Coverage Report

Created: 2021-01-26 06:56

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/Frontend/FrontendAction.cpp
Line
Count
Source (jump to first uncovered line)
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/Basic/Builtins.h"
14
#include "clang/Basic/LangStandard.h"
15
#include "clang/Frontend/ASTUnit.h"
16
#include "clang/Frontend/CompilerInstance.h"
17
#include "clang/Frontend/FrontendDiagnostic.h"
18
#include "clang/Frontend/FrontendPluginRegistry.h"
19
#include "clang/Frontend/LayoutOverrideSource.h"
20
#include "clang/Frontend/MultiplexConsumer.h"
21
#include "clang/Frontend/Utils.h"
22
#include "clang/Lex/HeaderSearch.h"
23
#include "clang/Lex/LiteralSupport.h"
24
#include "clang/Lex/Preprocessor.h"
25
#include "clang/Lex/PreprocessorOptions.h"
26
#include "clang/Parse/ParseAST.h"
27
#include "clang/Serialization/ASTDeserializationListener.h"
28
#include "clang/Serialization/ASTReader.h"
29
#include "clang/Serialization/GlobalModuleIndex.h"
30
#include "llvm/Support/BuryPointer.h"
31
#include "llvm/Support/ErrorHandling.h"
32
#include "llvm/Support/FileSystem.h"
33
#include "llvm/Support/Path.h"
34
#include "llvm/Support/Timer.h"
35
#include "llvm/Support/raw_ostream.h"
36
#include <system_error>
37
using namespace clang;
38
39
LLVM_INSTANTIATE_REGISTRY(FrontendPluginRegistry)
40
41
namespace {
42
43
class DelegatingDeserializationListener : public ASTDeserializationListener {
44
  ASTDeserializationListener *Previous;
45
  bool DeletePrevious;
46
47
public:
48
  explicit DelegatingDeserializationListener(
49
      ASTDeserializationListener *Previous, bool DeletePrevious)
50
106
      : Previous(Previous), DeletePrevious(DeletePrevious) {}
51
104
  ~DelegatingDeserializationListener() override {
52
104
    if (DeletePrevious)
53
0
      delete Previous;
54
104
  }
55
56
212
  void ReaderInitialized(ASTReader *Reader) override {
57
212
    if (Previous)
58
26
      Previous->ReaderInitialized(Reader);
59
212
  }
60
  void IdentifierRead(serialization::IdentID ID,
61
7.27k
                      IdentifierInfo *II) override {
62
7.27k
    if (Previous)
63
248
      Previous->IdentifierRead(ID, II);
64
7.27k
  }
65
1.13k
  void TypeRead(serialization::TypeIdx Idx, QualType T) override {
66
1.13k
    if (Previous)
67
28
      Previous->TypeRead(Idx, T);
68
1.13k
  }
69
1.30k
  void DeclRead(serialization::DeclID ID, const Decl *D) override {
70
1.30k
    if (Previous)
71
15
      Previous->DeclRead(ID, D);
72
1.30k
  }
73
0
  void SelectorRead(serialization::SelectorID ID, Selector Sel) override {
74
0
    if (Previous)
75
0
      Previous->SelectorRead(ID, Sel);
76
0
  }
77
  void MacroDefinitionRead(serialization::PreprocessedEntityID PPID,
78
39
                           MacroDefinitionRecord *MD) override {
79
39
    if (Previous)
80
12
      Previous->MacroDefinitionRead(PPID, MD);
81
39
  }
82
};
83
84
/// Dumps deserialized declarations.
