1 //===--- ModuleMap.cpp - Describe the layout of modules ---------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the ModuleMap implementation, which describes the layout
11 // of a module as it relates to headers.
13 //===----------------------------------------------------------------------===//
14 #include "clang/Lex/ModuleMap.h"
15 #include "clang/Basic/CharInfo.h"
16 #include "clang/Basic/Diagnostic.h"
17 #include "clang/Basic/DiagnosticOptions.h"
18 #include "clang/Basic/FileManager.h"
19 #include "clang/Basic/TargetInfo.h"
20 #include "clang/Basic/TargetOptions.h"
21 #include "clang/Lex/HeaderSearch.h"
22 #include "clang/Lex/HeaderSearchOptions.h"
23 #include "clang/Lex/LexDiagnostic.h"
24 #include "clang/Lex/Lexer.h"
25 #include "clang/Lex/LiteralSupport.h"
26 #include "llvm/ADT/StringRef.h"
27 #include "llvm/ADT/StringSwitch.h"
28 #include "llvm/Support/Allocator.h"
29 #include "llvm/Support/FileSystem.h"
30 #include "llvm/Support/Host.h"
31 #include "llvm/Support/Path.h"
32 #include "llvm/Support/raw_ostream.h"
34 #if defined(LLVM_ON_UNIX)
37 using namespace clang;
40 ModuleMap::resolveExport(Module *Mod,
41 const Module::UnresolvedExportDecl &Unresolved,
42 bool Complain) const {
43 // We may have just a wildcard.
44 if (Unresolved.Id.empty()) {
45 assert(Unresolved.Wildcard && "Invalid unresolved export");
46 return Module::ExportDecl(nullptr, true);
49 // Resolve the module-id.
50 Module *Context = resolveModuleId(Unresolved.Id, Mod, Complain);
52 return Module::ExportDecl();
54 return Module::ExportDecl(Context, Unresolved.Wildcard);
57 Module *ModuleMap::resolveModuleId(const ModuleId &Id, Module *Mod,
58 bool Complain) const {
59 // Find the starting module.
60 Module *Context = lookupModuleUnqualified(Id[0].first, Mod);
63 Diags.Report(Id[0].second, diag::err_mmap_missing_module_unqualified)
64 << Id[0].first << Mod->getFullModuleName();
69 // Dig into the module path.
70 for (unsigned I = 1, N = Id.size(); I != N; ++I) {
71 Module *Sub = lookupModuleQualified(Id[I].first, Context);
74 Diags.Report(Id[I].second, diag::err_mmap_missing_module_qualified)
75 << Id[I].first << Context->getFullModuleName()
76 << SourceRange(Id[0].second, Id[I-1].second);
87 ModuleMap::ModuleMap(SourceManager &SourceMgr, DiagnosticsEngine &Diags,
88 const LangOptions &LangOpts, const TargetInfo *Target,
89 HeaderSearch &HeaderInfo)
90 : SourceMgr(SourceMgr), Diags(Diags), LangOpts(LangOpts), Target(Target),
91 HeaderInfo(HeaderInfo), BuiltinIncludeDir(nullptr),
92 SourceModule(nullptr), NumCreatedModules(0) {
93 MMapLangOpts.LineComment = true;
96 ModuleMap::~ModuleMap() {
97 for (auto &M : Modules)
101 void ModuleMap::setTarget(const TargetInfo &Target) {
102 assert((!this->Target || this->Target == &Target) &&
103 "Improper target override");
104 this->Target = &Target;
107 /// \brief "Sanitize" a filename so that it can be used as an identifier.
108 static StringRef sanitizeFilenameAsIdentifier(StringRef Name,
109 SmallVectorImpl<char> &Buffer) {
113 if (!isValidIdentifier(Name)) {
114 // If we don't already have something with the form of an identifier,
115 // create a buffer with the sanitized name.
117 if (isDigit(Name[0]))
118 Buffer.push_back('_');
119 Buffer.reserve(Buffer.size() + Name.size());
120 for (unsigned I = 0, N = Name.size(); I != N; ++I) {
121 if (isIdentifierBody(Name[I]))
122 Buffer.push_back(Name[I]);
124 Buffer.push_back('_');
127 Name = StringRef(Buffer.data(), Buffer.size());
130 while (llvm::StringSwitch<bool>(Name)
131 #define KEYWORD(Keyword,Conditions) .Case(#Keyword, true)
132 #define ALIAS(Keyword, AliasOf, Conditions) .Case(Keyword, true)
133 #include "clang/Basic/TokenKinds.def"
135 if (Name.data() != Buffer.data())
136 Buffer.append(Name.begin(), Name.end());
137 Buffer.push_back('_');
138 Name = StringRef(Buffer.data(), Buffer.size());
144 /// \brief Determine whether the given file name is the name of a builtin
145 /// header, supplied by Clang to replace, override, or augment existing system
147 bool ModuleMap::isBuiltinHeader(StringRef FileName) {
148 return llvm::StringSwitch<bool>(FileName)
149 .Case("float.h", true)
150 .Case("iso646.h", true)
151 .Case("limits.h", true)
152 .Case("stdalign.h", true)
153 .Case("stdarg.h", true)
154 .Case("stdatomic.h", true)
155 .Case("stdbool.h", true)
156 .Case("stddef.h", true)
157 .Case("stdint.h", true)
158 .Case("tgmath.h", true)
159 .Case("unwind.h", true)
163 ModuleMap::HeadersMap::iterator
164 ModuleMap::findKnownHeader(const FileEntry *File) {
165 HeadersMap::iterator Known = Headers.find(File);
166 if (HeaderInfo.getHeaderSearchOpts().ImplicitModuleMaps &&
167 Known == Headers.end() && File->getDir() == BuiltinIncludeDir &&
168 ModuleMap::isBuiltinHeader(llvm::sys::path::filename(File->getName()))) {
169 HeaderInfo.loadTopLevelSystemModules();
170 return Headers.find(File);
175 ModuleMap::KnownHeader
176 ModuleMap::findHeaderInUmbrellaDirs(const FileEntry *File,
177 SmallVectorImpl<const DirectoryEntry *> &IntermediateDirs) {
178 if (UmbrellaDirs.empty())
179 return KnownHeader();
181 const DirectoryEntry *Dir = File->getDir();
182 assert(Dir && "file in no directory");
184 // Note: as an egregious but useful hack we use the real path here, because
185 // frameworks moving from top-level frameworks to embedded frameworks tend
186 // to be symlinked from the top-level location to the embedded location,
187 // and we need to resolve lookups as if we had found the embedded location.
188 StringRef DirName = SourceMgr.getFileManager().getCanonicalName(Dir);
190 // Keep walking up the directory hierarchy, looking for a directory with
191 // an umbrella header.
193 auto KnownDir = UmbrellaDirs.find(Dir);
194 if (KnownDir != UmbrellaDirs.end())
195 return KnownHeader(KnownDir->second, NormalHeader);
197 IntermediateDirs.push_back(Dir);
199 // Retrieve our parent path.
200 DirName = llvm::sys::path::parent_path(DirName);
204 // Resolve the parent path to a directory entry.
205 Dir = SourceMgr.getFileManager().getDirectory(DirName);
207 return KnownHeader();
210 static bool violatesPrivateInclude(Module *RequestingModule,
211 const FileEntry *IncFileEnt,
212 ModuleMap::KnownHeader Header) {
214 if (Header.getRole() & ModuleMap::PrivateHeader) {
215 // Check for consistency between the module header role
216 // as obtained from the lookup and as obtained from the module.
217 // This check is not cheap, so enable it only for debugging.
218 bool IsPrivate = false;
219 SmallVectorImpl<Module::Header> *HeaderList[] = {
220 &Header.getModule()->Headers[Module::HK_Private],
221 &Header.getModule()->Headers[Module::HK_PrivateTextual]};
222 for (auto *Hs : HeaderList)
224 std::find_if(Hs->begin(), Hs->end(), [&](const Module::Header &H) {
225 return H.Entry == IncFileEnt;
227 assert(IsPrivate && "inconsistent headers and roles");
230 return !Header.isAccessibleFrom(RequestingModule);
233 static Module *getTopLevelOrNull(Module *M) {
234 return M ? M->getTopLevelModule() : nullptr;
237 void ModuleMap::diagnoseHeaderInclusion(Module *RequestingModule,
238 bool RequestingModuleIsModuleInterface,
239 SourceLocation FilenameLoc,
241 const FileEntry *File) {
242 // No errors for indirect modules. This may be a bit of a problem for modules
243 // with no source files.
244 if (getTopLevelOrNull(RequestingModule) != getTopLevelOrNull(SourceModule))
247 if (RequestingModule)
248 resolveUses(RequestingModule, /*Complain=*/false);
250 bool Excluded = false;
251 Module *Private = nullptr;
252 Module *NotUsed = nullptr;
254 HeadersMap::iterator Known = findKnownHeader(File);
255 if (Known != Headers.end()) {
256 for (const KnownHeader &Header : Known->second) {
257 // Remember private headers for later printing of a diagnostic.
258 if (violatesPrivateInclude(RequestingModule, File, Header)) {
259 Private = Header.getModule();
263 // If uses need to be specified explicitly, we are only allowed to return
264 // modules that are explicitly used by the requesting module.
265 if (RequestingModule && LangOpts.ModulesDeclUse &&
266 !RequestingModule->directlyUses(Header.getModule())) {
267 NotUsed = Header.getModule();
271 // We have found a module that we can happily use.
278 // We have found a header, but it is private.
280 Diags.Report(FilenameLoc, diag::warn_use_of_private_header_outside_module)
285 // We have found a module, but we don't use it.
287 Diags.Report(FilenameLoc, diag::err_undeclared_use_of_module)
288 << RequestingModule->getFullModuleName() << Filename;
292 if (Excluded || isHeaderInUmbrellaDirs(File))
295 // At this point, only non-modular includes remain.
297 if (LangOpts.ModulesStrictDeclUse) {
298 Diags.Report(FilenameLoc, diag::err_undeclared_use_of_module)
299 << RequestingModule->getFullModuleName() << Filename;
300 } else if (RequestingModule && RequestingModuleIsModuleInterface &&
301 LangOpts.isCompilingModule()) {
302 // Do not diagnose when we are not compiling a module.
