CheckerManager.h revision 233e26acc0ff2a1098f4c813f69286fce840a422 
1//===--- CheckerManager.h - Static Analyzer Checker Manager -----*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// Defines the Static Analyzer Checker Manager.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_CLANG_SA_CORE_CHECKERMANAGER_H
15#define LLVM_CLANG_SA_CORE_CHECKERMANAGER_H
16
17#include "clang/Analysis/ProgramPoint.h"
18#include "clang/Basic/LangOptions.h"
19#include "clang/StaticAnalyzer/Core/PathSensitive/Store.h"
20#include "llvm/ADT/DenseMap.h"
21#include "llvm/ADT/FoldingSet.h"
22#include "llvm/ADT/SmallVector.h"
23#include <vector>
24
25namespace clang {
26  class Decl;
27  class Stmt;
28  class CallExpr;
29
30namespace ento {
31  class CheckerBase;
32  class ExprEngine;
33  class AnalysisManager;
34  class BugReporter;
35  class CheckerContext;
36  class SimpleCall;
37  class ObjCMethodCall;
38  class SVal;
39  class ExplodedNode;
40  class ExplodedNodeSet;
41  class ExplodedGraph;
42  class ProgramState;
43  class NodeBuilder;
44  struct NodeBuilderContext;
45  class MemRegion;
46  class SymbolReaper;
47
48template <typename T> class CheckerFn;
49
50template <typename RET, typename P1, typename P2, typename P3, typename P4,
51          typename P5>
52class CheckerFn<RET(P1, P2, P3, P4, P5)> {
53  typedef RET (*Func)(void *, P1, P2, P3, P4, P5);
54  Func Fn;
55public:
56  CheckerBase *Checker;
57  CheckerFn(CheckerBase *checker, Func fn) : Fn(fn), Checker(checker) { }
58  RET operator()(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) const {
59    return Fn(Checker, p1, p2, p3, p4, p5);
60  }
61};
62
63template <typename RET, typename P1, typename P2, typename P3, typename P4>
64class CheckerFn<RET(P1, P2, P3, P4)> {
65  typedef RET (*Func)(void *, P1, P2, P3, P4);
66  Func Fn;
67public:
68  CheckerBase *Checker;
69  CheckerFn(CheckerBase *checker, Func fn) : Fn(fn), Checker(checker) { }
70  RET operator()(P1 p1, P2 p2, P3 p3, P4 p4) const {
71    return Fn(Checker, p1, p2, p3, p4);
72  }
73};
74
75template <typename RET, typename P1, typename P2, typename P3>
76class CheckerFn<RET(P1, P2, P3)> {
77  typedef RET (*Func)(void *, P1, P2, P3);
78  Func Fn;
79public:
80  CheckerBase *Checker;
81  CheckerFn(CheckerBase *checker, Func fn) : Fn(fn), Checker(checker) { }
82  RET operator()(P1 p1, P2 p2, P3 p3) const { return Fn(Checker, p1, p2, p3); }
83};
84
85template <typename RET, typename P1, typename P2>
86class CheckerFn<RET(P1, P2)> {
87  typedef RET (*Func)(void *, P1, P2);
88  Func Fn;
89public:
90  CheckerBase *Checker;
91  CheckerFn(CheckerBase *checker, Func fn) : Fn(fn), Checker(checker) { }
92  RET operator()(P1 p1, P2 p2) const { return Fn(Checker, p1, p2); }
93};
94
95template <typename RET, typename P1>
96class CheckerFn<RET(P1)> {
97  typedef RET (*Func)(void *, P1);
98  Func Fn;
99public:
100  CheckerBase *Checker;
101  CheckerFn(CheckerBase *checker, Func fn) : Fn(fn), Checker(checker) { }
102  RET operator()(P1 p1) const { return Fn(Checker, p1); }
103};
104
105template <typename RET>
106class CheckerFn<RET()> {
107  typedef RET (*Func)(void *);
108  Func Fn;
109public:
110  CheckerBase *Checker;
111  CheckerFn(CheckerBase *checker, Func fn) : Fn(fn), Checker(checker) { }
112  RET operator()() const { return Fn(Checker); }
113};
114
115/// \brief Describes the different reasons a pointer escapes
116/// during analysis.
