clang  6.0.0svn
Module.h
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1 //===- Module.h - Describe a module -----------------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 /// \file
11 /// \brief Defines the clang::Module class, which describes a module in the
12 /// source code.
13 //
14 //===----------------------------------------------------------------------===//
15 
16 #ifndef LLVM_CLANG_BASIC_MODULE_H
17 #define LLVM_CLANG_BASIC_MODULE_H
18 
21 #include "llvm/ADT/ArrayRef.h"
22 #include "llvm/ADT/DenseSet.h"
23 #include "llvm/ADT/Optional.h"
24 #include "llvm/ADT/PointerIntPair.h"
25 #include "llvm/ADT/PointerUnion.h"
26 #include "llvm/ADT/SetVector.h"
27 #include "llvm/ADT/SmallVector.h"
28 #include "llvm/ADT/STLExtras.h"
29 #include "llvm/ADT/StringMap.h"
30 #include "llvm/ADT/StringRef.h"
31 #include "llvm/ADT/iterator_range.h"
32 #include <array>
33 #include <cassert>
34 #include <cstdint>
35 #include <ctime>
36 #include <string>
37 #include <utility>
38 #include <vector>
39 
40 namespace llvm {
41 
42 class raw_ostream;
43 
44 } // namespace llvm
45 
46 namespace clang {
47 
48 class LangOptions;
49 class TargetInfo;
50 
51 /// \brief Describes the name of a module.
53 
54 /// The signature of a module, which is a hash of the AST content.
55 struct ASTFileSignature : std::array<uint32_t, 5> {
56  ASTFileSignature(std::array<uint32_t, 5> S = {{0}})
57  : std::array<uint32_t, 5>(std::move(S)) {}
58 
59  explicit operator bool() const {
60  return *this != std::array<uint32_t, 5>({{0}});
61  }
62 };
63 
64 /// \brief Describes a module or submodule.
65 class Module {
66 public:
67  /// \brief The name of this module.
68  std::string Name;
69 
70  /// \brief The location of the module definition.
72 
73  enum ModuleKind {
74  /// \brief This is a module that was defined by a module map and built out
75  /// of header files.
77 
78  /// \brief This is a C++ Modules TS module interface unit.
80 
81  /// \brief This is a fragment of the global module within some C++ Modules
82  /// TS module.
84  };
85 
86  /// \brief The kind of this module.
87  ModuleKind Kind = ModuleMapModule;
88 
89  /// \brief The parent of this module. This will be NULL for the top-level
90  /// module.
92 
93  /// \brief The build directory of this module. This is the directory in
94  /// which the module is notionally built, and relative to which its headers
95  /// are found.
96  const DirectoryEntry *Directory = nullptr;
97 
98  /// \brief The presumed file name for the module map defining this module.
99  /// Only non-empty when building from preprocessed source.
101 
102  /// \brief The umbrella header or directory.
103  llvm::PointerUnion<const DirectoryEntry *, const FileEntry *> Umbrella;
104 
105  /// \brief The module signature.
107 
108  /// \brief The name of the umbrella entry, as written in the module map.
109  std::string UmbrellaAsWritten;
110 
111  /// \brief The module through which entities defined in this module will
112  /// eventually be exposed, for use in "private" modules.
113  std::string ExportAsModule;
114 
115 private:
116  /// \brief The submodules of this module, indexed by name.
117  std::vector<Module *> SubModules;
118 
119  /// \brief A mapping from the submodule name to the index into the
120  /// \c SubModules vector at which that submodule resides.
121  llvm::StringMap<unsigned> SubModuleIndex;
122 
123  /// \brief The AST file if this is a top-level module which has a
124  /// corresponding serialized AST file, or null otherwise.
125  const FileEntry *ASTFile = nullptr;
126 
127  /// \brief The top-level headers associated with this module.
129 
130  /// \brief top-level header filenames that aren't resolved to FileEntries yet.
131  std::vector<std::string> TopHeaderNames;
132 
133  /// \brief Cache of modules visible to lookup in this module.
