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) { |
8bc207af PP |
50 | case BT_FIELD_CLASS_TYPE_OPTION_WITHOUT_SELECTOR_FIELD: |
51 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR_FIELD: | |
52 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD: | |
53 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR_FIELD: | |
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: |
8bc207af PP |
72 | case BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR_FIELD: |
73 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD: | |
74 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR_FIELD: | |
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 | 100 | case BT_FIELD_CLASS_TYPE_STATIC_ARRAY: |
b8ddb4f0 PP |
101 | case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITHOUT_LENGTH_FIELD: |
102 | case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITH_LENGTH_FIELD: | |
7b33a0e0 | 103 | { |
939190b3 | 104 | struct bt_field_class_array *array_fc = (void *) fc; |
1d4afa5f PP |
105 | struct bt_field_path_item item = { |
106 | .type = BT_FIELD_PATH_ITEM_TYPE_CURRENT_ARRAY_ELEMENT, | |
107 | .index = UINT64_C(-1), | |
108 | }; | |
7b33a0e0 | 109 | |
1d4afa5f | 110 | bt_field_path_append_item(field_path, &item); |
939190b3 PP |
111 | found = find_field_class_recursive(array_fc->element_fc, |
112 | tgt_fc, field_path); | |
1d4afa5f PP |
113 | if (found) { |
114 | goto end; | |
115 | } | |
116 | ||
117 | bt_field_path_remove_last_item(field_path); | |
7b33a0e0 PP |
118 | break; |
119 | } | |
120 | default: | |
121 | break; | |
122 | } | |
123 | ||
124 | end: | |
125 | return found; | |
126 | } | |
127 | ||
128 | static | |
939190b3 | 129 | int find_field_class(struct bt_field_class *root_fc, |
056995e5 | 130 | enum bt_field_path_scope root_scope, struct bt_field_class *tgt_fc, |
7b33a0e0 PP |
131 | struct bt_field_path **ret_field_path) |
132 | { | |
133 | int ret = 0; | |
134 | struct bt_field_path *field_path = NULL; | |
135 | ||
939190b3 | 136 | if (!root_fc) { |
7b33a0e0 PP |
137 | goto end; |
138 | } | |
139 | ||
140 | field_path = bt_field_path_create(); | |
141 | if (!field_path) { | |
142 | ret = -1; | |
143 | goto end; | |
144 | } | |
145 | ||
146 | field_path->root = root_scope; | |
939190b3 | 147 | if (!find_field_class_recursive(root_fc, tgt_fc, field_path)) { |
7b33a0e0 | 148 | /* Not found here */ |
8138bfe1 | 149 | BT_OBJECT_PUT_REF_AND_RESET(field_path); |
7b33a0e0 PP |
150 | } |
151 | ||
152 | end: | |
153 | *ret_field_path = field_path; | |
154 | return ret; | |
155 | } | |
156 | ||
157 | static | |
939190b3 | 158 | struct bt_field_path *find_field_class_in_ctx(struct bt_field_class *fc, |
7b33a0e0 PP |
159 | struct bt_resolve_field_path_context *ctx) |
160 | { | |
161 | struct bt_field_path *field_path = NULL; | |
162 | int ret; | |
163 | ||
056995e5 | 164 | ret = find_field_class(ctx->packet_context, BT_FIELD_PATH_SCOPE_PACKET_CONTEXT, |
939190b3 | 165 | fc, &field_path); |
7b33a0e0 PP |
166 | if (ret || field_path) { |
167 | goto end; | |
168 | } | |
169 | ||
939190b3 | 170 | ret = find_field_class(ctx->event_common_context, |
056995e5 | 171 | BT_FIELD_PATH_SCOPE_EVENT_COMMON_CONTEXT, fc, &field_path); |
7b33a0e0 PP |
172 | if (ret || field_path) { |
173 | goto end; | |
174 | } | |
175 | ||
939190b3 | 176 | ret = find_field_class(ctx->event_specific_context, |
056995e5 | 177 | BT_FIELD_PATH_SCOPE_EVENT_SPECIFIC_CONTEXT, fc, &field_path); |
