LoadResult DiagLoader::readString(CXLoadedDiagnosticSetImpl &TopDiags,
llvm::StringRef &RetStr,
llvm::StringRef errorContext,
RecordData &Record,
StringRef Blob,
bool allowEmptyString) {
// Basic buffer overflow check.
if (Blob.size() > 65536) {
reportInvalidFile(std::string("Out-of-bounds string in ") +
std::string(errorContext));
return Failure;
}
if (allowEmptyString && Record.size() >= 1 && Blob.size() == 0) {
RetStr = "";
return Success;
}
if (Record.size() < 1 || Blob.size() == 0) {
reportInvalidFile(std::string("Corrupted ") + std::string(errorContext)
+ std::string(" entry"));
return Failure;
}
RetStr = TopDiags.makeString(Blob);
return Success;
}
StatusWith<RecordData> KVRecordStore::updateWithDamages( OperationContext* txn,
const RecordId& id,
const RecordData& oldRec,
const char* damageSource,
const mutablebson::DamageVector& damages ) {
const KeyString key(id);
const Slice oldValue(oldRec.data(), oldRec.size());
const KVUpdateWithDamagesMessage message(damageSource, damages);
// updateWithDamages can't change the number or size of records, so we don't need to update
// stats.
const Status s = _db->update(txn, Slice::of(key), oldValue, message);
if (!s.isOK()) {
return StatusWith<RecordData>(s);
}
// We also need to reach in and screw with the old doc's data so that the update system gets
// the new image, because the update system is assuming mmapv1's behavior. Sigh.
for (mutablebson::DamageVector::const_iterator it = damages.begin(); it != damages.end(); it++) {
const mutablebson::DamageEvent &event = *it;
invariant(event.targetOffset + event.size < static_cast<uint32_t>(oldRec.size()));
std::copy(damageSource + event.sourceOffset, damageSource + event.sourceOffset + event.size,
/* eek */
const_cast<char *>(oldRec.data()) + event.targetOffset);
}
return StatusWith<RecordData>(oldRec);
}
// Insert a record and try to perform an in-place update on it.
TEST( RecordStoreTestHarness, UpdateWithDamages ) {
scoped_ptr<HarnessHelper> harnessHelper( newHarnessHelper() );
scoped_ptr<RecordStore> rs( harnessHelper->newNonCappedRecordStore() );
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
ASSERT_EQUALS( 0, rs->numRecords( opCtx.get() ) );
}
string data = "00010111";
DiskLoc loc;
const RecordData rec(data.c_str(), data.size() + 1);
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
{
WriteUnitOfWork uow( opCtx.get() );
StatusWith<DiskLoc> res = rs->insertRecord( opCtx.get(),
rec.data(),
rec.size(),
false );
ASSERT_OK( res.getStatus() );
loc = res.getValue();
uow.commit();
}
}
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
ASSERT_EQUALS( 1, rs->numRecords( opCtx.get() ) );
}
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
{
mutablebson::DamageVector dv( 3 );
dv[0].sourceOffset = 5;
dv[0].targetOffset = 0;
dv[0].size = 2;
dv[1].sourceOffset = 3;
dv[1].targetOffset = 2;
dv[1].size = 3;
dv[2].sourceOffset = 0;
dv[2].targetOffset = 5;
dv[2].size = 3;
WriteUnitOfWork uow( opCtx.get() );
ASSERT_OK( rs->updateWithDamages( opCtx.get(), loc, rec, data.c_str(), dv ) );
uow.commit();
}
}
data = "11101000";
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
{
RecordData record = rs->dataFor( opCtx.get(), loc );
ASSERT_EQUALS( data, record.data() );
}
}
}
LoadResult DiagLoader::readLocation(CXLoadedDiagnosticSetImpl &TopDiags,
RecordData &Record, unsigned &offset,
CXLoadedDiagnostic::Location &Loc) {
if (Record.size() < offset + 3) {
reportInvalidFile("Corrupted source location");
return Failure;
}
unsigned fileID = Record[offset++];
if (fileID == 0) {
// Sentinel value.