134  mutable llvm::DenseSet<const Module*> VisibleModulesCache;
135 
136  /// The ID used when referencing this module within a VisibleModuleSet.
137  unsigned VisibilityID;
138 
139 public:
140  enum HeaderKind {
145  HK_Excluded
146  };
147  static const int NumHeaderKinds = HK_Excluded + 1;
148 
149  /// \brief Information about a header directive as found in the module map
150  /// file.
151  struct Header {
152  std::string NameAsWritten;
153  const FileEntry *Entry;
154 
155  explicit operator bool() { return Entry; }
156  };
157 
158  /// \brief Information about a directory name as found in the module map
159  /// file.
160  struct DirectoryName {
161  std::string NameAsWritten;
163 
164  explicit operator bool() { return Entry; }
165  };
166 
167  /// \brief The headers that are part of this module.
169 
170  /// \brief Stored information about a header directive that was found in the
171  /// module map file but has not been resolved to a file.
173  HeaderKind Kind = HK_Normal;
175  std::string FileName;
176  bool IsUmbrella = false;
177  bool HasBuiltinHeader = false;
180  };
181 
182  /// Headers that are mentioned in the module map file but that we have not
183  /// yet attempted to resolve to a file on the file system.
185 
186  /// \brief Headers that are mentioned in the module map file but could not be
187  /// found on the file system.
189 
190  /// \brief An individual requirement: a feature name and a flag indicating
191  /// the required state of that feature.
192  using Requirement = std::pair<std::string, bool>;
193 
194  /// \brief The set of language features required to use this module.
195  ///
196  /// If any of these requirements are not available, the \c IsAvailable bit
197  /// will be false to indicate that this (sub)module is not available.
199 
200  /// \brief Whether this module is missing a feature from \c Requirements.
201  unsigned IsMissingRequirement : 1;
202 
203  /// \brief Whether we tried and failed to load a module file for this module.
205 
206  /// \brief Whether this module is available in the current translation unit.
207  ///
208  /// If the module is missing headers or does not meet all requirements then
209  /// this bit will be 0.
210  unsigned IsAvailable : 1;
211 
212  /// \brief Whether this module was loaded from a module file.
213  unsigned IsFromModuleFile : 1;
214 
215  /// \brief Whether this is a framework module.
216  unsigned IsFramework : 1;
217 
218  /// \brief Whether this is an explicit submodule.
219  unsigned IsExplicit : 1;
220 
221  /// \brief Whether this is a "system" module (which assumes that all
222  /// headers in it are system headers).
223  unsigned IsSystem : 1;
224 
225  /// \brief Whether this is an 'extern "C"' module (which implicitly puts all
226  /// headers in it within an 'extern "C"' block, and allows the module to be
227  /// imported within such a block).
228  unsigned IsExternC : 1;
229 
230  /// \brief Whether this is an inferred submodule (module * { ... }).
231  unsigned IsInferred : 1;
232 
233  /// \brief Whether we should infer submodules for this module based on
234  /// the headers.
235  ///
236  /// Submodules can only be inferred for modules with an umbrella header.
237  unsigned InferSubmodules : 1;
238 
239  /// \brief Whether, when inferring submodules, the inferred submodules
240  /// should be explicit.
242 
243  /// \brief Whether, when inferring submodules, the inferr submodules should
244  /// export all modules they import (e.g., the equivalent of "export *").
245  unsigned InferExportWildcard : 1;
246 
247  /// \brief Whether the set of configuration macros is exhaustive.
248  ///
249  /// When the set of configuration macros is exhaustive, meaning
250  /// that no identifier not in this list should affect how the module is
251  /// built.
253 
254  /// \brief Whether files in this module can only include non-modular headers
255  /// and headers from used modules.
256  unsigned NoUndeclaredIncludes : 1;
257 
258  /// \brief Describes the visibility of the various names within a
259  /// particular module.
261  /// \brief All of the names in this module are hidden.
