FrontendAction.cpp source code [clang_source_code/lib/Frontend/FrontendAction.cpp]

1	//===--- FrontendAction.cpp -----------------------------------------------===//
2	//
3	// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4	// See https://llvm.org/LICENSE.txt for license information.
5	// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6	//
7	//===----------------------------------------------------------------------===//
8
9	#include "clang/Frontend/FrontendAction.h"
10	#include "clang/AST/ASTConsumer.h"
11	#include "clang/AST/ASTContext.h"
12	#include "clang/AST/DeclGroup.h"
13	#include "clang/Frontend/ASTUnit.h"
14	#include "clang/Frontend/CompilerInstance.h"
15	#include "clang/Frontend/FrontendDiagnostic.h"
16	#include "clang/Frontend/FrontendPluginRegistry.h"
17	#include "clang/Frontend/LayoutOverrideSource.h"
18	#include "clang/Frontend/MultiplexConsumer.h"
19	#include "clang/Frontend/Utils.h"
20	#include "clang/Lex/HeaderSearch.h"
21	#include "clang/Lex/LiteralSupport.h"
22	#include "clang/Lex/Preprocessor.h"
23	#include "clang/Lex/PreprocessorOptions.h"
24	#include "clang/Parse/ParseAST.h"
25	#include "clang/Serialization/ASTDeserializationListener.h"
26	#include "clang/Serialization/ASTReader.h"
27	#include "clang/Serialization/GlobalModuleIndex.h"
28	#include "llvm/Support/BuryPointer.h"
29	#include "llvm/Support/ErrorHandling.h"
30	#include "llvm/Support/FileSystem.h"
31	#include "llvm/Support/Path.h"
32	#include "llvm/Support/Timer.h"
33	#include "llvm/Support/raw_ostream.h"
34	#include <system_error>
35	using namespace clang;
36
37	LLVM_INSTANTIATE_REGISTRY(FrontendPluginRegistry)
38
39	namespace {
40
41	class DelegatingDeserializationListener : public ASTDeserializationListener {
42	ASTDeserializationListener *Previous;
43	bool DeletePrevious;
44
45	public:
46	explicit DelegatingDeserializationListener(
47	ASTDeserializationListener *Previous, bool DeletePrevious)
48	: Previous(Previous), DeletePrevious(DeletePrevious) {}
49	~DelegatingDeserializationListener() override {
50	if (DeletePrevious)
51	delete Previous;
52	}
53
54	void ReaderInitialized(ASTReader *Reader) override {
55	if (Previous)
56	Previous->ReaderInitialized(Reader);
57	}
58	void IdentifierRead(serialization::IdentID ID,
59	IdentifierInfo *II) override {
60	if (Previous)
61	Previous->IdentifierRead(ID, II);
62	}
63	void TypeRead(serialization::TypeIdx Idx, QualType T) override {
64	if (Previous)
65	Previous->TypeRead(Idx, T);
66	}
67	void DeclRead(serialization::DeclID ID, const Decl *D) override {
68	if (Previous)
69	Previous->DeclRead(ID, D);
70	}
71	void SelectorRead(serialization::SelectorID ID, Selector Sel) override {
72	if (Previous)
73	Previous->SelectorRead(ID, Sel);
74	}
75	void MacroDefinitionRead(serialization::PreprocessedEntityID PPID,
76	MacroDefinitionRecord *MD) override {
77	if (Previous)
78	Previous->MacroDefinitionRead(PPID, MD);
79	}
80	};
81
82	/// Dumps deserialized declarations.
83	class DeserializedDeclsDumper : public DelegatingDeserializationListener {
84	public:
85	explicit DeserializedDeclsDumper(ASTDeserializationListener *Previous,
86	bool DeletePrevious)
87	: DelegatingDeserializationListener(Previous, DeletePrevious) {}
88
89	void DeclRead(serialization::DeclID ID, const Decl *D) override {
90	llvm::outs() << "PCH DECL: " << D->getDeclKindName();
91	if (const NamedDecl *ND = dyn_cast<NamedDecl>(D)) {
92	llvm::outs() << " - ";
93	ND->printQualifiedName(llvm::outs());
94	}
95	llvm::outs() << "\n";
96
97	DelegatingDeserializationListener::DeclRead(ID, D);
98	}
99	};
100
101	/// Checks deserialized declarations and emits error if a name
102	/// matches one given in command-line using -error-on-deserialized-decl.
103	class DeserializedDeclsChecker : public DelegatingDeserializationListener {
104	ASTContext &Ctx;
105	std::set<std::string> NamesToCheck;
106
107	public:
108	DeserializedDeclsChecker(ASTContext &Ctx,
109	const std::set<std::string> &NamesToCheck,
110	ASTDeserializationListener *Previous,
111	bool DeletePrevious)
112	: DelegatingDeserializationListener(Previous, DeletePrevious), Ctx(Ctx),
113	NamesToCheck(NamesToCheck) {}
114
115	void DeclRead(serialization::DeclID ID, const Decl *D) override {
116	if (const NamedDecl *ND = dyn_cast<NamedDecl>(D))
117	if (NamesToCheck.find(ND->getNameAsString()) != NamesToCheck.end()) {
118	unsigned DiagID
119	= Ctx.getDiagnostics().getCustomDiagID(DiagnosticsEngine::Error,
120	"%0 was deserialized");
121	Ctx.getDiagnostics().Report(Ctx.getFullLoc(D->getLocation()), DiagID)
122	<< ND->getNameAsString();
123	}
124
125	DelegatingDeserializationListener::DeclRead(ID, D);
126	}
127	};
128
129	} // end anonymous namespace
130
131	FrontendAction::FrontendAction() : Instance(nullptr) {}
132
133	FrontendAction::~FrontendAction() {}
134
135	void FrontendAction::setCurrentInput(const FrontendInputFile &CurrentInput,
136	std::unique_ptr<ASTUnit> AST) {
137	this->CurrentInput = CurrentInput;
138	CurrentASTUnit = std::move(AST);
139	}
140
141	Module *FrontendAction::getCurrentModule() const {
142	CompilerInstance &CI = getCompilerInstance();
143	return CI.getPreprocessor().getHeaderSearchInfo().lookupModule(
144	CI.getLangOpts().CurrentModule, /AllowSearch/false);
145	}
146
147	std::unique_ptr<ASTConsumer>
148	FrontendAction::CreateWrappedASTConsumer(CompilerInstance &CI,
149	StringRef InFile) {
150	std::unique_ptr<ASTConsumer> Consumer = CreateASTConsumer(CI, InFile);
151	if (!Consumer)
152	return nullptr;
153
154	// Validate -add-plugin args.
