#include "clang/Lex/HeaderSearch.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/IdentifierTable.h"
#include "clang/Lex/HeaderMap.h"
#include "clang/Lex/HeaderSearchOptions.h"
#include "clang/Lex/LexDiagnostic.h"
#include "clang/Lex/Lexer.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/Capacity.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
#include <cstdio>
#if defined(LLVM_ON_UNIX)
#include <limits.h>
#endif
using namespace clang;
const IdentifierInfo *
HeaderFileInfo::getControllingMacro(ExternalIdentifierLookup *External) {
if (ControllingMacro)
return ControllingMacro;
if (!ControllingMacroID || !External)
return 0;
ControllingMacro = External->GetIdentifier(ControllingMacroID);
return ControllingMacro;
}
ExternalHeaderFileInfoSource::~ExternalHeaderFileInfoSource() {}
HeaderSearch::HeaderSearch(IntrusiveRefCntPtr<HeaderSearchOptions> HSOpts,
SourceManager &SourceMgr, DiagnosticsEngine &Diags,
const LangOptions &LangOpts,
const TargetInfo *Target)
: HSOpts(HSOpts), Diags(Diags), FileMgr(SourceMgr.getFileManager()),
FrameworkMap(64), ModMap(SourceMgr, Diags, LangOpts, Target, *this) {
AngledDirIdx = 0;
SystemDirIdx = 0;
NoCurDirSearch = false;
ExternalLookup = 0;
ExternalSource = 0;
NumIncluded = 0;
NumMultiIncludeFileOptzn = 0;
NumFrameworkLookups = NumSubFrameworkLookups = 0;
EnabledModules = LangOpts.Modules;
}
HeaderSearch::~HeaderSearch() {
for (unsigned i = 0, e = HeaderMaps.size(); i != e; ++i)
delete HeaderMaps[i].second;
}
void HeaderSearch::PrintStats() {
fprintf(stderr, "\n*** HeaderSearch Stats:\n");
fprintf(stderr, "%d files tracked.\n", (int)FileInfo.size());
unsigned NumOnceOnlyFiles = 0, MaxNumIncludes = 0, NumSingleIncludedFiles = 0;
for (unsigned i = 0, e = FileInfo.size(); i != e; ++i) {
NumOnceOnlyFiles += FileInfo[i].isImport;
if (MaxNumIncludes < FileInfo[i].NumIncludes)
MaxNumIncludes = FileInfo[i].NumIncludes;
NumSingleIncludedFiles += FileInfo[i].NumIncludes == 1;
}
fprintf(stderr, " %d #import/#pragma once files.\n", NumOnceOnlyFiles);
fprintf(stderr, " %d included exactly once.\n", NumSingleIncludedFiles);
fprintf(stderr, " %d max times a file is included.\n", MaxNumIncludes);
fprintf(stderr, " %d #include/#include_next/#import.\n", NumIncluded);
fprintf(stderr, " %d #includes skipped due to"
" the multi-include optimization.\n", NumMultiIncludeFileOptzn);
fprintf(stderr, "%d framework lookups.\n", NumFrameworkLookups);
fprintf(stderr, "%d subframework lookups.\n", NumSubFrameworkLookups);
}
const HeaderMap *HeaderSearch::CreateHeaderMap(const FileEntry *FE) {
if (!HeaderMaps.empty()) {
for (unsigned i = 0, e = HeaderMaps.size(); i != e; ++i)
if (HeaderMaps[i].first == FE)
return HeaderMaps[i].second;
}
if (const HeaderMap *HM = HeaderMap::Create(FE, FileMgr)) {
HeaderMaps.push_back(std::make_pair(FE, HM));
return HM;
}
return 0;
}
std::string HeaderSearch::getModuleFileName(Module *Module) {
return getModuleFileName(Module->Name, Module->ModuleMap->getName());
}
std::string HeaderSearch::getModuleFileName(StringRef ModuleName,
StringRef ModuleMapPath) {
if (ModuleCachePath.empty())
return std::string();
SmallString<256> Result(ModuleCachePath);
llvm::sys::fs::make_absolute(Result);
if (HSOpts->DisableModuleHash) {
llvm::sys::path::append(Result, ModuleName + ".pcm");
} else {
SmallString<256> AbsModuleMapPath(ModuleMapPath);
llvm::sys::fs::make_absolute(AbsModuleMapPath);
llvm::APInt Code(64, llvm::hash_value(AbsModuleMapPath.str().lower()));
SmallString<128> HashStr;
