| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * |
| 4 | * Copyright 2018 Philippe Proulx <pproulx@efficios.com> |
| 5 | */ |
| 6 | |
| 7 | #define BT_LOG_TAG "LIB/RESOLVE-FIELD-PATH" |
| 8 | #include "lib/logging.h" |
| 9 | |
| 10 | #include "lib/assert-cond.h" |
| 11 | #include "common/assert.h" |
| 12 | #include <babeltrace2/trace-ir/field-path.h> |
| 13 | #include <limits.h> |
| 14 | #include <stdbool.h> |
| 15 | #include <stdint.h> |
| 16 | #include <inttypes.h> |
| 17 | #include <glib.h> |
| 18 | |
| 19 | #include "field-class.h" |
| 20 | #include "field-path.h" |
| 21 | #include "resolve-field-path.h" |
| 22 | |
| 23 | static |
| 24 | bool find_field_class_recursive(struct bt_field_class *fc, |
| 25 | struct bt_field_class *tgt_fc, struct bt_field_path *field_path) |
| 26 | { |
| 27 | bool found = false; |
| 28 | |
| 29 | if (tgt_fc == fc) { |
| 30 | found = true; |
| 31 | goto end; |
| 32 | } |
| 33 | |
| 34 | if (bt_field_class_type_is(fc->type, BT_FIELD_CLASS_TYPE_OPTION)) { |
| 35 | struct bt_field_class_option *opt_fc = (void *) fc; |
| 36 | struct bt_field_path_item item = { |
| 37 | .type = BT_FIELD_PATH_ITEM_TYPE_CURRENT_OPTION_CONTENT, |
| 38 | .index = UINT64_C(-1), |
| 39 | }; |
| 40 | |
| 41 | bt_field_path_append_item(field_path, &item); |
| 42 | found = find_field_class_recursive(opt_fc->content_fc, |
| 43 | tgt_fc, field_path); |
| 44 | if (found) { |
| 45 | goto end; |
| 46 | } |
| 47 | |
| 48 | bt_field_path_remove_last_item(field_path); |
| 49 | } else if (fc->type == BT_FIELD_CLASS_TYPE_STRUCTURE || |
| 50 | bt_field_class_type_is(fc->type, |
| 51 | BT_FIELD_CLASS_TYPE_VARIANT)) { |
| 52 | struct bt_field_class_named_field_class_container *container_fc = |
| 53 | (void *) fc; |
| 54 | uint64_t i; |
| 55 | |
| 56 | for (i = 0; i < container_fc->named_fcs->len; i++) { |
| 57 | struct bt_named_field_class *named_fc = |
| 58 | container_fc->named_fcs->pdata[i]; |
| 59 | struct bt_field_path_item item = { |
| 60 | .type = BT_FIELD_PATH_ITEM_TYPE_INDEX, |
| 61 | .index = i, |
| 62 | }; |
| 63 | |
| 64 | bt_field_path_append_item(field_path, &item); |
| 65 | found = find_field_class_recursive(named_fc->fc, |
| 66 | tgt_fc, field_path); |
| 67 | if (found) { |
| 68 | goto end; |
| 69 | } |
| 70 | |
| 71 | bt_field_path_remove_last_item(field_path); |
| 72 | } |
| 73 | } else if (bt_field_class_type_is(fc->type, BT_FIELD_CLASS_TYPE_ARRAY)) { |
| 74 | struct bt_field_class_array *array_fc = (void *) fc; |
| 75 | struct bt_field_path_item item = { |
| 76 | .type = BT_FIELD_PATH_ITEM_TYPE_CURRENT_ARRAY_ELEMENT, |
| 77 | .index = UINT64_C(-1), |
| 78 | }; |
| 79 | |
| 80 | bt_field_path_append_item(field_path, &item); |
| 81 | found = find_field_class_recursive(array_fc->element_fc, |
| 82 | tgt_fc, field_path); |
| 83 | if (found) { |
| 84 | goto end; |
| 85 | } |
| 86 | |
| 87 | bt_field_path_remove_last_item(field_path); |
| 88 | } |
| 89 | |
| 90 | end: |
