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>
558 ModuleMap::findOrCreateModule(StringRef Name, Module *Parent, bool IsFramework,
560 // Try to find an existing module with this name.
561 if (Module *Sub = lookupModuleQualified(Name, Parent))
562 return std::make_pair(Sub, false);
564 // Create a new module with this name.
565 Module *Result = new Module(Name, SourceLocation(), Parent,
566 IsFramework, IsExplicit, NumCreatedModules++);
568 if (LangOpts.CurrentModule == Name)
569 SourceModule = Result;
570 Modules[Name] = Result;
572 return std::make_pair(Result, true);
575 Module *ModuleMap::createModuleForInterfaceUnit(SourceLocation Loc,
577 assert(LangOpts.CurrentModule == Name && "module name mismatch");
578 assert(!Modules[Name] && "redefining existing module");
581 new Module(Name, Loc, nullptr, /*IsFramework*/ false,
582 /*IsExplicit*/ false, NumCreatedModules++);
583 Modules[Name] = SourceModule = Result;
585 // Mark the main source file as being within the newly-created module so that
586 // declarations and macros are properly visibility-restricted to it.
587 auto *MainFile = SourceMgr.getFileEntryForID(SourceMgr.getMainFileID());
588 assert(MainFile && "no input file for module interface");
589 Headers[MainFile].push_back(KnownHeader(Result, PrivateHeader));
594 /// \brief For a framework module, infer the framework against which we
596 static void inferFrameworkLink(Module *Mod, const DirectoryEntry *FrameworkDir,
597 FileManager &FileMgr) {
598 assert(Mod->IsFramework && "Can only infer linking for framework modules");
599 assert(!Mod->isSubFramework() &&
600 "Can only infer linking for top-level frameworks");
602 SmallString<128> LibName;
603 LibName += FrameworkDir->getName();
604 llvm::sys::path::append(LibName, Mod->Name);
606 // The library name of a framework has more than one possible extension since
607 // the introduction of the text-based dynamic library format. We need to check
608 // for both before we give up.
609 for (const char *extension : {"", ".tbd"}) {
610 llvm::sys::path::replace_extension(LibName, extension);
611 if (FileMgr.getFile(LibName)) {
612 Mod->LinkLibraries.push_back(Module::LinkLibrary(Mod->Name,
613 /*IsFramework=*/true));
619 Module *ModuleMap::inferFrameworkModule(const DirectoryEntry *FrameworkDir,
620 bool IsSystem, Module *Parent) {
622 Attrs.IsSystem = IsSystem;
623 return inferFrameworkModule(FrameworkDir, Attrs, Parent);
626 Module *ModuleMap::inferFrameworkModule(const DirectoryEntry *FrameworkDir,
627 Attributes Attrs, Module *Parent) {
628 // Note: as an egregious but useful hack we use the real path here, because
629 // we might be looking at an embedded framework that symlinks out to a
630 // top-level framework, and we need to infer as if we were naming the
631 // top-level framework.
632 StringRef FrameworkDirName =
633 SourceMgr.getFileManager().getCanonicalName(FrameworkDir);
635 // In case this is a case-insensitive filesystem, use the canonical
636 // directory name as the ModuleName, since modules are case-sensitive.
637 // FIXME: we should be able to give a fix-it hint for the correct spelling.
638 SmallString<32> ModuleNameStorage;
639 StringRef ModuleName = sanitizeFilenameAsIdentifier(
640 llvm::sys::path::stem(FrameworkDirName), ModuleNameStorage);
642 // Check whether we've already found this module.
643 if (Module *Mod = lookupModuleQualified(ModuleName, Parent))
646 FileManager &FileMgr = SourceMgr.getFileManager();
648 // If the framework has a parent path from which we're allowed to infer
649 // a framework module, do so.
650 const FileEntry *ModuleMapFile = nullptr;
652 // Determine whether we're allowed to infer a module map.
653 bool canInfer = false;
654 if (llvm::sys::path::has_parent_path(FrameworkDirName)) {
655 // Figure out the parent path.
656 StringRef Parent = llvm::sys::path::parent_path(FrameworkDirName);
657 if (const DirectoryEntry *ParentDir = FileMgr.getDirectory(Parent)) {
658 // Check whether we have already looked into the parent directory
660 llvm::DenseMap<const DirectoryEntry *, InferredDirectory>::const_iterator
661 inferred = InferredDirectories.find(ParentDir);
662 if (inferred == InferredDirectories.end()) {
663 // We haven't looked here before. Load a module map, if there is
665 bool IsFrameworkDir = Parent.endswith(".framework");
666 if (const FileEntry *ModMapFile =
667 HeaderInfo.lookupModuleMapFile(ParentDir, IsFrameworkDir)) {
668 parseModuleMapFile(ModMapFile, Attrs.IsSystem, ParentDir);
669 inferred = InferredDirectories.find(ParentDir);
672 if (inferred == InferredDirectories.end())
673 inferred = InferredDirectories.insert(
674 std::make_pair(ParentDir, InferredDirectory())).first;
677 if (inferred->second.InferModules) {
678 // We're allowed to infer for this directory, but make sure it's okay
679 // to infer this particular module.
680 StringRef Name = llvm::sys::path::stem(FrameworkDirName);
681 canInfer = std::find(inferred->second.ExcludedModules.begin(),
682 inferred->second.ExcludedModules.end(),
683 Name) == inferred->second.ExcludedModules.end();
685 Attrs.IsSystem |= inferred->second.Attrs.IsSystem;
686 Attrs.IsExternC |= inferred->second.Attrs.IsExternC;
687 Attrs.IsExhaustive |= inferred->second.Attrs.IsExhaustive;
688 Attrs.NoUndeclaredIncludes |=
689 inferred->second.Attrs.NoUndeclaredIncludes;
690 ModuleMapFile = inferred->second.ModuleMapFile;
695 // If we're not allowed to infer a framework module, don't.
699 ModuleMapFile = getModuleMapFileForUniquing(Parent);
702 // Look for an umbrella header.
703 SmallString<128> UmbrellaName = StringRef(FrameworkDir->getName());
704 llvm::sys::path::append(UmbrellaName, "Headers", ModuleName + ".h");
705 const FileEntry *UmbrellaHeader = FileMgr.getFile(UmbrellaName);
707 // FIXME: If there's no umbrella header, we could probably scan the
708 // framework to load *everything*. But, it's not clear that this is a good
713 Module *Result = new Module(ModuleName, SourceLocation(), Parent,
714 /*IsFramework=*/true, /*IsExplicit=*/false,
715 NumCreatedModules++);
716 InferredModuleAllowedBy[Result] = ModuleMapFile;
717 Result->IsInferred = true;
719 if (LangOpts.CurrentModule == ModuleName)
720 SourceModule = Result;
721 Modules[ModuleName] = Result;
724 Result->IsSystem |= Attrs.IsSystem;
725 Result->IsExternC |= Attrs.IsExternC;
726 Result->ConfigMacrosExhaustive |= Attrs.IsExhaustive;
727 Result->NoUndeclaredIncludes |= Attrs.NoUndeclaredIncludes;
728 Result->Directory = FrameworkDir;
730 // umbrella header "umbrella-header-name"
732 // The "Headers/" component of the name is implied because this is
733 // a framework module.
734 setUmbrellaHeader(Result, UmbrellaHeader, ModuleName + ".h");
737 Result->Exports.push_back(Module::ExportDecl(nullptr, true));
739 // module * { export * }
740 Result->InferSubmodules = true;
741 Result->InferExportWildcard = true;
743 // Look for subframeworks.
