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comparison clang/lib/ARCMigrate/ARCMT.cpp @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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children 2e18cbf3894f
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147:c2174574ed3a 150:1d019706d866
1 //===--- ARCMT.cpp - Migration to ARC mode --------------------------------===//
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 "Internals.h"
10 #include "clang/ARCMigrate/ARCMT.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/Lex/PreprocessorOptions.h"
20 #include "clang/Rewrite/Core/Rewriter.h"
21 #include "clang/Sema/SemaDiagnostic.h"
22 #include "clang/Serialization/ASTReader.h"
23 #include "llvm/ADT/Triple.h"
24 #include "llvm/Support/MemoryBuffer.h"
25 #include <utility>
26 using namespace clang;
27 using namespace arcmt;
28
29 bool CapturedDiagList::clearDiagnostic(ArrayRef<unsigned> IDs,
30 SourceRange range) {
31 if (range.isInvalid())
32 return false;
33
34 bool cleared = false;
35 ListTy::iterator I = List.begin();
36 while (I != List.end()) {
37 FullSourceLoc diagLoc = I->getLocation();
38 if ((IDs.empty() || // empty means clear all diagnostics in the range.
39 llvm::is_contained(IDs, I->getID())) &&
40 !diagLoc.isBeforeInTranslationUnitThan(range.getBegin()) &&
41 (diagLoc == range.getEnd() ||
42 diagLoc.isBeforeInTranslationUnitThan(range.getEnd()))) {
43 cleared = true;
44 ListTy::iterator eraseS = I++;
45 if (eraseS->getLevel() != DiagnosticsEngine::Note)
46 while (I != List.end() && I->getLevel() == DiagnosticsEngine::Note)
47 ++I;
48 // Clear the diagnostic and any notes following it.
49 I = List.erase(eraseS, I);
50 continue;
51 }
52
53 ++I;
54 }
55
56 return cleared;
57 }
58
59 bool CapturedDiagList::hasDiagnostic(ArrayRef<unsigned> IDs,
60 SourceRange range) const {
61 if (range.isInvalid())
62 return false;
63
64 ListTy::const_iterator I = List.begin();
65 while (I != List.end()) {
66 FullSourceLoc diagLoc = I->getLocation();
67 if ((IDs.empty() || // empty means any diagnostic in the range.
68 llvm::find(IDs, I->getID()) != IDs.end()) &&
69 !diagLoc.isBeforeInTranslationUnitThan(range.getBegin()) &&
70 (diagLoc == range.getEnd() ||
71 diagLoc.isBeforeInTranslationUnitThan(range.getEnd()))) {
72 return true;
73 }
74
75 ++I;
76 }
77
78 return false;
79 }
80
81 void CapturedDiagList::reportDiagnostics(DiagnosticsEngine &Diags) const {
82 for (ListTy::const_iterator I = List.begin(), E = List.end(); I != E; ++I)
83 Diags.Report(*I);
84 }
85
86 bool CapturedDiagList::hasErrors() const {
87 for (ListTy::const_iterator I = List.begin(), E = List.end(); I != E; ++I)
88 if (I->getLevel() >= DiagnosticsEngine::Error)
89 return true;
90
91 return false;
92 }
93
94 namespace {
95
96 class CaptureDiagnosticConsumer : public DiagnosticConsumer {
97 DiagnosticsEngine &Diags;
98 DiagnosticConsumer &DiagClient;
99 CapturedDiagList &CapturedDiags;
100 bool HasBegunSourceFile;
101 public:
102 CaptureDiagnosticConsumer(DiagnosticsEngine &diags,
103 DiagnosticConsumer &client,
104 CapturedDiagList &capturedDiags)
105 : Diags(diags), DiagClient(client), CapturedDiags(capturedDiags),
106 HasBegunSourceFile(false) { }
107
108 void BeginSourceFile(const LangOptions &Opts,
109 const Preprocessor *PP) override {
110 // Pass BeginSourceFile message onto DiagClient on first call.
111 // The corresponding EndSourceFile call will be made from an
112 // explicit call to FinishCapture.
113 if (!HasBegunSourceFile) {
114 DiagClient.BeginSourceFile(Opts, PP);
115 HasBegunSourceFile = true;
116 }
117 }
118
119 void FinishCapture() {
120 // Call EndSourceFile on DiagClient on completion of capture to
121 // enable VerifyDiagnosticConsumer to check diagnostics *after*
122 // it has received the diagnostic list.
