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llvm-project/clang/lib/Lex/HeaderSearch.cpp
Alp Toker d4a3f0e894 Hide the concept of diagnostic levels from lex, parse and sema 
The compilation pipeline doesn't actually need to know about the high-level
concept of diagnostic mappings, and hiding the final computed level presents
several simplifications and other potential benefits.

The only exceptions are opportunistic checks to see whether expensive code
paths can be avoided for diagnostics that are guaranteed to be ignored at a
certain SourceLocation.

This commit formalizes that invariant by introducing and using
DiagnosticsEngine::isIgnored() in place of individual level checks throughout
lex, parse and sema.

llvm-svn: 211005
2014-06-15 23:30:39 +00:00

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//===--- HeaderSearch.cpp - Resolve Header File Locations ---===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the DirectoryLookup and HeaderSearch interfaces.
//
//===----------------------------------------------------------------------===//
#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 nullptr;
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 = nullptr;
ExternalSource = nullptr;
NumIncluded = 0;
NumMultiIncludeFileOptzn = 0;
NumFrameworkLookups = NumSubFrameworkLookups = 0;
EnabledModules = LangOpts.Modules;
}
HeaderSearch::~HeaderSearch() {
// Delete headermaps.
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);
}
/// CreateHeaderMap - This method returns a HeaderMap for the specified
/// FileEntry, uniquing them through the 'HeaderMaps' datastructure.
const HeaderMap *HeaderSearch::CreateHeaderMap(const FileEntry *FE) {
// We expect the number of headermaps to be small, and almost always empty.
// If it ever grows, use of a linear search should be re-evaluated.
if (!HeaderMaps.empty()) {
for (unsigned i = 0, e = HeaderMaps.size(); i != e; ++i)
// Pointer equality comparison of FileEntries works because they are
// already uniqued by inode.
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 nullptr;
}
std::string HeaderSearch::getModuleFileName(Module *Module) {
return getModuleFileName(Module->Name, Module->ModuleMap->getName());
}
std::string HeaderSearch::getModuleFileName(StringRef ModuleName,
StringRef ModuleMapPath) {
// If we don't have a module cache path, we can't do anything.
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 {
// Construct the name <ModuleName>-<hash of ModuleMapPath>.pcm which should
// be globally unique to this particular module. To avoid false-negatives
// on case-insensitive filesystems, we use lower-case, which is safe because
// to cause a collision the modules must have the same name, which is an
// error if they are imported in the same translation.
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, /*Radix*/36);
llvm::sys::path::append(Result, ModuleName + "-" + HashStr.str() + ".pcm");
}
return Result.str().str();
}
Module *HeaderSearch::lookupModule(StringRef ModuleName, bool AllowSearch) {
// Look in the module map to determine if there is a module by this name.
Module *Module = ModMap.findModule(ModuleName);
if (Module || !AllowSearch)
return Module;
// Look through the various header search paths to load any available module
// maps, searching for a module map that describes this module.
for (unsigned Idx = 0, N = SearchDirs.size(); Idx != N; ++Idx) {
if (SearchDirs[Idx].isFramework()) {
// Search for or infer a module map for a framework.
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;
}
}
// FIXME: Figure out how header maps and module maps will work together.
// Only deal with normal search directories.
if (!SearchDirs[Idx].isNormalDir())
continue;
bool IsSystem = SearchDirs[Idx].isSystemHeaderDirectory();
// Search for a module map file in this directory.
if (loadModuleMapFile(SearchDirs[Idx].getDir(), IsSystem,
/*IsFramework*/false) == LMM_NewlyLoaded) {
// We just loaded a module map file; check whether the module is
// available now.
Module = ModMap.findModule(ModuleName);
if (Module)
break;
}
// Search for a module map in a subdirectory with the same name as the
// module.
SmallString<128> NestedModuleMapDirName;
NestedModuleMapDirName = SearchDirs[Idx].getDir()->getName();
llvm::sys::path::append(NestedModuleMapDirName, ModuleName);
if (loadModuleMapFile(NestedModuleMapDirName, IsSystem,
/*IsFramework*/false) == LMM_NewlyLoaded){
// If we just loaded a module map file, look for the module again.
