1 //===--- ARCMT.cpp - Migration to ARC mode --------------------------------===//
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 #include "Internals.h"
11 #include "clang/AST/ASTConsumer.h"
12 #include "clang/Basic/DiagnosticCategories.h"
13 #include "clang/Frontend/ASTUnit.h"
14 #include "clang/Frontend/CompilerInstance.h"
15 #include "clang/Frontend/FrontendAction.h"
16 #include "clang/Frontend/TextDiagnosticPrinter.h"
17 #include "clang/Frontend/Utils.h"
18 #include "clang/Lex/Preprocessor.h"
19 #include "clang/Rewrite/Core/Rewriter.h"
20 #include "clang/Sema/SemaDiagnostic.h"
21 #include "clang/Serialization/ASTReader.h"
22 #include "llvm/ADT/Triple.h"
23 #include "llvm/Support/MemoryBuffer.h"
24 using namespace clang;
25 using namespace arcmt;
26
clearDiagnostic(ArrayRef<unsigned> IDs,SourceRange range)27 bool CapturedDiagList::clearDiagnostic(ArrayRef<unsigned> IDs,
28 SourceRange range) {
29 if (range.isInvalid())
30 return false;
31
32 bool cleared = false;
33 ListTy::iterator I = List.begin();
34 while (I != List.end()) {
35 FullSourceLoc diagLoc = I->getLocation();
36 if ((IDs.empty() || // empty means clear all diagnostics in the range.
37 std::find(IDs.begin(), IDs.end(), I->getID()) != IDs.end()) &&
38 !diagLoc.isBeforeInTranslationUnitThan(range.getBegin()) &&
39 (diagLoc == range.getEnd() ||
40 diagLoc.isBeforeInTranslationUnitThan(range.getEnd()))) {
41 cleared = true;
42 ListTy::iterator eraseS = I++;
43 if (eraseS->getLevel() != DiagnosticsEngine::Note)
44 while (I != List.end() && I->getLevel() == DiagnosticsEngine::Note)
45 ++I;
46 // Clear the diagnostic and any notes following it.
47 I = List.erase(eraseS, I);
48 continue;
49 }
50
51 ++I;
52 }
53
54 return cleared;
55 }
56
hasDiagnostic(ArrayRef<unsigned> IDs,SourceRange range) const57 bool CapturedDiagList::hasDiagnostic(ArrayRef<unsigned> IDs,
58 SourceRange range) const {
59 if (range.isInvalid())
60 return false;
61
62 ListTy::const_iterator I = List.begin();
63 while (I != List.end()) {
64 FullSourceLoc diagLoc = I->getLocation();
65 if ((IDs.empty() || // empty means any diagnostic in the range.
66 std::find(IDs.begin(), IDs.end(), I->getID()) != IDs.end()) &&
67 !diagLoc.isBeforeInTranslationUnitThan(range.getBegin()) &&
68 (diagLoc == range.getEnd() ||
69 diagLoc.isBeforeInTranslationUnitThan(range.getEnd()))) {
70 return true;
71 }
72
73 ++I;
74 }
75
76 return false;
77 }
78
reportDiagnostics(DiagnosticsEngine & Diags) const79 void CapturedDiagList::reportDiagnostics(DiagnosticsEngine &Diags) const {
80 for (ListTy::const_iterator I = List.begin(), E = List.end(); I != E; ++I)
81 Diags.Report(*I);
82 }
83
hasErrors() const84 bool CapturedDiagList::hasErrors() const {
85 for (ListTy::const_iterator I = List.begin(), E = List.end(); I != E; ++I)
86 if (I->getLevel() >= DiagnosticsEngine::Error)
87 return true;
88
89 return false;
90 }
91
92 namespace {
93
94 class CaptureDiagnosticConsumer : public DiagnosticConsumer {
95 DiagnosticsEngine &Diags;
96 DiagnosticConsumer &DiagClient;
97 CapturedDiagList &CapturedDiags;
98 bool HasBegunSourceFile;
99 public:
CaptureDiagnosticConsumer(DiagnosticsEngine & diags,DiagnosticConsumer & client,CapturedDiagList & capturedDiags)100 CaptureDiagnosticConsumer(DiagnosticsEngine &diags,
101 DiagnosticConsumer &client,
102 CapturedDiagList &capturedDiags)
103 : Diags(diags), DiagClient(client), CapturedDiags(capturedDiags),
104 HasBegunSourceFile(false) { }
105
BeginSourceFile(const LangOptions & Opts,const Preprocessor * PP)106 void BeginSourceFile(const LangOptions &Opts,
107 const Preprocessor *PP) override {
108 // Pass BeginSourceFile message onto DiagClient on first call.
