Yi Kong | 7bf2a68 | 2019-04-18 17:30:49 -0700 | [diff] [blame] | 1 | //== Checker.h - Registration mechanism for checkers -------------*- C++ -*--=// |
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // This file defines Checker, used to create and register checkers. |
| 10 | // |
| 11 | //===----------------------------------------------------------------------===// |
| 12 | |
| 13 | #ifndef LLVM_CLANG_STATICANALYZER_CORE_CHECKER_H |
| 14 | #define LLVM_CLANG_STATICANALYZER_CORE_CHECKER_H |
| 15 | |
| 16 | #include "clang/Analysis/ProgramPoint.h" |
| 17 | #include "clang/Basic/LangOptions.h" |
| 18 | #include "clang/StaticAnalyzer/Core/CheckerManager.h" |
| 19 | #include "clang/StaticAnalyzer/Core/PathSensitive/SVals.h" |
| 20 | #include "llvm/Support/Casting.h" |
| 21 | |
| 22 | namespace clang { |
| 23 | namespace ento { |
| 24 | class BugReporter; |
| 25 | |
| 26 | namespace check { |
| 27 | |
| 28 | template <typename DECL> |
| 29 | class ASTDecl { |
| 30 | template <typename CHECKER> |
| 31 | static void _checkDecl(void *checker, const Decl *D, AnalysisManager& mgr, |
| 32 | BugReporter &BR) { |
| 33 | ((const CHECKER *)checker)->checkASTDecl(cast<DECL>(D), mgr, BR); |
| 34 | } |
| 35 | |
| 36 | static bool _handlesDecl(const Decl *D) { |
| 37 | return isa<DECL>(D); |
| 38 | } |
| 39 | public: |
| 40 | template <typename CHECKER> |
| 41 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 42 | mgr._registerForDecl(CheckerManager::CheckDeclFunc(checker, |
| 43 | _checkDecl<CHECKER>), |
| 44 | _handlesDecl); |
| 45 | } |
| 46 | }; |
| 47 | |
| 48 | class ASTCodeBody { |
| 49 | template <typename CHECKER> |
| 50 | static void _checkBody(void *checker, const Decl *D, AnalysisManager& mgr, |
| 51 | BugReporter &BR) { |
| 52 | ((const CHECKER *)checker)->checkASTCodeBody(D, mgr, BR); |
| 53 | } |
| 54 | |
| 55 | public: |
| 56 | template <typename CHECKER> |
| 57 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 58 | mgr._registerForBody(CheckerManager::CheckDeclFunc(checker, |
| 59 | _checkBody<CHECKER>)); |
| 60 | } |
| 61 | }; |
| 62 | |
| 63 | class EndOfTranslationUnit { |
| 64 | template <typename CHECKER> |
| 65 | static void _checkEndOfTranslationUnit(void *checker, |
| 66 | const TranslationUnitDecl *TU, |
| 67 | AnalysisManager& mgr, |
| 68 | BugReporter &BR) { |
| 69 | ((const CHECKER *)checker)->checkEndOfTranslationUnit(TU, mgr, BR); |
| 70 | } |
| 71 | |
| 72 | public: |
| 73 | template <typename CHECKER> |
| 74 | static void _register(CHECKER *checker, CheckerManager &mgr){ |
| 75 | mgr._registerForEndOfTranslationUnit( |
| 76 | CheckerManager::CheckEndOfTranslationUnit(checker, |
| 77 | _checkEndOfTranslationUnit<CHECKER>)); |
| 78 | } |
| 79 | }; |
| 80 | |
| 81 | template <typename STMT> |
| 82 | class PreStmt { |
| 83 | template <typename CHECKER> |
| 84 | static void _checkStmt(void *checker, const Stmt *S, CheckerContext &C) { |
| 85 | ((const CHECKER *)checker)->checkPreStmt(cast<STMT>(S), C); |
| 86 | } |
| 87 | |
| 88 | static bool _handlesStmt(const Stmt *S) { |
| 89 | return isa<STMT>(S); |
| 90 | } |
| 91 | public: |
| 92 | template <typename CHECKER> |
| 93 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 94 | mgr._registerForPreStmt(CheckerManager::CheckStmtFunc(checker, |
| 95 | _checkStmt<CHECKER>), |
| 96 | _handlesStmt); |
| 97 | } |
| 98 | }; |
| 99 | |
| 100 | template <typename STMT> |