7b33a0e0 PP |
178 | if (ret || field_path) { |
179 | goto end; | |
180 | } | |
181 | ||
056995e5 | 182 | ret = find_field_class(ctx->event_payload, BT_FIELD_PATH_SCOPE_EVENT_PAYLOAD, |
939190b3 | 183 | fc, &field_path); |
7b33a0e0 PP |
184 | if (ret || field_path) { |
185 | goto end; | |
186 | } | |
187 | ||
188 | end: | |
189 | return field_path; | |
190 | } | |
191 | ||
fa6cfec3 | 192 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 PP |
193 | static inline |
194 | bool target_is_before_source(struct bt_field_path *src_field_path, | |
195 | struct bt_field_path *tgt_field_path) | |
196 | { | |
197 | bool is_valid = true; | |
198 | uint64_t src_i = 0, tgt_i = 0; | |
199 | ||
200 | if (tgt_field_path->root < src_field_path->root) { | |
201 | goto end; | |
202 | } | |
203 | ||
204 | if (tgt_field_path->root > src_field_path->root) { | |
205 | is_valid = false; | |
206 | goto end; | |
207 | } | |
208 | ||
209 | BT_ASSERT(tgt_field_path->root == src_field_path->root); | |
210 | ||
1d4afa5f PP |
211 | for (src_i = 0, tgt_i = 0; src_i < src_field_path->items->len && |
212 | tgt_i < tgt_field_path->items->len; src_i++, tgt_i++) { | |
213 | struct bt_field_path_item *src_fp_item = | |
214 | bt_field_path_borrow_item_by_index_inline( | |
215 | src_field_path, src_i); | |
216 | struct bt_field_path_item *tgt_fp_item = | |
217 | bt_field_path_borrow_item_by_index_inline( | |
218 | tgt_field_path, tgt_i); | |
219 | ||
220 | if (src_fp_item->type == BT_FIELD_PATH_ITEM_TYPE_INDEX && | |
221 | tgt_fp_item->type == BT_FIELD_PATH_ITEM_TYPE_INDEX) { | |
222 | if (tgt_fp_item->index > src_fp_item->index) { | |
223 | is_valid = false; | |
224 | goto end; | |
225 | } | |
7b33a0e0 PP |
226 | } |
227 | ||
228 | src_i++; | |
229 | tgt_i++; | |
230 | } | |
231 | ||
232 | end: | |
233 | return is_valid; | |
234 | } | |
235 | ||
fa6cfec3 | 236 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 | 237 | static inline |
939190b3 | 238 | struct bt_field_class *borrow_root_field_class( |
056995e5 | 239 | struct bt_resolve_field_path_context *ctx, enum bt_field_path_scope scope) |
7b33a0e0 PP |
240 | { |
241 | switch (scope) { | |
056995e5 | 242 | case BT_FIELD_PATH_SCOPE_PACKET_CONTEXT: |
7b33a0e0 | 243 | return ctx->packet_context; |
056995e5 | 244 | case BT_FIELD_PATH_SCOPE_EVENT_COMMON_CONTEXT: |
7b33a0e0 | 245 | return ctx->event_common_context; |
056995e5 | 246 | case BT_FIELD_PATH_SCOPE_EVENT_SPECIFIC_CONTEXT: |
7b33a0e0 | 247 | return ctx->event_specific_context; |
056995e5 | 248 | case BT_FIELD_PATH_SCOPE_EVENT_PAYLOAD: |
7b33a0e0 PP |
249 | return ctx->event_payload; |
250 | default: | |
251 | abort(); | |
252 | } | |
253 | ||
254 | return NULL; | |
255 | } | |
256 | ||
fa6cfec3 | 257 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 | 258 | static inline |
1d4afa5f PP |
259 | struct bt_field_class *borrow_child_field_class( |
260 | struct bt_field_class *parent_fc, | |
261 | struct bt_field_path_item *fp_item) | |
7b33a0e0 | 262 | { |
939190b3 | 263 | struct bt_field_class *child_fc = NULL; |
7b33a0e0 | 264 | |
af0c18e3 | 265 | switch (parent_fc->type) { |
8bc207af PP |
266 | case BT_FIELD_CLASS_TYPE_OPTION_WITHOUT_SELECTOR_FIELD: |
267 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR_FIELD: | |
268 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD: | |
269 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR_FIELD: | |
247fa9e3 PP |
270 | { |