303 diag::kind DiagID = RequestingModule->getTopLevelModule()->IsFramework ?
304 diag::warn_non_modular_include_in_framework_module :
305 diag::warn_non_modular_include_in_module;
306 Diags.Report(FilenameLoc, DiagID) << RequestingModule->getFullModuleName()
311 static bool isBetterKnownHeader(const ModuleMap::KnownHeader &New,
312 const ModuleMap::KnownHeader &Old) {
313 // Prefer available modules.
314 if (New.getModule()->isAvailable() && !Old.getModule()->isAvailable())
317 // Prefer a public header over a private header.
318 if ((New.getRole() & ModuleMap::PrivateHeader) !=
319 (Old.getRole() & ModuleMap::PrivateHeader))
320 return !(New.getRole() & ModuleMap::PrivateHeader);
322 // Prefer a non-textual header over a textual header.
323 if ((New.getRole() & ModuleMap::TextualHeader) !=
324 (Old.getRole() & ModuleMap::TextualHeader))
325 return !(New.getRole() & ModuleMap::TextualHeader);
327 // Don't have a reason to choose between these. Just keep the first one.
331 ModuleMap::KnownHeader ModuleMap::findModuleForHeader(const FileEntry *File,
333 auto MakeResult = [&](ModuleMap::KnownHeader R) -> ModuleMap::KnownHeader {
334 if (!AllowTextual && R.getRole() & ModuleMap::TextualHeader)
335 return ModuleMap::KnownHeader();
339 HeadersMap::iterator Known = findKnownHeader(File);
340 if (Known != Headers.end()) {
341 ModuleMap::KnownHeader Result;
342 // Iterate over all modules that 'File' is part of to find the best fit.
343 for (KnownHeader &H : Known->second) {
344 // Prefer a header from the source module over all others.
345 if (H.getModule()->getTopLevelModule() == SourceModule)
346 return MakeResult(H);
347 if (!Result || isBetterKnownHeader(H, Result))
350 return MakeResult(Result);
353 return MakeResult(findOrCreateModuleForHeaderInUmbrellaDir(File));
356 ModuleMap::KnownHeader
357 ModuleMap::findOrCreateModuleForHeaderInUmbrellaDir(const FileEntry *File) {
358 assert(!Headers.count(File) && "already have a module for this header");
360 SmallVector<const DirectoryEntry *, 2> SkippedDirs;
361 KnownHeader H = findHeaderInUmbrellaDirs(File, SkippedDirs);
363 Module *Result = H.getModule();
365 // Search up the module stack until we find a module with an umbrella
367 Module *UmbrellaModule = Result;
368 while (!UmbrellaModule->getUmbrellaDir() && UmbrellaModule->Parent)
369 UmbrellaModule = UmbrellaModule->Parent;
371 if (UmbrellaModule->InferSubmodules) {
372 const FileEntry *UmbrellaModuleMap =
373 getModuleMapFileForUniquing(UmbrellaModule);
375 // Infer submodules for each of the directories we found between
376 // the directory of the umbrella header and the directory where
377 // the actual header is located.
378 bool Explicit = UmbrellaModule->InferExplicitSubmodules;
380 for (unsigned I = SkippedDirs.size(); I != 0; --I) {
381 // Find or create the module that corresponds to this directory name.
382 SmallString<32> NameBuf;
383 StringRef Name = sanitizeFilenameAsIdentifier(
384 llvm::sys::path::stem(SkippedDirs[I-1]->getName()), NameBuf);
385 Result = findOrCreateModule(Name, Result, /*IsFramework=*/false,
387 InferredModuleAllowedBy[Result] = UmbrellaModuleMap;
388 Result->IsInferred = true;
390 // Associate the module and the directory.
391 UmbrellaDirs[SkippedDirs[I-1]] = Result;
393 // If inferred submodules export everything they import, add a
394 // wildcard to the set of exports.
395 if (UmbrellaModule->InferExportWildcard && Result->Exports.empty())
396 Result->Exports.push_back(Module::ExportDecl(nullptr, true));
399 // Infer a submodule with the same name as this header file.
400 SmallString<32> NameBuf;
401 StringRef Name = sanitizeFilenameAsIdentifier(
402 llvm::sys::path::stem(File->getName()), NameBuf);
403 Result = findOrCreateModule(Name, Result, /*IsFramework=*/false,
405 InferredModuleAllowedBy[Result] = UmbrellaModuleMap;
406 Result->IsInferred = true;
407 Result->addTopHeader(File);
409 // If inferred submodules export everything they import, add a
410 // wildcard to the set of exports.
411 if (UmbrellaModule->InferExportWildcard && Result->Exports.empty())
412 Result->Exports.push_back(Module::ExportDecl(nullptr, true));
414 // Record each of the directories we stepped through as being part of
415 // the module we found, since the umbrella header covers them all.
416 for (unsigned I = 0, N = SkippedDirs.size(); I != N; ++I)
417 UmbrellaDirs[SkippedDirs[I]] = Result;
420 KnownHeader Header(Result, NormalHeader);
421 Headers[File].push_back(Header);
425 return KnownHeader();
428 ArrayRef<ModuleMap::KnownHeader>
429 ModuleMap::findAllModulesForHeader(const FileEntry *File) const {
430 auto It = Headers.find(File);
431 if (It == Headers.end())
436 bool ModuleMap::isHeaderInUnavailableModule(const FileEntry *Header) const {
437 return isHeaderUnavailableInModule(Header, nullptr);
441 ModuleMap::isHeaderUnavailableInModule(const FileEntry *Header,
442 const Module *RequestingModule) const {
443 HeadersMap::const_iterator Known = Headers.find(Header);
444 if (Known != Headers.end()) {
445 for (SmallVectorImpl<KnownHeader>::const_iterator
446 I = Known->second.begin(),
447 E = Known->second.end();
450 if (I->isAvailable() &&
451 (!RequestingModule ||
452 I->getModule()->isSubModuleOf(RequestingModule))) {
453 // When no requesting module is available, the caller is looking if a
454 // header is part a module by only looking into the module map. This is
455 // done by warn_uncovered_module_header checks; don't consider textual
456 // headers part of it in this mode, otherwise we get misleading warnings
457 // that a umbrella header is not including a textual header.
458 if (!RequestingModule && I->getRole() == ModuleMap::TextualHeader)
466 const DirectoryEntry *Dir = Header->getDir();
467 SmallVector<const DirectoryEntry *, 2> SkippedDirs;
468 StringRef DirName = Dir->getName();
470 auto IsUnavailable = [&](const Module *M) {
471 return !M->isAvailable() && (!RequestingModule ||
472 M->isSubModuleOf(RequestingModule));
475 // Keep walking up the directory hierarchy, looking for a directory with
476 // an umbrella header.
478 llvm::DenseMap<const DirectoryEntry *, Module *>::const_iterator KnownDir
479 = UmbrellaDirs.find(Dir);
480 if (KnownDir != UmbrellaDirs.end()) {
481 Module *Found = KnownDir->second;
482 if (IsUnavailable(Found))
485 // Search up the module stack until we find a module with an umbrella
487 Module *UmbrellaModule = Found;
488 while (!UmbrellaModule->getUmbrellaDir() && UmbrellaModule->Parent)
489 UmbrellaModule = UmbrellaModule->Parent;
491 if (UmbrellaModule->InferSubmodules) {
492 for (unsigned I = SkippedDirs.size(); I != 0; --I) {
493 // Find or create the module that corresponds to this directory name.
494 SmallString<32> NameBuf;
495 StringRef Name = sanitizeFilenameAsIdentifier(
496 llvm::sys::path::stem(SkippedDirs[I-1]->getName()),
498 Found = lookupModuleQualified(Name, Found);
501 if (IsUnavailable(Found))
505 // Infer a submodule with the same name as this header file.
506 SmallString<32> NameBuf;
507 StringRef Name = sanitizeFilenameAsIdentifier(
508 llvm::sys::path::stem(Header->getName()),
510 Found = lookupModuleQualified(Name, Found);
515 return IsUnavailable(Found);
518 SkippedDirs.push_back(Dir);
520 // Retrieve our parent path.
521 DirName = llvm::sys::path::parent_path(DirName);
525 // Resolve the parent path to a directory entry.
526 Dir = SourceMgr.getFileManager().getDirectory(DirName);
532 Module *ModuleMap::findModule(StringRef Name) const {
533 llvm::StringMap<Module *>::const_iterator Known = Modules.find(Name);
534 if (Known != Modules.end())
535 return Known->getValue();
540 Module *ModuleMap::lookupModuleUnqualified(StringRef Name,
541 Module *Context) const {
542 for(; Context; Context = Context->Parent) {
543 if (Module *Sub = lookupModuleQualified(Name, Context))
547 return findModule(Name);
550 Module *ModuleMap::lookupModuleQualified(StringRef Name, Module *Context) const{
552 return findModule(Name);
554 return Context->findSubmodule(Name);
557 std::pair<Module *, bool> ModuleMap::findOrCreateModule(StringRef Name,
561 // Try to find an existing module with this name.
562 if (Module *Sub = lookupModuleQualified(Name, Parent))
563 return std::make_pair(Sub, false);
565 // Create a new module with this name.
566 Module *Result = new Module(Name, SourceLocation(), Parent, IsFramework,
567 IsExplicit, NumCreatedModules++);
569 if (LangOpts.CurrentModule == Name)
570 SourceModule = Result;
571 Modules[Name] = Result;
573 return std::make_pair(Result, true);
576 Module *ModuleMap::createModuleForInterfaceUnit(SourceLocation Loc,
578 assert(LangOpts.CurrentModule == Name && "module name mismatch");
579 assert(!Modules[Name] && "redefining existing module");
582 new Module(Name, Loc, nullptr, /*IsFramework*/ false,
583 /*IsExplicit*/ false, NumCreatedModules++);
584 Modules[Name] = SourceModule = Result;
586 // Mark the main source file as being within the newly-created module so that
587 // declarations and macros are properly visibility-restricted to it.
