Commit | Line | Data |
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67905e42 MD |
1 | /* |
2 | * ctf-visitor-semantic-validator.c | |
3 | * | |
4 | * Common Trace Format Metadata Semantic Validator. | |
5 | * | |
6 | * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
7 | * | |
8 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
9 | * of this software and associated documentation files (the "Software"), to deal | |
10 | * in the Software without restriction, including without limitation the rights | |
11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
12 | * copies of the Software, and to permit persons to whom the Software is | |
13 | * furnished to do so, subject to the following conditions: | |
14 | * | |
15 | * The above copyright notice and this permission notice shall be included in | |
16 | * all copies or substantial portions of the Software. | |
c462e188 MD |
17 | * |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
21 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
24 | * SOFTWARE. | |
67905e42 MD |
25 | */ |
26 | ||
27 | #include <stdio.h> | |
28 | #include <unistd.h> | |
29 | #include <string.h> | |
30 | #include <stdlib.h> | |
31 | #include <assert.h> | |
32 | #include <glib.h> | |
33 | #include <inttypes.h> | |
34 | #include <errno.h> | |
70bd0a12 | 35 | #include <babeltrace/babeltrace-internal.h> |
67905e42 MD |
36 | #include <babeltrace/list.h> |
37 | #include "ctf-scanner.h" | |
38 | #include "ctf-parser.h" | |
39 | #include "ctf-ast.h" | |
40 | ||
3122e6f0 JD |
41 | #define _bt_list_first_entry(ptr, type, member) \ |
42 | bt_list_entry((ptr)->next, type, member) | |
67905e42 | 43 | |
34f7b02c | 44 | #define fprintf_dbg(fd, fmt, args...) fprintf(fd, "%s: " fmt, __func__, ## args) |
67905e42 MD |
45 | |
46 | static | |
47 | int _ctf_visitor_semantic_check(FILE *fd, int depth, struct ctf_node *node); | |
48 | ||
49 | static | |
50 | int ctf_visitor_unary_expression(FILE *fd, int depth, struct ctf_node *node) | |
51 | { | |
52 | struct ctf_node *iter; | |
34f7b02c | 53 | int is_ctf_exp = 0, is_ctf_exp_left = 0; |
67905e42 MD |
54 | |
55 | switch (node->parent->type) { | |
56 | case NODE_CTF_EXPRESSION: | |
34f7b02c | 57 | is_ctf_exp = 1; |
3122e6f0 | 58 | bt_list_for_each_entry(iter, &node->parent->u.ctf_expression.left, |
67905e42 MD |
59 | siblings) { |
60 | if (iter == node) { | |
61 | is_ctf_exp_left = 1; | |
62 | /* | |
63 | * We are a left child of a ctf expression. | |
64 | * We are only allowed to be a string. | |
65 | */ | |
34f7b02c MD |
66 | if (node->u.unary_expression.type != UNARY_STRING) { |
67 | fprintf(fd, "[error]: semantic error (left child of a ctf expression is only allowed to be a string)\n"); | |
68 | ||
67905e42 | 69 | goto errperm; |
34f7b02c | 70 | } |
67905e42 MD |
71 | break; |
72 | } | |
73 | } | |
74 | /* Right child of a ctf expression can be any type of unary exp. */ | |
75 | break; /* OK */ | |
76 | case NODE_TYPE_DECLARATOR: | |
77 | /* | |
2b0a0f95 | 78 | * We are the length of a type declarator. |
67905e42 MD |
79 | */ |
80 | switch (node->u.unary_expression.type) { | |
67905e42 | 81 | case UNARY_UNSIGNED_CONSTANT: |
98df1c9f | 82 | case UNARY_STRING: |
67905e42 MD |
83 | break; |
84 | default: | |
98df1c9f | 85 | fprintf(fd, "[error]: semantic error (children of type declarator and enum can only be unsigned numeric constants or references to fields (a.b.c))\n"); |
67905e42 MD |
86 | goto errperm; |
87 | } | |
88 | break; /* OK */ | |
b7e35bad MD |
89 | |
90 | case NODE_STRUCT: | |
91 | /* | |
92 | * We are the size of a struct align attribute. | |
93 | */ | |
94 | switch (node->u.unary_expression.type) { | |
95 | case UNARY_UNSIGNED_CONSTANT: | |
96 | break; | |
97 | default: | |
98 | fprintf(fd, "[error]: semantic error (structure alignment attribute can only be unsigned numeric constants)\n"); | |
99 | goto errperm; | |
100 | } | |
101 | break; | |
102 | ||
67905e42 | 103 | case NODE_ENUMERATOR: |
135d0e88 | 104 | /* The enumerator's parent has validated its validity already. */ |
67905e42 MD |
105 | break; /* OK */ |
106 | ||
107 | case NODE_UNARY_EXPRESSION: | |
108 | /* | |
109 | * We disallow nested unary expressions and "sbrac" unary | |
110 | * expressions. | |
111 | */ | |
34f7b02c | 112 | fprintf(fd, "[error]: semantic error (nested unary expressions not allowed ( () and [] ))\n"); |
67905e42 MD |
113 | goto errperm; |
114 | ||