| 101 | class PostStmt { |
| 102 | template <typename CHECKER> |
| 103 | static void _checkStmt(void *checker, const Stmt *S, CheckerContext &C) { |
| 104 | ((const CHECKER *)checker)->checkPostStmt(cast<STMT>(S), C); |
| 105 | } |
| 106 | |
| 107 | static bool _handlesStmt(const Stmt *S) { |
| 108 | return isa<STMT>(S); |
| 109 | } |
| 110 | public: |
| 111 | template <typename CHECKER> |
| 112 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 113 | mgr._registerForPostStmt(CheckerManager::CheckStmtFunc(checker, |
| 114 | _checkStmt<CHECKER>), |
| 115 | _handlesStmt); |
| 116 | } |
| 117 | }; |
| 118 | |
| 119 | class PreObjCMessage { |
| 120 | template <typename CHECKER> |
| 121 | static void _checkObjCMessage(void *checker, const ObjCMethodCall &msg, |
| 122 | CheckerContext &C) { |
| 123 | ((const CHECKER *)checker)->checkPreObjCMessage(msg, C); |
| 124 | } |
| 125 | |
| 126 | public: |
| 127 | template <typename CHECKER> |
| 128 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 129 | mgr._registerForPreObjCMessage( |
| 130 | CheckerManager::CheckObjCMessageFunc(checker, _checkObjCMessage<CHECKER>)); |
| 131 | } |
| 132 | }; |
| 133 | |
| 134 | class ObjCMessageNil { |
| 135 | template <typename CHECKER> |
| 136 | static void _checkObjCMessage(void *checker, const ObjCMethodCall &msg, |
| 137 | CheckerContext &C) { |
| 138 | ((const CHECKER *)checker)->checkObjCMessageNil(msg, C); |
| 139 | } |
| 140 | |
| 141 | public: |
| 142 | template <typename CHECKER> |
| 143 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 144 | mgr._registerForObjCMessageNil( |
| 145 | CheckerManager::CheckObjCMessageFunc(checker, _checkObjCMessage<CHECKER>)); |
| 146 | } |
| 147 | }; |
| 148 | |
| 149 | class PostObjCMessage { |
| 150 | template <typename CHECKER> |
| 151 | static void _checkObjCMessage(void *checker, const ObjCMethodCall &msg, |
| 152 | CheckerContext &C) { |
| 153 | ((const CHECKER *)checker)->checkPostObjCMessage(msg, C); |
| 154 | } |
| 155 | |
| 156 | public: |
| 157 | template <typename CHECKER> |
| 158 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 159 | mgr._registerForPostObjCMessage( |
| 160 | CheckerManager::CheckObjCMessageFunc(checker, _checkObjCMessage<CHECKER>)); |
| 161 | } |
| 162 | }; |
| 163 | |
| 164 | class PreCall { |
| 165 | template <typename CHECKER> |
| 166 | static void _checkCall(void *checker, const CallEvent &msg, |
| 167 | CheckerContext &C) { |
| 168 | ((const CHECKER *)checker)->checkPreCall(msg, C); |
| 169 | } |
| 170 | |
| 171 | public: |
| 172 | template <typename CHECKER> |
| 173 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 174 | mgr._registerForPreCall( |
| 175 | CheckerManager::CheckCallFunc(checker, _checkCall<CHECKER>)); |
| 176 | } |
| 177 | }; |
| 178 | |
| 179 | class PostCall { |
| 180 | template <typename CHECKER> |
| 181 | static void _checkCall(void *checker, const CallEvent &msg, |
| 182 | CheckerContext &C) { |
| 183 | ((const CHECKER *)checker)->checkPostCall(msg, C); |
| 184 | } |
| 185 | |
| 186 | public: |
| 187 | template <typename CHECKER> |
| 188 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 189 | mgr._registerForPostCall( |
| 190 | CheckerManager::CheckCallFunc(checker, _checkCall<CHECKER>)); |
| 191 | } |
| 192 | }; |
| 193 | |
| 194 | class Location { |
| 195 | template <typename CHECKER> |
| 196 | static void _checkLocation(void *checker, |
