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ModuleDependencyCacheSerialization.cpp
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//=== ModuleDependencyCacheSerialization.cpp - serialized format -*- C++ -*-==//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2021 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#include "swift/AST/FileSystem.h"
#include "swift/AST/ModuleDependencies.h"
#include "swift/Basic/Assertions.h"
#include "swift/Basic/PrettyStackTrace.h"
#include "swift/Basic/Version.h"
#include "swift/DependencyScan/SerializedModuleDependencyCacheFormat.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/VirtualOutputBackend.h"
#include <unordered_map>
using namespace swift;
using namespace dependencies;
using namespace module_dependency_cache_serialization;
namespace {
ModuleDependencyKind &operator++(ModuleDependencyKind &e) {
if (e == ModuleDependencyKind::LastKind) {
llvm_unreachable(
"Attempting to increment last enum value on ModuleDependencyKind");
}
e = ModuleDependencyKind(
static_cast<std::underlying_type<ModuleDependencyKind>::type>(e) + 1);
return e;
}
} // namespace
// MARK: Deserialization
namespace swift {
class ModuleDependenciesCacheDeserializer {
std::vector<std::string> Identifiers;
std::vector<std::vector<uint64_t>> ArraysOfIdentifierIDs;
std::vector<LinkLibrary> LinkLibraries;
std::vector<std::vector<uint64_t>> ArraysOfLinkLibraryIDs;
std::vector<std::pair<std::string, MacroPluginDependency>> MacroDependencies;
std::vector<std::vector<uint64_t>> ArraysOfMacroDependenciesIDs;
std::vector<ScannerImportStatementInfo> ImportStatements;
std::vector<std::vector<uint64_t>> ArraysOfImportStatementIDs;
std::vector<std::vector<uint64_t>> ArraysOfOptionalImportStatementIDs;
llvm::BitstreamCursor Cursor;
SmallVector<uint64_t, 64> Scratch;
StringRef BlobData;
// These return true if there was an error.
bool readSignature();
bool enterGraphBlock();
bool readMetadata(StringRef scannerContextHash);
bool readSerializationTime(llvm::sys::TimePoint<> &SerializationTimeStamp);
bool readGraph(ModuleDependenciesCache &cache);
std::optional<std::string> getIdentifier(unsigned n);
std::optional<std::vector<std::string>> getStringArray(unsigned n);
std::optional<std::vector<LinkLibrary>> getLinkLibraryArray(unsigned n);
std::optional<std::vector<std::pair<std::string, MacroPluginDependency>>>
getMacroDependenciesArray(unsigned n);
std::optional<std::vector<ScannerImportStatementInfo>>
getImportStatementInfoArray(unsigned n);
std::optional<std::vector<ScannerImportStatementInfo>>
getOptionalImportStatementInfoArray(unsigned n);
std::optional<std::vector<ModuleDependencyID>>
getModuleDependencyIDArray(unsigned n);
public:
ModuleDependenciesCacheDeserializer(llvm::MemoryBufferRef Data)
: Cursor(Data) {}
bool readInterModuleDependenciesCache(ModuleDependenciesCache &cache,
llvm::sys::TimePoint<> &serializedCacheTimeStamp);
};
} // namespace swift
/// Read in the expected signature: IMDC
bool ModuleDependenciesCacheDeserializer::readSignature() {
for (unsigned char byte : MODULE_DEPENDENCY_CACHE_FORMAT_SIGNATURE) {
if (Cursor.AtEndOfStream())
return true;
if (auto maybeRead = Cursor.Read(8)) {
if (maybeRead.get() != byte)
return true;
} else {
return true;
}
}
return false;
}
/// Read in the info block and enter the top-level block which represents the
/// graph
bool ModuleDependenciesCacheDeserializer::enterGraphBlock() {
// Read the BLOCKINFO_BLOCK, which contains metadata used when dumping
// the binary data with llvm-bcanalyzer.
{
auto next = Cursor.advance();
if (!next) {
consumeError(next.takeError());
return true;
}
if (next->Kind != llvm::BitstreamEntry::SubBlock)
return true;
if (next->ID != llvm::bitc::BLOCKINFO_BLOCK_ID)
return true;
if (!Cursor.ReadBlockInfoBlock())
return true;
}
// Enters our top-level subblock,
// which contains the actual module dependency information.
{
auto next = Cursor.advance();
if (!next) {
consumeError(next.takeError());
return true;
}
if (next->Kind != llvm::BitstreamEntry::SubBlock)
return true;
if (next->ID != GRAPH_BLOCK_ID)
return true;
if (auto err = Cursor.EnterSubBlock(GRAPH_BLOCK_ID)) {
consumeError(std::move(err));
return true;
}
}
return false;
}
/// Read in the serialized file's format version, error/exit if not matching
/// current version.