109 // The corresponding EndSourceFile call will be made from an
110 // explicit call to FinishCapture.
111 if (!HasBegunSourceFile) {
112 DiagClient.BeginSourceFile(Opts, PP);
113 HasBegunSourceFile = true;
114 }
115 }
116
FinishCapture()117 void FinishCapture() {
118 // Call EndSourceFile on DiagClient on completion of capture to
119 // enable VerifyDiagnosticConsumer to check diagnostics *after*
120 // it has received the diagnostic list.
121 if (HasBegunSourceFile) {
122 DiagClient.EndSourceFile();
123 HasBegunSourceFile = false;
124 }
125 }
126
~CaptureDiagnosticConsumer()127 ~CaptureDiagnosticConsumer() override {
128 assert(!HasBegunSourceFile && "FinishCapture not called!");
129 }
130
HandleDiagnostic(DiagnosticsEngine::Level level,const Diagnostic & Info)131 void HandleDiagnostic(DiagnosticsEngine::Level level,
132 const Diagnostic &Info) override {
133 if (DiagnosticIDs::isARCDiagnostic(Info.getID()) ||
134 level >= DiagnosticsEngine::Error || level == DiagnosticsEngine::Note) {
135 if (Info.getLocation().isValid())
136 CapturedDiags.push_back(StoredDiagnostic(level, Info));
137 return;
138 }
139
140 // Non-ARC warnings are ignored.
141 Diags.setLastDiagnosticIgnored();
142 }
143 };
144
145 } // end anonymous namespace
146
HasARCRuntime(CompilerInvocation & origCI)147 static bool HasARCRuntime(CompilerInvocation &origCI) {
148 // This duplicates some functionality from Darwin::AddDeploymentTarget
149 // but this function is well defined, so keep it decoupled from the driver
150 // and avoid unrelated complications.
151 llvm::Triple triple(origCI.getTargetOpts().Triple);
152
153 if (triple.isiOS())
154 return triple.getOSMajorVersion() >= 5;
155
156 if (triple.getOS() == llvm::Triple::Darwin)
157 return triple.getOSMajorVersion() >= 11;
158
159 if (triple.getOS() == llvm::Triple::MacOSX) {
160 unsigned Major, Minor, Micro;
161 triple.getOSVersion(Major, Minor, Micro);
162 return Major > 10 || (Major == 10 && Minor >= 7);
163 }
164
165 return false;
166 }
167
168 static CompilerInvocation *
createInvocationForMigration(CompilerInvocation & origCI)169 createInvocationForMigration(CompilerInvocation &origCI) {
170 std::unique_ptr<CompilerInvocation> CInvok;
171 CInvok.reset(new CompilerInvocation(origCI));
172 PreprocessorOptions &PPOpts = CInvok->getPreprocessorOpts();
173 if (!PPOpts.ImplicitPCHInclude.empty()) {
174 // We can't use a PCH because it was likely built in non-ARC mode and we
175 // want to parse in ARC. Include the original header.
176 FileManager FileMgr(origCI.getFileSystemOpts());
177 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
178 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
179 new DiagnosticsEngine(DiagID, &origCI.getDiagnosticOpts(),
180 new IgnoringDiagConsumer()));
181 std::string OriginalFile =
182 ASTReader::getOriginalSourceFile(PPOpts.ImplicitPCHInclude,
183 FileMgr, *Diags);
184 if (!OriginalFile.empty())
185 PPOpts.Includes.insert(PPOpts.Includes.begin(), OriginalFile);
186 PPOpts.ImplicitPCHInclude.clear();
187 }
188 // FIXME: Get the original header of a PTH as well.
