Commit | Line | Data |
---|---|---|
7b33a0e0 PP |
1 | /* |
2 | * Copyright 2018 Philippe Proulx <pproulx@efficios.com> | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
5 | * of this software and associated documentation files (the "Software"), to deal | |
6 | * in the Software without restriction, including without limitation the rights | |
7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
8 | * copies of the Software, and to permit persons to whom the Software is | |
9 | * furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice shall be included in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
20 | * SOFTWARE. | |
21 | */ | |
22 | ||
b03487ab | 23 | #define BT_LOG_TAG "LIB/RESOLVE-FIELD-PATH" |
1633ef46 | 24 | #include "lib/logging.h" |
7b33a0e0 | 25 | |
57952005 MJ |
26 | #include "lib/assert-pre.h" |
27 | #include "common/assert.h" | |
71c5da58 | 28 | #include <babeltrace2/trace-ir/field-path-const.h> |
7b33a0e0 PP |
29 | #include <limits.h> |
30 | #include <stdint.h> | |
31 | #include <inttypes.h> | |
32 | #include <glib.h> | |
33 | ||
57952005 MJ |
34 | #include "field-class.h" |
35 | #include "field-path.h" | |
36 | #include "resolve-field-path.h" | |
37 | ||
7b33a0e0 | 38 | static |
939190b3 PP |
39 | bool find_field_class_recursive(struct bt_field_class *fc, |
40 | struct bt_field_class *tgt_fc, struct bt_field_path *field_path) | |
7b33a0e0 PP |
41 | { |
42 | bool found = false; | |
43 | ||
939190b3 | 44 | if (tgt_fc == fc) { |
7b33a0e0 PP |
45 | found = true; |
46 | goto end; | |
47 | } | |
48 | ||
af0c18e3 | 49 | switch (fc->type) { |
467673c1 PP |
50 | case BT_FIELD_CLASS_TYPE_OPTION_WITHOUT_SELECTOR: |
51 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR: | |
52 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR: | |
53 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR: | |
247fa9e3 PP |
54 | { |
55 | struct bt_field_class_option *opt_fc = (void *) fc; | |
247fa9e3 PP |
56 | struct bt_field_path_item item = { |
57 | .type = BT_FIELD_PATH_ITEM_TYPE_CURRENT_OPTION_CONTENT, | |
58 | .index = UINT64_C(-1), | |
59 | }; | |
60 | ||
61 | bt_field_path_append_item(field_path, &item); | |
62 | found = find_field_class_recursive(opt_fc->content_fc, | |
63 | tgt_fc, field_path); | |
64 | if (found) { | |
65 | goto end; | |
66 | } | |
67 | ||
68 | bt_field_path_remove_last_item(field_path); | |
69 | break; | |
70 | } | |
af0c18e3 | 71 | case BT_FIELD_CLASS_TYPE_STRUCTURE: |
02b61fe0 | 72 | case BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR: |
0822832b PP |
73 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR: |
74 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR: | |
7b33a0e0 | 75 | { |
939190b3 PP |
76 | struct bt_field_class_named_field_class_container *container_fc = |
77 | (void *) fc; | |
7b33a0e0 PP |
78 | uint64_t i; |
79 | ||
939190b3 PP |
80 | for (i = 0; i < container_fc->named_fcs->len; i++) { |
81 | struct bt_named_field_class *named_fc = | |
02b61fe0 | 82 | container_fc->named_fcs->pdata[i]; |
1d4afa5f PP |
83 | struct bt_field_path_item item = { |
84 | .type = BT_FIELD_PATH_ITEM_TYPE_INDEX, | |
85 | .index = i, | |
86 | }; | |
7b33a0e0 | 87 | |
1d4afa5f | 88 | bt_field_path_append_item(field_path, &item); |
939190b3 PP |