155	bool FoundAllPlugins = true;
156	for (const std::string &Arg : CI.getFrontendOpts().AddPluginActions) {
157	bool Found = false;
158	for (FrontendPluginRegistry::iterator it = FrontendPluginRegistry::begin(),
159	ie = FrontendPluginRegistry::end();
160	it != ie; ++it) {
161	if (it->getName() == Arg)
162	Found = true;
163	}
164	if (!Found) {
165	CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) << Arg;
166	FoundAllPlugins = false;
167	}
168	}
169	if (!FoundAllPlugins)
170	return nullptr;
171
172	// If there are no registered plugins we don't need to wrap the consumer
173	if (FrontendPluginRegistry::begin() == FrontendPluginRegistry::end())
174	return Consumer;
175
176	// If this is a code completion run, avoid invoking the plugin consumers
177	if (CI.hasCodeCompletionConsumer())
178	return Consumer;
179
180	// Collect the list of plugins that go before the main action (in Consumers)
181	// or after it (in AfterConsumers)
182	std::vector<std::unique_ptr<ASTConsumer>> Consumers;
183	std::vector<std::unique_ptr<ASTConsumer>> AfterConsumers;
184	for (FrontendPluginRegistry::iterator it = FrontendPluginRegistry::begin(),
185	ie = FrontendPluginRegistry::end();
186	it != ie; ++it) {
187	std::unique_ptr<PluginASTAction> P = it->instantiate();
188	PluginASTAction::ActionType ActionType = P->getActionType();
189	if (ActionType == PluginASTAction::Cmdline) {
190	// This is O(\|plugins\| * \|add_plugins\|), but since both numbers are
191	// way below 50 in practice, that's ok.
192	for (size_t i = 0, e = CI.getFrontendOpts().AddPluginActions.size();
193	i != e; ++i) {
194	if (it->getName() == CI.getFrontendOpts().AddPluginActions[i]) {
195	ActionType = PluginASTAction::AddAfterMainAction;
196	break;
197	}
198	}
199	}
200	if ((ActionType == PluginASTAction::AddBeforeMainAction \|\|
201	ActionType == PluginASTAction::AddAfterMainAction) &&
202	P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs[it->getName()])) {
203	std::unique_ptr<ASTConsumer> PluginConsumer = P->CreateASTConsumer(CI, InFile);
204	if (ActionType == PluginASTAction::AddBeforeMainAction) {
205	Consumers.push_back(std::move(PluginConsumer));
206	} else {
207	AfterConsumers.push_back(std::move(PluginConsumer));
208	}
209	}
210	}
211
212	// Add to Consumers the main consumer, then all the plugins that go after it
213	Consumers.push_back(std::move(Consumer));
214	for (auto &C : AfterConsumers) {
215	Consumers.push_back(std::move(C));
216	}
217
218	return llvm::make_unique<MultiplexConsumer>(std::move(Consumers));
219	}
220
221	/// For preprocessed files, if the first line is the linemarker and specifies
222	/// the original source file name, use that name as the input file name.
223	/// Returns the location of the first token after the line marker directive.
224	///
225	/// \param CI The compiler instance.
226	/// \param InputFile Populated with the filename from the line marker.
227	/// \param IsModuleMap If \c true, add a line note corresponding to this line
228	/// directive. (We need to do this because the directive will not be
229	/// visited by the preprocessor.)
230	static SourceLocation ReadOriginalFileName(CompilerInstance &CI,
231	std::string &InputFile,
232	bool IsModuleMap = false) {
233	auto &SourceMgr = CI.getSourceManager();
234	auto MainFileID = SourceMgr.getMainFileID();
235
236	bool Invalid = false;
237	const auto *MainFileBuf = SourceMgr.getBuffer(MainFileID, &Invalid);
238	if (Invalid)
239	return SourceLocation();
240
241	std::unique_ptr<Lexer> RawLexer(
242	new Lexer(MainFileID, MainFileBuf, SourceMgr, CI.getLangOpts()));
243
244	// If the first line has the syntax of
245	//
246	// # NUM "FILENAME"
247	//
248	// we use FILENAME as the input file name.
249	Token T;
250	if (RawLexer->LexFromRawLexer(T) \|\| T.getKind() != tok::hash)
251	return SourceLocation();
252	if (RawLexer->LexFromRawLexer(T) \|\| T.isAtStartOfLine() \|\|
253	T.getKind() != tok::numeric_constant)
254	return SourceLocation();
255
256	unsigned LineNo;
257	SourceLocation LineNoLoc = T.getLocation();
258	if (IsModuleMap) {
259	llvm::SmallString<16> Buffer;
260	if (Lexer::getSpelling(LineNoLoc, Buffer, SourceMgr, CI.getLangOpts())
261	.getAsInteger(10, LineNo))
262	return SourceLocation();
263	}
264
265	RawLexer->LexFromRawLexer(T);
266	if (T.isAtStartOfLine() \|\| T.getKind() != tok::string_literal)
267	return SourceLocation();
268
269	StringLiteralParser Literal(T, CI.getPreprocessor());
270	if (Literal.hadError)
271	return SourceLocation();
272	RawLexer->LexFromRawLexer(T);
273	if (T.isNot(tok::eof) && !T.isAtStartOfLine())
274	return SourceLocation();
275	InputFile = Literal.GetString().str();
276
277	if (IsModuleMap)
278	CI.getSourceManager().AddLineNote(
279	LineNoLoc, LineNo, SourceMgr.getLineTableFilenameID(InputFile), false,
280	false, SrcMgr::C_User_ModuleMap);
281
282	return T.getLocation();
283	}
284
285	static SmallVectorImpl<char> &
286	operator+=(SmallVectorImpl<char> &Includes, StringRef RHS) {
287	Includes.append(RHS.begin(), RHS.end());
288	return Includes;
289	}
290
291	static void addHeaderInclude(StringRef HeaderName,
292	SmallVectorImpl<char> &Includes,
293	const LangOptions &LangOpts,
294	bool IsExternC) {
295	if (IsExternC && LangOpts.CPlusPlus)
296	Includes += "extern \"C\" {\n";
297	if (LangOpts.ObjC)
298	Includes += "#import \"";
299	else
300	Includes += "#include \"";
301
302	Includes += HeaderName;
303
304	Includes += "\"\n";
305	if (IsExternC && LangOpts.CPlusPlus)
306	Includes += "}\n";
307	}
308
309	/// Collect the set of header includes needed to construct the given
310	/// module and update the TopHeaders file set of the module.