189 CInvok->getPreprocessorOpts().ImplicitPTHInclude.clear();
190 std::string define = getARCMTMacroName();
191 define += '=';
192 CInvok->getPreprocessorOpts().addMacroDef(define);
193 CInvok->getLangOpts()->ObjCAutoRefCount = true;
194 CInvok->getLangOpts()->setGC(LangOptions::NonGC);
195 CInvok->getDiagnosticOpts().ErrorLimit = 0;
196 CInvok->getDiagnosticOpts().PedanticErrors = 0;
197
198 // Ignore -Werror flags when migrating.
199 std::vector<std::string> WarnOpts;
200 for (std::vector<std::string>::iterator
201 I = CInvok->getDiagnosticOpts().Warnings.begin(),
202 E = CInvok->getDiagnosticOpts().Warnings.end(); I != E; ++I) {
203 if (!StringRef(*I).startswith("error"))
204 WarnOpts.push_back(*I);
205 }
206 WarnOpts.push_back("error=arc-unsafe-retained-assign");
207 CInvok->getDiagnosticOpts().Warnings = std::move(WarnOpts);
208
209 CInvok->getLangOpts()->ObjCARCWeak = HasARCRuntime(origCI);
210
211 return CInvok.release();
212 }
213
emitPremigrationErrors(const CapturedDiagList & arcDiags,DiagnosticOptions * diagOpts,Preprocessor & PP)214 static void emitPremigrationErrors(const CapturedDiagList &arcDiags,
215 DiagnosticOptions *diagOpts,
216 Preprocessor &PP) {
217 TextDiagnosticPrinter printer(llvm::errs(), diagOpts);
218 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
219 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
220 new DiagnosticsEngine(DiagID, diagOpts, &printer,
221 /*ShouldOwnClient=*/false));
222 Diags->setSourceManager(&PP.getSourceManager());
223
224 printer.BeginSourceFile(PP.getLangOpts(), &PP);
225 arcDiags.reportDiagnostics(*Diags);
226 printer.EndSourceFile();
227 }
228
229 //===----------------------------------------------------------------------===//
230 // checkForManualIssues.
231 //===----------------------------------------------------------------------===//
232
checkForManualIssues(CompilerInvocation & origCI,const FrontendInputFile & Input,DiagnosticConsumer * DiagClient,bool emitPremigrationARCErrors,StringRef plistOut)233 bool arcmt::checkForManualIssues(CompilerInvocation &origCI,
234 const FrontendInputFile &Input,
235 DiagnosticConsumer *DiagClient,
236 bool emitPremigrationARCErrors,
237 StringRef plistOut) {
238 if (!origCI.getLangOpts()->ObjC1)
239 return false;
240
241 LangOptions::GCMode OrigGCMode = origCI.getLangOpts()->getGC();
242 bool NoNSAllocReallocError = origCI.getMigratorOpts().NoNSAllocReallocError;
243 bool NoFinalizeRemoval = origCI.getMigratorOpts().NoFinalizeRemoval;
244
245 std::vector<TransformFn> transforms = arcmt::getAllTransformations(OrigGCMode,
246 NoFinalizeRemoval);
247 assert(!transforms.empty());
248
249 std::unique_ptr<CompilerInvocation> CInvok;
250 CInvok.reset(createInvocationForMigration(origCI));
251 CInvok->getFrontendOpts().Inputs.clear();
252 CInvok->getFrontendOpts().Inputs.push_back(Input);
253
254 CapturedDiagList capturedDiags;
255
256 assert(DiagClient);
257 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
258 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
259 new DiagnosticsEngine(DiagID, &origCI.getDiagnosticOpts(),
260 DiagClient, /*ShouldOwnClient=*/false));
261
262 // Filter of all diagnostics.