115 | case NODE_ROOT: | |
116 | case NODE_EVENT: | |
117 | case NODE_STREAM: | |
e2c76a4d | 118 | case NODE_ENV: |
67905e42 | 119 | case NODE_TRACE: |
73d15916 | 120 | case NODE_CLOCK: |
f133896d | 121 | case NODE_CALLSITE: |
67905e42 MD |
122 | case NODE_TYPEDEF: |
123 | case NODE_TYPEALIAS_TARGET: | |
124 | case NODE_TYPEALIAS_ALIAS: | |
125 | case NODE_TYPEALIAS: | |
126 | case NODE_TYPE_SPECIFIER: | |
127 | case NODE_POINTER: | |
128 | case NODE_FLOATING_POINT: | |
129 | case NODE_INTEGER: | |
67905e42 | 130 | case NODE_STRING: |
2b0a0f95 | 131 | case NODE_ENUM: |
67905e42 MD |
132 | case NODE_STRUCT_OR_VARIANT_DECLARATION: |
133 | case NODE_VARIANT: | |
67905e42 MD |
134 | default: |
135 | goto errinval; | |
136 | } | |
137 | ||
138 | switch (node->u.unary_expression.link) { | |
139 | case UNARY_LINK_UNKNOWN: | |
135d0e88 | 140 | /* We don't allow empty link except on the first node of the list */ |
3122e6f0 | 141 | if (is_ctf_exp && _bt_list_first_entry(is_ctf_exp_left ? |
135d0e88 MD |
142 | &node->parent->u.ctf_expression.left : |
143 | &node->parent->u.ctf_expression.right, | |
144 | struct ctf_node, | |
34f7b02c MD |
145 | siblings) != node) { |
146 | fprintf(fd, "[error]: semantic error (empty link not allowed except on first node of unary expression (need to separate nodes with \".\" or \"->\")\n"); | |
135d0e88 | 147 | goto errperm; |
34f7b02c | 148 | } |
135d0e88 | 149 | break; /* OK */ |
67905e42 MD |
150 | case UNARY_DOTLINK: |
151 | case UNARY_ARROWLINK: | |
152 | /* We only allow -> and . links between children of ctf_expression. */ | |
34f7b02c MD |
153 | if (node->parent->type != NODE_CTF_EXPRESSION) { |
154 | fprintf(fd, "[error]: semantic error (links \".\" and \"->\" are only allowed as children of ctf expression)\n"); | |
135d0e88 | 155 | goto errperm; |
34f7b02c | 156 | } |
135d0e88 MD |
157 | /* |
158 | * Only strings can be separated linked by . or ->. | |
159 | * This includes "", '' and non-quoted identifiers. | |
160 | */ | |
34f7b02c MD |
161 | if (node->u.unary_expression.type != UNARY_STRING) { |
162 | fprintf(fd, "[error]: semantic error (links \".\" and \"->\" are only allowed to separate strings and identifiers)\n"); | |
163 | goto errperm; | |
164 | } | |
165 | /* We don't allow link on the first node of the list */ | |
3122e6f0 | 166 | if (is_ctf_exp && _bt_list_first_entry(is_ctf_exp_left ? |
34f7b02c MD |
167 | &node->parent->u.ctf_expression.left : |
168 | &node->parent->u.ctf_expression.right, | |
169 | struct ctf_node, | |
170 | siblings) == node) { | |
171 | fprintf(fd, "[error]: semantic error (links \".\" and \"->\" are not allowed before first node of the unary expression list)\n"); | |
135d0e88 | 172 | goto errperm; |
34f7b02c | 173 | } |
67905e42 MD |
174 | break; |
175 | case UNARY_DOTDOTDOT: | |
176 | /* We only allow ... link between children of enumerator. */ | |
34f7b02c MD |
177 | if (node->parent->type != NODE_ENUMERATOR) { |
178 | fprintf(fd, "[error]: semantic error (link \"...\" is only allowed within enumerator)\n"); | |
135d0e88 | 179 | goto errperm; |
34f7b02c | 180 | } |
67905e42 | 181 | /* We don't allow link on the first node of the list */ |
3122e6f0 | 182 | if (_bt_list_first_entry(&node->parent->u.enumerator.values, |
67905e42 | 183 | struct ctf_node, |
34f7b02c MD |
184 | siblings) == node) { |
185 | fprintf(fd, "[error]: semantic error (link \"...\" is not allowed on the first node of the unary expression list)\n"); | |
186 | goto errperm; | |
187 | } | |
67905e42 MD |
188 | break; |
189 | default: | |
190 | fprintf(fd, "[error] %s: unknown expression link type %d\n", __func__, | |
191 | (int) node->u.unary_expression.link); | |
192 | return -EINVAL; | |
193 | } | |
194 | return 0; | |
195 | ||
196 | errinval: | |
34f7b02c MD |
197 | fprintf(fd, "[error] %s: incoherent parent type %s for node type %s\n", __func__, |
198 | node_type(node->parent), node_type(node)); | |
67905e42 MD |
199 | return -EINVAL; /* Incoherent structure */ |
200 | ||
201 | errperm: | |
34f7b02c MD |
202 | fprintf(fd, "[error] %s: semantic error (parent type %s for node type %s)\n", __func__, |
203 | node_type(node->parent), node_type(node)); | |
67905e42 MD |
204 | return -EPERM; /* Structure not allowed */ |
205 | } | |
206 | ||
207 | static | |
3e11b713 | 208 | int ctf_visitor_type_specifier_list(FILE *fd, int depth, struct ctf_node *node) |
67905e42 MD |
209 | { |
