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//===- AnalysisOrderChecker - Print callbacks called ------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This checker prints callbacks that are called during analysis.
// This is required to ensure that callbacks are fired in order
// and do not duplicate or get lost.
// Feel free to extend this checker with any callback you need to check.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/ExprCXX.h"
#include "clang/Analysis/CFGStmtMap.h"
#include "clang/StaticAnalyzer/Checkers/BuiltinCheckerRegistration.h"
#include "clang/StaticAnalyzer/Core/Checker.h"
#include "clang/StaticAnalyzer/Core/CheckerManager.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
#include "llvm/Support/ErrorHandling.h"
using namespace clang;
using namespace ento;
namespace {
class AnalysisOrderChecker
: public Checker<
check::PreStmt<CastExpr>, check::PostStmt<CastExpr>,
check::PreStmt<ArraySubscriptExpr>,
check::PostStmt<ArraySubscriptExpr>, check::PreStmt<CXXNewExpr>,
check::PostStmt<CXXNewExpr>, check::PreStmt<CXXDeleteExpr>,
check::PostStmt<CXXDeleteExpr>, check::PreStmt<CXXConstructExpr>,
check::PostStmt<CXXConstructExpr>, check::PreStmt<OffsetOfExpr>,
check::PostStmt<OffsetOfExpr>, check::PreCall, check::PostCall,
check::EndFunction, check::EndAnalysis, check::NewAllocator,
check::Bind, check::PointerEscape, check::RegionChanges,
check::LiveSymbols, eval::Call> {
bool isCallbackEnabled(const AnalyzerOptions &Opts,
StringRef CallbackName) const {
return Opts.getCheckerBooleanOption(this, "*") ||
Opts.getCheckerBooleanOption(this, CallbackName);
}
bool isCallbackEnabled(CheckerContext &C, StringRef CallbackName) const {
AnalyzerOptions &Opts = C.getAnalysisManager().getAnalyzerOptions();
return isCallbackEnabled(Opts, CallbackName);
}
bool isCallbackEnabled(ProgramStateRef State, StringRef CallbackName) const {
AnalyzerOptions &Opts = State->getStateManager().getOwningEngine()
.getAnalysisManager().getAnalyzerOptions();
return isCallbackEnabled(Opts, CallbackName);
}
public:
void checkPreStmt(const CastExpr *CE, CheckerContext &C) const {
if (isCallbackEnabled(C, "PreStmtCastExpr"))
llvm::errs() << "PreStmt<CastExpr> (Kind : " << CE->getCastKindName()
<< ")\n";
}
void checkPostStmt(const CastExpr *CE, CheckerContext &C) const {
if (isCallbackEnabled(C, "PostStmtCastExpr"))
llvm::errs() << "PostStmt<CastExpr> (Kind : " << CE->getCastKindName()
<< ")\n";
}
void checkPreStmt(const ArraySubscriptExpr *SubExpr,
CheckerContext &C) const {
if (isCallbackEnabled(C, "PreStmtArraySubscriptExpr"))
llvm::errs() << "PreStmt<ArraySubscriptExpr>\n";
}
void checkPostStmt(const ArraySubscriptExpr *SubExpr,
CheckerContext &C) const {
if (isCallbackEnabled(C, "PostStmtArraySubscriptExpr"))
llvm::errs() << "PostStmt<ArraySubscriptExpr>\n";
}
void checkPreStmt(const CXXNewExpr *NE, CheckerContext &C) const {
if (isCallbackEnabled(C, "PreStmtCXXNewExpr"))
llvm::errs() << "PreStmt<CXXNewExpr>\n";
}
void checkPostStmt(const CXXNewExpr *NE, CheckerContext &C) const {
if (isCallbackEnabled(C, "PostStmtCXXNewExpr"))
llvm::errs() << "PostStmt<CXXNewExpr>\n";
}
void checkPreStmt(const CXXDeleteExpr *NE, CheckerContext &C) const {
if (isCallbackEnabled(C, "PreStmtCXXDeleteExpr"))
llvm::errs() << "PreStmt<CXXDeleteExpr>\n";
}
void checkPostStmt(const CXXDeleteExpr *NE, CheckerContext &C) const {
if (isCallbackEnabled(C, "PostStmtCXXDeleteExpr"))
llvm::errs() << "PostStmt<CXXDeleteExpr>\n";
}
void checkPreStmt(const CXXConstructExpr *NE, CheckerContext &C) const {
if (isCallbackEnabled(C, "PreStmtCXXConstructExpr"))
llvm::errs() << "PreStmt<CXXConstructExpr>\n";
}
void checkPostStmt(const CXXConstructExpr *NE, CheckerContext &C) const {