263  /// \brief All of the names in this module are visible.
264  AllVisible
265  };
266 
267  /// \brief The visibility of names within this particular module.
269 
270  /// \brief The location of the inferred submodule.
272 
273  /// \brief The set of modules imported by this module, and on which this
274  /// module depends.
276 
277  /// \brief Describes an exported module.
278  ///
279  /// The pointer is the module being re-exported, while the bit will be true
280  /// to indicate that this is a wildcard export.
281  using ExportDecl = llvm::PointerIntPair<Module *, 1, bool>;
282 
283  /// \brief The set of export declarations.
285 
286  /// \brief Describes an exported module that has not yet been resolved
287  /// (perhaps because the module it refers to has not yet been loaded).
289  /// \brief The location of the 'export' keyword in the module map file.
291 
292  /// \brief The name of the module.
294 
295  /// \brief Whether this export declaration ends in a wildcard, indicating
296  /// that all of its submodules should be exported (rather than the named
297  /// module itself).
298  bool Wildcard;
299  };
300 
301  /// \brief The set of export declarations that have yet to be resolved.
303 
304  /// \brief The directly used modules.
306 
307  /// \brief The set of use declarations that have yet to be resolved.
309 
310  /// \brief A library or framework to link against when an entity from this
311  /// module is used.
312  struct LinkLibrary {
313  LinkLibrary() = default;
314  LinkLibrary(const std::string &Library, bool IsFramework)
315  : Library(Library), IsFramework(IsFramework) {}
316 
317  /// \brief The library to link against.
318  ///
319  /// This will typically be a library or framework name, but can also
320  /// be an absolute path to the library or framework.
321  std::string Library;
322 
323  /// \brief Whether this is a framework rather than a library.
324  bool IsFramework = false;
325  };
326 
327  /// \brief The set of libraries or frameworks to link against when
328  /// an entity from this module is used.
330 
331  /// \brief The set of "configuration macros", which are macros that
332  /// (intentionally) change how this module is built.
333  std::vector<std::string> ConfigMacros;
334 
335  /// \brief An unresolved conflict with another module.
337  /// \brief The (unresolved) module id.
339 
340  /// \brief The message provided to the user when there is a conflict.
341  std::string Message;
342  };
343 
344  /// \brief The list of conflicts for which the module-id has not yet been
345  /// resolved.
346  std::vector<UnresolvedConflict> UnresolvedConflicts;
347 
348  /// \brief A conflict between two modules.
349  struct Conflict {
350  /// \brief The module that this module conflicts with.
352 
353  /// \brief The message provided to the user when there is a conflict.
354  std::string Message;
355  };
356 
357  /// \brief The list of conflicts.
358  std::vector<Conflict> Conflicts;
359 
360  /// \brief Construct a new module or submodule.
361  Module(StringRef Name, SourceLocation DefinitionLoc, Module *Parent,
362  bool IsFramework, bool IsExplicit, unsigned VisibilityID);
363 
364  ~Module();
365 
366  /// \brief Determine whether this module is available for use within the
367  /// current translation unit.
368  bool isAvailable() const { return IsAvailable; }
369 
370  /// \brief Determine whether this module is available for use within the
371  /// current translation unit.
372  ///
373  /// \param LangOpts The language options used for the current
374  /// translation unit.
375  ///
376  /// \param Target The target options used for the current translation unit.
377  ///
378  /// \param Req If this module is unavailable, this parameter
379  /// will be set to one of the requirements that is not met for use of
380  /// this module.
381  bool isAvailable(const LangOptions &LangOpts,
382  const TargetInfo &Target,
383  Requirement &Req,
384  UnresolvedHeaderDirective &MissingHeader) const;
385 
386  /// \brief Determine whether this module is a submodule.
387  bool isSubModule() const { return Parent != nullptr; }
388 
389  /// \brief Determine whether this module is a submodule of the given other
390  /// module.
391  bool isSubModuleOf(const Module *Other) const;
392 
393  /// \brief Determine whether this module is a part of a framework,
394  /// either because it is a framework module or because it is a submodule
395  /// of a framework module.