89 | found = find_field_class_recursive(named_fc->fc, |
90 | tgt_fc, field_path); | |
7b33a0e0 PP |
91 | if (found) { |
92 | goto end; | |
93 | } | |
94 | ||
1d4afa5f | 95 | bt_field_path_remove_last_item(field_path); |
7b33a0e0 PP |
96 | } |
97 | ||
98 | break; | |
99 | } | |
af0c18e3 PP |
100 | case BT_FIELD_CLASS_TYPE_STATIC_ARRAY: |
101 | case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY: | |
7b33a0e0 | 102 | { |
939190b3 | 103 | struct bt_field_class_array *array_fc = (void *) fc; |
1d4afa5f PP |
104 | struct bt_field_path_item item = { |
105 | .type = BT_FIELD_PATH_ITEM_TYPE_CURRENT_ARRAY_ELEMENT, | |
106 | .index = UINT64_C(-1), | |
107 | }; | |
7b33a0e0 | 108 | |
1d4afa5f | 109 | bt_field_path_append_item(field_path, &item); |
939190b3 PP |
110 | found = find_field_class_recursive(array_fc->element_fc, |
111 | tgt_fc, field_path); | |
1d4afa5f PP |
112 | if (found) { |
113 | goto end; | |
114 | } | |
115 | ||
116 | bt_field_path_remove_last_item(field_path); | |
7b33a0e0 PP |
117 | break; |
118 | } | |
119 | default: | |
120 | break; | |
121 | } | |
122 | ||
123 | end: | |
124 | return found; | |
125 | } | |
126 | ||
127 | static | |
939190b3 | 128 | int find_field_class(struct bt_field_class *root_fc, |
056995e5 | 129 | enum bt_field_path_scope root_scope, struct bt_field_class *tgt_fc, |
7b33a0e0 PP |
130 | struct bt_field_path **ret_field_path) |
131 | { | |
132 | int ret = 0; | |
133 | struct bt_field_path *field_path = NULL; | |
134 | ||
939190b3 | 135 | if (!root_fc) { |
7b33a0e0 PP |
136 | goto end; |
137 | } | |
138 | ||
139 | field_path = bt_field_path_create(); | |
140 | if (!field_path) { | |
141 | ret = -1; | |
142 | goto end; | |
143 | } | |
144 | ||
145 | field_path->root = root_scope; | |
939190b3 | 146 | if (!find_field_class_recursive(root_fc, tgt_fc, field_path)) { |
7b33a0e0 | 147 | /* Not found here */ |
8138bfe1 | 148 | BT_OBJECT_PUT_REF_AND_RESET(field_path); |
7b33a0e0 PP |
149 | } |
150 | ||
151 | end: | |
152 | *ret_field_path = field_path; | |
153 | return ret; | |
154 | } | |
155 | ||
156 | static | |
939190b3 | 157 | struct bt_field_path *find_field_class_in_ctx(struct bt_field_class *fc, |
7b33a0e0 PP |
158 | struct bt_resolve_field_path_context *ctx) |
159 | { | |
160 | struct bt_field_path *field_path = NULL; | |
161 | int ret; | |
162 | ||
056995e5 | 163 | ret = find_field_class(ctx->packet_context, BT_FIELD_PATH_SCOPE_PACKET_CONTEXT, |
939190b3 | 164 | fc, &field_path); |
7b33a0e0 PP |
165 | if (ret || field_path) { |
166 | goto end; | |
167 | } | |
168 | ||
939190b3 | 169 | ret = find_field_class(ctx->event_common_context, |
056995e5 | 170 | BT_FIELD_PATH_SCOPE_EVENT_COMMON_CONTEXT, fc, &field_path); |
7b33a0e0 PP |
171 | if (ret || field_path) { |
172 | goto end; | |
173 | } | |
174 | ||
939190b3 | 175 | ret = find_field_class(ctx->event_specific_context, |
056995e5 | 176 | BT_FIELD_PATH_SCOPE_EVENT_SPECIFIC_CONTEXT, fc, &field_path); |
7b33a0e0 PP |
177 | if (ret || field_path) { |
178 | goto end; | |
179 | } | |
180 | ||
056995e5 | 181 | ret = find_field_class(ctx->event_payload, BT_FIELD_PATH_SCOPE_EVENT_PAYLOAD, |
939190b3 | 182 | fc, &field_path); |
7b33a0e0 PP |
183 | if (ret || field_path) { |
184 | goto end; | |
185 | } | |
186 | ||
187 | end: | |
188 | return field_path; | |