311	///
312	/// \param Module The module we're collecting includes from.
313	///
314	/// \param Includes Will be augmented with the set of \#includes or \#imports
315	/// needed to load all of the named headers.
316	static std::error_code collectModuleHeaderIncludes(
317	const LangOptions &LangOpts, FileManager &FileMgr, DiagnosticsEngine &Diag,
318	ModuleMap &ModMap, clang::Module *Module, SmallVectorImpl<char> &Includes) {
319	// Don't collect any headers for unavailable modules.
320	if (!Module->isAvailable())
321	return std::error_code();
322
323	// Resolve all lazy header directives to header files.
324	ModMap.resolveHeaderDirectives(Module);
325
326	// If any headers are missing, we can't build this module. In most cases,
327	// diagnostics for this should have already been produced; we only get here
328	// if explicit stat information was provided.
329	// FIXME: If the name resolves to a file with different stat information,
330	// produce a better diagnostic.
331	if (!Module->MissingHeaders.empty()) {
332	auto &MissingHeader = Module->MissingHeaders.front();
333	Diag.Report(MissingHeader.FileNameLoc, diag::err_module_header_missing)
334	<< MissingHeader.IsUmbrella << MissingHeader.FileName;
335	return std::error_code();
336	}
337
338	// Add includes for each of these headers.
339	for (auto HK : {Module::HK_Normal, Module::HK_Private}) {
340	for (Module::Header &H : Module->Headers[HK]) {
341	Module->addTopHeader(H.Entry);
342	// Use the path as specified in the module map file. We'll look for this
343	// file relative to the module build directory (the directory containing
344	// the module map file) so this will find the same file that we found
345	// while parsing the module map.
346	addHeaderInclude(H.NameAsWritten, Includes, LangOpts, Module->IsExternC);
347	}
348	}
349	// Note that Module->PrivateHeaders will not be a TopHeader.
350
351	if (Module::Header UmbrellaHeader = Module->getUmbrellaHeader()) {
352	Module->addTopHeader(UmbrellaHeader.Entry);
353	if (Module->Parent)
354	// Include the umbrella header for submodules.
355	addHeaderInclude(UmbrellaHeader.NameAsWritten, Includes, LangOpts,
356	Module->IsExternC);
357	} else if (Module::DirectoryName UmbrellaDir = Module->getUmbrellaDir()) {
358	// Add all of the headers we find in this subdirectory.
359	std::error_code EC;
360	SmallString<128> DirNative;
361	llvm::sys::path::native(UmbrellaDir.Entry->getName(), DirNative);
362
363	llvm::vfs::FileSystem &FS = FileMgr.getVirtualFileSystem();
364	for (llvm::vfs::recursive_directory_iterator Dir(FS, DirNative, EC), End;
365	Dir != End && !EC; Dir.increment(EC)) {
366	// Check whether this entry has an extension typically associated with
367	// headers.
368	if (!llvm::StringSwitch<bool>(llvm::sys::path::extension(Dir->path()))
369	.Cases(".h", ".H", ".hh", ".hpp", true)
370	.Default(false))
371	continue;
372
373	const FileEntry *Header = FileMgr.getFile(Dir->path());
374	// FIXME: This shouldn't happen unless there is a file system race. Is
375	// that worth diagnosing?
376	if (!Header)
377	continue;
378
379	// If this header is marked 'unavailable' in this module, don't include
380	// it.
381	if (ModMap.isHeaderUnavailableInModule(Header, Module))
382	continue;
383
384	// Compute the relative path from the directory to this file.
385	SmallVector<StringRef, 16> Components;
386	auto PathIt = llvm::sys::path::rbegin(Dir->path());
387	for (int I = 0; I != Dir.level() + 1; ++I, ++PathIt)
388	Components.push_back(*PathIt);
389	SmallString<128> RelativeHeader(UmbrellaDir.NameAsWritten);
390	for (auto It = Components.rbegin(), End = Components.rend(); It != End;
391	++It)
392	llvm::sys::path::append(RelativeHeader, *It);
393
394	// Include this header as part of the umbrella directory.
395	Module->addTopHeader(Header);
396	addHeaderInclude(RelativeHeader, Includes, LangOpts, Module->IsExternC);
397	}
398
399	if (EC)
400	return EC;
401	}
402
403	// Recurse into submodules.
404	for (clang::Module::submodule_iterator Sub = Module->submodule_begin(),
405	SubEnd = Module->submodule_end();
406	Sub != SubEnd; ++Sub)
407	if (std::error_code Err = collectModuleHeaderIncludes(
408	LangOpts, FileMgr, Diag, ModMap, *Sub, Includes))
409	return Err;
410
411	return std::error_code();
412	}
413
414	static bool loadModuleMapForModuleBuild(CompilerInstance &CI, bool IsSystem,
415	bool IsPreprocessed,
416	std::string &PresumedModuleMapFile,
417	unsigned &Offset) {
418	auto &SrcMgr = CI.getSourceManager();
419	HeaderSearch &HS = CI.getPreprocessor().getHeaderSearchInfo();
420
421	// Map the current input to a file.
422	FileID ModuleMapID = SrcMgr.getMainFileID();
423	const FileEntry *ModuleMap = SrcMgr.getFileEntryForID(ModuleMapID);
424
425	// If the module map is preprocessed, handle the initial line marker;
426	// line directives are not part of the module map syntax in general.
