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2468 lines
78 KiB
2468 lines
78 KiB
//===--- ModuleMap.cpp - Describe the layout of modules ---------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the ModuleMap implementation, which describes the layout
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// of a module as it relates to headers.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Lex/ModuleMap.h"
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#include "clang/Basic/CharInfo.h"
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#include "clang/Basic/Diagnostic.h"
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#include "clang/Basic/DiagnosticOptions.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Basic/TargetOptions.h"
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#include "clang/Lex/HeaderSearch.h"
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#include "clang/Lex/HeaderSearchOptions.h"
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#include "clang/Lex/LexDiagnostic.h"
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#include "clang/Lex/Lexer.h"
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#include "clang/Lex/LiteralSupport.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/Support/Allocator.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Host.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/raw_ostream.h"
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#include <stdlib.h>
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#if defined(LLVM_ON_UNIX)
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#include <limits.h>
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#endif
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using namespace clang;
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Module::ExportDecl
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ModuleMap::resolveExport(Module *Mod,
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const Module::UnresolvedExportDecl &Unresolved,
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bool Complain) const {
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// We may have just a wildcard.
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if (Unresolved.Id.empty()) {
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assert(Unresolved.Wildcard && "Invalid unresolved export");
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return Module::ExportDecl(nullptr, true);
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}
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// Resolve the module-id.
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Module *Context = resolveModuleId(Unresolved.Id, Mod, Complain);
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if (!Context)
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return Module::ExportDecl();
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return Module::ExportDecl(Context, Unresolved.Wildcard);
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}
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Module *ModuleMap::resolveModuleId(const ModuleId &Id, Module *Mod,
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bool Complain) const {
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// Find the starting module.
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Module *Context = lookupModuleUnqualified(Id[0].first, Mod);
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if (!Context) {
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if (Complain)
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Diags.Report(Id[0].second, diag::err_mmap_missing_module_unqualified)
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<< Id[0].first << Mod->getFullModuleName();
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return nullptr;
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}
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// Dig into the module path.
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for (unsigned I = 1, N = Id.size(); I != N; ++I) {
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Module *Sub = lookupModuleQualified(Id[I].first, Context);
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if (!Sub) {
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if (Complain)
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Diags.Report(Id[I].second, diag::err_mmap_missing_module_qualified)
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<< Id[I].first << Context->getFullModuleName()
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<< SourceRange(Id[0].second, Id[I-1].second);
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return nullptr;
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}
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Context = Sub;
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}
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return Context;
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}
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ModuleMap::ModuleMap(SourceManager &SourceMgr, DiagnosticsEngine &Diags,
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const LangOptions &LangOpts, const TargetInfo *Target,
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HeaderSearch &HeaderInfo)
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: SourceMgr(SourceMgr), Diags(Diags), LangOpts(LangOpts), Target(Target),
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HeaderInfo(HeaderInfo), BuiltinIncludeDir(nullptr),
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SourceModule(nullptr), NumCreatedModules(0) {
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MMapLangOpts.LineComment = true;
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}
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ModuleMap::~ModuleMap() {
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for (auto &M : Modules)
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delete M.getValue();
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}
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void ModuleMap::setTarget(const TargetInfo &Target) {
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assert((!this->Target || this->Target == &Target) &&
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"Improper target override");
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this->Target = &Target;
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}
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/// \brief "Sanitize" a filename so that it can be used as an identifier.
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static StringRef sanitizeFilenameAsIdentifier(StringRef Name,
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SmallVectorImpl<char> &Buffer) {
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if (Name.empty())
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return Name;
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if (!isValidIdentifier(Name)) {
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// If we don't already have something with the form of an identifier,
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// create a buffer with the sanitized name.
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Buffer.clear();
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if (isDigit(Name[0]))
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Buffer.push_back('_');
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Buffer.reserve(Buffer.size() + Name.size());
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for (unsigned I = 0, N = Name.size(); I != N; ++I) {
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if (isIdentifierBody(Name[I]))
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Buffer.push_back(Name[I]);
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else
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Buffer.push_back('_');
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}
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Name = StringRef(Buffer.data(), Buffer.size());
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}
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while (llvm::StringSwitch<bool>(Name)
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#define KEYWORD(Keyword,Conditions) .Case(#Keyword, true)
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#define ALIAS(Keyword, AliasOf, Conditions) .Case(Keyword, true)
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#include "clang/Basic/TokenKinds.def"
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.Default(false)) {
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if (Name.data() != Buffer.data())
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Buffer.append(Name.begin(), Name.end());
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Buffer.push_back('_');
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Name = StringRef(Buffer.data(), Buffer.size());
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}
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return Name;
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}
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/// \brief Determine whether the given file name is the name of a builtin
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/// header, supplied by Clang to replace, override, or augment existing system
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/// headers.
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static bool isBuiltinHeader(StringRef FileName) {
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return llvm::StringSwitch<bool>(FileName)
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.Case("float.h", true)
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.Case("iso646.h", true)
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.Case("limits.h", true)
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.Case("stdalign.h", true)
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.Case("stdarg.h", true)
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.Case("stdatomic.h", true)
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.Case("stdbool.h", true)
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.Case("stddef.h", true)
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.Case("stdint.h", true)
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.Case("tgmath.h", true)
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.Case("unwind.h", true)
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.Default(false);
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}
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ModuleMap::HeadersMap::iterator
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ModuleMap::findKnownHeader(const FileEntry *File) {
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HeadersMap::iterator Known = Headers.find(File);
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if (HeaderInfo.getHeaderSearchOpts().ImplicitModuleMaps &&
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Known == Headers.end() && File->getDir() == BuiltinIncludeDir &&
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isBuiltinHeader(llvm::sys::path::filename(File->getName()))) {
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HeaderInfo.loadTopLevelSystemModules();
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return Headers.find(File);
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}
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return Known;
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}
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ModuleMap::KnownHeader
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ModuleMap::findHeaderInUmbrellaDirs(const FileEntry *File,
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SmallVectorImpl<const DirectoryEntry *> &IntermediateDirs) {
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if (UmbrellaDirs.empty())
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return KnownHeader();
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const DirectoryEntry *Dir = File->getDir();
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assert(Dir && "file in no directory");
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// Note: as an egregious but useful hack we use the real path here, because
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// frameworks moving from top-level frameworks to embedded frameworks tend
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// to be symlinked from the top-level location to the embedded location,
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// and we need to resolve lookups as if we had found the embedded location.
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StringRef DirName = SourceMgr.getFileManager().getCanonicalName(Dir);
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// Keep walking up the directory hierarchy, looking for a directory with
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// an umbrella header.
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do {
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auto KnownDir = UmbrellaDirs.find(Dir);
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if (KnownDir != UmbrellaDirs.end())
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return KnownHeader(KnownDir->second, NormalHeader);
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IntermediateDirs.push_back(Dir);
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// Retrieve our parent path.
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DirName = llvm::sys::path::parent_path(DirName);
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if (DirName.empty())
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break;
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// Resolve the parent path to a directory entry.
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Dir = SourceMgr.getFileManager().getDirectory(DirName);
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} while (Dir);
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return KnownHeader();
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}
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static bool violatesPrivateInclude(Module *RequestingModule,
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const FileEntry *IncFileEnt,
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ModuleMap::KnownHeader Header) {
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#ifndef NDEBUG
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if (Header.getRole() & ModuleMap::PrivateHeader) {
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// Check for consistency between the module header role
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// as obtained from the lookup and as obtained from the module.
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// This check is not cheap, so enable it only for debugging.
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bool IsPrivate = false;
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SmallVectorImpl<Module::Header> *HeaderList[] = {
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&Header.getModule()->Headers[Module::HK_Private],
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&Header.getModule()->Headers[Module::HK_PrivateTextual]};
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for (auto *Hs : HeaderList)
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IsPrivate |=
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std::find_if(Hs->begin(), Hs->end(), [&](const Module::Header &H) {
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return H.Entry == IncFileEnt;
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}) != Hs->end();
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assert(IsPrivate && "inconsistent headers and roles");
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}
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#endif
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return !Header.isAccessibleFrom(RequestingModule);
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}
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static Module *getTopLevelOrNull(Module *M) {
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return M ? M->getTopLevelModule() : nullptr;
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}
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void ModuleMap::diagnoseHeaderInclusion(Module *RequestingModule,
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bool RequestingModuleIsModuleInterface,
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SourceLocation FilenameLoc,
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StringRef Filename,
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const FileEntry *File) {
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// No errors for indirect modules. This may be a bit of a problem for modules
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// with no source files.
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if (getTopLevelOrNull(RequestingModule) != getTopLevelOrNull(SourceModule))
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return;
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if (RequestingModule)
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resolveUses(RequestingModule, /*Complain=*/false);
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bool Excluded = false;
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Module *Private = nullptr;
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Module *NotUsed = nullptr;
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HeadersMap::iterator Known = findKnownHeader(File);
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if (Known != Headers.end()) {
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for (const KnownHeader &Header : Known->second) {
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// Remember private headers for later printing of a diagnostic.
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if (violatesPrivateInclude(RequestingModule, File, Header)) {
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Private = Header.getModule();
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continue;
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}
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// If uses need to be specified explicitly, we are only allowed to return
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// modules that are explicitly used by the requesting module.
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if (RequestingModule && LangOpts.ModulesDeclUse &&
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!RequestingModule->directlyUses(Header.getModule())) {
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NotUsed = Header.getModule();
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continue;
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}
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// We have found a module that we can happily use.
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return;
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}
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Excluded = true;
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}
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// We have found a header, but it is private.
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if (Private) {
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Diags.Report(FilenameLoc, diag::warn_use_of_private_header_outside_module)
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<< Filename;
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return;
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}
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// We have found a module, but we don't use it.
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if (NotUsed) {
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Diags.Report(FilenameLoc, diag::err_undeclared_use_of_module)
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<< RequestingModule->getFullModuleName() << Filename;
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return;
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}
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if (Excluded || isHeaderInUmbrellaDirs(File))
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return;
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// At this point, only non-modular includes remain.
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if (LangOpts.ModulesStrictDeclUse) {
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Diags.Report(FilenameLoc, diag::err_undeclared_use_of_module)
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<< RequestingModule->getFullModuleName() << Filename;
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} else if (RequestingModule && RequestingModuleIsModuleInterface) {
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diag::kind DiagID = RequestingModule->getTopLevelModule()->IsFramework ?
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diag::warn_non_modular_include_in_framework_module :
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diag::warn_non_modular_include_in_module;
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Diags.Report(FilenameLoc, DiagID) << RequestingModule->getFullModuleName();
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}
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}
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static bool isBetterKnownHeader(const ModuleMap::KnownHeader &New,
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const ModuleMap::KnownHeader &Old) {
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// Prefer available modules.
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if (New.getModule()->isAvailable() && !Old.getModule()->isAvailable())
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return true;
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// Prefer a public header over a private header.
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if ((New.getRole() & ModuleMap::PrivateHeader) !=
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(Old.getRole() & ModuleMap::PrivateHeader))
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return !(New.getRole() & ModuleMap::PrivateHeader);
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// Prefer a non-textual header over a textual header.
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if ((New.getRole() & ModuleMap::TextualHeader) !=
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(Old.getRole() & ModuleMap::TextualHeader))
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return !(New.getRole() & ModuleMap::TextualHeader);
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// Don't have a reason to choose between these. Just keep the first one.
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return false;
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}
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ModuleMap::KnownHeader ModuleMap::findModuleForHeader(const FileEntry *File) {
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auto MakeResult = [&](ModuleMap::KnownHeader R) -> ModuleMap::KnownHeader {
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if (R.getRole() & ModuleMap::TextualHeader)
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return ModuleMap::KnownHeader();
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return R;
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};
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HeadersMap::iterator Known = findKnownHeader(File);
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if (Known != Headers.end()) {
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ModuleMap::KnownHeader Result;
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// Iterate over all modules that 'File' is part of to find the best fit.
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for (KnownHeader &H : Known->second) {
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// Prefer a header from the source module over all others.