Loc.file = 0;
Loc.line = 0;
Loc.column = 0;
Loc.offset = 0;
return Success;
}
const FileEntry *FE = TopDiags.Files[fileID];
if (!FE) {
reportInvalidFile("Corrupted file entry in source location");
return Failure;
}
Loc.file = const_cast<FileEntry *>(FE);
Loc.line = Record[offset++];
Loc.column = Record[offset++];
Loc.offset = Record[offset++];
return Success;
}
TEST( RecordStoreTestHarness, UpdateInPlace1 ) {
scoped_ptr<HarnessHelper> harnessHelper( newHarnessHelper() );
scoped_ptr<RecordStore> rs( harnessHelper->newNonCappedRecordStore() );
if (!rs->updateWithDamagesSupported())
return;
string s1 = "aaa111bbb";
string s2 = "aaa222bbb";
RecordId loc;
const RecordData s1Rec(s1.c_str(), s1.size() + 1);
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
{
WriteUnitOfWork uow( opCtx.get() );
StatusWith<RecordId> res = rs->insertRecord( opCtx.get(),
s1Rec.data(),
s1Rec.size(),
-1 );
ASSERT_OK( res.getStatus() );
loc = res.getValue();
uow.commit();
}
}
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
ASSERT_EQUALS( s1, rs->dataFor( opCtx.get(), loc ).data() );
}
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
{
WriteUnitOfWork uow( opCtx.get() );
const char* damageSource = "222";
mutablebson::DamageVector dv;
dv.push_back( mutablebson::DamageEvent() );
dv[0].sourceOffset = 0;
dv[0].targetOffset = 3;
dv[0].size = 3;
Status res = rs->updateWithDamages( opCtx.get(),
loc,
s1Rec,
damageSource,
dv );
ASSERT_OK( res );
uow.commit();
}
}
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
ASSERT_EQUALS( s2, rs->dataFor( opCtx.get(), loc ).data() );
}
}
TEST( RocksRecordStoreTest, Snapshots1 ) {
unittest::TempDir td( _rocksRecordStoreTestDir );
scoped_ptr<rocksdb::DB> db( getDB( td.path() ) );
DiskLoc loc;
int size = -1;
{
RocksRecordStore rs( "foo.bar", db.get(),
db->DefaultColumnFamily(),
db->DefaultColumnFamily() );
string s = "test string";
size = s.length() + 1;
MyOperationContext opCtx( db.get() );
{
WriteUnitOfWork uow( opCtx.recoveryUnit() );
StatusWith<DiskLoc> res = rs.insertRecord( &opCtx, s.c_str(), s.size() + 1, -1 );
ASSERT_OK( res.getStatus() );
loc = res.getValue();
}
}
{
MyOperationContext opCtx( db.get() );
MyOperationContext opCtx2( db.get() );
RocksRecordStore rs( "foo.bar", db.get(),
db->DefaultColumnFamily(),
db->DefaultColumnFamily() );
rs.deleteRecord( &opCtx, loc );
RecordData recData = rs.dataFor( loc/*, &opCtx */ );
ASSERT( !recData.data() && recData.size() == 0 );
// XXX this test doesn't yet work, but there should be some notion of snapshots,
// and the op context that doesn't see the deletion shouldn't know that this data
// has been deleted
RecordData recData2 = rs.dataFor( loc/*, &opCtx2 */ );
ASSERT( recData.data() && recData.size() == size );
}
}
// Insert a record and try to call updateWithDamages() with an empty DamageVector.