189 | } | |
190 | ||
fa6cfec3 | 191 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 PP |
192 | static inline |
193 | bool target_is_before_source(struct bt_field_path *src_field_path, | |
194 | struct bt_field_path *tgt_field_path) | |
195 | { | |
196 | bool is_valid = true; | |
197 | uint64_t src_i = 0, tgt_i = 0; | |
198 | ||
199 | if (tgt_field_path->root < src_field_path->root) { | |
200 | goto end; | |
201 | } | |
202 | ||
203 | if (tgt_field_path->root > src_field_path->root) { | |
204 | is_valid = false; | |
205 | goto end; | |
206 | } | |
207 | ||
208 | BT_ASSERT(tgt_field_path->root == src_field_path->root); | |
209 | ||
1d4afa5f PP |
210 | for (src_i = 0, tgt_i = 0; src_i < src_field_path->items->len && |
211 | tgt_i < tgt_field_path->items->len; src_i++, tgt_i++) { | |
212 | struct bt_field_path_item *src_fp_item = | |
213 | bt_field_path_borrow_item_by_index_inline( | |
214 | src_field_path, src_i); | |
215 | struct bt_field_path_item *tgt_fp_item = | |
216 | bt_field_path_borrow_item_by_index_inline( | |
217 | tgt_field_path, tgt_i); | |
218 | ||
219 | if (src_fp_item->type == BT_FIELD_PATH_ITEM_TYPE_INDEX && | |
220 | tgt_fp_item->type == BT_FIELD_PATH_ITEM_TYPE_INDEX) { | |
221 | if (tgt_fp_item->index > src_fp_item->index) { | |
222 | is_valid = false; | |
223 | goto end; | |
224 | } | |
7b33a0e0 PP |
225 | } |
226 | ||
227 | src_i++; | |
228 | tgt_i++; | |
229 | } | |
230 | ||
231 | end: | |
232 | return is_valid; | |
233 | } | |
234 | ||
fa6cfec3 | 235 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 | 236 | static inline |
939190b3 | 237 | struct bt_field_class *borrow_root_field_class( |
056995e5 | 238 | struct bt_resolve_field_path_context *ctx, enum bt_field_path_scope scope) |
7b33a0e0 PP |
239 | { |
240 | switch (scope) { | |
056995e5 | 241 | case BT_FIELD_PATH_SCOPE_PACKET_CONTEXT: |
7b33a0e0 | 242 | return ctx->packet_context; |
056995e5 | 243 | case BT_FIELD_PATH_SCOPE_EVENT_COMMON_CONTEXT: |
7b33a0e0 | 244 | return ctx->event_common_context; |
056995e5 | 245 | case BT_FIELD_PATH_SCOPE_EVENT_SPECIFIC_CONTEXT: |
7b33a0e0 | 246 | return ctx->event_specific_context; |
056995e5 | 247 | case BT_FIELD_PATH_SCOPE_EVENT_PAYLOAD: |
7b33a0e0 PP |
248 | return ctx->event_payload; |
249 | default: | |
250 | abort(); | |
251 | } | |
252 | ||
253 | return NULL; | |
254 | } | |
255 | ||
fa6cfec3 | 256 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 | 257 | static inline |
1d4afa5f PP |
258 | struct bt_field_class *borrow_child_field_class( |
259 | struct bt_field_class *parent_fc, | |
260 | struct bt_field_path_item *fp_item) | |
7b33a0e0 | 261 | { |
939190b3 | 262 | struct bt_field_class *child_fc = NULL; |
7b33a0e0 | 263 | |
af0c18e3 | 264 | switch (parent_fc->type) { |
467673c1 PP |
265 | case BT_FIELD_CLASS_TYPE_OPTION_WITHOUT_SELECTOR: |
266 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR: | |
267 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR: | |
268 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR: | |
247fa9e3 PP |
269 | { |
270 | struct bt_field_class_option *opt_fc = (void *) parent_fc; | |
271 | ||
272 | BT_ASSERT(fp_item->type == | |
273 | BT_FIELD_PATH_ITEM_TYPE_CURRENT_OPTION_CONTENT); | |
274 | child_fc = opt_fc->content_fc; | |
275 | break; | |
