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//===- unittests/Lex/NoTrivialPPDirectiveTracerTest.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/Basic/Diagnostic.h"
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Lex/HeaderSearchOptions.h"
#include "clang/Lex/ModuleLoader.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Lex/PreprocessorOptions.h"
#include "gtest/gtest.h"
#include <cstddef>
#include <initializer_list>
using namespace clang;
namespace {
class NoTrivialPPDirectiveTracerTest : public ::testing::Test {
protected:
NoTrivialPPDirectiveTracerTest()
: VFS(llvm::makeIntrusiveRefCnt<llvm::vfs::InMemoryFileSystem>()),
FileMgr(FileMgrOpts, VFS),
Diags(DiagnosticIDs::create(), DiagOpts, new IgnoringDiagConsumer()),
SourceMgr(Diags, FileMgr), TargetOpts(new TargetOptions) {
TargetOpts->Triple = "x86_64-unknown-linux-gnu";
Target = TargetInfo::CreateTargetInfo(Diags, *TargetOpts);
}
void addFile(const char *source, StringRef Filename) {
VFS->addFile(Filename, 0, llvm::MemoryBuffer::getMemBuffer(source),
/*User=*/std::nullopt,
/*Group=*/std::nullopt,
llvm::sys::fs::file_type::regular_file);
}
std::unique_ptr<Preprocessor> getPreprocessor(const char *source,
Language Lang) {
std::unique_ptr<llvm::MemoryBuffer> Buf =
llvm::MemoryBuffer::getMemBuffer(source);
SourceMgr.setMainFileID(SourceMgr.createFileID(std::move(Buf)));
std::vector<std::string> Includes;
LangOptions::setLangDefaults(LangOpts, Lang, Target->getTriple(), Includes,
LangStandard::lang_cxx20);
LangOpts.CPlusPlusModules = true;
if (Lang != Language::CXX) {
LangOpts.Modules = true;
LangOpts.ImplicitModules = true;
}
HeaderInfo.emplace(HSOpts, SourceMgr, Diags, LangOpts, Target.get());
auto DE = FileMgr.getOptionalDirectoryRef(".");
assert(DE);
auto DL = DirectoryLookup(*DE, SrcMgr::C_User, /*isFramework=*/false);
HeaderInfo->AddSearchPath(DL, /*isAngled=*/false);
return std::make_unique<Preprocessor>(PPOpts, Diags, LangOpts, SourceMgr,
*HeaderInfo, ModLoader,
/*IILookup=*/nullptr,
/*OwnsHeaderSearch=*/false);
}
IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> VFS;
FileSystemOptions FileMgrOpts;
FileManager FileMgr;
DiagnosticOptions DiagOpts;
DiagnosticsEngine Diags;
SourceManager SourceMgr;
std::shared_ptr<TargetOptions> TargetOpts;
IntrusiveRefCntPtr<TargetInfo> Target;
LangOptions LangOpts;
TrivialModuleLoader ModLoader;
HeaderSearchOptions HSOpts;
std::optional<HeaderSearch> HeaderInfo;
PreprocessorOptions PPOpts;
};
TEST_F(NoTrivialPPDirectiveTracerTest, TrivialDirective) {
const char *source = R"(
#line 7
# 1 __FILE__ 1 3
#ident "$Header:$"
#pragma comment(lib, "msvcrt.lib")
#pragma mark LLVM's world
#pragma detect_mismatch("test", "1")
#pragma clang __debug dump Test
#pragma message "test"
#pragma GCC warning "Foo"
#pragma GCC error "Foo"
#pragma gcc diagnostic push
#pragma gcc diagnostic pop
#pragma GCC diagnostic ignored "-Wframe-larger-than"
#pragma OPENCL EXTENSION __cl_clang_variadic_functions : enable
#pragma warning(push)
#pragma warning(pop)
#pragma execution_character_set(push, "UTF-8")
#pragma execution_character_set(pop)
#pragma clang assume_nonnull begin
#pragma clang assume_nonnull end
int foo;
)";
std::unique_ptr<Preprocessor> PP = getPreprocessor(source, Language::CXX);
PP->Initialize(*Target);
PP->EnterMainSourceFile();
Token Tok;
PP->Lex(Tok);
EXPECT_FALSE(PP->hasSeenNoTrivialPPDirective());
}
TEST_F(NoTrivialPPDirectiveTracerTest, IncludeDirective) {
const char *source = R"(
#include "header.h"
int foo;
)";
const char *header = R"(
#ifndef HEADER_H
#define HEADER_H
#endif // HEADER_H
)";
std::unique_ptr<Preprocessor> PP = getPreprocessor(source, Language::CXX);
addFile(header, "header.h");
PP->Initialize(*Target);
PP->EnterMainSourceFile();
Token Tok;
PP->Lex(Tok);
EXPECT_TRUE(PP->hasSeenNoTrivialPPDirective());
}
TEST_F(NoTrivialPPDirectiveTracerTest, DefineDirective) {
const char *source = R"(
#define FOO
int foo;
)";
std::unique_ptr<Preprocessor> PP = getPreprocessor(source, Language::CXX);
PP->Initialize(*Target);
PP->EnterMainSourceFile();
Token Tok;
PP->Lex(Tok);
EXPECT_TRUE(PP->hasSeenNoTrivialPPDirective());
}
TEST_F(NoTrivialPPDirectiveTracerTest, UnDefineDirective) {
const char *source = R"(
#undef FOO
int foo;
)";
std::unique_ptr<Preprocessor> PP = getPreprocessor(source, Language::CXX);
PP->Initialize(*Target);
PP->setPredefines("#define FOO");
PP->EnterMainSourceFile();
Token Tok;
PP->Lex(Tok);
EXPECT_TRUE(PP->hasSeenNoTrivialPPDirective());
}
TEST_F(NoTrivialPPDirectiveTracerTest, IfDefinedDirective) {
const char *source = R"(
#if defined(FOO)
#endif
int foo;
)";
std::unique_ptr<Preprocessor> PP = getPreprocessor(source, Language::CXX);
PP->Initialize(*Target);
PP->setPredefines("#define FOO");
PP->EnterMainSourceFile();
Token Tok;
PP->Lex(Tok);
EXPECT_TRUE(PP->hasSeenNoTrivialPPDirective());
}
} // namespace
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