TEST( RecordStoreTestHarness, UpdateWithNoDamages ) {
scoped_ptr<HarnessHelper> harnessHelper( newHarnessHelper() );
scoped_ptr<RecordStore> rs( harnessHelper->newNonCappedRecordStore() );
if (!rs->updateWithDamagesSupported())
return;
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
ASSERT_EQUALS( 0, rs->numRecords( opCtx.get() ) );
}
string data = "my record";
RecordId loc;
const RecordData rec(data.c_str(), data.size() + 1);
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
{
WriteUnitOfWork uow( opCtx.get() );
StatusWith<RecordId> res = rs->insertRecord( opCtx.get(),
rec.data(),
rec.size(),
false );
ASSERT_OK( res.getStatus() );
loc = res.getValue();
uow.commit();
}
}
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
ASSERT_EQUALS( 1, rs->numRecords( opCtx.get() ) );
}
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
{
mutablebson::DamageVector dv;
WriteUnitOfWork uow( opCtx.get() );
ASSERT_OK( rs->updateWithDamages( opCtx.get(), loc, rec, "", dv ) );
uow.commit();
}
}
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
{
RecordData record = rs->dataFor( opCtx.get(), loc );
ASSERT_EQUALS( data, record.data() );
}
}
}
LoadResult DiagLoader::readMetaBlock(llvm::BitstreamCursor &Stream) {
if (Stream.EnterSubBlock(lfort::serialized_diags::BLOCK_META)) {
reportInvalidFile("Malformed metadata block");
return Failure;
}
bool versionChecked = false;
while (true) {
unsigned blockOrCode = 0;
StreamResult Res = readToNextRecordOrBlock(Stream, "Metadata Block",
blockOrCode);
switch(Res) {
case Read_EndOfStream:
llvm_unreachable("EndOfStream handled by readToNextRecordOrBlock");
case Read_Failure:
return Failure;
case Read_Record:
break;
case Read_BlockBegin:
if (Stream.SkipBlock()) {
reportInvalidFile("Malformed metadata block");
return Failure;
}
case Read_BlockEnd:
if (!versionChecked) {
reportInvalidFile("Diagnostics file does not contain version"
" information");
return Failure;
}
return Success;
}
RecordData Record;
const char *Blob;
unsigned BlobLen;
unsigned recordID = Stream.ReadRecord(blockOrCode, Record, &Blob, &BlobLen);
if (recordID == serialized_diags::RECORD_VERSION) {
if (Record.size() < 1) {
reportInvalidFile("malformed VERSION identifier in diagnostics file");
return Failure;
}
if (Record[0] > MaxSupportedVersion) {
reportInvalidFile("diagnosics file is a newer version than the one "
"supported");
return Failure;
}
versionChecked = true;
}
}
}
// Insert multiple records and verify their contents by calling dataFor()
// on each of the returned RecordIds.
TEST(RecordStoreTestHarness, DataForMultiple) {
unique_ptr<HarnessHelper> harnessHelper(newHarnessHelper());
unique_ptr<RecordStore> rs(harnessHelper->newNonCappedRecordStore());
{
unique_ptr<OperationContext> opCtx(harnessHelper->newOperationContext());
ASSERT_EQUALS(0, rs->numRecords(opCtx.get()));
}
const int nToInsert = 10;
RecordId locs[nToInsert];
for (int i = 0; i < nToInsert; i++) {
unique_ptr<OperationContext> opCtx(harnessHelper->newOperationContext());
{
stringstream ss;
ss << "record----" << i;
string data = ss.str();
WriteUnitOfWork uow(opCtx.get());
StatusWith<RecordId> res =
rs->insertRecord(opCtx.get(), data.c_str(), data.size() + 1, false);
ASSERT_OK(res.getStatus());
locs[i] = res.getValue();
uow.commit();
}
}
{
unique_ptr<OperationContext> opCtx(harnessHelper->newOperationContext());
ASSERT_EQUALS(nToInsert, rs->numRecords(opCtx.get()));
}
for (int i = 0; i < nToInsert; i++) {
unique_ptr<OperationContext> opCtx(harnessHelper->newOperationContext());
{
stringstream ss;
ss << "record----" << i;
string data = ss.str();
RecordData record = rs->dataFor(opCtx.get(), locs[i]);
ASSERT_EQUALS(data.size() + 1, static_cast<size_t>(record.size()));
ASSERT_EQUALS(data, record.data());
}
}
}
// Insert a record and verify its contents by calling dataFor()
// on the returned RecordId.