745 SmallString<128> SubframeworksDirName
746 = StringRef(FrameworkDir->getName());
747 llvm::sys::path::append(SubframeworksDirName, "Frameworks");
748 llvm::sys::path::native(SubframeworksDirName);
749 vfs::FileSystem &FS = *FileMgr.getVirtualFileSystem();
750 for (vfs::directory_iterator Dir = FS.dir_begin(SubframeworksDirName, EC),
752 Dir != DirEnd && !EC; Dir.increment(EC)) {
753 if (!StringRef(Dir->getName()).endswith(".framework"))
756 if (const DirectoryEntry *SubframeworkDir =
757 FileMgr.getDirectory(Dir->getName())) {
758 // Note: as an egregious but useful hack, we use the real path here and
759 // check whether it is actually a subdirectory of the parent directory.
760 // This will not be the case if the 'subframework' is actually a symlink
761 // out to a top-level framework.
762 StringRef SubframeworkDirName = FileMgr.getCanonicalName(SubframeworkDir);
763 bool FoundParent = false;
765 // Get the parent directory name.
767 = llvm::sys::path::parent_path(SubframeworkDirName);
768 if (SubframeworkDirName.empty())
771 if (FileMgr.getDirectory(SubframeworkDirName) == FrameworkDir) {
780 // FIXME: Do we want to warn about subframeworks without umbrella headers?
781 inferFrameworkModule(SubframeworkDir, Attrs, Result);
785 // If the module is a top-level framework, automatically link against the
787 if (!Result->isSubFramework()) {
788 inferFrameworkLink(Result, FrameworkDir, FileMgr);
794 void ModuleMap::setUmbrellaHeader(Module *Mod, const FileEntry *UmbrellaHeader,
795 Twine NameAsWritten) {
796 Headers[UmbrellaHeader].push_back(KnownHeader(Mod, NormalHeader));
797 Mod->Umbrella = UmbrellaHeader;
798 Mod->UmbrellaAsWritten = NameAsWritten.str();
799 UmbrellaDirs[UmbrellaHeader->getDir()] = Mod;
801 // Notify callbacks that we just added a new header.
802 for (const auto &Cb : Callbacks)
803 Cb->moduleMapAddUmbrellaHeader(&SourceMgr.getFileManager(), UmbrellaHeader);
806 void ModuleMap::setUmbrellaDir(Module *Mod, const DirectoryEntry *UmbrellaDir,
807 Twine NameAsWritten) {
808 Mod->Umbrella = UmbrellaDir;
809 Mod->UmbrellaAsWritten = NameAsWritten.str();
810 UmbrellaDirs[UmbrellaDir] = Mod;
813 static Module::HeaderKind headerRoleToKind(ModuleMap::ModuleHeaderRole Role) {
815 default: llvm_unreachable("unknown header role");
816 case ModuleMap::NormalHeader:
817 return Module::HK_Normal;
818 case ModuleMap::PrivateHeader:
819 return Module::HK_Private;
820 case ModuleMap::TextualHeader:
821 return Module::HK_Textual;
822 case ModuleMap::PrivateHeader | ModuleMap::TextualHeader:
823 return Module::HK_PrivateTextual;
827 void ModuleMap::addHeader(Module *Mod, Module::Header Header,
828 ModuleHeaderRole Role, bool Imported) {
829 KnownHeader KH(Mod, Role);
831 // Only add each header to the headers list once.
832 // FIXME: Should we diagnose if a header is listed twice in the
833 // same module definition?
834 auto &HeaderList = Headers[Header.Entry];
835 for (auto H : HeaderList)
839 HeaderList.push_back(KH);
840 Mod->Headers[headerRoleToKind(Role)].push_back(Header);
842 bool isCompilingModuleHeader =
843 LangOpts.isCompilingModule() && Mod->getTopLevelModule() == SourceModule;
844 if (!Imported || isCompilingModuleHeader) {
845 // When we import HeaderFileInfo, the external source is expected to
846 // set the isModuleHeader flag itself.
847 HeaderInfo.MarkFileModuleHeader(Header.Entry, Role,
848 isCompilingModuleHeader);
851 // Notify callbacks that we just added a new header.
852 for (const auto &Cb : Callbacks)
853 Cb->moduleMapAddHeader(Header.Entry->getName());
856 void ModuleMap::excludeHeader(Module *Mod, Module::Header Header) {
857 // Add this as a known header so we won't implicitly add it to any
858 // umbrella directory module.
859 // FIXME: Should we only exclude it from umbrella modules within the
861 (void) Headers[Header.Entry];
863 Mod->Headers[Module::HK_Excluded].push_back(std::move(Header));
867 ModuleMap::getContainingModuleMapFile(const Module *Module) const {
868 if (Module->DefinitionLoc.isInvalid())
871 return SourceMgr.getFileEntryForID(
872 SourceMgr.getFileID(Module->DefinitionLoc));
875 const FileEntry *ModuleMap::getModuleMapFileForUniquing(const Module *M) const {
877 assert(InferredModuleAllowedBy.count(M) && "missing inferred module map");
878 return InferredModuleAllowedBy.find(M)->second;
880 return getContainingModuleMapFile(M);
883 void ModuleMap::setInferredModuleAllowedBy(Module *M, const FileEntry *ModMap) {
884 assert(M->IsInferred && "module not inferred");
885 InferredModuleAllowedBy[M] = ModMap;
888 LLVM_DUMP_METHOD void ModuleMap::dump() {
889 llvm::errs() << "Modules:";
890 for (llvm::StringMap<Module *>::iterator M = Modules.begin(),
891 MEnd = Modules.end();
893 M->getValue()->print(llvm::errs(), 2);
895 llvm::errs() << "Headers:";
896 for (HeadersMap::iterator H = Headers.begin(), HEnd = Headers.end();
898 llvm::errs() << " \"" << H->first->getName() << "\" -> ";
899 for (SmallVectorImpl<KnownHeader>::const_iterator I = H->second.begin(),
902 if (I != H->second.begin())
904 llvm::errs() << I->getModule()->getFullModuleName();
906 llvm::errs() << "\n";
910 bool ModuleMap::resolveExports(Module *Mod, bool Complain) {
911 auto Unresolved = std::move(Mod->UnresolvedExports);
912 Mod->UnresolvedExports.clear();
913 for (auto &UE : Unresolved) {
914 Module::ExportDecl Export = resolveExport(Mod, UE, Complain);
915 if (Export.getPointer() || Export.getInt())
916 Mod->Exports.push_back(Export);
918 Mod->UnresolvedExports.push_back(UE);
920 return !Mod->UnresolvedExports.empty();
923 bool ModuleMap::resolveUses(Module *Mod, bool Complain) {
924 auto Unresolved = std::move(Mod->UnresolvedDirectUses);
925 Mod->UnresolvedDirectUses.clear();
926 for (auto &UDU : Unresolved) {
927 Module *DirectUse = resolveModuleId(UDU, Mod, Complain);
929 Mod->DirectUses.push_back(DirectUse);
931 Mod->UnresolvedDirectUses.push_back(UDU);
933 return !Mod->UnresolvedDirectUses.empty();
936 bool ModuleMap::resolveConflicts(Module *Mod, bool Complain) {
937 auto Unresolved = std::move(Mod->UnresolvedConflicts);
938 Mod->UnresolvedConflicts.clear();
939 for (auto &UC : Unresolved) {
940 if (Module *OtherMod = resolveModuleId(UC.Id, Mod, Complain)) {
941 Module::Conflict Conflict;
942 Conflict.Other = OtherMod;
943 Conflict.Message = UC.Message;
944 Mod->Conflicts.push_back(Conflict);
946 Mod->UnresolvedConflicts.push_back(UC);
948 return !Mod->UnresolvedConflicts.empty();
951 Module *ModuleMap::inferModuleFromLocation(FullSourceLoc Loc) {
955 if (UmbrellaDirs.empty() && Headers.empty())
958 // Use the expansion location to determine which module we're in.