| 197 | const SVal &location, bool isLoad, const Stmt *S, |
| 198 | CheckerContext &C) { |
| 199 | ((const CHECKER *)checker)->checkLocation(location, isLoad, S, C); |
| 200 | } |
| 201 | |
| 202 | public: |
| 203 | template <typename CHECKER> |
| 204 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 205 | mgr._registerForLocation( |
| 206 | CheckerManager::CheckLocationFunc(checker, _checkLocation<CHECKER>)); |
| 207 | } |
| 208 | }; |
| 209 | |
| 210 | class Bind { |
| 211 | template <typename CHECKER> |
| 212 | static void _checkBind(void *checker, |
| 213 | const SVal &location, const SVal &val, const Stmt *S, |
| 214 | CheckerContext &C) { |
| 215 | ((const CHECKER *)checker)->checkBind(location, val, S, C); |
| 216 | } |
| 217 | |
| 218 | public: |
| 219 | template <typename CHECKER> |
| 220 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 221 | mgr._registerForBind( |
| 222 | CheckerManager::CheckBindFunc(checker, _checkBind<CHECKER>)); |
| 223 | } |
| 224 | }; |
| 225 | |
| 226 | class EndAnalysis { |
| 227 | template <typename CHECKER> |
| 228 | static void _checkEndAnalysis(void *checker, ExplodedGraph &G, |
| 229 | BugReporter &BR, ExprEngine &Eng) { |
| 230 | ((const CHECKER *)checker)->checkEndAnalysis(G, BR, Eng); |
| 231 | } |
| 232 | |
| 233 | public: |
| 234 | template <typename CHECKER> |
| 235 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 236 | mgr._registerForEndAnalysis( |
| 237 | CheckerManager::CheckEndAnalysisFunc(checker, _checkEndAnalysis<CHECKER>)); |
| 238 | } |
| 239 | }; |
| 240 | |
| 241 | class BeginFunction { |
| 242 | template <typename CHECKER> |
| 243 | static void _checkBeginFunction(void *checker, CheckerContext &C) { |
| 244 | ((const CHECKER *)checker)->checkBeginFunction(C); |
| 245 | } |
| 246 | |
| 247 | public: |
| 248 | template <typename CHECKER> |
| 249 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 250 | mgr._registerForBeginFunction(CheckerManager::CheckBeginFunctionFunc( |
| 251 | checker, _checkBeginFunction<CHECKER>)); |
| 252 | } |
| 253 | }; |
| 254 | |
| 255 | class EndFunction { |
| 256 | template <typename CHECKER> |
| 257 | static void _checkEndFunction(void *checker, const ReturnStmt *RS, |
| 258 | CheckerContext &C) { |
| 259 | ((const CHECKER *)checker)->checkEndFunction(RS, C); |
| 260 | } |
| 261 | |
| 262 | public: |
| 263 | template <typename CHECKER> |
| 264 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 265 | mgr._registerForEndFunction( |
| 266 | CheckerManager::CheckEndFunctionFunc(checker, _checkEndFunction<CHECKER>)); |
| 267 | } |
| 268 | }; |
| 269 | |
| 270 | class BranchCondition { |
| 271 | template <typename CHECKER> |
| 272 | static void _checkBranchCondition(void *checker, const Stmt *Condition, |
| 273 | CheckerContext & C) { |
| 274 | ((const CHECKER *)checker)->checkBranchCondition(Condition, C); |
| 275 | } |
| 276 | |
| 277 | public: |
| 278 | template <typename CHECKER> |
| 279 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 280 | mgr._registerForBranchCondition( |
| 281 | CheckerManager::CheckBranchConditionFunc(checker, |
| 282 | _checkBranchCondition<CHECKER>)); |
| 283 | } |
| 284 | }; |
| 285 | |
| 286 | class NewAllocator { |
| 287 | template <typename CHECKER> |
| 288 | static void _checkNewAllocator(void *checker, const CXXNewExpr *NE, |
| 289 | SVal Target, CheckerContext &C) { |