Code.toStringUnsigned(HashStr, 36);
llvm::sys::path::append(Result, ModuleName + "-" + HashStr.str() + ".pcm");
}
return Result.str().str();
}
Module *HeaderSearch::lookupModule(StringRef ModuleName, bool AllowSearch) {
Module *Module = ModMap.findModule(ModuleName);
if (Module || !AllowSearch)
return Module;
for (unsigned Idx = 0, N = SearchDirs.size(); Idx != N; ++Idx) {
if (SearchDirs[Idx].isFramework()) {
SmallString<128> FrameworkDirName;
FrameworkDirName += SearchDirs[Idx].getFrameworkDir()->getName();
llvm::sys::path::append(FrameworkDirName, ModuleName + ".framework");
if (const DirectoryEntry *FrameworkDir
= FileMgr.getDirectory(FrameworkDirName)) {
bool IsSystem
= SearchDirs[Idx].getDirCharacteristic() != SrcMgr::C_User;
Module = loadFrameworkModule(ModuleName, FrameworkDir, IsSystem);
if (Module)
break;
}
}
if (!SearchDirs[Idx].isNormalDir())
continue;
bool IsSystem = SearchDirs[Idx].isSystemHeaderDirectory();
if (loadModuleMapFile(SearchDirs[Idx].getDir(), IsSystem,
false) == LMM_NewlyLoaded) {
Module = ModMap.findModule(ModuleName);
if (Module)
break;
}
SmallString<128> NestedModuleMapDirName;
NestedModuleMapDirName = SearchDirs[Idx].getDir()->getName();
llvm::sys::path::append(NestedModuleMapDirName, ModuleName);
if (loadModuleMapFile(NestedModuleMapDirName, IsSystem,
false) == LMM_NewlyLoaded){
Module = ModMap.findModule(ModuleName);
if (Module)
break;
}
if (SearchDirs[Idx].haveSearchedAllModuleMaps())
continue;
loadSubdirectoryModuleMaps(SearchDirs[Idx]);
Module = ModMap.findModule(ModuleName);
if (Module)
break;
}
return Module;
}
const char *DirectoryLookup::getName() const {
if (isNormalDir())
return getDir()->getName();
if (isFramework())
return getFrameworkDir()->getName();
assert(isHeaderMap() && "Unknown DirectoryLookup");
return getHeaderMap()->getFileName();
}
static const FileEntry *
getFileAndSuggestModule(HeaderSearch &HS, StringRef FileName,
const DirectoryEntry *Dir, bool IsSystemHeaderDir,
ModuleMap::KnownHeader *SuggestedModule) {
HS.hasModuleMap(FileName, Dir, IsSystemHeaderDir);
if (SuggestedModule) {
const FileEntry *File = HS.getFileMgr().getFile(FileName,
false);
if (File) {
*SuggestedModule = HS.findModuleForHeader(File);
if (!SuggestedModule->getModule() &&
HS.hasModuleMap(FileName, Dir, IsSystemHeaderDir))
*SuggestedModule = HS.findModuleForHeader(File);
}
return File;
}
return HS.getFileMgr().getFile(FileName, true);
}
const FileEntry *DirectoryLookup::LookupFile(
StringRef &Filename,
HeaderSearch &HS,
SmallVectorImpl<char> *SearchPath,
SmallVectorImpl<char> *RelativePath,
ModuleMap::KnownHeader *SuggestedModule,
bool &InUserSpecifiedSystemFramework,
bool &HasBeenMapped,
SmallVectorImpl<char> &MappedName) const {
InUserSpecifiedSystemFramework = false;
HasBeenMapped = false;
SmallString<1024> TmpDir;
if (isNormalDir()) {
TmpDir = getDir()->getName();
llvm::sys::path::append(TmpDir, Filename);
if (SearchPath != NULL) {
StringRef SearchPathRef(getDir()->getName());
SearchPath->clear();
SearchPath->append(SearchPathRef.begin(), SearchPathRef.end());
}
if (RelativePath != NULL) {
RelativePath->clear();
RelativePath->append(Filename.begin(), Filename.end());
}
return getFileAndSuggestModule(HS, TmpDir.str(), getDir(),
isSystemHeaderDirectory(),
SuggestedModule);
}
if (isFramework())
return DoFrameworkLookup(Filename, HS, SearchPath, RelativePath,
SuggestedModule, InUserSpecifiedSystemFramework);
assert(isHeaderMap() && "Unknown directory lookup");
const HeaderMap *HM = getHeaderMap();
SmallString<1024> Path;
