CheckerManager.cpp revision d563d3fb73879df7147b8a5302c3bf0e1402ba18 
1//===--- CheckerManager.cpp - Static Analyzer Checker Manager -------------===//
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#include "clang/StaticAnalyzer/Core/CheckerManager.h"
15#include "clang/StaticAnalyzer/Core/Checker.h"
16#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
17#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"
18#include "clang/Analysis/ProgramPoint.h"
19#include "clang/AST/DeclBase.h"
20
21using namespace clang;
22using namespace ento;
23
24bool CheckerManager::hasPathSensitiveCheckers() const {
25  return !StmtCheckers.empty()              ||
26         !PreObjCMessageCheckers.empty()    ||
27         !PostObjCMessageCheckers.empty()   ||
28         !PreCallCheckers.empty()    ||
29         !PostCallCheckers.empty()   ||
30         !LocationCheckers.empty()          ||
31         !BindCheckers.empty()              ||
32         !EndAnalysisCheckers.empty()       ||
33         !EndPathCheckers.empty()           ||
34         !BranchConditionCheckers.empty()   ||
35         !LiveSymbolsCheckers.empty()       ||
36         !DeadSymbolsCheckers.empty()       ||
37         !RegionChangesCheckers.empty()     ||
38         !EvalAssumeCheckers.empty()        ||
39         !EvalCallCheckers.empty()          ||
40         !InlineCallCheckers.empty();
41}
42
43void CheckerManager::finishedCheckerRegistration() {
44#ifndef NDEBUG
45  // Make sure that for every event that has listeners, there is at least
46  // one dispatcher registered for it.
47  for (llvm::DenseMap<EventTag, EventInfo>::iterator
48         I = Events.begin(), E = Events.end(); I != E; ++I)
49    assert(I->second.HasDispatcher && "No dispatcher registered for an event");
50#endif
51}
52
53//===----------------------------------------------------------------------===//
54// Functions for running checkers for AST traversing..
55//===----------------------------------------------------------------------===//
56
57void CheckerManager::runCheckersOnASTDecl(const Decl *D, AnalysisManager& mgr,
58                                          BugReporter &BR) {
59  assert(D);
60
61  unsigned DeclKind = D->getKind();
62  CachedDeclCheckers *checkers = 0;
63  CachedDeclCheckersMapTy::iterator CCI = CachedDeclCheckersMap.find(DeclKind);
64  if (CCI != CachedDeclCheckersMap.end()) {
65    checkers = &(CCI->second);
66  } else {
67    // Find the checkers that should run for this Decl and cache them.
68    checkers = &CachedDeclCheckersMap[DeclKind];
69    for (unsigned i = 0, e = DeclCheckers.size(); i != e; ++i) {
70      DeclCheckerInfo &info = DeclCheckers[i];
71      if (info.IsForDeclFn(D))
72        checkers->push_back(info.CheckFn);
73    }
74  }
75
76  assert(checkers);
77  for (CachedDeclCheckers::iterator
78         I = checkers->begin(), E = checkers->end(); I != E; ++I)
79    (*I)(D, mgr, BR);
80}
81
82void CheckerManager::runCheckersOnASTBody(const Decl *D, AnalysisManager& mgr,
83                                          BugReporter &BR) {
84  assert(D && D->hasBody());
85
86  for (unsigned i = 0, e = BodyCheckers.size(); i != e; ++i)
87    BodyCheckers[i](D, mgr, BR);
88}
89
90//===----------------------------------------------------------------------===//
91// Functions for running checkers for path-sensitive checking.
92//===----------------------------------------------------------------------===//
93
94template <typename CHECK_CTX>
95static void expandGraphWithCheckers(CHECK_CTX checkCtx,
96                                    ExplodedNodeSet &Dst,
97                                    const ExplodedNodeSet &Src) {
98  const NodeBuilderContext &BldrCtx = checkCtx.Eng.getBuilderContext();
99  if (Src.empty())
100    return;
101
102  typename CHECK_CTX::CheckersTy::const_iterator
103      I = checkCtx.checkers_begin(), E = checkCtx.checkers_end();
104  if (I == E) {
105    Dst.insert(Src);
106    return;
107  }
108
109  ExplodedNodeSet Tmp1, Tmp2;
110  const ExplodedNodeSet *PrevSet = &Src;
111
112  for (; I != E; ++I) {
113    ExplodedNodeSet *CurrSet = 0;
114    if (I+1 == E)
115      CurrSet = &Dst;
116    else {
117      CurrSet = (PrevSet == &Tmp1) ? &Tmp2 : &Tmp1;
118      CurrSet->clear();
119    }
120
121    NodeBuilder B(*PrevSet, *CurrSet, BldrCtx);
122    for (ExplodedNodeSet::iterator NI = PrevSet->begin(), NE = PrevSet->end();
123         NI != NE; ++NI) {
124      checkCtx.runChecker(*I, B, *NI);
125    }
126
127    // If all the produced transitions are sinks, stop.
128    if (CurrSet->empty())
129      return;
130
131    // Update which NodeSet is the current one.
132    PrevSet = CurrSet;
133  }
134}
135
136namespace {
137  struct CheckStmtContext {
138    typedef SmallVectorImpl<CheckerManager::CheckStmtFunc> CheckersTy;
139    bool IsPreVisit;
140    const CheckersTy &Checkers;
141    const Stmt *S;
142    ExprEngine &Eng;
143    bool wasInlined;
144
145    CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
146    CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
147
148    CheckStmtContext(bool isPreVisit, const CheckersTy &checkers,
149                     const Stmt *s, ExprEngine &eng, bool wasInlined = false)
150      : IsPreVisit(isPreVisit), Checkers(checkers), S(s), Eng(eng),
151        wasInlined(wasInlined) {}
152
153    void runChecker(CheckerManager::CheckStmtFunc checkFn,
154                    NodeBuilder &Bldr, ExplodedNode *Pred) {
155      // FIXME: Remove respondsToCallback from CheckerContext;
156      ProgramPoint::Kind K =  IsPreVisit ? ProgramPoint::PreStmtKind :
157                                           ProgramPoint::PostStmtKind;
158      const ProgramPoint &L = ProgramPoint::getProgramPoint(S, K,
159                                Pred->getLocationContext(), checkFn.Checker);
160      CheckerContext C(Bldr, Eng, Pred, L, wasInlined);
161      checkFn(S, C);
162    }
163  };
164}
165
166/// \brief Run checkers for visiting Stmts.
167void CheckerManager::runCheckersForStmt(bool isPreVisit,
168                                        ExplodedNodeSet &Dst,
169                                        const ExplodedNodeSet &Src,
170                                        const Stmt *S,
171                                        ExprEngine &Eng,
172                                        bool wasInlined) {
173  CheckStmtContext C(isPreVisit, *getCachedStmtCheckersFor(S, isPreVisit),
174                     S, Eng, wasInlined);
175  expandGraphWithCheckers(C, Dst, Src);
176}
177
178namespace {
179  struct CheckObjCMessageContext {
180    typedef std::vector<CheckerManager::CheckObjCMessageFunc> CheckersTy;
181    bool IsPreVisit;
182    const CheckersTy &Checkers;
183    const ObjCMethodCall &Msg;
184    ExprEngine &Eng;
185
186    CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
187    CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
188
189    CheckObjCMessageContext(bool isPreVisit, const CheckersTy &checkers,
190                            const ObjCMethodCall &msg, ExprEngine &eng)
191      : IsPreVisit(isPreVisit), Checkers(checkers), Msg(msg), Eng(eng) { }
192
193    void runChecker(CheckerManager::CheckObjCMessageFunc checkFn,
194                    NodeBuilder &Bldr, ExplodedNode *Pred) {
195      const ProgramPoint &L = Msg.getProgramPoint(IsPreVisit,checkFn.Checker);
196      CheckerContext C(Bldr, Eng, Pred, L);
197
198      checkFn(*Msg.cloneWithState<ObjCMethodCall>(Pred->getState()), C);
199    }
200  };
201}
202
203/// \brief Run checkers for visiting obj-c messages.
204void CheckerManager::runCheckersForObjCMessage(bool isPreVisit,
205                                               ExplodedNodeSet &Dst,
206                                               const ExplodedNodeSet &Src,
207                                               const ObjCMethodCall &msg,
208                                               ExprEngine &Eng) {
209  CheckObjCMessageContext C(isPreVisit,
210                            isPreVisit ? PreObjCMessageCheckers
211                                       : PostObjCMessageCheckers,
212                            msg, Eng);
213  expandGraphWithCheckers(C, Dst, Src);
214}
215
216namespace {
217  // FIXME: This has all the same signatures as CheckObjCMessageContext.
218  // Is there a way we can merge the two?
219  struct CheckCallContext {
220    typedef std::vector<CheckerManager::CheckCallFunc> CheckersTy;
221    bool IsPreVisit;
222    const CheckersTy &Checkers;
223    const CallEvent &Call;
224    ExprEngine &Eng;
225
226    CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
227    CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
228
229    CheckCallContext(bool isPreVisit, const CheckersTy &checkers,
230                     const CallEvent &call, ExprEngine &eng)
231    : IsPreVisit(isPreVisit), Checkers(checkers), Call(call), Eng(eng) { }
232
233    void runChecker(CheckerManager::CheckCallFunc checkFn,
234                    NodeBuilder &Bldr, ExplodedNode *Pred) {
235      const ProgramPoint &L = Call.getProgramPoint(IsPreVisit,checkFn.Checker);
236      CheckerContext C(Bldr, Eng, Pred, L);
237
238      checkFn(*Call.cloneWithState(Pred->getState()), C);
239    }
240  };
241}
242
243/// \brief Run checkers for visiting an abstract call event.
244void CheckerManager::runCheckersForCallEvent(bool isPreVisit,
245                                             ExplodedNodeSet &Dst,
246                                             const ExplodedNodeSet &Src,
247                                             const CallEvent &Call,
248                                             ExprEngine &Eng) {
249  CheckCallContext C(isPreVisit,
250                     isPreVisit ? PreCallCheckers
251                                : PostCallCheckers,
252                     Call, Eng);
253  expandGraphWithCheckers(C, Dst, Src);
254}
255
256namespace {
257  struct CheckLocationContext {
258    typedef std::vector<CheckerManager::CheckLocationFunc> CheckersTy;
259    const CheckersTy &Checkers;
260    SVal Loc;
261    bool IsLoad;
262    const Stmt *NodeEx; /* Will become a CFGStmt */
263    const Stmt *BoundEx;
264    ExprEngine &Eng;
265
266    CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
267    CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
268
269    CheckLocationContext(const CheckersTy &checkers,
270                         SVal loc, bool isLoad, const Stmt *NodeEx,
271                         const Stmt *BoundEx,
272                         ExprEngine &eng)
273      : Checkers(checkers), Loc(loc), IsLoad(isLoad), NodeEx(NodeEx),
274        BoundEx(BoundEx), Eng(eng) {}
275
276    void runChecker(CheckerManager::CheckLocationFunc checkFn,
277                    NodeBuilder &Bldr, ExplodedNode *Pred) {
278      ProgramPoint::Kind K =  IsLoad ? ProgramPoint::PreLoadKind :
279                                       ProgramPoint::PreStoreKind;
280      const ProgramPoint &L =
281        ProgramPoint::getProgramPoint(NodeEx, K,
282                                      Pred->getLocationContext(),
283                                      checkFn.Checker);
284      CheckerContext C(Bldr, Eng, Pred, L);
285      checkFn(Loc, IsLoad, BoundEx, C);
286    }
287  };
288}
289
290/// \brief Run checkers for load/store of a location.
291
292void CheckerManager::runCheckersForLocation(ExplodedNodeSet &Dst,
293                                            const ExplodedNodeSet &Src,
294                                            SVal location, bool isLoad,
295                                            const Stmt *NodeEx,
296                                            const Stmt *BoundEx,
297                                            ExprEngine &Eng) {
298  CheckLocationContext C(LocationCheckers, location, isLoad, NodeEx,
299                         BoundEx, Eng);
300  expandGraphWithCheckers(C, Dst, Src);
301}
302
303namespace {
304  struct CheckBindContext {
305    typedef std::vector<CheckerManager::CheckBindFunc> CheckersTy;
306    const CheckersTy &Checkers;
307    SVal Loc;
308    SVal Val;
309    const Stmt *S;
310    ExprEngine &Eng;
311    ProgramPoint::Kind PointKind;
312
313    CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
314    CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
315
316    CheckBindContext(const CheckersTy &checkers,
317                     SVal loc, SVal val, const Stmt *s, ExprEngine &eng,
318                     ProgramPoint::Kind PK)
319      : Checkers(checkers), Loc(loc), Val(val), S(s), Eng(eng), PointKind(PK) {}
320
321    void runChecker(CheckerManager::CheckBindFunc checkFn,
322                    NodeBuilder &Bldr, ExplodedNode *Pred) {
323      const ProgramPoint &L = ProgramPoint::getProgramPoint(S, PointKind,
324                                Pred->getLocationContext(), checkFn.Checker);
325      CheckerContext C(Bldr, Eng, Pred, L);
326
327      checkFn(Loc, Val, S, C);
328    }
329  };
330}
331
332/// \brief Run checkers for binding of a value to a location.
333void CheckerManager::runCheckersForBind(ExplodedNodeSet &Dst,
334                                        const ExplodedNodeSet &Src,
335                                        SVal location, SVal val,
336                                        const Stmt *S, ExprEngine &Eng,
337                                        ProgramPoint::Kind PointKind) {
338  CheckBindContext C(BindCheckers, location, val, S, Eng, PointKind);
339  expandGraphWithCheckers(C, Dst, Src);
340}
341
342void CheckerManager::runCheckersForEndAnalysis(ExplodedGraph &G,
343                                               BugReporter &BR,
344                                               ExprEngine &Eng) {
345  for (unsigned i = 0, e = EndAnalysisCheckers.size(); i != e; ++i)
346    EndAnalysisCheckers[i](G, BR, Eng);
347}
348
349/// \brief Run checkers for end of path.
350// Note, We do not chain the checker output (like in expandGraphWithCheckers)
351// for this callback since end of path nodes are expected to be final.
352void CheckerManager::runCheckersForEndPath(NodeBuilderContext &BC,
353                                           ExplodedNodeSet &Dst,
354                                           ExprEngine &Eng) {
355  ExplodedNode *Pred = BC.Pred;
356
357  // We define the builder outside of the loop bacause if at least one checkers
358  // creates a sucsessor for Pred, we do not need to generate an
359  // autotransition for it.
360  NodeBuilder Bldr(Pred, Dst, BC);
361  for (unsigned i = 0, e = EndPathCheckers.size(); i != e; ++i) {
362    CheckEndPathFunc checkFn = EndPathCheckers[i];
363
364    const ProgramPoint &L = BlockEntrance(BC.Block,
365                                          Pred->getLocationContext(),
366                                          checkFn.Checker);
367    CheckerContext C(Bldr, Eng, Pred, L);
368    checkFn(C);
369  }
370}
371
372namespace {
373  struct CheckBranchConditionContext {
374    typedef std::vector<CheckerManager::CheckBranchConditionFunc> CheckersTy;
375    const CheckersTy &Checkers;
376    const Stmt *Condition;
377    ExprEngine &Eng;
378
379    CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
380    CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
381
382    CheckBranchConditionContext(const CheckersTy &checkers,
383                                const Stmt *Cond, ExprEngine &eng)
384      : Checkers(checkers), Condition(Cond), Eng(eng) {}
385
386    void runChecker(CheckerManager::CheckBranchConditionFunc checkFn,
387                    NodeBuilder &Bldr, ExplodedNode *Pred) {
388      ProgramPoint L = PostCondition(Condition, Pred->getLocationContext(),
389                                     checkFn.Checker);
390      CheckerContext C(Bldr, Eng, Pred, L);
391      checkFn(Condition, C);
392    }
393  };
394}
395
396/// \brief Run checkers for branch condition.
397void CheckerManager::runCheckersForBranchCondition(const Stmt *Condition,
398                                                   ExplodedNodeSet &Dst,
399                                                   ExplodedNode *Pred,
400                                                   ExprEngine &Eng) {
401  ExplodedNodeSet Src;
402  Src.insert(Pred);
403  CheckBranchConditionContext C(BranchConditionCheckers, Condition, Eng);
404  expandGraphWithCheckers(C, Dst, Src);
405}
406
407/// \brief Run checkers for live symbols.
408void CheckerManager::runCheckersForLiveSymbols(ProgramStateRef state,
409                                               SymbolReaper &SymReaper) {
410  for (unsigned i = 0, e = LiveSymbolsCheckers.size(); i != e; ++i)
411    LiveSymbolsCheckers[i](state, SymReaper);
412}
413
414namespace {
415  struct CheckDeadSymbolsContext {
416    typedef std::vector<CheckerManager::CheckDeadSymbolsFunc> CheckersTy;
417    const CheckersTy &Checkers;
418    SymbolReaper &SR;
419    const Stmt *S;
420    ExprEngine &Eng;
421    ProgramPoint::Kind ProgarmPointKind;
422
423    CheckersTy::const_iterator checkers_begin() { return Checkers.begin(); }
424    CheckersTy::const_iterator checkers_end() { return Checkers.end(); }
425
426    CheckDeadSymbolsContext(const CheckersTy &checkers, SymbolReaper &sr,
427                            const Stmt *s, ExprEngine &eng,
428                            ProgramPoint::Kind K)
429      : Checkers(checkers), SR(sr), S(s), Eng(eng), ProgarmPointKind(K) { }
430
431    void runChecker(CheckerManager::CheckDeadSymbolsFunc checkFn,
432                    NodeBuilder &Bldr, ExplodedNode *Pred) {
433      const ProgramPoint &L = ProgramPoint::getProgramPoint(S, ProgarmPointKind,
434                                Pred->getLocationContext(), checkFn.Checker);
435      CheckerContext C(Bldr, Eng, Pred, L);
436
437      // Note, do not pass the statement to the checkers without letting them
438      // differentiate if we ran remove dead bindings before or after the
439      // statement.
440      checkFn(SR, C);
441    }
442  };
443}
444
445/// \brief Run checkers for dead symbols.
446void CheckerManager::runCheckersForDeadSymbols(ExplodedNodeSet &Dst,
447                                               const ExplodedNodeSet &Src,
448                                               SymbolReaper &SymReaper,
449                                               const Stmt *S,
450                                               ExprEngine &Eng,
451                                               ProgramPoint::Kind K) {
452  CheckDeadSymbolsContext C(DeadSymbolsCheckers, SymReaper, S, Eng, K);
453  expandGraphWithCheckers(C, Dst, Src);
454}
455
456/// \brief True if at least one checker wants to check region changes.
457bool CheckerManager::wantsRegionChangeUpdate(ProgramStateRef state) {
458  for (unsigned i = 0, e = RegionChangesCheckers.size(); i != e; ++i)
459    if (RegionChangesCheckers[i].WantUpdateFn(state))
460      return true;
461
462  return false;
463}
464
465/// \brief Run checkers for region changes.
466ProgramStateRef
467CheckerManager::runCheckersForRegionChanges(ProgramStateRef state,
468                            const StoreManager::InvalidatedSymbols *invalidated,
469                                    ArrayRef<const MemRegion *> ExplicitRegions,
470                                          ArrayRef<const MemRegion *> Regions,
471                                          const CallEvent *Call) {
472  for (unsigned i = 0, e = RegionChangesCheckers.size(); i != e; ++i) {
473    // If any checker declares the state infeasible (or if it starts that way),
474    // bail out.
475    if (!state)
476      return NULL;
477    state = RegionChangesCheckers[i].CheckFn(state, invalidated,
478                                             ExplicitRegions, Regions, Call);
479  }
480  return state;
481}
482
483/// \brief Run checkers for handling assumptions on symbolic values.
484ProgramStateRef
485CheckerManager::runCheckersForEvalAssume(ProgramStateRef state,
486                                         SVal Cond, bool Assumption) {
487  for (unsigned i = 0, e = EvalAssumeCheckers.size(); i != e; ++i) {
488    // If any checker declares the state infeasible (or if it starts that way),
489    // bail out.
490    if (!state)
491      return NULL;
492    state = EvalAssumeCheckers[i](state, Cond, Assumption);
493  }
494  return state;
495}
496
497/// \brief Run checkers for evaluating a call.
498/// Only one checker will evaluate the call.
499void CheckerManager::runCheckersForEvalCall(ExplodedNodeSet &Dst,
500                                            const ExplodedNodeSet &Src,
501                                            const SimpleCall &Call,
502                                            ExprEngine &Eng) {
503  const CallExpr *CE = Call.getOriginExpr();
504  for (ExplodedNodeSet::iterator
505         NI = Src.begin(), NE = Src.end(); NI != NE; ++NI) {
506
507    ExplodedNode *Pred = *NI;
508    bool anyEvaluated = false;
509
510    // First, check if any of the InlineCall callbacks can evaluate the call.
511    assert(InlineCallCheckers.size() <= 1 &&
512           "InlineCall is a special hacky callback to allow intrusive"
513           "evaluation of the call (which simulates inlining). It is "
514           "currently only used by OSAtomicChecker and should go away "
515           "at some point.");
516    for (std::vector<InlineCallFunc>::iterator
517           EI = InlineCallCheckers.begin(), EE = InlineCallCheckers.end();
518         EI != EE; ++EI) {
519      ExplodedNodeSet checkDst;
520      bool evaluated = (*EI)(CE, Eng, Pred, checkDst);
521      assert(!(evaluated && anyEvaluated)
522             && "There are more than one checkers evaluating the call");
523      if (evaluated) {
524        anyEvaluated = true;
525        Dst.insert(checkDst);
526#ifdef NDEBUG
527        break; // on release don't check that no other checker also evals.
528#endif
529      }
530    }
531
532#ifdef NDEBUG // on release don't check that no other checker also evals.
533    if (anyEvaluated) {
534      break;
535    }
536#endif
537
538    ExplodedNodeSet checkDst;
539    NodeBuilder B(Pred, checkDst, Eng.getBuilderContext());
540    // Next, check if any of the EvalCall callbacks can evaluate the call.
541    for (std::vector<EvalCallFunc>::iterator
542           EI = EvalCallCheckers.begin(), EE = EvalCallCheckers.end();
543         EI != EE; ++EI) {
544      ProgramPoint::Kind K = ProgramPoint::PostStmtKind;
545      const ProgramPoint &L = ProgramPoint::getProgramPoint(CE, K,
546                                Pred->getLocationContext(), EI->Checker);
547      bool evaluated = false;
548      { // CheckerContext generates transitions(populates checkDest) on
549        // destruction, so introduce the scope to make sure it gets properly
550        // populated.
551        CheckerContext C(B, Eng, Pred, L);
552        evaluated = (*EI)(CE, C);
553      }
554      assert(!(evaluated && anyEvaluated)
555             && "There are more than one checkers evaluating the call");
556      if (evaluated) {
557        anyEvaluated = true;
558        Dst.insert(checkDst);
559#ifdef NDEBUG
560        break; // on release don't check that no other checker also evals.
561#endif
562      }
563    }
564
565    // If none of the checkers evaluated the call, ask ExprEngine to handle it.
566    if (!anyEvaluated) {
567      NodeBuilder B(Pred, Dst, Eng.getBuilderContext());
568      Eng.defaultEvalCall(B, Pred, Call);
569    }
570  }
571}
572
573/// \brief Run checkers for the entire Translation Unit.
574void CheckerManager::runCheckersOnEndOfTranslationUnit(
575                                                  const TranslationUnitDecl *TU,
576                                                  AnalysisManager &mgr,
577                                                  BugReporter &BR) {
578  for (unsigned i = 0, e = EndOfTranslationUnitCheckers.size(); i != e; ++i)
579    EndOfTranslationUnitCheckers[i](TU, mgr, BR);
580}
581
582void CheckerManager::runCheckersForPrintState(raw_ostream &Out,
583                                              ProgramStateRef State,
584                                              const char *NL, const char *Sep) {
585  for (llvm::DenseMap<CheckerTag, CheckerRef>::iterator
586        I = CheckerTags.begin(), E = CheckerTags.end(); I != E; ++I)
587    I->second->printState(Out, State, NL, Sep);
588}
589
590//===----------------------------------------------------------------------===//
591// Internal registration functions for AST traversing.
592//===----------------------------------------------------------------------===//
593
594void CheckerManager::_registerForDecl(CheckDeclFunc checkfn,
595                                      HandlesDeclFunc isForDeclFn) {
596  DeclCheckerInfo info = { checkfn, isForDeclFn };
597  DeclCheckers.push_back(info);
598}
599
600void CheckerManager::_registerForBody(CheckDeclFunc checkfn) {
601  BodyCheckers.push_back(checkfn);
602}
603
604//===----------------------------------------------------------------------===//
605// Internal registration functions for path-sensitive checking.