959 FullSourceLoc ExpansionLoc = Loc.getExpansionLoc();
960 if (!ExpansionLoc.isFileID())
963 const SourceManager &SrcMgr = Loc.getManager();
964 FileID ExpansionFileID = ExpansionLoc.getFileID();
966 while (const FileEntry *ExpansionFile
967 = SrcMgr.getFileEntryForID(ExpansionFileID)) {
968 // Find the module that owns this header (if any).
969 if (Module *Mod = findModuleForHeader(ExpansionFile).getModule())
972 // No module owns this header, so look up the inclusion chain to see if
973 // any included header has an associated module.
974 SourceLocation IncludeLoc = SrcMgr.getIncludeLoc(ExpansionFileID);
975 if (IncludeLoc.isInvalid())
978 ExpansionFileID = SrcMgr.getFileID(IncludeLoc);
984 //----------------------------------------------------------------------------//
985 // Module map file parser
986 //----------------------------------------------------------------------------//
989 /// \brief A token in a module map file.
1021 unsigned StringLength;
1022 const char *StringData;
1028 StringData = nullptr;
1031 bool is(TokenKind K) const { return Kind == K; }
1033 SourceLocation getLocation() const {
1034 return SourceLocation::getFromRawEncoding(Location);
1037 StringRef getString() const {
1038 return StringRef(StringData, StringLength);
1042 class ModuleMapParser {
1044 SourceManager &SourceMgr;
1046 /// \brief Default target information, used only for string literal
1048 const TargetInfo *Target;
1050 DiagnosticsEngine &Diags;
1053 /// \brief The current module map file.
1054 const FileEntry *ModuleMapFile;
1056 /// \brief The directory that file names in this module map file should
1057 /// be resolved relative to.
1058 const DirectoryEntry *Directory;
1060 /// \brief The directory containing Clang-supplied headers.
1061 const DirectoryEntry *BuiltinIncludeDir;
1063 /// \brief Whether this module map is in a system header directory.
1066 /// \brief Whether an error occurred.
1069 /// \brief Stores string data for the various string literals referenced
1071 llvm::BumpPtrAllocator StringData;
1073 /// \brief The current token.
1076 /// \brief The active module.
1077 Module *ActiveModule;
1079 /// \brief Whether a module uses the 'requires excluded' hack to mark its
1080 /// contents as 'textual'.
1082 /// On older Darwin SDK versions, 'requires excluded' is used to mark the
1083 /// contents of the Darwin.C.excluded (assert.h) and Tcl.Private modules as
1084 /// non-modular headers. For backwards compatibility, we continue to
1085 /// support this idiom for just these modules, and map the headers to
1086 /// 'textual' to match the original intent.
1087 llvm::SmallPtrSet<Module *, 2> UsesRequiresExcludedHack;
1089 /// \brief Consume the current token and return its location.
1090 SourceLocation consumeToken();
1092 /// \brief Skip tokens until we reach the a token with the given kind
1093 /// (or the end of the file).
1094 void skipUntil(MMToken::TokenKind K);
1096 typedef SmallVector<std::pair<std::string, SourceLocation>, 2> ModuleId;
1097 bool parseModuleId(ModuleId &Id);
1098 void parseModuleDecl();
1099 void parseExternModuleDecl();
1100 void parseRequiresDecl();
1101 void parseHeaderDecl(clang::MMToken::TokenKind,
1102 SourceLocation LeadingLoc);
1103 void parseUmbrellaDirDecl(SourceLocation UmbrellaLoc);
1104 void parseExportDecl();
1105 void parseUseDecl();
1106 void parseLinkDecl();
1107 void parseConfigMacros();
1108 void parseConflict();
1109 void parseInferredModuleDecl(bool Framework, bool Explicit);
1111 typedef ModuleMap::Attributes Attributes;
1112 bool parseOptionalAttributes(Attributes &Attrs);
1115 explicit ModuleMapParser(Lexer &L, SourceManager &SourceMgr,
1116 const TargetInfo *Target,
1117 DiagnosticsEngine &Diags,
1119 const FileEntry *ModuleMapFile,
1120 const DirectoryEntry *Directory,
1121 const DirectoryEntry *BuiltinIncludeDir,
1123 : L(L), SourceMgr(SourceMgr), Target(Target), Diags(Diags), Map(Map),
1124 ModuleMapFile(ModuleMapFile), Directory(Directory),
1125 BuiltinIncludeDir(BuiltinIncludeDir), IsSystem(IsSystem),
1126 HadError(false), ActiveModule(nullptr)
1132 bool parseModuleMapFile();
1136 SourceLocation ModuleMapParser::consumeToken() {
1138 SourceLocation Result = Tok.getLocation();
1142 L.LexFromRawLexer(LToken);
1143 Tok.Location = LToken.getLocation().getRawEncoding();
1144 switch (LToken.getKind()) {
1145 case tok::raw_identifier: {
1146 StringRef RI = LToken.getRawIdentifier();
1147 Tok.StringData = RI.data();
1148 Tok.StringLength = RI.size();
1149 Tok.Kind = llvm::StringSwitch<MMToken::TokenKind>(RI)
1150 .Case("config_macros", MMToken::ConfigMacros)
1151 .Case("conflict", MMToken::Conflict)
1152 .Case("exclude", MMToken::ExcludeKeyword)
1153 .Case("explicit", MMToken::ExplicitKeyword)
1154 .Case("export", MMToken::ExportKeyword)
1155 .Case("extern", MMToken::ExternKeyword)
1156 .Case("framework", MMToken::FrameworkKeyword)
1157 .Case("header", MMToken::HeaderKeyword)
1158 .Case("link", MMToken::LinkKeyword)
1159 .Case("module", MMToken::ModuleKeyword)
1160 .Case("private", MMToken::PrivateKeyword)
1161 .Case("requires", MMToken::RequiresKeyword)
1162 .Case("textual", MMToken::TextualKeyword)
1163 .Case("umbrella", MMToken::UmbrellaKeyword)
1164 .Case("use", MMToken::UseKeyword)
1165 .Default(MMToken::Identifier);
1170 Tok.Kind = MMToken::Comma;
1174 Tok.Kind = MMToken::EndOfFile;
1178 Tok.Kind = MMToken::LBrace;
1182 Tok.Kind = MMToken::LSquare;
1186 Tok.Kind = MMToken::Period;
1190 Tok.Kind = MMToken::RBrace;
1194 Tok.Kind = MMToken::RSquare;
1198 Tok.Kind = MMToken::Star;
1202 Tok.Kind = MMToken::Exclaim;
1205 case tok::string_literal: {
1206 if (LToken.hasUDSuffix()) {
1207 Diags.Report(LToken.getLocation(), diag::err_invalid_string_udl);
1212 // Parse the string literal.
1213 LangOptions LangOpts;
1214 StringLiteralParser StringLiteral(LToken, SourceMgr, LangOpts, *Target);
1215 if (StringLiteral.hadError)
1218 // Copy the string literal into our string data allocator.
1219 unsigned Length = StringLiteral.GetStringLength();
1220 char *Saved = StringData.Allocate<char>(Length + 1);
1221 memcpy(Saved, StringLiteral.GetString().data(), Length);
1225 Tok.Kind = MMToken::StringLiteral;
1226 Tok.StringData = Saved;
1227 Tok.StringLength = Length;
1235 Diags.Report(LToken.getLocation(), diag::err_mmap_unknown_token);
1243 void ModuleMapParser::skipUntil(MMToken::TokenKind K) {
1244 unsigned braceDepth = 0;
1245 unsigned squareDepth = 0;
1248 case MMToken::EndOfFile:
1251 case MMToken::LBrace:
1252 if (Tok.is(K) && braceDepth == 0 && squareDepth == 0)
1258 case MMToken::LSquare:
1259 if (Tok.is(K) && braceDepth == 0 && squareDepth == 0)
1265 case MMToken::RBrace:
1272 case MMToken::RSquare:
1273 if (squareDepth > 0)
1280 if (braceDepth == 0 && squareDepth == 0 && Tok.is(K))
1289 /// \brief Parse a module-id.