117enum PointerEscapeKind {
118  /// A pointer escapes due to binding its value to a location
119  /// that the analyzer cannot track.
120  PSK_EscapeOnBind,
121
122  /// The pointer has been passed to a function call directly.
123  PSK_DirectEscapeOnCall,
124
125  /// The pointer has been passed to a function indirectly.
126  /// For example, the pointer is accessible through an
127  /// argument to a function.
128  PSK_IndirectEscapeOnCall,
129
130  /// The reason for pointer escape is unknown. For example,
131  /// a region containing this pointer is invalidated.
132  PSK_EscapeOther
133};
134
135class CheckerManager {
136  const LangOptions LangOpts;
137
138public:
139  CheckerManager(const LangOptions &langOpts) : LangOpts(langOpts) { }
140  ~CheckerManager();
141
142  bool hasPathSensitiveCheckers() const;
143
144  void finishedCheckerRegistration();
145
146  const LangOptions &getLangOpts() const { return LangOpts; }
147
148  typedef CheckerBase *CheckerRef;
149  typedef const void *CheckerTag;
150  typedef CheckerFn<void ()> CheckerDtor;
151
152//===----------------------------------------------------------------------===//
153// registerChecker
154//===----------------------------------------------------------------------===//
155
156  /// \brief Used to register checkers.
157  ///
158  /// \returns a pointer to the checker object.
159  template <typename CHECKER>
160  CHECKER *registerChecker() {
161    CheckerTag tag = getTag<CHECKER>();
162    CheckerRef &ref = CheckerTags[tag];
163    if (ref)
164      return static_cast<CHECKER *>(ref); // already registered.
165
166    CHECKER *checker = new CHECKER();
167    CheckerDtors.push_back(CheckerDtor(checker, destruct<CHECKER>));
168    CHECKER::_register(checker, *this);
169    ref = checker;
170    return checker;
171  }
172
173//===----------------------------------------------------------------------===//
174// Functions for running checkers for AST traversing..
175//===----------------------------------------------------------------------===//
176
177  /// \brief Run checkers handling Decls.
178  void runCheckersOnASTDecl(const Decl *D, AnalysisManager& mgr,
179                            BugReporter &BR);
180
181  /// \brief Run checkers handling Decls containing a Stmt body.
182  void runCheckersOnASTBody(const Decl *D, AnalysisManager& mgr,
183                            BugReporter &BR);
184
185//===----------------------------------------------------------------------===//
186// Functions for running checkers for path-sensitive checking.
187//===----------------------------------------------------------------------===//
188
189  /// \brief Run checkers for pre-visiting Stmts.
190  ///
191  /// The notification is performed for every explored CFGElement, which does
192  /// not include the control flow statements such as IfStmt.
193  ///
194  /// \sa runCheckersForBranchCondition, runCheckersForPostStmt
195  void runCheckersForPreStmt(ExplodedNodeSet &Dst,
196                             const ExplodedNodeSet &Src,
197                             const Stmt *S,
198                             ExprEngine &Eng) {
199    runCheckersForStmt(/*isPreVisit=*/true, Dst, Src, S, Eng);
200  }
201
202  /// \brief Run checkers for post-visiting Stmts.
203  ///
204  /// The notification is performed for every explored CFGElement, which does
205  /// not include the control flow statements such as IfStmt.
206  ///
207  /// \sa runCheckersForBranchCondition, runCheckersForPreStmt
208  void runCheckersForPostStmt(ExplodedNodeSet &Dst,
209                              const ExplodedNodeSet &Src,
210                              const Stmt *S,
211                              ExprEngine &Eng,
212                              bool wasInlined = false) {
213    runCheckersForStmt(/*isPreVisit=*/false, Dst, Src, S, Eng, wasInlined);
214  }
215
216  /// \brief Run checkers for visiting Stmts.