271 | struct bt_field_class_option *opt_fc = (void *) parent_fc; | |
272 | ||
273 | BT_ASSERT(fp_item->type == | |
274 | BT_FIELD_PATH_ITEM_TYPE_CURRENT_OPTION_CONTENT); | |
275 | child_fc = opt_fc->content_fc; | |
276 | break; | |
277 | } | |
af0c18e3 | 278 | case BT_FIELD_CLASS_TYPE_STRUCTURE: |
8bc207af PP |
279 | case BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR_FIELD: |
280 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD: | |
281 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR_FIELD: | |
7b33a0e0 | 282 | { |
02b61fe0 PP |
283 | struct bt_field_class_named_field_class_container *container_fc = |
284 | (void *) parent_fc; | |
1d4afa5f | 285 | struct bt_named_field_class *named_fc; |
7b33a0e0 | 286 | |
1d4afa5f | 287 | BT_ASSERT(fp_item->type == BT_FIELD_PATH_ITEM_TYPE_INDEX); |
02b61fe0 | 288 | named_fc = container_fc->named_fcs->pdata[fp_item->index]; |
939190b3 | 289 | child_fc = named_fc->fc; |
7b33a0e0 PP |
290 | break; |
291 | } | |
af0c18e3 | 292 | case BT_FIELD_CLASS_TYPE_STATIC_ARRAY: |
b8ddb4f0 PP |
293 | case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITHOUT_LENGTH_FIELD: |
294 | case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITH_LENGTH_FIELD: | |
7b33a0e0 | 295 | { |
939190b3 | 296 | struct bt_field_class_array *array_fc = (void *) parent_fc; |
7b33a0e0 | 297 | |
1d4afa5f PP |
298 | BT_ASSERT(fp_item->type == |
299 | BT_FIELD_PATH_ITEM_TYPE_CURRENT_ARRAY_ELEMENT); | |
939190b3 | 300 | child_fc = array_fc->element_fc; |
7b33a0e0 PP |
301 | break; |
302 | } | |
303 | default: | |
304 | break; | |
305 | } | |
306 | ||
939190b3 | 307 | return child_fc; |
7b33a0e0 PP |
308 | } |
309 | ||
fa6cfec3 | 310 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 | 311 | static inline |
939190b3 | 312 | bool target_field_path_in_different_scope_has_struct_fc_only( |
7b33a0e0 PP |
313 | struct bt_field_path *src_field_path, |
314 | struct bt_field_path *tgt_field_path, | |
315 | struct bt_resolve_field_path_context *ctx) | |
316 | { | |
317 | bool is_valid = true; | |
318 | uint64_t i = 0; | |
939190b3 | 319 | struct bt_field_class *fc; |
7b33a0e0 PP |
320 | |
321 | if (src_field_path->root == tgt_field_path->root) { | |
322 | goto end; | |
323 | } | |
324 | ||
939190b3 | 325 | fc = borrow_root_field_class(ctx, tgt_field_path->root); |
7b33a0e0 | 326 | |
1d4afa5f PP |
327 | for (i = 0; i < tgt_field_path->items->len; i++) { |
328 | struct bt_field_path_item *fp_item = | |
329 | bt_field_path_borrow_item_by_index_inline( | |
330 | tgt_field_path, i); | |
7b33a0e0 | 331 | |
af0c18e3 | 332 | if (fc->type == BT_FIELD_CLASS_TYPE_STATIC_ARRAY || |
b8ddb4f0 PP |
333 | fc->type == BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITHOUT_LENGTH_FIELD || |
334 | fc->type == BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITH_LENGTH_FIELD || | |
8bc207af PP |
335 | fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITHOUT_SELECTOR_FIELD || |
336 | fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR_FIELD || | |
337 | fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD || | |
338 | fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR_FIELD || | |
339 | fc->type == BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR_FIELD || | |
340 | fc->type == BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD || | |
341 | fc->type == BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR_FIELD) { | |
7b33a0e0 PP |
342 | is_valid = false; |