276 | } | |
af0c18e3 | 277 | case BT_FIELD_CLASS_TYPE_STRUCTURE: |
02b61fe0 | 278 | case BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR: |
0822832b PP |
279 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR: |
280 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR: | |
7b33a0e0 | 281 | { |
02b61fe0 PP |
282 | struct bt_field_class_named_field_class_container *container_fc = |
283 | (void *) parent_fc; | |
1d4afa5f | 284 | struct bt_named_field_class *named_fc; |
7b33a0e0 | 285 | |
1d4afa5f | 286 | BT_ASSERT(fp_item->type == BT_FIELD_PATH_ITEM_TYPE_INDEX); |
02b61fe0 | 287 | named_fc = container_fc->named_fcs->pdata[fp_item->index]; |
939190b3 | 288 | child_fc = named_fc->fc; |
7b33a0e0 PP |
289 | break; |
290 | } | |
af0c18e3 PP |
291 | case BT_FIELD_CLASS_TYPE_STATIC_ARRAY: |
292 | case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY: | |
7b33a0e0 | 293 | { |
939190b3 | 294 | struct bt_field_class_array *array_fc = (void *) parent_fc; |
7b33a0e0 | 295 | |
1d4afa5f PP |
296 | BT_ASSERT(fp_item->type == |
297 | BT_FIELD_PATH_ITEM_TYPE_CURRENT_ARRAY_ELEMENT); | |
939190b3 | 298 | child_fc = array_fc->element_fc; |
7b33a0e0 PP |
299 | break; |
300 | } | |
301 | default: | |
302 | break; | |
303 | } | |
304 | ||
939190b3 | 305 | return child_fc; |
7b33a0e0 PP |
306 | } |
307 | ||
fa6cfec3 | 308 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 | 309 | static inline |
939190b3 | 310 | bool target_field_path_in_different_scope_has_struct_fc_only( |
7b33a0e0 PP |
311 | struct bt_field_path *src_field_path, |
312 | struct bt_field_path *tgt_field_path, | |
313 | struct bt_resolve_field_path_context *ctx) | |
314 | { | |
315 | bool is_valid = true; | |
316 | uint64_t i = 0; | |
939190b3 | 317 | struct bt_field_class *fc; |
7b33a0e0 PP |
318 | |
319 | if (src_field_path->root == tgt_field_path->root) { | |
320 | goto end; | |
321 | } | |
322 | ||
939190b3 | 323 | fc = borrow_root_field_class(ctx, tgt_field_path->root); |
7b33a0e0 | 324 | |
1d4afa5f PP |
325 | for (i = 0; i < tgt_field_path->items->len; i++) { |
326 | struct bt_field_path_item *fp_item = | |
327 | bt_field_path_borrow_item_by_index_inline( | |
328 | tgt_field_path, i); | |
7b33a0e0 | 329 | |
af0c18e3 PP |
330 | if (fc->type == BT_FIELD_CLASS_TYPE_STATIC_ARRAY || |
331 | fc->type == BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY || | |
467673c1 PP |
332 | fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITHOUT_SELECTOR || |
333 | fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR || | |
334 | fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR || | |
335 | fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR || | |
02b61fe0 | 336 | fc->type == BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR || |
0822832b PP |
337 | fc->type == BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR || |
338 | fc->type == BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR) { | |
7b33a0e0 PP |
339 | is_valid = false; |
340 | goto end; | |
341 | } | |
342 | ||
1d4afa5f PP |
343 | BT_ASSERT(fp_item->type == BT_FIELD_PATH_ITEM_TYPE_INDEX); |
344 | fc = borrow_child_field_class(fc, fp_item); | |
7b33a0e0 PP |
345 | } |
346 | ||
347 | end: | |
348 | return is_valid; | |
349 | } | |
350 | ||