if (isCallbackEnabled(C, "PostStmtCXXConstructExpr"))
llvm::errs() << "PostStmt<CXXConstructExpr>\n";
}
void checkPreStmt(const OffsetOfExpr *OOE, CheckerContext &C) const {
if (isCallbackEnabled(C, "PreStmtOffsetOfExpr"))
llvm::errs() << "PreStmt<OffsetOfExpr>\n";
}
void checkPostStmt(const OffsetOfExpr *OOE, CheckerContext &C) const {
if (isCallbackEnabled(C, "PostStmtOffsetOfExpr"))
llvm::errs() << "PostStmt<OffsetOfExpr>\n";
}
bool evalCall(const CallEvent &Call, CheckerContext &C) const {
if (isCallbackEnabled(C, "EvalCall")) {
llvm::errs() << "EvalCall";
if (const NamedDecl *ND = dyn_cast_or_null<NamedDecl>(Call.getDecl()))
llvm::errs() << " (" << ND->getQualifiedNameAsString() << ')';
llvm::errs() << " {argno: " << Call.getNumArgs() << '}';
llvm::errs() << " [" << Call.getKindAsString() << ']';
llvm::errs() << '\n';
return true;
}
return false;
}
void checkPreCall(const CallEvent &Call, CheckerContext &C) const {
if (isCallbackEnabled(C, "PreCall")) {
llvm::errs() << "PreCall";
if (const NamedDecl *ND = dyn_cast_or_null<NamedDecl>(Call.getDecl()))
llvm::errs() << " (" << ND->getQualifiedNameAsString() << ')';
llvm::errs() << " [" << Call.getKindAsString() << ']';
llvm::errs() << '\n';
}
}
void checkPostCall(const CallEvent &Call, CheckerContext &C) const {
if (isCallbackEnabled(C, "PostCall")) {
llvm::errs() << "PostCall";
if (const NamedDecl *ND = dyn_cast_or_null<NamedDecl>(Call.getDecl()))
llvm::errs() << " (" << ND->getQualifiedNameAsString() << ')';
llvm::errs() << " [" << Call.getKindAsString() << ']';
llvm::errs() << '\n';
}
}
void checkEndFunction(const ReturnStmt *S, CheckerContext &C) const {
if (isCallbackEnabled(C, "EndFunction")) {
llvm::errs() << "EndFunction\nReturnStmt: " << (S ? "yes" : "no") << "\n";
if (!S)
return;
llvm::errs() << "CFGElement: ";
CFGStmtMap *Map = C.getCurrentAnalysisDeclContext()->getCFGStmtMap();
CFGElement LastElement = Map->getBlock(S)->back();
if (LastElement.getAs<CFGStmt>())
llvm::errs() << "CFGStmt\n";
else if (LastElement.getAs<CFGAutomaticObjDtor>())
llvm::errs() << "CFGAutomaticObjDtor\n";
}
}
void checkEndAnalysis(ExplodedGraph &G, BugReporter &BR,
ExprEngine &Eng) const {
if (isCallbackEnabled(BR.getAnalyzerOptions(), "EndAnalysis"))
llvm::errs() << "EndAnalysis\n";
}
void checkNewAllocator(const CXXAllocatorCall &Call,
CheckerContext &C) const {
if (isCallbackEnabled(C, "NewAllocator"))
llvm::errs() << "NewAllocator\n";
}
void checkBind(SVal Loc, SVal Val, const Stmt *S, CheckerContext &C) const {
if (isCallbackEnabled(C, "Bind"))
llvm::errs() << "Bind\n";
}
void checkLiveSymbols(ProgramStateRef State, SymbolReaper &SymReaper) const {
if (isCallbackEnabled(State, "LiveSymbols"))
llvm::errs() << "LiveSymbols\n";
}
ProgramStateRef
checkRegionChanges(ProgramStateRef State,
const InvalidatedSymbols *Invalidated,
ArrayRef<const MemRegion *> ExplicitRegions,
ArrayRef<const MemRegion *> Regions,
const LocationContext *LCtx, const CallEvent *Call) const {
if (isCallbackEnabled(State, "RegionChanges"))
llvm::errs() << "RegionChanges\n";
return State;
}
ProgramStateRef checkPointerEscape(ProgramStateRef State,
const InvalidatedSymbols &Escaped,
const CallEvent *Call,
PointerEscapeKind Kind) const {
if (isCallbackEnabled(State, "PointerEscape"))
llvm::errs() << "PointerEscape\n";
return State;
}
};
} // end anonymous namespace
//===----------------------------------------------------------------------===//
// Registration.
//===----------------------------------------------------------------------===//
void ento::registerAnalysisOrderChecker(CheckerManager &mgr) {
mgr.registerChecker<AnalysisOrderChecker>();
}
bool ento::shouldRegisterAnalysisOrderChecker(const CheckerManager &mgr) {
return true;
}
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