343 | goto end; | |
344 | } | |
345 | ||
1d4afa5f PP |
346 | BT_ASSERT(fp_item->type == BT_FIELD_PATH_ITEM_TYPE_INDEX); |
347 | fc = borrow_child_field_class(fc, fp_item); | |
7b33a0e0 PP |
348 | } |
349 | ||
350 | end: | |
351 | return is_valid; | |
352 | } | |
353 | ||
fa6cfec3 | 354 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 | 355 | static inline |
939190b3 | 356 | bool lca_is_structure_field_class(struct bt_field_path *src_field_path, |
7b33a0e0 PP |
357 | struct bt_field_path *tgt_field_path, |
358 | struct bt_resolve_field_path_context *ctx) | |
359 | { | |
360 | bool is_valid = true; | |
939190b3 PP |
361 | struct bt_field_class *src_fc; |
362 | struct bt_field_class *tgt_fc; | |
363 | struct bt_field_class *prev_fc = NULL; | |
7b33a0e0 PP |
364 | uint64_t src_i = 0, tgt_i = 0; |
365 | ||
366 | if (src_field_path->root != tgt_field_path->root) { | |
367 | goto end; | |
368 | } | |
369 | ||
939190b3 PP |
370 | src_fc = borrow_root_field_class(ctx, src_field_path->root); |
371 | tgt_fc = borrow_root_field_class(ctx, tgt_field_path->root); | |
372 | BT_ASSERT(src_fc); | |
373 | BT_ASSERT(tgt_fc); | |
7b33a0e0 | 374 | |
1d4afa5f PP |
375 | for (src_i = 0, tgt_i = 0; src_i < src_field_path->items->len && |
376 | tgt_i < tgt_field_path->items->len; src_i++, tgt_i++) { | |
377 | struct bt_field_path_item *src_fp_item = | |
378 | bt_field_path_borrow_item_by_index_inline( | |
379 | src_field_path, src_i); | |
380 | struct bt_field_path_item *tgt_fp_item = | |
381 | bt_field_path_borrow_item_by_index_inline( | |
382 | tgt_field_path, tgt_i); | |
7b33a0e0 | 383 | |
939190b3 PP |
384 | if (src_fc != tgt_fc) { |
385 | if (!prev_fc) { | |
7b33a0e0 PP |
386 | /* |
387 | * This is correct: the LCA is the root | |
66fd07a5 PP |
388 | * scope field class, which must be a |
389 | * structure field class. | |
7b33a0e0 PP |
390 | */ |
391 | break; | |
392 | } | |
393 | ||
af0c18e3 | 394 | if (prev_fc->type != BT_FIELD_CLASS_TYPE_STRUCTURE) { |
7b33a0e0 PP |
395 | is_valid = false; |
396 | } | |
397 | ||
398 | break; | |
399 | } | |
400 | ||
939190b3 | 401 | prev_fc = src_fc; |
1d4afa5f PP |
402 | src_fc = borrow_child_field_class(src_fc, src_fp_item); |
403 | tgt_fc = borrow_child_field_class(tgt_fc, tgt_fp_item); | |
7b33a0e0 PP |
404 | } |
405 | ||
406 | end: | |
407 | return is_valid; | |
408 | } | |
409 | ||
fa6cfec3 | 410 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 | 411 | static inline |
939190b3 | 412 | bool lca_to_target_has_struct_fc_only(struct bt_field_path *src_field_path, |
7b33a0e0 PP |
413 | struct bt_field_path *tgt_field_path, |
414 | struct bt_resolve_field_path_context *ctx) | |
415 | { | |
416 | bool is_valid = true; | |
939190b3 PP |
417 | struct bt_field_class *src_fc; |
418 | struct bt_field_class *tgt_fc; | |
7b33a0e0 PP |
419 | uint64_t src_i = 0, tgt_i = 0; |
420 | ||
421 | if (src_field_path->root != tgt_field_path->root) { | |
422 | goto end; | |
423 | } | |
424 | ||
939190b3 PP |
425 | src_fc = borrow_root_field_class(ctx, src_field_path->root); |
426 | tgt_fc = borrow_root_field_class(ctx, tgt_field_path->root); | |
427 | BT_ASSERT(src_fc); | |
428 | BT_ASSERT(tgt_fc); | |
429 | BT_ASSERT(src_fc == tgt_fc); | |
7b33a0e0 PP |
430 | |
431 | /* Find LCA */ | |
1d4afa5f PP |
432 | for (src_i = 0, tgt_i = 0; src_i < src_field_path->items->len && |
433 | tgt_i < tgt_field_path->items->len; src_i++, tgt_i++) { | |
434 | struct bt_field_path_item *src_fp_item = | |