fa6cfec3 | 351 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 | 352 | static inline |
939190b3 | 353 | bool lca_is_structure_field_class(struct bt_field_path *src_field_path, |
7b33a0e0 PP |
354 | struct bt_field_path *tgt_field_path, |
355 | struct bt_resolve_field_path_context *ctx) | |
356 | { | |
357 | bool is_valid = true; | |
939190b3 PP |
358 | struct bt_field_class *src_fc; |
359 | struct bt_field_class *tgt_fc; | |
360 | struct bt_field_class *prev_fc = NULL; | |
7b33a0e0 PP |
361 | uint64_t src_i = 0, tgt_i = 0; |
362 | ||
363 | if (src_field_path->root != tgt_field_path->root) { | |
364 | goto end; | |
365 | } | |
366 | ||
939190b3 PP |
367 | src_fc = borrow_root_field_class(ctx, src_field_path->root); |
368 | tgt_fc = borrow_root_field_class(ctx, tgt_field_path->root); | |
369 | BT_ASSERT(src_fc); | |
370 | BT_ASSERT(tgt_fc); | |
7b33a0e0 | 371 | |
1d4afa5f PP |
372 | for (src_i = 0, tgt_i = 0; src_i < src_field_path->items->len && |
373 | tgt_i < tgt_field_path->items->len; src_i++, tgt_i++) { | |
374 | struct bt_field_path_item *src_fp_item = | |
375 | bt_field_path_borrow_item_by_index_inline( | |
376 | src_field_path, src_i); | |
377 | struct bt_field_path_item *tgt_fp_item = | |
378 | bt_field_path_borrow_item_by_index_inline( | |
379 | tgt_field_path, tgt_i); | |
7b33a0e0 | 380 | |
939190b3 PP |
381 | if (src_fc != tgt_fc) { |
382 | if (!prev_fc) { | |
7b33a0e0 PP |
383 | /* |
384 | * This is correct: the LCA is the root | |
66fd07a5 PP |
385 | * scope field class, which must be a |
386 | * structure field class. | |
7b33a0e0 PP |
387 | */ |
388 | break; | |
389 | } | |
390 | ||
af0c18e3 | 391 | if (prev_fc->type != BT_FIELD_CLASS_TYPE_STRUCTURE) { |
7b33a0e0 PP |
392 | is_valid = false; |
393 | } | |
394 | ||
395 | break; | |
396 | } | |
397 | ||
939190b3 | 398 | prev_fc = src_fc; |
1d4afa5f PP |
399 | src_fc = borrow_child_field_class(src_fc, src_fp_item); |
400 | tgt_fc = borrow_child_field_class(tgt_fc, tgt_fp_item); | |
7b33a0e0 PP |
401 | } |
402 | ||
403 | end: | |
404 | return is_valid; | |
405 | } | |
406 | ||
fa6cfec3 | 407 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 | 408 | static inline |
939190b3 | 409 | bool lca_to_target_has_struct_fc_only(struct bt_field_path *src_field_path, |
7b33a0e0 PP |
410 | struct bt_field_path *tgt_field_path, |
411 | struct bt_resolve_field_path_context *ctx) | |
412 | { | |
413 | bool is_valid = true; | |
939190b3 PP |
414 | struct bt_field_class *src_fc; |
415 | struct bt_field_class *tgt_fc; | |
7b33a0e0 PP |
416 | uint64_t src_i = 0, tgt_i = 0; |
417 | ||
418 | if (src_field_path->root != tgt_field_path->root) { | |
419 | goto end; | |
420 | } | |
421 | ||
939190b3 PP |
422 | src_fc = borrow_root_field_class(ctx, src_field_path->root); |
423 | tgt_fc = borrow_root_field_class(ctx, tgt_field_path->root); | |
424 | BT_ASSERT(src_fc); | |
425 | BT_ASSERT(tgt_fc); | |
426 | BT_ASSERT(src_fc == tgt_fc); | |
7b33a0e0 PP |
427 | |
428 | /* Find LCA */ | |
1d4afa5f PP |
429 | for (src_i = 0, tgt_i = 0; src_i < src_field_path->items->len && |
430 | tgt_i < tgt_field_path->items->len; src_i++, tgt_i++) { | |
431 | struct bt_field_path_item *src_fp_item = | |
432 | bt_field_path_borrow_item_by_index_inline( | |
433 | src_field_path, src_i); | |