210 | switch (node->parent->type) { | |
211 | case NODE_CTF_EXPRESSION: | |
212 | case NODE_TYPE_DECLARATOR: | |
213 | case NODE_TYPEDEF: | |
214 | case NODE_TYPEALIAS_TARGET: | |
215 | case NODE_TYPEALIAS_ALIAS: | |
216 | case NODE_ENUM: | |
34f7b02c | 217 | case NODE_STRUCT_OR_VARIANT_DECLARATION: |
3e11b713 MD |
218 | case NODE_ROOT: |
219 | break; /* OK */ | |
220 | ||
221 | case NODE_EVENT: | |
222 | case NODE_STREAM: | |
e2c76a4d | 223 | case NODE_ENV: |
3e11b713 | 224 | case NODE_TRACE: |
73d15916 | 225 | case NODE_CLOCK: |
f133896d | 226 | case NODE_CALLSITE: |
3e11b713 MD |
227 | case NODE_UNARY_EXPRESSION: |
228 | case NODE_TYPEALIAS: | |
229 | case NODE_TYPE_SPECIFIER: | |
230 | case NODE_TYPE_SPECIFIER_LIST: | |
231 | case NODE_POINTER: | |
232 | case NODE_FLOATING_POINT: | |
233 | case NODE_INTEGER: | |
234 | case NODE_STRING: | |
235 | case NODE_ENUMERATOR: | |
236 | case NODE_VARIANT: | |
237 | case NODE_STRUCT: | |
238 | default: | |
239 | goto errinval; | |
240 | } | |
241 | return 0; | |
242 | errinval: | |
243 | fprintf(fd, "[error] %s: incoherent parent type %s for node type %s\n", __func__, | |
244 | node_type(node->parent), node_type(node)); | |
245 | return -EINVAL; /* Incoherent structure */ | |
246 | } | |
247 | ||
248 | static | |
249 | int ctf_visitor_type_specifier(FILE *fd, int depth, struct ctf_node *node) | |
250 | { | |
251 | switch (node->parent->type) { | |
252 | case NODE_TYPE_SPECIFIER_LIST: | |
67905e42 MD |
253 | break; /* OK */ |
254 | ||
3e11b713 MD |
255 | case NODE_CTF_EXPRESSION: |
256 | case NODE_TYPE_DECLARATOR: | |
257 | case NODE_TYPEDEF: | |
258 | case NODE_TYPEALIAS_TARGET: | |
259 | case NODE_TYPEALIAS_ALIAS: | |
260 | case NODE_ENUM: | |
261 | case NODE_STRUCT_OR_VARIANT_DECLARATION: | |
67905e42 MD |
262 | case NODE_ROOT: |
263 | case NODE_EVENT: | |
264 | case NODE_STREAM: | |
e2c76a4d | 265 | case NODE_ENV: |
67905e42 | 266 | case NODE_TRACE: |
73d15916 | 267 | case NODE_CLOCK: |
f133896d | 268 | case NODE_CALLSITE: |
67905e42 MD |
269 | case NODE_UNARY_EXPRESSION: |
270 | case NODE_TYPEALIAS: | |
271 | case NODE_TYPE_SPECIFIER: | |
272 | case NODE_POINTER: | |
273 | case NODE_FLOATING_POINT: | |
274 | case NODE_INTEGER: | |
275 | case NODE_STRING: | |
276 | case NODE_ENUMERATOR: | |
67905e42 MD |
277 | case NODE_VARIANT: |
278 | case NODE_STRUCT: | |
279 | default: | |
280 | goto errinval; | |
281 | } | |
282 | return 0; | |
283 | errinval: | |
34f7b02c MD |
284 | fprintf(fd, "[error] %s: incoherent parent type %s for node type %s\n", __func__, |
285 | node_type(node->parent), node_type(node)); | |
67905e42 MD |
286 | return -EINVAL; /* Incoherent structure */ |
287 | } | |
288 | ||
289 | static | |
290 | int ctf_visitor_type_declarator(FILE *fd, int depth, struct ctf_node *node) | |
291 | { | |
292 | int ret = 0; | |
293 | struct ctf_node *iter; | |
294 | ||
295 | depth++; | |
296 | ||
297 | switch (node->parent->type) { | |
298 | case NODE_TYPE_DECLARATOR: | |
299 | /* | |
300 | * A nested type declarator is not allowed to contain pointers. | |
301 | */ | |
3122e6f0 | 302 | if (!bt_list_empty(&node->u.type_declarator.pointers)) |
67905e42 | 303 | goto errperm; |
1ee8e81d | 304 | break; /* OK */ |
67905e42 | 305 | case NODE_TYPEALIAS_TARGET: |
1ee8e81d | 306 | break; /* OK */ |
67905e42 | 307 | case NODE_TYPEALIAS_ALIAS: |
1ee8e81d MD |
308 | /* |
309 | * Only accept alias name containing: | |
310 | * - identifier | |
311 | * - identifier * (any number of pointers) | |
312 | * NOT accepting alias names containing [] (would otherwise | |
313 | * cause semantic clash for later declarations of | |
314 | * arrays/sequences of elements, where elements could be | |
315 | * arrays/sequences themselves (if allowed in typealias). | |
316 | * NOT accepting alias with identifier. The declarator should | |
317 | * be either empty or contain pointer(s). | |
318 | */ | |
319 | if (node->u.type_declarator.type == TYPEDEC_NESTED) | |
320 | goto errperm; | |
3122e6f0 | 321 | bt_list_for_each_entry(iter, &node->parent->u.typealias_alias.type_specifier_list->u.type_specifier_list.head, |
e4e9b471 MD |
322 | siblings) { |
323 | switch (iter->u.type_specifier.type) { | |
324 | case TYPESPEC_FLOATING_POINT: | |
325 | case TYPESPEC_INTEGER: | |
326 | case TYPESPEC_STRING: | |
327 | case TYPESPEC_STRUCT: | |
328 | case TYPESPEC_VARIANT: | |
329 | case TYPESPEC_ENUM: | |
3122e6f0 | 330 | if (bt_list_empty(&node->u.type_declarator.pointers)) |
e4e9b471 MD |
331 | goto errperm; |
332 | break; | |
333 | default: | |
334 | break; | |
335 | } | |
3e11b713 | 336 | } |
1ee8e81d MD |
337 | if (node->u.type_declarator.type == TYPEDEC_ID && |
338 | node->u.type_declarator.u.id != NULL) | |
339 | goto errperm; | |
340 | break; /* OK */ | |
341 | case NODE_TYPEDEF: | |
67905e42 MD |
342 | case NODE_STRUCT_OR_VARIANT_DECLARATION: |
343 | break; /* OK */ | |
344 | ||
345 | case NODE_ROOT: | |
346 | case NODE_EVENT: | |
347 | case NODE_STREAM: | |
e2c76a4d | 348 | case NODE_ENV: |
67905e42 | 349 | case NODE_TRACE: |
73d15916 | 350 | case NODE_CLOCK: |
f133896d | 351 | case NODE_CALLSITE: |
67905e42 MD |
352 | case NODE_CTF_EXPRESSION: |
353 | case NODE_UNARY_EXPRESSION: | |
354 | case NODE_TYPEALIAS: | |
355 | case NODE_TYPE_SPECIFIER: | |
356 | case NODE_POINTER: | |
357 | case NODE_FLOATING_POINT: | |
358 | case NODE_INTEGER: | |
359 | case NODE_STRING: | |
360 | case NODE_ENUMERATOR: | |
361 | case NODE_ENUM: | |
362 | case NODE_VARIANT: | |
363 | case NODE_STRUCT: | |
364 | default: | |
365 | goto errinval; | |
366 | } | |
367 | ||
3122e6f0 | 368 | bt_list_for_each_entry(iter, &node->u.type_declarator.pointers, |
98df1c9f MD |
369 | siblings) { |
370 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); | |
371 | if (ret) | |
372 | return ret; | |
67905e42 MD |
373 | } |
374 | ||
375 | switch (node->u.type_declarator.type) { | |
376 | case TYPEDEC_ID: | |
377 | break; | |
378 | case TYPEDEC_NESTED: | |
7d4192cb | 379 | { |
67905e42 MD |
380 | if (node->u.type_declarator.u.nested.type_declarator) { |
381 | ret = _ctf_visitor_semantic_check(fd, depth + 1, | |
382 | node->u.type_declarator.u.nested.type_declarator); | |
383 | if (ret) | |
384 | return ret; | |
385 | } | |
7c7835b0 | 386 | if (!node->u.type_declarator.u.nested.abstract_array) { |
3122e6f0 | 387 | bt_list_for_each_entry(iter, &node->u.type_declarator.u.nested.length, |
7c7835b0 MD |
388 | siblings) { |
389 | if (iter->type != NODE_UNARY_EXPRESSION) { | |
390 | fprintf(fd, "[error] %s: expecting unary expression as length\n", __func__); | |
391 | return -EINVAL; | |
392 | } | |
393 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); | |
394 | if (ret) | |
395 | return ret; | |
396 | } | |
397 | } else { | |
398 | if (node->parent->type == NODE_TYPEALIAS_TARGET) { | |
399 | fprintf(fd, "[error] %s: abstract array declarator not permitted as target of typealias\n", __func__); | |
98df1c9f MD |
400 | return -EINVAL; |
401 | } | |
98df1c9f | 402 | } |
67905e42 MD |
403 | if (node->u.type_declarator.bitfield_len) { |
404 | ret = _ctf_visitor_semantic_check(fd, depth + 1, | |
405 | node->u.type_declarator.bitfield_len); | |
406 | if (ret) | |
407 | return ret; | |
408 | } | |
409 | break; | |
7d4192cb | 410 | } |
67905e42 MD |
411 | case TYPEDEC_UNKNOWN: |
412 | default: | |
413 | fprintf(fd, "[error] %s: unknown type declarator %d\n", __func__, | |
414 | (int) node->u.type_declarator.type); | |
415 | return -EINVAL; | |
416 | } | |
417 | depth--; | |
418 | return 0; | |
419 | ||
420 | errinval: | |
34f7b02c MD |
421 | fprintf(fd, "[error] %s: incoherent parent type %s for node type %s\n", __func__, |
422 | node_type(node->parent), node_type(node)); | |
67905e42 MD |
423 | return -EINVAL; /* Incoherent structure */ |
424 | ||
425 | errperm: | |
34f7b02c MD |
426 | fprintf(fd, "[error] %s: semantic error (parent type %s for node type %s)\n", __func__, |
427 | node_type(node->parent), node_type(node)); | |
67905e42 MD |
428 | return -EPERM; /* Structure not allowed */ |
429 | } | |
430 | ||
431 | static | |
432 | int _ctf_visitor_semantic_check(FILE *fd, int depth, struct ctf_node *node) | |
433 | { | |
434 | int ret = 0; | |
435 | struct ctf_node *iter; | |
436 | ||
0c880b0a MD |
437 | if (node->visited) |
438 | return 0; | |
439 | ||
67905e42 MD |
440 | switch (node->type) { |
441 | case NODE_ROOT: | |
3122e6f0 | 442 | bt_list_for_each_entry(iter, &node->u.root.declaration_list, siblings) { |
67905e42 MD |
443 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
444 | if (ret) | |
445 | return ret; | |
446 | } | |
3122e6f0 | 447 | bt_list_for_each_entry(iter, &node->u.root.trace, siblings) { |
67905e42 MD |
448 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
449 | if (ret) | |
450 | return ret; | |
451 | } | |
