empty arithmetic node");
621 return -1;
622 }
623 if (! SDB_AST_IS_ARITHMETIC(node)) {
624 sdb_strbuf_sprintf(errbuf, "Not an arithmetic node (got %s)",
625 SDB_AST_TYPE_TO_STRING(node));
626 return -1;
627 }
628 return analyze_node(UNSPEC_CONTEXT, node, errbuf);
629 } /* sdb_parser_analyze_arith */
631 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */