1 //===- AnalysisOrderChecker - Print callbacks called ------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This checker prints callbacks that are called during analysis.
11 // This is required to ensure that callbacks are fired in order
12 // and do not duplicate or get lost.
13 // Feel free to extend this checker with any callback you need to check.
15 //===----------------------------------------------------------------------===//
17 #include "clang/StaticAnalyzer/Checkers/BuiltinCheckerRegistration.h"
18 #include "clang/AST/ExprCXX.h"
19 #include "clang/Analysis/CFGStmtMap.h"
20 #include "clang/StaticAnalyzer/Core/Checker.h"
21 #include "clang/StaticAnalyzer/Core/CheckerManager.h"
22 #include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"
23 #include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
25 using namespace clang;
30 class AnalysisOrderChecker
31 : public Checker<check::PreStmt<CastExpr>,
32 check::PostStmt<CastExpr>,
33 check::PreStmt<ArraySubscriptExpr>,
34 check::PostStmt<ArraySubscriptExpr>,
35 check::PreStmt<CXXNewExpr>,
36 check::PostStmt<CXXNewExpr>,
37 check::PreStmt<OffsetOfExpr>,
38 check::PostStmt<OffsetOfExpr>,
47 bool isCallbackEnabled(AnalyzerOptions &Opts, StringRef CallbackName) const {
48 return Opts.getCheckerBooleanOption("*", false, this) ||
49 Opts.getCheckerBooleanOption(CallbackName, false, this);
52 bool isCallbackEnabled(CheckerContext &C, StringRef CallbackName) const {
53 AnalyzerOptions &Opts = C.getAnalysisManager().getAnalyzerOptions();
54 return isCallbackEnabled(Opts, CallbackName);
57 bool isCallbackEnabled(ProgramStateRef State, StringRef CallbackName) const {
58 AnalyzerOptions &Opts = State->getStateManager().getOwningEngine()
59 .getAnalysisManager().getAnalyzerOptions();
60 return isCallbackEnabled(Opts, CallbackName);
64 void checkPreStmt(const CastExpr *CE, CheckerContext &C) const {
65 if (isCallbackEnabled(C, "PreStmtCastExpr"))
66 llvm::errs() << "PreStmt<CastExpr> (Kind : " << CE->getCastKindName()
70 void checkPostStmt(const CastExpr *CE, CheckerContext &C) const {
71 if (isCallbackEnabled(C, "PostStmtCastExpr"))
72 llvm::errs() << "PostStmt<CastExpr> (Kind : " << CE->getCastKindName()
76 void checkPreStmt(const ArraySubscriptExpr *SubExpr,
77 CheckerContext &C) const {
78 if (isCallbackEnabled(C, "PreStmtArraySubscriptExpr"))
79 llvm::errs() << "PreStmt<ArraySubscriptExpr>\n";
82 void checkPostStmt(const ArraySubscriptExpr *SubExpr,
83 CheckerContext &C) const {
84 if (isCallbackEnabled(C, "PostStmtArraySubscriptExpr"))
85 llvm::errs() << "PostStmt<ArraySubscriptExpr>\n";
88 void checkPreStmt(const CXXNewExpr *NE, CheckerContext &C) const {
89 if (isCallbackEnabled(C, "PreStmtCXXNewExpr"))
90 llvm::errs() << "PreStmt<CXXNewExpr>\n";
93 void checkPostStmt(const CXXNewExpr *NE, CheckerContext &C) const {
94 if (isCallbackEnabled(C, "PostStmtCXXNewExpr"))
95 llvm::errs() << "PostStmt<CXXNewExpr>\n";
98 void checkPreStmt(const OffsetOfExpr *OOE, CheckerContext &C) const {
99 if (isCallbackEnabled(C, "PreStmtOffsetOfExpr"))
100 llvm::errs() << "PreStmt<OffsetOfExpr>\n";
103 void checkPostStmt(const OffsetOfExpr *OOE, CheckerContext &C) const {
104 if (isCallbackEnabled(C, "PostStmtOffsetOfExpr"))
105 llvm::errs() << "PostStmt<OffsetOfExpr>\n";
108 void checkPreCall(const CallEvent &Call, CheckerContext &C) const {
109 if (isCallbackEnabled(C, "PreCall")) {
110 llvm::errs() << "PreCall";
111 if (const NamedDecl *ND = dyn_cast_or_null<NamedDecl>(Call.getDecl()))
112 llvm::errs() << " (" << ND->getQualifiedNameAsString() << ')';
113 llvm::errs() << '\n';
117 void checkPostCall(const CallEvent &Call, CheckerContext &C) const {
118 if (isCallbackEnabled(C, "PostCall")) {
119 llvm::errs() << "PostCall";
120 if (const NamedDecl *ND = dyn_cast_or_null<NamedDecl>(Call.getDecl()))
121 llvm::errs() << " (" << ND->getQualifiedNameAsString() << ')';
122 llvm::errs() << '\n';
126 void checkEndFunction(const ReturnStmt *S, CheckerContext &C) const {
127 if (isCallbackEnabled(C, "EndFunction")) {
128 llvm::errs() << "EndFunction\nReturnStmt: " << (S ? "yes" : "no") << "\n";
132 llvm::errs() << "CFGElement: ";
133 CFGStmtMap *Map = C.getCurrentAnalysisDeclContext()->getCFGStmtMap();
134 CFGElement LastElement = Map->getBlock(S)->back();
136 if (LastElement.getAs<CFGStmt>())
137 llvm::errs() << "CFGStmt\n";
138 else if (LastElement.getAs<CFGAutomaticObjDtor>())
139 llvm::errs() << "CFGAutomaticObjDtor\n";
143 void checkNewAllocator(const CXXNewExpr *CNE, SVal Target,
144 CheckerContext &C) const {
145 if (isCallbackEnabled(C, "NewAllocator"))
146 llvm::errs() << "NewAllocator\n";
149 void checkBind(SVal Loc, SVal Val, const Stmt *S, CheckerContext &C) const {
150 if (isCallbackEnabled(C, "Bind"))
151 llvm::errs() << "Bind\n";
154 void checkLiveSymbols(ProgramStateRef State, SymbolReaper &SymReaper) const {
155 if (isCallbackEnabled(State, "LiveSymbols"))
156 llvm::errs() << "LiveSymbols\n";
160 checkRegionChanges(ProgramStateRef State,
161 const InvalidatedSymbols *Invalidated,
162 ArrayRef<const MemRegion *> ExplicitRegions,
163 ArrayRef<const MemRegion *> Regions,
164 const LocationContext *LCtx, const CallEvent *Call) const {
165 if (isCallbackEnabled(State, "RegionChanges"))
166 llvm::errs() << "RegionChanges\n";
170 } // end anonymous namespace
172 //===----------------------------------------------------------------------===//
174 //===----------------------------------------------------------------------===//
176 void ento::registerAnalysisOrderChecker(CheckerManager &mgr) {
177 mgr.registerChecker<AnalysisOrderChecker>();