3122e6f0 | 452 | bt_list_for_each_entry(iter, &node->u.root.stream, siblings) { |
67905e42 MD |
453 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
454 | if (ret) | |
455 | return ret; | |
456 | } | |
3122e6f0 | 457 | bt_list_for_each_entry(iter, &node->u.root.event, siblings) { |
67905e42 MD |
458 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
459 | if (ret) | |
460 | return ret; | |
461 | } | |
462 | break; | |
463 | ||
464 | case NODE_EVENT: | |
465 | switch (node->parent->type) { | |
466 | case NODE_ROOT: | |
467 | break; /* OK */ | |
468 | default: | |
469 | goto errinval; | |
470 | } | |
471 | ||
3122e6f0 | 472 | bt_list_for_each_entry(iter, &node->u.event.declaration_list, siblings) { |
67905e42 MD |
473 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
474 | if (ret) | |
475 | return ret; | |
476 | } | |
477 | break; | |
478 | case NODE_STREAM: | |
479 | switch (node->parent->type) { | |
480 | case NODE_ROOT: | |
481 | break; /* OK */ | |
482 | default: | |
483 | goto errinval; | |
484 | } | |
485 | ||
3122e6f0 | 486 | bt_list_for_each_entry(iter, &node->u.stream.declaration_list, siblings) { |
67905e42 MD |
487 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
488 | if (ret) | |
489 | return ret; | |
490 | } | |
491 | break; | |
e2c76a4d MD |
492 | case NODE_ENV: |
493 | switch (node->parent->type) { | |
494 | case NODE_ROOT: | |
495 | break; /* OK */ | |
496 | default: | |
497 | goto errinval; | |
498 | } | |
499 | ||
3122e6f0 | 500 | bt_list_for_each_entry(iter, &node->u.env.declaration_list, siblings) { |
e2c76a4d MD |
501 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
502 | if (ret) | |
503 | return ret; | |
504 | } | |
505 | break; | |
67905e42 MD |
506 | case NODE_TRACE: |
507 | switch (node->parent->type) { | |
508 | case NODE_ROOT: | |
509 | break; /* OK */ | |
510 | default: | |
511 | goto errinval; | |
512 | } | |
513 | ||
3122e6f0 | 514 | bt_list_for_each_entry(iter, &node->u.trace.declaration_list, siblings) { |
67905e42 MD |
515 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
516 | if (ret) | |
517 | return ret; | |
518 | } | |
519 | break; | |
73d15916 MD |
520 | case NODE_CLOCK: |
521 | switch (node->parent->type) { | |
522 | case NODE_ROOT: | |
523 | break; /* OK */ | |
524 | default: | |
525 | goto errinval; | |
526 | } | |
527 | ||
3122e6f0 | 528 | bt_list_for_each_entry(iter, &node->u.clock.declaration_list, siblings) { |
73d15916 MD |
529 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
530 | if (ret) | |
531 | return ret; | |
532 | } | |
533 | break; | |
f133896d MD |
534 | case NODE_CALLSITE: |
535 | switch (node->parent->type) { | |
536 | case NODE_ROOT: | |
537 | break; /* OK */ | |
538 | default: | |
539 | goto errinval; | |
540 | } | |
73d15916 | 541 | |
f133896d MD |
542 | bt_list_for_each_entry(iter, &node->u.callsite.declaration_list, siblings) { |
543 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); | |
544 | if (ret) | |
545 | return ret; | |
546 | } | |
547 | break; | |
67905e42 MD |
548 | |
549 | case NODE_CTF_EXPRESSION: | |
550 | switch (node->parent->type) { | |
551 | case NODE_ROOT: | |
552 | case NODE_EVENT: | |
553 | case NODE_STREAM: | |
e2c76a4d | 554 | case NODE_ENV: |
67905e42 | 555 | case NODE_TRACE: |
73d15916 | 556 | case NODE_CLOCK: |
f133896d | 557 | case NODE_CALLSITE: |
67905e42 MD |
558 | case NODE_FLOATING_POINT: |
559 | case NODE_INTEGER: | |
560 | case NODE_STRING: | |
561 | break; /* OK */ | |
562 | ||
563 | case NODE_CTF_EXPRESSION: | |
564 | case NODE_UNARY_EXPRESSION: | |
565 | case NODE_TYPEDEF: | |
566 | case NODE_TYPEALIAS_TARGET: | |
567 | case NODE_TYPEALIAS_ALIAS: | |
568 | case NODE_STRUCT_OR_VARIANT_DECLARATION: | |
569 | case NODE_TYPEALIAS: | |
570 | case NODE_TYPE_SPECIFIER: | |
3e11b713 | 571 | case NODE_TYPE_SPECIFIER_LIST: |
67905e42 MD |
572 | case NODE_POINTER: |
573 | case NODE_TYPE_DECLARATOR: | |
574 | case NODE_ENUMERATOR: | |
575 | case NODE_ENUM: | |
576 | case NODE_VARIANT: | |
577 | case NODE_STRUCT: | |
578 | default: | |
579 | goto errinval; | |
580 | } | |
581 | ||
582 | depth++; | |
3122e6f0 | 583 | bt_list_for_each_entry(iter, &node->u.ctf_expression.left, siblings) { |
67905e42 MD |
584 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
585 | if (ret) | |
586 | return ret; | |
587 | } | |
3122e6f0 | 588 | bt_list_for_each_entry(iter, &node->u.ctf_expression.right, siblings) { |
67905e42 MD |
