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