263 CaptureDiagnosticConsumer errRec(*Diags, *DiagClient, capturedDiags);
264 Diags->setClient(&errRec, /*ShouldOwnClient=*/false);
265
266 std::unique_ptr<ASTUnit> Unit(
267 ASTUnit::LoadFromCompilerInvocationAction(CInvok.release(), Diags));
268 if (!Unit) {
269 errRec.FinishCapture();
270 return true;
271 }
272
273 // Don't filter diagnostics anymore.
274 Diags->setClient(DiagClient, /*ShouldOwnClient=*/false);
275
276 ASTContext &Ctx = Unit->getASTContext();
277
278 if (Diags->hasFatalErrorOccurred()) {
279 Diags->Reset();
280 DiagClient->BeginSourceFile(Ctx.getLangOpts(), &Unit->getPreprocessor());
281 capturedDiags.reportDiagnostics(*Diags);
282 DiagClient->EndSourceFile();
283 errRec.FinishCapture();
284 return true;
285 }
286
287 if (emitPremigrationARCErrors)
288 emitPremigrationErrors(capturedDiags, &origCI.getDiagnosticOpts(),
289 Unit->getPreprocessor());
290 if (!plistOut.empty()) {
291 SmallVector<StoredDiagnostic, 8> arcDiags;
292 for (CapturedDiagList::iterator
293 I = capturedDiags.begin(), E = capturedDiags.end(); I != E; ++I)
294 arcDiags.push_back(*I);
295 writeARCDiagsToPlist(plistOut, arcDiags,
296 Ctx.getSourceManager(), Ctx.getLangOpts());
297 }
298
299 // After parsing of source files ended, we want to reuse the
300 // diagnostics objects to emit further diagnostics.
301 // We call BeginSourceFile because DiagnosticConsumer requires that
302 // diagnostics with source range information are emitted only in between
303 // BeginSourceFile() and EndSourceFile().
304 DiagClient->BeginSourceFile(Ctx.getLangOpts(), &Unit->getPreprocessor());
305
306 // No macros will be added since we are just checking and we won't modify
307 // source code.
308 std::vector<SourceLocation> ARCMTMacroLocs;
309
310 TransformActions testAct(*Diags, capturedDiags, Ctx, Unit->getPreprocessor());
311 MigrationPass pass(Ctx, OrigGCMode, Unit->getSema(), testAct, capturedDiags,
312 ARCMTMacroLocs);
313 pass.setNoFinalizeRemoval(NoFinalizeRemoval);
314 if (!NoNSAllocReallocError)
315 Diags->setSeverity(diag::warn_arcmt_nsalloc_realloc, diag::Severity::Error,
316 SourceLocation());
317
318 for (unsigned i=0, e = transforms.size(); i != e; ++i)
319 transforms[i](pass);
320
321 capturedDiags.reportDiagnostics(*Diags);
322
323 DiagClient->EndSourceFile();
324 errRec.FinishCapture();
325
326 return capturedDiags.hasErrors() || testAct.hasReportedErrors();
327 }
328
329 //===----------------------------------------------------------------------===//
330 // applyTransformations.
331 //===----------------------------------------------------------------------===//
332
applyTransforms(CompilerInvocation & origCI,const FrontendInputFile & Input,DiagnosticConsumer * DiagClient,StringRef outputDir,bool emitPremigrationARCErrors,StringRef plistOut)333 static bool applyTransforms(CompilerInvocation &origCI,
334 const FrontendInputFile &Input,
335 DiagnosticConsumer *DiagClient,
336 StringRef outputDir,
337 bool emitPremigrationARCErrors,
338 StringRef plistOut) {
339 if (!origCI.getLangOpts()->ObjC1)
340 return false;
341
342 LangOptions::GCMode OrigGCMode = origCI.getLangOpts()->getGC();
343
344 // Make sure checking is successful first.