bool ModuleDependenciesCacheDeserializer::readMetadata(StringRef scannerContextHash) {
using namespace graph_block;
auto entry = Cursor.advance();
if (!entry) {
consumeError(entry.takeError());
return true;
}
if (entry->Kind != llvm::BitstreamEntry::Record)
return true;
auto recordID = Cursor.readRecord(entry->ID, Scratch, &BlobData);
if (!recordID) {
consumeError(recordID.takeError());
return true;
}
if (*recordID != METADATA)
return true;
unsigned majorVersion, minorVersion;
MetadataLayout::readRecord(Scratch, majorVersion, minorVersion);
if (majorVersion != MODULE_DEPENDENCY_CACHE_FORMAT_VERSION_MAJOR ||
minorVersion != MODULE_DEPENDENCY_CACHE_FORMAT_VERSION_MINOR)
return true;
std::string readScannerContextHash = BlobData.str();
if (readScannerContextHash != scannerContextHash)
return true;
return false;
}
bool ModuleDependenciesCacheDeserializer::readSerializationTime(llvm::sys::TimePoint<> &SerializationTimeStamp) {
using namespace graph_block;
auto entry = Cursor.advance();
if (!entry) {
consumeError(entry.takeError());
return true;
}
if (entry->Kind != llvm::BitstreamEntry::Record)
return true;
auto recordID = Cursor.readRecord(entry->ID, Scratch, &BlobData);
if (!recordID) {
consumeError(recordID.takeError());
return true;
}
if (*recordID != TIME_NODE)
return true;
TimeLayout::readRecord(Scratch);
std::string serializedTimeStamp = BlobData.str();
SerializationTimeStamp =
llvm::sys::TimePoint<>(llvm::sys::TimePoint<>::duration(std::stoll(serializedTimeStamp)));
return SerializationTimeStamp == llvm::sys::TimePoint<>();
}
/// Read in the top-level block's graph structure by first reading in
/// all of the file's identifiers and arrays of identifiers, followed by
/// consuming individual module info records and registering them into the
/// cache.
bool ModuleDependenciesCacheDeserializer::readGraph(
ModuleDependenciesCache &cache) {
using namespace graph_block;
bool hasCurrentModule = false;
std::string currentModuleName;
std::vector<ScannerImportStatementInfo> currentModuleImports;
std::vector<ScannerImportStatementInfo> currentOptionalModuleImports;
std::vector<ModuleDependencyID> importedSwiftDependenciesIDs;
std::vector<ModuleDependencyID> importedClangDependenciesIDs;
std::vector<ModuleDependencyID> crossImportOverlayDependenciesIDs;
std::vector<ModuleDependencyID> swiftOverlayDependenciesIDs;
std::vector<LinkLibrary> linkLibraries;
std::vector<std::pair<std::string, MacroPluginDependency>> macroDependencies;
std::vector<ScannerImportStatementInfo> importStatements;
std::vector<ScannerImportStatementInfo> optionalImportStatements;
std::vector<std::string> auxiliaryFiles;
auto addCommonDependencyInfo =
[¤tModuleImports, ¤tOptionalModuleImports,
&importedClangDependenciesIDs, &auxiliaryFiles,
¯oDependencies](ModuleDependencyInfo &moduleDep) {
// Add imports of this module
for (const auto &moduleName : currentModuleImports)
moduleDep.addModuleImport(moduleName.importIdentifier,
moduleName.isExported);
// Add optional imports of this module
for (const auto &moduleName : currentOptionalModuleImports)
moduleDep.addOptionalModuleImport(moduleName.importIdentifier,
moduleName.isExported);
// Add qualified dependencies of this module
moduleDep.setImportedClangDependencies(importedClangDependenciesIDs);
// Add any auxiliary files
moduleDep.setAuxiliaryFiles(auxiliaryFiles);
// Add macro dependencies
for (const auto &md : macroDependencies)
moduleDep.addMacroDependency(md.first, md.second.LibraryPath,
md.second.ExecutablePath);
moduleDep.setIsFinalized(true);
};
auto addSwiftCommonDependencyInfo =
[&importedSwiftDependenciesIDs, &crossImportOverlayDependenciesIDs,
&swiftOverlayDependenciesIDs](ModuleDependencyInfo &moduleDep) {
moduleDep.setImportedSwiftDependencies(importedSwiftDependenciesIDs);
moduleDep.setCrossImportOverlayDependencies(
crossImportOverlayDependenciesIDs);
moduleDep.setSwiftOverlayDependencies(swiftOverlayDependenciesIDs);
};
auto addSwiftTextualDependencyInfo =
[this](ModuleDependencyInfo &moduleDep, unsigned bridgingHeaderFileID,
unsigned bridgingSourceFilesArrayID,
unsigned bridgingModuleDependenciesArrayID,
unsigned bridgingHeaderIncludeTreeID) {
// Add bridging header file path
if (bridgingHeaderFileID != 0) {
auto bridgingHeaderFile = getIdentifier(bridgingHeaderFileID);
if (!bridgingHeaderFile)
llvm::report_fatal_error("Bad bridging header path");
moduleDep.addBridgingHeader(*bridgingHeaderFile);
}
// Add bridging source files