Module = ModMap.findModule(ModuleName);
if (Module)
break;
}
// If we've already performed the exhaustive search for module maps in this
// search directory, don't do it again.
if (SearchDirs[Idx].haveSearchedAllModuleMaps())
continue;
// Load all module maps in the immediate subdirectories of this search
// directory.
loadSubdirectoryModuleMaps(SearchDirs[Idx]);
// Look again for the module.
Module = ModMap.findModule(ModuleName);
if (Module)
break;
}
return Module;
}
//===----------------------------------------------------------------------===//
// File lookup within a DirectoryLookup scope
//===----------------------------------------------------------------------===//
/// getName - Return the directory or filename corresponding to this lookup
/// object.
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) {
// If we have a module map that might map this header, load it and
// check whether we'll have a suggestion for a module.
HS.hasModuleMap(FileName, Dir, IsSystemHeaderDir);
if (SuggestedModule) {
const FileEntry *File = HS.getFileMgr().getFile(FileName,
/*OpenFile=*/false);
if (File) {
// If there is a module that corresponds to this header, suggest it.
*SuggestedModule = HS.findModuleForHeader(File);
// FIXME: This appears to be a no-op. We loaded the module map for this
// directory at the start of this function.
if (!SuggestedModule->getModule() &&
HS.hasModuleMap(FileName, Dir, IsSystemHeaderDir))
*SuggestedModule = HS.findModuleForHeader(File);
}
return File;
}
return HS.getFileMgr().getFile(FileName, /*openFile=*/true);
}
/// LookupFile - Lookup the specified file in this search path, returning it
/// if it exists or returning null if not.
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()) {
// Concatenate the requested file onto the directory.
TmpDir = getDir()->getName();
llvm::sys::path::append(TmpDir, Filename);
if (SearchPath) {
StringRef SearchPathRef(getDir()->getName());
SearchPath->clear();
SearchPath->append(SearchPathRef.begin(), SearchPathRef.end());
}
if (RelativePath) {
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 nullptr;
const FileEntry *Result;
// Check if the headermap maps the filename to a framework include
// ("Foo.h" -> "Foo/Foo.h"), in which case continue header lookup using the
// framework include.
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) {
StringRef SearchPathRef(getName());
SearchPath->clear();
SearchPath->append(SearchPathRef.begin(), SearchPathRef.end());
}
if (RelativePath) {
RelativePath->clear();
RelativePath->append(Filename.begin(), Filename.end());
}
}
return Result;
}
/// \brief Given a framework directory, find the top-most framework directory.
///
/// \param FileMgr The file manager to use for directory lookups.
/// \param DirName The name of the framework directory.
/// \param SubmodulePath Will be populated with the submodule path from the
/// returned top-level module to the originally named framework.
static const DirectoryEntry *
getTopFrameworkDir(FileManager &FileMgr, StringRef DirName,
SmallVectorImpl<std::string> &SubmodulePath) {
assert(llvm::sys::path::extension(DirName) == ".framework" &&
"Not a framework directory");
// Note: as an egregious but useful hack we use the real path here, because
// frameworks moving between top-level frameworks to embedded frameworks tend
// to be symlinked, and we base the logical structure of modules on the
// physical layout. In particular, we need to deal with crazy includes like
//
// #include <Foo/Frameworks/Bar.framework/Headers/Wibble.h>
//
// where 'Bar' used to be embedded in 'Foo', is now a top-level framework
// which one should access with, e.g.,
//
// #include <Bar/Wibble.h>
//
// Similar issues occur when a top-level framework has moved into an
// embedded framework.
const DirectoryEntry *TopFrameworkDir = FileMgr.getDirectory(DirName);
DirName = FileMgr.getCanonicalName(TopFrameworkDir);
do {
// Get the parent directory name.