396  bool isPartOfFramework() const {
397  for (const Module *Mod = this; Mod; Mod = Mod->Parent)
398  if (Mod->IsFramework)
399  return true;
400 
401  return false;
402  }
403 
404  /// \brief Determine whether this module is a subframework of another
405  /// framework.
406  bool isSubFramework() const {
407  return IsFramework && Parent && Parent->isPartOfFramework();
408  }
409 
410  /// Set the parent of this module. This should only be used if the parent
411  /// could not be set during module creation.
412  void setParent(Module *M) {
413  assert(!Parent);
414  Parent = M;
415  Parent->SubModuleIndex[Name] = Parent->SubModules.size();
416  Parent->SubModules.push_back(this);
417  }
418 
419  /// \brief Retrieve the full name of this module, including the path from
420  /// its top-level module.
421  /// \param AllowStringLiterals If \c true, components that might not be
422  /// lexically valid as identifiers will be emitted as string literals.
423  std::string getFullModuleName(bool AllowStringLiterals = false) const;
424 
425  /// \brief Whether the full name of this module is equal to joining
426  /// \p nameParts with "."s.
427  ///
428  /// This is more efficient than getFullModuleName().
429  bool fullModuleNameIs(ArrayRef<StringRef> nameParts) const;
430 
431  /// \brief Retrieve the top-level module for this (sub)module, which may
432  /// be this module.
434  return const_cast<Module *>(
435  const_cast<const Module *>(this)->getTopLevelModule());
436  }
437 
438  /// \brief Retrieve the top-level module for this (sub)module, which may
439  /// be this module.
440  const Module *getTopLevelModule() const;
441 
442  /// \brief Retrieve the name of the top-level module.
443  StringRef getTopLevelModuleName() const {
444  return getTopLevelModule()->Name;
445  }
446 
447  /// \brief The serialized AST file for this module, if one was created.
448  const FileEntry *getASTFile() const {
449  return getTopLevelModule()->ASTFile;
450  }
451 
452  /// \brief Set the serialized AST file for the top-level module of this module.
453  void setASTFile(const FileEntry *File) {
454  assert((File == nullptr || getASTFile() == nullptr ||
455  getASTFile() == File) && "file path changed");
456  getTopLevelModule()->ASTFile = File;
457  }
458 
459  /// \brief Retrieve the directory for which this module serves as the
460  /// umbrella.
461  DirectoryName getUmbrellaDir() const;
462 
463  /// \brief Retrieve the header that serves as the umbrella header for this
464  /// module.
466  if (auto *E = Umbrella.dyn_cast<const FileEntry *>())
467  return Header{UmbrellaAsWritten, E};
468  return Header{};
469  }
470 
471  /// \brief Determine whether this module has an umbrella directory that is
472  /// not based on an umbrella header.
473  bool hasUmbrellaDir() const {
474  return Umbrella && Umbrella.is<const DirectoryEntry *>();
475  }
476 
477  /// \brief Add a top-level header associated with this module.
478  void addTopHeader(const FileEntry *File) {
479  assert(File);
480  TopHeaders.insert(File);
481  }
482 
483  /// \brief Add a top-level header filename associated with this module.
484  void addTopHeaderFilename(StringRef Filename) {
485  TopHeaderNames.push_back(Filename);
486  }
487 
488  /// \brief The top-level headers associated with this module.
489  ArrayRef<const FileEntry *> getTopHeaders(FileManager &FileMgr);
490 
491  /// \brief Determine whether this module has declared its intention to
492  /// directly use another module.
493  bool directlyUses(const Module *Requested) const;
494 
495  /// \brief Add the given feature requirement to the list of features
496  /// required by this module.
497  ///
498  /// \param Feature The feature that is required by this module (and
499  /// its submodules).
500  ///
501  /// \param RequiredState The required state of this feature: \c true
502  /// if it must be present, \c false if it must be absent.