85
class DeserializedDeclsDumper : public DelegatingDeserializationListener {
86
public:
87
  explicit DeserializedDeclsDumper(ASTDeserializationListener *Previous,
88
                                   bool DeletePrevious)
89
0
      : DelegatingDeserializationListener(Previous, DeletePrevious) {}
90
91
0
  void DeclRead(serialization::DeclID ID, const Decl *D) override {
92
0
    llvm::outs() << "PCH DECL: " << D->getDeclKindName();
93
0
    if (const NamedDecl *ND = dyn_cast<NamedDecl>(D)) {
94
0
      llvm::outs() << " - ";
95
0
      ND->printQualifiedName(llvm::outs());
96
0
    }
97
0
    llvm::outs() << "\n";
98
99
0
    DelegatingDeserializationListener::DeclRead(ID, D);
100
0
  }
101
};
102
103
/// Checks deserialized declarations and emits error if a name
104
/// matches one given in command-line using -error-on-deserialized-decl.
105
class DeserializedDeclsChecker : public DelegatingDeserializationListener {
106
  ASTContext &Ctx;
107
  std::set<std::string> NamesToCheck;
108
109
public:
110
  DeserializedDeclsChecker(ASTContext &Ctx,
111
                           const std::set<std::string> &NamesToCheck,
112
                           ASTDeserializationListener *Previous,
113
                           bool DeletePrevious)
114
      : DelegatingDeserializationListener(Previous, DeletePrevious), Ctx(Ctx),
115
106
        NamesToCheck(NamesToCheck) {}
116
117
1.30k
  void DeclRead(serialization::DeclID ID, const Decl *D) override {
118
1.30k
    if (const NamedDecl *ND = dyn_cast<NamedDecl>(D))
119
1.18k
      if (NamesToCheck.find(ND->getNameAsString()) != NamesToCheck.end()) {
120
2
        unsigned DiagID
121
2
          = Ctx.getDiagnostics().getCustomDiagID(DiagnosticsEngine::Error,
122
2
                                                 "%0 was deserialized");
123
2
        Ctx.getDiagnostics().Report(Ctx.getFullLoc(D->getLocation()), DiagID)
124
2
            << ND;
125
2
      }
126
127
1.30k
    DelegatingDeserializationListener::DeclRead(ID, D);
128
1.30k
  }
129
};
130
131
} // end anonymous namespace
132
133
67.9k
FrontendAction::FrontendAction() : Instance(nullptr) {}
134
135
62.5k
FrontendAction::~FrontendAction() {}
136
137
void FrontendAction::setCurrentInput(const FrontendInputFile &CurrentInput,
138
134k
                                     std::unique_ptr<ASTUnit> AST) {
139
134k
  this->CurrentInput = CurrentInput;
140
134k
  CurrentASTUnit = std::move(AST);
141
134k
}
142
143
19
Module *FrontendAction::getCurrentModule() const {
144
19
  CompilerInstance &CI = getCompilerInstance();
145
19
  return CI.getPreprocessor().getHeaderSearchInfo().lookupModule(
146
19
      CI.getLangOpts().CurrentModule, /*AllowSearch*/false);
147
19
}
148
149
std::unique_ptr<ASTConsumer>
150
FrontendAction::CreateWrappedASTConsumer(CompilerInstance &CI,
151
65.5k
                                         StringRef InFile) {
152
65.5k
  std::unique_ptr<ASTConsumer> Consumer = CreateASTConsumer(CI, InFile);
153
65.5k
  if (!Consumer)
154
3
    return nullptr;
155
156
  // Validate -add-plugin args.