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if (H.getModule()->getTopLevelModule() == SourceModule)
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return MakeResult(H);
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if (!Result || isBetterKnownHeader(H, Result))
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Result = H;
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}
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return MakeResult(Result);
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}
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return MakeResult(findOrCreateModuleForHeaderInUmbrellaDir(File));
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}
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ModuleMap::KnownHeader
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ModuleMap::findOrCreateModuleForHeaderInUmbrellaDir(const FileEntry *File) {
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assert(!Headers.count(File) && "already have a module for this header");
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SmallVector<const DirectoryEntry *, 2> SkippedDirs;
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KnownHeader H = findHeaderInUmbrellaDirs(File, SkippedDirs);
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if (H) {
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Module *Result = H.getModule();
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// Search up the module stack until we find a module with an umbrella
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// directory.
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Module *UmbrellaModule = Result;
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while (!UmbrellaModule->getUmbrellaDir() && UmbrellaModule->Parent)
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UmbrellaModule = UmbrellaModule->Parent;
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if (UmbrellaModule->InferSubmodules) {
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const FileEntry *UmbrellaModuleMap =
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getModuleMapFileForUniquing(UmbrellaModule);
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// Infer submodules for each of the directories we found between
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// the directory of the umbrella header and the directory where
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// the actual header is located.
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bool Explicit = UmbrellaModule->InferExplicitSubmodules;
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for (unsigned I = SkippedDirs.size(); I != 0; --I) {
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// Find or create the module that corresponds to this directory name.
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SmallString<32> NameBuf;
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StringRef Name = sanitizeFilenameAsIdentifier(
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llvm::sys::path::stem(SkippedDirs[I-1]->getName()), NameBuf);
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Result = findOrCreateModule(Name, Result, /*IsFramework=*/false,
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Explicit).first;
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InferredModuleAllowedBy[Result] = UmbrellaModuleMap;
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Result->IsInferred = true;
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// Associate the module and the directory.
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UmbrellaDirs[SkippedDirs[I-1]] = Result;
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// If inferred submodules export everything they import, add a
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// wildcard to the set of exports.
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if (UmbrellaModule->InferExportWildcard && Result->Exports.empty())
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Result->Exports.push_back(Module::ExportDecl(nullptr, true));
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}
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// Infer a submodule with the same name as this header file.
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SmallString<32> NameBuf;
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StringRef Name = sanitizeFilenameAsIdentifier(
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llvm::sys::path::stem(File->getName()), NameBuf);
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Result = findOrCreateModule(Name, Result, /*IsFramework=*/false,
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Explicit).first;
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InferredModuleAllowedBy[Result] = UmbrellaModuleMap;
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Result->IsInferred = true;
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Result->addTopHeader(File);
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// If inferred submodules export everything they import, add a
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// wildcard to the set of exports.
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if (UmbrellaModule->InferExportWildcard && Result->Exports.empty())
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Result->Exports.push_back(Module::ExportDecl(nullptr, true));
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} else {
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// Record each of the directories we stepped through as being part of
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// the module we found, since the umbrella header covers them all.
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for (unsigned I = 0, N = SkippedDirs.size(); I != N; ++I)
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UmbrellaDirs[SkippedDirs[I]] = Result;
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}
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KnownHeader Header(Result, NormalHeader);
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Headers[File].push_back(Header);
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return Header;
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}
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return KnownHeader();
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}
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ArrayRef<ModuleMap::KnownHeader>
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ModuleMap::findAllModulesForHeader(const FileEntry *File) const {
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auto It = Headers.find(File);
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if (It == Headers.end())
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return None;
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return It->second;
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}
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bool ModuleMap::isHeaderInUnavailableModule(const FileEntry *Header) const {
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return isHeaderUnavailableInModule(Header, nullptr);
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}
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bool
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ModuleMap::isHeaderUnavailableInModule(const FileEntry *Header,
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const Module *RequestingModule) const {
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HeadersMap::const_iterator Known = Headers.find(Header);
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if (Known != Headers.end()) {
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for (SmallVectorImpl<KnownHeader>::const_iterator
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I = Known->second.begin(),
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E = Known->second.end();
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I != E; ++I) {
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if (I->isAvailable() && (!RequestingModule ||
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I->getModule()->isSubModuleOf(RequestingModule)))
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return false;
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}
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return true;
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}
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const DirectoryEntry *Dir = Header->getDir();
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SmallVector<const DirectoryEntry *, 2> SkippedDirs;
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StringRef DirName = Dir->getName();
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auto IsUnavailable = [&](const Module *M) {
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return !M->isAvailable() && (!RequestingModule ||
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M->isSubModuleOf(RequestingModule));
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};
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|
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// Keep walking up the directory hierarchy, looking for a directory with
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// an umbrella header.
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do {
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llvm::DenseMap<const DirectoryEntry *, Module *>::const_iterator KnownDir
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= UmbrellaDirs.find(Dir);
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if (KnownDir != UmbrellaDirs.end()) {
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Module *Found = KnownDir->second;
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if (IsUnavailable(Found))
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return true;
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// Search up the module stack until we find a module with an umbrella
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// directory.
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Module *UmbrellaModule = Found;
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while (!UmbrellaModule->getUmbrellaDir() && UmbrellaModule->Parent)
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UmbrellaModule = UmbrellaModule->Parent;
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if (UmbrellaModule->InferSubmodules) {
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for (unsigned I = SkippedDirs.size(); I != 0; --I) {
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// Find or create the module that corresponds to this directory name.
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|
SmallString<32> NameBuf;
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StringRef Name = sanitizeFilenameAsIdentifier(
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llvm::sys::path::stem(SkippedDirs[I-1]->getName()),
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NameBuf);
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Found = lookupModuleQualified(Name, Found);
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if (!Found)
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return false;
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if (IsUnavailable(Found))
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return true;
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}
|
|
|
|
// Infer a submodule with the same name as this header file.
|
|
SmallString<32> NameBuf;
|
|
StringRef Name = sanitizeFilenameAsIdentifier(
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llvm::sys::path::stem(Header->getName()),
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NameBuf);
|
|
Found = lookupModuleQualified(Name, Found);
|
|
if (!Found)
|
|
return false;
|
|
}
|
|
|
|
return IsUnavailable(Found);
|
|
}
|
|
|
|
SkippedDirs.push_back(Dir);
|
|
|
|
// Retrieve our parent path.
|
|
DirName = llvm::sys::path::parent_path(DirName);
|
|
if (DirName.empty())
|
|
break;
|
|
|
|
// Resolve the parent path to a directory entry.
|
|
Dir = SourceMgr.getFileManager().getDirectory(DirName);
|
|
} while (Dir);
|
|
|
|
return false;
|
|
}
|
|
|
|
Module *ModuleMap::findModule(StringRef Name) const {
|
|
llvm::StringMap<Module *>::const_iterator Known = Modules.find(Name);
|
|
if (Known != Modules.end())
|
|
return Known->getValue();
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
Module *ModuleMap::lookupModuleUnqualified(StringRef Name,
|
|
Module *Context) const {
|
|
for(; Context; Context = Context->Parent) {
|
|
if (Module *Sub = lookupModuleQualified(Name, Context))
|
|
return Sub;
|
|
}
|
|
|
|
return findModule(Name);
|
|
}
|
|
|
|
Module *ModuleMap::lookupModuleQualified(StringRef Name, Module *Context) const{
|
|
if (!Context)
|
|
return findModule(Name);
|
|
|
|
return Context->findSubmodule(Name);
|
|
}
|
|
|
|
std::pair<Module *, bool>
|
|
ModuleMap::findOrCreateModule(StringRef Name, Module *Parent, bool IsFramework,
|
|
bool IsExplicit) {
|
|
// Try to find an existing module with this name.
|
|
if (Module *Sub = lookupModuleQualified(Name, Parent))
|
|
return std::make_pair(Sub, false);
|
|
|
|
// Create a new module with this name.
|
|
Module *Result = new Module(Name, SourceLocation(), Parent,
|
|
IsFramework, IsExplicit, NumCreatedModules++);
|
|
if (!Parent) {
|
|
if (LangOpts.CurrentModule == Name)
|
|
SourceModule = Result;
|
|
Modules[Name] = Result;
|
|
}
|
|
return std::make_pair(Result, true);
|
|
}
|
|
|
|
/// \brief For a framework module, infer the framework against which we
|
|
/// should link.
|
|
static void inferFrameworkLink(Module *Mod, const DirectoryEntry *FrameworkDir,
|
|
FileManager &FileMgr) {
|
|
assert(Mod->IsFramework && "Can only infer linking for framework modules");
|
|
assert(!Mod->isSubFramework() &&
|
|
"Can only infer linking for top-level frameworks");
|
|
|
|
SmallString<128> LibName;
|
|
LibName += FrameworkDir->getName();
|
|
llvm::sys::path::append(LibName, Mod->Name);
|
|
|
|
// The library name of a framework has more than one possible extension since
|
|
// the introduction of the text-based dynamic library format. We need to check
|
|
// for both before we give up.
|
|
static const char *frameworkExtensions[] = {"", ".tbd"};
|
|
for (const auto *extension : frameworkExtensions) {
|
|
llvm::sys::path::replace_extension(LibName, extension);
|
|
if (FileMgr.getFile(LibName)) {
|
|
Mod->LinkLibraries.push_back(Module::LinkLibrary(Mod->Name,
|
|
/*IsFramework=*/true));
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
Module *ModuleMap::inferFrameworkModule(const DirectoryEntry *FrameworkDir,
|
|
bool IsSystem, Module *Parent) {
|
|
Attributes Attrs;
|
|
Attrs.IsSystem = IsSystem;
|
|
return inferFrameworkModule(FrameworkDir, Attrs, Parent);
|
|
}
|
|
|
|
Module *ModuleMap::inferFrameworkModule(const DirectoryEntry *FrameworkDir,
|
|
Attributes Attrs, Module *Parent) {
|
|
// Note: as an egregious but useful hack we use the real path here, because
|
|
// we might be looking at an embedded framework that symlinks out to a
|
|
// top-level framework, and we need to infer as if we were naming the
|
|
// top-level framework.
|
|
StringRef FrameworkDirName =
|
|
SourceMgr.getFileManager().getCanonicalName(FrameworkDir);
|
|
|
|
// In case this is a case-insensitive filesystem, use the canonical
|
|
// directory name as the ModuleName, since modules are case-sensitive.
|
|
// FIXME: we should be able to give a fix-it hint for the correct spelling.
|
|
SmallString<32> ModuleNameStorage;
|
|
StringRef ModuleName = sanitizeFilenameAsIdentifier(
|
|
llvm::sys::path::stem(FrameworkDirName), ModuleNameStorage);
|
|
|
|
// Check whether we've already found this module.
|
|
if (Module *Mod = lookupModuleQualified(ModuleName, Parent))
|
|
return Mod;
|
|
|
|
FileManager &FileMgr = SourceMgr.getFileManager();
|
|
|
|
// If the framework has a parent path from which we're allowed to infer
|
|
// a framework module, do so.
|
|
const FileEntry *ModuleMapFile = nullptr;
|
|
if (!Parent) {
|
|
// Determine whether we're allowed to infer a module map.
|
|
bool canInfer = false;
|
|
if (llvm::sys::path::has_parent_path(FrameworkDirName)) {
|
|
// Figure out the parent path.
|
|
StringRef Parent = llvm::sys::path::parent_path(FrameworkDirName);
|
|
if (const DirectoryEntry *ParentDir = FileMgr.getDirectory(Parent)) {
|
|
// Check whether we have already looked into the parent directory
|
|
// for a module map.
|
|
llvm::DenseMap<const DirectoryEntry *, InferredDirectory>::const_iterator
|
|
inferred = InferredDirectories.find(ParentDir);
|
|
if (inferred == InferredDirectories.end()) {
|
|
// We haven't looked here before. Load a module map, if there is
|
|
// one.
|
|
bool IsFrameworkDir = Parent.endswith(".framework");
|
|
if (const FileEntry *ModMapFile =
|
|
HeaderInfo.lookupModuleMapFile(ParentDir, IsFrameworkDir)) {
|
|
parseModuleMapFile(ModMapFile, Attrs.IsSystem, ParentDir);
|
|
inferred = InferredDirectories.find(ParentDir);
|
|
}
|
|
|
|
if (inferred == InferredDirectories.end())
|
|
inferred = InferredDirectories.insert(
|
|
std::make_pair(ParentDir, InferredDirectory())).first;
|
|
}
|
|
|
|
if (inferred->second.InferModules) {
|
|
// We're allowed to infer for this directory, but make sure it's okay
|
|
// to infer this particular module.