588 auto *MainFile = SourceMgr.getFileEntryForID(SourceMgr.getMainFileID());
589 assert(MainFile && "no input file for module interface");
590 Headers[MainFile].push_back(KnownHeader(Result, PrivateHeader));
595 /// \brief For a framework module, infer the framework against which we
597 static void inferFrameworkLink(Module *Mod, const DirectoryEntry *FrameworkDir,
598 FileManager &FileMgr) {
599 assert(Mod->IsFramework && "Can only infer linking for framework modules");
600 assert(!Mod->isSubFramework() &&
601 "Can only infer linking for top-level frameworks");
603 SmallString<128> LibName;
604 LibName += FrameworkDir->getName();
605 llvm::sys::path::append(LibName, Mod->Name);
607 // The library name of a framework has more than one possible extension since
608 // the introduction of the text-based dynamic library format. We need to check
609 // for both before we give up.
610 for (const char *extension : {"", ".tbd"}) {
611 llvm::sys::path::replace_extension(LibName, extension);
612 if (FileMgr.getFile(LibName)) {
613 Mod->LinkLibraries.push_back(Module::LinkLibrary(Mod->Name,
614 /*IsFramework=*/true));
620 Module *ModuleMap::inferFrameworkModule(const DirectoryEntry *FrameworkDir,
621 bool IsSystem, Module *Parent) {
623 Attrs.IsSystem = IsSystem;
624 return inferFrameworkModule(FrameworkDir, Attrs, Parent);
627 Module *ModuleMap::inferFrameworkModule(const DirectoryEntry *FrameworkDir,
628 Attributes Attrs, Module *Parent) {
629 // Note: as an egregious but useful hack we use the real path here, because
630 // we might be looking at an embedded framework that symlinks out to a
631 // top-level framework, and we need to infer as if we were naming the
632 // top-level framework.
633 StringRef FrameworkDirName =
634 SourceMgr.getFileManager().getCanonicalName(FrameworkDir);
636 // In case this is a case-insensitive filesystem, use the canonical
637 // directory name as the ModuleName, since modules are case-sensitive.
638 // FIXME: we should be able to give a fix-it hint for the correct spelling.
639 SmallString<32> ModuleNameStorage;
640 StringRef ModuleName = sanitizeFilenameAsIdentifier(
641 llvm::sys::path::stem(FrameworkDirName), ModuleNameStorage);
643 // Check whether we've already found this module.
644 if (Module *Mod = lookupModuleQualified(ModuleName, Parent))
647 FileManager &FileMgr = SourceMgr.getFileManager();
649 // If the framework has a parent path from which we're allowed to infer
650 // a framework module, do so.
651 const FileEntry *ModuleMapFile = nullptr;
653 // Determine whether we're allowed to infer a module map.
654 bool canInfer = false;
655 if (llvm::sys::path::has_parent_path(FrameworkDirName)) {
656 // Figure out the parent path.
657 StringRef Parent = llvm::sys::path::parent_path(FrameworkDirName);
658 if (const DirectoryEntry *ParentDir = FileMgr.getDirectory(Parent)) {
659 // Check whether we have already looked into the parent directory
661 llvm::DenseMap<const DirectoryEntry *, InferredDirectory>::const_iterator
662 inferred = InferredDirectories.find(ParentDir);
663 if (inferred == InferredDirectories.end()) {
664 // We haven't looked here before. Load a module map, if there is
666 bool IsFrameworkDir = Parent.endswith(".framework");
667 if (const FileEntry *ModMapFile =
668 HeaderInfo.lookupModuleMapFile(ParentDir, IsFrameworkDir)) {
669 parseModuleMapFile(ModMapFile, Attrs.IsSystem, ParentDir);
670 inferred = InferredDirectories.find(ParentDir);
673 if (inferred == InferredDirectories.end())
674 inferred = InferredDirectories.insert(
675 std::make_pair(ParentDir, InferredDirectory())).first;
678 if (inferred->second.InferModules) {
679 // We're allowed to infer for this directory, but make sure it's okay
680 // to infer this particular module.
681 StringRef Name = llvm::sys::path::stem(FrameworkDirName);
682 canInfer = std::find(inferred->second.ExcludedModules.begin(),
683 inferred->second.ExcludedModules.end(),
684 Name) == inferred->second.ExcludedModules.end();
686 Attrs.IsSystem |= inferred->second.Attrs.IsSystem;
687 Attrs.IsExternC |= inferred->second.Attrs.IsExternC;
688 Attrs.IsExhaustive |= inferred->second.Attrs.IsExhaustive;
689 Attrs.NoUndeclaredIncludes |=
690 inferred->second.Attrs.NoUndeclaredIncludes;
691 ModuleMapFile = inferred->second.ModuleMapFile;
696 // If we're not allowed to infer a framework module, don't.
700 ModuleMapFile = getModuleMapFileForUniquing(Parent);
703 // Look for an umbrella header.
704 SmallString<128> UmbrellaName = StringRef(FrameworkDir->getName());
705 llvm::sys::path::append(UmbrellaName, "Headers", ModuleName + ".h");
706 const FileEntry *UmbrellaHeader = FileMgr.getFile(UmbrellaName);
708 // FIXME: If there's no umbrella header, we could probably scan the
709 // framework to load *everything*. But, it's not clear that this is a good
714 Module *Result = new Module(ModuleName, SourceLocation(), Parent,
715 /*IsFramework=*/true, /*IsExplicit=*/false,
716 NumCreatedModules++);
717 InferredModuleAllowedBy[Result] = ModuleMapFile;
718 Result->IsInferred = true;
720 if (LangOpts.CurrentModule == ModuleName)
721 SourceModule = Result;
722 Modules[ModuleName] = Result;
725 Result->IsSystem |= Attrs.IsSystem;
726 Result->IsExternC |= Attrs.IsExternC;
727 Result->ConfigMacrosExhaustive |= Attrs.IsExhaustive;
728 Result->NoUndeclaredIncludes |= Attrs.NoUndeclaredIncludes;
729 Result->Directory = FrameworkDir;
731 // umbrella header "umbrella-header-name"
733 // The "Headers/" component of the name is implied because this is
734 // a framework module.
735 setUmbrellaHeader(Result, UmbrellaHeader, ModuleName + ".h");
738 Result->Exports.push_back(Module::ExportDecl(nullptr, true));
740 // module * { export * }
741 Result->InferSubmodules = true;
742 Result->InferExportWildcard = true;
744 // Look for subframeworks.
746 SmallString<128> SubframeworksDirName
747 = StringRef(FrameworkDir->getName());
748 llvm::sys::path::append(SubframeworksDirName, "Frameworks");
749 llvm::sys::path::native(SubframeworksDirName);
750 vfs::FileSystem &FS = *FileMgr.getVirtualFileSystem();
751 for (vfs::directory_iterator Dir = FS.dir_begin(SubframeworksDirName, EC),
753 Dir != DirEnd && !EC; Dir.increment(EC)) {
754 if (!StringRef(Dir->getName()).endswith(".framework"))
757 if (const DirectoryEntry *SubframeworkDir =
758 FileMgr.getDirectory(Dir->getName())) {
759 // Note: as an egregious but useful hack, we use the real path here and
760 // check whether it is actually a subdirectory of the parent directory.
761 // This will not be the case if the 'subframework' is actually a symlink
762 // out to a top-level framework.
763 StringRef SubframeworkDirName = FileMgr.getCanonicalName(SubframeworkDir);
764 bool FoundParent = false;
766 // Get the parent directory name.
768 = llvm::sys::path::parent_path(SubframeworkDirName);
769 if (SubframeworkDirName.empty())
772 if (FileMgr.getDirectory(SubframeworkDirName) == FrameworkDir) {
781 // FIXME: Do we want to warn about subframeworks without umbrella headers?
782 inferFrameworkModule(SubframeworkDir, Attrs, Result);
786 // If the module is a top-level framework, automatically link against the
788 if (!Result->isSubFramework()) {
789 inferFrameworkLink(Result, FrameworkDir, FileMgr);
795 void ModuleMap::setUmbrellaHeader(Module *Mod, const FileEntry *UmbrellaHeader,
796 Twine NameAsWritten) {
797 Headers[UmbrellaHeader].push_back(KnownHeader(Mod, NormalHeader));
798 Mod->Umbrella = UmbrellaHeader;
799 Mod->UmbrellaAsWritten = NameAsWritten.str();
800 UmbrellaDirs[UmbrellaHeader->getDir()] = Mod;
802 // Notify callbacks that we just added a new header.
803 for (const auto &Cb : Callbacks)
804 Cb->moduleMapAddUmbrellaHeader(&SourceMgr.getFileManager(), UmbrellaHeader);
807 void ModuleMap::setUmbrellaDir(Module *Mod, const DirectoryEntry *UmbrellaDir,
808 Twine NameAsWritten) {
809 Mod->Umbrella = UmbrellaDir;
810 Mod->UmbrellaAsWritten = NameAsWritten.str();
811 UmbrellaDirs[UmbrellaDir] = Mod;
814 static Module::HeaderKind headerRoleToKind(ModuleMap::ModuleHeaderRole Role) {
816 default: llvm_unreachable("unknown header role");
817 case ModuleMap::NormalHeader:
818 return Module::HK_Normal;
819 case ModuleMap::PrivateHeader:
820 return Module::HK_Private;
821 case ModuleMap::TextualHeader:
822 return Module::HK_Textual;
823 case ModuleMap::PrivateHeader | ModuleMap::TextualHeader:
824 return Module::HK_PrivateTextual;
828 void ModuleMap::addHeader(Module *Mod, Module::Header Header,
829 ModuleHeaderRole Role, bool Imported) {
830 KnownHeader KH(Mod, Role);
832 // Only add each header to the headers list once.
833 // FIXME: Should we diagnose if a header is listed twice in the
834 // same module definition?
835 auto &HeaderList = Headers[Header.Entry];
836 for (auto H : HeaderList)
840 HeaderList.push_back(KH);
841 Mod->Headers[headerRoleToKind(Role)].push_back(Header);
843 bool isCompilingModuleHeader =
844 LangOpts.isCompilingModule() && Mod->getTopLevelModule() == SourceModule;
845 if (!Imported || isCompilingModuleHeader) {
846 // When we import HeaderFileInfo, the external source is expected to
847 // set the isModuleHeader flag itself.