| 91 | return found; |
| 92 | } |
| 93 | |
| 94 | static |
| 95 | int find_field_class(struct bt_field_class *root_fc, |
| 96 | enum bt_field_path_scope root_scope, struct bt_field_class *tgt_fc, |
| 97 | struct bt_field_path **ret_field_path) |
| 98 | { |
| 99 | int ret = 0; |
| 100 | struct bt_field_path *field_path = NULL; |
| 101 | |
| 102 | if (!root_fc) { |
| 103 | goto end; |
| 104 | } |
| 105 | |
| 106 | field_path = bt_field_path_create(); |
| 107 | if (!field_path) { |
| 108 | ret = -1; |
| 109 | goto end; |
| 110 | } |
| 111 | |
| 112 | field_path->root = root_scope; |
| 113 | if (!find_field_class_recursive(root_fc, tgt_fc, field_path)) { |
| 114 | /* Not found here */ |
| 115 | BT_OBJECT_PUT_REF_AND_RESET(field_path); |
| 116 | } |
| 117 | |
| 118 | end: |
| 119 | *ret_field_path = field_path; |
| 120 | return ret; |
| 121 | } |
| 122 | |
| 123 | static |
| 124 | struct bt_field_path *find_field_class_in_ctx(struct bt_field_class *fc, |
| 125 | struct bt_resolve_field_path_context *ctx) |
| 126 | { |
| 127 | struct bt_field_path *field_path = NULL; |
| 128 | int ret; |
| 129 | |
| 130 | ret = find_field_class(ctx->packet_context, BT_FIELD_PATH_SCOPE_PACKET_CONTEXT, |
| 131 | fc, &field_path); |
| 132 | if (ret || field_path) { |
| 133 | goto end; |
| 134 | } |
| 135 | |
| 136 | ret = find_field_class(ctx->event_common_context, |
| 137 | BT_FIELD_PATH_SCOPE_EVENT_COMMON_CONTEXT, fc, &field_path); |
| 138 | if (ret || field_path) { |
| 139 | goto end; |
| 140 | } |
| 141 | |
| 142 | ret = find_field_class(ctx->event_specific_context, |
| 143 | BT_FIELD_PATH_SCOPE_EVENT_SPECIFIC_CONTEXT, fc, &field_path); |
| 144 | if (ret || field_path) { |
| 145 | goto end; |
| 146 | } |
| 147 | |
| 148 | ret = find_field_class(ctx->event_payload, BT_FIELD_PATH_SCOPE_EVENT_PAYLOAD, |
| 149 | fc, &field_path); |
| 150 | if (ret || field_path) { |
| 151 | goto end; |
| 152 | } |
| 153 | |
| 154 | end: |
| 155 | return field_path; |
| 156 | } |
| 157 | |
| 158 | BT_ASSERT_COND_DEV_FUNC |
| 159 | static inline |
| 160 | bool target_is_before_source(struct bt_field_path *src_field_path, |
| 161 | struct bt_field_path *tgt_field_path) |
| 162 | { |
| 163 | bool is_valid = true; |
| 164 | uint64_t src_i = 0, tgt_i = 0; |
| 165 | |
| 166 | if (tgt_field_path->root < src_field_path->root) { |
| 167 | goto end; |
| 168 | } |
| 169 | |
| 170 | if (tgt_field_path->root > src_field_path->root) { |
| 171 | is_valid = false; |
| 172 | goto end; |
| 173 | } |
| 174 | |
| 175 | BT_ASSERT(tgt_field_path->root == src_field_path->root); |
| 176 | |
| 177 | for (src_i = 0, tgt_i = 0; src_i < src_field_path->items->len && |
| 178 | tgt_i < tgt_field_path->items->len; src_i++, tgt_i++) { |
| 179 | struct bt_field_path_item *src_fp_item = |
| 180 | bt_field_path_borrow_item_by_index_inline( |
| 181 | src_field_path, src_i); |
| 182 | struct bt_field_path_item *tgt_fp_item = |
| 183 | bt_field_path_borrow_item_by_index_inline( |