|
|
StringRef Name = llvm::sys::path::stem(FrameworkDirName);
|
|
canInfer = std::find(inferred->second.ExcludedModules.begin(),
|
|
inferred->second.ExcludedModules.end(),
|
|
Name) == inferred->second.ExcludedModules.end();
|
|
|
|
Attrs.IsSystem |= inferred->second.Attrs.IsSystem;
|
|
Attrs.IsExternC |= inferred->second.Attrs.IsExternC;
|
|
Attrs.IsExhaustive |= inferred->second.Attrs.IsExhaustive;
|
|
ModuleMapFile = inferred->second.ModuleMapFile;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If we're not allowed to infer a framework module, don't.
|
|
if (!canInfer)
|
|
return nullptr;
|
|
} else
|
|
ModuleMapFile = getModuleMapFileForUniquing(Parent);
|
|
|
|
|
|
// Look for an umbrella header.
|
|
SmallString<128> UmbrellaName = StringRef(FrameworkDir->getName());
|
|
llvm::sys::path::append(UmbrellaName, "Headers", ModuleName + ".h");
|
|
const FileEntry *UmbrellaHeader = FileMgr.getFile(UmbrellaName);
|
|
|
|
// FIXME: If there's no umbrella header, we could probably scan the
|
|
// framework to load *everything*. But, it's not clear that this is a good
|
|
// idea.
|
|
if (!UmbrellaHeader)
|
|
return nullptr;
|
|
|
|
Module *Result = new Module(ModuleName, SourceLocation(), Parent,
|
|
/*IsFramework=*/true, /*IsExplicit=*/false,
|
|
NumCreatedModules++);
|
|
InferredModuleAllowedBy[Result] = ModuleMapFile;
|
|
Result->IsInferred = true;
|
|
if (!Parent) {
|
|
if (LangOpts.CurrentModule == ModuleName)
|
|
SourceModule = Result;
|
|
Modules[ModuleName] = Result;
|
|
}
|
|
|
|
Result->IsSystem |= Attrs.IsSystem;
|
|
Result->IsExternC |= Attrs.IsExternC;
|
|
Result->ConfigMacrosExhaustive |= Attrs.IsExhaustive;
|
|
Result->Directory = FrameworkDir;
|
|
|
|
// umbrella header "umbrella-header-name"
|
|
//
|
|
// The "Headers/" component of the name is implied because this is
|
|
// a framework module.
|
|
setUmbrellaHeader(Result, UmbrellaHeader, ModuleName + ".h");
|
|
|
|
// export *
|
|
Result->Exports.push_back(Module::ExportDecl(nullptr, true));
|
|
|
|
// module * { export * }
|
|
Result->InferSubmodules = true;
|
|
Result->InferExportWildcard = true;
|
|
|
|
// Look for subframeworks.
|
|
std::error_code EC;
|
|
SmallString<128> SubframeworksDirName
|
|
= StringRef(FrameworkDir->getName());
|
|
llvm::sys::path::append(SubframeworksDirName, "Frameworks");
|
|
llvm::sys::path::native(SubframeworksDirName);
|
|
vfs::FileSystem &FS = *FileMgr.getVirtualFileSystem();
|
|
for (vfs::directory_iterator Dir = FS.dir_begin(SubframeworksDirName, EC),
|
|
DirEnd;
|
|
Dir != DirEnd && !EC; Dir.increment(EC)) {
|
|
if (!StringRef(Dir->getName()).endswith(".framework"))
|
|
continue;
|
|
|
|
if (const DirectoryEntry *SubframeworkDir =
|
|
FileMgr.getDirectory(Dir->getName())) {
|
|
// Note: as an egregious but useful hack, we use the real path here and
|
|
// check whether it is actually a subdirectory of the parent directory.
|
|
// This will not be the case if the 'subframework' is actually a symlink
|
|
// out to a top-level framework.
|
|
StringRef SubframeworkDirName = FileMgr.getCanonicalName(SubframeworkDir);
|
|
bool FoundParent = false;
|
|
do {
|
|
// Get the parent directory name.
|
|
SubframeworkDirName
|
|
= llvm::sys::path::parent_path(SubframeworkDirName);
|
|
if (SubframeworkDirName.empty())
|
|
break;
|
|
|
|
if (FileMgr.getDirectory(SubframeworkDirName) == FrameworkDir) {
|
|
FoundParent = true;
|
|
break;
|
|
}
|
|
} while (true);
|
|
|
|
if (!FoundParent)
|
|
continue;
|
|
|
|
// FIXME: Do we want to warn about subframeworks without umbrella headers?
|
|
inferFrameworkModule(SubframeworkDir, Attrs, Result);
|
|
}
|
|
}
|
|
|
|
// If the module is a top-level framework, automatically link against the
|
|
// framework.
|
|
if (!Result->isSubFramework()) {
|
|
inferFrameworkLink(Result, FrameworkDir, FileMgr);
|
|
}
|
|
|
|
return Result;
|
|
}
|
|
|
|
void ModuleMap::setUmbrellaHeader(Module *Mod, const FileEntry *UmbrellaHeader,
|
|
Twine NameAsWritten) {
|
|
Headers[UmbrellaHeader].push_back(KnownHeader(Mod, NormalHeader));
|
|
Mod->Umbrella = UmbrellaHeader;
|
|
Mod->UmbrellaAsWritten = NameAsWritten.str();
|
|
UmbrellaDirs[UmbrellaHeader->getDir()] = Mod;
|
|
|
|
// Notify callbacks that we just added a new header.
|
|
for (const auto &Cb : Callbacks)
|
|
Cb->moduleMapAddUmbrellaHeader(&SourceMgr.getFileManager(), UmbrellaHeader);
|
|
}
|
|
|
|
void ModuleMap::setUmbrellaDir(Module *Mod, const DirectoryEntry *UmbrellaDir,
|
|
Twine NameAsWritten) {
|
|
Mod->Umbrella = UmbrellaDir;
|
|
Mod->UmbrellaAsWritten = NameAsWritten.str();
|
|
UmbrellaDirs[UmbrellaDir] = Mod;
|
|
}
|
|
|
|
static Module::HeaderKind headerRoleToKind(ModuleMap::ModuleHeaderRole Role) {
|
|
switch ((int)Role) {
|
|
default: llvm_unreachable("unknown header role");
|
|
case ModuleMap::NormalHeader:
|
|
return Module::HK_Normal;
|
|
case ModuleMap::PrivateHeader:
|
|
return Module::HK_Private;
|
|
case ModuleMap::TextualHeader:
|
|
return Module::HK_Textual;
|
|
case ModuleMap::PrivateHeader | ModuleMap::TextualHeader:
|
|
return Module::HK_PrivateTextual;
|
|
}
|
|
}
|
|
|
|
void ModuleMap::addHeader(Module *Mod, Module::Header Header,
|
|
ModuleHeaderRole Role, bool Imported) {
|
|
KnownHeader KH(Mod, Role);
|
|
|
|
// Only add each header to the headers list once.
|
|
// FIXME: Should we diagnose if a header is listed twice in the
|
|
// same module definition?
|
|
auto &HeaderList = Headers[Header.Entry];
|
|
for (auto H : HeaderList)
|
|
if (H == KH)
|
|
return;
|
|
|
|
HeaderList.push_back(KH);
|
|
Mod->Headers[headerRoleToKind(Role)].push_back(std::move(Header));
|
|
|
|
bool isCompilingModuleHeader =
|
|
LangOpts.CompilingModule && Mod->getTopLevelModule() == SourceModule;
|
|
if (!Imported || isCompilingModuleHeader) {
|
|
// When we import HeaderFileInfo, the external source is expected to
|
|
// set the isModuleHeader flag itself.
|
|
HeaderInfo.MarkFileModuleHeader(Header.Entry, Role,
|
|
isCompilingModuleHeader);
|
|
}
|
|
|
|
// Notify callbacks that we just added a new header.
|
|
for (const auto &Cb : Callbacks)
|
|
Cb->moduleMapAddHeader(Header.Entry->getName());
|
|
}
|
|
|
|
void ModuleMap::excludeHeader(Module *Mod, Module::Header Header) {
|
|
// Add this as a known header so we won't implicitly add it to any
|
|
// umbrella directory module.
|
|
// FIXME: Should we only exclude it from umbrella modules within the
|
|
// specified module?
|
|
(void) Headers[Header.Entry];
|
|
|
|
Mod->Headers[Module::HK_Excluded].push_back(std::move(Header));
|
|
}
|
|
|
|
const FileEntry *
|
|
ModuleMap::getContainingModuleMapFile(const Module *Module) const {
|
|
if (Module->DefinitionLoc.isInvalid())
|
|
return nullptr;
|
|
|
|
return SourceMgr.getFileEntryForID(
|
|
SourceMgr.getFileID(Module->DefinitionLoc));
|
|
}
|
|
|
|
const FileEntry *ModuleMap::getModuleMapFileForUniquing(const Module *M) const {
|
|
if (M->IsInferred) {
|
|
assert(InferredModuleAllowedBy.count(M) && "missing inferred module map");
|
|
return InferredModuleAllowedBy.find(M)->second;
|
|
}
|
|
return getContainingModuleMapFile(M);
|
|
}
|
|
|
|
void ModuleMap::setInferredModuleAllowedBy(Module *M, const FileEntry *ModMap) {
|
|
assert(M->IsInferred && "module not inferred");
|
|
InferredModuleAllowedBy[M] = ModMap;
|
|
}
|
|
|
|
LLVM_DUMP_METHOD void ModuleMap::dump() {
|
|
llvm::errs() << "Modules:";
|
|
for (llvm::StringMap<Module *>::iterator M = Modules.begin(),
|
|
MEnd = Modules.end();
|
|
M != MEnd; ++M)
|
|
M->getValue()->print(llvm::errs(), 2);
|
|
|
|
llvm::errs() << "Headers:";
|
|
for (HeadersMap::iterator H = Headers.begin(), HEnd = Headers.end();
|
|
H != HEnd; ++H) {
|
|
llvm::errs() << " \"" << H->first->getName() << "\" -> ";
|
|
for (SmallVectorImpl<KnownHeader>::const_iterator I = H->second.begin(),
|
|
E = H->second.end();
|
|
I != E; ++I) {
|
|
if (I != H->second.begin())
|
|
llvm::errs() << ",";
|
|
llvm::errs() << I->getModule()->getFullModuleName();
|
|
}
|
|
llvm::errs() << "\n";
|
|
}
|
|
}
|
|
|
|
bool ModuleMap::resolveExports(Module *Mod, bool Complain) {
|
|
auto Unresolved = std::move(Mod->UnresolvedExports);
|
|
Mod->UnresolvedExports.clear();
|
|
for (auto &UE : Unresolved) {
|
|
Module::ExportDecl Export = resolveExport(Mod, UE, Complain);
|
|
if (Export.getPointer() || Export.getInt())
|
|
Mod->Exports.push_back(Export);
|
|
else
|
|
Mod->UnresolvedExports.push_back(UE);
|
|
}
|
|
return !Mod->UnresolvedExports.empty();
|
|
}
|
|
|
|
bool ModuleMap::resolveUses(Module *Mod, bool Complain) {
|
|
auto Unresolved = std::move(Mod->UnresolvedDirectUses);
|
|
Mod->UnresolvedDirectUses.clear();
|
|
for (auto &UDU : Unresolved) {
|
|
Module *DirectUse = resolveModuleId(UDU, Mod, Complain);
|
|
if (DirectUse)
|
|
Mod->DirectUses.push_back(DirectUse);
|
|
else
|
|
Mod->UnresolvedDirectUses.push_back(UDU);
|
|
}
|
|
return !Mod->UnresolvedDirectUses.empty();
|
|
}
|
|
|
|
bool ModuleMap::resolveConflicts(Module *Mod, bool Complain) {
|
|
auto Unresolved = std::move(Mod->UnresolvedConflicts);
|
|
Mod->UnresolvedConflicts.clear();
|
|
for (auto &UC : Unresolved) {
|
|
if (Module *OtherMod = resolveModuleId(UC.Id, Mod, Complain)) {
|
|
Module::Conflict Conflict;
|
|
Conflict.Other = OtherMod;
|
|
Conflict.Message = UC.Message;
|
|
Mod->Conflicts.push_back(Conflict);
|
|
} else
|
|
Mod->UnresolvedConflicts.push_back(UC);
|
|
}
|
|
return !Mod->UnresolvedConflicts.empty();
|
|
}
|
|
|
|
Module *ModuleMap::inferModuleFromLocation(FullSourceLoc Loc) {
|
|
if (Loc.isInvalid())
|
|
return nullptr;
|
|
|
|
if (UmbrellaDirs.empty() && Headers.empty())
|
|
return nullptr;
|
|
|
|
// Use the expansion location to determine which module we're in.