434 | struct bt_field_path_item *tgt_fp_item = | |
435 | bt_field_path_borrow_item_by_index_inline( | |
436 | tgt_field_path, tgt_i); | |
7b33a0e0 PP |
437 | |
438 | if (src_i != tgt_i) { | |
939190b3 | 439 | /* Next field class is different: LCA is `tgt_fc` */ |
7b33a0e0 PP |
440 | break; |
441 | } | |
442 | ||
1d4afa5f PP |
443 | src_fc = borrow_child_field_class(src_fc, src_fp_item); |
444 | tgt_fc = borrow_child_field_class(tgt_fc, tgt_fp_item); | |
7b33a0e0 PP |
445 | } |
446 | ||
939190b3 | 447 | /* Only structure field classes to the target */ |
1d4afa5f PP |
448 | for (; tgt_i < tgt_field_path->items->len; tgt_i++) { |
449 | struct bt_field_path_item *tgt_fp_item = | |
450 | bt_field_path_borrow_item_by_index_inline( | |
451 | tgt_field_path, tgt_i); | |
7b33a0e0 | 452 | |
af0c18e3 PP |
453 | if (tgt_fc->type == BT_FIELD_CLASS_TYPE_STATIC_ARRAY || |
454 | tgt_fc->type == BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY || | |
467673c1 PP |
455 | tgt_fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITHOUT_SELECTOR || |
456 | tgt_fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR || | |
457 | tgt_fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR || | |
458 | tgt_fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR || | |
02b61fe0 | 459 | tgt_fc->type == BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR || |
0822832b PP |
460 | tgt_fc->type == BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR || |
461 | tgt_fc->type == BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR) { | |
7b33a0e0 PP |
462 | is_valid = false; |
463 | goto end; | |
464 | } | |
465 | ||
1d4afa5f | 466 | tgt_fc = borrow_child_field_class(tgt_fc, tgt_fp_item); |
7b33a0e0 PP |
467 | } |
468 | ||
469 | end: | |
470 | return is_valid; | |
471 | } | |
472 | ||
fa6cfec3 | 473 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 | 474 | static inline |
939190b3 PP |
475 | bool field_path_is_valid(struct bt_field_class *src_fc, |
476 | struct bt_field_class *tgt_fc, | |
7b33a0e0 PP |
477 | struct bt_resolve_field_path_context *ctx) |
478 | { | |
479 | bool is_valid = true; | |
939190b3 PP |
480 | struct bt_field_path *src_field_path = find_field_class_in_ctx( |
481 | src_fc, ctx); | |
482 | struct bt_field_path *tgt_field_path = find_field_class_in_ctx( | |
483 | tgt_fc, ctx); | |
7b33a0e0 PP |
484 | |
485 | if (!src_field_path) { | |
fa6cfec3 | 486 | BT_ASSERT_PRE_DEV_MSG("Cannot find requesting field class in " |
939190b3 | 487 | "resolving context: %!+F", src_fc); |
7b33a0e0 PP |
488 | is_valid = false; |
489 | goto end; | |
490 | } | |
491 | ||
492 | if (!tgt_field_path) { | |
fa6cfec3 | 493 | BT_ASSERT_PRE_DEV_MSG("Cannot find target field class in " |
939190b3 | 494 | "resolving context: %!+F", tgt_fc); |
7b33a0e0 PP |
495 | is_valid = false; |
496 | goto end; | |
497 | } | |
498 | ||
499 | /* Target must be before source */ | |
500 | if (!target_is_before_source(src_field_path, tgt_field_path)) { | |
fa6cfec3 | 501 | BT_ASSERT_PRE_DEV_MSG("Target field class is located after " |
66fd07a5 | 502 | "requesting field class: %![req-fc-]+F, %![tgt-fc-]+F", |
939190b3 | 503 | src_fc, tgt_fc); |
7b33a0e0 PP |
504 | is_valid = false; |
505 | goto end; | |
506 | } | |
507 | ||
508 | /* | |