503  ///
504  /// \param LangOpts The set of language options that will be used to
505  /// evaluate the availability of this feature.
506  ///
507  /// \param Target The target options that will be used to evaluate the
508  /// availability of this feature.
509  void addRequirement(StringRef Feature, bool RequiredState,
510  const LangOptions &LangOpts,
511  const TargetInfo &Target);
512 
513  /// \brief Mark this module and all of its submodules as unavailable.
514  void markUnavailable(bool MissingRequirement = false);
515 
516  /// \brief Find the submodule with the given name.
517  ///
518  /// \returns The submodule if found, or NULL otherwise.
519  Module *findSubmodule(StringRef Name) const;
520 
521  /// \brief Determine whether the specified module would be visible to
522  /// a lookup at the end of this module.
523  ///
524  /// FIXME: This may return incorrect results for (submodules of) the
525  /// module currently being built, if it's queried before we see all
526  /// of its imports.
527  bool isModuleVisible(const Module *M) const {
528  if (VisibleModulesCache.empty())
529  buildVisibleModulesCache();
530  return VisibleModulesCache.count(M);
531  }
532 
533  unsigned getVisibilityID() const { return VisibilityID; }
534 
535  using submodule_iterator = std::vector<Module *>::iterator;
536  using submodule_const_iterator = std::vector<Module *>::const_iterator;
537 
538  submodule_iterator submodule_begin() { return SubModules.begin(); }
539  submodule_const_iterator submodule_begin() const {return SubModules.begin();}
540  submodule_iterator submodule_end() { return SubModules.end(); }
541  submodule_const_iterator submodule_end() const { return SubModules.end(); }
542 
543  llvm::iterator_range<submodule_iterator> submodules() {
544  return llvm::make_range(submodule_begin(), submodule_end());
545  }
546  llvm::iterator_range<submodule_const_iterator> submodules() const {
547  return llvm::make_range(submodule_begin(), submodule_end());
548  }
549 
550  /// \brief Appends this module's list of exported modules to \p Exported.
551  ///
552  /// This provides a subset of immediately imported modules (the ones that are
553  /// directly exported), not the complete set of exported modules.
554  void getExportedModules(SmallVectorImpl<Module *> &Exported) const;
555 
556  static StringRef getModuleInputBufferName() {
557  return "<module-includes>";
558  }
559 
560  /// \brief Print the module map for this module to the given stream.
561  void print(raw_ostream &OS, unsigned Indent = 0) const;
562 
563  /// \brief Dump the contents of this module to the given output stream.
564  void dump() const;
565 
566 private:
567  void buildVisibleModulesCache() const;
568 };
569 
570 /// \brief A set of visible modules.
572 public:
573  VisibleModuleSet() = default;
575  : ImportLocs(std::move(O.ImportLocs)), Generation(O.Generation ? 1 : 0) {
576  O.ImportLocs.clear();
577  ++O.Generation;
578  }
579 
580  /// Move from another visible modules set. Guaranteed to leave the source
581  /// empty and bump the generation on both.
583  ImportLocs = std::move(O.ImportLocs);
584  O.ImportLocs.clear();
585  ++O.Generation;
586  ++Generation;
587  return *this;
588  }
589 
590  /// \brief Get the current visibility generation. Incremented each time the
591  /// set of visible modules changes in any way.
592  unsigned getGeneration() const { return Generation; }
593 
594  /// \brief Determine whether a module is visible.
595  bool isVisible(const Module *M) const {
596  return getImportLoc(M).isValid();
597  }
598 
599  /// \brief Get the location at which the import of a module was triggered.
601  return M->getVisibilityID() < ImportLocs.size()
602  ? ImportLocs[M->getVisibilityID()]
603  : SourceLocation();
604  }
605 
606  /// \brief A callback to call when a module is made visible (directly or
607  /// indirectly) by a call to \ref setVisible.