848 HeaderInfo.MarkFileModuleHeader(Header.Entry, Role,
849 isCompilingModuleHeader);
852 // Notify callbacks that we just added a new header.
853 for (const auto &Cb : Callbacks)
854 Cb->moduleMapAddHeader(Header.Entry->getName());
857 void ModuleMap::excludeHeader(Module *Mod, Module::Header Header) {
858 // Add this as a known header so we won't implicitly add it to any
859 // umbrella directory module.
860 // FIXME: Should we only exclude it from umbrella modules within the
862 (void) Headers[Header.Entry];
864 Mod->Headers[Module::HK_Excluded].push_back(std::move(Header));
868 ModuleMap::getContainingModuleMapFile(const Module *Module) const {
869 if (Module->DefinitionLoc.isInvalid())
872 return SourceMgr.getFileEntryForID(
873 SourceMgr.getFileID(Module->DefinitionLoc));
876 const FileEntry *ModuleMap::getModuleMapFileForUniquing(const Module *M) const {
878 assert(InferredModuleAllowedBy.count(M) && "missing inferred module map");
879 return InferredModuleAllowedBy.find(M)->second;
881 return getContainingModuleMapFile(M);
884 void ModuleMap::setInferredModuleAllowedBy(Module *M, const FileEntry *ModMap) {
885 assert(M->IsInferred && "module not inferred");
886 InferredModuleAllowedBy[M] = ModMap;
889 LLVM_DUMP_METHOD void ModuleMap::dump() {
890 llvm::errs() << "Modules:";
891 for (llvm::StringMap<Module *>::iterator M = Modules.begin(),
892 MEnd = Modules.end();
894 M->getValue()->print(llvm::errs(), 2);
896 llvm::errs() << "Headers:";
897 for (HeadersMap::iterator H = Headers.begin(), HEnd = Headers.end();
899 llvm::errs() << " \"" << H->first->getName() << "\" -> ";
900 for (SmallVectorImpl<KnownHeader>::const_iterator I = H->second.begin(),
903 if (I != H->second.begin())
905 llvm::errs() << I->getModule()->getFullModuleName();
907 llvm::errs() << "\n";
911 bool ModuleMap::resolveExports(Module *Mod, bool Complain) {
912 auto Unresolved = std::move(Mod->UnresolvedExports);
913 Mod->UnresolvedExports.clear();
914 for (auto &UE : Unresolved) {
915 Module::ExportDecl Export = resolveExport(Mod, UE, Complain);
916 if (Export.getPointer() || Export.getInt())
917 Mod->Exports.push_back(Export);
919 Mod->UnresolvedExports.push_back(UE);
921 return !Mod->UnresolvedExports.empty();
924 bool ModuleMap::resolveUses(Module *Mod, bool Complain) {
925 auto Unresolved = std::move(Mod->UnresolvedDirectUses);
926 Mod->UnresolvedDirectUses.clear();
927 for (auto &UDU : Unresolved) {
928 Module *DirectUse = resolveModuleId(UDU, Mod, Complain);
930 Mod->DirectUses.push_back(DirectUse);
932 Mod->UnresolvedDirectUses.push_back(UDU);
934 return !Mod->UnresolvedDirectUses.empty();
937 bool ModuleMap::resolveConflicts(Module *Mod, bool Complain) {
938 auto Unresolved = std::move(Mod->UnresolvedConflicts);
939 Mod->UnresolvedConflicts.clear();
940 for (auto &UC : Unresolved) {
941 if (Module *OtherMod = resolveModuleId(UC.Id, Mod, Complain)) {
942 Module::Conflict Conflict;
943 Conflict.Other = OtherMod;
944 Conflict.Message = UC.Message;
945 Mod->Conflicts.push_back(Conflict);
947 Mod->UnresolvedConflicts.push_back(UC);
949 return !Mod->UnresolvedConflicts.empty();
952 Module *ModuleMap::inferModuleFromLocation(FullSourceLoc Loc) {
956 if (UmbrellaDirs.empty() && Headers.empty())
959 // Use the expansion location to determine which module we're in.
960 FullSourceLoc ExpansionLoc = Loc.getExpansionLoc();
961 if (!ExpansionLoc.isFileID())
964 const SourceManager &SrcMgr = Loc.getManager();
965 FileID ExpansionFileID = ExpansionLoc.getFileID();
967 while (const FileEntry *ExpansionFile
968 = SrcMgr.getFileEntryForID(ExpansionFileID)) {
969 // Find the module that owns this header (if any).
970 if (Module *Mod = findModuleForHeader(ExpansionFile).getModule())
973 // No module owns this header, so look up the inclusion chain to see if
974 // any included header has an associated module.
975 SourceLocation IncludeLoc = SrcMgr.getIncludeLoc(ExpansionFileID);
976 if (IncludeLoc.isInvalid())
979 ExpansionFileID = SrcMgr.getFileID(IncludeLoc);
985 //----------------------------------------------------------------------------//
986 // Module map file parser
987 //----------------------------------------------------------------------------//
990 /// \brief A token in a module map file.
1022 unsigned StringLength;
1023 const char *StringData;
1029 StringData = nullptr;
1032 bool is(TokenKind K) const { return Kind == K; }
1034 SourceLocation getLocation() const {
1035 return SourceLocation::getFromRawEncoding(Location);
1038 StringRef getString() const {
1039 return StringRef(StringData, StringLength);
1043 class ModuleMapParser {
1045 SourceManager &SourceMgr;
1047 /// \brief Default target information, used only for string literal
1049 const TargetInfo *Target;
1051 DiagnosticsEngine &Diags;
1054 /// \brief The current module map file.
1055 const FileEntry *ModuleMapFile;
1057 /// \brief The directory that file names in this module map file should
1058 /// be resolved relative to.
1059 const DirectoryEntry *Directory;
1061 /// \brief The directory containing Clang-supplied headers.
1062 const DirectoryEntry *BuiltinIncludeDir;
1064 /// \brief Whether this module map is in a system header directory.
1067 /// \brief Whether an error occurred.
1070 /// \brief Stores string data for the various string literals referenced
1072 llvm::BumpPtrAllocator StringData;
1074 /// \brief The current token.
1077 /// \brief The active module.
1078 Module *ActiveModule;
1080 /// \brief Whether a module uses the 'requires excluded' hack to mark its
1081 /// contents as 'textual'.
1083 /// On older Darwin SDK versions, 'requires excluded' is used to mark the
1084 /// contents of the Darwin.C.excluded (assert.h) and Tcl.Private modules as
1085 /// non-modular headers. For backwards compatibility, we continue to
1086 /// support this idiom for just these modules, and map the headers to
1087 /// 'textual' to match the original intent.
1088 llvm::SmallPtrSet<Module *, 2> UsesRequiresExcludedHack;
1090 /// \brief Consume the current token and return its location.
1091 SourceLocation consumeToken();
1093 /// \brief Skip tokens until we reach the a token with the given kind
1094 /// (or the end of the file).
1095 void skipUntil(MMToken::TokenKind K);
1097 typedef SmallVector<std::pair<std::string, SourceLocation>, 2> ModuleId;
1098 bool parseModuleId(ModuleId &Id);
1099 void parseModuleDecl();
1100 void parseExternModuleDecl();
1101 void parseRequiresDecl();
1102 void parseHeaderDecl(clang::MMToken::TokenKind,
1103 SourceLocation LeadingLoc);
1104 void parseUmbrellaDirDecl(SourceLocation UmbrellaLoc);
1105 void parseExportDecl();
1106 void parseUseDecl();
1107 void parseLinkDecl();
1108 void parseConfigMacros();
1109 void parseConflict();
1110 void parseInferredModuleDecl(bool Framework, bool Explicit);
1112 typedef ModuleMap::Attributes Attributes;
1113 bool parseOptionalAttributes(Attributes &Attrs);
1116 explicit ModuleMapParser(Lexer &L, SourceManager &SourceMgr,
1117 const TargetInfo *Target,
1118 DiagnosticsEngine &Diags,
1120 const FileEntry *ModuleMapFile,
1121 const DirectoryEntry *Directory,
1122 const DirectoryEntry *BuiltinIncludeDir,
1124 : L(L), SourceMgr(SourceMgr), Target(Target), Diags(Diags), Map(Map),
1125 ModuleMapFile(ModuleMapFile), Directory(Directory),
1126 BuiltinIncludeDir(BuiltinIncludeDir), IsSystem(IsSystem),
1127 HadError(false), ActiveModule(nullptr)
1133 bool parseModuleMapFile();
1137 SourceLocation ModuleMapParser::consumeToken() {
1139 SourceLocation Result = Tok.getLocation();
1143 L.LexFromRawLexer(LToken);
1144 Tok.Location = LToken.getLocation().getRawEncoding();
1145 switch (LToken.getKind()) {
1146 case tok::raw_identifier: {
1147 StringRef RI = LToken.getRawIdentifier();
1148 Tok.StringData = RI.data();
1149 Tok.StringLength = RI.size();
1150 Tok.Kind = llvm::StringSwitch<MMToken::TokenKind>(RI)
1151 .Case("config_macros", MMToken::ConfigMacros)
1152 .Case("conflict", MMToken::Conflict)
1153 .Case("exclude", MMToken::ExcludeKeyword)
1154 .Case("explicit", MMToken::ExplicitKeyword)
1155 .Case("export", MMToken::ExportKeyword)
1156 .Case("extern", MMToken::ExternKeyword)
1157 .Case("framework", MMToken::FrameworkKeyword)
1158 .Case("header", MMToken::HeaderKeyword)
1159 .Case("link", MMToken::LinkKeyword)
1160 .Case("module", MMToken::ModuleKeyword)
1161 .Case("private", MMToken::PrivateKeyword)
1162 .Case("requires", MMToken::RequiresKeyword)
1163 .Case("textual", MMToken::TextualKeyword)
1164 .Case("umbrella", MMToken::UmbrellaKeyword)
1165 .Case("use", MMToken::UseKeyword)
1166 .Default(MMToken::Identifier);
1171 Tok.Kind = MMToken::Comma;
1175 Tok.Kind = MMToken::EndOfFile;
1179 Tok.Kind = MMToken::LBrace;
1183 Tok.Kind = MMToken::LSquare;
1187 Tok.Kind = MMToken::Period;
1191 Tok.Kind = MMToken::RBrace;
1195 Tok.Kind = MMToken::RSquare;
1199 Tok.Kind = MMToken::Star;
1203 Tok.Kind = MMToken::Exclaim;
1206 case tok::string_literal: {
1207 if (LToken.hasUDSuffix()) {
1208 Diags.Report(LToken.getLocation(), diag::err_invalid_string_udl);
1213 // Parse the string literal.