509 | * If target is in a different scope than source, there are no | |
939190b3 | 510 | * array or variant field classes on the way to the target. |
7b33a0e0 | 511 | */ |
939190b3 | 512 | if (!target_field_path_in_different_scope_has_struct_fc_only( |
7b33a0e0 | 513 | src_field_path, tgt_field_path, ctx)) { |
fa6cfec3 | 514 | BT_ASSERT_PRE_DEV_MSG("Target field class is located in a " |
66fd07a5 PP |
515 | "different scope than requesting field class, " |
516 | "but within an array or a variant field class: " | |
939190b3 PP |
517 | "%![req-fc-]+F, %![tgt-fc-]+F", |
518 | src_fc, tgt_fc); | |
7b33a0e0 PP |
519 | is_valid = false; |
520 | goto end; | |
521 | } | |
522 | ||
66fd07a5 | 523 | /* Same scope: LCA must be a structure field class */ |
939190b3 | 524 | if (!lca_is_structure_field_class(src_field_path, tgt_field_path, ctx)) { |
fa6cfec3 | 525 | BT_ASSERT_PRE_DEV_MSG("Lowest common ancestor of target and " |
66fd07a5 | 526 | "requesting field classes is not a structure field class: " |
939190b3 PP |
527 | "%![req-fc-]+F, %![tgt-fc-]+F", |
528 | src_fc, tgt_fc); | |
7b33a0e0 PP |
529 | is_valid = false; |
530 | goto end; | |
531 | } | |
532 | ||
533 | /* Same scope: path from LCA to target has no array/variant FTs */ | |
939190b3 | 534 | if (!lca_to_target_has_struct_fc_only(src_field_path, tgt_field_path, |
7b33a0e0 | 535 | ctx)) { |
fa6cfec3 | 536 | BT_ASSERT_PRE_DEV_MSG("Path from lowest common ancestor of target " |
66fd07a5 PP |
537 | "and requesting field classes to target field class " |
538 | "contains an array or a variant field class: " | |
939190b3 | 539 | "%![req-fc-]+F, %![tgt-fc-]+F", src_fc, tgt_fc); |
7b33a0e0 PP |
540 | is_valid = false; |
541 | goto end; | |
542 | } | |
543 | ||
544 | end: | |
8138bfe1 PP |
545 | bt_object_put_ref(src_field_path); |
546 | bt_object_put_ref(tgt_field_path); | |
7b33a0e0 PP |
547 | return is_valid; |
548 | } | |
549 | ||
550 | static | |
939190b3 PP |
551 | struct bt_field_path *resolve_field_path(struct bt_field_class *src_fc, |
552 | struct bt_field_class *tgt_fc, | |
7b33a0e0 PP |
553 | struct bt_resolve_field_path_context *ctx) |
554 | { | |
fa6cfec3 | 555 | BT_ASSERT_PRE_DEV(field_path_is_valid(src_fc, tgt_fc, ctx), |
66fd07a5 | 556 | "Invalid target field class: %![req-fc-]+F, %![tgt-fc-]+F", |
939190b3 PP |
557 | src_fc, tgt_fc); |
558 | return find_field_class_in_ctx(tgt_fc, ctx); | |
7b33a0e0 PP |
559 | } |
560 | ||
561 | BT_HIDDEN | |
939190b3 | 562 | int bt_resolve_field_paths(struct bt_field_class *fc, |
7b33a0e0 PP |
563 | struct bt_resolve_field_path_context *ctx) |
564 | { | |
565 | int ret = 0; | |
566 | ||
939190b3 | 567 | BT_ASSERT(fc); |
7b33a0e0 | 568 | |
939190b3 | 569 | /* Resolving part for dynamic array and variant field classes */ |
af0c18e3 | 570 | switch (fc->type) { |
467673c1 PP |
571 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR: |
572 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR: | |
573 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR: | |
247fa9e3 | 574 | { |
467673c1 | 575 | struct bt_field_class_option_with_selector *opt_fc = (void *) fc; |
247fa9e3 PP |
576 | |
577 | if (opt_fc->selector_fc) { | |
578 | BT_ASSERT(!opt_fc->selector_field_path); | |
579 | opt_fc->selector_field_path = resolve_field_path( | |