| 290 | ((const CHECKER *)checker)->checkNewAllocator(NE, Target, C); |
| 291 | } |
| 292 | |
| 293 | public: |
| 294 | template <typename CHECKER> |
| 295 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 296 | mgr._registerForNewAllocator( |
| 297 | CheckerManager::CheckNewAllocatorFunc(checker, |
| 298 | _checkNewAllocator<CHECKER>)); |
| 299 | } |
| 300 | }; |
| 301 | |
| 302 | class LiveSymbols { |
| 303 | template <typename CHECKER> |
| 304 | static void _checkLiveSymbols(void *checker, ProgramStateRef state, |
| 305 | SymbolReaper &SR) { |
| 306 | ((const CHECKER *)checker)->checkLiveSymbols(state, SR); |
| 307 | } |
| 308 | |
| 309 | public: |
| 310 | template <typename CHECKER> |
| 311 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 312 | mgr._registerForLiveSymbols( |
| 313 | CheckerManager::CheckLiveSymbolsFunc(checker, _checkLiveSymbols<CHECKER>)); |
| 314 | } |
| 315 | }; |
| 316 | |
| 317 | class DeadSymbols { |
| 318 | template <typename CHECKER> |
| 319 | static void _checkDeadSymbols(void *checker, |
| 320 | SymbolReaper &SR, CheckerContext &C) { |
| 321 | ((const CHECKER *)checker)->checkDeadSymbols(SR, C); |
| 322 | } |
| 323 | |
| 324 | public: |
| 325 | template <typename CHECKER> |
| 326 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 327 | mgr._registerForDeadSymbols( |
| 328 | CheckerManager::CheckDeadSymbolsFunc(checker, _checkDeadSymbols<CHECKER>)); |
| 329 | } |
| 330 | }; |
| 331 | |
| 332 | class RegionChanges { |
| 333 | template <typename CHECKER> |
| 334 | static ProgramStateRef |
| 335 | _checkRegionChanges(void *checker, |
| 336 | ProgramStateRef state, |
| 337 | const InvalidatedSymbols *invalidated, |
| 338 | ArrayRef<const MemRegion *> Explicits, |
| 339 | ArrayRef<const MemRegion *> Regions, |
| 340 | const LocationContext *LCtx, |
| 341 | const CallEvent *Call) { |
| 342 | return ((const CHECKER *) checker)->checkRegionChanges(state, invalidated, |
| 343 | Explicits, Regions, |
| 344 | LCtx, Call); |
| 345 | } |
| 346 | |
| 347 | public: |
| 348 | template <typename CHECKER> |
| 349 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 350 | mgr._registerForRegionChanges( |
| 351 | CheckerManager::CheckRegionChangesFunc(checker, |
| 352 | _checkRegionChanges<CHECKER>)); |
| 353 | } |
| 354 | }; |
| 355 | |
| 356 | class PointerEscape { |
| 357 | template <typename CHECKER> |
| 358 | static ProgramStateRef |
| 359 | _checkPointerEscape(void *Checker, |
| 360 | ProgramStateRef State, |
| 361 | const InvalidatedSymbols &Escaped, |
| 362 | const CallEvent *Call, |
| 363 | PointerEscapeKind Kind, |
| 364 | RegionAndSymbolInvalidationTraits *ETraits) { |
| 365 | |
| 366 | if (!ETraits) |
| 367 | return ((const CHECKER *)Checker)->checkPointerEscape(State, |
| 368 | Escaped, |
| 369 | Call, |
| 370 | Kind); |
| 371 | |
| 372 | InvalidatedSymbols RegularEscape; |
| 373 | for (InvalidatedSymbols::const_iterator I = Escaped.begin(), |
| 374 | E = Escaped.end(); I != E; ++I) |
| 375 | if (!ETraits->hasTrait(*I, |
| 376 | RegionAndSymbolInvalidationTraits::TK_PreserveContents) && |
| 377 | !ETraits->hasTrait(*I, |
| 378 | RegionAndSymbolInvalidationTraits::TK_SuppressEscape)) |
| 379 | RegularEscape.insert(*I); |
| 380 | |
| 381 | if (RegularEscape.empty()) |
| 382 | return State; |
| 383 | |
| 384 | return ((const CHECKER *)Checker)->checkPointerEscape(State, |
| 385 | RegularEscape, |
| 386 | Call, |
| 387 | Kind); |