DirName = llvm::sys::path::parent_path(DirName);
if (DirName.empty())
break;
// Determine whether this directory exists.
const DirectoryEntry *Dir = FileMgr.getDirectory(DirName);
if (!Dir)
break;
// If this is a framework directory, then we're a subframework of this
// framework.
if (llvm::sys::path::extension(DirName) == ".framework") {
SubmodulePath.push_back(llvm::sys::path::stem(DirName));
TopFrameworkDir = Dir;
}
} while (true);
return TopFrameworkDir;
}
/// DoFrameworkLookup - Do a lookup of the specified file in the current
/// DirectoryLookup, which is a framework directory.
const FileEntry *DirectoryLookup::DoFrameworkLookup(
StringRef Filename,
HeaderSearch &HS,
SmallVectorImpl<char> *SearchPath,
SmallVectorImpl<char> *RelativePath,
ModuleMap::KnownHeader *SuggestedModule,
bool &InUserSpecifiedSystemFramework) const
{
FileManager &FileMgr = HS.getFileMgr();
// Framework names must have a '/' in the filename.
size_t SlashPos = Filename.find('/');
if (SlashPos == StringRef::npos) return nullptr;
// Find out if this is the home for the specified framework, by checking
// HeaderSearch. Possible answers are yes/no and unknown.
HeaderSearch::FrameworkCacheEntry &CacheEntry =
HS.LookupFrameworkCache(Filename.substr(0, SlashPos));
// If it is known and in some other directory, fail.
if (CacheEntry.Directory && CacheEntry.Directory != getFrameworkDir())
return nullptr;
// Otherwise, construct the path to this framework dir.
// FrameworkName = "/System/Library/Frameworks/"
SmallString<1024> FrameworkName;
FrameworkName += getFrameworkDir()->getName();
if (FrameworkName.empty() || FrameworkName.back() != '/')
FrameworkName.push_back('/');
// FrameworkName = "/System/Library/Frameworks/Cocoa"
StringRef ModuleName(Filename.begin(), SlashPos);
FrameworkName += ModuleName;
// FrameworkName = "/System/Library/Frameworks/Cocoa.framework/"
FrameworkName += ".framework/";
// If the cache entry was unresolved, populate it now.
if (!CacheEntry.Directory) {
HS.IncrementFrameworkLookupCount();
// If the framework dir doesn't exist, we fail.
const DirectoryEntry *Dir = FileMgr.getDirectory(FrameworkName.str());
if (!Dir) return nullptr;
// Otherwise, if it does, remember that this is the right direntry for this
// framework.
CacheEntry.Directory = getFrameworkDir();
// If this is a user search directory, check if the framework has been
// user-specified as a system framework.
if (getDirCharacteristic() == SrcMgr::C_User) {
SmallString<1024> SystemFrameworkMarker(FrameworkName);
SystemFrameworkMarker += ".system_framework";
if (llvm::sys::fs::exists(SystemFrameworkMarker.str())) {
CacheEntry.IsUserSpecifiedSystemFramework = true;
}
}
}
// Set the 'user-specified system framework' flag.
InUserSpecifiedSystemFramework = CacheEntry.IsUserSpecifiedSystemFramework;
if (RelativePath) {
RelativePath->clear();
RelativePath->append(Filename.begin()+SlashPos+1, Filename.end());
}
// Check "/System/Library/Frameworks/Cocoa.framework/Headers/file.h"
unsigned OrigSize = FrameworkName.size();
FrameworkName += "Headers/";
if (SearchPath) {
SearchPath->clear();
// Without trailing '/'.
SearchPath->append(FrameworkName.begin(), FrameworkName.end()-1);
}
FrameworkName.append(Filename.begin()+SlashPos+1, Filename.end());
const FileEntry *FE = FileMgr.getFile(FrameworkName.str(),
/*openFile=*/!SuggestedModule);
if (!FE) {
// Check "/System/Library/Frameworks/Cocoa.framework/PrivateHeaders/file.h"
const char *Private = "Private";
FrameworkName.insert(FrameworkName.begin()+OrigSize, Private,
Private+strlen(Private));
if (SearchPath)
SearchPath->insert(SearchPath->begin()+OrigSize, Private,
Private+strlen(Private));
FE = FileMgr.getFile(FrameworkName.str(), /*openFile=*/!SuggestedModule);
}
// If we found the header and are allowed to suggest a module, do so now.
if (FE && SuggestedModule) {
// Find the framework in which this header occurs.