345 CompilerInvocation CInvokForCheck(origCI);
346 if (arcmt::checkForManualIssues(CInvokForCheck, Input, DiagClient,
347 emitPremigrationARCErrors, plistOut))
348 return true;
349
350 CompilerInvocation CInvok(origCI);
351 CInvok.getFrontendOpts().Inputs.clear();
352 CInvok.getFrontendOpts().Inputs.push_back(Input);
353
354 MigrationProcess migration(CInvok, DiagClient, outputDir);
355 bool NoFinalizeRemoval = origCI.getMigratorOpts().NoFinalizeRemoval;
356
357 std::vector<TransformFn> transforms = arcmt::getAllTransformations(OrigGCMode,
358 NoFinalizeRemoval);
359 assert(!transforms.empty());
360
361 for (unsigned i=0, e = transforms.size(); i != e; ++i) {
362 bool err = migration.applyTransform(transforms[i]);
363 if (err) return true;
364 }
365
366 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
367 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
368 new DiagnosticsEngine(DiagID, &origCI.getDiagnosticOpts(),
369 DiagClient, /*ShouldOwnClient=*/false));
370
371 if (outputDir.empty()) {
372 origCI.getLangOpts()->ObjCAutoRefCount = true;
373 return migration.getRemapper().overwriteOriginal(*Diags);
374 } else {
375 return migration.getRemapper().flushToDisk(outputDir, *Diags);
376 }
377 }
378
applyTransformations(CompilerInvocation & origCI,const FrontendInputFile & Input,DiagnosticConsumer * DiagClient)379 bool arcmt::applyTransformations(CompilerInvocation &origCI,
380 const FrontendInputFile &Input,
381 DiagnosticConsumer *DiagClient) {
382 return applyTransforms(origCI, Input, DiagClient,
383 StringRef(), false, StringRef());
384 }
385
migrateWithTemporaryFiles(CompilerInvocation & origCI,const FrontendInputFile & Input,DiagnosticConsumer * DiagClient,StringRef outputDir,bool emitPremigrationARCErrors,StringRef plistOut)386 bool arcmt::migrateWithTemporaryFiles(CompilerInvocation &origCI,
387 const FrontendInputFile &Input,
388 DiagnosticConsumer *DiagClient,
389 StringRef outputDir,
390 bool emitPremigrationARCErrors,
391 StringRef plistOut) {
392 assert(!outputDir.empty() && "Expected output directory path");
393 return applyTransforms(origCI, Input, DiagClient,
394 outputDir, emitPremigrationARCErrors, plistOut);
395 }
396
getFileRemappings(std::vector<std::pair<std::string,std::string>> & remap,StringRef outputDir,DiagnosticConsumer * DiagClient)397 bool arcmt::getFileRemappings(std::vector<std::pair<std::string,std::string> > &
398 remap,
399 StringRef outputDir,
400 DiagnosticConsumer *DiagClient) {
401 assert(!outputDir.empty());
402
403 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
404 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
405 new DiagnosticsEngine(DiagID, new DiagnosticOptions,
406 DiagClient, /*ShouldOwnClient=*/false));
407
408 FileRemapper remapper;
409 bool err = remapper.initFromDisk(outputDir, *Diags,
410 /*ignoreIfFilesChanged=*/true);
411 if (err)
412 return true;
413
414 PreprocessorOptions PPOpts;
415 remapper.applyMappings(PPOpts);
416 remap = PPOpts.RemappedFiles;
417
418 return false;
419 }
420
421
422 //===----------------------------------------------------------------------===//
423 // CollectTransformActions.