589 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
590 | if (ret) | |
591 | return ret; | |
592 | } | |
593 | depth--; | |
594 | break; | |
595 | case NODE_UNARY_EXPRESSION: | |
596 | return ctf_visitor_unary_expression(fd, depth, node); | |
597 | ||
598 | case NODE_TYPEDEF: | |
599 | switch (node->parent->type) { | |
600 | case NODE_ROOT: | |
601 | case NODE_EVENT: | |
602 | case NODE_STREAM: | |
603 | case NODE_TRACE: | |
604 | case NODE_VARIANT: | |
605 | case NODE_STRUCT: | |
606 | break; /* OK */ | |
607 | ||
608 | case NODE_CTF_EXPRESSION: | |
609 | case NODE_UNARY_EXPRESSION: | |
610 | case NODE_TYPEDEF: | |
611 | case NODE_TYPEALIAS_TARGET: | |
612 | case NODE_TYPEALIAS_ALIAS: | |
613 | case NODE_TYPEALIAS: | |
614 | case NODE_STRUCT_OR_VARIANT_DECLARATION: | |
615 | case NODE_TYPE_SPECIFIER: | |
3e11b713 | 616 | case NODE_TYPE_SPECIFIER_LIST: |
67905e42 MD |
617 | case NODE_POINTER: |
618 | case NODE_TYPE_DECLARATOR: | |
619 | case NODE_FLOATING_POINT: | |
620 | case NODE_INTEGER: | |
621 | case NODE_STRING: | |
622 | case NODE_ENUMERATOR: | |
623 | case NODE_ENUM: | |
73d15916 | 624 | case NODE_CLOCK: |
f133896d | 625 | case NODE_CALLSITE: |
e2c76a4d | 626 | case NODE_ENV: |
67905e42 MD |
627 | default: |
628 | goto errinval; | |
629 | } | |
630 | ||
631 | depth++; | |
3e11b713 MD |
632 | ret = _ctf_visitor_semantic_check(fd, depth + 1, |
633 | node->u._typedef.type_specifier_list); | |
634 | if (ret) | |
635 | return ret; | |
3122e6f0 | 636 | bt_list_for_each_entry(iter, &node->u._typedef.type_declarators, siblings) { |
67905e42 MD |
637 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
638 | if (ret) | |
639 | return ret; | |
640 | } | |
641 | depth--; | |
642 | break; | |
643 | case NODE_TYPEALIAS_TARGET: | |
1ee8e81d MD |
644 | { |
645 | int nr_declarators; | |
646 | ||
67905e42 MD |
647 | switch (node->parent->type) { |
648 | case NODE_TYPEALIAS: | |
649 | break; /* OK */ | |
650 | default: | |
651 | goto errinval; | |
652 | } | |
653 | ||
654 | depth++; | |
3e11b713 MD |
655 | ret = _ctf_visitor_semantic_check(fd, depth + 1, |
656 | node->u.typealias_target.type_specifier_list); | |
657 | if (ret) | |
658 | return ret; | |
1ee8e81d | 659 | nr_declarators = 0; |
3122e6f0 | 660 | bt_list_for_each_entry(iter, &node->u.typealias_target.type_declarators, siblings) { |
67905e42 MD |
661 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
662 | if (ret) | |
663 | return ret; | |
1ee8e81d MD |
664 | nr_declarators++; |
665 | } | |
666 | if (nr_declarators > 1) { | |
667 | fprintf(fd, "[error] %s: Too many declarators in typealias alias (%d, max is 1)\n", __func__, nr_declarators); | |
668 | ||
669 | return -EINVAL; | |
67905e42 MD |
670 | } |
671 | depth--; | |
672 | break; | |
1ee8e81d | 673 | } |
67905e42 | 674 | case NODE_TYPEALIAS_ALIAS: |
1ee8e81d MD |
675 | { |
676 | int nr_declarators; | |
677 | ||
67905e42 MD |
678 | switch (node->parent->type) { |
679 | case NODE_TYPEALIAS: | |
680 | break; /* OK */ | |
681 | default: | |
682 | goto errinval; | |
683 | } | |
684 | ||
685 | depth++; | |
3e11b713 MD |
686 | ret = _ctf_visitor_semantic_check(fd, depth + 1, |
687 | node->u.typealias_alias.type_specifier_list); | |
688 | if (ret) | |
689 | return ret; | |
1ee8e81d | 690 | nr_declarators = 0; |
3122e6f0 | 691 | bt_list_for_each_entry(iter, &node->u.typealias_alias.type_declarators, siblings) { |
67905e42 MD |
692 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
693 | if (ret) | |
694 | return ret; | |
1ee8e81d MD |
695 | nr_declarators++; |
696 | } | |
697 | if (nr_declarators > 1) { | |
698 | fprintf(fd, "[error] %s: Too many declarators in typealias alias (%d, max is 1)\n", __func__, nr_declarators); | |
699 | ||
700 | return -EINVAL; | |
67905e42 MD |
701 | } |
702 | depth--; | |
703 | break; | |
1ee8e81d | 704 | } |
67905e42 MD |
705 | case NODE_TYPEALIAS: |
706 | switch (node->parent->type) { | |
707 | case NODE_ROOT: | |
708 | case NODE_EVENT: | |
709 | case NODE_STREAM: | |
710 | case NODE_TRACE: | |
711 | case NODE_VARIANT: | |
712 | case NODE_STRUCT: | |
713 | break; /* OK */ | |
714 | ||
715 | case NODE_CTF_EXPRESSION: | |
716 | case NODE_UNARY_EXPRESSION: | |
717 | case NODE_TYPEDEF: | |
718 | case NODE_TYPEALIAS_TARGET: | |
719 | case NODE_TYPEALIAS_ALIAS: | |
720 | case NODE_TYPEALIAS: | |
721 | case NODE_STRUCT_OR_VARIANT_DECLARATION: | |
722 | case NODE_TYPE_SPECIFIER: | |