StringRef FrameworkPath = FE->getDir()->getName();
bool FoundFramework = false;
do {
// Determine whether this directory exists.
const DirectoryEntry *Dir = FileMgr.getDirectory(FrameworkPath);
if (!Dir)
break;
// If this is a framework directory, then we're a subframework of this
// framework.
if (llvm::sys::path::extension(FrameworkPath) == ".framework") {
FoundFramework = true;
break;
}
// Get the parent directory name.
FrameworkPath = llvm::sys::path::parent_path(FrameworkPath);
if (FrameworkPath.empty())
break;
} while (true);
if (FoundFramework) {
// Find the top-level framework based on this framework.
SmallVector<std::string, 4> SubmodulePath;
const DirectoryEntry *TopFrameworkDir
= ::getTopFrameworkDir(FileMgr, FrameworkPath, SubmodulePath);
// Determine the name of the top-level framework.
StringRef ModuleName = llvm::sys::path::stem(TopFrameworkDir->getName());
// Load this framework module. If that succeeds, find the suggested module
// for this header, if any.
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);
}
//===----------------------------------------------------------------------===//
// Header File Location.
//===----------------------------------------------------------------------===//
/// \brief Return true with a diagnostic if the file that MSVC would have found
/// fails to match the one that Clang would have found with MSVC header search
/// disabled.
static bool checkMSVCHeaderSearch(DiagnosticsEngine &Diags,
const FileEntry *MSFE, const FileEntry *FE,
SourceLocation IncludeLoc) {
if (MSFE && FE != MSFE) {
Diags.Report(IncludeLoc, diag::ext_pp_include_search_ms) << MSFE->getName();
return true;
}
return false;
}
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;
}
/// LookupFile - Given a "foo" or \<foo> reference, look up the indicated file,
/// return null on failure. isAngled indicates whether the file reference is
/// for system \#include's or not (i.e. using <> instead of ""). Includers, if
/// non-empty, indicates where the \#including file(s) are, in case a relative
/// search is needed. Microsoft mode will pass all \#including files.
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()) {
// Preload all explicitly specified module map files. This enables modules
// map files lying in a directory structure separate from the header files
// that they describe. These cannot be loaded lazily upon encountering a
// header file, as there is no other known mapping from a header file to its
// module map file.
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, /*IsSystem=*/false);
}
HSOpts->ModuleMapFiles.clear();
}
if (SuggestedModule)
*SuggestedModule = ModuleMap::KnownHeader();
// If 'Filename' is absolute, check to see if it exists and no searching.
if (llvm::sys::path::is_absolute(Filename)) {
CurDir = nullptr;
// If this was an #include_next "/absolute/file", fail.
if (FromDir) return nullptr;
if (SearchPath)
SearchPath->clear();
if (RelativePath) {
RelativePath->clear();
RelativePath->append(Filename.begin(), Filename.end());
}
// Otherwise, just return the file.
return FileMgr.getFile(Filename, /*openFile=*/true);
}
// This is the header that MSVC's header search would have found.
const FileEntry *MSFE = nullptr;
ModuleMap::KnownHeader MSSuggestedModule;
// Unless disabled, check to see if the file is in the #includer's
// directory. This cannot be based on CurDir, because each includer could be
// a #include of a subdirectory (#include "foo/bar.h") and a subsequent
// include of "baz.h" should resolve to "whatever/foo/baz.h".
// This search is not done for <> headers.
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;
// Concatenate the requested file onto the directory.
// FIXME: Portability. Filename concatenation should be in sys::Path.
TmpDir = Includer->getDir()->getName();
TmpDir.push_back('/');
TmpDir.append(Filename.begin(), Filename.end());
// FIXME: We don't cache the result of getFileInfo across the call to
// getFileAndSuggestModule, because it's a reference to an element of
// a container that could be reallocated across this call.
bool IncluderIsSystemHeader =
getFileInfo(Includer).DirInfo != SrcMgr::C_User;
if (const FileEntry *FE =
getFileAndSuggestModule(*this, TmpDir.str(), Includer->getDir(),
IncluderIsSystemHeader,
SuggestedModule)) {
// Leave CurDir unset.
// This file is a system header or C++ unfriendly if the old file is.