608  using VisibleCallback = llvm::function_ref<void(Module *M)>;
609 
610  /// \brief A callback to call when a module conflict is found. \p Path
611  /// consists of a sequence of modules from the conflicting module to the one
612  /// made visible, where each was exported by the next.
613  using ConflictCallback =
614  llvm::function_ref<void(ArrayRef<Module *> Path, Module *Conflict,
615  StringRef Message)>;
616 
617  /// \brief Make a specific module visible.
618  void setVisible(Module *M, SourceLocation Loc,
619  VisibleCallback Vis = [](Module *) {},
621  StringRef) {});
622 
623 private:
624  /// Import locations for each visible module. Indexed by the module's
625  /// VisibilityID.
626  std::vector<SourceLocation> ImportLocs;
627 
628  /// Visibility generation, bumped every time the visibility state changes.
629  unsigned Generation = 0;
630 };
631 
632 } // namespace clang
633 
634 #endif // LLVM_CLANG_BASIC_MODULE_H
SourceLocation ExportLoc
The location of the &#39;export&#39; keyword in the module map file.
Definition: Module.h:290
unsigned IsAvailable
Whether this module is available in the current translation unit.
Definition: Module.h:210
SmallVector< UnresolvedExportDecl, 2 > UnresolvedExports
The set of export declarations that have yet to be resolved.
Definition: Module.h:302
ASTFileSignature Signature
The module signature.
Definition: Module.h:106
std::string Name
The name of this module.
Definition: Module.h:68
A set of visible modules.
Definition: Module.h:571
ASTFileSignature(std::array< uint32_t, 5 > S={{0}})
Definition: Module.h:56
SmallVector< UnresolvedHeaderDirective, 1 > MissingHeaders
Headers that are mentioned in the module map file but could not be found on the file system...
Definition: Module.h:188
std::string Message
The message provided to the user when there is a conflict.
Definition: Module.h:341
bool isSubFramework() const
Determine whether this module is a subframework of another framework.
Definition: Module.h:406
std::vector< Module * >::iterator submodule_iterator
Definition: Module.h:535
Implements support for file system lookup, file system caching, and directory search management...
Definition: FileManager.h:116
Defines the clang::FileManager interface and associated types.
An unresolved conflict with another module.
Definition: Module.h:336
unsigned getVisibilityID() const
Definition: Module.h:533
DominatorTree GraphTraits specialization so the DominatorTree can be iterable by generic graph iterat...
Definition: Dominators.h:26
submodule_iterator submodule_begin()
Definition: Module.h:538
unsigned IsExternC
Whether this is an &#39;extern "C"&#39; module (which implicitly puts all headers in it within an &#39;extern "C"...
Definition: Module.h:228
void addTopHeaderFilename(StringRef Filename)
Add a top-level header filename associated with this module.
Definition: Module.h:484
Module * getTopLevelModule()
Retrieve the top-level module for this (sub)module, which may be this module.
Definition: Module.h:433
std::vector< UnresolvedConflict > UnresolvedConflicts
The list of conflicts for which the module-id has not yet been resolved.
Definition: Module.h:346
unsigned IsFramework
Whether this is a framework module.
Definition: Module.h:216
SourceLocation getImportLoc(const Module *M) const
Get the location at which the import of a module was triggered.
Definition: Module.h:600
const FileEntry * getASTFile() const
The serialized AST file for this module, if one was created.
Definition: Module.h:448
bool hasUmbrellaDir() const
Determine whether this module has an umbrella directory that is not based on an umbrella header...
Definition: Module.h:473
This is a module that was defined by a module map and built out of header files.
Definition: Module.h:76
std::string PresumedModuleMapFile
The presumed file name for the module map defining this module.
Definition: Module.h:100
bool isPartOfFramework() const
Determine whether this module is a part of a framework, either because it is a framework module or be...
Definition: Module.h:396
A library or framework to link against when an entity from this module is used.
Definition: Module.h:312
static StringRef getModuleInputBufferName()
Definition: Module.h:556
SmallVector< Requirement, 2 > Requirements
The set of language features required to use this module.