123 if (HasBegunSourceFile) {
124 DiagClient.EndSourceFile();
125 HasBegunSourceFile = false;
126 }
127 }
128
129 ~CaptureDiagnosticConsumer() override {
130 assert(!HasBegunSourceFile && "FinishCapture not called!");
131 }
132
133 void HandleDiagnostic(DiagnosticsEngine::Level level,
134 const Diagnostic &Info) override {
135 if (DiagnosticIDs::isARCDiagnostic(Info.getID()) ||
136 level >= DiagnosticsEngine::Error || level == DiagnosticsEngine::Note) {
137 if (Info.getLocation().isValid())
138 CapturedDiags.push_back(StoredDiagnostic(level, Info));
139 return;
140 }
141
142 // Non-ARC warnings are ignored.
143 Diags.setLastDiagnosticIgnored(true);
144 }
145 };
146
147 } // end anonymous namespace
148
149 static bool HasARCRuntime(CompilerInvocation &origCI) {
150 // This duplicates some functionality from Darwin::AddDeploymentTarget
151 // but this function is well defined, so keep it decoupled from the driver
152 // and avoid unrelated complications.
153 llvm::Triple triple(origCI.getTargetOpts().Triple);
154
155 if (triple.isiOS())
156 return triple.getOSMajorVersion() >= 5;
157
158 if (triple.isWatchOS())
159 return true;
160
161 if (triple.getOS() == llvm::Triple::Darwin)
162 return triple.getOSMajorVersion() >= 11;
163
164 if (triple.getOS() == llvm::Triple::MacOSX) {
165 unsigned Major, Minor, Micro;
166 triple.getOSVersion(Major, Minor, Micro);
167 return Major > 10 || (Major == 10 && Minor >= 7);
168 }
169
170 return false;
171 }
172
173 static CompilerInvocation *
174 createInvocationForMigration(CompilerInvocation &origCI,
175 const PCHContainerReader &PCHContainerRdr) {
176 std::unique_ptr<CompilerInvocation> CInvok;
177 CInvok.reset(new CompilerInvocation(origCI));
178 PreprocessorOptions &PPOpts = CInvok->getPreprocessorOpts();
179 if (!PPOpts.ImplicitPCHInclude.empty()) {
180 // We can't use a PCH because it was likely built in non-ARC mode and we
181 // want to parse in ARC. Include the original header.
182 FileManager FileMgr(origCI.getFileSystemOpts());
183 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
184 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
185 new DiagnosticsEngine(DiagID, &origCI.getDiagnosticOpts(),
186 new IgnoringDiagConsumer()));
187 std::string OriginalFile = ASTReader::getOriginalSourceFile(
188 PPOpts.ImplicitPCHInclude, FileMgr, PCHContainerRdr, *Diags);
189 if (!OriginalFile.empty())
190 PPOpts.Includes.insert(PPOpts.Includes.begin(), OriginalFile);
191 PPOpts.ImplicitPCHInclude.clear();
192 }
193 std::string define = std::string(getARCMTMacroName());
194 define += '=';
195 CInvok->getPreprocessorOpts().addMacroDef(define);
196 CInvok->getLangOpts()->ObjCAutoRefCount = true;
197 CInvok->getLangOpts()->setGC(LangOptions::NonGC);
198 CInvok->getDiagnosticOpts().ErrorLimit = 0;
199 CInvok->getDiagnosticOpts().PedanticErrors = 0;
200
201 // Ignore -Werror flags when migrating.
202 std::vector<std::string> WarnOpts;
203 for (std::vector<std::string>::iterator
204 I = CInvok->getDiagnosticOpts().Warnings.begin(),
205 E = CInvok->getDiagnosticOpts().Warnings.end(); I != E; ++I) {
206 if (!StringRef(*I).startswith("error"))
207 WarnOpts.push_back(*I);
208 }
209 WarnOpts.push_back("error=arc-unsafe-retained-assign");
210 CInvok->getDiagnosticOpts().Warnings = std::move(WarnOpts);
211
212 CInvok->getLangOpts()->ObjCWeakRuntime = HasARCRuntime(origCI);
213 CInvok->getLangOpts()->ObjCWeak = CInvok->getLangOpts()->ObjCWeakRuntime;
214
215 return CInvok.release();
216 }
217
218 static void emitPremigrationErrors(const CapturedDiagList &arcDiags,
219 DiagnosticOptions *diagOpts,
220 Preprocessor &PP) {
221 TextDiagnosticPrinter printer(llvm::errs(), diagOpts);
222 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
223 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
224 new DiagnosticsEngine(DiagID, diagOpts, &printer,
225 /*ShouldOwnClient=*/false));
226 Diags->setSourceManager(&PP.getSourceManager());
227
228 printer.BeginSourceFile(PP.getLangOpts(), &PP);
229 arcDiags.reportDiagnostics(*Diags);
230 printer.EndSourceFile();
231 }
232
233 //===----------------------------------------------------------------------===//
234 // checkForManualIssues.