157
65.5k
  bool FoundAllPlugins = true;
158
1
  for (const std::string &Arg : CI.getFrontendOpts().AddPluginActions) {
159
1
    bool Found = false;
160
1
    for (const FrontendPluginRegistry::entry &Plugin :
161
0
         FrontendPluginRegistry::entries()) {
162
0
      if (Plugin.getName() == Arg)
163
0
        Found = true;
164
0
    }
165
1
    if (!Found) {
166
1
      CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) << Arg;
167
1
      FoundAllPlugins = false;
168
1
    }
169
1
  }
170
65.5k
  if (!FoundAllPlugins)
171
1
    return nullptr;
172
173
  // If there are no registered plugins we don't need to wrap the consumer
174
65.4k
  if (FrontendPluginRegistry::begin() == FrontendPluginRegistry::end())
175
65.4k
    return Consumer;
176
177
  // If this is a code completion run, avoid invoking the plugin consumers
178
0
  if (CI.hasCodeCompletionConsumer())
179
0
    return Consumer;
180
181
  // Collect the list of plugins that go before the main action (in Consumers)
182
  // or after it (in AfterConsumers)
183
0
  std::vector<std::unique_ptr<ASTConsumer>> Consumers;
184
0
  std::vector<std::unique_ptr<ASTConsumer>> AfterConsumers;
185
0
  for (const FrontendPluginRegistry::entry &Plugin :
186
0
       FrontendPluginRegistry::entries()) {
187
0
    std::unique_ptr<PluginASTAction> P = Plugin.instantiate();
188
0
    PluginASTAction::ActionType ActionType = P->getActionType();
189
0
    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
0
      if (llvm::any_of(CI.getFrontendOpts().AddPluginActions,
193
0
                       [&](const std::string &PluginAction) {
194
0
                         return PluginAction == Plugin.getName();
195
0
                       }))
196
0
        ActionType = PluginASTAction::AddAfterMainAction;
197
0
    }
198
0
    if ((ActionType == PluginASTAction::AddBeforeMainAction ||
199
0
         ActionType == PluginASTAction::AddAfterMainAction) &&
200
0
        P->ParseArgs(
201
0
            CI,
202
0
            CI.getFrontendOpts().PluginArgs[std::string(Plugin.getName())])) {
203
0
      std::unique_ptr<ASTConsumer> PluginConsumer = P->CreateASTConsumer(CI, InFile);
204
0
      if (ActionType == PluginASTAction::AddBeforeMainAction) {
205
0
        Consumers.push_back(std::move(PluginConsumer));
206
0
      } else {
207
0
        AfterConsumers.push_back(std::move(PluginConsumer));
208
0
      }
209
0
    }
210
0
  }
211
212
  // Add to Consumers the main consumer, then all the plugins that go after it
213
0
  Consumers.push_back(std::move(Consumer));
214
0
  for (auto &C : AfterConsumers) {
215
0
    Consumers.push_back(std::move(C));
216
0
  }
217
218
0
  return std::make_unique<MultiplexConsumer>(std::move(Consumers));
219
0
}
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
179
                                           bool IsModuleMap = false) {
233
179
  auto &SourceMgr = CI.getSourceManager();
234
179
  auto MainFileID = SourceMgr.getMainFileID();
235
236
179
  auto MainFileBuf = SourceMgr.getBufferOrNone(MainFileID);
237
179
  if (!MainFileBuf)
238
0
    return SourceLocation();
239
240
179
  std::unique_ptr<Lexer> RawLexer(
241
179
      new Lexer(MainFileID, *MainFileBuf, SourceMgr, CI.getLangOpts()));
242
243
  // If the first line has the syntax of
244
  //
245
  // # NUM "FILENAME"
246
  //
247
  // we use FILENAME as the input file name.