217  void runCheckersForStmt(bool isPreVisit,
218                          ExplodedNodeSet &Dst, const ExplodedNodeSet &Src,
219                          const Stmt *S, ExprEngine &Eng,
220                          bool wasInlined = false);
221
222  /// \brief Run checkers for pre-visiting obj-c messages.
223  void runCheckersForPreObjCMessage(ExplodedNodeSet &Dst,
224                                    const ExplodedNodeSet &Src,
225                                    const ObjCMethodCall &msg,
226                                    ExprEngine &Eng) {
227    runCheckersForObjCMessage(/*isPreVisit=*/true, Dst, Src, msg, Eng);
228  }
229
230  /// \brief Run checkers for post-visiting obj-c messages.
231  void runCheckersForPostObjCMessage(ExplodedNodeSet &Dst,
232                                     const ExplodedNodeSet &Src,
233                                     const ObjCMethodCall &msg,
234                                     ExprEngine &Eng,
235                                     bool wasInlined = false) {
236    runCheckersForObjCMessage(/*isPreVisit=*/false, Dst, Src, msg, Eng,
237                              wasInlined);
238  }
239
240  /// \brief Run checkers for visiting obj-c messages.
241  void runCheckersForObjCMessage(bool isPreVisit,
242                                 ExplodedNodeSet &Dst,
243                                 const ExplodedNodeSet &Src,
244                                 const ObjCMethodCall &msg, ExprEngine &Eng,
245                                 bool wasInlined = false);
246
247  /// \brief Run checkers for pre-visiting obj-c messages.
248  void runCheckersForPreCall(ExplodedNodeSet &Dst, const ExplodedNodeSet &Src,
249                             const CallEvent &Call, ExprEngine &Eng) {
250    runCheckersForCallEvent(/*isPreVisit=*/true, Dst, Src, Call, Eng);
251  }
252
253  /// \brief Run checkers for post-visiting obj-c messages.
254  void runCheckersForPostCall(ExplodedNodeSet &Dst, const ExplodedNodeSet &Src,
255                              const CallEvent &Call, ExprEngine &Eng,
256                              bool wasInlined = false) {
257    runCheckersForCallEvent(/*isPreVisit=*/false, Dst, Src, Call, Eng,
258                            wasInlined);
259  }
260
261  /// \brief Run checkers for visiting obj-c messages.
262  void runCheckersForCallEvent(bool isPreVisit, ExplodedNodeSet &Dst,
263                               const ExplodedNodeSet &Src,
264                               const CallEvent &Call, ExprEngine &Eng,
265                               bool wasInlined = false);
266
267  /// \brief Run checkers for load/store of a location.
268  void runCheckersForLocation(ExplodedNodeSet &Dst,
269                              const ExplodedNodeSet &Src,
270                              SVal location,
271                              bool isLoad,
272                              const Stmt *NodeEx,
273                              const Stmt *BoundEx,
274                              ExprEngine &Eng);
275
276  /// \brief Run checkers for binding of a value to a location.
277  void runCheckersForBind(ExplodedNodeSet &Dst,
278                          const ExplodedNodeSet &Src,
279                          SVal location, SVal val,
280                          const Stmt *S, ExprEngine &Eng,
281                          const ProgramPoint &PP);
282
283  /// \brief Run checkers for end of analysis.
284  void runCheckersForEndAnalysis(ExplodedGraph &G, BugReporter &BR,
285                                 ExprEngine &Eng);
286
287  /// \brief Run checkers on end of function.
288  void runCheckersForEndFunction(NodeBuilderContext &BC,
289                                 ExplodedNodeSet &Dst,
290                                 ExplodedNode *Pred,
291                                 ExprEngine &Eng);
292
293  /// \brief Run checkers for branch condition.
294  void runCheckersForBranchCondition(const Stmt *condition,
295                                     ExplodedNodeSet &Dst, ExplodedNode *Pred,
296                                     ExprEngine &Eng);
297
298  /// \brief Run checkers for live symbols.