Definition: Module.h:198
Definition: Format.h:1900
Header getUmbrellaHeader() const
Retrieve the header that serves as the umbrella header for this module.
Definition: Module.h:465
bool isVisible(const Module *M) const
Determine whether a module is visible.
Definition: Module.h:595
The signature of a module, which is a hash of the AST content.
Definition: Module.h:55
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:48
Describes a module or submodule.
Definition: Module.h:65
StringRef getTopLevelModuleName() const
Retrieve the name of the top-level module.
Definition: Module.h:443
unsigned InferExportWildcard
Whether, when inferring submodules, the inferr submodules should export all modules they import (e...
Definition: Module.h:245
static void dump(llvm::raw_ostream &OS, StringRef FunctionName, ArrayRef< CounterExpression > Expressions, ArrayRef< CounterMappingRegion > Regions)
std::string Message
The message provided to the user when there is a conflict.
Definition: Module.h:354
ModuleId Id
The (unresolved) module id.
Definition: Module.h:338
Module * Parent
The parent of this module.
Definition: Module.h:91
unsigned IsInferred
Whether this is an inferred submodule (module * { ... }).
Definition: Module.h:231
unsigned IsFromModuleFile
Whether this module was loaded from a module file.
Definition: Module.h:213
submodule_iterator submodule_end()
Definition: Module.h:540
LinkLibrary(const std::string &Library, bool IsFramework)
Definition: Module.h:314
VisibleModuleSet(VisibleModuleSet &&O)
Definition: Module.h:574
unsigned NoUndeclaredIncludes
Whether files in this module can only include non-modular headers and headers from used modules...
Definition: Module.h:256
unsigned IsSystem
Whether this is a "system" module (which assumes that all headers in it are system headers)...
Definition: Module.h:223
void setParent(Module *M)
Set the parent of this module.
Definition: Module.h:412
llvm::SmallSetVector< Module *, 2 > Imports
The set of modules imported by this module, and on which this module depends.
Definition: Module.h:275
StringRef Filename
Definition: Format.cpp:1345
std::string Library
The library to link against.
Definition: Module.h:321
const DirectoryEntry * Entry
Definition: Module.h:162
SmallVector< std::pair< std::string, SourceLocation >, 2 > ModuleId
Describes the name of a module.
Definition: Module.h:52
Exposes information about the current target.
Definition: TargetInfo.h:54
SmallVector< ModuleId, 2 > UnresolvedDirectUses
The set of use declarations that have yet to be resolved.
Definition: Module.h:308
ModuleId Id
The name of the module.
Definition: Module.h:293
VisibleModuleSet & operator=(VisibleModuleSet &&O)
Move from another visible modules set.
Definition: Module.h:582
unsigned ConfigMacrosExhaustive
Whether the set of configuration macros is exhaustive.
Definition: Module.h:252
#define bool
Definition: stdbool.h:31
llvm::SmallVector< LinkLibrary, 2 > LinkLibraries
The set of libraries or frameworks to link against when an entity from this module is used...
Definition: Module.h:329
std::string NameAsWritten
Definition: Module.h:152
bool isAvailable() const
Determine whether this module is available for use within the current translation unit...
Definition: Module.h:368
Information about a header directive as found in the module map file.
Definition: Module.h:151
SmallVector< ExportDecl, 2 > Exports
The set of export declarations.
Definition: Module.h:284
llvm::function_ref< void(ArrayRef< Module * > Path, Module *Conflict, StringRef Message)> ConflictCallback
A callback to call when a module conflict is found.
Definition: Module.h:615
Kind
void setASTFile(const FileEntry *File)
Set the serialized AST file for the top-level module of this module.
Definition: Module.h:453
Encodes a location in the source.
std::string ExportAsModule
The module through which entities defined in this module will eventually be exposed, for use in "private" modules.
Definition: Module.h:113
NameVisibilityKind NameVisibility
The visibility of names within this particular module.
Definition: Module.h:268
All of the names in this module are hidden.