3e11b713 | 723 | case NODE_TYPE_SPECIFIER_LIST: |
67905e42 MD |
724 | case NODE_POINTER: |
725 | case NODE_TYPE_DECLARATOR: | |
726 | case NODE_FLOATING_POINT: | |
727 | case NODE_INTEGER: | |
728 | case NODE_STRING: | |
729 | case NODE_ENUMERATOR: | |
730 | case NODE_ENUM: | |
73d15916 | 731 | case NODE_CLOCK: |
f133896d | 732 | case NODE_CALLSITE: |
e2c76a4d | 733 | case NODE_ENV: |
67905e42 MD |
734 | default: |
735 | goto errinval; | |
736 | } | |
737 | ||
738 | ret = _ctf_visitor_semantic_check(fd, depth + 1, node->u.typealias.target); | |
739 | if (ret) | |
740 | return ret; | |
741 | ret = _ctf_visitor_semantic_check(fd, depth + 1, node->u.typealias.alias); | |
742 | if (ret) | |
743 | return ret; | |
744 | break; | |
745 | ||
3e11b713 MD |
746 | case NODE_TYPE_SPECIFIER_LIST: |
747 | ret = ctf_visitor_type_specifier_list(fd, depth, node); | |
748 | if (ret) | |
749 | return ret; | |
750 | break; | |
67905e42 MD |
751 | case NODE_TYPE_SPECIFIER: |
752 | ret = ctf_visitor_type_specifier(fd, depth, node); | |
753 | if (ret) | |
754 | return ret; | |
755 | break; | |
756 | case NODE_POINTER: | |
757 | switch (node->parent->type) { | |
758 | case NODE_TYPE_DECLARATOR: | |
759 | break; /* OK */ | |
760 | default: | |
761 | goto errinval; | |
762 | } | |
763 | break; | |
764 | case NODE_TYPE_DECLARATOR: | |
765 | ret = ctf_visitor_type_declarator(fd, depth, node); | |
766 | if (ret) | |
767 | return ret; | |
768 | break; | |
769 | ||
770 | case NODE_FLOATING_POINT: | |
771 | switch (node->parent->type) { | |
67905e42 | 772 | case NODE_TYPE_SPECIFIER: |
3e11b713 | 773 | break; /* OK */ |
67905e42 MD |
774 | default: |
775 | goto errinval; | |
776 | ||
777 | case NODE_UNARY_EXPRESSION: | |
778 | goto errperm; | |
779 | } | |
3122e6f0 | 780 | bt_list_for_each_entry(iter, &node->u.floating_point.expressions, siblings) { |
67905e42 MD |
781 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
782 | if (ret) | |
783 | return ret; | |
784 | } | |
785 | break; | |
786 | case NODE_INTEGER: | |
787 | switch (node->parent->type) { | |
67905e42 | 788 | case NODE_TYPE_SPECIFIER: |
3e11b713 | 789 | break; /* OK */ |
67905e42 MD |
790 | default: |
791 | goto errinval; | |
792 | ||
793 | } | |
794 | ||
3122e6f0 | 795 | bt_list_for_each_entry(iter, &node->u.integer.expressions, siblings) { |
67905e42 MD |
796 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
797 | if (ret) | |
798 | return ret; | |
799 | } | |
800 | break; | |
801 | case NODE_STRING: | |
802 | switch (node->parent->type) { | |
67905e42 | 803 | case NODE_TYPE_SPECIFIER: |
3e11b713 | 804 | break; /* OK */ |
67905e42 MD |
805 | default: |
806 | goto errinval; | |
807 | ||
808 | case NODE_UNARY_EXPRESSION: | |
809 | goto errperm; | |
810 | } | |
811 | ||
3122e6f0 | 812 | bt_list_for_each_entry(iter, &node->u.string.expressions, siblings) { |
67905e42 MD |
813 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
814 | if (ret) | |
815 | return ret; | |
816 | } | |
817 | break; | |
818 | case NODE_ENUMERATOR: | |
819 | switch (node->parent->type) { | |
820 | case NODE_ENUM: | |
821 | break; | |
822 | default: | |
823 | goto errinval; | |
824 | } | |
825 | /* | |
826 | * Enumerators are only allows to contain: | |
827 | * numeric unary expression | |
828 | * or num. unary exp. ... num. unary exp | |
829 | */ | |
830 | { | |
831 | int count = 0; | |
832 | ||
3122e6f0 | 833 | bt_list_for_each_entry(iter, &node->u.enumerator.values, |
67905e42 MD |
834 | siblings) { |
835 | switch (count++) { | |
836 | case 0: if (iter->type != NODE_UNARY_EXPRESSION | |
837 | || (iter->u.unary_expression.type != UNARY_SIGNED_CONSTANT | |
838 | && iter->u.unary_expression.type != UNARY_UNSIGNED_CONSTANT) | |
34f7b02c MD |
839 | || iter->u.unary_expression.link != UNARY_LINK_UNKNOWN) { |
840 | fprintf(fd, "[error]: semantic error (first unary expression of enumerator is unexpected)\n"); | |
67905e42 | 841 | goto errperm; |
34f7b02c | 842 | } |
67905e42 MD |
843 | break; |
844 | case 1: if (iter->type != NODE_UNARY_EXPRESSION | |
845 | || (iter->u.unary_expression.type != UNARY_SIGNED_CONSTANT | |
846 | && iter->u.unary_expression.type != UNARY_UNSIGNED_CONSTANT) | |
34f7b02c MD |
847 | || iter->u.unary_expression.link != UNARY_DOTDOTDOT) { |
848 | fprintf(fd, "[error]: semantic error (second unary expression of enumerator is unexpected)\n"); | |
67905e42 | 849 | goto errperm; |
34f7b02c | 850 | } |
67905e42 MD |