|
|
FullSourceLoc ExpansionLoc = Loc.getExpansionLoc();
|
|
if (!ExpansionLoc.isFileID())
|
|
return nullptr;
|
|
|
|
const SourceManager &SrcMgr = Loc.getManager();
|
|
FileID ExpansionFileID = ExpansionLoc.getFileID();
|
|
|
|
while (const FileEntry *ExpansionFile
|
|
= SrcMgr.getFileEntryForID(ExpansionFileID)) {
|
|
// Find the module that owns this header (if any).
|
|
if (Module *Mod = findModuleForHeader(ExpansionFile).getModule())
|
|
return Mod;
|
|
|
|
// No module owns this header, so look up the inclusion chain to see if
|
|
// any included header has an associated module.
|
|
SourceLocation IncludeLoc = SrcMgr.getIncludeLoc(ExpansionFileID);
|
|
if (IncludeLoc.isInvalid())
|
|
return nullptr;
|
|
|
|
ExpansionFileID = SrcMgr.getFileID(IncludeLoc);
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
//----------------------------------------------------------------------------//
|
|
// Module map file parser
|
|
//----------------------------------------------------------------------------//
|
|
|
|
namespace clang {
|
|
/// \brief A token in a module map file.
|
|
struct MMToken {
|
|
enum TokenKind {
|
|
Comma,
|
|
ConfigMacros,
|
|
Conflict,
|
|
EndOfFile,
|
|
HeaderKeyword,
|
|
Identifier,
|
|
Exclaim,
|
|
ExcludeKeyword,
|
|
ExplicitKeyword,
|
|
ExportKeyword,
|
|
ExternKeyword,
|
|
FrameworkKeyword,
|
|
LinkKeyword,
|
|
ModuleKeyword,
|
|
Period,
|
|
PrivateKeyword,
|
|
UmbrellaKeyword,
|
|
UseKeyword,
|
|
RequiresKeyword,
|
|
Star,
|
|
StringLiteral,
|
|
TextualKeyword,
|
|
LBrace,
|
|
RBrace,
|
|
LSquare,
|
|
RSquare
|
|
} Kind;
|
|
|
|
unsigned Location;
|
|
unsigned StringLength;
|
|
const char *StringData;
|
|
|
|
void clear() {
|
|
Kind = EndOfFile;
|
|
Location = 0;
|
|
StringLength = 0;
|
|
StringData = nullptr;
|
|
}
|
|
|
|
bool is(TokenKind K) const { return Kind == K; }
|
|
|
|
SourceLocation getLocation() const {
|
|
return SourceLocation::getFromRawEncoding(Location);
|
|
}
|
|
|
|
StringRef getString() const {
|
|
return StringRef(StringData, StringLength);
|
|
}
|
|
};
|
|
|
|
class ModuleMapParser {
|
|
Lexer &L;
|
|
SourceManager &SourceMgr;
|
|
|
|
/// \brief Default target information, used only for string literal
|
|
/// parsing.
|
|
const TargetInfo *Target;
|
|
|
|
DiagnosticsEngine &Diags;
|
|
ModuleMap ⤅
|
|
|
|
/// \brief The current module map file.
|
|
const FileEntry *ModuleMapFile;
|
|
|
|
/// \brief The directory that file names in this module map file should
|
|
/// be resolved relative to.
|
|
const DirectoryEntry *Directory;
|
|
|
|
/// \brief The directory containing Clang-supplied headers.
|
|
const DirectoryEntry *BuiltinIncludeDir;
|
|
|
|
/// \brief Whether this module map is in a system header directory.
|
|
bool IsSystem;
|
|
|
|
/// \brief Whether an error occurred.
|
|
bool HadError;
|
|
|
|
/// \brief Stores string data for the various string literals referenced
|
|
/// during parsing.
|
|
llvm::BumpPtrAllocator StringData;
|
|
|
|
/// \brief The current token.
|
|
MMToken Tok;
|
|
|
|
/// \brief The active module.
|
|
Module *ActiveModule;
|
|
|
|
/// \brief Whether a module uses the 'requires excluded' hack to mark its
|
|
/// contents as 'textual'.
|
|
///
|
|
/// On older Darwin SDK versions, 'requires excluded' is used to mark the
|
|
/// contents of the Darwin.C.excluded (assert.h) and Tcl.Private modules as
|
|
/// non-modular headers. For backwards compatibility, we continue to
|
|
/// support this idiom for just these modules, and map the headers to
|
|
/// 'textual' to match the original intent.
|
|
llvm::SmallPtrSet<Module *, 2> UsesRequiresExcludedHack;
|
|
|
|
/// \brief Consume the current token and return its location.
|
|
SourceLocation consumeToken();
|
|
|
|
/// \brief Skip tokens until we reach the a token with the given kind
|
|
/// (or the end of the file).
|
|
void skipUntil(MMToken::TokenKind K);
|
|
|
|
typedef SmallVector<std::pair<std::string, SourceLocation>, 2> ModuleId;
|
|
bool parseModuleId(ModuleId &Id);
|
|
void parseModuleDecl();
|
|
void parseExternModuleDecl();
|
|
void parseRequiresDecl();
|
|
void parseHeaderDecl(clang::MMToken::TokenKind,
|
|
SourceLocation LeadingLoc);
|
|
void parseUmbrellaDirDecl(SourceLocation UmbrellaLoc);
|
|
void parseExportDecl();
|
|
void parseUseDecl();
|
|
void parseLinkDecl();
|
|
void parseConfigMacros();
|
|
void parseConflict();
|
|
void parseInferredModuleDecl(bool Framework, bool Explicit);
|
|
|
|
typedef ModuleMap::Attributes Attributes;
|
|
bool parseOptionalAttributes(Attributes &Attrs);
|
|
|
|
public:
|
|
explicit ModuleMapParser(Lexer &L, SourceManager &SourceMgr,
|
|
const TargetInfo *Target,
|
|
DiagnosticsEngine &Diags,
|
|
ModuleMap &Map,
|
|
const FileEntry *ModuleMapFile,
|
|
const DirectoryEntry *Directory,
|
|
const DirectoryEntry *BuiltinIncludeDir,
|
|
bool IsSystem)
|
|
: L(L), SourceMgr(SourceMgr), Target(Target), Diags(Diags), Map(Map),
|
|
ModuleMapFile(ModuleMapFile), Directory(Directory),
|
|
BuiltinIncludeDir(BuiltinIncludeDir), IsSystem(IsSystem),
|
|
HadError(false), ActiveModule(nullptr)
|
|
{
|
|
Tok.clear();
|
|
consumeToken();
|
|
}
|
|
|
|
bool parseModuleMapFile();
|
|
};
|
|
}
|
|
|
|
SourceLocation ModuleMapParser::consumeToken() {
|
|
retry:
|
|
SourceLocation Result = Tok.getLocation();
|
|
Tok.clear();
|
|
|
|
Token LToken;
|
|
L.LexFromRawLexer(LToken);
|
|
Tok.Location = LToken.getLocation().getRawEncoding();
|
|
switch (LToken.getKind()) {
|
|
case tok::raw_identifier: {
|
|
StringRef RI = LToken.getRawIdentifier();
|
|
Tok.StringData = RI.data();
|
|
Tok.StringLength = RI.size();
|
|
Tok.Kind = llvm::StringSwitch<MMToken::TokenKind>(RI)
|
|
.Case("config_macros", MMToken::ConfigMacros)
|
|
.Case("conflict", MMToken::Conflict)
|
|
.Case("exclude", MMToken::ExcludeKeyword)
|
|
.Case("explicit", MMToken::ExplicitKeyword)
|
|
.Case("export", MMToken::ExportKeyword)
|
|
.Case("extern", MMToken::ExternKeyword)
|
|
.Case("framework", MMToken::FrameworkKeyword)
|
|
.Case("header", MMToken::HeaderKeyword)
|
|
.Case("link", MMToken::LinkKeyword)
|
|
.Case("module", MMToken::ModuleKeyword)
|
|
.Case("private", MMToken::PrivateKeyword)
|
|
.Case("requires", MMToken::RequiresKeyword)
|
|
.Case("textual", MMToken::TextualKeyword)
|
|
.Case("umbrella", MMToken::UmbrellaKeyword)
|
|
.Case("use", MMToken::UseKeyword)
|
|
.Default(MMToken::Identifier);
|
|
break;
|
|
}
|
|
|
|
case tok::comma:
|
|
Tok.Kind = MMToken::Comma;
|
|
break;
|
|
|
|
case tok::eof:
|
|
Tok.Kind = MMToken::EndOfFile;
|
|
break;
|
|
|
|
case tok::l_brace:
|
|
Tok.Kind = MMToken::LBrace;
|
|
break;
|
|
|
|
case tok::l_square:
|
|
Tok.Kind = MMToken::LSquare;
|
|
break;
|
|
|
|
case tok::period:
|
|
Tok.Kind = MMToken::Period;
|
|
break;
|
|
|
|
case tok::r_brace:
|
|
Tok.Kind = MMToken::RBrace;
|
|
break;
|
|
|
|
case tok::r_square:
|
|
Tok.Kind = MMToken::RSquare;
|
|
break;
|
|
|
|
case tok::star:
|
|
Tok.Kind = MMToken::Star;
|
|
break;
|
|
|
|
case tok::exclaim:
|
|
Tok.Kind = MMToken::Exclaim;
|
|
break;
|
|
|
|
case tok::string_literal: {
|
|
if (LToken.hasUDSuffix()) {
|
|
Diags.Report(LToken.getLocation(), diag::err_invalid_string_udl);
|
|
HadError = true;
|
|
goto retry;
|
|
}
|
|
|
|
// Parse the string literal.
|
|
LangOptions LangOpts;
|
|
StringLiteralParser StringLiteral(LToken, SourceMgr, LangOpts, *Target);
|
|
if (StringLiteral.hadError)
|
|
goto retry;
|
|
|
|
// Copy the string literal into our string data allocator.
|
|
unsigned Length = StringLiteral.GetStringLength();
|
|
char *Saved = StringData.Allocate<char>(Length + 1);
|
|
memcpy(Saved, StringLiteral.GetString().data(), Length);
|
|
Saved[Length] = 0;
|
|
|
|
// Form the token.
|
|
Tok.Kind = MMToken::StringLiteral;
|
|
Tok.StringData = Saved;
|
|
Tok.StringLength = Length;
|
|
break;
|
|
}
|
|
|
|
case tok::comment:
|
|
goto retry;
|
|
|
|
default:
|
|
Diags.Report(LToken.getLocation(), diag::err_mmap_unknown_token);
|
|
HadError = true;
|
|
goto retry;
|
|
}
|
|
|
|
return Result;
|
|
}
|
|
|
|
void ModuleMapParser::skipUntil(MMToken::TokenKind K) {
|
|
unsigned braceDepth = 0;
|
|
unsigned squareDepth = 0;
|
|
do {
|
|
switch (Tok.Kind) {
|
|
case MMToken::EndOfFile:
|
|
return;
|
|
|
|
case MMToken::LBrace:
|
|
if (Tok.is(K) && braceDepth == 0 && squareDepth == 0)
|
|
return;
|
|
|
|
++braceDepth;
|
|
break;
|
|
|
|
case MMToken::LSquare:
|
|
if (Tok.is(K) && braceDepth == 0 && squareDepth == 0)
|
|
return;
|
|
|
|
++squareDepth;
|
|
break;
|
|
|
|
case MMToken::RBrace:
|
|
if (braceDepth > 0)
|
|
--braceDepth;
|
|
else if (Tok.is(K))
|
|
return;
|
|
break;
|
|
|
|
case MMToken::RSquare:
|
|
if (squareDepth > 0)
|
|
--squareDepth;
|
|
else if (Tok.is(K))
|
|
return;
|
|
break;
|
|
|
|
default:
|
|
if (braceDepth == 0 && squareDepth == 0 && Tok.is(K))
|
|
return;
|
|
break;
|
|
}
|
|
|
|
consumeToken();
|
|
} while (true);
|
|
}
|
|
|
|
/// \brief Parse a module-id.