1214 LangOptions LangOpts;
1215 StringLiteralParser StringLiteral(LToken, SourceMgr, LangOpts, *Target);
1216 if (StringLiteral.hadError)
1219 // Copy the string literal into our string data allocator.
1220 unsigned Length = StringLiteral.GetStringLength();
1221 char *Saved = StringData.Allocate<char>(Length + 1);
1222 memcpy(Saved, StringLiteral.GetString().data(), Length);
1226 Tok.Kind = MMToken::StringLiteral;
1227 Tok.StringData = Saved;
1228 Tok.StringLength = Length;
1236 Diags.Report(LToken.getLocation(), diag::err_mmap_unknown_token);
1244 void ModuleMapParser::skipUntil(MMToken::TokenKind K) {
1245 unsigned braceDepth = 0;
1246 unsigned squareDepth = 0;
1249 case MMToken::EndOfFile:
1252 case MMToken::LBrace:
1253 if (Tok.is(K) && braceDepth == 0 && squareDepth == 0)
1259 case MMToken::LSquare:
1260 if (Tok.is(K) && braceDepth == 0 && squareDepth == 0)
1266 case MMToken::RBrace:
1273 case MMToken::RSquare:
1274 if (squareDepth > 0)
1281 if (braceDepth == 0 && squareDepth == 0 && Tok.is(K))
1290 /// \brief Parse a module-id.
1294 /// identifier '.' module-id
1296 /// \returns true if an error occurred, false otherwise.
1297 bool ModuleMapParser::parseModuleId(ModuleId &Id) {
1300 if (Tok.is(MMToken::Identifier) || Tok.is(MMToken::StringLiteral)) {
1301 Id.push_back(std::make_pair(Tok.getString(), Tok.getLocation()));
1304 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_module_name);
1308 if (!Tok.is(MMToken::Period))
1318 /// \brief Enumerates the known attributes.
1319 enum AttributeKind {
1320 /// \brief An unknown attribute.
1322 /// \brief The 'system' attribute.
1324 /// \brief The 'extern_c' attribute.
1326 /// \brief The 'exhaustive' attribute.
1328 /// \brief The 'no_undeclared_includes' attribute.
1329 AT_no_undeclared_includes
1333 /// \brief Parse a module declaration.
1335 /// module-declaration:
1336 /// 'extern' 'module' module-id string-literal
1337 /// 'explicit'[opt] 'framework'[opt] 'module' module-id attributes[opt]
1338 /// { module-member* }
1341 /// requires-declaration
1342 /// header-declaration
1343 /// submodule-declaration
1344 /// export-declaration
1345 /// link-declaration
1347 /// submodule-declaration:
1348 /// module-declaration
1349 /// inferred-submodule-declaration
1350 void ModuleMapParser::parseModuleDecl() {
1351 assert(Tok.is(MMToken::ExplicitKeyword) || Tok.is(MMToken::ModuleKeyword) ||
1352 Tok.is(MMToken::FrameworkKeyword) || Tok.is(MMToken::ExternKeyword));
1353 if (Tok.is(MMToken::ExternKeyword)) {
1354 parseExternModuleDecl();
1358 // Parse 'explicit' or 'framework' keyword, if present.
1359 SourceLocation ExplicitLoc;
1360 bool Explicit = false;
1361 bool Framework = false;
1363 // Parse 'explicit' keyword, if present.
1364 if (Tok.is(MMToken::ExplicitKeyword)) {
1365 ExplicitLoc = consumeToken();
1369 // Parse 'framework' keyword, if present.
1370 if (Tok.is(MMToken::FrameworkKeyword)) {
1375 // Parse 'module' keyword.
1376 if (!Tok.is(MMToken::ModuleKeyword)) {
1377 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_module);
1382 consumeToken(); // 'module' keyword
1384 // If we have a wildcard for the module name, this is an inferred submodule.
1386 if (Tok.is(MMToken::Star))
1387 return parseInferredModuleDecl(Framework, Explicit);
1389 // Parse the module name.
1391 if (parseModuleId(Id)) {
1397 if (Id.size() > 1) {
1398 Diags.Report(Id.front().second, diag::err_mmap_nested_submodule_id)
1399 << SourceRange(Id.front().second, Id.back().second);
1404 } else if (Id.size() == 1 && Explicit) {
1405 // Top-level modules can't be explicit.
1406 Diags.Report(ExplicitLoc, diag::err_mmap_explicit_top_level);
1408 ExplicitLoc = SourceLocation();
1412 Module *PreviousActiveModule = ActiveModule;
1413 if (Id.size() > 1) {
1414 // This module map defines a submodule. Go find the module of which it
1416 ActiveModule = nullptr;
1417 const Module *TopLevelModule = nullptr;
1418 for (unsigned I = 0, N = Id.size() - 1; I != N; ++I) {
1419 if (Module *Next = Map.lookupModuleQualified(Id[I].first, ActiveModule)) {
1421 TopLevelModule = Next;
1422 ActiveModule = Next;
1427 Diags.Report(Id[I].second, diag::err_mmap_missing_module_qualified)
1429 << ActiveModule->getTopLevelModule()->getFullModuleName();
1431 Diags.Report(Id[I].second, diag::err_mmap_expected_module_name);
1437 if (ModuleMapFile != Map.getContainingModuleMapFile(TopLevelModule)) {
1438 assert(ModuleMapFile != Map.getModuleMapFileForUniquing(TopLevelModule) &&
1439 "submodule defined in same file as 'module *' that allowed its "
1440 "top-level module");
1441 Map.addAdditionalModuleMapFile(TopLevelModule, ModuleMapFile);
1445 StringRef ModuleName = Id.back().first;
1446 SourceLocation ModuleNameLoc = Id.back().second;
1448 // Parse the optional attribute list.
1450 if (parseOptionalAttributes(Attrs))
1454 // Parse the opening brace.
1455 if (!Tok.is(MMToken::LBrace)) {
1456 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_lbrace)
1461 SourceLocation LBraceLoc = consumeToken();
1463 // Determine whether this (sub)module has already been defined.
1464 if (Module *Existing = Map.lookupModuleQualified(ModuleName, ActiveModule)) {
1465 if (Existing->DefinitionLoc.isInvalid() && !ActiveModule) {
1466 // Skip the module definition.
1467 skipUntil(MMToken::RBrace);
1468 if (Tok.is(MMToken::RBrace))
1471 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_rbrace);
1472 Diags.Report(LBraceLoc, diag::note_mmap_lbrace_match);
1478 Diags.Report(ModuleNameLoc, diag::err_mmap_module_redefinition)
1480 Diags.Report(Existing->DefinitionLoc, diag::note_mmap_prev_definition);
1482 // Skip the module definition.
1483 skipUntil(MMToken::RBrace);
1484 if (Tok.is(MMToken::RBrace))
1491 // Start defining this module.
1492 ActiveModule = Map.findOrCreateModule(ModuleName, ActiveModule, Framework,
1494 ActiveModule->DefinitionLoc = ModuleNameLoc;
1495 if (Attrs.IsSystem || IsSystem)
1496 ActiveModule->IsSystem = true;
1497 if (Attrs.IsExternC)
1498 ActiveModule->IsExternC = true;
1499 if (Attrs.NoUndeclaredIncludes ||
1500 (!ActiveModule->Parent && ModuleName == "Darwin"))
1501 ActiveModule->NoUndeclaredIncludes = true;
1502 ActiveModule->Directory = Directory;
1504 if (!ActiveModule->Parent) {
1505 StringRef MapFileName(ModuleMapFile->getName());
1506 if (MapFileName.endswith("module.private.modulemap") ||
1507 MapFileName.endswith("module_private.map")) {
1508 // Adding a top-level module from a private modulemap is likely a
1509 // user error; we check to see if there's another top-level module
1510 // defined in the non-private map in the same dir, and if so emit a
1512 for (auto E = Map.module_begin(); E != Map.module_end(); ++E) {
1513 auto const *M = E->getValue();
1515 M->Directory == ActiveModule->Directory &&
1516 M->Name != ActiveModule->Name) {
1517 Diags.Report(ActiveModule->DefinitionLoc,
1518 diag::warn_mmap_mismatched_top_level_private)
1519 << ActiveModule->Name << M->Name;
1520 // The pattern we're defending against here is typically due to
1521 // a module named FooPrivate which is supposed to be a submodule
1522 // called Foo.Private. Emit a fixit in that case.
1524 Diags.Report(ActiveModule->DefinitionLoc,
1525 diag::note_mmap_rename_top_level_private_as_submodule);
1526 D << ActiveModule->Name << M->Name;
1527 StringRef Bad(ActiveModule->Name);
1528 if (Bad.consume_back("Private")) {
1529 SmallString<128> Fixed = Bad;
1530 Fixed.append(".Private");
1531 D << FixItHint::CreateReplacement(ActiveModule->DefinitionLoc,
1543 case MMToken::EndOfFile:
1544 case MMToken::RBrace:
1548 case MMToken::ConfigMacros:
1549 parseConfigMacros();
1552 case MMToken::Conflict:
1556 case MMToken::ExplicitKeyword:
1557 case MMToken::ExternKeyword:
1558 case MMToken::FrameworkKeyword:
1559 case MMToken::ModuleKeyword:
1563 case MMToken::ExportKeyword:
1567 case MMToken::UseKeyword:
1571 case MMToken::RequiresKeyword:
1572 parseRequiresDecl();
1575 case MMToken::TextualKeyword:
1576 parseHeaderDecl(MMToken::TextualKeyword, consumeToken());
1579 case MMToken::UmbrellaKeyword: {
1580 SourceLocation UmbrellaLoc = consumeToken();
1581 if (Tok.is(MMToken::HeaderKeyword))
1582 parseHeaderDecl(MMToken::UmbrellaKeyword, UmbrellaLoc);
1584 parseUmbrellaDirDecl(UmbrellaLoc);
1588 case MMToken::ExcludeKeyword:
1589 parseHeaderDecl(MMToken::ExcludeKeyword, consumeToken());
1592 case MMToken::PrivateKeyword:
1593 parseHeaderDecl(MMToken::PrivateKeyword, consumeToken());
1596 case MMToken::HeaderKeyword:
1597 parseHeaderDecl(MMToken::HeaderKeyword, consumeToken());
1600 case MMToken::LinkKeyword:
1605 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_member);
1611 if (Tok.is(MMToken::RBrace))
1614 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_rbrace);
1615 Diags.Report(LBraceLoc, diag::note_mmap_lbrace_match);
1619 // If the active module is a top-level framework, and there are no link
1620 // libraries, automatically link against the framework.