1293 /// identifier '.' module-id
1295 /// \returns true if an error occurred, false otherwise.
1296 bool ModuleMapParser::parseModuleId(ModuleId &Id) {
1299 if (Tok.is(MMToken::Identifier) || Tok.is(MMToken::StringLiteral)) {
1300 Id.push_back(std::make_pair(Tok.getString(), Tok.getLocation()));
1303 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_module_name);
1307 if (!Tok.is(MMToken::Period))
1317 /// \brief Enumerates the known attributes.
1318 enum AttributeKind {
1319 /// \brief An unknown attribute.
1321 /// \brief The 'system' attribute.
1323 /// \brief The 'extern_c' attribute.
1325 /// \brief The 'exhaustive' attribute.
1327 /// \brief The 'no_undeclared_includes' attribute.
1328 AT_no_undeclared_includes
1332 /// \brief Parse a module declaration.
1334 /// module-declaration:
1335 /// 'extern' 'module' module-id string-literal
1336 /// 'explicit'[opt] 'framework'[opt] 'module' module-id attributes[opt]
1337 /// { module-member* }
1340 /// requires-declaration
1341 /// header-declaration
1342 /// submodule-declaration
1343 /// export-declaration
1344 /// link-declaration
1346 /// submodule-declaration:
1347 /// module-declaration
1348 /// inferred-submodule-declaration
1349 void ModuleMapParser::parseModuleDecl() {
1350 assert(Tok.is(MMToken::ExplicitKeyword) || Tok.is(MMToken::ModuleKeyword) ||
1351 Tok.is(MMToken::FrameworkKeyword) || Tok.is(MMToken::ExternKeyword));
1352 if (Tok.is(MMToken::ExternKeyword)) {
1353 parseExternModuleDecl();
1357 // Parse 'explicit' or 'framework' keyword, if present.
1358 SourceLocation ExplicitLoc;
1359 bool Explicit = false;
1360 bool Framework = false;
1362 // Parse 'explicit' keyword, if present.
1363 if (Tok.is(MMToken::ExplicitKeyword)) {
1364 ExplicitLoc = consumeToken();
1368 // Parse 'framework' keyword, if present.
1369 if (Tok.is(MMToken::FrameworkKeyword)) {
1374 // Parse 'module' keyword.
1375 if (!Tok.is(MMToken::ModuleKeyword)) {
1376 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_module);
1381 consumeToken(); // 'module' keyword
1383 // If we have a wildcard for the module name, this is an inferred submodule.
1385 if (Tok.is(MMToken::Star))
1386 return parseInferredModuleDecl(Framework, Explicit);
1388 // Parse the module name.
1390 if (parseModuleId(Id)) {
1396 if (Id.size() > 1) {
1397 Diags.Report(Id.front().second, diag::err_mmap_nested_submodule_id)
1398 << SourceRange(Id.front().second, Id.back().second);
1403 } else if (Id.size() == 1 && Explicit) {
1404 // Top-level modules can't be explicit.
1405 Diags.Report(ExplicitLoc, diag::err_mmap_explicit_top_level);
1407 ExplicitLoc = SourceLocation();
1411 Module *PreviousActiveModule = ActiveModule;
1412 if (Id.size() > 1) {
1413 // This module map defines a submodule. Go find the module of which it
1415 ActiveModule = nullptr;
1416 const Module *TopLevelModule = nullptr;
1417 for (unsigned I = 0, N = Id.size() - 1; I != N; ++I) {
1418 if (Module *Next = Map.lookupModuleQualified(Id[I].first, ActiveModule)) {
1420 TopLevelModule = Next;
1421 ActiveModule = Next;
1426 Diags.Report(Id[I].second, diag::err_mmap_missing_module_qualified)
1428 << ActiveModule->getTopLevelModule()->getFullModuleName();
1430 Diags.Report(Id[I].second, diag::err_mmap_expected_module_name);
1436 if (ModuleMapFile != Map.getContainingModuleMapFile(TopLevelModule)) {
1437 assert(ModuleMapFile != Map.getModuleMapFileForUniquing(TopLevelModule) &&
1438 "submodule defined in same file as 'module *' that allowed its "
1439 "top-level module");
1440 Map.addAdditionalModuleMapFile(TopLevelModule, ModuleMapFile);
1444 StringRef ModuleName = Id.back().first;
1445 SourceLocation ModuleNameLoc = Id.back().second;
1447 // Parse the optional attribute list.
1449 if (parseOptionalAttributes(Attrs))
1453 // Parse the opening brace.
1454 if (!Tok.is(MMToken::LBrace)) {
1455 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_lbrace)
1460 SourceLocation LBraceLoc = consumeToken();
1462 // Determine whether this (sub)module has already been defined.
1463 if (Module *Existing = Map.lookupModuleQualified(ModuleName, ActiveModule)) {
1464 if (Existing->DefinitionLoc.isInvalid() && !ActiveModule) {
1465 // Skip the module definition.
1466 skipUntil(MMToken::RBrace);
1467 if (Tok.is(MMToken::RBrace))
1470 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_rbrace);
1471 Diags.Report(LBraceLoc, diag::note_mmap_lbrace_match);
1477 Diags.Report(ModuleNameLoc, diag::err_mmap_module_redefinition)
1479 Diags.Report(Existing->DefinitionLoc, diag::note_mmap_prev_definition);
1481 // Skip the module definition.
1482 skipUntil(MMToken::RBrace);
1483 if (Tok.is(MMToken::RBrace))
1490 // Start defining this module.
1491 ActiveModule = Map.findOrCreateModule(ModuleName, ActiveModule, Framework,
1493 ActiveModule->DefinitionLoc = ModuleNameLoc;
1494 if (Attrs.IsSystem || IsSystem)
1495 ActiveModule->IsSystem = true;
1496 if (Attrs.IsExternC)
1497 ActiveModule->IsExternC = true;
1498 if (Attrs.NoUndeclaredIncludes ||
1499 (!ActiveModule->Parent && ModuleName == "Darwin"))
1500 ActiveModule->NoUndeclaredIncludes = true;
1501 ActiveModule->Directory = Directory;
1503 if (!ActiveModule->Parent) {
1504 StringRef MapFileName(ModuleMapFile->getName());
1505 if (MapFileName.endswith("module.private.modulemap") ||
1506 MapFileName.endswith("module_private.map")) {
1507 // Adding a top-level module from a private modulemap is likely a
1508 // user error; we check to see if there's another top-level module
1509 // defined in the non-private map in the same dir, and if so emit a
1511 for (auto E = Map.module_begin(); E != Map.module_end(); ++E) {
1512 auto const *M = E->getValue();
1514 M->Directory == ActiveModule->Directory &&
1515 M->Name != ActiveModule->Name) {
1516 Diags.Report(ActiveModule->DefinitionLoc,
1517 diag::warn_mmap_mismatched_top_level_private)
1518 << ActiveModule->Name << M->Name;
1519 // The pattern we're defending against here is typically due to
1520 // a module named FooPrivate which is supposed to be a submodule
1521 // called Foo.Private. Emit a fixit in that case.