| 184 | tgt_field_path, tgt_i); |
| 185 | |
| 186 | if (src_fp_item->type == BT_FIELD_PATH_ITEM_TYPE_INDEX && |
| 187 | tgt_fp_item->type == BT_FIELD_PATH_ITEM_TYPE_INDEX) { |
| 188 | if (tgt_fp_item->index > src_fp_item->index) { |
| 189 | is_valid = false; |
| 190 | goto end; |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | src_i++; |
| 195 | tgt_i++; |
| 196 | } |
| 197 | |
| 198 | end: |
| 199 | return is_valid; |
| 200 | } |
| 201 | |
| 202 | BT_ASSERT_COND_DEV_FUNC |
| 203 | static inline |
| 204 | struct bt_field_class *borrow_root_field_class( |
| 205 | struct bt_resolve_field_path_context *ctx, enum bt_field_path_scope scope) |
| 206 | { |
| 207 | switch (scope) { |
| 208 | case BT_FIELD_PATH_SCOPE_PACKET_CONTEXT: |
| 209 | return ctx->packet_context; |
| 210 | case BT_FIELD_PATH_SCOPE_EVENT_COMMON_CONTEXT: |
| 211 | return ctx->event_common_context; |
| 212 | case BT_FIELD_PATH_SCOPE_EVENT_SPECIFIC_CONTEXT: |
| 213 | return ctx->event_specific_context; |
| 214 | case BT_FIELD_PATH_SCOPE_EVENT_PAYLOAD: |
| 215 | return ctx->event_payload; |
| 216 | default: |
| 217 | bt_common_abort(); |
| 218 | } |
| 219 | |
| 220 | return NULL; |
| 221 | } |
| 222 | |
| 223 | BT_ASSERT_COND_DEV_FUNC |
| 224 | static inline |
| 225 | struct bt_field_class *borrow_child_field_class( |
| 226 | struct bt_field_class *parent_fc, |
| 227 | struct bt_field_path_item *fp_item) |
| 228 | { |
| 229 | struct bt_field_class *child_fc = NULL; |
| 230 | |
| 231 | if (bt_field_class_type_is(parent_fc->type, |
| 232 | BT_FIELD_CLASS_TYPE_OPTION)) { |
| 233 | struct bt_field_class_option *opt_fc = (void *) parent_fc; |
| 234 | |
| 235 | BT_ASSERT(fp_item->type == |
| 236 | BT_FIELD_PATH_ITEM_TYPE_CURRENT_OPTION_CONTENT); |
| 237 | child_fc = opt_fc->content_fc; |
| 238 | } else if (parent_fc->type == BT_FIELD_CLASS_TYPE_STRUCTURE || |
| 239 | bt_field_class_type_is(parent_fc->type, |
| 240 | BT_FIELD_CLASS_TYPE_VARIANT)) { |
| 241 | struct bt_field_class_named_field_class_container *container_fc = |
| 242 | (void *) parent_fc; |
| 243 | struct bt_named_field_class *named_fc; |
| 244 | |
| 245 | BT_ASSERT(fp_item->type == BT_FIELD_PATH_ITEM_TYPE_INDEX); |
| 246 | named_fc = container_fc->named_fcs->pdata[fp_item->index]; |
| 247 | child_fc = named_fc->fc; |
| 248 | } else if (bt_field_class_type_is(parent_fc->type, |
| 249 | BT_FIELD_CLASS_TYPE_ARRAY)) { |
| 250 | struct bt_field_class_array *array_fc = (void *) parent_fc; |
| 251 | |
| 252 | BT_ASSERT(fp_item->type == |
| 253 | BT_FIELD_PATH_ITEM_TYPE_CURRENT_ARRAY_ELEMENT); |
| 254 | child_fc = array_fc->element_fc; |
| 255 | } |
| 256 | |
| 257 | return child_fc; |
| 258 | } |
| 259 | |
| 260 | BT_ASSERT_COND_DEV_FUNC |
| 261 | static inline |
| 262 | bool target_field_path_in_different_scope_has_struct_fc_only( |
| 263 | struct bt_field_path *src_field_path, |
| 264 | struct bt_field_path *tgt_field_path, |
| 265 | struct bt_resolve_field_path_context *ctx) |