235 //===----------------------------------------------------------------------===//
236
237 bool arcmt::checkForManualIssues(
238 CompilerInvocation &origCI, const FrontendInputFile &Input,
239 std::shared_ptr<PCHContainerOperations> PCHContainerOps,
240 DiagnosticConsumer *DiagClient, bool emitPremigrationARCErrors,
241 StringRef plistOut) {
242 if (!origCI.getLangOpts()->ObjC)
243 return false;
244
245 LangOptions::GCMode OrigGCMode = origCI.getLangOpts()->getGC();
246 bool NoNSAllocReallocError = origCI.getMigratorOpts().NoNSAllocReallocError;
247 bool NoFinalizeRemoval = origCI.getMigratorOpts().NoFinalizeRemoval;
248
249 std::vector<TransformFn> transforms = arcmt::getAllTransformations(OrigGCMode,
250 NoFinalizeRemoval);
251 assert(!transforms.empty());
252
253 std::unique_ptr<CompilerInvocation> CInvok;
254 CInvok.reset(
255 createInvocationForMigration(origCI, PCHContainerOps->getRawReader()));
256 CInvok->getFrontendOpts().Inputs.clear();
257 CInvok->getFrontendOpts().Inputs.push_back(Input);
258
259 CapturedDiagList capturedDiags;
260
261 assert(DiagClient);
262 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
263 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
264 new DiagnosticsEngine(DiagID, &origCI.getDiagnosticOpts(),
265 DiagClient, /*ShouldOwnClient=*/false));
266
267 // Filter of all diagnostics.
268 CaptureDiagnosticConsumer errRec(*Diags, *DiagClient, capturedDiags);
269 Diags->setClient(&errRec, /*ShouldOwnClient=*/false);
270
271 std::unique_ptr<ASTUnit> Unit(ASTUnit::LoadFromCompilerInvocationAction(
272 std::move(CInvok), PCHContainerOps, Diags));
273 if (!Unit) {
274 errRec.FinishCapture();
275 return true;
276 }
277
278 // Don't filter diagnostics anymore.
279 Diags->setClient(DiagClient, /*ShouldOwnClient=*/false);
280
281 ASTContext &Ctx = Unit->getASTContext();
282
283 if (Diags->hasFatalErrorOccurred()) {
284 Diags->Reset();
285 DiagClient->BeginSourceFile(Ctx.getLangOpts(), &Unit->getPreprocessor());
286 capturedDiags.reportDiagnostics(*Diags);
287 DiagClient->EndSourceFile();
288 errRec.FinishCapture();
289 return true;
290 }
291
292 if (emitPremigrationARCErrors)
293 emitPremigrationErrors(capturedDiags, &origCI.getDiagnosticOpts(),
294 Unit->getPreprocessor());
295 if (!plistOut.empty()) {
296 SmallVector<StoredDiagnostic, 8> arcDiags;
297 for (CapturedDiagList::iterator
298 I = capturedDiags.begin(), E = capturedDiags.end(); I != E; ++I)
299 arcDiags.push_back(*I);
300 writeARCDiagsToPlist(std::string(plistOut), arcDiags,
301 Ctx.getSourceManager(), Ctx.getLangOpts());
302 }
303
304 // After parsing of source files ended, we want to reuse the
305 // diagnostics objects to emit further diagnostics.
306 // We call BeginSourceFile because DiagnosticConsumer requires that
307 // diagnostics with source range information are emitted only in between
308 // BeginSourceFile() and EndSourceFile().
309 DiagClient->BeginSourceFile(Ctx.getLangOpts(), &Unit->getPreprocessor());
310
311 // No macros will be added since we are just checking and we won't modify
312 // source code.