1621 if (ActiveModule->IsFramework && !ActiveModule->isSubFramework() &&
1622 ActiveModule->LinkLibraries.empty()) {
1623 inferFrameworkLink(ActiveModule, Directory, SourceMgr.getFileManager());
1626 // If the module meets all requirements but is still unavailable, mark the
1627 // whole tree as unavailable to prevent it from building.
1628 if (!ActiveModule->IsAvailable && !ActiveModule->IsMissingRequirement &&
1629 ActiveModule->Parent) {
1630 ActiveModule->getTopLevelModule()->markUnavailable();
1631 ActiveModule->getTopLevelModule()->MissingHeaders.append(
1632 ActiveModule->MissingHeaders.begin(), ActiveModule->MissingHeaders.end());
1635 // We're done parsing this module. Pop back to the previous module.
1636 ActiveModule = PreviousActiveModule;
1639 /// \brief Parse an extern module declaration.
1641 /// extern module-declaration:
1642 /// 'extern' 'module' module-id string-literal
1643 void ModuleMapParser::parseExternModuleDecl() {
1644 assert(Tok.is(MMToken::ExternKeyword));
1645 SourceLocation ExternLoc = consumeToken(); // 'extern' keyword
1647 // Parse 'module' keyword.
1648 if (!Tok.is(MMToken::ModuleKeyword)) {
1649 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_module);
1654 consumeToken(); // 'module' keyword
1656 // Parse the module name.
1658 if (parseModuleId(Id)) {
1663 // Parse the referenced module map file name.
1664 if (!Tok.is(MMToken::StringLiteral)) {
1665 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_mmap_file);
1669 std::string FileName = Tok.getString();
1670 consumeToken(); // filename
1672 StringRef FileNameRef = FileName;
1673 SmallString<128> ModuleMapFileName;
1674 if (llvm::sys::path::is_relative(FileNameRef)) {
1675 ModuleMapFileName += Directory->getName();
1676 llvm::sys::path::append(ModuleMapFileName, FileName);
1677 FileNameRef = ModuleMapFileName;
1679 if (const FileEntry *File = SourceMgr.getFileManager().getFile(FileNameRef))
1680 Map.parseModuleMapFile(
1681 File, /*IsSystem=*/false,
1682 Map.HeaderInfo.getHeaderSearchOpts().ModuleMapFileHomeIsCwd
1684 : File->getDir(), ExternLoc);
1687 /// Whether to add the requirement \p Feature to the module \p M.
1689 /// This preserves backwards compatibility for two hacks in the Darwin system
1690 /// module map files:
1692 /// 1. The use of 'requires excluded' to make headers non-modular, which
1693 /// should really be mapped to 'textual' now that we have this feature. We
1694 /// drop the 'excluded' requirement, and set \p IsRequiresExcludedHack to
1695 /// true. Later, this bit will be used to map all the headers inside this
1696 /// module to 'textual'.
1698 /// This affects Darwin.C.excluded (for assert.h) and Tcl.Private.
1700 /// 2. Removes a bogus cplusplus requirement from IOKit.avc. This requirement
1701 /// was never correct and causes issues now that we check it, so drop it.
1702 static bool shouldAddRequirement(Module *M, StringRef Feature,
1703 bool &IsRequiresExcludedHack) {
1704 if (Feature == "excluded" &&
1705 (M->fullModuleNameIs({"Darwin", "C", "excluded"}) ||
1706 M->fullModuleNameIs({"Tcl", "Private"}))) {
1707 IsRequiresExcludedHack = true;
1709 } else if (Feature == "cplusplus" && M->fullModuleNameIs({"IOKit", "avc"})) {
1716 /// \brief Parse a requires declaration.
1718 /// requires-declaration:
1719 /// 'requires' feature-list
1722 /// feature ',' feature-list
1726 /// '!'[opt] identifier
1727 void ModuleMapParser::parseRequiresDecl() {
1728 assert(Tok.is(MMToken::RequiresKeyword));
1730 // Parse 'requires' keyword.
1733 // Parse the feature-list.
1735 bool RequiredState = true;
1736 if (Tok.is(MMToken::Exclaim)) {
1737 RequiredState = false;
1741 if (!Tok.is(MMToken::Identifier)) {
1742 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_feature);
1747 // Consume the feature name.
1748 std::string Feature = Tok.getString();
1751 bool IsRequiresExcludedHack = false;
1752 bool ShouldAddRequirement =
1753 shouldAddRequirement(ActiveModule, Feature, IsRequiresExcludedHack);
1755 if (IsRequiresExcludedHack)
1756 UsesRequiresExcludedHack.insert(ActiveModule);
1758 if (ShouldAddRequirement) {
1759 // Add this feature.
1760 ActiveModule->addRequirement(Feature, RequiredState, Map.LangOpts,
1764 if (!Tok.is(MMToken::Comma))
1767 // Consume the comma.
1772 /// \brief Append to \p Paths the set of paths needed to get to the
1773 /// subframework in which the given module lives.
1774 static void appendSubframeworkPaths(Module *Mod,
1775 SmallVectorImpl<char> &Path) {
1776 // Collect the framework names from the given module to the top-level module.
1777 SmallVector<StringRef, 2> Paths;
1778 for (; Mod; Mod = Mod->Parent) {
1779 if (Mod->IsFramework)
1780 Paths.push_back(Mod->Name);
1786 // Add Frameworks/Name.framework for each subframework.
1787 for (unsigned I = Paths.size() - 1; I != 0; --I)
1788 llvm::sys::path::append(Path, "Frameworks", Paths[I-1] + ".framework");
1791 /// \brief Parse a header declaration.
1793 /// header-declaration:
1794 /// 'textual'[opt] 'header' string-literal
1795 /// 'private' 'textual'[opt] 'header' string-literal
1796 /// 'exclude' 'header' string-literal
1797 /// 'umbrella' 'header' string-literal
1799 /// FIXME: Support 'private textual header'.
1800 void ModuleMapParser::parseHeaderDecl(MMToken::TokenKind LeadingToken,
1801 SourceLocation LeadingLoc) {
1802 // We've already consumed the first token.
1803 ModuleMap::ModuleHeaderRole Role = ModuleMap::NormalHeader;
1804 if (LeadingToken == MMToken::PrivateKeyword) {
1805 Role = ModuleMap::PrivateHeader;
1806 // 'private' may optionally be followed by 'textual'.
1807 if (Tok.is(MMToken::TextualKeyword)) {
1808 LeadingToken = Tok.Kind;
1813 if (LeadingToken == MMToken::TextualKeyword)
1814 Role = ModuleMap::ModuleHeaderRole(Role | ModuleMap::TextualHeader);
1816 if (UsesRequiresExcludedHack.count(ActiveModule)) {
1817 // Mark this header 'textual' (see doc comment for
1818 // Module::UsesRequiresExcludedHack).
1819 Role = ModuleMap::ModuleHeaderRole(Role | ModuleMap::TextualHeader);
1822 if (LeadingToken != MMToken::HeaderKeyword) {
1823 if (!Tok.is(MMToken::HeaderKeyword)) {
1824 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_header)
1825 << (LeadingToken == MMToken::PrivateKeyword ? "private" :
1826 LeadingToken == MMToken::ExcludeKeyword ? "exclude" :
1827 LeadingToken == MMToken::TextualKeyword ? "textual" : "umbrella");
1833 // Parse the header name.
1834 if (!Tok.is(MMToken::StringLiteral)) {
1835 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_header)
1840 Module::UnresolvedHeaderDirective Header;
1841 Header.FileName = Tok.getString();
1842 Header.FileNameLoc = consumeToken();
1844 // Check whether we already have an umbrella.
1845 if (LeadingToken == MMToken::UmbrellaKeyword && ActiveModule->Umbrella) {
1846 Diags.Report(Header.FileNameLoc, diag::err_mmap_umbrella_clash)
1847 << ActiveModule->getFullModuleName();
1852 // Look for this file.
1853 const FileEntry *File = nullptr;
1854 const FileEntry *BuiltinFile = nullptr;
1855 SmallString<128> RelativePathName;
1856 if (llvm::sys::path::is_absolute(Header.FileName)) {
1857 RelativePathName = Header.FileName;
1858 File = SourceMgr.getFileManager().getFile(RelativePathName);
1860 // Search for the header file within the search directory.
1861 SmallString<128> FullPathName(Directory->getName());
1862 unsigned FullPathLength = FullPathName.size();
1864 if (ActiveModule->isPartOfFramework()) {
1865 appendSubframeworkPaths(ActiveModule, RelativePathName);
1866 unsigned RelativePathLength = RelativePathName.size();
1868 // Check whether this file is in the public headers.
1869 llvm::sys::path::append(RelativePathName, "Headers", Header.FileName);
1870 llvm::sys::path::append(FullPathName, RelativePathName);
1871 File = SourceMgr.getFileManager().getFile(FullPathName);
1873 // Check whether this file is in the private headers.
1875 // Ideally, private modules in the form 'FrameworkName.Private' should
1876 // be defined as 'module FrameworkName.Private', and not as
1877 // 'framework module FrameworkName.Private', since a 'Private.Framework'
1878 // does not usually exist. However, since both are currently widely used
1879 // for private modules, make sure we find the right path in both cases.