|
|
///
|
|
/// module-id:
|
|
/// identifier
|
|
/// identifier '.' module-id
|
|
///
|
|
/// \returns true if an error occurred, false otherwise.
|
|
bool ModuleMapParser::parseModuleId(ModuleId &Id) {
|
|
Id.clear();
|
|
do {
|
|
if (Tok.is(MMToken::Identifier) || Tok.is(MMToken::StringLiteral)) {
|
|
Id.push_back(std::make_pair(Tok.getString(), Tok.getLocation()));
|
|
consumeToken();
|
|
} else {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_module_name);
|
|
return true;
|
|
}
|
|
|
|
if (!Tok.is(MMToken::Period))
|
|
break;
|
|
|
|
consumeToken();
|
|
} while (true);
|
|
|
|
return false;
|
|
}
|
|
|
|
namespace {
|
|
/// \brief Enumerates the known attributes.
|
|
enum AttributeKind {
|
|
/// \brief An unknown attribute.
|
|
AT_unknown,
|
|
/// \brief The 'system' attribute.
|
|
AT_system,
|
|
/// \brief The 'extern_c' attribute.
|
|
AT_extern_c,
|
|
/// \brief The 'exhaustive' attribute.
|
|
AT_exhaustive
|
|
};
|
|
}
|
|
|
|
/// \brief Parse a module declaration.
|
|
///
|
|
/// module-declaration:
|
|
/// 'extern' 'module' module-id string-literal
|
|
/// 'explicit'[opt] 'framework'[opt] 'module' module-id attributes[opt]
|
|
/// { module-member* }
|
|
///
|
|
/// module-member:
|
|
/// requires-declaration
|
|
/// header-declaration
|
|
/// submodule-declaration
|
|
/// export-declaration
|
|
/// link-declaration
|
|
///
|
|
/// submodule-declaration:
|
|
/// module-declaration
|
|
/// inferred-submodule-declaration
|
|
void ModuleMapParser::parseModuleDecl() {
|
|
assert(Tok.is(MMToken::ExplicitKeyword) || Tok.is(MMToken::ModuleKeyword) ||
|
|
Tok.is(MMToken::FrameworkKeyword) || Tok.is(MMToken::ExternKeyword));
|
|
if (Tok.is(MMToken::ExternKeyword)) {
|
|
parseExternModuleDecl();
|
|
return;
|
|
}
|
|
|
|
// Parse 'explicit' or 'framework' keyword, if present.
|
|
SourceLocation ExplicitLoc;
|
|
bool Explicit = false;
|
|
bool Framework = false;
|
|
|
|
// Parse 'explicit' keyword, if present.
|
|
if (Tok.is(MMToken::ExplicitKeyword)) {
|
|
ExplicitLoc = consumeToken();
|
|
Explicit = true;
|
|
}
|
|
|
|
// Parse 'framework' keyword, if present.
|
|
if (Tok.is(MMToken::FrameworkKeyword)) {
|
|
consumeToken();
|
|
Framework = true;
|
|
}
|
|
|
|
// Parse 'module' keyword.
|
|
if (!Tok.is(MMToken::ModuleKeyword)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_module);
|
|
consumeToken();
|
|
HadError = true;
|
|
return;
|
|
}
|
|
consumeToken(); // 'module' keyword
|
|
|
|
// If we have a wildcard for the module name, this is an inferred submodule.
|
|
// Parse it.
|
|
if (Tok.is(MMToken::Star))
|
|
return parseInferredModuleDecl(Framework, Explicit);
|
|
|
|
// Parse the module name.
|
|
ModuleId Id;
|
|
if (parseModuleId(Id)) {
|
|
HadError = true;
|
|
return;
|
|
}
|
|
|
|
if (ActiveModule) {
|
|
if (Id.size() > 1) {
|
|
Diags.Report(Id.front().second, diag::err_mmap_nested_submodule_id)
|
|
<< SourceRange(Id.front().second, Id.back().second);
|
|
|
|
HadError = true;
|
|
return;
|
|
}
|
|
} else if (Id.size() == 1 && Explicit) {
|
|
// Top-level modules can't be explicit.
|
|
Diags.Report(ExplicitLoc, diag::err_mmap_explicit_top_level);
|
|
Explicit = false;
|
|
ExplicitLoc = SourceLocation();
|
|
HadError = true;
|
|
}
|
|
|
|
Module *PreviousActiveModule = ActiveModule;
|
|
if (Id.size() > 1) {
|
|
// This module map defines a submodule. Go find the module of which it
|
|
// is a submodule.
|
|
ActiveModule = nullptr;
|
|
const Module *TopLevelModule = nullptr;
|
|
for (unsigned I = 0, N = Id.size() - 1; I != N; ++I) {
|
|
if (Module *Next = Map.lookupModuleQualified(Id[I].first, ActiveModule)) {
|
|
if (I == 0)
|
|
TopLevelModule = Next;
|
|
ActiveModule = Next;
|
|
continue;
|
|
}
|
|
|
|
if (ActiveModule) {
|
|
Diags.Report(Id[I].second, diag::err_mmap_missing_module_qualified)
|
|
<< Id[I].first
|
|
<< ActiveModule->getTopLevelModule()->getFullModuleName();
|
|
} else {
|
|
Diags.Report(Id[I].second, diag::err_mmap_expected_module_name);
|
|
}
|
|
HadError = true;
|
|
return;
|
|
}
|
|
|
|
if (ModuleMapFile != Map.getContainingModuleMapFile(TopLevelModule)) {
|
|
assert(ModuleMapFile != Map.getModuleMapFileForUniquing(TopLevelModule) &&
|
|
"submodule defined in same file as 'module *' that allowed its "
|
|
"top-level module");
|
|
Map.addAdditionalModuleMapFile(TopLevelModule, ModuleMapFile);
|
|
}
|
|
}
|
|
|
|
StringRef ModuleName = Id.back().first;
|
|
SourceLocation ModuleNameLoc = Id.back().second;
|
|
|
|
// Parse the optional attribute list.
|
|
Attributes Attrs;
|
|
if (parseOptionalAttributes(Attrs))
|
|
return;
|
|
|
|
|
|
// Parse the opening brace.
|
|
if (!Tok.is(MMToken::LBrace)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_lbrace)
|
|
<< ModuleName;
|
|
HadError = true;
|
|
return;
|
|
}
|
|
SourceLocation LBraceLoc = consumeToken();
|
|
|
|
// Determine whether this (sub)module has already been defined.
|
|
if (Module *Existing = Map.lookupModuleQualified(ModuleName, ActiveModule)) {
|
|
if (Existing->DefinitionLoc.isInvalid() && !ActiveModule) {
|
|
// Skip the module definition.
|
|
skipUntil(MMToken::RBrace);
|
|
if (Tok.is(MMToken::RBrace))
|
|
consumeToken();
|
|
else {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_rbrace);
|
|
Diags.Report(LBraceLoc, diag::note_mmap_lbrace_match);
|
|
HadError = true;
|
|
}
|
|
return;
|
|
}
|
|
|
|
Diags.Report(ModuleNameLoc, diag::err_mmap_module_redefinition)
|
|
<< ModuleName;
|
|
Diags.Report(Existing->DefinitionLoc, diag::note_mmap_prev_definition);
|
|
|
|
// Skip the module definition.
|
|
skipUntil(MMToken::RBrace);
|
|
if (Tok.is(MMToken::RBrace))
|
|
consumeToken();
|
|
|
|
HadError = true;
|
|
return;
|
|
}
|
|
|
|
// Start defining this module.
|
|
ActiveModule = Map.findOrCreateModule(ModuleName, ActiveModule, Framework,
|
|
Explicit).first;
|
|
ActiveModule->DefinitionLoc = ModuleNameLoc;
|
|
if (Attrs.IsSystem || IsSystem)
|
|
ActiveModule->IsSystem = true;
|
|
if (Attrs.IsExternC)
|
|
ActiveModule->IsExternC = true;
|
|
ActiveModule->Directory = Directory;
|
|
|
|
bool Done = false;
|
|
do {
|
|
switch (Tok.Kind) {
|
|
case MMToken::EndOfFile:
|
|
case MMToken::RBrace:
|
|
Done = true;
|
|
break;
|
|
|
|
case MMToken::ConfigMacros:
|
|
parseConfigMacros();
|
|
break;
|
|
|
|
case MMToken::Conflict:
|
|
parseConflict();
|
|
break;
|
|
|
|
case MMToken::ExplicitKeyword:
|
|
case MMToken::ExternKeyword:
|
|
case MMToken::FrameworkKeyword:
|
|
case MMToken::ModuleKeyword:
|
|
parseModuleDecl();
|
|
break;
|
|
|
|
case MMToken::ExportKeyword:
|
|
parseExportDecl();
|
|
break;
|
|
|
|
case MMToken::UseKeyword:
|
|
parseUseDecl();
|
|
break;
|
|
|
|
case MMToken::RequiresKeyword:
|
|
parseRequiresDecl();
|
|
break;
|
|
|
|
case MMToken::TextualKeyword:
|
|
parseHeaderDecl(MMToken::TextualKeyword, consumeToken());
|
|
break;
|
|
|
|
case MMToken::UmbrellaKeyword: {
|
|
SourceLocation UmbrellaLoc = consumeToken();
|
|
if (Tok.is(MMToken::HeaderKeyword))
|
|
parseHeaderDecl(MMToken::UmbrellaKeyword, UmbrellaLoc);
|
|
else
|
|
parseUmbrellaDirDecl(UmbrellaLoc);
|
|
break;
|
|
}
|
|
|
|
case MMToken::ExcludeKeyword:
|
|
parseHeaderDecl(MMToken::ExcludeKeyword, consumeToken());
|
|
break;
|
|
|
|
case MMToken::PrivateKeyword:
|
|
parseHeaderDecl(MMToken::PrivateKeyword, consumeToken());
|
|
break;
|
|
|
|
case MMToken::HeaderKeyword:
|
|
parseHeaderDecl(MMToken::HeaderKeyword, consumeToken());
|
|
break;
|
|
|
|
case MMToken::LinkKeyword:
|
|
parseLinkDecl();
|
|
break;
|
|
|
|
default:
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_member);
|
|
consumeToken();
|
|
break;
|
|
}
|
|
} while (!Done);
|
|
|
|
if (Tok.is(MMToken::RBrace))
|
|
consumeToken();
|
|
else {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_rbrace);
|
|
Diags.Report(LBraceLoc, diag::note_mmap_lbrace_match);
|
|
HadError = true;
|
|
}
|
|
|
|
// If the active module is a top-level framework, and there are no link
|
|
// libraries, automatically link against the framework.
|
|
if (ActiveModule->IsFramework && !ActiveModule->isSubFramework() &&
|
|
ActiveModule->LinkLibraries.empty()) {
|
|
inferFrameworkLink(ActiveModule, Directory, SourceMgr.getFileManager());
|
|
}
|
|
|
|
// If the module meets all requirements but is still unavailable, mark the
|
|
// whole tree as unavailable to prevent it from building.