248
179
  Token T;
249
179
  if (RawLexer->LexFromRawLexer(T) || 
T.getKind() != tok::hash177
)
250
139
    return SourceLocation();
251
40
  if (RawLexer->LexFromRawLexer(T) || T.isAtStartOfLine() ||
252
40
      T.getKind() != tok::numeric_constant)
253
4
    return SourceLocation();
254
255
36
  unsigned LineNo;
256
36
  SourceLocation LineNoLoc = T.getLocation();
257
36
  if (IsModuleMap) {
258
16
    llvm::SmallString<16> Buffer;
259
16
    if (Lexer::getSpelling(LineNoLoc, Buffer, SourceMgr, CI.getLangOpts())
260
16
            .getAsInteger(10, LineNo))
261
0
      return SourceLocation();
262
36
  }
263
264
36
  RawLexer->LexFromRawLexer(T);
265
36
  if (T.isAtStartOfLine() || T.getKind() != tok::string_literal)
266
0
    return SourceLocation();
267
268
36
  StringLiteralParser Literal(T, CI.getPreprocessor());
269
36
  if (Literal.hadError)
270
0
    return SourceLocation();
271
36
  RawLexer->LexFromRawLexer(T);
272
36
  if (T.isNot(tok::eof) && !T.isAtStartOfLine())
273
0
    return SourceLocation();
274
36
  InputFile = Literal.GetString().str();
275
276
36
  if (IsModuleMap)
277
16
    CI.getSourceManager().AddLineNote(
278
16
        LineNoLoc, LineNo, SourceMgr.getLineTableFilenameID(InputFile), false,
279
16
        false, SrcMgr::C_User_ModuleMap);
280
281
36
  return T.getLocation();
282
36
}
283
284
static SmallVectorImpl<char> &
285
59.0k
operator+=(SmallVectorImpl<char> &Includes, StringRef RHS) {
286
59.0k
  Includes.append(RHS.begin(), RHS.end());
287
59.0k
  return Includes;
288
59.0k
}
289
290
static void addHeaderInclude(StringRef HeaderName,
291
                             SmallVectorImpl<char> &Includes,
292
                             const LangOptions &LangOpts,
293
15.6k
                             bool IsExternC) {
294
15.6k
  if (IsExternC && 
LangOpts.CPlusPlus11.9k
)
295
6.09k
    Includes += "extern \"C\" {\n";
296
15.6k
  if (LangOpts.ObjC)
297
5.95k
    Includes += "#import \"";
298
9.66k
  else
299
9.66k
    Includes += "#include \"";
300
301
15.6k
  Includes += HeaderName;
302
303
15.6k
  Includes += "\"\n";
304
15.6k
  if (IsExternC && 
LangOpts.CPlusPlus11.9k
)
305
6.09k
    Includes += "}\n";
306
15.6k
}
307
308
/// Collect the set of header includes needed to construct the given
309
/// module and update the TopHeaders file set of the module.
310
///
311
/// \param Module The module we're collecting includes from.
312
///
313
/// \param Includes Will be augmented with the set of \#includes or \#imports
314
/// needed to load all of the named headers.
315
static std::error_code collectModuleHeaderIncludes(
316
    const LangOptions &LangOpts, FileManager &FileMgr, DiagnosticsEngine &Diag,
317
13.0k
    ModuleMap &ModMap, clang::Module *Module, SmallVectorImpl<char> &Includes) {
318
  // Don't collect any headers for unavailable modules.
319
13.0k
  if (!Module->isAvailable())
320
408
    return std::error_code();
321
322
  // Resolve all lazy header directives to header files.
323
12.6k
  ModMap.resolveHeaderDirectives(Module);
324
325
  // If any headers are missing, we can't build this module. In most cases,
326
  // diagnostics for this should have already been produced; we only get here
327
  // if explicit stat information was provided.
328
  // FIXME: If the name resolves to a file with different stat information,
329
  // produce a better diagnostic.
330
12.6k
  if (!Module->MissingHeaders.empty()) {
331
1
    auto &MissingHeader = Module->MissingHeaders.front();
332
1
    Diag.Report(MissingHeader.FileNameLoc, diag::err_module_header_missing)
333
1
      << MissingHeader.IsUmbrella << MissingHeader.FileName;
334
1
    return std::error_code();
335
1
  }
336
337
  // Add includes for each of these headers.
338
25.2k
  
for (auto HK : {Module::HK_Normal, Module::HK_Private})12.6k
{
339
11.8k
    for (Module::Header &H : Module->Headers[HK]) {
340
11.8k
      Module->addTopHeader(H.Entry);
341
      // Use the path as specified in the module map file. We'll look for this
342
      // file relative to the module build directory (the directory containing
343
      // the module map file) so this will find the same file that we found
344
      // while parsing the module map.