TEST(RecordStoreTestHarness, DataFor) {
unique_ptr<HarnessHelper> harnessHelper(newHarnessHelper());
unique_ptr<RecordStore> rs(harnessHelper->newNonCappedRecordStore());
{
unique_ptr<OperationContext> opCtx(harnessHelper->newOperationContext());
ASSERT_EQUALS(0, rs->numRecords(opCtx.get()));
}
string data = "record-";
RecordId loc;
{
unique_ptr<OperationContext> opCtx(harnessHelper->newOperationContext());
{
WriteUnitOfWork uow(opCtx.get());
StatusWith<RecordId> res =
rs->insertRecord(opCtx.get(), data.c_str(), data.size() + 1, false);
ASSERT_OK(res.getStatus());
loc = res.getValue();
uow.commit();
}
}
{
unique_ptr<OperationContext> opCtx(harnessHelper->newOperationContext());
ASSERT_EQUALS(1, rs->numRecords(opCtx.get()));
}
{
unique_ptr<OperationContext> opCtx(harnessHelper->newOperationContext());
{
RecordData record = rs->dataFor(opCtx.get(), loc);
ASSERT_EQUALS(data.size() + 1, static_cast<size_t>(record.size()));
ASSERT_EQUALS(data, record.data());
}
}
}
LoadResult DiagLoader::readDiagnosticBlock(llvm::BitstreamCursor &Stream,
CXDiagnosticSetImpl &Diags,
CXLoadedDiagnosticSetImpl &TopDiags){
if (Stream.EnterSubBlock(clang::serialized_diags::BLOCK_DIAG)) {
reportInvalidFile("malformed diagnostic block");
return Failure;
}
OwningPtr<CXLoadedDiagnostic> D(new CXLoadedDiagnostic());
RecordData Record;
while (true) {
unsigned blockOrCode = 0;
StreamResult Res = readToNextRecordOrBlock(Stream, "Diagnostic Block",
blockOrCode);
switch (Res) {
case Read_EndOfStream:
llvm_unreachable("EndOfStream handled in readToNextRecordOrBlock");
case Read_Failure:
return Failure;
case Read_BlockBegin: {
// The only blocks we care about are subdiagnostics.
if (blockOrCode != serialized_diags::BLOCK_DIAG) {
if (!Stream.SkipBlock()) {
reportInvalidFile("Invalid subblock in Diagnostics block");
return Failure;
}
} else if (readDiagnosticBlock(Stream, D->getChildDiagnostics(),
TopDiags)) {
return Failure;
}
continue;
}
case Read_BlockEnd:
Diags.appendDiagnostic(D.take());
return Success;
case Read_Record:
break;
}
// Read the record.
Record.clear();
StringRef Blob;
unsigned recID = Stream.readRecord(blockOrCode, Record, &Blob);
if (recID < serialized_diags::RECORD_FIRST ||
recID > serialized_diags::RECORD_LAST)
continue;
switch ((serialized_diags::RecordIDs)recID) {
case serialized_diags::RECORD_VERSION:
continue;
case serialized_diags::RECORD_CATEGORY:
if (readString(TopDiags, TopDiags.Categories, "category", Record,
Blob, /* allowEmptyString */ true))
return Failure;
continue;
case serialized_diags::RECORD_DIAG_FLAG:
if (readString(TopDiags, TopDiags.WarningFlags, "warning flag", Record,
Blob))
return Failure;
continue;
case serialized_diags::RECORD_FILENAME: {
if (readString(TopDiags, TopDiags.FileNames, "filename", Record,
Blob))
return Failure;
if (Record.size() < 3) {
reportInvalidFile("Invalid file entry");
return Failure;
}
const FileEntry *FE =
TopDiags.FakeFiles.getVirtualFile(TopDiags.FileNames[Record[0]],
/* size */ Record[1],
/* time */ Record[2]);
TopDiags.Files[Record[0]] = FE;
continue;
}
case serialized_diags::RECORD_SOURCE_RANGE: {
CXSourceRange SR;
if (readRange(TopDiags, Record, 0, SR))
return Failure;
D->Ranges.push_back(SR);
continue;
}
case serialized_diags::RECORD_FIXIT: {
CXSourceRange SR;
if (readRange(TopDiags, Record, 0, SR))
return Failure;
llvm::StringRef RetStr;
if (readString(TopDiags, RetStr, "FIXIT", Record, Blob,
/* allowEmptyString */ true))
return Failure;
D->FixIts.push_back(std::make_pair(SR, createCXString(RetStr, false)));
continue;
}
case serialized_diags::RECORD_DIAG: {
D->severity = Record[0];
unsigned offset = 1;
if (readLocation(TopDiags, Record, offset, D->DiagLoc))
return Failure;
D->category = Record[offset++];
unsigned diagFlag = Record[offset++];
D->DiagOption = diagFlag ? TopDiags.WarningFlags[diagFlag] : "";
D->CategoryText = D->category ? TopDiags.Categories[D->category] : "";
D->Spelling = TopDiags.makeString(Blob);
continue;
}
}
}
}
/// \brief Read the declaration at the given offset from the PCH file.