//
// Note that we only use one of FromHFI/ToHFI at once, due to potential
// reallocation of the underlying vector potentially making the first
// reference binding dangling.
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) {
StringRef SearchPathRef(Includer->getDir()->getName());
SearchPath->clear();
SearchPath->append(SearchPathRef.begin(), SearchPathRef.end());
}
if (RelativePath) {
RelativePath->clear();
RelativePath->append(Filename.begin(), Filename.end());
}
if (I == Includers.begin())
return FE;
// Otherwise, we found the path via MSVC header search rules. If
// -Wmsvc-include is enabled, we have to keep searching to see if we
// would've found this header in -I or -isystem directories.
if (Diags.isIgnored(diag::ext_pp_include_search_ms, IncludeLoc)) {
return FE;
} else {
MSFE = FE;
if (SuggestedModule) {
MSSuggestedModule = *SuggestedModule;
*SuggestedModule = ModuleMap::KnownHeader();
}
break;
}
}
}
}
CurDir = nullptr;
// If this is a system #include, ignore the user #include locs.
unsigned i = isAngled ? AngledDirIdx : 0;
// If this is a #include_next request, start searching after the directory the
// file was found in.
if (FromDir)
i = FromDir-&SearchDirs[0];
// Cache all of the lookups performed by this method. Many headers are
// multiply included, and the "pragma once" optimization prevents them from
// being relex/pp'd, but they would still have to search through a
// (potentially huge) series of SearchDirs to find it.
LookupFileCacheInfo &CacheLookup =
LookupFileCache.GetOrCreateValue(Filename).getValue();
// If the entry has been previously looked up, the first value will be
// non-zero. If the value is equal to i (the start point of our search), then
// this is a matching hit.
if (!SkipCache && CacheLookup.StartIdx == i+1) {
// Skip querying potentially lots of directories for this lookup.
i = CacheLookup.HitIdx;
if (CacheLookup.MappedName)
Filename = CacheLookup.MappedName;
} else {
// Otherwise, this is the first query, or the previous query didn't match
// our search start. We will fill in our found location below, so prime the
// start point value.
CacheLookup.reset(/*StartIdx=*/i+1);
}
SmallString<64> MappedName;
// Check each directory in sequence to see if it contains this file.
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];
// This file is a system header or C++ unfriendly if the dir is.
HeaderFileInfo &HFI = getFileInfo(FE);
HFI.DirInfo = CurDir->getDirCharacteristic();
// If the directory characteristic is User but this framework was
// user-specified to be treated as a system framework, promote the
// characteristic.
if (HFI.DirInfo == SrcMgr::C_User && InUserSpecifiedSystemFramework)
HFI.DirInfo = SrcMgr::C_System;
// If the filename matches a known system header prefix, override
// whether the file is a system header.
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 this file is found in a header map and uses the framework style of
// includes, then this header is part of a framework we're building.
if (CurDir->isIndexHeaderMap()) {
size_t SlashPos = Filename.find('/');
if (SlashPos != StringRef::npos) {
HFI.IndexHeaderMapHeader = 1;
HFI.Framework = getUniqueFrameworkName(StringRef(Filename.begin(),
SlashPos));
}
}
if (checkMSVCHeaderSearch(Diags, MSFE, FE, IncludeLoc)) {
if (SuggestedModule)
*SuggestedModule = MSSuggestedModule;
return MSFE;
}
// Remember this location for the next lookup we do.
CacheLookup.HitIdx = i;
return FE;
}
// If we are including a file with a quoted include "foo.h" from inside
// a header in a framework that is currently being built, and we couldn't
// resolve "foo.h" any other way, change the include to <Foo/foo.h>, where
// "Foo" is the name of the framework in which the including header was found.