|
|
if (!ActiveModule->IsAvailable && !ActiveModule->IsMissingRequirement &&
|
|
ActiveModule->Parent) {
|
|
ActiveModule->getTopLevelModule()->markUnavailable();
|
|
ActiveModule->getTopLevelModule()->MissingHeaders.append(
|
|
ActiveModule->MissingHeaders.begin(), ActiveModule->MissingHeaders.end());
|
|
}
|
|
|
|
// We're done parsing this module. Pop back to the previous module.
|
|
ActiveModule = PreviousActiveModule;
|
|
}
|
|
|
|
/// \brief Parse an extern module declaration.
|
|
///
|
|
/// extern module-declaration:
|
|
/// 'extern' 'module' module-id string-literal
|
|
void ModuleMapParser::parseExternModuleDecl() {
|
|
assert(Tok.is(MMToken::ExternKeyword));
|
|
SourceLocation ExternLoc = consumeToken(); // 'extern' keyword
|
|
|
|
// Parse 'module' keyword.
|
|
if (!Tok.is(MMToken::ModuleKeyword)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_module);
|
|
consumeToken();
|
|
HadError = true;
|
|
return;
|
|
}
|
|
consumeToken(); // 'module' keyword
|
|
|
|
// Parse the module name.
|
|
ModuleId Id;
|
|
if (parseModuleId(Id)) {
|
|
HadError = true;
|
|
return;
|
|
}
|
|
|
|
// Parse the referenced module map file name.
|
|
if (!Tok.is(MMToken::StringLiteral)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_mmap_file);
|
|
HadError = true;
|
|
return;
|
|
}
|
|
std::string FileName = Tok.getString();
|
|
consumeToken(); // filename
|
|
|
|
StringRef FileNameRef = FileName;
|
|
SmallString<128> ModuleMapFileName;
|
|
if (llvm::sys::path::is_relative(FileNameRef)) {
|
|
ModuleMapFileName += Directory->getName();
|
|
llvm::sys::path::append(ModuleMapFileName, FileName);
|
|
FileNameRef = ModuleMapFileName;
|
|
}
|
|
if (const FileEntry *File = SourceMgr.getFileManager().getFile(FileNameRef))
|
|
Map.parseModuleMapFile(
|
|
File, /*IsSystem=*/false,
|
|
Map.HeaderInfo.getHeaderSearchOpts().ModuleMapFileHomeIsCwd
|
|
? Directory
|
|
: File->getDir(), ExternLoc);
|
|
}
|
|
|
|
/// Whether to add the requirement \p Feature to the module \p M.
|
|
///
|
|
/// This preserves backwards compatibility for two hacks in the Darwin system
|
|
/// module map files:
|
|
///
|
|
/// 1. The use of 'requires excluded' to make headers non-modular, which
|
|
/// should really be mapped to 'textual' now that we have this feature. We
|
|
/// drop the 'excluded' requirement, and set \p IsRequiresExcludedHack to
|
|
/// true. Later, this bit will be used to map all the headers inside this
|
|
/// module to 'textual'.
|
|
///
|
|
/// This affects Darwin.C.excluded (for assert.h) and Tcl.Private.
|
|
///
|
|
/// 2. Removes a bogus cplusplus requirement from IOKit.avc. This requirement
|
|
/// was never correct and causes issues now that we check it, so drop it.
|
|
static bool shouldAddRequirement(Module *M, StringRef Feature,
|
|
bool &IsRequiresExcludedHack) {
|
|
static const StringRef DarwinCExcluded[] = {"Darwin", "C", "excluded"};
|
|
static const StringRef TclPrivate[] = {"Tcl", "Private"};
|
|
static const StringRef IOKitAVC[] = {"IOKit", "avc"};
|
|
|
|
if (Feature == "excluded" && (M->fullModuleNameIs(DarwinCExcluded) ||
|
|
M->fullModuleNameIs(TclPrivate))) {
|
|
IsRequiresExcludedHack = true;
|
|
return false;
|
|
} else if (Feature == "cplusplus" && M->fullModuleNameIs(IOKitAVC)) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/// \brief Parse a requires declaration.
|
|
///
|
|
/// requires-declaration:
|
|
/// 'requires' feature-list
|
|
///
|
|
/// feature-list:
|
|
/// feature ',' feature-list
|
|
/// feature
|
|
///
|
|
/// feature:
|
|
/// '!'[opt] identifier
|
|
void ModuleMapParser::parseRequiresDecl() {
|
|
assert(Tok.is(MMToken::RequiresKeyword));
|
|
|
|
// Parse 'requires' keyword.
|
|
consumeToken();
|
|
|
|
// Parse the feature-list.
|
|
do {
|
|
bool RequiredState = true;
|
|
if (Tok.is(MMToken::Exclaim)) {
|
|
RequiredState = false;
|
|
consumeToken();
|
|
}
|
|
|
|
if (!Tok.is(MMToken::Identifier)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_feature);
|
|
HadError = true;
|
|
return;
|
|
}
|
|
|
|
// Consume the feature name.
|
|
std::string Feature = Tok.getString();
|
|
consumeToken();
|
|
|
|
bool IsRequiresExcludedHack = false;
|
|
bool ShouldAddRequirement =
|
|
shouldAddRequirement(ActiveModule, Feature, IsRequiresExcludedHack);
|
|
|
|
if (IsRequiresExcludedHack)
|
|
UsesRequiresExcludedHack.insert(ActiveModule);
|
|
|
|
if (ShouldAddRequirement) {
|
|
// Add this feature.
|
|
ActiveModule->addRequirement(Feature, RequiredState, Map.LangOpts,
|
|
*Map.Target);
|
|
}
|
|
|
|
if (!Tok.is(MMToken::Comma))
|
|
break;
|
|
|
|
// Consume the comma.
|
|
consumeToken();
|
|
} while (true);
|
|
}
|
|
|
|
/// \brief Append to \p Paths the set of paths needed to get to the
|
|
/// subframework in which the given module lives.
|
|
static void appendSubframeworkPaths(Module *Mod,
|
|
SmallVectorImpl<char> &Path) {
|
|
// Collect the framework names from the given module to the top-level module.
|
|
SmallVector<StringRef, 2> Paths;
|
|
for (; Mod; Mod = Mod->Parent) {
|
|
if (Mod->IsFramework)
|
|
Paths.push_back(Mod->Name);
|
|
}
|
|
|
|
if (Paths.empty())
|
|
return;
|
|
|
|
// Add Frameworks/Name.framework for each subframework.
|
|
for (unsigned I = Paths.size() - 1; I != 0; --I)
|
|
llvm::sys::path::append(Path, "Frameworks", Paths[I-1] + ".framework");
|
|
}
|
|
|
|
/// \brief Parse a header declaration.
|
|
///
|
|
/// header-declaration:
|
|
/// 'textual'[opt] 'header' string-literal
|
|
/// 'private' 'textual'[opt] 'header' string-literal
|
|
/// 'exclude' 'header' string-literal
|
|
/// 'umbrella' 'header' string-literal
|
|
///
|
|
/// FIXME: Support 'private textual header'.
|
|
void ModuleMapParser::parseHeaderDecl(MMToken::TokenKind LeadingToken,
|
|
SourceLocation LeadingLoc) {
|
|
// We've already consumed the first token.
|
|
ModuleMap::ModuleHeaderRole Role = ModuleMap::NormalHeader;
|
|
if (LeadingToken == MMToken::PrivateKeyword) {
|
|
Role = ModuleMap::PrivateHeader;
|
|
// 'private' may optionally be followed by 'textual'.
|
|
if (Tok.is(MMToken::TextualKeyword)) {
|
|
LeadingToken = Tok.Kind;
|
|
consumeToken();
|
|
}
|
|
}
|
|
|
|
if (LeadingToken == MMToken::TextualKeyword)
|
|
Role = ModuleMap::ModuleHeaderRole(Role | ModuleMap::TextualHeader);
|
|
|
|
if (UsesRequiresExcludedHack.count(ActiveModule)) {
|
|
// Mark this header 'textual' (see doc comment for
|
|
// Module::UsesRequiresExcludedHack).
|
|
Role = ModuleMap::ModuleHeaderRole(Role | ModuleMap::TextualHeader);
|
|
}
|
|
|
|
if (LeadingToken != MMToken::HeaderKeyword) {
|
|
if (!Tok.is(MMToken::HeaderKeyword)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_header)
|
|
<< (LeadingToken == MMToken::PrivateKeyword ? "private" :
|
|
LeadingToken == MMToken::ExcludeKeyword ? "exclude" :
|
|
LeadingToken == MMToken::TextualKeyword ? "textual" : "umbrella");
|
|
return;
|
|
}
|
|
consumeToken();
|
|
}
|
|
|
|
// Parse the header name.
|
|
if (!Tok.is(MMToken::StringLiteral)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_header)
|
|
<< "header";
|
|
HadError = true;
|
|
return;
|
|
}
|
|
Module::UnresolvedHeaderDirective Header;
|
|
Header.FileName = Tok.getString();
|
|
Header.FileNameLoc = consumeToken();
|
|
|
|
// Check whether we already have an umbrella.
|
|
if (LeadingToken == MMToken::UmbrellaKeyword && ActiveModule->Umbrella) {
|
|
Diags.Report(Header.FileNameLoc, diag::err_mmap_umbrella_clash)
|
|
<< ActiveModule->getFullModuleName();
|
|
HadError = true;
|
|
return;
|
|
}
|
|
|
|
// Look for this file.
|
|
const FileEntry *File = nullptr;
|
|
const FileEntry *BuiltinFile = nullptr;
|
|
SmallString<128> RelativePathName;
|
|
if (llvm::sys::path::is_absolute(Header.FileName)) {
|
|
RelativePathName = Header.FileName;
|
|
File = SourceMgr.getFileManager().getFile(RelativePathName);
|
|
} else {
|
|
// Search for the header file within the search directory.
|
|
SmallString<128> FullPathName(Directory->getName());
|
|
unsigned FullPathLength = FullPathName.size();
|
|
|
|
if (ActiveModule->isPartOfFramework()) {
|
|
appendSubframeworkPaths(ActiveModule, RelativePathName);
|
|
|
|
// Check whether this file is in the public headers.
|
|
llvm::sys::path::append(RelativePathName, "Headers", Header.FileName);
|
|
llvm::sys::path::append(FullPathName, RelativePathName);
|
|
File = SourceMgr.getFileManager().getFile(FullPathName);
|
|
|
|
if (!File) {
|
|
// Check whether this file is in the private headers.
|
|
// FIXME: Should we retain the subframework paths here?
|
|
RelativePathName.clear();
|
|
FullPathName.resize(FullPathLength);
|
|
llvm::sys::path::append(RelativePathName, "PrivateHeaders",
|
|
Header.FileName);
|
|
llvm::sys::path::append(FullPathName, RelativePathName);
|
|
File = SourceMgr.getFileManager().getFile(FullPathName);
|
|
}
|
|
} else {
|
|
// Lookup for normal headers.
|
|
llvm::sys::path::append(RelativePathName, Header.FileName);
|
|
llvm::sys::path::append(FullPathName, RelativePathName);
|
|
File = SourceMgr.getFileManager().getFile(FullPathName);
|
|
|
|
// If this is a system module with a top-level header, this header
|
|
// may have a counterpart (or replacement) in the set of headers
|
|
// supplied by Clang. Find that builtin header.
|
|
if (ActiveModule->IsSystem && LeadingToken != MMToken::UmbrellaKeyword &&
|
|
BuiltinIncludeDir && BuiltinIncludeDir != Directory &&
|
|
isBuiltinHeader(Header.FileName)) {
|
|
SmallString<128> BuiltinPathName(BuiltinIncludeDir->getName());
|
|
llvm::sys::path::append(BuiltinPathName, Header.FileName);
|
|
BuiltinFile = SourceMgr.getFileManager().getFile(BuiltinPathName);
|
|
|
|
// If Clang supplies this header but the underlying system does not,
|
|
// just silently swap in our builtin version. Otherwise, we'll end
|
|
// up adding both (later).
|
|
//
|
|
// For local visibility, entirely replace the system file with our
|
|
// one and textually include the system one. We need to pass macros
|
|
// from our header to the system one if we #include_next it.
|
|
//
|
|
// FIXME: Can we do this in all cases?
