058a7a450a
Introduce the boolean ento::shouldRegister##CHECKERNAME(const LangOptions &LO) function very similarly to ento::register##CHECKERNAME. This will force every checker to implement this function, but maybe it isn't that bad: I saw a lot of ObjC or C++ specific checkers that should probably not register themselves based on some LangOptions (mine too), but they do anyways. A big benefit of this is that all registry functions now register their checker, once it is called, registration is guaranteed. This patch is a part of a greater effort to reinvent checker registration, more info here: D54438#1315953 Differential Revision: https://reviews.llvm.org/D55424 llvm-svn: 352277
122 lines
4.4 KiB
C++
122 lines
4.4 KiB
C++
//== TraversalChecker.cpp -------------------------------------- -*- 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// These checkers print various aspects of the ExprEngine's traversal of the CFG
|
|
// as it builds the ExplodedGraph.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
#include "clang/StaticAnalyzer/Checkers/BuiltinCheckerRegistration.h"
|
|
#include "clang/AST/ParentMap.h"
|
|
#include "clang/AST/StmtObjC.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/raw_ostream.h"
|
|
|
|
using namespace clang;
|
|
using namespace ento;
|
|
|
|
namespace {
|
|
class TraversalDumper : public Checker< check::BranchCondition,
|
|
check::BeginFunction,
|
|
check::EndFunction > {
|
|
public:
|
|
void checkBranchCondition(const Stmt *Condition, CheckerContext &C) const;
|
|
void checkBeginFunction(CheckerContext &C) const;
|
|
void checkEndFunction(const ReturnStmt *RS, CheckerContext &C) const;
|
|
};
|
|
}
|
|
|
|
void TraversalDumper::checkBranchCondition(const Stmt *Condition,
|
|
CheckerContext &C) const {
|
|
// Special-case Objective-C's for-in loop, which uses the entire loop as its
|
|
// condition. We just print the collection expression.
|
|
const Stmt *Parent = dyn_cast<ObjCForCollectionStmt>(Condition);
|
|
if (!Parent) {
|
|
const ParentMap &Parents = C.getLocationContext()->getParentMap();
|
|
Parent = Parents.getParent(Condition);
|
|
}
|
|
|
|
// It is mildly evil to print directly to llvm::outs() rather than emitting
|
|
// warnings, but this ensures things do not get filtered out by the rest of
|
|
// the static analyzer machinery.
|
|
SourceLocation Loc = Parent->getBeginLoc();
|
|
llvm::outs() << C.getSourceManager().getSpellingLineNumber(Loc) << " "
|
|
<< Parent->getStmtClassName() << "\n";
|
|
}
|
|
|
|
void TraversalDumper::checkBeginFunction(CheckerContext &C) const {
|
|
llvm::outs() << "--BEGIN FUNCTION--\n";
|
|
}
|
|
|
|
void TraversalDumper::checkEndFunction(const ReturnStmt *RS,
|
|
CheckerContext &C) const {
|
|
llvm::outs() << "--END FUNCTION--\n";
|
|
}
|
|
|
|
void ento::registerTraversalDumper(CheckerManager &mgr) {
|
|
mgr.registerChecker<TraversalDumper>();
|
|
}
|
|
|
|
bool ento::shouldRegisterTraversalDumper(const LangOptions &LO) {
|
|
return true;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
namespace {
|
|
class CallDumper : public Checker< check::PreCall,
|
|
check::PostCall > {
|
|
public:
|
|
void checkPreCall(const CallEvent &Call, CheckerContext &C) const;
|
|
void checkPostCall(const CallEvent &Call, CheckerContext &C) const;
|
|
};
|
|
}
|
|
|
|
void CallDumper::checkPreCall(const CallEvent &Call, CheckerContext &C) const {
|
|
unsigned Indentation = 0;
|
|
for (const LocationContext *LC = C.getLocationContext()->getParent();
|
|
LC != nullptr; LC = LC->getParent())
|
|
++Indentation;
|
|
|
|
// It is mildly evil to print directly to llvm::outs() rather than emitting
|
|
// warnings, but this ensures things do not get filtered out by the rest of
|
|
// the static analyzer machinery.
|
|
llvm::outs().indent(Indentation);
|
|
Call.dump(llvm::outs());
|
|
}
|
|
|
|
void CallDumper::checkPostCall(const CallEvent &Call, CheckerContext &C) const {
|
|
const Expr *CallE = Call.getOriginExpr();
|
|
if (!CallE)
|
|
return;
|
|
|
|
unsigned Indentation = 0;
|
|
for (const LocationContext *LC = C.getLocationContext()->getParent();
|
|
LC != nullptr; LC = LC->getParent())
|
|
++Indentation;
|
|
|
|
// It is mildly evil to print directly to llvm::outs() rather than emitting
|
|
// warnings, but this ensures things do not get filtered out by the rest of
|
|
// the static analyzer machinery.
|
|
llvm::outs().indent(Indentation);
|
|
if (Call.getResultType()->isVoidType())
|
|
llvm::outs() << "Returning void\n";
|
|
else
|
|
llvm::outs() << "Returning " << C.getSVal(CallE) << "\n";
|
|
}
|
|
|
|
void ento::registerCallDumper(CheckerManager &mgr) {
|
|
mgr.registerChecker<CallDumper>();
|
|
}
|
|
|
|
bool ento::shouldRegisterCallDumper(const LangOptions &LO) {
|
|
return true;
|
|
}
|