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//===- unittests/StaticAnalyzer/RegisterCustomCheckersTest.cpp ------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "clang/Frontend/CompilerInstance.h"
#include "clang/StaticAnalyzer/Core/BugReporter/BugReporter.h"
#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h"
#include "clang/StaticAnalyzer/Core/Checker.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h"
#include "clang/StaticAnalyzer/Frontend/AnalysisConsumer.h"
#include "clang/StaticAnalyzer/Frontend/CheckerRegistry.h"
#include "clang/Tooling/Tooling.h"
#include "gtest/gtest.h"
namespace clang {
namespace ento {
namespace {
template <typename CheckerT>
class TestAction : public ASTFrontendAction {
class DiagConsumer : public PathDiagnosticConsumer {
llvm::raw_ostream &Output;
public:
DiagConsumer(llvm::raw_ostream &Output) : Output(Output) {}
void FlushDiagnosticsImpl(std::vector<const PathDiagnostic *> &Diags,
FilesMade *filesMade) override {
for (const auto *PD : Diags)
Output << PD->getCheckName() << ":" << PD->getShortDescription();
}
StringRef getName() const override { return "Test"; }
};
llvm::raw_ostream &DiagsOutput;
public:
TestAction(llvm::raw_ostream &DiagsOutput) : DiagsOutput(DiagsOutput) {}
std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &Compiler,
StringRef File) override {
std::unique_ptr<AnalysisASTConsumer> AnalysisConsumer =
CreateAnalysisConsumer(Compiler);
AnalysisConsumer->AddDiagnosticConsumer(new DiagConsumer(DiagsOutput));
Compiler.getAnalyzerOpts()->CheckersControlList = {
{"custom.CustomChecker", true}};
AnalysisConsumer->AddCheckerRegistrationFn([](CheckerRegistry &Registry) {
Registry.addChecker<CheckerT>("custom.CustomChecker", "Description", "");
});
return std::move(AnalysisConsumer);
}
};
template <typename CheckerT>
bool runCheckerOnCode(const std::string &Code, std::string &Diags) {
llvm::raw_string_ostream OS(Diags);
return tooling::runToolOnCode(new TestAction<CheckerT>(OS), Code);
}
template <typename CheckerT>
bool runCheckerOnCode(const std::string &Code) {
std::string Diags;
return runCheckerOnCode<CheckerT>(Code, Diags);
}
class CustomChecker : public Checker<check::ASTCodeBody> {
public:
void checkASTCodeBody(const Decl *D, AnalysisManager &Mgr,
BugReporter &BR) const {
BR.EmitBasicReport(D, this, "Custom diagnostic", categories::LogicError,
"Custom diagnostic description",
PathDiagnosticLocation(D, Mgr.getSourceManager()), {});
}
};
TEST(RegisterCustomCheckers, RegisterChecker) {
std::string Diags;
EXPECT_TRUE(runCheckerOnCode<CustomChecker>("void f() {;}", Diags));
EXPECT_EQ(Diags, "custom.CustomChecker:Custom diagnostic description");
}
class LocIncDecChecker : public Checker<check::Location> {
public:
void checkLocation(SVal Loc, bool IsLoad, const Stmt *S,
CheckerContext &C) const {
auto UnaryOp = dyn_cast<UnaryOperator>(S);
if (UnaryOp && !IsLoad)
EXPECT_FALSE(UnaryOp->isIncrementOp());
}
};
TEST(RegisterCustomCheckers, CheckLocationIncDec) {
EXPECT_TRUE(
runCheckerOnCode<LocIncDecChecker>("void f() { int *p; (*p)++; }"));
}
}
}
}
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