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 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 57 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 79 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 84 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: 100 CaptureDiagnosticConsumer(DiagnosticsEngine &diags, 101 DiagnosticConsumer &client, 102 CapturedDiagList &capturedDiags) 103 : Diags(diags), DiagClient(client), CapturedDiags(capturedDiags), 104 HasBegunSourceFile(false) { } 105 106 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 } 116 117 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 } 126 127 ~CaptureDiagnosticConsumer() override { 128 assert(!HasBegunSourceFile && "FinishCapture not called!"); 129 } 130 131 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 146 147 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 * 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 } 213 214 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 //===----------------------------------------------------------------------===// 232 233 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 //===----------------------------------------------------------------------===// 332 333 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 } 378 379 bool arcmt::applyTransformations(CompilerInvocation &origCI, 380 const FrontendInputFile &Input, 381 DiagnosticConsumer *DiagClient) { 382 return applyTransforms(origCI, Input, DiagClient, 383 StringRef(), false, StringRef()); 384 } 385 386 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 } 396 397 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: 432 ARCMTMacroTrackerPPCallbacks(std::vector<SourceLocation> &ARCMTMacroLocs) 433 : ARCMTMacroLocs(ARCMTMacroLocs) { } 434 435 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: 446 ARCMTMacroTrackerAction(std::vector<SourceLocation> &ARCMTMacroLocs) 447 : ARCMTMacroLocs(ARCMTMacroLocs) { } 448 449 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: 462 RewritesApplicator(Rewriter &rewriter, ASTContext &ctx, 463 MigrationProcess::RewriteListener *listener) 464 : rewriter(rewriter), Listener(listener) { 465 if (Listener) 466 Listener->start(ctx); 467 } 468 ~RewritesApplicator() override { 469 if (Listener) 470 Listener->finish(); 471 } 472 473 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 } 479 480 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 } 490 491 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. 500 MigrationProcess::RewriteListener::~RewriteListener() { } 501 502 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 } 514 515 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