1523 Diags.Report(ActiveModule->DefinitionLoc,
1524 diag::note_mmap_rename_top_level_private_as_submodule);
1525 D << ActiveModule->Name << M->Name;
1526 StringRef Bad(ActiveModule->Name);
1527 if (Bad.consume_back("Private")) {
1528 SmallString<128> Fixed = Bad;
1529 Fixed.append(".Private");
1530 D << FixItHint::CreateReplacement(ActiveModule->DefinitionLoc,
1542 case MMToken::EndOfFile:
1543 case MMToken::RBrace:
1547 case MMToken::ConfigMacros:
1548 parseConfigMacros();
1551 case MMToken::Conflict:
1555 case MMToken::ExplicitKeyword:
1556 case MMToken::ExternKeyword:
1557 case MMToken::FrameworkKeyword:
1558 case MMToken::ModuleKeyword:
1562 case MMToken::ExportKeyword:
1566 case MMToken::UseKeyword:
1570 case MMToken::RequiresKeyword:
1571 parseRequiresDecl();
1574 case MMToken::TextualKeyword:
1575 parseHeaderDecl(MMToken::TextualKeyword, consumeToken());
1578 case MMToken::UmbrellaKeyword: {
1579 SourceLocation UmbrellaLoc = consumeToken();
1580 if (Tok.is(MMToken::HeaderKeyword))
1581 parseHeaderDecl(MMToken::UmbrellaKeyword, UmbrellaLoc);
1583 parseUmbrellaDirDecl(UmbrellaLoc);
1587 case MMToken::ExcludeKeyword:
1588 parseHeaderDecl(MMToken::ExcludeKeyword, consumeToken());
1591 case MMToken::PrivateKeyword:
1592 parseHeaderDecl(MMToken::PrivateKeyword, consumeToken());
1595 case MMToken::HeaderKeyword:
1596 parseHeaderDecl(MMToken::HeaderKeyword, consumeToken());
1599 case MMToken::LinkKeyword:
1604 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_member);
1610 if (Tok.is(MMToken::RBrace))
1613 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_rbrace);
1614 Diags.Report(LBraceLoc, diag::note_mmap_lbrace_match);
1618 // If the active module is a top-level framework, and there are no link
1619 // libraries, automatically link against the framework.
1620 if (ActiveModule->IsFramework && !ActiveModule->isSubFramework() &&
1621 ActiveModule->LinkLibraries.empty()) {
1622 inferFrameworkLink(ActiveModule, Directory, SourceMgr.getFileManager());
1625 // If the module meets all requirements but is still unavailable, mark the
1626 // whole tree as unavailable to prevent it from building.
1627 if (!ActiveModule->IsAvailable && !ActiveModule->IsMissingRequirement &&
1628 ActiveModule->Parent) {
1629 ActiveModule->getTopLevelModule()->markUnavailable();
1630 ActiveModule->getTopLevelModule()->MissingHeaders.append(
1631 ActiveModule->MissingHeaders.begin(), ActiveModule->MissingHeaders.end());
1634 // We're done parsing this module. Pop back to the previous module.
1635 ActiveModule = PreviousActiveModule;
1638 /// \brief Parse an extern module declaration.
1640 /// extern module-declaration:
1641 /// 'extern' 'module' module-id string-literal
1642 void ModuleMapParser::parseExternModuleDecl() {
1643 assert(Tok.is(MMToken::ExternKeyword));
1644 SourceLocation ExternLoc = consumeToken(); // 'extern' keyword
1646 // Parse 'module' keyword.
1647 if (!Tok.is(MMToken::ModuleKeyword)) {
1648 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_module);
1653 consumeToken(); // 'module' keyword
1655 // Parse the module name.
1657 if (parseModuleId(Id)) {
1662 // Parse the referenced module map file name.
1663 if (!Tok.is(MMToken::StringLiteral)) {
1664 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_mmap_file);
1668 std::string FileName = Tok.getString();
1669 consumeToken(); // filename
1671 StringRef FileNameRef = FileName;
1672 SmallString<128> ModuleMapFileName;
1673 if (llvm::sys::path::is_relative(FileNameRef)) {
1674 ModuleMapFileName += Directory->getName();
1675 llvm::sys::path::append(ModuleMapFileName, FileName);
1676 FileNameRef = ModuleMapFileName;
1678 if (const FileEntry *File = SourceMgr.getFileManager().getFile(FileNameRef))
1679 Map.parseModuleMapFile(
1680 File, /*IsSystem=*/false,
1681 Map.HeaderInfo.getHeaderSearchOpts().ModuleMapFileHomeIsCwd
1683 : File->getDir(), ExternLoc);
1686 /// Whether to add the requirement \p Feature to the module \p M.
1688 /// This preserves backwards compatibility for two hacks in the Darwin system
1689 /// module map files:
1691 /// 1. The use of 'requires excluded' to make headers non-modular, which
1692 /// should really be mapped to 'textual' now that we have this feature. We
1693 /// drop the 'excluded' requirement, and set \p IsRequiresExcludedHack to
1694 /// true. Later, this bit will be used to map all the headers inside this
1695 /// module to 'textual'.
1697 /// This affects Darwin.C.excluded (for assert.h) and Tcl.Private.
1699 /// 2. Removes a bogus cplusplus requirement from IOKit.avc. This requirement
1700 /// was never correct and causes issues now that we check it, so drop it.
1701 static bool shouldAddRequirement(Module *M, StringRef Feature,
1702 bool &IsRequiresExcludedHack) {
1703 if (Feature == "excluded" &&
1704 (M->fullModuleNameIs({"Darwin", "C", "excluded"}) ||
1705 M->fullModuleNameIs({"Tcl", "Private"}))) {
1706 IsRequiresExcludedHack = true;
1708 } else if (Feature == "cplusplus" && M->fullModuleNameIs({"IOKit", "avc"})) {
1715 /// \brief Parse a requires declaration.
1717 /// requires-declaration:
1718 /// 'requires' feature-list
1721 /// feature ',' feature-list
1725 /// '!'[opt] identifier
1726 void ModuleMapParser::parseRequiresDecl() {
1727 assert(Tok.is(MMToken::RequiresKeyword));
1729 // Parse 'requires' keyword.
1732 // Parse the feature-list.
1734 bool RequiredState = true;
1735 if (Tok.is(MMToken::Exclaim)) {
1736 RequiredState = false;
1740 if (!Tok.is(MMToken::Identifier)) {
1741 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_feature);
1746 // Consume the feature name.
1747 std::string Feature = Tok.getString();
1750 bool IsRequiresExcludedHack = false;
1751 bool ShouldAddRequirement =
1752 shouldAddRequirement(ActiveModule, Feature, IsRequiresExcludedHack);
1754 if (IsRequiresExcludedHack)
1755 UsesRequiresExcludedHack.insert(ActiveModule);
1757 if (ShouldAddRequirement) {
1758 // Add this feature.
1759 ActiveModule->addRequirement(Feature, RequiredState, Map.LangOpts,
1763 if (!Tok.is(MMToken::Comma))
1766 // Consume the comma.
1771 /// \brief Append to \p Paths the set of paths needed to get to the
1772 /// subframework in which the given module lives.
1773 static void appendSubframeworkPaths(Module *Mod,
1774 SmallVectorImpl<char> &Path) {
1775 // Collect the framework names from the given module to the top-level module.
1776 SmallVector<StringRef, 2> Paths;
1777 for (; Mod; Mod = Mod->Parent) {
1778 if (Mod->IsFramework)
1779 Paths.push_back(Mod->Name);
1785 // Add Frameworks/Name.framework for each subframework.
1786 for (unsigned I = Paths.size() - 1; I != 0; --I)
1787 llvm::sys::path::append(Path, "Frameworks", Paths[I-1] + ".framework");
1790 /// \brief Parse a header declaration.
1792 /// header-declaration:
1793 /// 'textual'[opt] 'header' string-literal
1794 /// 'private' 'textual'[opt] 'header' string-literal
1795 /// 'exclude' 'header' string-literal
1796 /// 'umbrella' 'header' string-literal
1798 /// FIXME: Support 'private textual header'.
1799 void ModuleMapParser::parseHeaderDecl(MMToken::TokenKind LeadingToken,
1800 SourceLocation LeadingLoc) {
1801 // We've already consumed the first token.
