1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177
|
//===- unittests/Frontend/ASTUnitTest.cpp - ASTUnit tests -----------------===//
//
// 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 <fstream>
#include "clang/Basic/FileManager.h"
#include "clang/Frontend/ASTUnit.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/CompilerInvocation.h"
#include "clang/Frontend/PCHContainerOperations.h"
#include "clang/Lex/HeaderSearch.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/ToolOutputFile.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace clang;
namespace {
class ASTUnitTest : public ::testing::Test {
protected:
int FD;
llvm::SmallString<256> InputFileName;
std::unique_ptr<ToolOutputFile> input_file;
IntrusiveRefCntPtr<DiagnosticsEngine> Diags;
std::shared_ptr<CompilerInvocation> CInvok;
std::shared_ptr<PCHContainerOperations> PCHContainerOps;
std::unique_ptr<ASTUnit> createASTUnit(bool isVolatile) {
EXPECT_FALSE(llvm::sys::fs::createTemporaryFile("ast-unit", "cpp", FD,
InputFileName));
input_file = std::make_unique<ToolOutputFile>(InputFileName, FD);
input_file->os() << "";
const char *Args[] = {"clang", "-xc++", InputFileName.c_str()};
Diags = CompilerInstance::createDiagnostics(new DiagnosticOptions());
CInvok = createInvocationFromCommandLine(Args, Diags);
if (!CInvok)
return nullptr;
FileManager *FileMgr =
new FileManager(FileSystemOptions(), vfs::getRealFileSystem());
PCHContainerOps = std::make_shared<PCHContainerOperations>();
return ASTUnit::LoadFromCompilerInvocation(
CInvok, PCHContainerOps, Diags, FileMgr, false, CaptureDiagsKind::None,
0, TU_Complete, false, false, isVolatile);
}
};
TEST_F(ASTUnitTest, SaveLoadPreservesLangOptionsInPrintingPolicy) {
// Check that the printing policy is restored with the correct language
// options when loading an ASTUnit from a file. To this end, an ASTUnit
// for a C++ translation unit is set up and written to a temporary file.
// By default `UseVoidForZeroParams` is true for non-C++ language options,
// thus we can check this field after loading the ASTUnit to deduce whether
// the correct (C++) language options were used when setting up the printing
// policy.
{
PrintingPolicy PolicyWithDefaultLangOpt(LangOptions{});
EXPECT_TRUE(PolicyWithDefaultLangOpt.UseVoidForZeroParams);
}
std::unique_ptr<ASTUnit> AST = createASTUnit(false);
if (!AST)
FAIL() << "failed to create ASTUnit";
EXPECT_FALSE(AST->getASTContext().getPrintingPolicy().UseVoidForZeroParams);
llvm::SmallString<256> ASTFileName;
ASSERT_FALSE(
llvm::sys::fs::createTemporaryFile("ast-unit", "ast", FD, ASTFileName));
ToolOutputFile ast_file(ASTFileName, FD);
AST->Save(ASTFileName.str());
EXPECT_TRUE(llvm::sys::fs::exists(ASTFileName));
std::unique_ptr<ASTUnit> AU = ASTUnit::LoadFromASTFile(
std::string(ASTFileName.str()), PCHContainerOps->getRawReader(),
ASTUnit::LoadEverything, Diags, FileSystemOptions(),
/*UseDebugInfo=*/false);
if (!AU)
FAIL() << "failed to load ASTUnit";
EXPECT_FALSE(AU->getASTContext().getPrintingPolicy().UseVoidForZeroParams);
}
TEST_F(ASTUnitTest, GetBufferForFileMemoryMapping) {
std::unique_ptr<ASTUnit> AST = createASTUnit(true);
if (!AST)
FAIL() << "failed to create ASTUnit";
std::unique_ptr<llvm::MemoryBuffer> memoryBuffer =
AST->getBufferForFile(InputFileName);
EXPECT_NE(memoryBuffer->getBufferKind(),
llvm::MemoryBuffer::MemoryBuffer_MMap);
}
TEST_F(ASTUnitTest, ModuleTextualHeader) {
llvm::IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> InMemoryFs =
new llvm::vfs::InMemoryFileSystem();
InMemoryFs->addFile("test.cpp", 0, llvm::MemoryBuffer::getMemBuffer(R"cpp(
#include "Textual.h"
void foo() {}
)cpp"));
InMemoryFs->addFile("m.modulemap", 0, llvm::MemoryBuffer::getMemBuffer(R"cpp(
module M {
module Textual {
textual header "Textual.h"
}
}
)cpp"));
InMemoryFs->addFile("Textual.h", 0, llvm::MemoryBuffer::getMemBuffer(R"cpp(
void foo();
)cpp"));
const char *Args[] = {"clang", "test.cpp", "-fmodule-map-file=m.modulemap",
"-fmodule-name=M"};
Diags = CompilerInstance::createDiagnostics(new DiagnosticOptions());
CInvok = createInvocationFromCommandLine(Args, Diags);
ASSERT_TRUE(CInvok);
FileManager *FileMgr = new FileManager(FileSystemOptions(), InMemoryFs);
PCHContainerOps = std::make_shared<PCHContainerOperations>();
auto AU = ASTUnit::LoadFromCompilerInvocation(
CInvok, PCHContainerOps, Diags, FileMgr, false, CaptureDiagsKind::None, 1,
TU_Complete, false, false, false);
ASSERT_TRUE(AU);
auto File = AU->getFileManager().getFileRef("Textual.h", false, false);
ASSERT_TRUE(bool(File));
// Verify that we do not crash here.
EXPECT_TRUE(AU->getPreprocessor().getHeaderSearchInfo().getExistingFileInfo(
&File->getFileEntry()));
}
TEST_F(ASTUnitTest, LoadFromCommandLineEarlyError) {
EXPECT_FALSE(
llvm::sys::fs::createTemporaryFile("ast-unit", "c", FD, InputFileName));
input_file = std::make_unique<ToolOutputFile>(InputFileName, FD);
input_file->os() << "";
const char *Args[] = {"clang", "-target", "foobar", InputFileName.c_str()};
auto Diags = CompilerInstance::createDiagnostics(new DiagnosticOptions());
auto PCHContainerOps = std::make_shared<PCHContainerOperations>();
std::unique_ptr<clang::ASTUnit> ErrUnit;
ASTUnit *AST = ASTUnit::LoadFromCommandLine(
&Args[0], &Args[4], PCHContainerOps, Diags, "", false,
CaptureDiagsKind::All, None, true, 0, TU_Complete, false, false, false,
SkipFunctionBodiesScope::None, false, true, false, false, None, &ErrUnit,
nullptr);
ASSERT_EQ(AST, nullptr);
ASSERT_NE(ErrUnit, nullptr);
ASSERT_TRUE(Diags->hasErrorOccurred());
ASSERT_NE(ErrUnit->stored_diag_size(), 0U);
}
} // anonymous namespace
|