427	Offset = 0;
428	if (IsPreprocessed) {
429	SourceLocation EndOfLineMarker =
430	ReadOriginalFileName(CI, PresumedModuleMapFile, /IsModuleMap/ true);
431	if (EndOfLineMarker.isValid())
432	Offset = CI.getSourceManager().getDecomposedLoc(EndOfLineMarker).second;
433	}
434
435	// Load the module map file.
436	if (HS.loadModuleMapFile(ModuleMap, IsSystem, ModuleMapID, &Offset,
437	PresumedModuleMapFile))
438	return true;
439
440	if (SrcMgr.getBuffer(ModuleMapID)->getBufferSize() == Offset)
441	Offset = 0;
442
443	return false;
444	}
445
446	static Module *prepareToBuildModule(CompilerInstance &CI,
447	StringRef ModuleMapFilename) {
448	if (CI.getLangOpts().CurrentModule.empty()) {
449	CI.getDiagnostics().Report(diag::err_missing_module_name);
450
451	// FIXME: Eventually, we could consider asking whether there was just
452	// a single module described in the module map, and use that as a
453	// default. Then it would be fairly trivial to just "compile" a module
454	// map with a single module (the common case).
455	return nullptr;
456	}
457
458	// Dig out the module definition.
459	HeaderSearch &HS = CI.getPreprocessor().getHeaderSearchInfo();
460	Module *M = HS.lookupModule(CI.getLangOpts().CurrentModule,
461	/AllowSearch=/false);
462	if (!M) {
463	CI.getDiagnostics().Report(diag::err_missing_module)
464	<< CI.getLangOpts().CurrentModule << ModuleMapFilename;
465
466	return nullptr;
467	}
468
469	// Check whether we can build this module at all.
470	if (Preprocessor::checkModuleIsAvailable(CI.getLangOpts(), CI.getTarget(),
471	CI.getDiagnostics(), M))
472	return nullptr;
473
474	// Inform the preprocessor that includes from within the input buffer should
475	// be resolved relative to the build directory of the module map file.
476	CI.getPreprocessor().setMainFileDir(M->Directory);
477
478	// If the module was inferred from a different module map (via an expanded
479	// umbrella module definition), track that fact.
480	// FIXME: It would be preferable to fill this in as part of processing
481	// the module map, rather than adding it after the fact.
482	StringRef OriginalModuleMapName = CI.getFrontendOpts().OriginalModuleMap;
483	if (!OriginalModuleMapName.empty()) {
484	auto *OriginalModuleMap =
485	CI.getFileManager().getFile(OriginalModuleMapName,
486	/openFile/ true);
487	if (!OriginalModuleMap) {
488	CI.getDiagnostics().Report(diag::err_module_map_not_found)
489	<< OriginalModuleMapName;
490	return nullptr;
491	}
492	if (OriginalModuleMap != CI.getSourceManager().getFileEntryForID(
493	CI.getSourceManager().getMainFileID())) {
494	M->IsInferred = true;
495	CI.getPreprocessor().getHeaderSearchInfo().getModuleMap()
496	.setInferredModuleAllowedBy(M, OriginalModuleMap);
497	}
498	}
499
500	// If we're being run from the command-line, the module build stack will not
501	// have been filled in yet, so complete it now in order to allow us to detect
502	// module cycles.
503	SourceManager &SourceMgr = CI.getSourceManager();
504	if (SourceMgr.getModuleBuildStack().empty())
505	SourceMgr.pushModuleBuildStack(CI.getLangOpts().CurrentModule,
506	FullSourceLoc(SourceLocation(), SourceMgr));
507	return M;
508	}
509
510	/// Compute the input buffer that should be used to build the specified module.
511	static std::unique_ptr<llvm::MemoryBuffer>
512	getInputBufferForModule(CompilerInstance &CI, Module *M) {
513	FileManager &FileMgr = CI.getFileManager();
514
515	// Collect the set of #includes we need to build the module.
516	SmallString<256> HeaderContents;
517	std::error_code Err = std::error_code();
518	if (Module::Header UmbrellaHeader = M->getUmbrellaHeader())
519	addHeaderInclude(UmbrellaHeader.NameAsWritten, HeaderContents,
520	CI.getLangOpts(), M->IsExternC);
521	Err = collectModuleHeaderIncludes(
522	CI.getLangOpts(), FileMgr, CI.getDiagnostics(),
523	CI.getPreprocessor().getHeaderSearchInfo().getModuleMap(), M,
524	HeaderContents);
525
526	if (Err) {
527	CI.getDiagnostics().Report(diag::err_module_cannot_create_includes)
528	<< M->getFullModuleName() << Err.message();
529	return nullptr;
530	}
531
532	return llvm::MemoryBuffer::getMemBufferCopy(
533	HeaderContents, Module::getModuleInputBufferName());
534	}
535
536	bool FrontendAction::BeginSourceFile(CompilerInstance &CI,
537	const FrontendInputFile &RealInput) {
538	FrontendInputFile Input(RealInput);
539	(0) . __assert_fail ("!Instance && \"Already processing a source file!\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 539, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!Instance && "Already processing a source file!");
540	(0) . __assert_fail ("!Input.isEmpty() && \"Unexpected empty filename!\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 540, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!Input.isEmpty() && "Unexpected empty filename!");
541	setCurrentInput(Input);
542	setCompilerInstance(&CI);
543
544	bool HasBegunSourceFile = false;
545	bool ReplayASTFile = Input.getKind().getFormat() == InputKind::Precompiled &&
546	usesPreprocessorOnly();
547	if (!BeginInvocation(CI))
548	goto failure;
549
550	// If we're replaying the build of an AST file, import it and set up
551	// the initial state from its build.
552	if (ReplayASTFile) {
553	IntrusiveRefCntPtr<DiagnosticsEngine> Diags(&CI.getDiagnostics());
554
555	// The AST unit populates its own diagnostics engine rather than ours.
556	IntrusiveRefCntPtr<DiagnosticsEngine> ASTDiags(
557	new DiagnosticsEngine(Diags->getDiagnosticIDs(),
558	&Diags->getDiagnosticOptions()));
559	ASTDiags->setClient(Diags->getClient(), /OwnsClient/false);
560
561	// FIXME: What if the input is a memory buffer?