1802 ModuleMap::ModuleHeaderRole Role = ModuleMap::NormalHeader;
1803 if (LeadingToken == MMToken::PrivateKeyword) {
1804 Role = ModuleMap::PrivateHeader;
1805 // 'private' may optionally be followed by 'textual'.
1806 if (Tok.is(MMToken::TextualKeyword)) {
1807 LeadingToken = Tok.Kind;
1812 if (LeadingToken == MMToken::TextualKeyword)
1813 Role = ModuleMap::ModuleHeaderRole(Role | ModuleMap::TextualHeader);
1815 if (UsesRequiresExcludedHack.count(ActiveModule)) {
1816 // Mark this header 'textual' (see doc comment for
1817 // Module::UsesRequiresExcludedHack).
1818 Role = ModuleMap::ModuleHeaderRole(Role | ModuleMap::TextualHeader);
1821 if (LeadingToken != MMToken::HeaderKeyword) {
1822 if (!Tok.is(MMToken::HeaderKeyword)) {
1823 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_header)
1824 << (LeadingToken == MMToken::PrivateKeyword ? "private" :
1825 LeadingToken == MMToken::ExcludeKeyword ? "exclude" :
1826 LeadingToken == MMToken::TextualKeyword ? "textual" : "umbrella");
1832 // Parse the header name.
1833 if (!Tok.is(MMToken::StringLiteral)) {
1834 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_header)
1839 Module::UnresolvedHeaderDirective Header;
1840 Header.FileName = Tok.getString();
1841 Header.FileNameLoc = consumeToken();
1843 // Check whether we already have an umbrella.
1844 if (LeadingToken == MMToken::UmbrellaKeyword && ActiveModule->Umbrella) {
1845 Diags.Report(Header.FileNameLoc, diag::err_mmap_umbrella_clash)
1846 << ActiveModule->getFullModuleName();
1851 // Look for this file.
1852 const FileEntry *File = nullptr;
1853 const FileEntry *BuiltinFile = nullptr;
1854 SmallString<128> RelativePathName;
1855 if (llvm::sys::path::is_absolute(Header.FileName)) {
1856 RelativePathName = Header.FileName;
1857 File = SourceMgr.getFileManager().getFile(RelativePathName);
1859 // Search for the header file within the search directory.
1860 SmallString<128> FullPathName(Directory->getName());
1861 unsigned FullPathLength = FullPathName.size();
1863 if (ActiveModule->isPartOfFramework()) {
1864 appendSubframeworkPaths(ActiveModule, RelativePathName);
1866 // Check whether this file is in the public headers.
1867 llvm::sys::path::append(RelativePathName, "Headers", Header.FileName);
1868 llvm::sys::path::append(FullPathName, RelativePathName);
1869 File = SourceMgr.getFileManager().getFile(FullPathName);
1872 // Check whether this file is in the private headers.
1873 // FIXME: Should we retain the subframework paths here?
1874 RelativePathName.clear();
1875 FullPathName.resize(FullPathLength);
1876 llvm::sys::path::append(RelativePathName, "PrivateHeaders",
1878 llvm::sys::path::append(FullPathName, RelativePathName);
1879 File = SourceMgr.getFileManager().getFile(FullPathName);
1882 // Lookup for normal headers.
1883 llvm::sys::path::append(RelativePathName, Header.FileName);
1884 llvm::sys::path::append(FullPathName, RelativePathName);
1885 File = SourceMgr.getFileManager().getFile(FullPathName);
1887 // If this is a system module with a top-level header, this header
1888 // may have a counterpart (or replacement) in the set of headers
1889 // supplied by Clang. Find that builtin header.
1890 if (ActiveModule->IsSystem && LeadingToken != MMToken::UmbrellaKeyword &&
1891 BuiltinIncludeDir && BuiltinIncludeDir != Directory &&
1892 ModuleMap::isBuiltinHeader(Header.FileName)) {
1893 SmallString<128> BuiltinPathName(BuiltinIncludeDir->getName());
1894 llvm::sys::path::append(BuiltinPathName, Header.FileName);
1895 BuiltinFile = SourceMgr.getFileManager().getFile(BuiltinPathName);
1897 // If Clang supplies this header but the underlying system does not,
1898 // just silently swap in our builtin version. Otherwise, we'll end
1899 // up adding both (later).
1900 if (BuiltinFile && !File) {
1902 RelativePathName = BuiltinPathName;
1903 BuiltinFile = nullptr;
1909 // FIXME: We shouldn't be eagerly stat'ing every file named in a module map.
1910 // Come up with a lazy way to do this.
1912 if (LeadingToken == MMToken::UmbrellaKeyword) {
1913 const DirectoryEntry *UmbrellaDir = File->getDir();
1914 if (Module *UmbrellaModule = Map.UmbrellaDirs[UmbrellaDir]) {
1915 Diags.Report(LeadingLoc, diag::err_mmap_umbrella_clash)
1916 << UmbrellaModule->getFullModuleName();
1919 // Record this umbrella header.
1920 Map.setUmbrellaHeader(ActiveModule, File, RelativePathName.str());
1922 } else if (LeadingToken == MMToken::ExcludeKeyword) {
1923 Module::Header H = {RelativePathName.str(), File};
1924 Map.excludeHeader(ActiveModule, H);
1926 // If there is a builtin counterpart to this file, add it now so it can
1927 // wrap the system header.
1929 // FIXME: Taking the name from the FileEntry is unstable and can give
1930 // different results depending on how we've previously named that file
1932 Module::Header H = { BuiltinFile->getName(), BuiltinFile };
1933 Map.addHeader(ActiveModule, H, Role);
1935 // If we have both a builtin and system version of the file, the
1936 // builtin version may want to inject macros into the system header, so
1937 // force the system header to be treated as a textual header in this
1939 Role = ModuleMap::ModuleHeaderRole(Role | ModuleMap::TextualHeader);
1942 // Record this header.
1943 Module::Header H = { RelativePathName.str(), File };
1944 Map.addHeader(ActiveModule, H, Role);
1946 } else if (LeadingToken != MMToken::ExcludeKeyword) {
1947 // Ignore excluded header files. They're optional anyway.
1949 // If we find a module that has a missing header, we mark this module as
1950 // unavailable and store the header directive for displaying diagnostics.
1951 Header.IsUmbrella = LeadingToken == MMToken::UmbrellaKeyword;
1952 ActiveModule->markUnavailable();
1953 ActiveModule->MissingHeaders.push_back(Header);
1957 static int compareModuleHeaders(const Module::Header *A,
1958 const Module::Header *B) {
1959 return A->NameAsWritten.compare(B->NameAsWritten);
1962 /// \brief Parse an umbrella directory declaration.
1964 /// umbrella-dir-declaration:
1965 /// umbrella string-literal
1966 void ModuleMapParser::parseUmbrellaDirDecl(SourceLocation UmbrellaLoc) {
1967 // Parse the directory name.
1968 if (!Tok.is(MMToken::StringLiteral)) {
1969 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_header)
1975 std::string DirName = Tok.getString();
1976 SourceLocation DirNameLoc = consumeToken();
1978 // Check whether we already have an umbrella.
1979 if (ActiveModule->Umbrella) {
1980 Diags.Report(DirNameLoc, diag::err_mmap_umbrella_clash)
1981 << ActiveModule->getFullModuleName();
1986 // Look for this file.
1987 const DirectoryEntry *Dir = nullptr;
1988 if (llvm::sys::path::is_absolute(DirName))
1989 Dir = SourceMgr.getFileManager().getDirectory(DirName);
1991 SmallString<128> PathName;
1992 PathName = Directory->getName();
1993 llvm::sys::path::append(PathName, DirName);
1994 Dir = SourceMgr.getFileManager().getDirectory(PathName);
1998 Diags.Report(DirNameLoc, diag::err_mmap_umbrella_dir_not_found)
2004 if (UsesRequiresExcludedHack.count(ActiveModule)) {
2005 // Mark this header 'textual' (see doc comment for
2006 // ModuleMapParser::UsesRequiresExcludedHack). Although iterating over the
2007 // directory is relatively expensive, in practice this only applies to the
2008 // uncommonly used Tcl module on Darwin platforms.