606//===----------------------------------------------------------------------===//
607
608void CheckerManager::_registerForPreStmt(CheckStmtFunc checkfn,
609                                         HandlesStmtFunc isForStmtFn) {
610  StmtCheckerInfo info = { checkfn, isForStmtFn, /*IsPreVisit*/true };
611  StmtCheckers.push_back(info);
612}
613void CheckerManager::_registerForPostStmt(CheckStmtFunc checkfn,
614                                          HandlesStmtFunc isForStmtFn) {
615  StmtCheckerInfo info = { checkfn, isForStmtFn, /*IsPreVisit*/false };
616  StmtCheckers.push_back(info);
617}
618
619void CheckerManager::_registerForPreObjCMessage(CheckObjCMessageFunc checkfn) {
620  PreObjCMessageCheckers.push_back(checkfn);
621}
622void CheckerManager::_registerForPostObjCMessage(CheckObjCMessageFunc checkfn) {
623  PostObjCMessageCheckers.push_back(checkfn);
624}
625
626void CheckerManager::_registerForPreCall(CheckCallFunc checkfn) {
627  PreCallCheckers.push_back(checkfn);
628}
629void CheckerManager::_registerForPostCall(CheckCallFunc checkfn) {
630  PostCallCheckers.push_back(checkfn);
631}
632
633void CheckerManager::_registerForLocation(CheckLocationFunc checkfn) {
634  LocationCheckers.push_back(checkfn);
635}
636
637void CheckerManager::_registerForBind(CheckBindFunc checkfn) {
638  BindCheckers.push_back(checkfn);
639}
640
641void CheckerManager::_registerForEndAnalysis(CheckEndAnalysisFunc checkfn) {
642  EndAnalysisCheckers.push_back(checkfn);
643}
644
645void CheckerManager::_registerForEndPath(CheckEndPathFunc checkfn) {
646  EndPathCheckers.push_back(checkfn);
647}
648
649void CheckerManager::_registerForBranchCondition(
650                                             CheckBranchConditionFunc checkfn) {
651  BranchConditionCheckers.push_back(checkfn);
652}
653
654void CheckerManager::_registerForLiveSymbols(CheckLiveSymbolsFunc checkfn) {
655  LiveSymbolsCheckers.push_back(checkfn);
656}
657
658void CheckerManager::_registerForDeadSymbols(CheckDeadSymbolsFunc checkfn) {
659  DeadSymbolsCheckers.push_back(checkfn);
660}
661
662void CheckerManager::_registerForRegionChanges(CheckRegionChangesFunc checkfn,
663                                     WantsRegionChangeUpdateFunc wantUpdateFn) {
664  RegionChangesCheckerInfo info = {checkfn, wantUpdateFn};
665  RegionChangesCheckers.push_back(info);
666}
667
668void CheckerManager::_registerForEvalAssume(EvalAssumeFunc checkfn) {
669  EvalAssumeCheckers.push_back(checkfn);
670}
671
672void CheckerManager::_registerForEvalCall(EvalCallFunc checkfn) {
673  EvalCallCheckers.push_back(checkfn);
674}
675
676void CheckerManager::_registerForInlineCall(InlineCallFunc checkfn) {
677  InlineCallCheckers.push_back(checkfn);
678}
679
680void CheckerManager::_registerForEndOfTranslationUnit(
681                                            CheckEndOfTranslationUnit checkfn) {
682  EndOfTranslationUnitCheckers.push_back(checkfn);
683}
684
685//===----------------------------------------------------------------------===//
686// Implementation details.
687//===----------------------------------------------------------------------===//
688
689CheckerManager::CachedStmtCheckers *
690CheckerManager::getCachedStmtCheckersFor(const Stmt *S, bool isPreVisit) {
691  assert(S);
692
693  CachedStmtCheckersKey key(S->getStmtClass(), isPreVisit);
694  CachedStmtCheckers *checkers = 0;
695  CachedStmtCheckersMapTy::iterator CCI = CachedStmtCheckersMap.find(key);
696  if (CCI != CachedStmtCheckersMap.end()) {
697    checkers = &(CCI->second);
698  } else {
699    // Find the checkers that should run for this Stmt and cache them.
700    checkers = &CachedStmtCheckersMap[key];
701    for (unsigned i = 0, e = StmtCheckers.size(); i != e; ++i) {
702      StmtCheckerInfo &info = StmtCheckers[i];
703      if (info.IsPreVisit == isPreVisit && info.IsForStmtFn(S))
704        checkers->push_back(info.CheckFn);
705    }
706  }
707
708  assert(checkers);
709  return checkers;
710}
711
712CheckerManager::~CheckerManager() {
713  for (unsigned i = 0, e = CheckerDtors.size(); i != e; ++i)
714    CheckerDtors[i]();
715}
716