| 388 | } |
| 389 | |
| 390 | public: |
| 391 | template <typename CHECKER> |
| 392 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 393 | mgr._registerForPointerEscape( |
| 394 | CheckerManager::CheckPointerEscapeFunc(checker, |
| 395 | _checkPointerEscape<CHECKER>)); |
| 396 | } |
| 397 | }; |
| 398 | |
| 399 | class ConstPointerEscape { |
| 400 | template <typename CHECKER> |
| 401 | static ProgramStateRef |
| 402 | _checkConstPointerEscape(void *Checker, |
| 403 | ProgramStateRef State, |
| 404 | const InvalidatedSymbols &Escaped, |
| 405 | const CallEvent *Call, |
| 406 | PointerEscapeKind Kind, |
| 407 | RegionAndSymbolInvalidationTraits *ETraits) { |
| 408 | |
| 409 | if (!ETraits) |
| 410 | return State; |
| 411 | |
| 412 | InvalidatedSymbols ConstEscape; |
| 413 | for (InvalidatedSymbols::const_iterator I = Escaped.begin(), |
| 414 | E = Escaped.end(); I != E; ++I) |
| 415 | if (ETraits->hasTrait(*I, |
| 416 | RegionAndSymbolInvalidationTraits::TK_PreserveContents) && |
| 417 | !ETraits->hasTrait(*I, |
| 418 | RegionAndSymbolInvalidationTraits::TK_SuppressEscape)) |
| 419 | ConstEscape.insert(*I); |
| 420 | |
| 421 | if (ConstEscape.empty()) |
| 422 | return State; |
| 423 | |
| 424 | return ((const CHECKER *)Checker)->checkConstPointerEscape(State, |
| 425 | ConstEscape, |
| 426 | Call, |
| 427 | Kind); |
| 428 | } |
| 429 | |
| 430 | public: |
| 431 | template <typename CHECKER> |
| 432 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 433 | mgr._registerForPointerEscape( |
| 434 | CheckerManager::CheckPointerEscapeFunc(checker, |
| 435 | _checkConstPointerEscape<CHECKER>)); |
| 436 | } |
| 437 | }; |
| 438 | |
| 439 | |
| 440 | template <typename EVENT> |
| 441 | class Event { |
| 442 | template <typename CHECKER> |
| 443 | static void _checkEvent(void *checker, const void *event) { |
| 444 | ((const CHECKER *)checker)->checkEvent(*(const EVENT *)event); |
| 445 | } |
| 446 | public: |
| 447 | template <typename CHECKER> |
| 448 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 449 | mgr._registerListenerForEvent<EVENT>( |
| 450 | CheckerManager::CheckEventFunc(checker, _checkEvent<CHECKER>)); |
| 451 | } |
| 452 | }; |
| 453 | |
| 454 | } // end check namespace |
| 455 | |
| 456 | namespace eval { |
| 457 | |
| 458 | class Assume { |
| 459 | template <typename CHECKER> |
| 460 | static ProgramStateRef _evalAssume(void *checker, |
| 461 | ProgramStateRef state, |
| 462 | const SVal &cond, |
| 463 | bool assumption) { |
| 464 | return ((const CHECKER *)checker)->evalAssume(state, cond, assumption); |
| 465 | } |
| 466 | |
| 467 | public: |
| 468 | template <typename CHECKER> |
| 469 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 470 | mgr._registerForEvalAssume( |
| 471 | CheckerManager::EvalAssumeFunc(checker, _evalAssume<CHECKER>)); |
| 472 | } |
| 473 | }; |
| 474 | |
| 475 | class Call { |
| 476 | template <typename CHECKER> |
| 477 | static bool _evalCall(void *checker, const CallExpr *CE, CheckerContext &C) { |
| 478 | return ((const CHECKER *)checker)->evalCall(CE, C); |
| 479 | } |
| 480 | |
| 481 | public: |
| 482 | template <typename CHECKER> |
| 483 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 484 | mgr._registerForEvalCall( |
| 485 | CheckerManager::EvalCallFunc(checker, _evalCall<CHECKER>)); |
| 486 | } |
| 487 | }; |
| 488 | |
| 489 | } // end eval namespace |
| 490 | |