Decl *PCHReader::ReadDeclRecord(uint64_t Offset, unsigned Index) {
// Keep track of where we are in the stream, then jump back there
// after reading this declaration.
SavedStreamPosition SavedPosition(DeclsCursor);
// Note that we are loading a declaration record.
LoadingTypeOrDecl Loading(*this);
DeclsCursor.JumpToBit(Offset);
RecordData Record;
unsigned Code = DeclsCursor.ReadCode();
unsigned Idx = 0;
PCHDeclReader Reader(*this, Record, Idx);
Decl *D = 0;
switch ((pch::DeclCode)DeclsCursor.ReadRecord(Code, Record)) {
case pch::DECL_ATTR:
case pch::DECL_CONTEXT_LEXICAL:
case pch::DECL_CONTEXT_VISIBLE:
assert(false && "Record cannot be de-serialized with ReadDeclRecord");
break;
case pch::DECL_TRANSLATION_UNIT:
assert(Index == 0 && "Translation unit must be at index 0");
D = Context->getTranslationUnitDecl();
break;
case pch::DECL_TYPEDEF:
D = TypedefDecl::Create(*Context, 0, SourceLocation(), 0, 0);
break;
case pch::DECL_ENUM:
D = EnumDecl::Create(*Context, 0, SourceLocation(), 0, SourceLocation(), 0);
break;
case pch::DECL_RECORD:
D = RecordDecl::Create(*Context, TagDecl::TK_struct, 0, SourceLocation(),
0, SourceLocation(), 0);
break;
case pch::DECL_ENUM_CONSTANT:
D = EnumConstantDecl::Create(*Context, 0, SourceLocation(), 0, QualType(),
0, llvm::APSInt());
break;
case pch::DECL_FUNCTION:
D = FunctionDecl::Create(*Context, 0, SourceLocation(), DeclarationName(),
QualType(), 0);
break;
case pch::DECL_OBJC_METHOD:
D = ObjCMethodDecl::Create(*Context, SourceLocation(), SourceLocation(),
Selector(), QualType(), 0, 0);
break;
case pch::DECL_OBJC_INTERFACE:
D = ObjCInterfaceDecl::Create(*Context, 0, SourceLocation(), 0);
break;
case pch::DECL_OBJC_IVAR:
D = ObjCIvarDecl::Create(*Context, 0, SourceLocation(), 0, QualType(), 0,
ObjCIvarDecl::None);
break;
case pch::DECL_OBJC_PROTOCOL:
D = ObjCProtocolDecl::Create(*Context, 0, SourceLocation(), 0);
break;
case pch::DECL_OBJC_AT_DEFS_FIELD:
D = ObjCAtDefsFieldDecl::Create(*Context, 0, SourceLocation(), 0,
QualType(), 0);
break;
case pch::DECL_OBJC_CLASS:
D = ObjCClassDecl::Create(*Context, 0, SourceLocation());
break;
case pch::DECL_OBJC_FORWARD_PROTOCOL:
D = ObjCForwardProtocolDecl::Create(*Context, 0, SourceLocation());
break;
case pch::DECL_OBJC_CATEGORY:
D = ObjCCategoryDecl::Create(*Context, 0, SourceLocation(),
SourceLocation(), SourceLocation(), 0);
break;
case pch::DECL_OBJC_CATEGORY_IMPL:
D = ObjCCategoryImplDecl::Create(*Context, 0, SourceLocation(), 0, 0);
break;
case pch::DECL_OBJC_IMPLEMENTATION:
D = ObjCImplementationDecl::Create(*Context, 0, SourceLocation(), 0, 0);
break;
case pch::DECL_OBJC_COMPATIBLE_ALIAS:
D = ObjCCompatibleAliasDecl::Create(*Context, 0, SourceLocation(), 0, 0);
break;
case pch::DECL_OBJC_PROPERTY:
D = ObjCPropertyDecl::Create(*Context, 0, SourceLocation(), 0, SourceLocation(),
QualType());
break;