435 | bt_field_path_borrow_item_by_index_inline( | |
436 | src_field_path, src_i); | |
437 | struct bt_field_path_item *tgt_fp_item = | |
438 | bt_field_path_borrow_item_by_index_inline( | |
439 | tgt_field_path, tgt_i); | |
7b33a0e0 PP |
440 | |
441 | if (src_i != tgt_i) { | |
939190b3 | 442 | /* Next field class is different: LCA is `tgt_fc` */ |
7b33a0e0 PP |
443 | break; |
444 | } | |
445 | ||
1d4afa5f PP |
446 | src_fc = borrow_child_field_class(src_fc, src_fp_item); |
447 | tgt_fc = borrow_child_field_class(tgt_fc, tgt_fp_item); | |
7b33a0e0 PP |
448 | } |
449 | ||
939190b3 | 450 | /* Only structure field classes to the target */ |
1d4afa5f PP |
451 | for (; tgt_i < tgt_field_path->items->len; tgt_i++) { |
452 | struct bt_field_path_item *tgt_fp_item = | |
453 | bt_field_path_borrow_item_by_index_inline( | |
454 | tgt_field_path, tgt_i); | |
7b33a0e0 | 455 | |
af0c18e3 | 456 | if (tgt_fc->type == BT_FIELD_CLASS_TYPE_STATIC_ARRAY || |
b8ddb4f0 PP |
457 | tgt_fc->type == BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITHOUT_LENGTH_FIELD || |
458 | tgt_fc->type == BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITH_LENGTH_FIELD || | |
8bc207af PP |
459 | tgt_fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITHOUT_SELECTOR_FIELD || |
460 | tgt_fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR_FIELD || | |
461 | tgt_fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD || | |
462 | tgt_fc->type == BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR_FIELD || | |
463 | tgt_fc->type == BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR_FIELD || | |
464 | tgt_fc->type == BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD || | |
465 | tgt_fc->type == BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR_FIELD) { | |
7b33a0e0 PP |
466 | is_valid = false; |
467 | goto end; | |
468 | } | |
469 | ||
1d4afa5f | 470 | tgt_fc = borrow_child_field_class(tgt_fc, tgt_fp_item); |
7b33a0e0 PP |
471 | } |
472 | ||
473 | end: | |
474 | return is_valid; | |
475 | } | |
476 | ||
fa6cfec3 | 477 | BT_ASSERT_PRE_DEV_FUNC |
7b33a0e0 | 478 | static inline |
939190b3 PP |
479 | bool field_path_is_valid(struct bt_field_class *src_fc, |
480 | struct bt_field_class *tgt_fc, | |
7b33a0e0 PP |
481 | struct bt_resolve_field_path_context *ctx) |
482 | { | |
483 | bool is_valid = true; | |
939190b3 PP |
484 | struct bt_field_path *src_field_path = find_field_class_in_ctx( |
485 | src_fc, ctx); | |
486 | struct bt_field_path *tgt_field_path = find_field_class_in_ctx( | |
487 | tgt_fc, ctx); | |
7b33a0e0 PP |
488 | |
489 | if (!src_field_path) { | |
fa6cfec3 | 490 | BT_ASSERT_PRE_DEV_MSG("Cannot find requesting field class in " |
939190b3 | 491 | "resolving context: %!+F", src_fc); |
7b33a0e0 PP |
492 | is_valid = false; |
493 | goto end; | |
494 | } | |
495 | ||
496 | if (!tgt_field_path) { | |
fa6cfec3 | 497 | BT_ASSERT_PRE_DEV_MSG("Cannot find target field class in " |
939190b3 | 498 | "resolving context: %!+F", tgt_fc); |
7b33a0e0 PP |
499 | is_valid = false; |
500 | goto end; | |
501 | } | |
502 | ||
503 | /* Target must be before source */ | |
504 | if (!target_is_before_source(src_field_path, tgt_field_path)) { | |
fa6cfec3 | 505 | BT_ASSERT_PRE_DEV_MSG("Target field class is located after " |
66fd07a5 | 506 | "requesting field class: %![req-fc-]+F, %![tgt-fc-]+F", |
939190b3 | 507 | src_fc, tgt_fc); |
7b33a0e0 PP |
508 | is_valid = false; |