| 266 | { |
| 267 | bool is_valid = true; |
| 268 | uint64_t i = 0; |
| 269 | struct bt_field_class *fc; |
| 270 | |
| 271 | if (src_field_path->root == tgt_field_path->root) { |
| 272 | goto end; |
| 273 | } |
| 274 | |
| 275 | fc = borrow_root_field_class(ctx, tgt_field_path->root); |
| 276 | |
| 277 | for (i = 0; i < tgt_field_path->items->len; i++) { |
| 278 | struct bt_field_path_item *fp_item = |
| 279 | bt_field_path_borrow_item_by_index_inline( |
| 280 | tgt_field_path, i); |
| 281 | |
| 282 | if (bt_field_class_type_is(fc->type, |
| 283 | BT_FIELD_CLASS_TYPE_ARRAY) || |
| 284 | bt_field_class_type_is(fc->type, |
| 285 | BT_FIELD_CLASS_TYPE_OPTION) || |
| 286 | bt_field_class_type_is(fc->type, |
| 287 | BT_FIELD_CLASS_TYPE_VARIANT)) { |
| 288 | is_valid = false; |
| 289 | goto end; |
| 290 | } |
| 291 | |
| 292 | BT_ASSERT(fp_item->type == BT_FIELD_PATH_ITEM_TYPE_INDEX); |
| 293 | fc = borrow_child_field_class(fc, fp_item); |
| 294 | } |
| 295 | |
| 296 | end: |
| 297 | return is_valid; |
| 298 | } |
| 299 | |
| 300 | BT_ASSERT_COND_DEV_FUNC |
| 301 | static inline |
| 302 | bool lca_is_structure_field_class(struct bt_field_path *src_field_path, |
| 303 | struct bt_field_path *tgt_field_path, |
| 304 | struct bt_resolve_field_path_context *ctx) |
| 305 | { |
| 306 | bool is_valid = true; |
| 307 | struct bt_field_class *src_fc; |
| 308 | struct bt_field_class *tgt_fc; |
| 309 | struct bt_field_class *prev_fc = NULL; |
| 310 | uint64_t src_i = 0, tgt_i = 0; |
| 311 | |
| 312 | if (src_field_path->root != tgt_field_path->root) { |
| 313 | goto end; |
| 314 | } |
| 315 | |
| 316 | src_fc = borrow_root_field_class(ctx, src_field_path->root); |
| 317 | tgt_fc = borrow_root_field_class(ctx, tgt_field_path->root); |
| 318 | BT_ASSERT(src_fc); |
| 319 | BT_ASSERT(tgt_fc); |
| 320 | |
| 321 | for (src_i = 0, tgt_i = 0; src_i < src_field_path->items->len && |
| 322 | tgt_i < tgt_field_path->items->len; src_i++, tgt_i++) { |
| 323 | struct bt_field_path_item *src_fp_item = |
| 324 | bt_field_path_borrow_item_by_index_inline( |
| 325 | src_field_path, src_i); |
| 326 | struct bt_field_path_item *tgt_fp_item = |
| 327 | bt_field_path_borrow_item_by_index_inline( |
| 328 | tgt_field_path, tgt_i); |
| 329 | |
| 330 | if (src_fc != tgt_fc) { |
| 331 | if (!prev_fc) { |
| 332 | /* |
| 333 | * This is correct: the LCA is the root |
| 334 | * scope field class, which must be a |
| 335 | * structure field class. |
| 336 | */ |
| 337 | break; |
| 338 | } |
| 339 | |
| 340 | if (prev_fc->type != BT_FIELD_CLASS_TYPE_STRUCTURE) { |
| 341 | is_valid = false; |
| 342 | } |
| 343 | |
| 344 | break; |
| 345 | } |
| 346 | |
| 347 | prev_fc = src_fc; |
| 348 | src_fc = borrow_child_field_class(src_fc, src_fp_item); |
| 349 | tgt_fc = borrow_child_field_class(tgt_fc, tgt_fp_item); |
| 350 | } |
| 351 | |
| 352 | end: |
| 353 | return is_valid; |
| 354 | } |
| 355 | |
| 356 | BT_ASSERT_COND_DEV_FUNC |