StringRef Dest = HM->lookupFilename(Filename, Path);
if (Dest.empty())
return 0;
const FileEntry *Result;
if (llvm::sys::path::is_relative(Dest)) {
MappedName.clear();
MappedName.append(Dest.begin(), Dest.end());
Filename = StringRef(MappedName.begin(), MappedName.size());
HasBeenMapped = true;
Result = HM->LookupFile(Filename, HS.getFileMgr());
} else {
Result = HS.getFileMgr().getFile(Dest);
}
if (Result) {
if (SearchPath != NULL) {
StringRef SearchPathRef(getName());
SearchPath->clear();
SearchPath->append(SearchPathRef.begin(), SearchPathRef.end());
}
if (RelativePath != NULL) {
RelativePath->clear();
RelativePath->append(Filename.begin(), Filename.end());
}
}
return Result;
}
static const DirectoryEntry *
getTopFrameworkDir(FileManager &FileMgr, StringRef DirName,
SmallVectorImpl<std::string> &SubmodulePath) {
assert(llvm::sys::path::extension(DirName) == ".framework" &&
"Not a framework directory");
const DirectoryEntry *TopFrameworkDir = FileMgr.getDirectory(DirName);
DirName = FileMgr.getCanonicalName(TopFrameworkDir);
do {
DirName = llvm::sys::path::parent_path(DirName);
if (DirName.empty())
break;
const DirectoryEntry *Dir = FileMgr.getDirectory(DirName);
if (!Dir)
break;
if (llvm::sys::path::extension(DirName) == ".framework") {
SubmodulePath.push_back(llvm::sys::path::stem(DirName));
TopFrameworkDir = Dir;
}
} while (true);
return TopFrameworkDir;
}
const FileEntry *DirectoryLookup::DoFrameworkLookup(
StringRef Filename,
HeaderSearch &HS,
SmallVectorImpl<char> *SearchPath,
SmallVectorImpl<char> *RelativePath,
ModuleMap::KnownHeader *SuggestedModule,
bool &InUserSpecifiedSystemFramework) const
{
FileManager &FileMgr = HS.getFileMgr();
size_t SlashPos = Filename.find('/');
if (SlashPos == StringRef::npos) return 0;
HeaderSearch::FrameworkCacheEntry &CacheEntry =
HS.LookupFrameworkCache(Filename.substr(0, SlashPos));
if (CacheEntry.Directory && CacheEntry.Directory != getFrameworkDir())
return 0;
SmallString<1024> FrameworkName;
FrameworkName += getFrameworkDir()->getName();
if (FrameworkName.empty() || FrameworkName.back() != '/')
FrameworkName.push_back('/');
StringRef ModuleName(Filename.begin(), SlashPos);
FrameworkName += ModuleName;
FrameworkName += ".framework/";
if (CacheEntry.Directory == 0) {
HS.IncrementFrameworkLookupCount();
const DirectoryEntry *Dir = FileMgr.getDirectory(FrameworkName.str());
if (Dir == 0) return 0;
CacheEntry.Directory = getFrameworkDir();
if (getDirCharacteristic() == SrcMgr::C_User) {
SmallString<1024> SystemFrameworkMarker(FrameworkName);
SystemFrameworkMarker += ".system_framework";
if (llvm::sys::fs::exists(SystemFrameworkMarker.str())) {
CacheEntry.IsUserSpecifiedSystemFramework = true;
}
}
}
InUserSpecifiedSystemFramework = CacheEntry.IsUserSpecifiedSystemFramework;
if (RelativePath != NULL) {
RelativePath->clear();
RelativePath->append(Filename.begin()+SlashPos+1, Filename.end());
}
unsigned OrigSize = FrameworkName.size();
FrameworkName += "Headers/";
if (SearchPath != NULL) {
SearchPath->clear();
SearchPath->append(FrameworkName.begin(), FrameworkName.end()-1);
}
FrameworkName.append(Filename.begin()+SlashPos+1, Filename.end());
const FileEntry *FE = FileMgr.getFile(FrameworkName.str(),
!SuggestedModule);
if (!FE) {
const char *Private = "Private";
FrameworkName.insert(FrameworkName.begin()+OrigSize, Private,
Private+strlen(Private));
if (SearchPath != NULL)
SearchPath->insert(SearchPath->begin()+OrigSize, Private,
Private+strlen(Private));
FE = FileMgr.getFile(FrameworkName.str(), !SuggestedModule);