580 | fc, opt_fc->selector_fc, ctx); | |
581 | if (!opt_fc->selector_field_path) { | |
582 | ret = -1; | |
583 | goto end; | |
584 | } | |
585 | } | |
586 | ||
587 | break; | |
588 | } | |
af0c18e3 | 589 | case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY: |
7b33a0e0 | 590 | { |
60bbfc7c | 591 | struct bt_field_class_array_dynamic *dyn_array_fc = (void *) fc; |
7b33a0e0 | 592 | |
939190b3 PP |
593 | if (dyn_array_fc->length_fc) { |
594 | BT_ASSERT(!dyn_array_fc->length_field_path); | |
595 | dyn_array_fc->length_field_path = resolve_field_path( | |
596 | fc, dyn_array_fc->length_fc, ctx); | |
597 | if (!dyn_array_fc->length_field_path) { | |
7b33a0e0 PP |
598 | ret = -1; |
599 | goto end; | |
600 | } | |
601 | } | |
602 | ||
603 | break; | |
604 | } | |
0822832b PP |
605 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR: |
606 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR: | |
7b33a0e0 | 607 | { |
02b61fe0 PP |
608 | struct bt_field_class_variant_with_selector *var_fc = |
609 | (void *) fc; | |
939190b3 PP |
610 | |
611 | if (var_fc->selector_fc) { | |
612 | BT_ASSERT(!var_fc->selector_field_path); | |
613 | var_fc->selector_field_path = | |
614 | resolve_field_path(fc, | |
02b61fe0 | 615 | (void *) var_fc->selector_fc, ctx); |
939190b3 | 616 | if (!var_fc->selector_field_path) { |
7b33a0e0 PP |
617 | ret = -1; |
618 | goto end; | |
619 | } | |
620 | } | |
621 | } | |
622 | default: | |
623 | break; | |
624 | } | |
625 | ||
626 | /* Recursive part */ | |
af0c18e3 | 627 | switch (fc->type) { |
467673c1 PP |
628 | case BT_FIELD_CLASS_TYPE_OPTION_WITHOUT_SELECTOR: |
629 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR: | |
630 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR: | |
631 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR: | |
247fa9e3 PP |
632 | { |
633 | struct bt_field_class_option *opt_fc = (void *) fc; | |
634 | ||
635 | ret = bt_resolve_field_paths(opt_fc->content_fc, ctx); | |
636 | break; | |
637 | } | |
af0c18e3 | 638 | case BT_FIELD_CLASS_TYPE_STRUCTURE: |
02b61fe0 | 639 | case BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR: |
0822832b PP |
640 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR: |
641 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR: | |
7b33a0e0 | 642 | { |
939190b3 PP |
643 | struct bt_field_class_named_field_class_container *container_fc = |
644 | (void *) fc; | |
7b33a0e0 PP |
645 | uint64_t i; |
646 | ||
939190b3 PP |
647 | for (i = 0; i < container_fc->named_fcs->len; i++) { |
648 | struct bt_named_field_class *named_fc = | |
02b61fe0 | 649 | container_fc->named_fcs->pdata[i]; |
7b33a0e0 | 650 | |
939190b3 | 651 | ret = bt_resolve_field_paths(named_fc->fc, ctx); |
7b33a0e0 PP |
652 | if (ret) { |
653 | goto end; | |
654 | } | |
655 | } | |
656 | ||
657 | break; | |
658 | } | |
af0c18e3 PP |
659 | case BT_FIELD_CLASS_TYPE_STATIC_ARRAY: |
660 | case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY: | |
7b33a0e0 | 661 | { |
939190b3 | 662 | struct bt_field_class_array *array_fc = (void *) fc; |
7b33a0e0 | 663 | |
939190b3 | 664 | ret = bt_resolve_field_paths(array_fc->element_fc, ctx); |
7b33a0e0 PP |
665 | break; |
666 | } | |
667 | default: | |
668 | break; | |
669 | } | |
670 | ||
671 | end: | |
672 | return ret; | |
673 | } |