1880 RelativePathName.resize(ActiveModule->IsFramework ? 0
1881 : RelativePathLength);
1882 FullPathName.resize(FullPathLength);
1883 llvm::sys::path::append(RelativePathName, "PrivateHeaders",
1885 llvm::sys::path::append(FullPathName, RelativePathName);
1886 File = SourceMgr.getFileManager().getFile(FullPathName);
1889 // Lookup for normal headers.
1890 llvm::sys::path::append(RelativePathName, Header.FileName);
1891 llvm::sys::path::append(FullPathName, RelativePathName);
1892 File = SourceMgr.getFileManager().getFile(FullPathName);
1894 // If this is a system module with a top-level header, this header
1895 // may have a counterpart (or replacement) in the set of headers
1896 // supplied by Clang. Find that builtin header.
1897 if (ActiveModule->IsSystem && LeadingToken != MMToken::UmbrellaKeyword &&
1898 BuiltinIncludeDir && BuiltinIncludeDir != Directory &&
1899 ModuleMap::isBuiltinHeader(Header.FileName)) {
1900 SmallString<128> BuiltinPathName(BuiltinIncludeDir->getName());
1901 llvm::sys::path::append(BuiltinPathName, Header.FileName);
1902 BuiltinFile = SourceMgr.getFileManager().getFile(BuiltinPathName);
1904 // If Clang supplies this header but the underlying system does not,
1905 // just silently swap in our builtin version. Otherwise, we'll end
1906 // up adding both (later).
1907 if (BuiltinFile && !File) {
1909 RelativePathName = BuiltinPathName;
1910 BuiltinFile = nullptr;
1916 // FIXME: We shouldn't be eagerly stat'ing every file named in a module map.
1917 // Come up with a lazy way to do this.
1919 if (LeadingToken == MMToken::UmbrellaKeyword) {
1920 const DirectoryEntry *UmbrellaDir = File->getDir();
1921 if (Module *UmbrellaModule = Map.UmbrellaDirs[UmbrellaDir]) {
1922 Diags.Report(LeadingLoc, diag::err_mmap_umbrella_clash)
1923 << UmbrellaModule->getFullModuleName();
1926 // Record this umbrella header.
1927 Map.setUmbrellaHeader(ActiveModule, File, RelativePathName.str());
1929 } else if (LeadingToken == MMToken::ExcludeKeyword) {
1930 Module::Header H = {RelativePathName.str(), File};
1931 Map.excludeHeader(ActiveModule, H);
1933 // If there is a builtin counterpart to this file, add it now so it can
1934 // wrap the system header.
1936 // FIXME: Taking the name from the FileEntry is unstable and can give
1937 // different results depending on how we've previously named that file
1939 Module::Header H = { BuiltinFile->getName(), BuiltinFile };
1940 Map.addHeader(ActiveModule, H, Role);
1942 // If we have both a builtin and system version of the file, the
1943 // builtin version may want to inject macros into the system header, so
1944 // force the system header to be treated as a textual header in this
1946 Role = ModuleMap::ModuleHeaderRole(Role | ModuleMap::TextualHeader);
1949 // Record this header.
1950 Module::Header H = { RelativePathName.str(), File };
1951 Map.addHeader(ActiveModule, H, Role);
1953 } else if (LeadingToken != MMToken::ExcludeKeyword) {
1954 // Ignore excluded header files. They're optional anyway.
1956 // If we find a module that has a missing header, we mark this module as
1957 // unavailable and store the header directive for displaying diagnostics.
1958 Header.IsUmbrella = LeadingToken == MMToken::UmbrellaKeyword;
1959 ActiveModule->markUnavailable();
1960 ActiveModule->MissingHeaders.push_back(Header);
1964 static int compareModuleHeaders(const Module::Header *A,
1965 const Module::Header *B) {
1966 return A->NameAsWritten.compare(B->NameAsWritten);
1969 /// \brief Parse an umbrella directory declaration.
1971 /// umbrella-dir-declaration:
1972 /// umbrella string-literal
1973 void ModuleMapParser::parseUmbrellaDirDecl(SourceLocation UmbrellaLoc) {
1974 // Parse the directory name.
1975 if (!Tok.is(MMToken::StringLiteral)) {
1976 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_header)
1982 std::string DirName = Tok.getString();
1983 SourceLocation DirNameLoc = consumeToken();
1985 // Check whether we already have an umbrella.
1986 if (ActiveModule->Umbrella) {
1987 Diags.Report(DirNameLoc, diag::err_mmap_umbrella_clash)
1988 << ActiveModule->getFullModuleName();
1993 // Look for this file.
1994 const DirectoryEntry *Dir = nullptr;
1995 if (llvm::sys::path::is_absolute(DirName))
1996 Dir = SourceMgr.getFileManager().getDirectory(DirName);
1998 SmallString<128> PathName;
1999 PathName = Directory->getName();
2000 llvm::sys::path::append(PathName, DirName);
2001 Dir = SourceMgr.getFileManager().getDirectory(PathName);
2005 Diags.Report(DirNameLoc, diag::warn_mmap_umbrella_dir_not_found)
2010 if (UsesRequiresExcludedHack.count(ActiveModule)) {
2011 // Mark this header 'textual' (see doc comment for
2012 // ModuleMapParser::UsesRequiresExcludedHack). Although iterating over the
2013 // directory is relatively expensive, in practice this only applies to the
2014 // uncommonly used Tcl module on Darwin platforms.
2016 SmallVector<Module::Header, 6> Headers;
2017 vfs::FileSystem &FS = *SourceMgr.getFileManager().getVirtualFileSystem();
2018 for (vfs::recursive_directory_iterator I(FS, Dir->getName(), EC), E;
2019 I != E && !EC; I.increment(EC)) {
2020 if (const FileEntry *FE =
2021 SourceMgr.getFileManager().getFile(I->getName())) {
2023 Module::Header Header = {I->getName(), FE};
2024 Headers.push_back(std::move(Header));
2028 // Sort header paths so that the pcm doesn't depend on iteration order.
2029 llvm::array_pod_sort(Headers.begin(), Headers.end(), compareModuleHeaders);
2031 for (auto &Header : Headers)
2032 Map.addHeader(ActiveModule, std::move(Header), ModuleMap::TextualHeader);
2036 if (Module *OwningModule = Map.UmbrellaDirs[Dir]) {
2037 Diags.Report(UmbrellaLoc, diag::err_mmap_umbrella_clash)
2038 << OwningModule->getFullModuleName();
2043 // Record this umbrella directory.
2044 Map.setUmbrellaDir(ActiveModule, Dir, DirName);
2047 /// \brief Parse a module export declaration.
2049 /// export-declaration:
2050 /// 'export' wildcard-module-id
2052 /// wildcard-module-id:
2055 /// identifier '.' wildcard-module-id
2056 void ModuleMapParser::parseExportDecl() {
2057 assert(Tok.is(MMToken::ExportKeyword));
2058 SourceLocation ExportLoc = consumeToken();
2060 // Parse the module-id with an optional wildcard at the end.
2061 ModuleId ParsedModuleId;
2062 bool Wildcard = false;
2064 // FIXME: Support string-literal module names here.
2065 if (Tok.is(MMToken::Identifier)) {
2066 ParsedModuleId.push_back(std::make_pair(Tok.getString(),
2067 Tok.getLocation()));
2070 if (Tok.is(MMToken::Period)) {
2078 if(Tok.is(MMToken::Star)) {
2084 Diags.Report(Tok.getLocation(), diag::err_mmap_module_id);
2089 Module::UnresolvedExportDecl Unresolved = {
2090 ExportLoc, ParsedModuleId, Wildcard
2092 ActiveModule->UnresolvedExports.push_back(Unresolved);
2095 /// \brief Parse a module use declaration.
2097 /// use-declaration:
2098 /// 'use' wildcard-module-id
2099 void ModuleMapParser::parseUseDecl() {
2100 assert(Tok.is(MMToken::UseKeyword));
2101 auto KWLoc = consumeToken();
2102 // Parse the module-id.
2103 ModuleId ParsedModuleId;
2104 parseModuleId(ParsedModuleId);
2106 if (ActiveModule->Parent)
2107 Diags.Report(KWLoc, diag::err_mmap_use_decl_submodule);
2109 ActiveModule->UnresolvedDirectUses.push_back(ParsedModuleId);
2112 /// \brief Parse a link declaration.
2114 /// module-declaration:
2115 /// 'link' 'framework'[opt] string-literal
2116 void ModuleMapParser::parseLinkDecl() {
2117 assert(Tok.is(MMToken::LinkKeyword));
2118 SourceLocation LinkLoc = consumeToken();
2120 // Parse the optional 'framework' keyword.
2121 bool IsFramework = false;
2122 if (Tok.is(MMToken::FrameworkKeyword)) {
2127 // Parse the library name
2128 if (!Tok.is(MMToken::StringLiteral)) {
2129 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_library_name)
2130 << IsFramework << SourceRange(LinkLoc);
2135 std::string LibraryName = Tok.getString();
2137 ActiveModule->LinkLibraries.push_back(Module::LinkLibrary(LibraryName,
2141 /// \brief Parse a configuration macro declaration.
2143 /// module-declaration:
2144 /// 'config_macros' attributes[opt] config-macro-list?
2146 /// config-macro-list:
2147 /// identifier (',' identifier)?
2148 void ModuleMapParser::parseConfigMacros() {
2149 assert(Tok.is(MMToken::ConfigMacros));
2150 SourceLocation ConfigMacrosLoc = consumeToken();
2152 // Only top-level modules can have configuration macros.
2153 if (ActiveModule->Parent) {
2154 Diags.Report(ConfigMacrosLoc, diag::err_mmap_config_macro_submodule);
2157 // Parse the optional attributes.
2159 if (parseOptionalAttributes(Attrs))
2162 if (Attrs.IsExhaustive && !ActiveModule->Parent) {
2163 ActiveModule->ConfigMacrosExhaustive = true;
2166 // If we don't have an identifier, we're done.
2167 // FIXME: Support macros with the same name as a keyword here.
2168 if (!Tok.is(MMToken::Identifier))
2171 // Consume the first identifier.