}
if (FE && SuggestedModule) {
StringRef FrameworkPath = FE->getDir()->getName();
bool FoundFramework = false;
do {
const DirectoryEntry *Dir = FileMgr.getDirectory(FrameworkPath);
if (!Dir)
break;
if (llvm::sys::path::extension(FrameworkPath) == ".framework") {
FoundFramework = true;
break;
}
FrameworkPath = llvm::sys::path::parent_path(FrameworkPath);
if (FrameworkPath.empty())
break;
} while (true);
if (FoundFramework) {
SmallVector<std::string, 4> SubmodulePath;
const DirectoryEntry *TopFrameworkDir
= ::getTopFrameworkDir(FileMgr, FrameworkPath, SubmodulePath);
StringRef ModuleName = llvm::sys::path::stem(TopFrameworkDir->getName());
bool IsSystem = getDirCharacteristic() != SrcMgr::C_User;
if (HS.loadFrameworkModule(ModuleName, TopFrameworkDir, IsSystem)) {
*SuggestedModule = HS.findModuleForHeader(FE);
}
} else {
*SuggestedModule = HS.findModuleForHeader(FE);
}
}
return FE;
}
void HeaderSearch::setTarget(const TargetInfo &Target) {
ModMap.setTarget(Target);
}
static const char *copyString(StringRef Str, llvm::BumpPtrAllocator &Alloc) {
assert(!Str.empty());
char *CopyStr = Alloc.Allocate<char>(Str.size()+1);
std::copy(Str.begin(), Str.end(), CopyStr);
CopyStr[Str.size()] = '\0';
return CopyStr;
}
const FileEntry *HeaderSearch::LookupFile(
StringRef Filename, SourceLocation IncludeLoc, bool isAngled,
const DirectoryLookup *FromDir, const DirectoryLookup *&CurDir,
ArrayRef<const FileEntry *> Includers, SmallVectorImpl<char> *SearchPath,
SmallVectorImpl<char> *RelativePath,
ModuleMap::KnownHeader *SuggestedModule, bool SkipCache) {
if (!HSOpts->ModuleMapFiles.empty()) {
for (llvm::SetVector<std::string>::iterator
I = HSOpts->ModuleMapFiles.begin(),
E = HSOpts->ModuleMapFiles.end();
I != E; ++I) {
const FileEntry *File = FileMgr.getFile(*I);
if (!File)
continue;
loadModuleMapFile(File, false);
}
HSOpts->ModuleMapFiles.clear();
}
if (SuggestedModule)
*SuggestedModule = ModuleMap::KnownHeader();
if (llvm::sys::path::is_absolute(Filename)) {
CurDir = 0;
if (FromDir) return 0;
if (SearchPath != NULL)
SearchPath->clear();
if (RelativePath != NULL) {
RelativePath->clear();
RelativePath->append(Filename.begin(), Filename.end());
}
return FileMgr.getFile(Filename, true);
}
if (!Includers.empty() && !isAngled && !NoCurDirSearch) {
SmallString<1024> TmpDir;
for (ArrayRef<const FileEntry *>::iterator I(Includers.begin()),
E(Includers.end());
I != E; ++I) {
const FileEntry *Includer = *I;
TmpDir = Includer->getDir()->getName();
TmpDir.push_back('/');
TmpDir.append(Filename.begin(), Filename.end());
bool IncluderIsSystemHeader =
getFileInfo(Includer).DirInfo != SrcMgr::C_User;
if (const FileEntry *FE =
getFileAndSuggestModule(*this, TmpDir.str(), Includer->getDir(),
IncluderIsSystemHeader,
SuggestedModule)) {
HeaderFileInfo &FromHFI = getFileInfo(Includer);
unsigned DirInfo = FromHFI.DirInfo;
bool IndexHeaderMapHeader = FromHFI.IndexHeaderMapHeader;
StringRef Framework = FromHFI.Framework;
HeaderFileInfo &ToHFI = getFileInfo(FE);
ToHFI.DirInfo = DirInfo;
ToHFI.IndexHeaderMapHeader = IndexHeaderMapHeader;
ToHFI.Framework = Framework;
if (SearchPath != NULL) {
StringRef SearchPathRef(Includer->getDir()->getName());
SearchPath->clear();
SearchPath->append(SearchPathRef.begin(), SearchPathRef.end());
}
if (RelativePath != NULL) {
RelativePath->clear();
RelativePath->append(Filename.begin(), Filename.end());
}
if (I != Includers.begin())
Diags.Report(IncludeLoc, diag::ext_pp_include_search_ms)
<< FE->getName();
return FE;
}
}
}
CurDir = 0;