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 *FE = LookupFile(
ScratchFilename, IncludeLoc, /*isAngled=*/true, FromDir, CurDir,
Includers.front(), SearchPath, RelativePath, SuggestedModule);
if (checkMSVCHeaderSearch(Diags, MSFE, FE, IncludeLoc)) {
if (SuggestedModule)
*SuggestedModule = MSSuggestedModule;
return MSFE;
}
LookupFileCacheInfo &CacheLookup
= LookupFileCache.GetOrCreateValue(Filename).getValue();
CacheLookup.HitIdx
= LookupFileCache.GetOrCreateValue(ScratchFilename).getValue().HitIdx;
// FIXME: SuggestedModule.
return FE;
}
}
if (checkMSVCHeaderSearch(Diags, MSFE, nullptr, IncludeLoc)) {
if (SuggestedModule)
*SuggestedModule = MSSuggestedModule;
return MSFE;
}
// Otherwise, didn't find it. Remember we didn't find this.
CacheLookup.HitIdx = SearchDirs.size();
return nullptr;
}
/// LookupSubframeworkHeader - Look up a subframework for the specified
/// \#include file. For example, if \#include'ing <HIToolbox/HIToolbox.h> from
/// within ".../Carbon.framework/Headers/Carbon.h", check to see if HIToolbox
/// is a subframework within Carbon.framework. If so, return the FileEntry
/// for the designated file, otherwise return null.
const FileEntry *HeaderSearch::
LookupSubframeworkHeader(StringRef Filename,
const FileEntry *ContextFileEnt,
SmallVectorImpl<char> *SearchPath,
SmallVectorImpl<char> *RelativePath,
ModuleMap::KnownHeader *SuggestedModule) {
assert(ContextFileEnt && "No context file?");
// Framework names must have a '/' in the filename. Find it.
// FIXME: Should we permit '\' on Windows?
size_t SlashPos = Filename.find('/');
if (SlashPos == StringRef::npos) return nullptr;
// Look up the base framework name of the ContextFileEnt.
const char *ContextName = ContextFileEnt->getName();
// If the context info wasn't a framework, couldn't be a subframework.
const unsigned DotFrameworkLen = 10;
const char *FrameworkPos = strstr(ContextName, ".framework");
if (FrameworkPos == nullptr ||
(FrameworkPos[DotFrameworkLen] != '/' &&
FrameworkPos[DotFrameworkLen] != '\\'))
return nullptr;
SmallString<1024> FrameworkName(ContextName, FrameworkPos+DotFrameworkLen+1);
// Append Frameworks/HIToolbox.framework/
FrameworkName += "Frameworks/";
FrameworkName.append(Filename.begin(), Filename.begin()+SlashPos);
FrameworkName += ".framework/";
llvm::StringMapEntry<FrameworkCacheEntry> &CacheLookup =
FrameworkMap.GetOrCreateValue(Filename.substr(0, SlashPos));
// Some other location?
if (CacheLookup.getValue().Directory &&
CacheLookup.getKeyLength() == FrameworkName.size() &&
memcmp(CacheLookup.getKeyData(), &FrameworkName[0],
CacheLookup.getKeyLength()) != 0)
return nullptr;
// Cache subframework.
if (!CacheLookup.getValue().Directory) {
++NumSubFrameworkLookups;
// If the framework dir doesn't exist, we fail.
const DirectoryEntry *Dir = FileMgr.getDirectory(FrameworkName.str());
if (!Dir) return nullptr;
// Otherwise, if it does, remember that this is the right direntry for this
// framework.
CacheLookup.getValue().Directory = Dir;
}
const FileEntry *FE = nullptr;
if (RelativePath) {
RelativePath->clear();
RelativePath->append(Filename.begin()+SlashPos+1, Filename.end());
}
// Check ".../Frameworks/HIToolbox.framework/Headers/HIToolbox.h"
SmallString<1024> HeadersFilename(FrameworkName);
HeadersFilename += "Headers/";
if (SearchPath) {
SearchPath->clear();
// Without trailing '/'.
SearchPath->append(HeadersFilename.begin(), HeadersFilename.end()-1);
}
HeadersFilename.append(Filename.begin()+SlashPos+1, Filename.end());
if (!(FE = FileMgr.getFile(HeadersFilename.str(), /*openFile=*/true))) {
// Check ".../Frameworks/HIToolbox.framework/PrivateHeaders/HIToolbox.h"
HeadersFilename = FrameworkName;
HeadersFilename += "PrivateHeaders/";
if (SearchPath) {
SearchPath->clear();
// Without trailing '/'.