2172 if (!ActiveModule->Parent) {
2173 ActiveModule->ConfigMacros.push_back(Tok.getString().str());
2178 // If there's a comma, consume it.
2179 if (!Tok.is(MMToken::Comma))
2183 // We expect to see a macro name here.
2184 // FIXME: Support macros with the same name as a keyword here.
2185 if (!Tok.is(MMToken::Identifier)) {
2186 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_config_macro);
2190 // Consume the macro name.
2191 if (!ActiveModule->Parent) {
2192 ActiveModule->ConfigMacros.push_back(Tok.getString().str());
2198 /// \brief Format a module-id into a string.
2199 static std::string formatModuleId(const ModuleId &Id) {
2202 llvm::raw_string_ostream OS(result);
2204 for (unsigned I = 0, N = Id.size(); I != N; ++I) {
2214 /// \brief Parse a conflict declaration.
2216 /// module-declaration:
2217 /// 'conflict' module-id ',' string-literal
2218 void ModuleMapParser::parseConflict() {
2219 assert(Tok.is(MMToken::Conflict));
2220 SourceLocation ConflictLoc = consumeToken();
2221 Module::UnresolvedConflict Conflict;
2223 // Parse the module-id.
2224 if (parseModuleId(Conflict.Id))
2228 if (!Tok.is(MMToken::Comma)) {
2229 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_conflicts_comma)
2230 << SourceRange(ConflictLoc);
2235 // Parse the message.
2236 if (!Tok.is(MMToken::StringLiteral)) {
2237 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_conflicts_message)
2238 << formatModuleId(Conflict.Id);
2241 Conflict.Message = Tok.getString().str();
2244 // Add this unresolved conflict.
2245 ActiveModule->UnresolvedConflicts.push_back(Conflict);
2248 /// \brief Parse an inferred module declaration (wildcard modules).
2250 /// module-declaration:
2251 /// 'explicit'[opt] 'framework'[opt] 'module' * attributes[opt]
2252 /// { inferred-module-member* }
2254 /// inferred-module-member:
2256 /// 'exclude' identifier
2257 void ModuleMapParser::parseInferredModuleDecl(bool Framework, bool Explicit) {
2258 assert(Tok.is(MMToken::Star));
2259 SourceLocation StarLoc = consumeToken();
2260 bool Failed = false;
2262 // Inferred modules must be submodules.
2263 if (!ActiveModule && !Framework) {
2264 Diags.Report(StarLoc, diag::err_mmap_top_level_inferred_submodule);
2269 // Inferred modules must have umbrella directories.
2270 if (!Failed && ActiveModule->IsAvailable &&
2271 !ActiveModule->getUmbrellaDir()) {
2272 Diags.Report(StarLoc, diag::err_mmap_inferred_no_umbrella);
2276 // Check for redefinition of an inferred module.
2277 if (!Failed && ActiveModule->InferSubmodules) {
2278 Diags.Report(StarLoc, diag::err_mmap_inferred_redef);
2279 if (ActiveModule->InferredSubmoduleLoc.isValid())
2280 Diags.Report(ActiveModule->InferredSubmoduleLoc,
2281 diag::note_mmap_prev_definition);
2285 // Check for the 'framework' keyword, which is not permitted here.
2287 Diags.Report(StarLoc, diag::err_mmap_inferred_framework_submodule);
2290 } else if (Explicit) {
2291 Diags.Report(StarLoc, diag::err_mmap_explicit_inferred_framework);
2295 // If there were any problems with this inferred submodule, skip its body.
2297 if (Tok.is(MMToken::LBrace)) {
2299 skipUntil(MMToken::RBrace);
2300 if (Tok.is(MMToken::RBrace))
2307 // Parse optional attributes.
2309 if (parseOptionalAttributes(Attrs))
2313 // Note that we have an inferred submodule.
2314 ActiveModule->InferSubmodules = true;
2315 ActiveModule->InferredSubmoduleLoc = StarLoc;
2316 ActiveModule->InferExplicitSubmodules = Explicit;
2318 // We'll be inferring framework modules for this directory.
2319 Map.InferredDirectories[Directory].InferModules = true;
2320 Map.InferredDirectories[Directory].Attrs = Attrs;
2321 Map.InferredDirectories[Directory].ModuleMapFile = ModuleMapFile;
2322 // FIXME: Handle the 'framework' keyword.
2325 // Parse the opening brace.
2326 if (!Tok.is(MMToken::LBrace)) {
2327 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_lbrace_wildcard);
2331 SourceLocation LBraceLoc = consumeToken();
2333 // Parse the body of the inferred submodule.
2337 case MMToken::EndOfFile:
2338 case MMToken::RBrace:
2342 case MMToken::ExcludeKeyword: {
2344 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_inferred_member)
2345 << (ActiveModule != nullptr);
2351 // FIXME: Support string-literal module names here.
2352 if (!Tok.is(MMToken::Identifier)) {
2353 Diags.Report(Tok.getLocation(), diag::err_mmap_missing_exclude_name);
2357 Map.InferredDirectories[Directory].ExcludedModules
2358 .push_back(Tok.getString());
2363 case MMToken::ExportKeyword:
2364 if (!ActiveModule) {
2365 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_inferred_member)
2366 << (ActiveModule != nullptr);
2372 if (Tok.is(MMToken::Star))
2373 ActiveModule->InferExportWildcard = true;
2375 Diags.Report(Tok.getLocation(),
2376 diag::err_mmap_expected_export_wildcard);
2380 case MMToken::ExplicitKeyword:
2381 case MMToken::ModuleKeyword:
2382 case MMToken::HeaderKeyword:
2383 case MMToken::PrivateKeyword:
2384 case MMToken::UmbrellaKeyword:
2386 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_inferred_member)
2387 << (ActiveModule != nullptr);
2393 if (Tok.is(MMToken::RBrace))
2396 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_rbrace);
2397 Diags.Report(LBraceLoc, diag::note_mmap_lbrace_match);
2402 /// \brief Parse optional attributes.
2405 /// attribute attributes
2411 /// \param Attrs Will be filled in with the parsed attributes.
2413 /// \returns true if an error occurred, false otherwise.
2414 bool ModuleMapParser::parseOptionalAttributes(Attributes &Attrs) {
2415 bool HadError = false;
2417 while (Tok.is(MMToken::LSquare)) {
2419 SourceLocation LSquareLoc = consumeToken();
2421 // Check whether we have an attribute name here.
2422 if (!Tok.is(MMToken::Identifier)) {
2423 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_attribute);
2424 skipUntil(MMToken::RSquare);
2425 if (Tok.is(MMToken::RSquare))
2430 // Decode the attribute name.
2431 AttributeKind Attribute
2432 = llvm::StringSwitch<AttributeKind>(Tok.getString())
2433 .Case("exhaustive", AT_exhaustive)
2434 .Case("extern_c", AT_extern_c)
2435 .Case("no_undeclared_includes", AT_no_undeclared_includes)
2436 .Case("system", AT_system)
2437 .Default(AT_unknown);
2438 switch (Attribute) {
2440 Diags.Report(Tok.getLocation(), diag::warn_mmap_unknown_attribute)
2445 Attrs.IsSystem = true;
2449 Attrs.IsExternC = true;
2453 Attrs.IsExhaustive = true;
2456 case AT_no_undeclared_includes:
2457 Attrs.NoUndeclaredIncludes = true;
2463 if (!Tok.is(MMToken::RSquare)) {
2464 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_rsquare);
2465 Diags.Report(LSquareLoc, diag::note_mmap_lsquare_match);
2466 skipUntil(MMToken::RSquare);
2470 if (Tok.is(MMToken::RSquare))
2477 /// \brief Parse a module map file.
2479 /// module-map-file:
2480 /// module-declaration*
2481 bool ModuleMapParser::parseModuleMapFile() {
2484 case MMToken::EndOfFile:
2487 case MMToken::ExplicitKeyword:
2488 case MMToken::ExternKeyword:
2489 case MMToken::ModuleKeyword:
2490 case MMToken::FrameworkKeyword:
2494 case MMToken::Comma:
2495 case MMToken::ConfigMacros:
2496 case MMToken::Conflict:
2497 case MMToken::Exclaim:
2498 case MMToken::ExcludeKeyword:
2499 case MMToken::ExportKeyword:
2500 case MMToken::HeaderKeyword:
2501 case MMToken::Identifier:
2502 case MMToken::LBrace:
2503 case MMToken::LinkKeyword:
2504 case MMToken::LSquare:
2505 case MMToken::Period:
2506 case MMToken::PrivateKeyword:
2507 case MMToken::RBrace:
2508 case MMToken::RSquare:
2509 case MMToken::RequiresKeyword:
2511 case MMToken::StringLiteral:
2512 case MMToken::TextualKeyword:
2513 case MMToken::UmbrellaKeyword:
2514 case MMToken::UseKeyword:
2515 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_module);
2523 bool ModuleMap::parseModuleMapFile(const FileEntry *File, bool IsSystem,
2524 const DirectoryEntry *Dir,
2525 SourceLocation ExternModuleLoc) {
2526 llvm::DenseMap<const FileEntry *, bool>::iterator Known
2527 = ParsedModuleMap.find(File);
2528 if (Known != ParsedModuleMap.end())
2529 return Known->second;
2531 assert(Target && "Missing target information");
2532 auto FileCharacter = IsSystem ? SrcMgr::C_System : SrcMgr::C_User;
2533 FileID ID = SourceMgr.createFileID(File, ExternModuleLoc, FileCharacter);
2534 const llvm::MemoryBuffer *Buffer = SourceMgr.getBuffer(ID);
2536 return ParsedModuleMap[File] = true;
2538 // Parse this module map file.
2539 Lexer L(ID, SourceMgr.getBuffer(ID), SourceMgr, MMapLangOpts);
2540 SourceLocation Start = L.getSourceLocation();
2541 ModuleMapParser Parser(L, SourceMgr, Target, Diags, *this, File, Dir,
2542 BuiltinIncludeDir, IsSystem);
2543 bool Result = Parser.parseModuleMapFile();
2544 ParsedModuleMap[File] = Result;
2546 // Notify callbacks that we parsed it.
2547 for (const auto &Cb : Callbacks)
2548 Cb->moduleMapFileRead(Start, *File, IsSystem);