auto bridgingSourceFiles = getStringArray(bridgingSourceFilesArrayID);
if (!bridgingSourceFiles)
llvm::report_fatal_error("Bad bridging source files");
moduleDep.setHeaderSourceFiles(*bridgingSourceFiles);
// Add bridging module dependencies
auto bridgingModuleDeps =
getStringArray(bridgingModuleDependenciesArrayID);
if (!bridgingModuleDeps)
llvm::report_fatal_error("Bad bridging module dependencies");
llvm::StringSet<> alreadyAdded;
std::vector<ModuleDependencyID> bridgingModuleDepIDs;
for (const auto &mod : bridgingModuleDeps.value())
bridgingModuleDepIDs.push_back(
ModuleDependencyID{mod, ModuleDependencyKind::Clang});
moduleDep.setHeaderClangDependencies(bridgingModuleDepIDs);
// Add bridging header include tree
auto bridgingHeaderIncludeTree =
getIdentifier(bridgingHeaderIncludeTreeID);
if (!bridgingHeaderIncludeTree)
llvm::report_fatal_error("Bad bridging header include tree");
if (!bridgingHeaderIncludeTree->empty())
moduleDep.addBridgingHeaderIncludeTree(*bridgingHeaderIncludeTree);
};
while (!Cursor.AtEndOfStream()) {
auto entry = cantFail(Cursor.advance(), "Advance bitstream cursor");
if (entry.Kind == llvm::BitstreamEntry::EndBlock) {
Cursor.ReadBlockEnd();
assert(Cursor.GetCurrentBitNo() % CHAR_BIT == 0);
break;
}
if (entry.Kind != llvm::BitstreamEntry::Record)
llvm::report_fatal_error("Bad bitstream entry kind");
Scratch.clear();
unsigned recordID =
cantFail(Cursor.readRecord(entry.ID, Scratch, &BlobData),
"Read bitstream record");
switch (recordID) {
case METADATA: {
// METADATA must appear at the beginning and is read by readMetadata().
llvm::report_fatal_error("Unexpected METADATA record");
break;
}
case IDENTIFIER_NODE: {
// IDENTIFIER_NODE must come before MODULE_NODEs.
if (hasCurrentModule)
llvm::report_fatal_error("Unexpected IDENTIFIER_NODE record");
IdentifierNodeLayout::readRecord(Scratch);
Identifiers.push_back(BlobData.str());
break;
}
case IDENTIFIER_ARRAY_NODE: {
// IDENTIFIER_ARRAY_NODE must come before MODULE_NODEs.
if (hasCurrentModule)
llvm::report_fatal_error("Unexpected IDENTIFIER_NODE record");
ArrayRef<uint64_t> identifierIDs;
IdentifierArrayLayout::readRecord(Scratch, identifierIDs);
ArraysOfIdentifierIDs.push_back(identifierIDs.vec());
break;
}
case LINK_LIBRARY_NODE: {
unsigned libraryIdentifierID;
bool isFramework, isStatic, shouldForceLoad;
LinkLibraryLayout::readRecord(Scratch, libraryIdentifierID, isFramework,
isStatic, shouldForceLoad);
auto libraryIdentifier = getIdentifier(libraryIdentifierID);
if (!libraryIdentifier)
llvm::report_fatal_error("Bad link library identifier");
LinkLibraries.emplace_back(
libraryIdentifier.value(),
isFramework ? LibraryKind::Framework
: LibraryKind::Library,
isStatic, shouldForceLoad);
break;
}
case LINK_LIBRARY_ARRAY_NODE: {
ArrayRef<uint64_t> identifierIDs;
LinkLibraryArrayLayout::readRecord(Scratch, identifierIDs);
ArraysOfLinkLibraryIDs.push_back(identifierIDs.vec());
break;
}
case MACRO_DEPENDENCY_NODE: {
unsigned macroModuleNameID, libraryPathID, executablePathID;
MacroDependencyLayout::readRecord(Scratch, macroModuleNameID,
libraryPathID, executablePathID);
auto macroModuleName = getIdentifier(macroModuleNameID);
if (!macroModuleName)
llvm::report_fatal_error("Bad macro dependency: no module name");
auto libraryPath = getIdentifier(libraryPathID);
if (!libraryPath)
llvm::report_fatal_error("Bad macro dependency: no library path");
auto executablePath = getIdentifier(executablePathID);
if (!executablePath)
llvm::report_fatal_error("Bad macro dependency: no executable path");
MacroDependencies.push_back(
{macroModuleName.value(),
MacroPluginDependency{libraryPath.value(), executablePath.value()}});
break;
}
case MACRO_DEPENDENCY_ARRAY_NODE: {
ArrayRef<uint64_t> identifierIDs;
MacroDependencyArrayLayout::readRecord(Scratch, identifierIDs);
ArraysOfMacroDependenciesIDs.push_back(identifierIDs.vec());
break;
}
case IMPORT_STATEMENT_NODE: {
unsigned importIdentifierID, bufferIdentifierID;
unsigned lineNumber, columnNumber;
bool isOptional, isExported;
ImportStatementLayout::readRecord(Scratch, importIdentifierID,
bufferIdentifierID, lineNumber,
columnNumber, isOptional, isExported);
auto importIdentifier = getIdentifier(importIdentifierID);
if (!importIdentifier)
llvm::report_fatal_error("Bad import statement info: no import name");
auto bufferIdentifier = getIdentifier(bufferIdentifierID);
if (!bufferIdentifier)
llvm::report_fatal_error(
"Bad import statement info: no buffer identifier");
ImportStatements.push_back(ScannerImportStatementInfo(