| 357 | static inline |
| 358 | bool lca_to_target_has_struct_fc_only(struct bt_field_path *src_field_path, |
| 359 | struct bt_field_path *tgt_field_path, |
| 360 | struct bt_resolve_field_path_context *ctx) |
| 361 | { |
| 362 | bool is_valid = true; |
| 363 | struct bt_field_class *src_fc; |
| 364 | struct bt_field_class *tgt_fc; |
| 365 | uint64_t src_i = 0, tgt_i = 0; |
| 366 | |
| 367 | if (src_field_path->root != tgt_field_path->root) { |
| 368 | goto end; |
| 369 | } |
| 370 | |
| 371 | src_fc = borrow_root_field_class(ctx, src_field_path->root); |
| 372 | tgt_fc = borrow_root_field_class(ctx, tgt_field_path->root); |
| 373 | BT_ASSERT(src_fc); |
| 374 | BT_ASSERT(tgt_fc); |
| 375 | BT_ASSERT(src_fc == tgt_fc); |
| 376 | |
| 377 | /* Find LCA */ |
| 378 | for (src_i = 0, tgt_i = 0; src_i < src_field_path->items->len && |
| 379 | tgt_i < tgt_field_path->items->len; src_i++, tgt_i++) { |
| 380 | struct bt_field_path_item *src_fp_item = |
| 381 | bt_field_path_borrow_item_by_index_inline( |
| 382 | src_field_path, src_i); |
| 383 | struct bt_field_path_item *tgt_fp_item = |
| 384 | bt_field_path_borrow_item_by_index_inline( |
| 385 | tgt_field_path, tgt_i); |
| 386 | |
| 387 | if (src_i != tgt_i) { |
| 388 | /* Next field class is different: LCA is `tgt_fc` */ |
| 389 | break; |
| 390 | } |
| 391 | |
| 392 | src_fc = borrow_child_field_class(src_fc, src_fp_item); |
| 393 | tgt_fc = borrow_child_field_class(tgt_fc, tgt_fp_item); |
| 394 | } |
| 395 | |
| 396 | /* Only structure field classes to the target */ |
| 397 | for (; tgt_i < tgt_field_path->items->len; tgt_i++) { |
| 398 | struct bt_field_path_item *tgt_fp_item = |
| 399 | bt_field_path_borrow_item_by_index_inline( |
| 400 | tgt_field_path, tgt_i); |
| 401 | |
| 402 | if (bt_field_class_type_is(tgt_fc->type, |
| 403 | BT_FIELD_CLASS_TYPE_ARRAY) || |
| 404 | bt_field_class_type_is(tgt_fc->type, |
| 405 | BT_FIELD_CLASS_TYPE_OPTION) || |
| 406 | bt_field_class_type_is(tgt_fc->type, |
| 407 | BT_FIELD_CLASS_TYPE_VARIANT)) { |
| 408 | is_valid = false; |
| 409 | goto end; |
| 410 | } |
| 411 | |
| 412 | tgt_fc = borrow_child_field_class(tgt_fc, tgt_fp_item); |
| 413 | } |
| 414 | |
| 415 | end: |
| 416 | return is_valid; |
| 417 | } |
| 418 | |
| 419 | BT_ASSERT_COND_DEV_FUNC |
| 420 | static inline |
| 421 | bool field_path_is_valid(struct bt_field_class *src_fc, |
| 422 | struct bt_field_class *tgt_fc, |
| 423 | struct bt_resolve_field_path_context *ctx) |
| 424 | { |
| 425 | bool is_valid = true; |
| 426 | struct bt_field_path *src_field_path = find_field_class_in_ctx( |
| 427 | src_fc, ctx); |
| 428 | struct bt_field_path *tgt_field_path = find_field_class_in_ctx( |
| 429 | tgt_fc, ctx); |
| 430 | |
| 431 | if (!src_field_path) { |
| 432 | BT_ASSERT_COND_DEV_MSG("Cannot find requesting field class in " |
| 433 | "resolving context: %!+F", src_fc); |
| 434 | is_valid = false; |
| 435 | goto end; |
| 436 | } |
| 437 | |