unsigned i = isAngled ? AngledDirIdx : 0;
if (FromDir)
i = FromDir-&SearchDirs[0];
LookupFileCacheInfo &CacheLookup =
LookupFileCache.GetOrCreateValue(Filename).getValue();
if (!SkipCache && CacheLookup.StartIdx == i+1) {
i = CacheLookup.HitIdx;
if (CacheLookup.MappedName)
Filename = CacheLookup.MappedName;
} else {
CacheLookup.reset(i+1);
}
SmallString<64> MappedName;
for (; i != SearchDirs.size(); ++i) {
bool InUserSpecifiedSystemFramework = false;
bool HasBeenMapped = false;
const FileEntry *FE =
SearchDirs[i].LookupFile(Filename, *this, SearchPath, RelativePath,
SuggestedModule, InUserSpecifiedSystemFramework,
HasBeenMapped, MappedName);
if (HasBeenMapped) {
CacheLookup.MappedName =
copyString(Filename, LookupFileCache.getAllocator());
}
if (!FE) continue;
CurDir = &SearchDirs[i];
HeaderFileInfo &HFI = getFileInfo(FE);
HFI.DirInfo = CurDir->getDirCharacteristic();
if (HFI.DirInfo == SrcMgr::C_User && InUserSpecifiedSystemFramework)
HFI.DirInfo = SrcMgr::C_System;
for (unsigned j = SystemHeaderPrefixes.size(); j; --j) {
if (Filename.startswith(SystemHeaderPrefixes[j-1].first)) {
HFI.DirInfo = SystemHeaderPrefixes[j-1].second ? SrcMgr::C_System
: SrcMgr::C_User;
break;
}
}
if (CurDir->isIndexHeaderMap()) {
size_t SlashPos = Filename.find('/');
if (SlashPos != StringRef::npos) {
HFI.IndexHeaderMapHeader = 1;
HFI.Framework = getUniqueFrameworkName(StringRef(Filename.begin(),
SlashPos));
}
}
CacheLookup.HitIdx = i;
return FE;
}
if (!Includers.empty() && !isAngled &&
Filename.find('/') == StringRef::npos) {
HeaderFileInfo &IncludingHFI = getFileInfo(Includers.front());
if (IncludingHFI.IndexHeaderMapHeader) {
SmallString<128> ScratchFilename;
ScratchFilename += IncludingHFI.Framework;
ScratchFilename += '/';
ScratchFilename += Filename;
const FileEntry *Result = LookupFile(
ScratchFilename, IncludeLoc, true, FromDir, CurDir,
Includers.front(), SearchPath, RelativePath, SuggestedModule);
LookupFileCacheInfo &CacheLookup
= LookupFileCache.GetOrCreateValue(Filename).getValue();
CacheLookup.HitIdx
= LookupFileCache.GetOrCreateValue(ScratchFilename).getValue().HitIdx;
return Result;
}
}
CacheLookup.HitIdx = SearchDirs.size();
return 0;
}
const FileEntry *HeaderSearch::
LookupSubframeworkHeader(StringRef Filename,
const FileEntry *ContextFileEnt,
SmallVectorImpl<char> *SearchPath,
SmallVectorImpl<char> *RelativePath,
ModuleMap::KnownHeader *SuggestedModule) {
assert(ContextFileEnt && "No context file?");
size_t SlashPos = Filename.find('/');
if (SlashPos == StringRef::npos) return 0;
const char *ContextName = ContextFileEnt->getName();
const unsigned DotFrameworkLen = 10;
const char *FrameworkPos = strstr(ContextName, ".framework");
if (FrameworkPos == 0 ||
(FrameworkPos[DotFrameworkLen] != '/' &&
FrameworkPos[DotFrameworkLen] != '\\'))
return 0;
SmallString<1024> FrameworkName(ContextName, FrameworkPos+DotFrameworkLen+1);
FrameworkName += "Frameworks/";
FrameworkName.append(Filename.begin(), Filename.begin()+SlashPos);
FrameworkName += ".framework/";
llvm::StringMapEntry<FrameworkCacheEntry> &CacheLookup =
FrameworkMap.GetOrCreateValue(Filename.substr(0, SlashPos));
if (CacheLookup.getValue().Directory &&
CacheLookup.getKeyLength() == FrameworkName.size() &&
memcmp(CacheLookup.getKeyData(), &FrameworkName[0],
CacheLookup.getKeyLength()) != 0)
return 0;
if (CacheLookup.getValue().Directory == 0) {
++NumSubFrameworkLookups;
const DirectoryEntry *Dir = FileMgr.getDirectory(FrameworkName.str());
if (Dir == 0) return 0;
CacheLookup.getValue().Directory = Dir;