case pch::DECL_OBJC_PROPERTY_IMPL:
D = ObjCPropertyImplDecl::Create(*Context, 0, SourceLocation(),
SourceLocation(), 0,
ObjCPropertyImplDecl::Dynamic, 0);
break;
case pch::DECL_FIELD:
D = FieldDecl::Create(*Context, 0, SourceLocation(), 0, QualType(), 0, 0,
false);
break;
case pch::DECL_VAR:
D = VarDecl::Create(*Context, 0, SourceLocation(), 0, QualType(), 0,
VarDecl::None);
break;
case pch::DECL_IMPLICIT_PARAM:
D = ImplicitParamDecl::Create(*Context, 0, SourceLocation(), 0, QualType());
break;
case pch::DECL_PARM_VAR:
D = ParmVarDecl::Create(*Context, 0, SourceLocation(), 0, QualType(), 0,
VarDecl::None, 0);
break;
case pch::DECL_FILE_SCOPE_ASM:
D = FileScopeAsmDecl::Create(*Context, 0, SourceLocation(), 0);
break;
case pch::DECL_BLOCK:
D = BlockDecl::Create(*Context, 0, SourceLocation());
break;
case pch::DECL_NAMESPACE:
D = NamespaceDecl::Create(*Context, 0, SourceLocation(), 0);
break;
}
assert(D && "Unknown declaration reading PCH file");
LoadedDecl(Index, D);
Reader.Visit(D);
// If this declaration is also a declaration context, get the
// offsets for its tables of lexical and visible declarations.
if (DeclContext *DC = dyn_cast<DeclContext>(D)) {
std::pair<uint64_t, uint64_t> Offsets = Reader.VisitDeclContext(DC);
if (Offsets.first || Offsets.second) {
DC->setHasExternalLexicalStorage(Offsets.first != 0);
DC->setHasExternalVisibleStorage(Offsets.second != 0);
DeclContextOffsets[DC] = Offsets;
}
}
assert(Idx == Record.size());
// If we have deserialized a declaration that has a definition the
// AST consumer might need to know about, notify the consumer
// about that definition now or queue it for later.
if (isConsumerInterestedIn(D)) {
if (Consumer) {
DeclGroupRef DG(D);
Consumer->HandleTopLevelDecl(DG);
} else {
InterestingDecls.push_back(D);
}
}
return D;
}
/// \brief Reads attributes from the current stream position.
Attr *PCHReader::ReadAttributes() {
unsigned Code = DeclsCursor.ReadCode();
assert(Code == llvm::bitc::UNABBREV_RECORD &&
"Expected unabbreviated record"); (void)Code;
RecordData Record;
unsigned Idx = 0;
unsigned RecCode = DeclsCursor.ReadRecord(Code, Record);
assert(RecCode == pch::DECL_ATTR && "Expected attribute record");
(void)RecCode;
#define SIMPLE_ATTR(Name) \
case Attr::Name: \
New = ::new (*Context) Name##Attr(); \
break
#define STRING_ATTR(Name) \
case Attr::Name: \
New = ::new (*Context) Name##Attr(*Context, ReadString(Record, Idx)); \
break
#define UNSIGNED_ATTR(Name) \
case Attr::Name: \
New = ::new (*Context) Name##Attr(Record[Idx++]); \
break
Attr *Attrs = 0;
while (Idx < Record.size()) {
Attr *New = 0;
Attr::Kind Kind = (Attr::Kind)Record[Idx++];
bool IsInherited = Record[Idx++];
switch (Kind) {
default:
assert(0 && "Unknown attribute!");
break;
STRING_ATTR(Alias);
UNSIGNED_ATTR(Aligned);
SIMPLE_ATTR(AlwaysInline);
SIMPLE_ATTR(AnalyzerNoReturn);