| 491 | class CheckerBase : public ProgramPointTag { |
| 492 | CheckName Name; |
| 493 | friend class ::clang::ento::CheckerManager; |
| 494 | |
| 495 | public: |
| 496 | StringRef getTagDescription() const override; |
| 497 | CheckName getCheckName() const; |
| 498 | |
| 499 | /// See CheckerManager::runCheckersForPrintState. |
| 500 | virtual void printState(raw_ostream &Out, ProgramStateRef State, |
| 501 | const char *NL, const char *Sep) const { } |
| 502 | }; |
| 503 | |
| 504 | /// Dump checker name to stream. |
| 505 | raw_ostream& operator<<(raw_ostream &Out, const CheckerBase &Checker); |
| 506 | |
| 507 | /// Tag that can use a checker name as a message provider |
| 508 | /// (see SimpleProgramPointTag). |
| 509 | class CheckerProgramPointTag : public SimpleProgramPointTag { |
| 510 | public: |
| 511 | CheckerProgramPointTag(StringRef CheckerName, StringRef Msg); |
| 512 | CheckerProgramPointTag(const CheckerBase *Checker, StringRef Msg); |
| 513 | }; |
| 514 | |
| 515 | template <typename CHECK1, typename... CHECKs> |
| 516 | class Checker : public CHECK1, public CHECKs..., public CheckerBase { |
| 517 | public: |
| 518 | template <typename CHECKER> |
| 519 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 520 | CHECK1::_register(checker, mgr); |
| 521 | Checker<CHECKs...>::_register(checker, mgr); |
| 522 | } |
| 523 | }; |
| 524 | |
| 525 | template <typename CHECK1> |
| 526 | class Checker<CHECK1> : public CHECK1, public CheckerBase { |
| 527 | public: |
| 528 | template <typename CHECKER> |
| 529 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 530 | CHECK1::_register(checker, mgr); |
| 531 | } |
| 532 | }; |
| 533 | |
| 534 | template <typename EVENT> |
| 535 | class EventDispatcher { |
| 536 | CheckerManager *Mgr; |
| 537 | public: |
| 538 | EventDispatcher() : Mgr(nullptr) { } |
| 539 | |
| 540 | template <typename CHECKER> |
| 541 | static void _register(CHECKER *checker, CheckerManager &mgr) { |
| 542 | mgr._registerDispatcherForEvent<EVENT>(); |
| 543 | static_cast<EventDispatcher<EVENT> *>(checker)->Mgr = &mgr; |
| 544 | } |
| 545 | |
| 546 | void dispatchEvent(const EVENT &event) const { |
| 547 | Mgr->_dispatchEvent(event); |
| 548 | } |
| 549 | }; |
| 550 | |
| 551 | /// We dereferenced a location that may be null. |
| 552 | struct ImplicitNullDerefEvent { |
| 553 | SVal Location; |
| 554 | bool IsLoad; |
| 555 | ExplodedNode *SinkNode; |
| 556 | BugReporter *BR; |
| 557 | // When true, the dereference is in the source code directly. When false, the |
| 558 | // dereference might happen later (for example pointer passed to a parameter |
| 559 | // that is marked with nonnull attribute.) |
| 560 | bool IsDirectDereference; |
| 561 | |
| 562 | static int Tag; |
| 563 | }; |
| 564 | |
| 565 | /// A helper class which wraps a boolean value set to false by default. |
| 566 | /// |
| 567 | /// This class should behave exactly like 'bool' except that it doesn't need to |
| 568 | /// be explicitly initialized. |
| 569 | struct DefaultBool { |
| 570 | bool val; |
| 571 | DefaultBool() : val(false) {} |
| 572 | /*implicit*/ operator bool&() { return val; } |
| 573 | /*implicit*/ operator const bool&() const { return val; } |
| 574 | DefaultBool &operator=(bool b) { val = b; return *this; } |
| 575 | }; |
| 576 | |
| 577 | } // end ento namespace |
| 578 | |
| 579 | } // end clang namespace |
| 580 | |
| 581 | #endif |