}
const FileEntry *FE = 0;
if (RelativePath != NULL) {
RelativePath->clear();
RelativePath->append(Filename.begin()+SlashPos+1, Filename.end());
}
SmallString<1024> HeadersFilename(FrameworkName);
HeadersFilename += "Headers/";
if (SearchPath != NULL) {
SearchPath->clear();
SearchPath->append(HeadersFilename.begin(), HeadersFilename.end()-1);
}
HeadersFilename.append(Filename.begin()+SlashPos+1, Filename.end());
if (!(FE = FileMgr.getFile(HeadersFilename.str(), true))) {
HeadersFilename = FrameworkName;
HeadersFilename += "PrivateHeaders/";
if (SearchPath != NULL) {
SearchPath->clear();
SearchPath->append(HeadersFilename.begin(), HeadersFilename.end()-1);
}
HeadersFilename.append(Filename.begin()+SlashPos+1, Filename.end());
if (!(FE = FileMgr.getFile(HeadersFilename.str(), true)))
return 0;
}
unsigned DirInfo = getFileInfo(ContextFileEnt).DirInfo;
getFileInfo(FE).DirInfo = DirInfo;
if (SuggestedModule) {
FrameworkName.pop_back(); SmallVector<std::string, 4> SubmodulePath;
const DirectoryEntry *TopFrameworkDir
= ::getTopFrameworkDir(FileMgr, FrameworkName, SubmodulePath);
StringRef ModuleName = llvm::sys::path::stem(TopFrameworkDir->getName());
bool IsSystem = false;
if (loadFrameworkModule(ModuleName, TopFrameworkDir, IsSystem)) {
*SuggestedModule = findModuleForHeader(FE);
}
}
return FE;
}
std::string
HeaderSearch::NormalizeDashIncludePath(StringRef File, FileManager &FileMgr) {
SmallString<128> Path(File);
llvm::sys::fs::make_absolute(Path);
bool exists;
if (llvm::sys::fs::exists(Path.str(), exists) || !exists)
Path = File;
else if (exists)
FileMgr.getFile(File);
return Lexer::Stringify(Path.str());
}
static void mergeHeaderFileInfo(HeaderFileInfo &HFI,
const HeaderFileInfo &OtherHFI) {
HFI.isImport |= OtherHFI.isImport;
HFI.isPragmaOnce |= OtherHFI.isPragmaOnce;
HFI.isModuleHeader |= OtherHFI.isModuleHeader;
HFI.NumIncludes += OtherHFI.NumIncludes;
if (!HFI.ControllingMacro && !HFI.ControllingMacroID) {
HFI.ControllingMacro = OtherHFI.ControllingMacro;
HFI.ControllingMacroID = OtherHFI.ControllingMacroID;
}
if (OtherHFI.External) {
HFI.DirInfo = OtherHFI.DirInfo;
HFI.External = OtherHFI.External;
HFI.IndexHeaderMapHeader = OtherHFI.IndexHeaderMapHeader;
}
if (HFI.Framework.empty())
HFI.Framework = OtherHFI.Framework;
HFI.Resolved = true;
}
HeaderFileInfo &HeaderSearch::getFileInfo(const FileEntry *FE) {
if (FE->getUID() >= FileInfo.size())
FileInfo.resize(FE->getUID()+1);
HeaderFileInfo &HFI = FileInfo[FE->getUID()];
if (ExternalSource && !HFI.Resolved)
mergeHeaderFileInfo(HFI, ExternalSource->GetHeaderFileInfo(FE));
HFI.IsValid = 1;
return HFI;
}
bool HeaderSearch::tryGetFileInfo(const FileEntry *FE, HeaderFileInfo &Result) const {
if (FE->getUID() >= FileInfo.size())
return false;
const HeaderFileInfo &HFI = FileInfo[FE->getUID()];
if (HFI.IsValid) {
Result = HFI;
return true;
}
return false;
}
bool HeaderSearch::isFileMultipleIncludeGuarded(const FileEntry *File) {
if (File->getUID() >= FileInfo.size())
return false;
HeaderFileInfo &HFI = FileInfo[File->getUID()];
if (ExternalSource && !HFI.Resolved)
mergeHeaderFileInfo(HFI, ExternalSource->GetHeaderFileInfo(File));
return HFI.isPragmaOnce || HFI.isImport ||
HFI.ControllingMacro || HFI.ControllingMacroID;
}
void HeaderSearch::MarkFileModuleHeader(const FileEntry *FE,
ModuleMap::ModuleHeaderRole Role,
bool isCompilingModuleHeader) {
if (FE->getUID() >= FileInfo.size())
FileInfo.resize(FE->getUID()+1);
HeaderFileInfo &HFI = FileInfo[FE->getUID()];
HFI.isModuleHeader = true;