424 //===----------------------------------------------------------------------===//
425
426 namespace {
427
428 class ARCMTMacroTrackerPPCallbacks : public PPCallbacks {
429 std::vector<SourceLocation> &ARCMTMacroLocs;
430
431 public:
ARCMTMacroTrackerPPCallbacks(std::vector<SourceLocation> & ARCMTMacroLocs)432 ARCMTMacroTrackerPPCallbacks(std::vector<SourceLocation> &ARCMTMacroLocs)
433 : ARCMTMacroLocs(ARCMTMacroLocs) { }
434
MacroExpands(const Token & MacroNameTok,const MacroDirective * MD,SourceRange Range,const MacroArgs * Args)435 void MacroExpands(const Token &MacroNameTok, const MacroDirective *MD,
436 SourceRange Range, const MacroArgs *Args) override {
437 if (MacroNameTok.getIdentifierInfo()->getName() == getARCMTMacroName())
438 ARCMTMacroLocs.push_back(MacroNameTok.getLocation());
439 }
440 };
441
442 class ARCMTMacroTrackerAction : public ASTFrontendAction {
443 std::vector<SourceLocation> &ARCMTMacroLocs;
444
445 public:
ARCMTMacroTrackerAction(std::vector<SourceLocation> & ARCMTMacroLocs)446 ARCMTMacroTrackerAction(std::vector<SourceLocation> &ARCMTMacroLocs)
447 : ARCMTMacroLocs(ARCMTMacroLocs) { }
448
CreateASTConsumer(CompilerInstance & CI,StringRef InFile)449 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
450 StringRef InFile) override {
451 CI.getPreprocessor().addPPCallbacks(
452 llvm::make_unique<ARCMTMacroTrackerPPCallbacks>(ARCMTMacroLocs));
453 return llvm::make_unique<ASTConsumer>();
454 }
455 };
456
457 class RewritesApplicator : public TransformActions::RewriteReceiver {
458 Rewriter &rewriter;
459 MigrationProcess::RewriteListener *Listener;
460
461 public:
RewritesApplicator(Rewriter & rewriter,ASTContext & ctx,MigrationProcess::RewriteListener * listener)462 RewritesApplicator(Rewriter &rewriter, ASTContext &ctx,
463 MigrationProcess::RewriteListener *listener)
464 : rewriter(rewriter), Listener(listener) {
465 if (Listener)
466 Listener->start(ctx);
467 }
~RewritesApplicator()468 ~RewritesApplicator() override {
469 if (Listener)
470 Listener->finish();
471 }
472
insert(SourceLocation loc,StringRef text)473 void insert(SourceLocation loc, StringRef text) override {
474 bool err = rewriter.InsertText(loc, text, /*InsertAfter=*/true,
475 /*indentNewLines=*/true);
476 if (!err && Listener)
477 Listener->insert(loc, text);
478 }
479
remove(CharSourceRange range)480 void remove(CharSourceRange range) override {
481 Rewriter::RewriteOptions removeOpts;
482 removeOpts.IncludeInsertsAtBeginOfRange = false;
483 removeOpts.IncludeInsertsAtEndOfRange = false;
484 removeOpts.RemoveLineIfEmpty = true;
485
486 bool err = rewriter.RemoveText(range, removeOpts);
487 if (!err && Listener)
488 Listener->remove(range);
489 }
490
increaseIndentation(CharSourceRange range,SourceLocation parentIndent)491 void increaseIndentation(CharSourceRange range,
492 SourceLocation parentIndent) override {
493 rewriter.IncreaseIndentation(range, parentIndent);
494 }
495 };
496
497 } // end anonymous namespace.
498
499 /// \brief Anchor for VTable.
~RewriteListener()500 MigrationProcess::RewriteListener::~RewriteListener() { }
501
MigrationProcess(const CompilerInvocation & CI,DiagnosticConsumer * diagClient,StringRef outputDir)502 MigrationProcess::MigrationProcess(const CompilerInvocation &CI,
503 DiagnosticConsumer *diagClient,
504 StringRef outputDir)
505 : OrigCI(CI), DiagClient(diagClient), HadARCErrors(false) {
506 if (!outputDir.empty()) {
507 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
508 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
509 new DiagnosticsEngine(DiagID, &CI.getDiagnosticOpts(),
510 DiagClient, /*ShouldOwnClient=*/false));
511 Remapper.initFromDisk(outputDir, *Diags, /*ignoreIfFilesChanges=*/true);
512 }
513 }
514
applyTransform(TransformFn trans,RewriteListener * listener)515 bool MigrationProcess::applyTransform(TransformFn trans,
516 RewriteListener *listener) {
517 std::unique_ptr<CompilerInvocation> CInvok;
518 CInvok.reset(createInvocationForMigration(OrigCI));
519 CInvok->getDiagnosticOpts().IgnoreWarnings = true;
520
521 Remapper.applyMappings(CInvok->getPreprocessorOpts());
522
523 CapturedDiagList capturedDiags;
524 std::vector<SourceLocation> ARCMTMacroLocs;
525
526 assert(DiagClient);
527 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
528 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
529 new DiagnosticsEngine(DiagID, new DiagnosticOptions,
530 DiagClient, /*ShouldOwnClient=*/false));
531
532 // Filter of all diagnostics.