|
|
if (BuiltinFile && (!File || Map.LangOpts.ModulesLocalVisibility)) {
|
|
File = BuiltinFile;
|
|
RelativePathName = BuiltinPathName;
|
|
BuiltinFile = nullptr;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// FIXME: We shouldn't be eagerly stat'ing every file named in a module map.
|
|
// Come up with a lazy way to do this.
|
|
if (File) {
|
|
if (LeadingToken == MMToken::UmbrellaKeyword) {
|
|
const DirectoryEntry *UmbrellaDir = File->getDir();
|
|
if (Module *UmbrellaModule = Map.UmbrellaDirs[UmbrellaDir]) {
|
|
Diags.Report(LeadingLoc, diag::err_mmap_umbrella_clash)
|
|
<< UmbrellaModule->getFullModuleName();
|
|
HadError = true;
|
|
} else {
|
|
// Record this umbrella header.
|
|
Map.setUmbrellaHeader(ActiveModule, File, RelativePathName.str());
|
|
}
|
|
} else if (LeadingToken == MMToken::ExcludeKeyword) {
|
|
Module::Header H = {RelativePathName.str(), File};
|
|
Map.excludeHeader(ActiveModule, H);
|
|
} else {
|
|
// If there is a builtin counterpart to this file, add it now, before
|
|
// the "real" header, so we build the built-in one first when building
|
|
// the module.
|
|
if (BuiltinFile) {
|
|
// FIXME: Taking the name from the FileEntry is unstable and can give
|
|
// different results depending on how we've previously named that file
|
|
// in this build.
|
|
Module::Header H = { BuiltinFile->getName(), BuiltinFile };
|
|
Map.addHeader(ActiveModule, H, Role);
|
|
}
|
|
|
|
// Record this header.
|
|
Module::Header H = { RelativePathName.str(), File };
|
|
Map.addHeader(ActiveModule, H, Role);
|
|
}
|
|
} else if (LeadingToken != MMToken::ExcludeKeyword) {
|
|
// Ignore excluded header files. They're optional anyway.
|
|
|
|
// If we find a module that has a missing header, we mark this module as
|
|
// unavailable and store the header directive for displaying diagnostics.
|
|
Header.IsUmbrella = LeadingToken == MMToken::UmbrellaKeyword;
|
|
ActiveModule->markUnavailable();
|
|
ActiveModule->MissingHeaders.push_back(Header);
|
|
}
|
|
}
|
|
|
|
static int compareModuleHeaders(const Module::Header *A,
|
|
const Module::Header *B) {
|
|
return A->NameAsWritten.compare(B->NameAsWritten);
|
|
}
|
|
|
|
/// \brief Parse an umbrella directory declaration.
|
|
///
|
|
/// umbrella-dir-declaration:
|
|
/// umbrella string-literal
|
|
void ModuleMapParser::parseUmbrellaDirDecl(SourceLocation UmbrellaLoc) {
|
|
// Parse the directory name.
|
|
if (!Tok.is(MMToken::StringLiteral)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_header)
|
|
<< "umbrella";
|
|
HadError = true;
|
|
return;
|
|
}
|
|
|
|
std::string DirName = Tok.getString();
|
|
SourceLocation DirNameLoc = consumeToken();
|
|
|
|
// Check whether we already have an umbrella.
|
|
if (ActiveModule->Umbrella) {
|
|
Diags.Report(DirNameLoc, diag::err_mmap_umbrella_clash)
|
|
<< ActiveModule->getFullModuleName();
|
|
HadError = true;
|
|
return;
|
|
}
|
|
|
|
// Look for this file.
|
|
const DirectoryEntry *Dir = nullptr;
|
|
if (llvm::sys::path::is_absolute(DirName))
|
|
Dir = SourceMgr.getFileManager().getDirectory(DirName);
|
|
else {
|
|
SmallString<128> PathName;
|
|
PathName = Directory->getName();
|
|
llvm::sys::path::append(PathName, DirName);
|
|
Dir = SourceMgr.getFileManager().getDirectory(PathName);
|
|
}
|
|
|
|
if (!Dir) {
|
|
Diags.Report(DirNameLoc, diag::err_mmap_umbrella_dir_not_found)
|
|
<< DirName;
|
|
HadError = true;
|
|
return;
|
|
}
|
|
|
|
if (UsesRequiresExcludedHack.count(ActiveModule)) {
|
|
// Mark this header 'textual' (see doc comment for
|
|
// ModuleMapParser::UsesRequiresExcludedHack). Although iterating over the
|
|
// directory is relatively expensive, in practice this only applies to the
|
|
// uncommonly used Tcl module on Darwin platforms.
|
|
std::error_code EC;
|
|
SmallVector<Module::Header, 6> Headers;
|
|
vfs::FileSystem &FS = *SourceMgr.getFileManager().getVirtualFileSystem();
|
|
for (vfs::recursive_directory_iterator I(FS, Dir->getName(), EC), E;
|
|
I != E && !EC; I.increment(EC)) {
|
|
if (const FileEntry *FE =
|
|
SourceMgr.getFileManager().getFile(I->getName())) {
|
|
|
|
Module::Header Header = {I->getName(), FE};
|
|
Headers.push_back(std::move(Header));
|
|
}
|
|
}
|
|
|
|
// Sort header paths so that the pcm doesn't depend on iteration order.
|
|
llvm::array_pod_sort(Headers.begin(), Headers.end(), compareModuleHeaders);
|
|
|
|
for (auto &Header : Headers)
|
|
Map.addHeader(ActiveModule, std::move(Header), ModuleMap::TextualHeader);
|
|
return;
|
|
}
|
|
|
|
if (Module *OwningModule = Map.UmbrellaDirs[Dir]) {
|
|
Diags.Report(UmbrellaLoc, diag::err_mmap_umbrella_clash)
|
|
<< OwningModule->getFullModuleName();
|
|
HadError = true;
|
|
return;
|
|
}
|
|
|
|
// Record this umbrella directory.
|
|
Map.setUmbrellaDir(ActiveModule, Dir, DirName);
|
|
}
|
|
|
|
/// \brief Parse a module export declaration.
|
|
///
|
|
/// export-declaration:
|
|
/// 'export' wildcard-module-id
|
|
///
|
|
/// wildcard-module-id:
|
|
/// identifier
|
|
/// '*'
|
|
/// identifier '.' wildcard-module-id
|
|
void ModuleMapParser::parseExportDecl() {
|
|
assert(Tok.is(MMToken::ExportKeyword));
|
|
SourceLocation ExportLoc = consumeToken();
|
|
|
|
// Parse the module-id with an optional wildcard at the end.
|
|
ModuleId ParsedModuleId;
|
|
bool Wildcard = false;
|
|
do {
|
|
// FIXME: Support string-literal module names here.
|
|
if (Tok.is(MMToken::Identifier)) {
|
|
ParsedModuleId.push_back(std::make_pair(Tok.getString(),
|
|
Tok.getLocation()));
|
|
consumeToken();
|
|
|
|
if (Tok.is(MMToken::Period)) {
|
|
consumeToken();
|
|
continue;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if(Tok.is(MMToken::Star)) {
|
|
Wildcard = true;
|
|
consumeToken();
|
|
break;
|
|
}
|
|
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_module_id);
|
|
HadError = true;
|
|
return;
|
|
} while (true);
|
|
|
|
Module::UnresolvedExportDecl Unresolved = {
|
|
ExportLoc, ParsedModuleId, Wildcard
|
|
};
|
|
ActiveModule->UnresolvedExports.push_back(Unresolved);
|
|
}
|
|
|
|
/// \brief Parse a module use declaration.
|
|
///
|
|
/// use-declaration:
|
|
/// 'use' wildcard-module-id
|
|
void ModuleMapParser::parseUseDecl() {
|
|
assert(Tok.is(MMToken::UseKeyword));
|
|
auto KWLoc = consumeToken();
|
|
// Parse the module-id.
|
|
ModuleId ParsedModuleId;
|
|
parseModuleId(ParsedModuleId);
|
|
|
|
if (ActiveModule->Parent)
|
|
Diags.Report(KWLoc, diag::err_mmap_use_decl_submodule);
|
|
else
|
|
ActiveModule->UnresolvedDirectUses.push_back(ParsedModuleId);
|
|
}
|
|
|
|
/// \brief Parse a link declaration.
|
|
///
|
|
/// module-declaration:
|
|
/// 'link' 'framework'[opt] string-literal
|
|
void ModuleMapParser::parseLinkDecl() {
|
|
assert(Tok.is(MMToken::LinkKeyword));
|
|
SourceLocation LinkLoc = consumeToken();
|
|
|
|
// Parse the optional 'framework' keyword.
|
|
bool IsFramework = false;
|
|
if (Tok.is(MMToken::FrameworkKeyword)) {
|
|
consumeToken();
|
|
IsFramework = true;
|
|
}
|
|
|
|
// Parse the library name
|
|
if (!Tok.is(MMToken::StringLiteral)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_library_name)
|
|
<< IsFramework << SourceRange(LinkLoc);
|
|
HadError = true;
|
|
return;
|
|
}
|
|
|
|
std::string LibraryName = Tok.getString();
|
|
consumeToken();
|
|
ActiveModule->LinkLibraries.push_back(Module::LinkLibrary(LibraryName,
|
|
IsFramework));
|
|
}
|
|
|
|
/// \brief Parse a configuration macro declaration.
|
|
///
|
|
/// module-declaration:
|
|
/// 'config_macros' attributes[opt] config-macro-list?
|
|
///
|
|
/// config-macro-list:
|
|
/// identifier (',' identifier)?
|
|
void ModuleMapParser::parseConfigMacros() {
|
|
assert(Tok.is(MMToken::ConfigMacros));
|
|
SourceLocation ConfigMacrosLoc = consumeToken();
|
|
|
|
// Only top-level modules can have configuration macros.
|
|
if (ActiveModule->Parent) {
|
|
Diags.Report(ConfigMacrosLoc, diag::err_mmap_config_macro_submodule);
|
|
}
|
|
|
|
// Parse the optional attributes.
|
|
Attributes Attrs;
|
|
if (parseOptionalAttributes(Attrs))
|
|
return;
|
|
|
|
if (Attrs.IsExhaustive && !ActiveModule->Parent) {
|
|
ActiveModule->ConfigMacrosExhaustive = true;
|
|
}
|
|
|
|
// If we don't have an identifier, we're done.
|
|
// FIXME: Support macros with the same name as a keyword here.
|
|
if (!Tok.is(MMToken::Identifier))
|
|
return;
|
|
|
|
// Consume the first identifier.
|
|
if (!ActiveModule->Parent) {
|
|
ActiveModule->ConfigMacros.push_back(Tok.getString().str());
|
|
}
|
|
consumeToken();
|
|
|
|
do {
|
|
// If there's a comma, consume it.
|
|
if (!Tok.is(MMToken::Comma))
|
|
break;
|
|
consumeToken();
|
|
|
|
// We expect to see a macro name here.
|
|
// FIXME: Support macros with the same name as a keyword here.
|
|
if (!Tok.is(MMToken::Identifier)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_config_macro);
|
|
break;
|
|
}
|
|
|
|
// Consume the macro name.
|
|
if (!ActiveModule->Parent) {
|
|
ActiveModule->ConfigMacros.push_back(Tok.getString().str());
|
|
}
|
|
consumeToken();
|
|
} while (true);
|
|
}
|
|
|
|
/// \brief Format a module-id into a string.
|
|
static std::string formatModuleId(const ModuleId &Id) {
|
|
std::string result;
|
|
{
|
|
llvm::raw_string_ostream OS(result);
|
|
|
|
for (unsigned I = 0, N = Id.size(); I != N; ++I) {
|
|
if (I)
|
|
OS << ".";
|
|
OS << Id[I].first;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/// \brief Parse a conflict declaration.
|
|
///
|
|
/// module-declaration:
|
|
/// 'conflict' module-id ',' string-literal
|
|
void ModuleMapParser::parseConflict() {
|
|
assert(Tok.is(MMToken::Conflict));
|
|
SourceLocation ConflictLoc = consumeToken();
|
|
Module::UnresolvedConflict Conflict;
|
|
|
|
// Parse the module-id.