HFI.isCompilingModuleHeader = isCompilingModuleHeader;
HFI.setHeaderRole(Role);
}
bool HeaderSearch::ShouldEnterIncludeFile(const FileEntry *File, bool isImport){
++NumIncluded;
HeaderFileInfo &FileInfo = getFileInfo(File);
if (isImport) {
FileInfo.isImport = true;
if (FileInfo.NumIncludes) return false;
} else {
if (FileInfo.isImport)
return false;
}
if (const IdentifierInfo *ControllingMacro
= FileInfo.getControllingMacro(ExternalLookup))
if (ControllingMacro->hasMacroDefinition()) {
++NumMultiIncludeFileOptzn;
return false;
}
++FileInfo.NumIncludes;
return true;
}
size_t HeaderSearch::getTotalMemory() const {
return SearchDirs.capacity()
+ llvm::capacity_in_bytes(FileInfo)
+ llvm::capacity_in_bytes(HeaderMaps)
+ LookupFileCache.getAllocator().getTotalMemory()
+ FrameworkMap.getAllocator().getTotalMemory();
}
StringRef HeaderSearch::getUniqueFrameworkName(StringRef Framework) {
return FrameworkNames.GetOrCreateValue(Framework).getKey();
}
bool HeaderSearch::hasModuleMap(StringRef FileName,
const DirectoryEntry *Root,
bool IsSystem) {
if (!enabledModules())
return false;
SmallVector<const DirectoryEntry *, 2> FixUpDirectories;
StringRef DirName = FileName;
do {
DirName = llvm::sys::path::parent_path(DirName);
if (DirName.empty())
return false;
const DirectoryEntry *Dir = FileMgr.getDirectory(DirName);
if (!Dir)
return false;
switch (loadModuleMapFile(Dir, IsSystem, false)) {
case LMM_NewlyLoaded:
case LMM_AlreadyLoaded:
for (unsigned I = 0, N = FixUpDirectories.size(); I != N; ++I)
DirectoryHasModuleMap[FixUpDirectories[I]] = true;
return true;
case LMM_NoDirectory:
case LMM_InvalidModuleMap:
break;
}
if (Dir == Root)
return false;
FixUpDirectories.push_back(Dir);
} while (true);
}
ModuleMap::KnownHeader
HeaderSearch::findModuleForHeader(const FileEntry *File) const {
if (ExternalSource) {
(void)getFileInfo(File);
}
return ModMap.findModuleForHeader(File);
}
static const FileEntry *getPrivateModuleMap(StringRef ModuleMapPath,
const DirectoryEntry *Directory,
FileManager &FileMgr) {
StringRef Filename = llvm::sys::path::filename(ModuleMapPath);
SmallString<128> PrivateFilename(Directory->getName());
if (Filename == "module.map")
llvm::sys::path::append(PrivateFilename, "module_private.map");
else if (Filename == "module.modulemap")
llvm::sys::path::append(PrivateFilename, "module.private.modulemap");
else
return nullptr;
return FileMgr.getFile(PrivateFilename);
}
bool HeaderSearch::loadModuleMapFile(const FileEntry *File, bool IsSystem) {
switch (loadModuleMapFileImpl(File, IsSystem)) {
case LMM_AlreadyLoaded:
case LMM_NewlyLoaded:
return false;
case LMM_NoDirectory:
case LMM_InvalidModuleMap:
return true;
}
}
HeaderSearch::LoadModuleMapResult
HeaderSearch::loadModuleMapFileImpl(const FileEntry *File, bool IsSystem) {
assert(File && "expected FileEntry");
const DirectoryEntry *Dir = File->getDir();
auto KnownDir = DirectoryHasModuleMap.find(Dir);
if (KnownDir != DirectoryHasModuleMap.end())
return KnownDir->second ? LMM_AlreadyLoaded : LMM_InvalidModuleMap;
if (ModMap.parseModuleMapFile(File, IsSystem)) {
DirectoryHasModuleMap[Dir] = false;
return LMM_InvalidModuleMap;
}
if (const FileEntry *PMMFile =
getPrivateModuleMap(File->getName(), Dir, FileMgr)) {
if (ModMap.parseModuleMapFile(PMMFile, IsSystem)) {
DirectoryHasModuleMap[Dir] = false;
return LMM_InvalidModuleMap;
}
}
DirectoryHasModuleMap[Dir] = true;
return LMM_NewlyLoaded;
}
const FileEntry *
HeaderSearch::lookupModuleMapFile(const DirectoryEntry *Dir, bool IsFramework) {