importIdentifier.value(), isExported,
ScannerImportStatementInfo::ImportDiagnosticLocationInfo(
bufferIdentifier.value(), lineNumber, columnNumber)));
break;
}
case IMPORT_STATEMENT_ARRAY_NODE: {
ArrayRef<uint64_t> identifierIDs;
ImportStatementArrayLayout::readRecord(Scratch, identifierIDs);
ArraysOfImportStatementIDs.push_back(identifierIDs.vec());
break;
}
case OPTIONAL_IMPORT_STATEMENT_ARRAY_NODE: {
ArrayRef<uint64_t> identifierIDs;
OptionalImportStatementArrayLayout::readRecord(Scratch, identifierIDs);
ArraysOfOptionalImportStatementIDs.push_back(identifierIDs.vec());
break;
}
case MODULE_NODE: {
hasCurrentModule = true;
unsigned moduleNameID, moduleImportsArrayID, optionalImportsArrayID,
linkLibraryArrayID, macroDependencyArrayID,
importedSwiftDependenciesIDsArrayID,
importedClangDependenciesIDsArrayID,
crossImportOverlayDependenciesIDsArrayID,
swiftOverlayDependenciesIDsArrayID, moduleCacheKeyID,
AuxiliaryFilesArrayID;
ModuleInfoLayout::readRecord(Scratch, moduleNameID, moduleImportsArrayID,
optionalImportsArrayID, linkLibraryArrayID,
macroDependencyArrayID,
importedSwiftDependenciesIDsArrayID,
importedClangDependenciesIDsArrayID,
crossImportOverlayDependenciesIDsArrayID,
swiftOverlayDependenciesIDsArrayID,
moduleCacheKeyID, AuxiliaryFilesArrayID);
auto moduleName = getIdentifier(moduleNameID);
if (!moduleName)
llvm::report_fatal_error("Bad module name");
currentModuleName = *moduleName;
auto optionalImportStatementInfos =
getImportStatementInfoArray(moduleImportsArrayID);
if (!optionalImportStatementInfos)
llvm::report_fatal_error("Bad direct Swift dependencies: no imports");
importStatements = optionalImportStatementInfos.value();
auto optionalOptionalImportStatementInfos =
getOptionalImportStatementInfoArray(optionalImportsArrayID);
if (!optionalOptionalImportStatementInfos)
llvm::report_fatal_error(
"Bad direct Swift dependencies: no optional imports");
optionalImportStatements = optionalOptionalImportStatementInfos.value();
auto optionalAuxiliaryFiles = getStringArray(AuxiliaryFilesArrayID);
if (optionalAuxiliaryFiles.has_value())
for (const auto &af : optionalAuxiliaryFiles.value())
auxiliaryFiles.push_back(af);
auto optionalImportedSwiftDependenciesIDs =
getModuleDependencyIDArray(importedSwiftDependenciesIDsArrayID);
if (!optionalImportedSwiftDependenciesIDs)
llvm::report_fatal_error(
"Bad direct Swift dependencies: no qualified dependencies");
importedSwiftDependenciesIDs =
optionalImportedSwiftDependenciesIDs.value();
auto optionalImportedClangDependenciesIDs =
getModuleDependencyIDArray(importedClangDependenciesIDsArrayID);
if (!optionalImportedClangDependenciesIDs)
llvm::report_fatal_error(
"Bad direct Clang dependencies: no qualified dependencies");
importedClangDependenciesIDs =
optionalImportedClangDependenciesIDs.value();
auto optionalCrossImportOverlayDependenciesIDs =
getModuleDependencyIDArray(crossImportOverlayDependenciesIDsArrayID);
if (!optionalCrossImportOverlayDependenciesIDs)
llvm::report_fatal_error(
"Bad Cross-Import Overlay dependencies: no qualified dependencies");
crossImportOverlayDependenciesIDs =
optionalCrossImportOverlayDependenciesIDs.value();
auto optionalSwiftOverlayDependenciesIDs =
getModuleDependencyIDArray(swiftOverlayDependenciesIDsArrayID);
if (!optionalSwiftOverlayDependenciesIDs)
llvm::report_fatal_error(
"Bad Swift Overlay dependencies: no qualified dependencies");
swiftOverlayDependenciesIDs = optionalSwiftOverlayDependenciesIDs.value();
auto optionalLinkLibraries = getLinkLibraryArray(linkLibraryArrayID);
if (!optionalLinkLibraries)
llvm::report_fatal_error("Bad Link Libraries info");
linkLibraries = *optionalLinkLibraries;
auto optionalMacroDependencies =
getMacroDependenciesArray(macroDependencyArrayID);
if (!optionalMacroDependencies)
llvm::report_fatal_error("Bad Macro Dependencies info");
macroDependencies = *optionalMacroDependencies;
break;
}
case SWIFT_INTERFACE_MODULE_DETAILS_NODE: {
if (!hasCurrentModule)
llvm::report_fatal_error(
"Unexpected SWIFT_TEXTUAL_MODULE_DETAILS_NODE record");
unsigned outputPathFileID, interfaceFileID,
compiledModuleCandidatesArrayID, buildCommandLineArrayID,
contextHashID, isFramework, isStatic,
bridgingHeaderFileID, sourceFilesArrayID, bridgingSourceFilesArrayID,
bridgingModuleDependenciesArrayID, CASFileSystemRootID,
bridgingHeaderIncludeTreeID, moduleCacheKeyID, userModuleVersionID;
SwiftInterfaceModuleDetailsLayout::readRecord(
Scratch, outputPathFileID, interfaceFileID,