533 CaptureDiagnosticConsumer errRec(*Diags, *DiagClient, capturedDiags);
534 Diags->setClient(&errRec, /*ShouldOwnClient=*/false);
535
536 std::unique_ptr<ARCMTMacroTrackerAction> ASTAction;
537 ASTAction.reset(new ARCMTMacroTrackerAction(ARCMTMacroLocs));
538
539 std::unique_ptr<ASTUnit> Unit(ASTUnit::LoadFromCompilerInvocationAction(
540 CInvok.release(), Diags, ASTAction.get()));
541 if (!Unit) {
542 errRec.FinishCapture();
543 return true;
544 }
545 Unit->setOwnsRemappedFileBuffers(false); // FileRemapper manages that.
546
547 HadARCErrors = HadARCErrors || capturedDiags.hasErrors();
548
549 // Don't filter diagnostics anymore.
550 Diags->setClient(DiagClient, /*ShouldOwnClient=*/false);
551
552 ASTContext &Ctx = Unit->getASTContext();
553
554 if (Diags->hasFatalErrorOccurred()) {
555 Diags->Reset();
556 DiagClient->BeginSourceFile(Ctx.getLangOpts(), &Unit->getPreprocessor());
557 capturedDiags.reportDiagnostics(*Diags);
558 DiagClient->EndSourceFile();
559 errRec.FinishCapture();
560 return true;
561 }
562
563 // After parsing of source files ended, we want to reuse the
564 // diagnostics objects to emit further diagnostics.
565 // We call BeginSourceFile because DiagnosticConsumer requires that
566 // diagnostics with source range information are emitted only in between
567 // BeginSourceFile() and EndSourceFile().
568 DiagClient->BeginSourceFile(Ctx.getLangOpts(), &Unit->getPreprocessor());
569
570 Rewriter rewriter(Ctx.getSourceManager(), Ctx.getLangOpts());
571 TransformActions TA(*Diags, capturedDiags, Ctx, Unit->getPreprocessor());
572 MigrationPass pass(Ctx, OrigCI.getLangOpts()->getGC(),
573 Unit->getSema(), TA, capturedDiags, ARCMTMacroLocs);
574
575 trans(pass);
576
577 {
578 RewritesApplicator applicator(rewriter, Ctx, listener);
579 TA.applyRewrites(applicator);
580 }
581
582 DiagClient->EndSourceFile();
583 errRec.FinishCapture();
584
585 if (DiagClient->getNumErrors())
586 return true;
587
588 for (Rewriter::buffer_iterator
589 I = rewriter.buffer_begin(), E = rewriter.buffer_end(); I != E; ++I) {
590 FileID FID = I->first;
591 RewriteBuffer &buf = I->second;
592 const FileEntry *file = Ctx.getSourceManager().getFileEntryForID(FID);
593 assert(file);
594 std::string newFname = file->getName();
595 newFname += "-trans";
596 SmallString<512> newText;
597 llvm::raw_svector_ostream vecOS(newText);
598 buf.write(vecOS);
599 vecOS.flush();
600 std::unique_ptr<llvm::MemoryBuffer> memBuf(
601 llvm::MemoryBuffer::getMemBufferCopy(
602 StringRef(newText.data(), newText.size()), newFname));
603 SmallString<64> filePath(file->getName());
604 Unit->getFileManager().FixupRelativePath(filePath);
605 Remapper.remap(filePath.str(), std::move(memBuf));
606 }
607
608 return false;
609 }
610