|
|
if (parseModuleId(Conflict.Id))
|
|
return;
|
|
|
|
// Parse the ','.
|
|
if (!Tok.is(MMToken::Comma)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_conflicts_comma)
|
|
<< SourceRange(ConflictLoc);
|
|
return;
|
|
}
|
|
consumeToken();
|
|
|
|
// Parse the message.
|
|
if (!Tok.is(MMToken::StringLiteral)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_conflicts_message)
|
|
<< formatModuleId(Conflict.Id);
|
|
return;
|
|
}
|
|
Conflict.Message = Tok.getString().str();
|
|
consumeToken();
|
|
|
|
// Add this unresolved conflict.
|
|
ActiveModule->UnresolvedConflicts.push_back(Conflict);
|
|
}
|
|
|
|
/// \brief Parse an inferred module declaration (wildcard modules).
|
|
///
|
|
/// module-declaration:
|
|
/// 'explicit'[opt] 'framework'[opt] 'module' * attributes[opt]
|
|
/// { inferred-module-member* }
|
|
///
|
|
/// inferred-module-member:
|
|
/// 'export' '*'
|
|
/// 'exclude' identifier
|
|
void ModuleMapParser::parseInferredModuleDecl(bool Framework, bool Explicit) {
|
|
assert(Tok.is(MMToken::Star));
|
|
SourceLocation StarLoc = consumeToken();
|
|
bool Failed = false;
|
|
|
|
// Inferred modules must be submodules.
|
|
if (!ActiveModule && !Framework) {
|
|
Diags.Report(StarLoc, diag::err_mmap_top_level_inferred_submodule);
|
|
Failed = true;
|
|
}
|
|
|
|
if (ActiveModule) {
|
|
// Inferred modules must have umbrella directories.
|
|
if (!Failed && ActiveModule->IsAvailable &&
|
|
!ActiveModule->getUmbrellaDir()) {
|
|
Diags.Report(StarLoc, diag::err_mmap_inferred_no_umbrella);
|
|
Failed = true;
|
|
}
|
|
|
|
// Check for redefinition of an inferred module.
|
|
if (!Failed && ActiveModule->InferSubmodules) {
|
|
Diags.Report(StarLoc, diag::err_mmap_inferred_redef);
|
|
if (ActiveModule->InferredSubmoduleLoc.isValid())
|
|
Diags.Report(ActiveModule->InferredSubmoduleLoc,
|
|
diag::note_mmap_prev_definition);
|
|
Failed = true;
|
|
}
|
|
|
|
// Check for the 'framework' keyword, which is not permitted here.
|
|
if (Framework) {
|
|
Diags.Report(StarLoc, diag::err_mmap_inferred_framework_submodule);
|
|
Framework = false;
|
|
}
|
|
} else if (Explicit) {
|
|
Diags.Report(StarLoc, diag::err_mmap_explicit_inferred_framework);
|
|
Explicit = false;
|
|
}
|
|
|
|
// If there were any problems with this inferred submodule, skip its body.
|
|
if (Failed) {
|
|
if (Tok.is(MMToken::LBrace)) {
|
|
consumeToken();
|
|
skipUntil(MMToken::RBrace);
|
|
if (Tok.is(MMToken::RBrace))
|
|
consumeToken();
|
|
}
|
|
HadError = true;
|
|
return;
|
|
}
|
|
|
|
// Parse optional attributes.
|
|
Attributes Attrs;
|
|
if (parseOptionalAttributes(Attrs))
|
|
return;
|
|
|
|
if (ActiveModule) {
|
|
// Note that we have an inferred submodule.
|
|
ActiveModule->InferSubmodules = true;
|
|
ActiveModule->InferredSubmoduleLoc = StarLoc;
|
|
ActiveModule->InferExplicitSubmodules = Explicit;
|
|
} else {
|
|
// We'll be inferring framework modules for this directory.
|
|
Map.InferredDirectories[Directory].InferModules = true;
|
|
Map.InferredDirectories[Directory].Attrs = Attrs;
|
|
Map.InferredDirectories[Directory].ModuleMapFile = ModuleMapFile;
|
|
// FIXME: Handle the 'framework' keyword.
|
|
}
|
|
|
|
// Parse the opening brace.
|
|
if (!Tok.is(MMToken::LBrace)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_lbrace_wildcard);
|
|
HadError = true;
|
|
return;
|
|
}
|
|
SourceLocation LBraceLoc = consumeToken();
|
|
|
|
// Parse the body of the inferred submodule.
|
|
bool Done = false;
|
|
do {
|
|
switch (Tok.Kind) {
|
|
case MMToken::EndOfFile:
|
|
case MMToken::RBrace:
|
|
Done = true;
|
|
break;
|
|
|
|
case MMToken::ExcludeKeyword: {
|
|
if (ActiveModule) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_inferred_member)
|
|
<< (ActiveModule != nullptr);
|
|
consumeToken();
|
|
break;
|
|
}
|
|
|
|
consumeToken();
|
|
// FIXME: Support string-literal module names here.
|
|
if (!Tok.is(MMToken::Identifier)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_missing_exclude_name);
|
|
break;
|
|
}
|
|
|
|
Map.InferredDirectories[Directory].ExcludedModules
|
|
.push_back(Tok.getString());
|
|
consumeToken();
|
|
break;
|
|
}
|
|
|
|
case MMToken::ExportKeyword:
|
|
if (!ActiveModule) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_inferred_member)
|
|
<< (ActiveModule != nullptr);
|
|
consumeToken();
|
|
break;
|
|
}
|
|
|
|
consumeToken();
|
|
if (Tok.is(MMToken::Star))
|
|
ActiveModule->InferExportWildcard = true;
|
|
else
|
|
Diags.Report(Tok.getLocation(),
|
|
diag::err_mmap_expected_export_wildcard);
|
|
consumeToken();
|
|
break;
|
|
|
|
case MMToken::ExplicitKeyword:
|
|
case MMToken::ModuleKeyword:
|
|
case MMToken::HeaderKeyword:
|
|
case MMToken::PrivateKeyword:
|
|
case MMToken::UmbrellaKeyword:
|
|
default:
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_inferred_member)
|
|
<< (ActiveModule != nullptr);
|
|
consumeToken();
|
|
break;
|
|
}
|
|
} while (!Done);
|
|
|
|
if (Tok.is(MMToken::RBrace))
|
|
consumeToken();
|
|
else {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_rbrace);
|
|
Diags.Report(LBraceLoc, diag::note_mmap_lbrace_match);
|
|
HadError = true;
|
|
}
|
|
}
|
|
|
|
/// \brief Parse optional attributes.
|
|
///
|
|
/// attributes:
|
|
/// attribute attributes
|
|
/// attribute
|
|
///
|
|
/// attribute:
|
|
/// [ identifier ]
|
|
///
|
|
/// \param Attrs Will be filled in with the parsed attributes.
|
|
///
|
|
/// \returns true if an error occurred, false otherwise.
|
|
bool ModuleMapParser::parseOptionalAttributes(Attributes &Attrs) {
|
|
bool HadError = false;
|
|
|
|
while (Tok.is(MMToken::LSquare)) {
|
|
// Consume the '['.
|
|
SourceLocation LSquareLoc = consumeToken();
|
|
|
|
// Check whether we have an attribute name here.
|
|
if (!Tok.is(MMToken::Identifier)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_attribute);
|
|
skipUntil(MMToken::RSquare);
|
|
if (Tok.is(MMToken::RSquare))
|
|
consumeToken();
|
|
HadError = true;
|
|
}
|
|
|
|
// Decode the attribute name.
|
|
AttributeKind Attribute
|
|
= llvm::StringSwitch<AttributeKind>(Tok.getString())
|
|
.Case("exhaustive", AT_exhaustive)
|
|
.Case("extern_c", AT_extern_c)
|
|
.Case("system", AT_system)
|
|
.Default(AT_unknown);
|
|
switch (Attribute) {
|
|
case AT_unknown:
|
|
Diags.Report(Tok.getLocation(), diag::warn_mmap_unknown_attribute)
|
|
<< Tok.getString();
|
|
break;
|
|
|
|
case AT_system:
|
|
Attrs.IsSystem = true;
|
|
break;
|
|
|
|
case AT_extern_c:
|
|
Attrs.IsExternC = true;
|
|
break;
|
|
|
|
case AT_exhaustive:
|
|
Attrs.IsExhaustive = true;
|
|
break;
|
|
}
|
|
consumeToken();
|
|
|
|
// Consume the ']'.
|
|
if (!Tok.is(MMToken::RSquare)) {
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_rsquare);
|
|
Diags.Report(LSquareLoc, diag::note_mmap_lsquare_match);
|
|
skipUntil(MMToken::RSquare);
|
|
HadError = true;
|
|
}
|
|
|
|
if (Tok.is(MMToken::RSquare))
|
|
consumeToken();
|
|
}
|
|
|
|
return HadError;
|
|
}
|
|
|
|
/// \brief Parse a module map file.
|
|
///
|
|
/// module-map-file:
|
|
/// module-declaration*
|
|
bool ModuleMapParser::parseModuleMapFile() {
|
|
do {
|
|
switch (Tok.Kind) {
|
|
case MMToken::EndOfFile:
|
|
return HadError;
|
|
|
|
case MMToken::ExplicitKeyword:
|
|
case MMToken::ExternKeyword:
|
|
case MMToken::ModuleKeyword:
|
|
case MMToken::FrameworkKeyword:
|
|
parseModuleDecl();
|
|
break;
|
|
|
|
case MMToken::Comma:
|
|
case MMToken::ConfigMacros:
|
|
case MMToken::Conflict:
|
|
case MMToken::Exclaim:
|
|
case MMToken::ExcludeKeyword:
|
|
case MMToken::ExportKeyword:
|
|
case MMToken::HeaderKeyword:
|
|
case MMToken::Identifier:
|
|
case MMToken::LBrace:
|
|
case MMToken::LinkKeyword:
|
|
case MMToken::LSquare:
|
|
case MMToken::Period:
|
|
case MMToken::PrivateKeyword:
|
|
case MMToken::RBrace:
|
|
case MMToken::RSquare:
|
|
case MMToken::RequiresKeyword:
|
|
case MMToken::Star:
|
|
case MMToken::StringLiteral:
|
|
case MMToken::TextualKeyword:
|
|
case MMToken::UmbrellaKeyword:
|
|
case MMToken::UseKeyword:
|
|
Diags.Report(Tok.getLocation(), diag::err_mmap_expected_module);
|
|
HadError = true;
|
|
consumeToken();
|
|
break;
|
|
}
|
|
} while (true);
|
|
}
|
|
|
|
bool ModuleMap::parseModuleMapFile(const FileEntry *File, bool IsSystem,
|
|
const DirectoryEntry *Dir,
|
|
SourceLocation ExternModuleLoc) {
|
|
llvm::DenseMap<const FileEntry *, bool>::iterator Known
|
|
= ParsedModuleMap.find(File);
|
|
if (Known != ParsedModuleMap.end())
|
|
return Known->second;
|
|
|
|
assert(Target && "Missing target information");
|
|
auto FileCharacter = IsSystem ? SrcMgr::C_System : SrcMgr::C_User;
|
|
FileID ID = SourceMgr.createFileID(File, ExternModuleLoc, FileCharacter);
|
|
const llvm::MemoryBuffer *Buffer = SourceMgr.getBuffer(ID);
|
|
if (!Buffer)
|
|
return ParsedModuleMap[File] = true;
|
|
|
|
// Parse this module map file.
|
|
Lexer L(ID, SourceMgr.getBuffer(ID), SourceMgr, MMapLangOpts);
|
|
SourceLocation Start = L.getSourceLocation();
|
|
ModuleMapParser Parser(L, SourceMgr, Target, Diags, *this, File, Dir,
|
|
BuiltinIncludeDir, IsSystem);
|
|
bool Result = Parser.parseModuleMapFile();
|
|
ParsedModuleMap[File] = Result;
|
|
|
|
// Notify callbacks that we parsed it.
|
|
for (const auto &Cb : Callbacks)
|
|
Cb->moduleMapFileRead(Start, *File, IsSystem);
|
|
return Result;
|
|
}
|