compiledModuleCandidatesArrayID, buildCommandLineArrayID,
contextHashID, isFramework, isStatic,
bridgingHeaderFileID, sourceFilesArrayID, bridgingSourceFilesArrayID,
bridgingModuleDependenciesArrayID, CASFileSystemRootID,
bridgingHeaderIncludeTreeID, moduleCacheKeyID, userModuleVersionID);
auto outputModulePath = getIdentifier(outputPathFileID);
if (!outputModulePath)
llvm::report_fatal_error("Bad .swiftmodule output path");
std::optional<std::string> optionalSwiftInterfaceFile;
if (interfaceFileID != 0) {
auto swiftInterfaceFile = getIdentifier(interfaceFileID);
if (!swiftInterfaceFile)
llvm::report_fatal_error("Bad swift interface file path");
optionalSwiftInterfaceFile = *swiftInterfaceFile;
}
auto compiledModuleCandidates =
getStringArray(compiledModuleCandidatesArrayID);
if (!compiledModuleCandidates)
llvm::report_fatal_error("Bad compiled module candidates");
auto commandLine = getStringArray(buildCommandLineArrayID);
if (!commandLine)
llvm::report_fatal_error("Bad command line");
auto contextHash = getIdentifier(contextHashID);
if (!contextHash)
llvm::report_fatal_error("Bad context hash");
// forSwiftInterface API demands references here.
std::vector<StringRef> buildCommandRefs;
for (auto &arg : *commandLine)
buildCommandRefs.push_back(arg);
std::vector<StringRef> compiledCandidatesRefs;
for (auto &cc : compiledCandidatesRefs)
compiledCandidatesRefs.push_back(cc);
auto rootFileSystemID = getIdentifier(CASFileSystemRootID);
if (!rootFileSystemID)
llvm::report_fatal_error("Bad CASFileSystem RootID");
auto moduleCacheKey = getIdentifier(moduleCacheKeyID);
if (!moduleCacheKey)
llvm::report_fatal_error("Bad moduleCacheKey");
auto userModuleVersion = getIdentifier(userModuleVersionID);
if (!userModuleVersion)
llvm::report_fatal_error("Bad userModuleVersion");
// Form the dependencies storage object
auto moduleDep = ModuleDependencyInfo::forSwiftInterfaceModule(
optionalSwiftInterfaceFile.value(), compiledCandidatesRefs,
buildCommandRefs, importStatements, optionalImportStatements,
linkLibraries, isFramework, isStatic, *rootFileSystemID,
*moduleCacheKey, *userModuleVersion);
moduleDep.setOutputPathAndHash(*outputModulePath, *contextHash);
addCommonDependencyInfo(moduleDep);
addSwiftCommonDependencyInfo(moduleDep);
addSwiftTextualDependencyInfo(
moduleDep, bridgingHeaderFileID, bridgingSourceFilesArrayID,
bridgingModuleDependenciesArrayID, bridgingHeaderIncludeTreeID);
cache.recordDependency(currentModuleName, std::move(moduleDep));
hasCurrentModule = false;
break;
}
case SWIFT_SOURCE_MODULE_DETAILS_NODE: {
if (!hasCurrentModule)
llvm::report_fatal_error(
"Unexpected SWIFT_SOURCE_MODULE_DETAILS_NODE record");
unsigned bridgingHeaderFileID, sourceFilesArrayID,
bridgingSourceFilesArrayID, bridgingModuleDependenciesArrayID,
CASFileSystemRootID, bridgingHeaderIncludeTreeID,
buildCommandLineArrayID, bridgingHeaderBuildCommandLineArrayID,
chainedBridgingHeaderPathID, chainedBridgingHeaderContentID;
SwiftSourceModuleDetailsLayout::readRecord(
Scratch, bridgingHeaderFileID,
sourceFilesArrayID, bridgingSourceFilesArrayID,
bridgingModuleDependenciesArrayID, CASFileSystemRootID,
bridgingHeaderIncludeTreeID, buildCommandLineArrayID,
bridgingHeaderBuildCommandLineArrayID, chainedBridgingHeaderPathID,
chainedBridgingHeaderContentID);
auto rootFileSystemID = getIdentifier(CASFileSystemRootID);
if (!rootFileSystemID)
llvm::report_fatal_error("Bad CASFileSystem RootID");
auto commandLine = getStringArray(buildCommandLineArrayID);
if (!commandLine)
llvm::report_fatal_error("Bad command line");
std::vector<StringRef> buildCommandRefs;
for (auto &arg : *commandLine)
buildCommandRefs.push_back(arg);
std::vector<StringRef> bridgingHeaderBuildCommandRefs;
auto bridgingHeaderCommandLine =
getStringArray(bridgingHeaderBuildCommandLineArrayID);
if (!bridgingHeaderCommandLine)
llvm::report_fatal_error("Bad bridging header command line");
for (auto &arg : *bridgingHeaderCommandLine)
bridgingHeaderBuildCommandRefs.push_back(arg);
// Form the dependencies storage object
auto moduleDep = ModuleDependencyInfo::forSwiftSourceModule(
*rootFileSystemID, buildCommandRefs, importStatements,
optionalImportStatements, bridgingHeaderBuildCommandRefs);
// Add source files
auto sourceFiles = getStringArray(sourceFilesArrayID);
if (!sourceFiles)
llvm::report_fatal_error("Bad bridging source files");
for (const auto &file : *sourceFiles)
moduleDep.addSourceFile(file);
// Add chained bridging header.