299  ///
300  /// Allows modifying SymbolReaper object. For example, checkers can explicitly
301  /// register symbols of interest as live. These symbols will not be marked
302  /// dead and removed.
303  void runCheckersForLiveSymbols(ProgramStateRef state,
304                                 SymbolReaper &SymReaper);
305
306  /// \brief Run checkers for dead symbols.
307  ///
308  /// Notifies checkers when symbols become dead. For example, this allows
309  /// checkers to aggressively clean up/reduce the checker state and produce
310  /// precise diagnostics.
311  void runCheckersForDeadSymbols(ExplodedNodeSet &Dst,
312                                 const ExplodedNodeSet &Src,
313                                 SymbolReaper &SymReaper, const Stmt *S,
314                                 ExprEngine &Eng,
315                                 ProgramPoint::Kind K);
316
317  /// \brief True if at least one checker wants to check region changes.
318  bool wantsRegionChangeUpdate(ProgramStateRef state);
319
320  /// \brief Run checkers for region changes.
321  ///
322  /// This corresponds to the check::RegionChanges callback.
323  /// \param state The current program state.
324  /// \param invalidated A set of all symbols potentially touched by the change.
325  /// \param ExplicitRegions The regions explicitly requested for invalidation.
326  ///   For example, in the case of a function call, these would be arguments.
327  /// \param Regions The transitive closure of accessible regions,
328  ///   i.e. all regions that may have been touched by this change.
329  /// \param Call The call expression wrapper if the regions are invalidated
330  ///   by a call.
331  ProgramStateRef
332  runCheckersForRegionChanges(ProgramStateRef state,
333                              const InvalidatedSymbols *invalidated,
334                              ArrayRef<const MemRegion *> ExplicitRegions,
335                              ArrayRef<const MemRegion *> Regions,
336                              const CallEvent *Call);
337
338  /// \brief Run checkers when pointers escape.
339  ///
340  /// This notifies the checkers about pointer escape, which occurs whenever
341  /// the analyzer cannot track the symbol any more. For example, as a
342  /// result of assigning a pointer into a global or when it's passed to a
343  /// function call the analyzer cannot model.
344  ///
345  /// \param State The state at the point of escape.
346  /// \param Escaped The list of escaped symbols.
347  /// \param Call The corresponding CallEvent, if the symbols escape as
348  ///        parameters to the given call.
349  /// \returns Checkers can modify the state by returning a new one.
350  ProgramStateRef
351  runCheckersForPointerEscape(ProgramStateRef State,
352                              const InvalidatedSymbols &Escaped,
353                              const CallEvent *Call,
354                              PointerEscapeKind Kind);
355
356  /// \brief Run checkers for handling assumptions on symbolic values.
357  ProgramStateRef runCheckersForEvalAssume(ProgramStateRef state,
358                                           SVal Cond, bool Assumption);
359
360  /// \brief Run checkers for evaluating a call.
361  ///
362  /// Warning: Currently, the CallEvent MUST come from a CallExpr!
363  void runCheckersForEvalCall(ExplodedNodeSet &Dst,
364                              const ExplodedNodeSet &Src,
365                              const CallEvent &CE, ExprEngine &Eng);
366
367  /// \brief Run checkers for the entire Translation Unit.
368  void runCheckersOnEndOfTranslationUnit(const TranslationUnitDecl *TU,
369                                         AnalysisManager &mgr,
370                                         BugReporter &BR);
371
372  /// \brief Run checkers for debug-printing a ProgramState.
373  ///
374  /// Unlike most other callbacks, any checker can simply implement the virtual
375  /// method CheckerBase::printState if it has custom data to print.
376  /// \param Out The output stream
377  /// \param State The state being printed
378  /// \param NL The preferred representation of a newline.
379  /// \param Sep The preferred separator between different kinds of data.