562	StringRef InputFile = Input.getFile();
563
564	std::unique_ptr<ASTUnit> AST = ASTUnit::LoadFromASTFile(
565	InputFile, CI.getPCHContainerReader(), ASTUnit::LoadPreprocessorOnly,
566	ASTDiags, CI.getFileSystemOpts(), CI.getCodeGenOpts().DebugTypeExtRefs);
567	if (!AST)
568	goto failure;
569
570	// Options relating to how we treat the input (but not what we do with it)
571	// are inherited from the AST unit.
572	CI.getHeaderSearchOpts() = AST->getHeaderSearchOpts();
573	CI.getPreprocessorOpts() = AST->getPreprocessorOpts();
574	CI.getLangOpts() = AST->getLangOpts();
575
576	// Set the shared objects, these are reset when we finish processing the
577	// file, otherwise the CompilerInstance will happily destroy them.
578	CI.setFileManager(&AST->getFileManager());
579	CI.createSourceManager(CI.getFileManager());
580	CI.getSourceManager().initializeForReplay(AST->getSourceManager());
581
582	// Preload all the module files loaded transitively by the AST unit. Also
583	// load all module map files that were parsed as part of building the AST
584	// unit.
585	if (auto ASTReader = AST->getASTReader()) {
586	auto &MM = ASTReader->getModuleManager();
587	auto &PrimaryModule = MM.getPrimaryModule();
588
589	for (serialization::ModuleFile &MF : MM)
590	if (&MF != &PrimaryModule)
591	CI.getFrontendOpts().ModuleFiles.push_back(MF.FileName);
592
593	ASTReader->visitTopLevelModuleMaps(PrimaryModule,
594	[&](const FileEntry *FE) {
595	CI.getFrontendOpts().ModuleMapFiles.push_back(FE->getName());
596	});
597	}
598
599	// Set up the input file for replay purposes.
600	auto Kind = AST->getInputKind();
601	if (Kind.getFormat() == InputKind::ModuleMap) {
602	Module *ASTModule =
603	AST->getPreprocessor().getHeaderSearchInfo().lookupModule(
604	AST->getLangOpts().CurrentModule, /AllowSearch/ false);
605	(0) . __assert_fail ("ASTModule && \"module file does not define its own module\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 605, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(ASTModule && "module file does not define its own module");
606	Input = FrontendInputFile(ASTModule->PresumedModuleMapFile, Kind);
607	} else {
608	auto &OldSM = AST->getSourceManager();
609	FileID ID = OldSM.getMainFileID();
610	if (auto *File = OldSM.getFileEntryForID(ID))
611	Input = FrontendInputFile(File->getName(), Kind);
612	else
613	Input = FrontendInputFile(OldSM.getBuffer(ID), Kind);
614	}
615	setCurrentInput(Input, std::move(AST));
616	}
617
618	// AST files follow a very different path, since they share objects via the
619	// AST unit.
620	if (Input.getKind().getFormat() == InputKind::Precompiled) {
621	(0) . __assert_fail ("!usesPreprocessorOnly() && \"this case was handled above\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 621, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!usesPreprocessorOnly() && "this case was handled above");
622	(0) . __assert_fail ("hasASTFileSupport() && \"This action does not have AST file support!\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 623, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(hasASTFileSupport() &&
623	(0) . __assert_fail ("hasASTFileSupport() && \"This action does not have AST file support!\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 623, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "This action does not have AST file support!");
624
625	IntrusiveRefCntPtr<DiagnosticsEngine> Diags(&CI.getDiagnostics());
626
627	// FIXME: What if the input is a memory buffer?
628	StringRef InputFile = Input.getFile();
629
630	std::unique_ptr<ASTUnit> AST = ASTUnit::LoadFromASTFile(
631	InputFile, CI.getPCHContainerReader(), ASTUnit::LoadEverything, Diags,
632	CI.getFileSystemOpts(), CI.getCodeGenOpts().DebugTypeExtRefs);
633
634	if (!AST)
635	goto failure;
636
637	// Inform the diagnostic client we are processing a source file.
638	CI.getDiagnosticClient().BeginSourceFile(CI.getLangOpts(), nullptr);
639	HasBegunSourceFile = true;
640
641	// Set the shared objects, these are reset when we finish processing the
642	// file, otherwise the CompilerInstance will happily destroy them.
643	CI.setFileManager(&AST->getFileManager());
644	CI.setSourceManager(&AST->getSourceManager());
645	CI.setPreprocessor(AST->getPreprocessorPtr());
646	Preprocessor &PP = CI.getPreprocessor();
647	PP.getBuiltinInfo().initializeBuiltins(PP.getIdentifierTable(),
648	PP.getLangOpts());
649	CI.setASTContext(&AST->getASTContext());
650
651	setCurrentInput(Input, std::move(AST));
652
653	// Initialize the action.
654	if (!BeginSourceFileAction(CI))
655	goto failure;
656
657	// Create the AST consumer.
658	CI.setASTConsumer(CreateWrappedASTConsumer(CI, InputFile));
659	if (!CI.hasASTConsumer())
660	goto failure;
661
662	return true;
663	}
664
665	// Set up the file and source managers, if needed.
666	if (!CI.hasFileManager()) {
667	if (!CI.createFileManager()) {
668	goto failure;
669	}
670	}
671	if (!CI.hasSourceManager())
672	CI.createSourceManager(CI.getFileManager());
673
674	// Set up embedding for any specified files. Do this before we load any
675	// source files, including the primary module map for the compilation.
676	for (const auto &F : CI.getFrontendOpts().ModulesEmbedFiles) {
677	if (const auto FE = CI.getFileManager().getFile(F, /openFile*/true))
678	CI.getSourceManager().setFileIsTransient(FE);
679	else
680	CI.getDiagnostics().Report(diag::err_modules_embed_file_not_found) << F;
681	}
682	if (CI.getFrontendOpts().ModulesEmbedAllFiles)
683	CI.getSourceManager().setAllFilesAreTransient(true);
684
685	// IR files bypass the rest of initialization.
686	if (Input.getKind().getLanguage() == InputKind::LLVM_IR) {
687	(0) . __assert_fail ("hasIRSupport() && \"This action does not have IR file support!\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 688, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(hasIRSupport() &&
688	(0) . __assert_fail ("hasIRSupport() && \"This action does not have IR file support!\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 688, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "This action does not have IR file support!");
689
690	// Inform the diagnostic client we are processing a source file.