SearchPath->append(HeadersFilename.begin(), HeadersFilename.end()-1);
}
HeadersFilename.append(Filename.begin()+SlashPos+1, Filename.end());
if (!(FE = FileMgr.getFile(HeadersFilename.str(), /*openFile=*/true)))
return nullptr;
}
// This file is a system header or C++ unfriendly if the old file is.
//
// Note that the temporary 'DirInfo' is required here, as either call to
// getFileInfo could resize the vector and we don't want to rely on order
// of evaluation.
unsigned DirInfo = getFileInfo(ContextFileEnt).DirInfo;
getFileInfo(FE).DirInfo = DirInfo;
// If we're supposed to suggest a module, look for one now.
if (SuggestedModule) {
// Find the top-level framework based on this framework.
FrameworkName.pop_back(); // remove the trailing '/'
SmallVector<std::string, 4> SubmodulePath;
const DirectoryEntry *TopFrameworkDir
= ::getTopFrameworkDir(FileMgr, FrameworkName, SubmodulePath);
// Determine the name of the top-level framework.
StringRef ModuleName = llvm::sys::path::stem(TopFrameworkDir->getName());
// Load this framework module. If that succeeds, find the suggested module
// for this header, if any.
bool IsSystem = false;
if (loadFrameworkModule(ModuleName, TopFrameworkDir, IsSystem)) {
*SuggestedModule = findModuleForHeader(FE);
}
}
return FE;
}
/// \brief Helper static function to normalize a path for injection into
/// a synthetic header.
/*static*/ std::string
HeaderSearch::NormalizeDashIncludePath(StringRef File, FileManager &FileMgr) {
// Implicit include paths should be resolved relative to the current
// working directory first, and then use the regular header search
// mechanism. The proper way to handle this is to have the
// predefines buffer located at the current working directory, but
// it has no file entry. For now, workaround this by using an
// absolute path if we find the file here, and otherwise letting
// header search handle it.
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());
}
//===----------------------------------------------------------------------===//
// File Info Management.
//===----------------------------------------------------------------------===//
/// \brief Merge the header file info provided by \p OtherHFI into the current
/// header file info (\p HFI)
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;
}
/// getFileInfo - Return the HeaderFileInfo structure for the specified
/// FileEntry.
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) {
// Check if we've ever seen this file as a header.
if (File->getUID() >= FileInfo.size())
return false;
// Resolve header file info from the external source, if needed.
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; // Count # of attempted #includes.
// Get information about this file.
HeaderFileInfo &FileInfo = getFileInfo(File);
// If this is a #import directive, check that we have not already imported
// this header.
if (isImport) {
// If this has already been imported, don't import it again.
FileInfo.isImport = true;
// Has this already been #import'ed or #include'd?
if (FileInfo.NumIncludes) return false;
} else {
// Otherwise, if this is a #include of a file that was previously #import'd
// or if this is the second #include of a #pragma once file, ignore it.
if (FileInfo.isImport)
return false;
}
// Next, check to see if the file is wrapped with #ifndef guards. If so, and
// if the macro that guards it is defined, we know the #include has no effect.
if (const IdentifierInfo *ControllingMacro
= FileInfo.getControllingMacro(ExternalLookup))
if (ControllingMacro->hasMacroDefinition()) {
++NumMultiIncludeFileOptzn;
return false;
}
// Increment the number of times this file has been included.
++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 {
// Get the parent directory name.
DirName = llvm::sys::path::parent_path(DirName);
if (DirName.empty())
return false;
// Determine whether this directory exists.
const DirectoryEntry *Dir = FileMgr.getDirectory(DirName);
if (!Dir)
return false;
// Try to load the module map file in this directory.
switch (loadModuleMapFile(Dir, IsSystem, /*IsFramework*/false)) {
case LMM_NewlyLoaded:
case LMM_AlreadyLoaded:
// Success. All of the directories we stepped through inherit this module
// map file.
for (unsigned I = 0, N = FixUpDirectories.size(); I != N; ++I)
DirectoryHasModuleMap[FixUpDirectories[I]] = true;
return true;
case LMM_NoDirectory:
case LMM_InvalidModuleMap:
break;
}
// If we hit the top of our search, we're done.
if (Dir == Root)
return false;
// Keep track of all of the directories we checked, so we can mark them as
// having module maps if we eventually do find a module map.