380  void runCheckersForPrintState(raw_ostream &Out, ProgramStateRef State,
381                                const char *NL, const char *Sep);
382
383//===----------------------------------------------------------------------===//
384// Internal registration functions for AST traversing.
385//===----------------------------------------------------------------------===//
386
387  // Functions used by the registration mechanism, checkers should not touch
388  // these directly.
389
390  typedef CheckerFn<void (const Decl *, AnalysisManager&, BugReporter &)>
391      CheckDeclFunc;
392
393  typedef bool (*HandlesDeclFunc)(const Decl *D);
394  void _registerForDecl(CheckDeclFunc checkfn, HandlesDeclFunc isForDeclFn);
395
396  void _registerForBody(CheckDeclFunc checkfn);
397
398//===----------------------------------------------------------------------===//
399// Internal registration functions for path-sensitive checking.
400//===----------------------------------------------------------------------===//
401
402  typedef CheckerFn<void (const Stmt *, CheckerContext &)> CheckStmtFunc;
403
404  typedef CheckerFn<void (const ObjCMethodCall &, CheckerContext &)>
405      CheckObjCMessageFunc;
406
407  typedef CheckerFn<void (const CallEvent &, CheckerContext &)>
408      CheckCallFunc;
409
410  typedef CheckerFn<void (const SVal &location, bool isLoad,
411                          const Stmt *S,
412                          CheckerContext &)>
413      CheckLocationFunc;
414
415  typedef CheckerFn<void (const SVal &location, const SVal &val,
416                          const Stmt *S, CheckerContext &)>
417      CheckBindFunc;
418
419  typedef CheckerFn<void (ExplodedGraph &, BugReporter &, ExprEngine &)>
420      CheckEndAnalysisFunc;
421
422  typedef CheckerFn<void (CheckerContext &)>
423      CheckEndFunctionFunc;
424
425  typedef CheckerFn<void (const Stmt *, CheckerContext &)>
426      CheckBranchConditionFunc;
427
428  typedef CheckerFn<void (SymbolReaper &, CheckerContext &)>
429      CheckDeadSymbolsFunc;
430
431  typedef CheckerFn<void (ProgramStateRef,SymbolReaper &)> CheckLiveSymbolsFunc;
432
433  typedef CheckerFn<ProgramStateRef (ProgramStateRef,
434                                const InvalidatedSymbols *symbols,
435                                ArrayRef<const MemRegion *> ExplicitRegions,
436                                ArrayRef<const MemRegion *> Regions,
437                                const CallEvent *Call)>
438      CheckRegionChangesFunc;
439
440  typedef CheckerFn<bool (ProgramStateRef)> WantsRegionChangeUpdateFunc;
441
442  typedef CheckerFn<ProgramStateRef (ProgramStateRef,
443                                     const InvalidatedSymbols &Escaped,
444                                     const CallEvent *Call,
445                                     PointerEscapeKind Kind)>
446      CheckPointerEscapeFunc;
447
448  typedef CheckerFn<ProgramStateRef (ProgramStateRef,
449                                          const SVal &cond, bool assumption)>
450      EvalAssumeFunc;
451
452  typedef CheckerFn<bool (const CallExpr *, CheckerContext &)>
453      EvalCallFunc;
454
455  typedef CheckerFn<void (const TranslationUnitDecl *,
456                          AnalysisManager&, BugReporter &)>
457      CheckEndOfTranslationUnit;
458
459  typedef bool (*HandlesStmtFunc)(const Stmt *D);
460  void _registerForPreStmt(CheckStmtFunc checkfn,
461                           HandlesStmtFunc isForStmtFn);
462  void _registerForPostStmt(CheckStmtFunc checkfn,
463                            HandlesStmtFunc isForStmtFn);
464
465  void _registerForPreObjCMessage(CheckObjCMessageFunc checkfn);
466  void _registerForPostObjCMessage(CheckObjCMessageFunc checkfn);
467
468  void _registerForPreCall(CheckCallFunc checkfn);
469  void _registerForPostCall(CheckCallFunc checkfn);
470
471  void _registerForLocation(CheckLocationFunc checkfn);
472
473  void _registerForBind(CheckBindFunc checkfn);
474
475  void _registerForEndAnalysis(CheckEndAnalysisFunc checkfn);
476
477  void _registerForEndFunction(CheckEndFunctionFunc checkfn);
478
479  void _registerForBranchCondition(CheckBranchConditionFunc checkfn);
480
481  void _registerForLiveSymbols(CheckLiveSymbolsFunc checkfn);
482
483  void _registerForDeadSymbols(CheckDeadSymbolsFunc checkfn);
484
485  void _registerForRegionChanges(CheckRegionChangesFunc checkfn,
486                                 WantsRegionChangeUpdateFunc wantUpdateFn);
487
488  void _registerForPointerEscape(CheckPointerEscapeFunc checkfn);
489
490  void _registerForEvalAssume(EvalAssumeFunc checkfn);
491
492  void _registerForEvalCall(EvalCallFunc checkfn);
493
494  void _registerForEndOfTranslationUnit(CheckEndOfTranslationUnit checkfn);
495
496//===----------------------------------------------------------------------===//
497// Internal registration functions for events.