509 | goto end; | |
510 | } | |
511 | ||
512 | /* | |
513 | * If target is in a different scope than source, there are no | |
939190b3 | 514 | * array or variant field classes on the way to the target. |
7b33a0e0 | 515 | */ |
939190b3 | 516 | if (!target_field_path_in_different_scope_has_struct_fc_only( |
7b33a0e0 | 517 | src_field_path, tgt_field_path, ctx)) { |
fa6cfec3 | 518 | BT_ASSERT_PRE_DEV_MSG("Target field class is located in a " |
66fd07a5 PP |
519 | "different scope than requesting field class, " |
520 | "but within an array or a variant field class: " | |
939190b3 PP |
521 | "%![req-fc-]+F, %![tgt-fc-]+F", |
522 | src_fc, tgt_fc); | |
7b33a0e0 PP |
523 | is_valid = false; |
524 | goto end; | |
525 | } | |
526 | ||
66fd07a5 | 527 | /* Same scope: LCA must be a structure field class */ |
939190b3 | 528 | if (!lca_is_structure_field_class(src_field_path, tgt_field_path, ctx)) { |
fa6cfec3 | 529 | BT_ASSERT_PRE_DEV_MSG("Lowest common ancestor of target and " |
66fd07a5 | 530 | "requesting field classes is not a structure field class: " |
939190b3 PP |
531 | "%![req-fc-]+F, %![tgt-fc-]+F", |
532 | src_fc, tgt_fc); | |
7b33a0e0 PP |
533 | is_valid = false; |
534 | goto end; | |
535 | } | |
536 | ||
537 | /* Same scope: path from LCA to target has no array/variant FTs */ | |
939190b3 | 538 | if (!lca_to_target_has_struct_fc_only(src_field_path, tgt_field_path, |
7b33a0e0 | 539 | ctx)) { |
fa6cfec3 | 540 | BT_ASSERT_PRE_DEV_MSG("Path from lowest common ancestor of target " |
66fd07a5 PP |
541 | "and requesting field classes to target field class " |
542 | "contains an array or a variant field class: " | |
939190b3 | 543 | "%![req-fc-]+F, %![tgt-fc-]+F", src_fc, tgt_fc); |
7b33a0e0 PP |
544 | is_valid = false; |
545 | goto end; | |
546 | } | |
547 | ||
548 | end: | |
8138bfe1 PP |
549 | bt_object_put_ref(src_field_path); |
550 | bt_object_put_ref(tgt_field_path); | |
7b33a0e0 PP |
551 | return is_valid; |
552 | } | |
553 | ||
554 | static | |
939190b3 PP |
555 | struct bt_field_path *resolve_field_path(struct bt_field_class *src_fc, |
556 | struct bt_field_class *tgt_fc, | |
7b33a0e0 PP |
557 | struct bt_resolve_field_path_context *ctx) |
558 | { | |
fa6cfec3 | 559 | BT_ASSERT_PRE_DEV(field_path_is_valid(src_fc, tgt_fc, ctx), |
66fd07a5 | 560 | "Invalid target field class: %![req-fc-]+F, %![tgt-fc-]+F", |
939190b3 PP |
561 | src_fc, tgt_fc); |
562 | return find_field_class_in_ctx(tgt_fc, ctx); | |
7b33a0e0 PP |
563 | } |
564 | ||
565 | BT_HIDDEN | |
939190b3 | 566 | int bt_resolve_field_paths(struct bt_field_class *fc, |
7b33a0e0 PP |
567 | struct bt_resolve_field_path_context *ctx) |
568 | { | |
569 | int ret = 0; | |
570 | ||
939190b3 | 571 | BT_ASSERT(fc); |
7b33a0e0 | 572 | |
939190b3 | 573 | /* Resolving part for dynamic array and variant field classes */ |
af0c18e3 | 574 | switch (fc->type) { |
8bc207af PP |
575 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR_FIELD: |
576 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD: | |
577 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR_FIELD: | |
247fa9e3 | 578 | { |
8bc207af | 579 | struct bt_field_class_option_with_selector_field *opt_fc = (void *) fc; |
247fa9e3 | 580 | |
b8ddb4f0 PP |
581 | BT_ASSERT(opt_fc->selector_fc); |
582 | BT_ASSERT(!opt_fc->selector_field_path); | |
583 | opt_fc->selector_field_path = resolve_field_path( | |
584 | fc, opt_fc->selector_fc, ctx); | |