313 std::vector<SourceLocation> ARCMTMacroLocs;
314
315 TransformActions testAct(*Diags, capturedDiags, Ctx, Unit->getPreprocessor());
316 MigrationPass pass(Ctx, OrigGCMode, Unit->getSema(), testAct, capturedDiags,
317 ARCMTMacroLocs);
318 pass.setNoFinalizeRemoval(NoFinalizeRemoval);
319 if (!NoNSAllocReallocError)
320 Diags->setSeverity(diag::warn_arcmt_nsalloc_realloc, diag::Severity::Error,
321 SourceLocation());
322
323 for (unsigned i=0, e = transforms.size(); i != e; ++i)
324 transforms[i](pass);
325
326 capturedDiags.reportDiagnostics(*Diags);
327
328 DiagClient->EndSourceFile();
329 errRec.FinishCapture();
330
331 return capturedDiags.hasErrors() || testAct.hasReportedErrors();
332 }
333
334 //===----------------------------------------------------------------------===//
335 // applyTransformations.
336 //===----------------------------------------------------------------------===//
337
338 static bool
339 applyTransforms(CompilerInvocation &origCI, const FrontendInputFile &Input,
340 std::shared_ptr<PCHContainerOperations> PCHContainerOps,
341 DiagnosticConsumer *DiagClient, StringRef outputDir,
342 bool emitPremigrationARCErrors, StringRef plistOut) {
343 if (!origCI.getLangOpts()->ObjC)
344 return false;
345
346 LangOptions::GCMode OrigGCMode = origCI.getLangOpts()->getGC();
347
348 // Make sure checking is successful first.
349 CompilerInvocation CInvokForCheck(origCI);
350 if (arcmt::checkForManualIssues(CInvokForCheck, Input, PCHContainerOps,
351 DiagClient, emitPremigrationARCErrors,
352 plistOut))
353 return true;
354
355 CompilerInvocation CInvok(origCI);
356 CInvok.getFrontendOpts().Inputs.clear();
357 CInvok.getFrontendOpts().Inputs.push_back(Input);
358
359 MigrationProcess migration(CInvok, PCHContainerOps, DiagClient, outputDir);
360 bool NoFinalizeRemoval = origCI.getMigratorOpts().NoFinalizeRemoval;
361
362 std::vector<TransformFn> transforms = arcmt::getAllTransformations(OrigGCMode,
363 NoFinalizeRemoval);
364 assert(!transforms.empty());
365
366 for (unsigned i=0, e = transforms.size(); i != e; ++i) {
367 bool err = migration.applyTransform(transforms[i]);
368 if (err) return true;
369 }
370
371 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
372 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
373 new DiagnosticsEngine(DiagID, &origCI.getDiagnosticOpts(),
374 DiagClient, /*ShouldOwnClient=*/false));
375
376 if (outputDir.empty()) {
377 origCI.getLangOpts()->ObjCAutoRefCount = true;
378 return migration.getRemapper().overwriteOriginal(*Diags);
379 } else {
380 return migration.getRemapper().flushToDisk(outputDir, *Diags);
381 }
382 }
383
384 bool arcmt::applyTransformations(
385 CompilerInvocation &origCI, const FrontendInputFile &Input,
386 std::shared_ptr<PCHContainerOperations> PCHContainerOps,
387 DiagnosticConsumer *DiagClient) {
388 return applyTransforms(origCI, Input, PCHContainerOps, DiagClient,
389 StringRef(), false, StringRef());
390 }
391
392 bool arcmt::migrateWithTemporaryFiles(
393 CompilerInvocation &origCI, const FrontendInputFile &Input,
394 std::shared_ptr<PCHContainerOperations> PCHContainerOps,
395 DiagnosticConsumer *DiagClient, StringRef outputDir,
396 bool emitPremigrationARCErrors, StringRef plistOut) {
397 assert(!outputDir.empty() && "Expected output directory path");
398 return applyTransforms(origCI, Input, PCHContainerOps, DiagClient, outputDir,
399 emitPremigrationARCErrors, plistOut);
400 }
401
402 bool arcmt::getFileRemappings(std::vector<std::pair<std::string,std::string> > &
403 remap,
404 StringRef outputDir,
405 DiagnosticConsumer *DiagClient) {
406 assert(!outputDir.empty());
407
408 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
409 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
410 new DiagnosticsEngine(DiagID, new DiagnosticOptions,
411 DiagClient, /*ShouldOwnClient=*/false));
412
413 FileRemapper remapper;
414 bool err = remapper.initFromDisk(outputDir, *Diags,
415 /*ignoreIfFilesChanged=*/true);
416 if (err)
417 return true;
418
419 PreprocessorOptions PPOpts;
420 remapper.applyMappings(PPOpts);
421 remap = PPOpts.RemappedFiles;
422
423 return false;
424 }
425
426
427 //===----------------------------------------------------------------------===//
428 // CollectTransformActions.