498//===----------------------------------------------------------------------===//
499
500  typedef void *EventTag;
501  typedef CheckerFn<void (const void *event)> CheckEventFunc;
502
503  template <typename EVENT>
504  void _registerListenerForEvent(CheckEventFunc checkfn) {
505    EventInfo &info = Events[getTag<EVENT>()];
506    info.Checkers.push_back(checkfn);
507  }
508
509  template <typename EVENT>
510  void _registerDispatcherForEvent() {
511    EventInfo &info = Events[getTag<EVENT>()];
512    info.HasDispatcher = true;
513  }
514
515  template <typename EVENT>
516  void _dispatchEvent(const EVENT &event) const {
517    EventsTy::const_iterator I = Events.find(getTag<EVENT>());
518    if (I == Events.end())
519      return;
520    const EventInfo &info = I->second;
521    for (unsigned i = 0, e = info.Checkers.size(); i != e; ++i)
522      info.Checkers[i](&event);
523  }
524
525//===----------------------------------------------------------------------===//
526// Implementation details.
527//===----------------------------------------------------------------------===//
528
529private:
530  template <typename CHECKER>
531  static void destruct(void *obj) { delete static_cast<CHECKER *>(obj); }
532
533  template <typename T>
534  static void *getTag() { static int tag; return &tag; }
535
536  llvm::DenseMap<CheckerTag, CheckerRef> CheckerTags;
537
538  std::vector<CheckerDtor> CheckerDtors;
539
540  struct DeclCheckerInfo {
541    CheckDeclFunc CheckFn;
542    HandlesDeclFunc IsForDeclFn;
543  };
544  std::vector<DeclCheckerInfo> DeclCheckers;
545
546  std::vector<CheckDeclFunc> BodyCheckers;
547
548  typedef SmallVector<CheckDeclFunc, 4> CachedDeclCheckers;
549  typedef llvm::DenseMap<unsigned, CachedDeclCheckers> CachedDeclCheckersMapTy;
550  CachedDeclCheckersMapTy CachedDeclCheckersMap;
551
552  struct StmtCheckerInfo {
553    CheckStmtFunc CheckFn;
554    HandlesStmtFunc IsForStmtFn;
555    bool IsPreVisit;
556  };
557  std::vector<StmtCheckerInfo> StmtCheckers;
558
559  struct CachedStmtCheckersKey {
560    unsigned StmtKind;
561    bool IsPreVisit;
562
563    CachedStmtCheckersKey() : StmtKind(0), IsPreVisit(0) { }
564    CachedStmtCheckersKey(unsigned stmtKind, bool isPreVisit)
565      : StmtKind(stmtKind), IsPreVisit(isPreVisit) { }
566
567    static CachedStmtCheckersKey getSentinel() {
568      return CachedStmtCheckersKey(~0U, 0);
569    }
570    unsigned getHashValue() const {
571      llvm::FoldingSetNodeID ID;
572      ID.AddInteger(StmtKind);
573      ID.AddBoolean(IsPreVisit);
574      return ID.ComputeHash();
575    }
576    bool operator==(const CachedStmtCheckersKey &RHS) const {
577      return StmtKind == RHS.StmtKind && IsPreVisit == RHS.IsPreVisit;
578    }
579  };
580  friend struct llvm::DenseMapInfo<CachedStmtCheckersKey>;