STRING_ATTR(Annotate);
STRING_ATTR(AsmLabel);
SIMPLE_ATTR(BaseCheck);
case Attr::Blocks:
New = ::new (*Context) BlocksAttr(
(BlocksAttr::BlocksAttrTypes)Record[Idx++]);
break;
SIMPLE_ATTR(CDecl);
case Attr::Cleanup:
New = ::new (*Context) CleanupAttr(
cast<FunctionDecl>(GetDecl(Record[Idx++])));
break;
SIMPLE_ATTR(Const);
UNSIGNED_ATTR(Constructor);
SIMPLE_ATTR(DLLExport);
SIMPLE_ATTR(DLLImport);
SIMPLE_ATTR(Deprecated);
UNSIGNED_ATTR(Destructor);
SIMPLE_ATTR(FastCall);
SIMPLE_ATTR(Final);
case Attr::Format: {
std::string Type = ReadString(Record, Idx);
unsigned FormatIdx = Record[Idx++];
unsigned FirstArg = Record[Idx++];
New = ::new (*Context) FormatAttr(*Context, Type, FormatIdx, FirstArg);
break;
}
case Attr::FormatArg: {
unsigned FormatIdx = Record[Idx++];
New = ::new (*Context) FormatArgAttr(FormatIdx);
break;
}
case Attr::Sentinel: {
int sentinel = Record[Idx++];
int nullPos = Record[Idx++];
New = ::new (*Context) SentinelAttr(sentinel, nullPos);
break;
}
SIMPLE_ATTR(GNUInline);
SIMPLE_ATTR(Hiding);
case Attr::IBActionKind:
New = ::new (*Context) IBActionAttr();
break;
case Attr::IBOutletKind:
New = ::new (*Context) IBOutletAttr();
break;
SIMPLE_ATTR(Malloc);
SIMPLE_ATTR(NoDebug);
SIMPLE_ATTR(NoInline);
SIMPLE_ATTR(NoReturn);
SIMPLE_ATTR(NoThrow);
case Attr::NonNull: {
unsigned Size = Record[Idx++];
llvm::SmallVector<unsigned, 16> ArgNums;
ArgNums.insert(ArgNums.end(), &Record[Idx], &Record[Idx] + Size);
Idx += Size;
New = ::new (*Context) NonNullAttr(*Context, ArgNums.data(), Size);
break;
}
case Attr::ReqdWorkGroupSize: {
unsigned X = Record[Idx++];
unsigned Y = Record[Idx++];
unsigned Z = Record[Idx++];
New = ::new (*Context) ReqdWorkGroupSizeAttr(X, Y, Z);
break;
}
SIMPLE_ATTR(ObjCException);
SIMPLE_ATTR(ObjCNSObject);
SIMPLE_ATTR(CFReturnsNotRetained);
SIMPLE_ATTR(CFReturnsRetained);
SIMPLE_ATTR(NSReturnsNotRetained);
SIMPLE_ATTR(NSReturnsRetained);
SIMPLE_ATTR(Overloadable);
SIMPLE_ATTR(Override);
SIMPLE_ATTR(Packed);
UNSIGNED_ATTR(PragmaPack);
SIMPLE_ATTR(Pure);
UNSIGNED_ATTR(Regparm);
STRING_ATTR(Section);
SIMPLE_ATTR(StdCall);
SIMPLE_ATTR(TransparentUnion);
SIMPLE_ATTR(Unavailable);
SIMPLE_ATTR(Unused);
SIMPLE_ATTR(Used);
case Attr::Visibility:
New = ::new (*Context) VisibilityAttr(
(VisibilityAttr::VisibilityTypes)Record[Idx++]);
break;
SIMPLE_ATTR(WarnUnusedResult);
SIMPLE_ATTR(Weak);
SIMPLE_ATTR(WeakRef);
SIMPLE_ATTR(WeakImport);
}
assert(New && "Unable to decode attribute?");
New->setInherited(IsInherited);
New->setNext(Attrs);
Attrs = New;
}
#undef UNSIGNED_ATTR
#undef STRING_ATTR
#undef SIMPLE_ATTR
// The list of attributes was built backwards. Reverse the list
// before returning it.
Attr *PrevAttr = 0, *NextAttr = 0;
while (Attrs) {
NextAttr = Attrs->getNext();
Attrs->setNext(PrevAttr);
PrevAttr = Attrs;
Attrs = NextAttr;
}
return PrevAttr;
}