auto chainedBridgingHeaderPath =
getIdentifier(chainedBridgingHeaderPathID);
auto chainedBridgingHeaderContent =
getIdentifier(chainedBridgingHeaderContentID);
if (chainedBridgingHeaderPath && chainedBridgingHeaderContent)
moduleDep.setChainedBridgingHeaderBuffer(*chainedBridgingHeaderPath,
*chainedBridgingHeaderContent);
addCommonDependencyInfo(moduleDep);
addSwiftCommonDependencyInfo(moduleDep);
addSwiftTextualDependencyInfo(
moduleDep, bridgingHeaderFileID, bridgingSourceFilesArrayID,
bridgingModuleDependenciesArrayID, bridgingHeaderIncludeTreeID);
cache.recordDependency(currentModuleName, std::move(moduleDep));
hasCurrentModule = false;
break;
}
case SWIFT_BINARY_MODULE_DETAILS_NODE: {
if (!hasCurrentModule)
llvm::report_fatal_error(
"Unexpected SWIFT_BINARY_MODULE_DETAILS_NODE record");
unsigned compiledModulePathID, moduleDocPathID, moduleSourceInfoPathID,
headerImportID, definingInterfacePathID,
headerModuleDependenciesArrayID, headerImportsSourceFilesArrayID,
isFramework, isStatic, moduleCacheKeyID, userModuleVersionID;
SwiftBinaryModuleDetailsLayout::readRecord(
Scratch, compiledModulePathID, moduleDocPathID,
moduleSourceInfoPathID, headerImportID, definingInterfacePathID,
headerModuleDependenciesArrayID, headerImportsSourceFilesArrayID,
isFramework, isStatic, moduleCacheKeyID, userModuleVersionID);
auto compiledModulePath = getIdentifier(compiledModulePathID);
if (!compiledModulePath)
llvm::report_fatal_error("Bad compiled module path");
auto moduleDocPath = getIdentifier(moduleDocPathID);
if (!moduleDocPath)
llvm::report_fatal_error("Bad module doc path");
auto moduleSourceInfoPath = getIdentifier(moduleSourceInfoPathID);
if (!moduleSourceInfoPath)
llvm::report_fatal_error("Bad module source info path");
auto moduleCacheKey = getIdentifier(moduleCacheKeyID);
if (!moduleCacheKey)
llvm::report_fatal_error("Bad moduleCacheKey");
auto userModuleVersion = getIdentifier(userModuleVersionID);
if (!userModuleVersion)
llvm::report_fatal_error("Bad userModuleVersion");
auto headerImport = getIdentifier(headerImportID);
if (!headerImport)
llvm::report_fatal_error(
"Bad binary direct dependencies: no header import");
auto definingInterfacePath = getIdentifier(definingInterfacePathID);
if (!definingInterfacePath)
llvm::report_fatal_error(
"Bad binary direct dependencies: no defining interface path");
// Form the dependencies storage object
auto moduleDep = ModuleDependencyInfo::forSwiftBinaryModule(
*compiledModulePath, *moduleDocPath, *moduleSourceInfoPath,
currentModuleImports, currentOptionalModuleImports, linkLibraries,
*headerImport, *definingInterfacePath, isFramework, isStatic,
*moduleCacheKey, *userModuleVersion);
addCommonDependencyInfo(moduleDep);
addSwiftCommonDependencyInfo(moduleDep);
auto headerModuleDependencies =
getStringArray(headerModuleDependenciesArrayID);
if (!headerModuleDependencies)
llvm::report_fatal_error("Bad binary direct dependencies: no header "
"import module dependencies");
llvm::StringSet<> alreadyAdded;
std::vector<ModuleDependencyID> clangHeaderDependencyIDs;
for (const auto &headerDepName : *headerModuleDependencies)
clangHeaderDependencyIDs.push_back(
ModuleDependencyID{headerDepName, ModuleDependencyKind::Clang});
moduleDep.setHeaderClangDependencies(clangHeaderDependencyIDs);
auto headerImportsSourceFiles =
getStringArray(headerImportsSourceFilesArrayID);
if (!headerImportsSourceFiles)
llvm::report_fatal_error(
"Bad binary direct dependencies: no header import source files");
moduleDep.setHeaderSourceFiles(*headerImportsSourceFiles);
cache.recordDependency(currentModuleName, std::move(moduleDep));
hasCurrentModule = false;
break;
}
case SWIFT_PLACEHOLDER_MODULE_DETAILS_NODE: {
if (!hasCurrentModule)
llvm::report_fatal_error(
"Unexpected SWIFT_PLACEHOLDER_MODULE_DETAILS_NODE record");
unsigned compiledModulePathID, moduleDocPathID, moduleSourceInfoPathID;