2010 SmallVector<Module::Header, 6> Headers;
2011 vfs::FileSystem &FS = *SourceMgr.getFileManager().getVirtualFileSystem();
2012 for (vfs::recursive_directory_iterator I(FS, Dir->getName(), EC), E;
2013 I != E && !EC; I.increment(EC)) {
2014 if (const FileEntry *FE =
2015 SourceMgr.getFileManager().getFile(I->getName())) {
2017 Module::Header Header = {I->getName(), FE};
2018 Headers.push_back(std::move(Header));
2022 // Sort header paths so that the pcm doesn't depend on iteration order.
2023 llvm::array_pod_sort(Headers.begin(), Headers.end(), compareModuleHeaders);
2025 for (auto &Header : Headers)
2026 Map.addHeader(ActiveModule, std::move(Header), ModuleMap::TextualHeader);
2030 if (Module *OwningModule = Map.UmbrellaDirs[Dir]) {
2031 Diags.Report(UmbrellaLoc, diag::err_mmap_umbrella_clash)
2032 << OwningModule->getFullModuleName();
2037 // Record this umbrella directory.
2038 Map.setUmbrellaDir(ActiveModule, Dir, DirName);
2041 /// \brief Parse a module export declaration.
2043 /// export-declaration:
2044 /// 'export' wildcard-module-id
2046 /// wildcard-module-id:
2049 /// identifier '.' wildcard-module-id
2050 void ModuleMapParser::parseExportDecl() {
2051 assert(Tok.is(MMToken::ExportKeyword));
2052 SourceLocation ExportLoc = consumeToken();
2054 // Parse the module-id with an optional wildcard at the end.
2055 ModuleId ParsedModuleId;
2056 bool Wildcard = false;
2058 // FIXME: Support string-literal module names here.
2059 if (Tok.is(MMToken::Identifier)) {
2060 ParsedModuleId.push_back(std::make_pair(Tok.getString(),
2061 Tok.getLocation()));
2064 if (Tok.is(MMToken::Period)) {
2072 if(Tok.is(MMToken::Star)) {
2078 Diags.Report(Tok.getLocation(), diag::err_mmap_module_id);
2083 Module::UnresolvedExportDecl Unresolved = {
2084 ExportLoc, ParsedModuleId, Wildcard
2086 ActiveModule->UnresolvedExports.push_back(Unresolved);
2089 /// \brief Parse a module use declaration.
2091 /// use-declaration:
2092 /// 'use' wildcard-module-id
2093 void ModuleMapParser::parseUseDecl() {
2094 assert(Tok.is(MMToken::UseKeyword));
2095 auto KWLoc = consumeToken();
2096 // Parse the module-id.
2097 ModuleId ParsedModuleId;
2098 parseModuleId(ParsedModuleId);
2100 if (ActiveModule->Parent)
2101 Diags.Report(KWLoc, diag::err_mmap_use_decl_submodule);
2103 ActiveModule->UnresolvedDirectUses.push_back(ParsedModuleId);
2106 /// \brief Parse a link declaration.
2108 /// module-declaration:
2109 /// 'link' 'framework'[opt] string-literal
2110 void ModuleMapParser::parseLinkDecl() {
2111 assert(Tok.is(MMToken::LinkKeyword));
2112 SourceLocation LinkLoc = consumeToken();
2114 // Parse the optional 'framework' keyword.
2115 bool IsFramework = false;
2116 if (Tok.is(MMToken::FrameworkKeyword)) {
2121 // Parse the library name
2122 if (!Tok.is(MMToken::StringLiteral)) {
2123 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_library_name)
2124 << IsFramework << SourceRange(LinkLoc);
2129 std::string LibraryName = Tok.getString();
2131 ActiveModule->LinkLibraries.push_back(Module::LinkLibrary(LibraryName,
2135 /// \brief Parse a configuration macro declaration.
2137 /// module-declaration:
2138 /// 'config_macros' attributes[opt] config-macro-list?
2140 /// config-macro-list:
2141 /// identifier (',' identifier)?
2142 void ModuleMapParser::parseConfigMacros() {
2143 assert(Tok.is(MMToken::ConfigMacros));
2144 SourceLocation ConfigMacrosLoc = consumeToken();
2146 // Only top-level modules can have configuration macros.
2147 if (ActiveModule->Parent) {
2148 Diags.Report(ConfigMacrosLoc, diag::err_mmap_config_macro_submodule);
2151 // Parse the optional attributes.
2153 if (parseOptionalAttributes(Attrs))
2156 if (Attrs.IsExhaustive && !ActiveModule->Parent) {
2157 ActiveModule->ConfigMacrosExhaustive = true;
2160 // If we don't have an identifier, we're done.
2161 // FIXME: Support macros with the same name as a keyword here.
2162 if (!Tok.is(MMToken::Identifier))
2165 // Consume the first identifier.
2166 if (!ActiveModule->Parent) {
2167 ActiveModule->ConfigMacros.push_back(Tok.getString().str());
2172 // If there's a comma, consume it.
2173 if (!Tok.is(MMToken::Comma))
2177 // We expect to see a macro name here.
2178 // FIXME: Support macros with the same name as a keyword here.
2179 if (!Tok.is(MMToken::Identifier)) {
2180 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_config_macro);
2184 // Consume the macro name.
2185 if (!ActiveModule->Parent) {
2186 ActiveModule->ConfigMacros.push_back(Tok.getString().str());
2192 /// \brief Format a module-id into a string.
2193 static std::string formatModuleId(const ModuleId &Id) {
2196 llvm::raw_string_ostream OS(result);
2198 for (unsigned I = 0, N = Id.size(); I != N; ++I) {
2208 /// \brief Parse a conflict declaration.
2210 /// module-declaration:
2211 /// 'conflict' module-id ',' string-literal
2212 void ModuleMapParser::parseConflict() {
2213 assert(Tok.is(MMToken::Conflict));
2214 SourceLocation ConflictLoc = consumeToken();
2215 Module::UnresolvedConflict Conflict;
2217 // Parse the module-id.
2218 if (parseModuleId(Conflict.Id))
2222 if (!Tok.is(MMToken::Comma)) {
2223 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_conflicts_comma)
2224 << SourceRange(ConflictLoc);
2229 // Parse the message.
2230 if (!Tok.is(MMToken::StringLiteral)) {
2231 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_conflicts_message)
2232 << formatModuleId(Conflict.Id);
2235 Conflict.Message = Tok.getString().str();
2238 // Add this unresolved conflict.
2239 ActiveModule->UnresolvedConflicts.push_back(Conflict);
2242 /// \brief Parse an inferred module declaration (wildcard modules).
2244 /// module-declaration:
2245 /// 'explicit'[opt] 'framework'[opt] 'module' * attributes[opt]
2246 /// { inferred-module-member* }
2248 /// inferred-module-member:
2250 /// 'exclude' identifier
2251 void ModuleMapParser::parseInferredModuleDecl(bool Framework, bool Explicit) {
2252 assert(Tok.is(MMToken::Star));
2253 SourceLocation StarLoc = consumeToken();
2254 bool Failed = false;
2256 // Inferred modules must be submodules.
2257 if (!ActiveModule && !Framework) {
2258 Diags.Report(StarLoc, diag::err_mmap_top_level_inferred_submodule);
2263 // Inferred modules must have umbrella directories.