Definition: Module.h:262
Information about a directory name as found in the module map file.
Definition: Module.h:160
Cached information about one file (either on disk or in the virtual file system). ...
Definition: FileManager.h:59
const FileEntry * Entry
Definition: Module.h:153
bool isModuleVisible(const Module *M) const
Determine whether the specified module would be visible to a lookup at the end of this module...
Definition: Module.h:527
This is a fragment of the global module within some C++ Modules TS module.
Definition: Module.h:83
bool Wildcard
Whether this export declaration ends in a wildcard, indicating that all of its submodules should be e...
Definition: Module.h:298
std::pair< std::string, bool > Requirement
An individual requirement: a feature name and a flag indicating the required state of that feature...
Definition: Module.h:192
llvm::iterator_range< submodule_const_iterator > submodules() const
Definition: Module.h:546
bool isSubModule() const
Determine whether this module is a submodule.
Definition: Module.h:387
A conflict between two modules.
Definition: Module.h:349
SmallVector< UnresolvedHeaderDirective, 1 > UnresolvedHeaders
Headers that are mentioned in the module map file but that we have not yet attempted to resolve to a ...
Definition: Module.h:184
Dataflow Directional Tag Classes.
unsigned IsMissingRequirement
Whether this module is missing a feature from Requirements.
Definition: Module.h:201
Stored information about a header directive that was found in the module map file but has not been re...
Definition: Module.h:172
llvm::PointerUnion< const DirectoryEntry *, const FileEntry * > Umbrella
The umbrella header or directory.
Definition: Module.h:103
SourceLocation InferredSubmoduleLoc
The location of the inferred submodule.
Definition: Module.h:271
llvm::iterator_range< submodule_iterator > submodules()
Definition: Module.h:543
llvm::PointerIntPair< Module *, 1, bool > ExportDecl
Describes an exported module.
Definition: Module.h:281
void addTopHeader(const FileEntry *File)
Add a top-level header associated with this module.
Definition: Module.h:478
SourceLocation DefinitionLoc
The location of the module definition.
Definition: Module.h:71
std::vector< Conflict > Conflicts
The list of conflicts.
Definition: Module.h:358
SmallVector< Module *, 2 > DirectUses
The directly used modules.
Definition: Module.h:305
Describes an exported module that has not yet been resolved (perhaps because the module it refers to ...
Definition: Module.h:288
unsigned getGeneration() const
Get the current visibility generation.
Definition: Module.h:592
std::string NameAsWritten
Definition: Module.h:161
Cached information about one directory (either on disk or in the virtual file system).
Definition: FileManager.h:45
submodule_const_iterator submodule_begin() const
Definition: Module.h:539
llvm::function_ref< void(Module *M)> VisibleCallback
A callback to call when a module is made visible (directly or indirectly) by a call to setVisible...
Definition: Module.h:608
Defines the clang::SourceLocation class and associated facilities.
unsigned InferSubmodules
Whether we should infer submodules for this module based on the headers.
Definition: Module.h:237
unsigned HasIncompatibleModuleFile
Whether we tried and failed to load a module file for this module.
Definition: Module.h:204
NameVisibilityKind
Describes the visibility of the various names within a particular module.
Definition: Module.h:260
std::vector< std::string > ConfigMacros
The set of "configuration macros", which are macros that (intentionally) change how this module is bu...
Definition: Module.h:333
submodule_const_iterator submodule_end() const
Definition: Module.h:541
std::string UmbrellaAsWritten
The name of the umbrella entry, as written in the module map.
Definition: Module.h:109
Module * Other
The module that this module conflicts with.
Definition: Module.h:351
unsigned IsExplicit
Whether this is an explicit submodule.
Definition: Module.h:219
std::vector< Module * >::const_iterator submodule_const_iterator
Definition: Module.h:536
unsigned InferExplicitSubmodules
Whether, when inferring submodules, the inferred submodules should be explicit.
Definition: Module.h:241
This is a C++ Modules TS module interface unit.
Definition: Module.h:79