SwiftPlaceholderModuleDetailsLayout::readRecord(
Scratch, compiledModulePathID, moduleDocPathID,
moduleSourceInfoPathID);
auto compiledModulePath = getIdentifier(compiledModulePathID);
if (!compiledModulePath)
llvm::report_fatal_error("Bad compiled module path");
auto moduleDocPath = getIdentifier(moduleDocPathID);
if (!moduleDocPath)
llvm::report_fatal_error("Bad module doc path");
auto moduleSourceInfoPath = getIdentifier(moduleSourceInfoPathID);
if (!moduleSourceInfoPath)
llvm::report_fatal_error("Bad module source info path");
// Form the dependencies storage object
auto moduleDep = ModuleDependencyInfo::forPlaceholderSwiftModuleStub(
*compiledModulePath, *moduleDocPath, *moduleSourceInfoPath);
cache.recordDependency(currentModuleName, std::move(moduleDep));
hasCurrentModule = false;
break;
}
case CLANG_MODULE_DETAILS_NODE: {
if (!hasCurrentModule)
llvm::report_fatal_error("Unexpected CLANG_MODULE_DETAILS_NODE record");
unsigned pcmOutputPathID, mappedPCMPathID, moduleMapPathID, contextHashID,
commandLineArrayID, fileDependenciesArrayID,
CASFileSystemRootID, clangIncludeTreeRootID, moduleCacheKeyID,
isSystem;
ClangModuleDetailsLayout::readRecord(
Scratch, pcmOutputPathID, mappedPCMPathID, moduleMapPathID,
contextHashID, commandLineArrayID, fileDependenciesArrayID,
CASFileSystemRootID, clangIncludeTreeRootID,
moduleCacheKeyID, isSystem);
auto pcmOutputPath = getIdentifier(pcmOutputPathID);
if (!pcmOutputPath)
llvm::report_fatal_error("Bad pcm output path");
auto mappedPCMPath = getIdentifier(mappedPCMPathID);
if (!mappedPCMPath)
llvm::report_fatal_error("Bad mapped pcm path");
auto moduleMapPath = getIdentifier(moduleMapPathID);
if (!moduleMapPath)
llvm::report_fatal_error("Bad module map path");
auto contextHash = getIdentifier(contextHashID);
if (!contextHash)
llvm::report_fatal_error("Bad context hash");
auto commandLineArgs = getStringArray(commandLineArrayID);
if (!commandLineArgs)
llvm::report_fatal_error("Bad command line");
auto fileDependencies = getStringArray(fileDependenciesArrayID);
if (!fileDependencies)
llvm::report_fatal_error("Bad file dependencies");
auto rootFileSystemID = getIdentifier(CASFileSystemRootID);
if (!rootFileSystemID)
llvm::report_fatal_error("Bad CASFileSystem RootID");
auto clangIncludeTreeRoot = getIdentifier(clangIncludeTreeRootID);
if (!clangIncludeTreeRoot)
llvm::report_fatal_error("Bad clang include tree ID");
auto moduleCacheKey = getIdentifier(moduleCacheKeyID);
if (!moduleCacheKey)
llvm::report_fatal_error("Bad moduleCacheKey");
// Form the dependencies storage object
auto moduleDep = ModuleDependencyInfo::forClangModule(
*pcmOutputPath, *mappedPCMPath, *moduleMapPath, *contextHash,
*commandLineArgs, *fileDependencies, linkLibraries,
*rootFileSystemID, *clangIncludeTreeRoot, *moduleCacheKey, isSystem);
addCommonDependencyInfo(moduleDep);
cache.recordDependency(currentModuleName, std::move(moduleDep));
hasCurrentModule = false;
break;
}
default: {
llvm::report_fatal_error("Unknown record ID");
}
}
}
return false;
}
bool ModuleDependenciesCacheDeserializer::readInterModuleDependenciesCache(
ModuleDependenciesCache &cache,
llvm::sys::TimePoint<> &serializedCacheTimeStamp) {
using namespace graph_block;
if (readSignature())
return true;
if (enterGraphBlock())
return true;
if (readMetadata(cache.scannerContextHash))
return true;
if (readSerializationTime(serializedCacheTimeStamp))
return true;
if (readGraph(cache))
return true;
return false;
}
std::optional<std::string>
ModuleDependenciesCacheDeserializer::getIdentifier(unsigned n) {
if (n == 0)
return std::string();
--n;
if (n >= Identifiers.size())
return std::nullopt;
return Identifiers[n];
}
std::optional<std::vector<std::string>>
ModuleDependenciesCacheDeserializer::getStringArray(unsigned n) {
if (n == 0)
return std::vector<std::string>();
--n;
if (n >= ArraysOfIdentifierIDs.size())
return std::nullopt;
auto &identifierIDs = ArraysOfIdentifierIDs[n];