SmallString<128> ModuleMapFileName(Dir->getName());
if (IsFramework)
llvm::sys::path::append(ModuleMapFileName, "Modules");
llvm::sys::path::append(ModuleMapFileName, "module.modulemap");
if (const FileEntry *F = FileMgr.getFile(ModuleMapFileName))
return F;
ModuleMapFileName = Dir->getName();
llvm::sys::path::append(ModuleMapFileName, "module.map");
return FileMgr.getFile(ModuleMapFileName);
}
Module *HeaderSearch::loadFrameworkModule(StringRef Name,
const DirectoryEntry *Dir,
bool IsSystem) {
if (Module *Module = ModMap.findModule(Name))
return Module;
switch (loadModuleMapFile(Dir, IsSystem, true)) {
case LMM_InvalidModuleMap:
break;
case LMM_AlreadyLoaded:
case LMM_NoDirectory:
return 0;
case LMM_NewlyLoaded:
return ModMap.findModule(Name);
}
return ModMap.inferFrameworkModule(Name, Dir, IsSystem, 0);
}
HeaderSearch::LoadModuleMapResult
HeaderSearch::loadModuleMapFile(StringRef DirName, bool IsSystem,
bool IsFramework) {
if (const DirectoryEntry *Dir = FileMgr.getDirectory(DirName))
return loadModuleMapFile(Dir, IsSystem, IsFramework);
return LMM_NoDirectory;
}
HeaderSearch::LoadModuleMapResult
HeaderSearch::loadModuleMapFile(const DirectoryEntry *Dir, bool IsSystem,
bool IsFramework) {
auto KnownDir = DirectoryHasModuleMap.find(Dir);
if (KnownDir != DirectoryHasModuleMap.end())
return KnownDir->second? LMM_AlreadyLoaded : LMM_InvalidModuleMap;
if (const FileEntry *ModuleMapFile = lookupModuleMapFile(Dir, IsFramework)) {
LoadModuleMapResult Result = loadModuleMapFileImpl(ModuleMapFile, IsSystem);
if (Result == LMM_NewlyLoaded)
DirectoryHasModuleMap[Dir] = true;
return Result;
}
return LMM_InvalidModuleMap;
}
void HeaderSearch::collectAllModules(SmallVectorImpl<Module *> &Modules) {
Modules.clear();
for (unsigned Idx = 0, N = SearchDirs.size(); Idx != N; ++Idx) {
bool IsSystem = SearchDirs[Idx].isSystemHeaderDirectory();
if (SearchDirs[Idx].isFramework()) {
llvm::error_code EC;
SmallString<128> DirNative;
llvm::sys::path::native(SearchDirs[Idx].getFrameworkDir()->getName(),
DirNative);
for (llvm::sys::fs::directory_iterator Dir(DirNative.str(), EC), DirEnd;
Dir != DirEnd && !EC; Dir.increment(EC)) {
if (llvm::sys::path::extension(Dir->path()) != ".framework")
continue;
const DirectoryEntry *FrameworkDir = FileMgr.getDirectory(Dir->path());
if (!FrameworkDir)
continue;
loadFrameworkModule(llvm::sys::path::stem(Dir->path()), FrameworkDir,
IsSystem);
}
continue;
}
if (SearchDirs[Idx].isHeaderMap())
continue;
loadModuleMapFile(SearchDirs[Idx].getDir(), IsSystem, false);
loadSubdirectoryModuleMaps(SearchDirs[Idx]);
}
for (ModuleMap::module_iterator M = ModMap.module_begin(),
MEnd = ModMap.module_end();
M != MEnd; ++M) {
Modules.push_back(M->getValue());
}
}
void HeaderSearch::loadTopLevelSystemModules() {
for (unsigned Idx = 0, N = SearchDirs.size(); Idx != N; ++Idx) {
if (!SearchDirs[Idx].isNormalDir()) {
continue;
}
loadModuleMapFile(SearchDirs[Idx].getDir(),
SearchDirs[Idx].isSystemHeaderDirectory(),
SearchDirs[Idx].isFramework());
}
}
void HeaderSearch::loadSubdirectoryModuleMaps(DirectoryLookup &SearchDir) {
if (SearchDir.haveSearchedAllModuleMaps())
return;
llvm::error_code EC;
SmallString<128> DirNative;
llvm::sys::path::native(SearchDir.getDir()->getName(), DirNative);
for (llvm::sys::fs::directory_iterator Dir(DirNative.str(), EC), DirEnd;
Dir != DirEnd && !EC; Dir.increment(EC)) {
loadModuleMapFile(Dir->path(), SearchDir.isSystemHeaderDirectory(),
SearchDir.isFramework());
}
SearchDir.setSearchedAllModuleMaps(true);
}