851 | break; |
852 | default: | |
853 | goto errperm; | |
854 | } | |
855 | } | |
856 | } | |
857 | ||
3122e6f0 | 858 | bt_list_for_each_entry(iter, &node->u.enumerator.values, siblings) { |
67905e42 MD |
859 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
860 | if (ret) | |
861 | return ret; | |
862 | } | |
863 | break; | |
864 | case NODE_ENUM: | |
865 | switch (node->parent->type) { | |
67905e42 | 866 | case NODE_TYPE_SPECIFIER: |
3e11b713 | 867 | break; /* OK */ |
67905e42 MD |
868 | default: |
869 | goto errinval; | |
870 | ||
871 | case NODE_UNARY_EXPRESSION: | |
872 | goto errperm; | |
873 | } | |
874 | ||
875 | depth++; | |
3e11b713 MD |
876 | ret = _ctf_visitor_semantic_check(fd, depth + 1, node->u._enum.container_type); |
877 | if (ret) | |
878 | return ret; | |
67905e42 | 879 | |
3122e6f0 | 880 | bt_list_for_each_entry(iter, &node->u._enum.enumerator_list, siblings) { |
67905e42 MD |
881 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
882 | if (ret) | |
883 | return ret; | |
884 | } | |
885 | depth--; | |
886 | break; | |
887 | case NODE_STRUCT_OR_VARIANT_DECLARATION: | |
888 | switch (node->parent->type) { | |
889 | case NODE_STRUCT: | |
890 | case NODE_VARIANT: | |
891 | break; | |
892 | default: | |
893 | goto errinval; | |
894 | } | |
3e11b713 MD |
895 | ret = _ctf_visitor_semantic_check(fd, depth + 1, |
896 | node->u.struct_or_variant_declaration.type_specifier_list); | |
897 | if (ret) | |
898 | return ret; | |
3122e6f0 | 899 | bt_list_for_each_entry(iter, &node->u.struct_or_variant_declaration.type_declarators, siblings) { |
67905e42 MD |
900 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
901 | if (ret) | |
902 | return ret; | |
903 | } | |
904 | break; | |
905 | case NODE_VARIANT: | |
906 | switch (node->parent->type) { | |
67905e42 | 907 | case NODE_TYPE_SPECIFIER: |
3e11b713 | 908 | break; /* OK */ |
67905e42 MD |
909 | default: |
910 | goto errinval; | |
911 | ||
912 | case NODE_UNARY_EXPRESSION: | |
913 | goto errperm; | |
914 | } | |
3122e6f0 | 915 | bt_list_for_each_entry(iter, &node->u.variant.declaration_list, siblings) { |
67905e42 MD |
916 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
917 | if (ret) | |
918 | return ret; | |
919 | } | |
920 | break; | |
921 | ||
922 | case NODE_STRUCT: | |
923 | switch (node->parent->type) { | |
67905e42 | 924 | case NODE_TYPE_SPECIFIER: |
3e11b713 | 925 | break; /* OK */ |
67905e42 MD |
926 | default: |
927 | goto errinval; | |
928 | ||
929 | case NODE_UNARY_EXPRESSION: | |
930 | goto errperm; | |
931 | } | |
3122e6f0 | 932 | bt_list_for_each_entry(iter, &node->u._struct.declaration_list, siblings) { |
67905e42 MD |
933 | ret = _ctf_visitor_semantic_check(fd, depth + 1, iter); |
934 | if (ret) | |
935 | return ret; | |
936 | } | |
937 | break; | |
938 | ||
939 | case NODE_UNKNOWN: | |
940 | default: | |
941 | fprintf(fd, "[error] %s: unknown node type %d\n", __func__, | |
942 | (int) node->type); | |
943 | return -EINVAL; | |
944 | } | |
945 | return ret; | |
946 | ||
947 | errinval: | |
34f7b02c MD |
948 | fprintf(fd, "[error] %s: incoherent parent type %s for node type %s\n", __func__, |
949 | node_type(node->parent), node_type(node)); | |
67905e42 MD |
950 | return -EINVAL; /* Incoherent structure */ |
951 | ||
952 | errperm: | |
34f7b02c MD |
953 | fprintf(fd, "[error] %s: semantic error (parent type %s for node type %s)\n", __func__, |
954 | node_type(node->parent), node_type(node)); | |
67905e42 MD |
955 | return -EPERM; /* Structure not allowed */ |
956 | } | |
957 | ||
958 | int ctf_visitor_semantic_check(FILE *fd, int depth, struct ctf_node *node) | |
959 | { | |
960 | int ret = 0; | |
961 | ||
962 | /* | |
963 | * First make sure we create the parent links for all children. Let's | |
964 | * take the safe route and recreate them at each validation, just in | |
965 | * case the structure has changed. | |
966 | */ | |
c8b219a3 | 967 | printf_verbose("CTF visitor: parent links creation... "); |
67905e42 MD |
968 | ret = ctf_visitor_parent_links(fd, depth, node); |
969 | if (ret) | |
970 | return ret; | |
c8b219a3 MD |
971 | printf_verbose("done.\n"); |
972 | printf_verbose("CTF visitor: semantic check... "); | |
34f7b02c MD |
973 | ret = _ctf_visitor_semantic_check(fd, depth, node); |
974 | if (ret) | |
975 | return ret; | |
c8b219a3 | 976 | printf_verbose("done.\n"); |
34f7b02c | 977 | return ret; |
67905e42 | 978 | } |