auto IDtoStringMap = [this](unsigned id) {
auto identifier = getIdentifier(id);
if (!identifier)
llvm::report_fatal_error("Bad identifier array element");
return *identifier;
};
std::vector<std::string> result;
result.reserve(identifierIDs.size());
std::transform(identifierIDs.begin(), identifierIDs.end(),
std::back_inserter(result), IDtoStringMap);
return result;
}
std::optional<std::vector<LinkLibrary>>
ModuleDependenciesCacheDeserializer::getLinkLibraryArray(unsigned n) {
if (n == 0)
return std::vector<LinkLibrary>();
--n;
if (n >= ArraysOfLinkLibraryIDs.size())
return std::nullopt;
auto &llIDs = ArraysOfLinkLibraryIDs[n];
auto IDtoLLMap = [this](unsigned index) { return LinkLibraries[index]; };
std::vector<LinkLibrary> result;
result.reserve(llIDs.size());
std::transform(llIDs.begin(), llIDs.end(), std::back_inserter(result),
IDtoLLMap);
return result;
}
std::optional<std::vector<std::pair<std::string, MacroPluginDependency>>>
ModuleDependenciesCacheDeserializer::getMacroDependenciesArray(unsigned n) {
if (n == 0)
return std::vector<std::pair<std::string, MacroPluginDependency>>();
--n;
if (n >= ArraysOfMacroDependenciesIDs.size())
return std::nullopt;
auto &llIDs = ArraysOfMacroDependenciesIDs[n];
auto IDtoLLMap = [this](unsigned index) { return MacroDependencies[index]; };
std::vector<std::pair<std::string, MacroPluginDependency>> result;
result.reserve(llIDs.size());
std::transform(llIDs.begin(), llIDs.end(), std::back_inserter(result),
IDtoLLMap);
return result;
}
std::optional<std::vector<ScannerImportStatementInfo>>
ModuleDependenciesCacheDeserializer::getImportStatementInfoArray(unsigned n) {
if (n == 0)
return std::vector<ScannerImportStatementInfo>();
--n;
if (n >= ArraysOfImportStatementIDs.size())
return std::nullopt;
auto &ISIDs = ArraysOfImportStatementIDs[n];
llvm::StringMap<ScannerImportStatementInfo> addedImports;
for (const auto &importID : ISIDs) {
const auto &entry = ImportStatements[importID];
if (addedImports.contains(entry.importIdentifier)) {
auto entryIt = addedImports.find(entry.importIdentifier);
for (const auto &importLoc : entry.importLocations)
entryIt->second.addImportLocation(importLoc);
} else
addedImports.insert({entry.importIdentifier, entry});
}
std::vector<ScannerImportStatementInfo> result;
result.reserve(addedImports.size());
for (const auto &keyValPair : addedImports) {
result.push_back(keyValPair.second);
}
return result;
}
std::optional<std::vector<ScannerImportStatementInfo>>
ModuleDependenciesCacheDeserializer::getOptionalImportStatementInfoArray(
unsigned n) {
if (n == 0)
return std::vector<ScannerImportStatementInfo>();
--n;
if (n >= ArraysOfOptionalImportStatementIDs.size())
return std::nullopt;
auto &ISIDs = ArraysOfOptionalImportStatementIDs[n];
auto IDtoISMap = [this](unsigned index) { return ImportStatements[index]; };
std::vector<ScannerImportStatementInfo> result;
result.reserve(ISIDs.size());
std::transform(ISIDs.begin(), ISIDs.end(), std::back_inserter(result),
IDtoISMap);
return result;
}
std::optional<std::vector<ModuleDependencyID>>
ModuleDependenciesCacheDeserializer::getModuleDependencyIDArray(unsigned n) {
auto encodedIdentifierStringArray = getStringArray(n);
if (encodedIdentifierStringArray.has_value()) {
static const std::string textualPrefix("swiftTextual");
static const std::string binaryPrefix("swiftBinary");
static const std::string placeholderPrefix("swiftPlaceholder");
static const std::string clangPrefix("clang");
std::vector<ModuleDependencyID> result;
for (const auto &encodedIdentifierString : *encodedIdentifierStringArray) {
ModuleDependencyID id;
if (!encodedIdentifierString.compare(0, textualPrefix.size(),
textualPrefix)) {
auto moduleName =
encodedIdentifierString.substr(textualPrefix.size() + 1);
id = {moduleName, ModuleDependencyKind::SwiftInterface};
} else if (!encodedIdentifierString.compare(0, binaryPrefix.size(),