429 //===----------------------------------------------------------------------===//
430
431 namespace {
432
433 class ARCMTMacroTrackerPPCallbacks : public PPCallbacks {
434 std::vector<SourceLocation> &ARCMTMacroLocs;
435
436 public:
437 ARCMTMacroTrackerPPCallbacks(std::vector<SourceLocation> &ARCMTMacroLocs)
438 : ARCMTMacroLocs(ARCMTMacroLocs) { }
439
440 void MacroExpands(const Token &MacroNameTok, const MacroDefinition &MD,
441 SourceRange Range, const MacroArgs *Args) override {
442 if (MacroNameTok.getIdentifierInfo()->getName() == getARCMTMacroName())
443 ARCMTMacroLocs.push_back(MacroNameTok.getLocation());
444 }
445 };
446
447 class ARCMTMacroTrackerAction : public ASTFrontendAction {
448 std::vector<SourceLocation> &ARCMTMacroLocs;
449
450 public:
451 ARCMTMacroTrackerAction(std::vector<SourceLocation> &ARCMTMacroLocs)
452 : ARCMTMacroLocs(ARCMTMacroLocs) { }
453
454 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
455 StringRef InFile) override {
456 CI.getPreprocessor().addPPCallbacks(
457 std::make_unique<ARCMTMacroTrackerPPCallbacks>(ARCMTMacroLocs));
458 return std::make_unique<ASTConsumer>();
459 }
460 };
461
462 class RewritesApplicator : public TransformActions::RewriteReceiver {
463 Rewriter &rewriter;
464 MigrationProcess::RewriteListener *Listener;
465
466 public:
467 RewritesApplicator(Rewriter &rewriter, ASTContext &ctx,
468 MigrationProcess::RewriteListener *listener)
469 : rewriter(rewriter), Listener(listener) {
470 if (Listener)
471 Listener->start(ctx);
472 }
473 ~RewritesApplicator() override {
474 if (Listener)
475 Listener->finish();
476 }
477
478 void insert(SourceLocation loc, StringRef text) override {
479 bool err = rewriter.InsertText(loc, text, /*InsertAfter=*/true,
480 /*indentNewLines=*/true);
481 if (!err && Listener)
482 Listener->insert(loc, text);
483 }
484
485 void remove(CharSourceRange range) override {
486 Rewriter::RewriteOptions removeOpts;
487 removeOpts.IncludeInsertsAtBeginOfRange = false;
488 removeOpts.IncludeInsertsAtEndOfRange = false;
489 removeOpts.RemoveLineIfEmpty = true;
490
491 bool err = rewriter.RemoveText(range, removeOpts);
492 if (!err && Listener)
493 Listener->remove(range);
494 }
495
496 void increaseIndentation(CharSourceRange range,
497 SourceLocation parentIndent) override {
498 rewriter.IncreaseIndentation(range, parentIndent);
499 }
500 };
501
502 } // end anonymous namespace.
503
504 /// Anchor for VTable.