581
582  typedef SmallVector<CheckStmtFunc, 4> CachedStmtCheckers;
583  typedef llvm::DenseMap<CachedStmtCheckersKey, CachedStmtCheckers>
584      CachedStmtCheckersMapTy;
585  CachedStmtCheckersMapTy CachedStmtCheckersMap;
586
587  CachedStmtCheckers *getCachedStmtCheckersFor(const Stmt *S, bool isPreVisit);
588
589  std::vector<CheckObjCMessageFunc> PreObjCMessageCheckers;
590  std::vector<CheckObjCMessageFunc> PostObjCMessageCheckers;
591
592  std::vector<CheckCallFunc> PreCallCheckers;
593  std::vector<CheckCallFunc> PostCallCheckers;
594
595  std::vector<CheckLocationFunc> LocationCheckers;
596
597  std::vector<CheckBindFunc> BindCheckers;
598
599  std::vector<CheckEndAnalysisFunc> EndAnalysisCheckers;
600
601  std::vector<CheckEndFunctionFunc> EndFunctionCheckers;
602
603  std::vector<CheckBranchConditionFunc> BranchConditionCheckers;
604
605  std::vector<CheckLiveSymbolsFunc> LiveSymbolsCheckers;
606
607  std::vector<CheckDeadSymbolsFunc> DeadSymbolsCheckers;
608
609  struct RegionChangesCheckerInfo {
610    CheckRegionChangesFunc CheckFn;
611    WantsRegionChangeUpdateFunc WantUpdateFn;
612  };
613  std::vector<RegionChangesCheckerInfo> RegionChangesCheckers;
614
615  std::vector<CheckPointerEscapeFunc> PointerEscapeCheckers;
616
617  std::vector<EvalAssumeFunc> EvalAssumeCheckers;
618
619  std::vector<EvalCallFunc> EvalCallCheckers;
620
621  std::vector<CheckEndOfTranslationUnit> EndOfTranslationUnitCheckers;
622
623  struct EventInfo {
624    SmallVector<CheckEventFunc, 4> Checkers;
625    bool HasDispatcher;
626    EventInfo() : HasDispatcher(false) { }
627  };
628
629  typedef llvm::DenseMap<EventTag, EventInfo> EventsTy;
630  EventsTy Events;
631};
632
633} // end ento namespace
634
635} // end clang namespace
636
637namespace llvm {
638  /// Define DenseMapInfo so that CachedStmtCheckersKey can be used as key
639  /// in DenseMap and DenseSets.
640  template <>
641  struct DenseMapInfo<clang::ento::CheckerManager::CachedStmtCheckersKey> {
642    static inline clang::ento::CheckerManager::CachedStmtCheckersKey
643        getEmptyKey() {
644      return clang::ento::CheckerManager::CachedStmtCheckersKey();
645    }
646    static inline clang::ento::CheckerManager::CachedStmtCheckersKey
647        getTombstoneKey() {
648      return clang::ento::CheckerManager::CachedStmtCheckersKey::getSentinel();
649    }
650
651    static unsigned
652        getHashValue(clang::ento::CheckerManager::CachedStmtCheckersKey S) {
653      return S.getHashValue();
654    }
655
656    static bool isEqual(clang::ento::CheckerManager::CachedStmtCheckersKey LHS,
657                       clang::ento::CheckerManager::CachedStmtCheckersKey RHS) {
658      return LHS == RHS;
659    }
660  };
661} // end namespace llvm
662
663#endif
664