| 438 | if (!tgt_field_path) { |
| 439 | BT_ASSERT_COND_DEV_MSG("Cannot find target field class in " |
| 440 | "resolving context: %!+F", tgt_fc); |
| 441 | is_valid = false; |
| 442 | goto end; |
| 443 | } |
| 444 | |
| 445 | /* Target must be before source */ |
| 446 | if (!target_is_before_source(src_field_path, tgt_field_path)) { |
| 447 | BT_ASSERT_COND_DEV_MSG("Target field class is located after " |
| 448 | "requesting field class: %![req-fc-]+F, %![tgt-fc-]+F", |
| 449 | src_fc, tgt_fc); |
| 450 | is_valid = false; |
| 451 | goto end; |
| 452 | } |
| 453 | |
| 454 | /* |
| 455 | * If target is in a different scope than source, there are no |
| 456 | * array or variant field classes on the way to the target. |
| 457 | */ |
| 458 | if (!target_field_path_in_different_scope_has_struct_fc_only( |
| 459 | src_field_path, tgt_field_path, ctx)) { |
| 460 | BT_ASSERT_COND_DEV_MSG("Target field class is located in a " |
| 461 | "different scope than requesting field class, " |
| 462 | "but within an array or a variant field class: " |
| 463 | "%![req-fc-]+F, %![tgt-fc-]+F", |
| 464 | src_fc, tgt_fc); |
| 465 | is_valid = false; |
| 466 | goto end; |
| 467 | } |
| 468 | |
| 469 | /* Same scope: LCA must be a structure field class */ |
| 470 | if (!lca_is_structure_field_class(src_field_path, tgt_field_path, ctx)) { |
| 471 | BT_ASSERT_COND_DEV_MSG("Lowest common ancestor of target and " |
| 472 | "requesting field classes is not a structure field class: " |
| 473 | "%![req-fc-]+F, %![tgt-fc-]+F", |
| 474 | src_fc, tgt_fc); |
| 475 | is_valid = false; |
| 476 | goto end; |
| 477 | } |
| 478 | |
| 479 | /* Same scope: path from LCA to target has no array/variant FTs */ |
| 480 | if (!lca_to_target_has_struct_fc_only(src_field_path, tgt_field_path, |
| 481 | ctx)) { |
| 482 | BT_ASSERT_COND_DEV_MSG("Path from lowest common ancestor of target " |
| 483 | "and requesting field classes to target field class " |
| 484 | "contains an array or a variant field class: " |
| 485 | "%![req-fc-]+F, %![tgt-fc-]+F", src_fc, tgt_fc); |
| 486 | is_valid = false; |
| 487 | goto end; |
| 488 | } |
| 489 | |
| 490 | end: |
| 491 | bt_object_put_ref(src_field_path); |
| 492 | bt_object_put_ref(tgt_field_path); |
| 493 | return is_valid; |
| 494 | } |
| 495 | |
| 496 | static |
| 497 | struct bt_field_path *resolve_field_path(struct bt_field_class *src_fc, |
| 498 | struct bt_field_class *tgt_fc, |
| 499 | struct bt_resolve_field_path_context *ctx, |
| 500 | const char *api_func) |
| 501 | { |
| 502 | BT_ASSERT_PRE_DEV_FROM_FUNC(api_func, "valid-field-class", |
| 503 | field_path_is_valid(src_fc, tgt_fc, ctx), |
| 504 | "Invalid target field class: %![req-fc-]+F, %![tgt-fc-]+F", |
| 505 | src_fc, tgt_fc); |
| 506 | return find_field_class_in_ctx(tgt_fc, ctx); |
| 507 | } |
| 508 | |
| 509 | int bt_resolve_field_paths(struct bt_field_class *fc, |
| 510 | struct bt_resolve_field_path_context *ctx, |
| 511 | const char *api_func) |