FixUpDirectories.push_back(Dir);
} while (true);
}
ModuleMap::KnownHeader
HeaderSearch::findModuleForHeader(const FileEntry *File) const {
if (ExternalSource) {
// Make sure the external source has handled header info about this file,
// which includes whether the file is part of a module.
(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;
}
llvm_unreachable("Unknown load module map result");
}
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;
}
// Try to load a corresponding private module map.
if (const FileEntry *PMMFile =
getPrivateModuleMap(File->getName(), Dir, FileMgr)) {
if (ModMap.parseModuleMapFile(PMMFile, IsSystem)) {
DirectoryHasModuleMap[Dir] = false;
return LMM_InvalidModuleMap;
}
}
// This directory has a module map.
DirectoryHasModuleMap[Dir] = true;
return LMM_NewlyLoaded;
}
const FileEntry *
HeaderSearch::lookupModuleMapFile(const DirectoryEntry *Dir, bool IsFramework) {
// For frameworks, the preferred spelling is Modules/module.modulemap, but
// module.map at the framework root is also accepted.
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;
// Continue to allow module.map
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;
// Try to load a module map file.
switch (loadModuleMapFile(Dir, IsSystem, /*IsFramework*/true)) {
case LMM_InvalidModuleMap:
break;
case LMM_AlreadyLoaded:
case LMM_NoDirectory:
return nullptr;
case LMM_NewlyLoaded:
return ModMap.findModule(Name);
}
// Try to infer a module map from the framework directory.
return ModMap.inferFrameworkModule(Name, Dir, IsSystem, /*Parent=*/nullptr);
}
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);
// Add Dir explicitly in case ModuleMapFile is in a subdirectory.
// E.g. Foo.framework/Modules/module.modulemap
// ^Dir ^ModuleMapFile
if (Result == LMM_NewlyLoaded)
DirectoryHasModuleMap[Dir] = true;
return Result;
}
return LMM_InvalidModuleMap;
}
void HeaderSearch::collectAllModules(SmallVectorImpl<Module *> &Modules) {
Modules.clear();
// Load module maps for each of the header search directories.
for (unsigned Idx = 0, N = SearchDirs.size(); Idx != N; ++Idx) {
bool IsSystem = SearchDirs[Idx].isSystemHeaderDirectory();
if (SearchDirs[Idx].isFramework()) {
std::error_code EC;
SmallString<128> DirNative;
llvm::sys::path::native(SearchDirs[Idx].getFrameworkDir()->getName(),
DirNative);
// Search each of the ".framework" directories to load them as modules.
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;
// Load this framework module.
loadFrameworkModule(llvm::sys::path::stem(Dir->path()), FrameworkDir,
IsSystem);
}
continue;
}
// FIXME: Deal with header maps.
if (SearchDirs[Idx].isHeaderMap())
continue;
// Try to load a module map file for the search directory.
loadModuleMapFile(SearchDirs[Idx].getDir(), IsSystem, /*IsFramework*/false);
// Try to load module map files for immediate subdirectories of this search
// directory.
loadSubdirectoryModuleMaps(SearchDirs[Idx]);
}
// Populate the list of modules.
for (ModuleMap::module_iterator M = ModMap.module_begin(),
MEnd = ModMap.module_end();
M != MEnd; ++M) {
Modules.push_back(M->getValue());
}
}
void HeaderSearch::loadTopLevelSystemModules() {
// Load module maps for each of the header search directories.
for (unsigned Idx = 0, N = SearchDirs.size(); Idx != N; ++Idx) {
// We only care about normal header directories.
if (!SearchDirs[Idx].isNormalDir()) {
continue;
}
// Try to load a module map file for the search directory.
loadModuleMapFile(SearchDirs[Idx].getDir(),
SearchDirs[Idx].isSystemHeaderDirectory(),
SearchDirs[Idx].isFramework());
}
}
void HeaderSearch::loadSubdirectoryModuleMaps(DirectoryLookup &SearchDir) {
if (SearchDir.haveSearchedAllModuleMaps())
return;
std::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);
}
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