691	CI.getDiagnosticClient().BeginSourceFile(CI.getLangOpts(), nullptr);
692	HasBegunSourceFile = true;
693
694	// Initialize the action.
695	if (!BeginSourceFileAction(CI))
696	goto failure;
697
698	// Initialize the main file entry.
699	if (!CI.InitializeSourceManager(CurrentInput))
700	goto failure;
701
702	return true;
703	}
704
705	// If the implicit PCH include is actually a directory, rather than
706	// a single file, search for a suitable PCH file in that directory.
707	if (!CI.getPreprocessorOpts().ImplicitPCHInclude.empty()) {
708	FileManager &FileMgr = CI.getFileManager();
709	PreprocessorOptions &PPOpts = CI.getPreprocessorOpts();
710	StringRef PCHInclude = PPOpts.ImplicitPCHInclude;
711	std::string SpecificModuleCachePath = CI.getSpecificModuleCachePath();
712	if (const DirectoryEntry *PCHDir = FileMgr.getDirectory(PCHInclude)) {
713	std::error_code EC;
714	SmallString<128> DirNative;
715	llvm::sys::path::native(PCHDir->getName(), DirNative);
716	bool Found = false;
717	llvm::vfs::FileSystem &FS = FileMgr.getVirtualFileSystem();
718	for (llvm::vfs::directory_iterator Dir = FS.dir_begin(DirNative, EC),
719	DirEnd;
720	Dir != DirEnd && !EC; Dir.increment(EC)) {
721	// Check whether this is an acceptable AST file.
722	if (ASTReader::isAcceptableASTFile(
723	Dir->path(), FileMgr, CI.getPCHContainerReader(),
724	CI.getLangOpts(), CI.getTargetOpts(), CI.getPreprocessorOpts(),
725	SpecificModuleCachePath)) {
726	PPOpts.ImplicitPCHInclude = Dir->path();
727	Found = true;
728	break;
729	}
730	}
731
732	if (!Found) {
733	CI.getDiagnostics().Report(diag::err_fe_no_pch_in_dir) << PCHInclude;
734	goto failure;
735	}
736	}
737	}
738
739	// Set up the preprocessor if needed. When parsing model files the
740	// preprocessor of the original source is reused.
741	if (!isModelParsingAction())
742	CI.createPreprocessor(getTranslationUnitKind());
743
744	// Inform the diagnostic client we are processing a source file.
745	CI.getDiagnosticClient().BeginSourceFile(CI.getLangOpts(),
746	&CI.getPreprocessor());
747	HasBegunSourceFile = true;
748
749	// Initialize the main file entry.
750	if (!CI.InitializeSourceManager(Input))
751	goto failure;
752
753	// For module map files, we first parse the module map and synthesize a
754	// "<module-includes>" buffer before more conventional processing.
755	if (Input.getKind().getFormat() == InputKind::ModuleMap) {
756	CI.getLangOpts().setCompilingModule(LangOptions::CMK_ModuleMap);
757
758	std::string PresumedModuleMapFile;
759	unsigned OffsetToContents;
760	if (loadModuleMapForModuleBuild(CI, Input.isSystem(),
761	Input.isPreprocessed(),
762	PresumedModuleMapFile, OffsetToContents))
763	goto failure;
764
765	auto *CurrentModule = prepareToBuildModule(CI, Input.getFile());
766	if (!CurrentModule)
767	goto failure;
768
769	CurrentModule->PresumedModuleMapFile = PresumedModuleMapFile;
770
771	if (OffsetToContents)
772	// If the module contents are in the same file, skip to them.
773	CI.getPreprocessor().setSkipMainFilePreamble(OffsetToContents, true);
774	else {
775	// Otherwise, convert the module description to a suitable input buffer.
776	auto Buffer = getInputBufferForModule(CI, CurrentModule);
777	if (!Buffer)
778	goto failure;
779
780	// Reinitialize the main file entry to refer to the new input.
781	auto Kind = CurrentModule->IsSystem ? SrcMgr::C_System : SrcMgr::C_User;
782	auto &SourceMgr = CI.getSourceManager();
783	auto BufferID = SourceMgr.createFileID(std::move(Buffer), Kind);
784	(0) . __assert_fail ("BufferID.isValid() && \"couldn't creaate module buffer ID\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 784, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(BufferID.isValid() && "couldn't creaate module buffer ID");
785	SourceMgr.setMainFileID(BufferID);
786	}
787	}
788
789	// Initialize the action.
790	if (!BeginSourceFileAction(CI))
791	goto failure;
792
793	// If we were asked to load any module map files, do so now.
794	for (const auto &Filename : CI.getFrontendOpts().ModuleMapFiles) {
795	if (auto *File = CI.getFileManager().getFile(Filename))
796	CI.getPreprocessor().getHeaderSearchInfo().loadModuleMapFile(
797	File, /IsSystem/false);
798	else
799	CI.getDiagnostics().Report(diag::err_module_map_not_found) << Filename;
800	}
801
802	// Add a module declaration scope so that modules from -fmodule-map-file
803	// arguments may shadow modules found implicitly in search paths.
804	CI.getPreprocessor()
805	.getHeaderSearchInfo()
806	.getModuleMap()
807	.finishModuleDeclarationScope();
808
809	// Create the AST context and consumer unless this is a preprocessor only
810	// action.
811	if (!usesPreprocessorOnly()) {
812	// Parsing a model file should reuse the existing ASTContext.
813	if (!isModelParsingAction())
814	CI.createASTContext();
815
816	// For preprocessed files, check if the first line specifies the original
817	// source file name with a linemarker.
818	std::string PresumedInputFile = getCurrentFileOrBufferName();
819	if (Input.isPreprocessed())
820	ReadOriginalFileName(CI, PresumedInputFile);
821
822	std::unique_ptr<ASTConsumer> Consumer =
823	CreateWrappedASTConsumer(CI, PresumedInputFile);
824	if (!Consumer)
825	goto failure;
826
827	// FIXME: should not overwrite ASTMutationListener when parsing model files?
828	if (!isModelParsingAction())
829	CI.getASTContext().setASTMutationListener(Consumer->GetASTMutationListener());
830
831	if (!CI.getPreprocessorOpts().ChainedIncludes.empty()) {
832	// Convert headers to PCH and chain them.