585 | if (!opt_fc->selector_field_path) { | |
586 | ret = -1; | |
587 | goto end; | |
247fa9e3 PP |
588 | } |
589 | ||
590 | break; | |
591 | } | |
b8ddb4f0 | 592 | case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITH_LENGTH_FIELD: |
7b33a0e0 | 593 | { |
60bbfc7c | 594 | struct bt_field_class_array_dynamic *dyn_array_fc = (void *) fc; |
7b33a0e0 | 595 | |
b8ddb4f0 PP |
596 | BT_ASSERT(dyn_array_fc->length_fc); |
597 | BT_ASSERT(!dyn_array_fc->length_field_path); | |
598 | dyn_array_fc->length_field_path = resolve_field_path( | |
599 | fc, dyn_array_fc->length_fc, ctx); | |
600 | if (!dyn_array_fc->length_field_path) { | |
601 | ret = -1; | |
602 | goto end; | |
7b33a0e0 PP |
603 | } |
604 | ||
605 | break; | |
606 | } | |
8bc207af PP |
607 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD: |
608 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR_FIELD: | |
7b33a0e0 | 609 | { |
8bc207af | 610 | struct bt_field_class_variant_with_selector_field *var_fc = |
02b61fe0 | 611 | (void *) fc; |
939190b3 PP |
612 | |
613 | if (var_fc->selector_fc) { | |
614 | BT_ASSERT(!var_fc->selector_field_path); | |
615 | var_fc->selector_field_path = | |
616 | resolve_field_path(fc, | |
02b61fe0 | 617 | (void *) var_fc->selector_fc, ctx); |
939190b3 | 618 | if (!var_fc->selector_field_path) { |
7b33a0e0 PP |
619 | ret = -1; |
620 | goto end; | |
621 | } | |
622 | } | |
623 | } | |
624 | default: | |
625 | break; | |
626 | } | |
627 | ||
628 | /* Recursive part */ | |
af0c18e3 | 629 | switch (fc->type) { |
8bc207af PP |
630 | case BT_FIELD_CLASS_TYPE_OPTION_WITHOUT_SELECTOR_FIELD: |
631 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_BOOL_SELECTOR_FIELD: | |
632 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD: | |
633 | case BT_FIELD_CLASS_TYPE_OPTION_WITH_SIGNED_INTEGER_SELECTOR_FIELD: | |
247fa9e3 PP |
634 | { |
635 | struct bt_field_class_option *opt_fc = (void *) fc; | |
636 | ||
637 | ret = bt_resolve_field_paths(opt_fc->content_fc, ctx); | |
638 | break; | |
639 | } | |
af0c18e3 | 640 | case BT_FIELD_CLASS_TYPE_STRUCTURE: |
8bc207af PP |
641 | case BT_FIELD_CLASS_TYPE_VARIANT_WITHOUT_SELECTOR_FIELD: |
642 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_UNSIGNED_INTEGER_SELECTOR_FIELD: | |
643 | case BT_FIELD_CLASS_TYPE_VARIANT_WITH_SIGNED_INTEGER_SELECTOR_FIELD: | |
7b33a0e0 | 644 | { |
939190b3 PP |
645 | struct bt_field_class_named_field_class_container *container_fc = |
646 | (void *) fc; | |
7b33a0e0 PP |
647 | uint64_t i; |
648 | ||
939190b3 PP |
649 | for (i = 0; i < container_fc->named_fcs->len; i++) { |
650 | struct bt_named_field_class *named_fc = | |
02b61fe0 | 651 | container_fc->named_fcs->pdata[i]; |
7b33a0e0 | 652 | |
939190b3 | 653 | ret = bt_resolve_field_paths(named_fc->fc, ctx); |
7b33a0e0 PP |
654 | if (ret) { |
655 | goto end; | |
656 | } | |
657 | } | |
658 | ||
659 | break; | |
660 | } | |
af0c18e3 | 661 | case BT_FIELD_CLASS_TYPE_STATIC_ARRAY: |
b8ddb4f0 PP |
662 | case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITHOUT_LENGTH_FIELD: |
663 | case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITH_LENGTH_FIELD: | |
7b33a0e0 | 664 | { |
939190b3 | 665 | struct bt_field_class_array *array_fc = (void *) fc; |
7b33a0e0 | 666 | |
939190b3 | 667 | ret = bt_resolve_field_paths(array_fc->element_fc, ctx); |
7b33a0e0 PP |
668 | break; |
669 | } | |
670 | default: | |
671 | break; | |
672 | } | |
673 | ||
674 | end: | |
675 | return ret; | |
676 | } |