| 512 | { |
| 513 | int ret = 0; |
| 514 | |
| 515 | BT_ASSERT(fc); |
| 516 | |
| 517 | /* Resolving part for dynamic array and variant field classes */ |
| 518 | if (bt_field_class_type_is(fc->type, |
| 519 | BT_FIELD_CLASS_TYPE_OPTION_WITH_SELECTOR_FIELD)) { |
| 520 | struct bt_field_class_option_with_selector_field *opt_fc = (void *) fc; |
| 521 | |
| 522 | BT_ASSERT(opt_fc->selector_fc); |
| 523 | BT_ASSERT(!opt_fc->selector_field_path); |
| 524 | opt_fc->selector_field_path = resolve_field_path( |
| 525 | fc, opt_fc->selector_fc, ctx, __func__); |
| 526 | if (!opt_fc->selector_field_path) { |
| 527 | ret = -1; |
| 528 | goto end; |
| 529 | } |
| 530 | } else if (fc->type == BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY_WITH_LENGTH_FIELD) { |
| 531 | struct bt_field_class_array_dynamic *dyn_array_fc = (void *) fc; |
| 532 | |
| 533 | BT_ASSERT(dyn_array_fc->length_fc); |
| 534 | BT_ASSERT(!dyn_array_fc->length_field_path); |
| 535 | dyn_array_fc->length_field_path = resolve_field_path( |
| 536 | fc, dyn_array_fc->length_fc, ctx, __func__); |
| 537 | if (!dyn_array_fc->length_field_path) { |
| 538 | ret = -1; |
| 539 | goto end; |
| 540 | } |
| 541 | } else if (bt_field_class_type_is(fc->type, |
| 542 | BT_FIELD_CLASS_TYPE_VARIANT_WITH_SELECTOR_FIELD)) { |
| 543 | struct bt_field_class_variant_with_selector_field *var_fc = |
| 544 | (void *) fc; |
| 545 | |
| 546 | if (var_fc->selector_fc) { |
| 547 | BT_ASSERT(!var_fc->selector_field_path); |
| 548 | var_fc->selector_field_path = |
| 549 | resolve_field_path(fc, |
| 550 | (void *) var_fc->selector_fc, ctx, |
| 551 | __func__); |
| 552 | if (!var_fc->selector_field_path) { |
| 553 | ret = -1; |
| 554 | goto end; |
| 555 | } |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | /* Recursive part */ |
| 560 | if (bt_field_class_type_is(fc->type, BT_FIELD_CLASS_TYPE_OPTION)) { |
| 561 | struct bt_field_class_option *opt_fc = (void *) fc; |
| 562 | |
| 563 | ret = bt_resolve_field_paths(opt_fc->content_fc, ctx, api_func); |
| 564 | } else if (fc->type == BT_FIELD_CLASS_TYPE_STRUCTURE || |
| 565 | bt_field_class_type_is(fc->type, |
| 566 | BT_FIELD_CLASS_TYPE_VARIANT)) { |
| 567 | struct bt_field_class_named_field_class_container *container_fc = |
| 568 | (void *) fc; |
| 569 | uint64_t i; |
| 570 | |
| 571 | for (i = 0; i < container_fc->named_fcs->len; i++) { |
| 572 | struct bt_named_field_class *named_fc = |
| 573 | container_fc->named_fcs->pdata[i]; |
| 574 | |
| 575 | ret = bt_resolve_field_paths(named_fc->fc, ctx, |
| 576 | api_func); |
| 577 | if (ret) { |
| 578 | goto end; |
| 579 | } |
| 580 | } |
| 581 | } else if (bt_field_class_type_is(fc->type, |
| 582 | BT_FIELD_CLASS_TYPE_ARRAY)) { |
| 583 | struct bt_field_class_array *array_fc = (void *) fc; |
| 584 | |
| 585 | ret = bt_resolve_field_paths(array_fc->element_fc, ctx, |
| 586 | api_func); |
| 587 | } |
| 588 | |
| 589 | end: |
| 590 | return ret; |
| 591 | } |