833	IntrusiveRefCntPtr<ExternalSemaSource> source, FinalReader;
834	source = createChainedIncludesSource(CI, FinalReader);
835	if (!source)
836	goto failure;
837	CI.setModuleManager(static_cast<ASTReader *>(FinalReader.get()));
838	CI.getASTContext().setExternalSource(source);
839	} else if (CI.getLangOpts().Modules \|\|
840	!CI.getPreprocessorOpts().ImplicitPCHInclude.empty()) {
841	// Use PCM or PCH.
842	(0) . __assert_fail ("hasPCHSupport() && \"This action does not have PCH support!\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 842, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(hasPCHSupport() && "This action does not have PCH support!");
843	ASTDeserializationListener *DeserialListener =
844	Consumer->GetASTDeserializationListener();
845	bool DeleteDeserialListener = false;
846	if (CI.getPreprocessorOpts().DumpDeserializedPCHDecls) {
847	DeserialListener = new DeserializedDeclsDumper(DeserialListener,
848	DeleteDeserialListener);
849	DeleteDeserialListener = true;
850	}
851	if (!CI.getPreprocessorOpts().DeserializedPCHDeclsToErrorOn.empty()) {
852	DeserialListener = new DeserializedDeclsChecker(
853	CI.getASTContext(),
854	CI.getPreprocessorOpts().DeserializedPCHDeclsToErrorOn,
855	DeserialListener, DeleteDeserialListener);
856	DeleteDeserialListener = true;
857	}
858	if (!CI.getPreprocessorOpts().ImplicitPCHInclude.empty()) {
859	CI.createPCHExternalASTSource(
860	CI.getPreprocessorOpts().ImplicitPCHInclude,
861	CI.getPreprocessorOpts().DisablePCHValidation,
862	CI.getPreprocessorOpts().AllowPCHWithCompilerErrors, DeserialListener,
863	DeleteDeserialListener);
864	if (!CI.getASTContext().getExternalSource())
865	goto failure;
866	}
867	// If modules are enabled, create the module manager before creating
868	// any builtins, so that all declarations know that they might be
869	// extended by an external source.
870	if (CI.getLangOpts().Modules \|\| !CI.hasASTContext() \|\|
871	!CI.getASTContext().getExternalSource()) {
872	CI.createModuleManager();
873	CI.getModuleManager()->setDeserializationListener(DeserialListener,
874	DeleteDeserialListener);
875	}
876	}
877
878	CI.setASTConsumer(std::move(Consumer));
879	if (!CI.hasASTConsumer())
880	goto failure;
881	}
882
883	// Initialize built-in info as long as we aren't using an external AST
884	// source.
885	if (CI.getLangOpts().Modules \|\| !CI.hasASTContext() \|\|
886	!CI.getASTContext().getExternalSource()) {
887	Preprocessor &PP = CI.getPreprocessor();
888	PP.getBuiltinInfo().initializeBuiltins(PP.getIdentifierTable(),
889	PP.getLangOpts());
890	} else {
891	// FIXME: If this is a problem, recover from it by creating a multiplex
892	// source.
893	(0) . __assert_fail ("(!CI.getLangOpts().Modules \|\| CI.getModuleManager()) && \"modules enabled but created an external source that \" \"doesn't support modules\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 895, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert((!CI.getLangOpts().Modules \|\| CI.getModuleManager()) &&
894	(0) . __assert_fail ("(!CI.getLangOpts().Modules \|\| CI.getModuleManager()) && \"modules enabled but created an external source that \" \"doesn't support modules\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 895, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "modules enabled but created an external source that "
895	(0) . __assert_fail ("(!CI.getLangOpts().Modules \|\| CI.getModuleManager()) && \"modules enabled but created an external source that \" \"doesn't support modules\"", "/home/seafit/code_projects/clang_source/clang/lib/Frontend/FrontendAction.cpp", 895, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "doesn't support modules");
896	}
897
898	// If we were asked to load any module files, do so now.
899	for (const auto &ModuleFile : CI.getFrontendOpts().ModuleFiles)
900	if (!CI.loadModuleFile(ModuleFile))
901	goto failure;
902
903	// If there is a layout overrides file, attach an external AST source that
904	// provides the layouts from that file.
905	if (!CI.getFrontendOpts().OverrideRecordLayoutsFile.empty() &&
906	CI.hasASTContext() && !CI.getASTContext().getExternalSource()) {
907	IntrusiveRefCntPtr<ExternalASTSource>
908	Override(new LayoutOverrideSource(
909	CI.getFrontendOpts().OverrideRecordLayoutsFile));
910	CI.getASTContext().setExternalSource(Override);
911	}
912
913	return true;
914
915	// If we failed, reset state since the client will not end up calling the
916	// matching EndSourceFile().
917	failure:
918	if (HasBegunSourceFile)
919	CI.getDiagnosticClient().EndSourceFile();
920	CI.clearOutputFiles(/EraseFiles=/true);
921	CI.getLangOpts().setCompilingModule(LangOptions::CMK_None);
922	setCurrentInput(FrontendInputFile());
923	setCompilerInstance(nullptr);
924	return false;
925	}
926
927	bool FrontendAction::Execute() {
928	CompilerInstance &CI = getCompilerInstance();
929
930	if (CI.hasFrontendTimer()) {
931	llvm::TimeRegion Timer(CI.getFrontendTimer());
932	ExecuteAction();
933	}
934	else ExecuteAction();
935
936	// If we are supposed to rebuild the global module index, do so now unless
937	// there were any module-build failures.
938	if (CI.shouldBuildGlobalModuleIndex() && CI.hasFileManager() &&
939	CI.hasPreprocessor()) {
940	StringRef Cache =
941	CI.getPreprocessor().getHeaderSearchInfo().getModuleCachePath();
942	if (!Cache.empty())
943	GlobalModuleIndex::writeIndex(CI.getFileManager(),
944	CI.getPCHContainerReader(), Cache);
945	}
946
947	return true;
948	}
949
950	void FrontendAction::EndSourceFile() {
951	CompilerInstance &CI = getCompilerInstance();
952
953	// Inform the diagnostic client we are done with this source file.