505 MigrationProcess::RewriteListener::~RewriteListener() { }
506
507 MigrationProcess::MigrationProcess(
508 const CompilerInvocation &CI,
509 std::shared_ptr<PCHContainerOperations> PCHContainerOps,
510 DiagnosticConsumer *diagClient, StringRef outputDir)
511 : OrigCI(CI), PCHContainerOps(std::move(PCHContainerOps)),
512 DiagClient(diagClient), HadARCErrors(false) {
513 if (!outputDir.empty()) {
514 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
515 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
516 new DiagnosticsEngine(DiagID, &CI.getDiagnosticOpts(),
517 DiagClient, /*ShouldOwnClient=*/false));
518 Remapper.initFromDisk(outputDir, *Diags, /*ignoreIfFilesChanged=*/true);
519 }
520 }
521
522 bool MigrationProcess::applyTransform(TransformFn trans,
523 RewriteListener *listener) {
524 std::unique_ptr<CompilerInvocation> CInvok;
525 CInvok.reset(
526 createInvocationForMigration(OrigCI, PCHContainerOps->getRawReader()));
527 CInvok->getDiagnosticOpts().IgnoreWarnings = true;
528
529 Remapper.applyMappings(CInvok->getPreprocessorOpts());
530
531 CapturedDiagList capturedDiags;
532 std::vector<SourceLocation> ARCMTMacroLocs;
533
534 assert(DiagClient);
535 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
536 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
537 new DiagnosticsEngine(DiagID, new DiagnosticOptions,
538 DiagClient, /*ShouldOwnClient=*/false));
539
540 // Filter of all diagnostics.
541 CaptureDiagnosticConsumer errRec(*Diags, *DiagClient, capturedDiags);
542 Diags->setClient(&errRec, /*ShouldOwnClient=*/false);
543
544 std::unique_ptr<ARCMTMacroTrackerAction> ASTAction;
545 ASTAction.reset(new ARCMTMacroTrackerAction(ARCMTMacroLocs));
546
547 std::unique_ptr<ASTUnit> Unit(ASTUnit::LoadFromCompilerInvocationAction(
548 std::move(CInvok), PCHContainerOps, Diags, ASTAction.get()));
549 if (!Unit) {
550 errRec.FinishCapture();
551 return true;
552 }
553 Unit->setOwnsRemappedFileBuffers(false); // FileRemapper manages that.
554
555 HadARCErrors = HadARCErrors || capturedDiags.hasErrors();
556
557 // Don't filter diagnostics anymore.
558 Diags->setClient(DiagClient, /*ShouldOwnClient=*/false);
559
560 ASTContext &Ctx = Unit->getASTContext();
561
562 if (Diags->hasFatalErrorOccurred()) {
563 Diags->Reset();
564 DiagClient->BeginSourceFile(Ctx.getLangOpts(), &Unit->getPreprocessor());
565 capturedDiags.reportDiagnostics(*Diags);
566 DiagClient->EndSourceFile();
567 errRec.FinishCapture();
568 return true;
569 }
570
571 // After parsing of source files ended, we want to reuse the
572 // diagnostics objects to emit further diagnostics.
573 // We call BeginSourceFile because DiagnosticConsumer requires that
574 // diagnostics with source range information are emitted only in between
575 // BeginSourceFile() and EndSourceFile().
576 DiagClient->BeginSourceFile(Ctx.getLangOpts(), &Unit->getPreprocessor());
577
578 Rewriter rewriter(Ctx.getSourceManager(), Ctx.getLangOpts());
579 TransformActions TA(*Diags, capturedDiags, Ctx, Unit->getPreprocessor());
580 MigrationPass pass(Ctx, OrigCI.getLangOpts()->getGC(),
581 Unit->getSema(), TA, capturedDiags, ARCMTMacroLocs);
582
583 trans(pass);
584
585 {
586 RewritesApplicator applicator(rewriter, Ctx, listener);
587 TA.applyRewrites(applicator);
588 }
589
590 DiagClient->EndSourceFile();
591 errRec.FinishCapture();
592
593 if (DiagClient->getNumErrors())
594 return true;
595
596 for (Rewriter::buffer_iterator
597 I = rewriter.buffer_begin(), E = rewriter.buffer_end(); I != E; ++I) {
598 FileID FID = I->first;
599 RewriteBuffer &buf = I->second;
600 const FileEntry *file = Ctx.getSourceManager().getFileEntryForID(FID);
601 assert(file);
602 std::string newFname = std::string(file->getName());
603 newFname += "-trans";
604 SmallString<512> newText;
605 llvm::raw_svector_ostream vecOS(newText);
606 buf.write(vecOS);
607 std::unique_ptr<llvm::MemoryBuffer> memBuf(
608 llvm::MemoryBuffer::getMemBufferCopy(
609 StringRef(newText.data(), newText.size()), newFname));
610 SmallString<64> filePath(file->getName());
611 Unit->getFileManager().FixupRelativePath(filePath);
612 Remapper.remap(filePath.str(), std::move(memBuf));
613 }
614
615 return false;
616 }