2264 if (!Failed && ActiveModule->IsAvailable &&
2265 !ActiveModule->getUmbrellaDir()) {
2266 Diags.Report(StarLoc, diag::err_mmap_inferred_no_umbrella);
2270 // Check for redefinition of an inferred module.
2271 if (!Failed && ActiveModule->InferSubmodules) {
2272 Diags.Report(StarLoc, diag::err_mmap_inferred_redef);
2273 if (ActiveModule->InferredSubmoduleLoc.isValid())
2274 Diags.Report(ActiveModule->InferredSubmoduleLoc,
2275 diag::note_mmap_prev_definition);
2279 // Check for the 'framework' keyword, which is not permitted here.
2281 Diags.Report(StarLoc, diag::err_mmap_inferred_framework_submodule);
2284 } else if (Explicit) {
2285 Diags.Report(StarLoc, diag::err_mmap_explicit_inferred_framework);
2289 // If there were any problems with this inferred submodule, skip its body.
2291 if (Tok.is(MMToken::LBrace)) {
2293 skipUntil(MMToken::RBrace);
2294 if (Tok.is(MMToken::RBrace))
2301 // Parse optional attributes.
2303 if (parseOptionalAttributes(Attrs))
2307 // Note that we have an inferred submodule.
2308 ActiveModule->InferSubmodules = true;
2309 ActiveModule->InferredSubmoduleLoc = StarLoc;
2310 ActiveModule->InferExplicitSubmodules = Explicit;
2312 // We'll be inferring framework modules for this directory.
2313 Map.InferredDirectories[Directory].InferModules = true;
2314 Map.InferredDirectories[Directory].Attrs = Attrs;
2315 Map.InferredDirectories[Directory].ModuleMapFile = ModuleMapFile;
2316 // FIXME: Handle the 'framework' keyword.
2319 // Parse the opening brace.
2320 if (!Tok.is(MMToken::LBrace)) {
2321 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_lbrace_wildcard);
2325 SourceLocation LBraceLoc = consumeToken();
2327 // Parse the body of the inferred submodule.
2331 case MMToken::EndOfFile:
2332 case MMToken::RBrace:
2336 case MMToken::ExcludeKeyword: {
2338 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_inferred_member)
2339 << (ActiveModule != nullptr);
2345 // FIXME: Support string-literal module names here.
2346 if (!Tok.is(MMToken::Identifier)) {
2347 Diags.Report(Tok.getLocation(), diag::err_mmap_missing_exclude_name);
2351 Map.InferredDirectories[Directory].ExcludedModules
2352 .push_back(Tok.getString());
2357 case MMToken::ExportKeyword:
2358 if (!ActiveModule) {
2359 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_inferred_member)
2360 << (ActiveModule != nullptr);
2366 if (Tok.is(MMToken::Star))
2367 ActiveModule->InferExportWildcard = true;
2369 Diags.Report(Tok.getLocation(),
2370 diag::err_mmap_expected_export_wildcard);
2374 case MMToken::ExplicitKeyword:
2375 case MMToken::ModuleKeyword:
2376 case MMToken::HeaderKeyword:
2377 case MMToken::PrivateKeyword:
2378 case MMToken::UmbrellaKeyword:
2380 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_inferred_member)
2381 << (ActiveModule != nullptr);
2387 if (Tok.is(MMToken::RBrace))
2390 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_rbrace);
2391 Diags.Report(LBraceLoc, diag::note_mmap_lbrace_match);
2396 /// \brief Parse optional attributes.
2399 /// attribute attributes
2405 /// \param Attrs Will be filled in with the parsed attributes.
2407 /// \returns true if an error occurred, false otherwise.
2408 bool ModuleMapParser::parseOptionalAttributes(Attributes &Attrs) {
2409 bool HadError = false;
2411 while (Tok.is(MMToken::LSquare)) {
2413 SourceLocation LSquareLoc = consumeToken();
2415 // Check whether we have an attribute name here.
2416 if (!Tok.is(MMToken::Identifier)) {
2417 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_attribute);
2418 skipUntil(MMToken::RSquare);
2419 if (Tok.is(MMToken::RSquare))
2424 // Decode the attribute name.
2425 AttributeKind Attribute
2426 = llvm::StringSwitch<AttributeKind>(Tok.getString())
2427 .Case("exhaustive", AT_exhaustive)
2428 .Case("extern_c", AT_extern_c)
2429 .Case("no_undeclared_includes", AT_no_undeclared_includes)
2430 .Case("system", AT_system)
2431 .Default(AT_unknown);
2432 switch (Attribute) {
2434 Diags.Report(Tok.getLocation(), diag::warn_mmap_unknown_attribute)
2439 Attrs.IsSystem = true;
2443 Attrs.IsExternC = true;
2447 Attrs.IsExhaustive = true;
2450 case AT_no_undeclared_includes:
2451 Attrs.NoUndeclaredIncludes = true;
2457 if (!Tok.is(MMToken::RSquare)) {
2458 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_rsquare);
2459 Diags.Report(LSquareLoc, diag::note_mmap_lsquare_match);
2460 skipUntil(MMToken::RSquare);
2464 if (Tok.is(MMToken::RSquare))
2471 /// \brief Parse a module map file.
2473 /// module-map-file:
2474 /// module-declaration*
2475 bool ModuleMapParser::parseModuleMapFile() {
2478 case MMToken::EndOfFile:
2481 case MMToken::ExplicitKeyword:
2482 case MMToken::ExternKeyword:
2483 case MMToken::ModuleKeyword:
2484 case MMToken::FrameworkKeyword:
2488 case MMToken::Comma:
2489 case MMToken::ConfigMacros:
2490 case MMToken::Conflict:
2491 case MMToken::Exclaim:
2492 case MMToken::ExcludeKeyword:
2493 case MMToken::ExportKeyword:
2494 case MMToken::HeaderKeyword:
2495 case MMToken::Identifier:
2496 case MMToken::LBrace:
2497 case MMToken::LinkKeyword:
2498 case MMToken::LSquare:
2499 case MMToken::Period:
2500 case MMToken::PrivateKeyword:
2501 case MMToken::RBrace:
2502 case MMToken::RSquare:
2503 case MMToken::RequiresKeyword:
2505 case MMToken::StringLiteral:
2506 case MMToken::TextualKeyword:
2507 case MMToken::UmbrellaKeyword:
2508 case MMToken::UseKeyword:
2509 Diags.Report(Tok.getLocation(), diag::err_mmap_expected_module);
2517 bool ModuleMap::parseModuleMapFile(const FileEntry *File, bool IsSystem,
2518 const DirectoryEntry *Dir,
2519 SourceLocation ExternModuleLoc) {
2520 llvm::DenseMap<const FileEntry *, bool>::iterator Known
2521 = ParsedModuleMap.find(File);
2522 if (Known != ParsedModuleMap.end())
2523 return Known->second;
2525 assert(Target && "Missing target information");
2526 auto FileCharacter = IsSystem ? SrcMgr::C_System : SrcMgr::C_User;
2527 FileID ID = SourceMgr.createFileID(File, ExternModuleLoc, FileCharacter);
2528 const llvm::MemoryBuffer *Buffer = SourceMgr.getBuffer(ID);
2530 return ParsedModuleMap[File] = true;
2532 // Parse this module map file.
2533 Lexer L(ID, SourceMgr.getBuffer(ID), SourceMgr, MMapLangOpts);
2534 SourceLocation Start = L.getSourceLocation();
2535 ModuleMapParser Parser(L, SourceMgr, Target, Diags, *this, File, Dir,
2536 BuiltinIncludeDir, IsSystem);
2537 bool Result = Parser.parseModuleMapFile();
2538 ParsedModuleMap[File] = Result;
2540 // Notify callbacks that we parsed it.
2541 for (const auto &Cb : Callbacks)
2542 Cb->moduleMapFileRead(Start, *File, IsSystem);