954	CI.getDiagnosticClient().EndSourceFile();
955
956	// Inform the preprocessor we are done.
957	if (CI.hasPreprocessor())
958	CI.getPreprocessor().EndSourceFile();
959
960	// Finalize the action.
961	EndSourceFileAction();
962
963	// Sema references the ast consumer, so reset sema first.
964	//
965	// FIXME: There is more per-file stuff we could just drop here?
966	bool DisableFree = CI.getFrontendOpts().DisableFree;
967	if (DisableFree) {
968	CI.resetAndLeakSema();
969	CI.resetAndLeakASTContext();
970	llvm::BuryPointer(CI.takeASTConsumer().get());
971	} else {
972	CI.setSema(nullptr);
973	CI.setASTContext(nullptr);
974	CI.setASTConsumer(nullptr);
975	}
976
977	if (CI.getFrontendOpts().ShowStats) {
978	llvm::errs() << "\nSTATISTICS FOR '" << getCurrentFile() << "':\n";
979	CI.getPreprocessor().PrintStats();
980	CI.getPreprocessor().getIdentifierTable().PrintStats();
981	CI.getPreprocessor().getHeaderSearchInfo().PrintStats();
982	CI.getSourceManager().PrintStats();
983	llvm::errs() << "\n";
984	}
985
986	// Cleanup the output streams, and erase the output files if instructed by the
987	// FrontendAction.
988	CI.clearOutputFiles(/EraseFiles=/shouldEraseOutputFiles());
989
990	if (isCurrentFileAST()) {
991	if (DisableFree) {
992	CI.resetAndLeakPreprocessor();
993	CI.resetAndLeakSourceManager();
994	CI.resetAndLeakFileManager();
995	llvm::BuryPointer(std::move(CurrentASTUnit));
996	} else {
997	CI.setPreprocessor(nullptr);
998	CI.setSourceManager(nullptr);
999	CI.setFileManager(nullptr);
1000	}
1001	}
1002
1003	setCompilerInstance(nullptr);
1004	setCurrentInput(FrontendInputFile());
1005	CI.getLangOpts().setCompilingModule(LangOptions::CMK_None);
1006	}
1007
1008	bool FrontendAction::shouldEraseOutputFiles() {
1009	return getCompilerInstance().getDiagnostics().hasErrorOccurred();
1010	}
1011
1012	//===----------------------------------------------------------------------===//
1013	// Utility Actions
1014	//===----------------------------------------------------------------------===//
1015
1016	void ASTFrontendAction::ExecuteAction() {
1017	CompilerInstance &CI = getCompilerInstance();
1018	if (!CI.hasPreprocessor())
1019	return;
1020
1021	// FIXME: Move the truncation aspect of this into Sema, we delayed this till
1022	// here so the source manager would be initialized.
1023	if (hasCodeCompletionSupport() &&
1024	!CI.getFrontendOpts().CodeCompletionAt.FileName.empty())
1025	CI.createCodeCompletionConsumer();
1026
1027	// Use a code completion consumer?
1028	CodeCompleteConsumer *CompletionConsumer = nullptr;
1029	if (CI.hasCodeCompletionConsumer())
1030	CompletionConsumer = &CI.getCodeCompletionConsumer();
1031
1032	if (!CI.hasSema())
1033	CI.createSema(getTranslationUnitKind(), CompletionConsumer);
1034
1035	ParseAST(CI.getSema(), CI.getFrontendOpts().ShowStats,
1036	CI.getFrontendOpts().SkipFunctionBodies);
1037	}
1038
1039	void PluginASTAction::anchor() { }
1040
1041	std::unique_ptr<ASTConsumer>
1042	PreprocessorFrontendAction::CreateASTConsumer(CompilerInstance &CI,
1043	StringRef InFile) {
1044	llvm_unreachable("Invalid CreateASTConsumer on preprocessor action!");
1045	}
1046
1047	bool WrapperFrontendAction::PrepareToExecuteAction(CompilerInstance &CI) {
1048	return WrappedAction->PrepareToExecuteAction(CI);
1049	}
1050	std::unique_ptr<ASTConsumer>
1051	WrapperFrontendAction::CreateASTConsumer(CompilerInstance &CI,
1052	StringRef InFile) {
1053	return WrappedAction->CreateASTConsumer(CI, InFile);
1054	}
1055	bool WrapperFrontendAction::BeginInvocation(CompilerInstance &CI) {
1056	return WrappedAction->BeginInvocation(CI);
1057	}
1058	bool WrapperFrontendAction::BeginSourceFileAction(CompilerInstance &CI) {
1059	WrappedAction->setCurrentInput(getCurrentInput());
1060	WrappedAction->setCompilerInstance(&CI);
1061	auto Ret = WrappedAction->BeginSourceFileAction(CI);
1062	// BeginSourceFileAction may change CurrentInput, e.g. during module builds.
1063	setCurrentInput(WrappedAction->getCurrentInput());
1064	return Ret;
1065	}
1066	void WrapperFrontendAction::ExecuteAction() {
1067	WrappedAction->ExecuteAction();
1068	}
1069	void WrapperFrontendAction::EndSourceFileAction() {
1070	WrappedAction->EndSourceFileAction();
1071	}
1072
1073	bool WrapperFrontendAction::usesPreprocessorOnly() const {
1074	return WrappedAction->usesPreprocessorOnly();
1075	}
1076	TranslationUnitKind WrapperFrontendAction::getTranslationUnitKind() {
1077	return WrappedAction->getTranslationUnitKind();
1078	}
1079	bool WrapperFrontendAction::hasPCHSupport() const {
1080	return WrappedAction->hasPCHSupport();
1081	}
1082	bool WrapperFrontendAction::hasASTFileSupport() const {
1083	return WrappedAction->hasASTFileSupport();
1084	}
1085	bool WrapperFrontendAction::hasIRSupport() const {
1086	return WrappedAction->hasIRSupport();
1087	}
1088	bool WrapperFrontendAction::hasCodeCompletionSupport() const {
1089	return WrappedAction->hasCodeCompletionSupport();
1090	}
1091
1092	WrapperFrontendAction::WrapperFrontendAction(
1093	std::unique_ptr<FrontendAction> WrappedAction)
1094	: WrappedAction(std::move(WrappedAction)) {}
1095
1096

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