345
11.8k
      addHeaderInclude(H.NameAsWritten, Includes, LangOpts, Module->IsExternC);
346
11.8k
    }
347
25.2k
  }
348
  // Note that Module->PrivateHeaders will not be a TopHeader.
349
350
12.6k
  if (Module::Header UmbrellaHeader = Module->getUmbrellaHeader()) {
351
526
    Module->addTopHeader(UmbrellaHeader.Entry);
352
526
    if (Module->Parent)
353
      // Include the umbrella header for submodules.
354
247
      addHeaderInclude(UmbrellaHeader.NameAsWritten, Includes, LangOpts,
355
247
                       Module->IsExternC);
356
12.1k
  } else if (Module::DirectoryName UmbrellaDir = Module->getUmbrellaDir()) {
357
    // Add all of the headers we find in this subdirectory.
358
201
    std::error_code EC;
359
201
    SmallString<128> DirNative;
360
201
    llvm::sys::path::native(UmbrellaDir.Entry->getName(), DirNative);
361
362
201
    llvm::vfs::FileSystem &FS = FileMgr.getVirtualFileSystem();
363
201
    SmallVector<std::pair<std::string, const FileEntry *>, 8> Headers;
364
201
    for (llvm::vfs::recursive_directory_iterator Dir(FS, DirNative, EC), End;
365
3.53k
         Dir != End && 
!EC3.33k
;
Dir.increment(EC)3.33k
) {
366
      // Check whether this entry has an extension typically associated with
367
      // headers.
368
3.33k
      if (!llvm::StringSwitch<bool>(llvm::sys::path::extension(Dir->path()))
369
3.33k
               .Cases(".h", ".H", ".hh", ".hpp", true)
370
3.33k
               .Default(false))
371
40
        continue;
372
373
3.29k
      auto Header = FileMgr.getFile(Dir->path());
374
      // FIXME: This shouldn't happen unless there is a file system race. Is
375
      // that worth diagnosing?
376
3.29k
      if (!Header)
377
1
        continue;
378
379
      // If this header is marked 'unavailable' in this module, don't include
380
      // it.
381
3.28k
      if (ModMap.isHeaderUnavailableInModule(*Header, Module))
382
8
        continue;
383
384
      // Compute the relative path from the directory to this file.
385
3.28k
      SmallVector<StringRef, 16> Components;
386
3.28k
      auto PathIt = llvm::sys::path::rbegin(Dir->path());
387
6.56k
      for (int I = 0; I != Dir.level() + 1; 
++I, ++PathIt3.28k
)
388
3.28k
        Components.push_back(*PathIt);
389
3.28k
      SmallString<128> RelativeHeader(UmbrellaDir.NameAsWritten);
390
6.56k
      for (auto It = Components.rbegin(), End = Components.rend(); It != End;
391
3.28k
           ++It)
392
3.28k
        llvm::sys::path::append(RelativeHeader, *It);
393
394
3.28k
      std::string RelName = RelativeHeader.c_str();
395
3.28k
      Headers.push_back(std::make_pair(RelName, *Header));
396
3.28k
    }
397
398
201
    if (EC)
399
0
      return EC;
400
401
    // Sort header paths and make the header inclusion order deterministic
402
    // across different OSs and filesystems.
403
201
    llvm::sort(Headers.begin(), Headers.end(), [](
404
201
      const std::pair<std::string, const FileEntry *> &LHS,
405
16.4k
      const std::pair<std::string, const FileEntry *> &RHS) {
406
16.4k
        return LHS.first < RHS.first;
407
16.4k
    });
408
3.28k
    for (auto &H : Headers) {
409
      // Include this header as part of the umbrella directory.
410
3.28k
      Module->addTopHeader(H.second);
411
3.28k
      addHeaderInclude(H.first, Includes, LangOpts, Module->IsExternC);
412
3.28k
    }
413
201
  }
414
415
  // Recurse into submodules.
416
12.6k
  for (clang::Module::submodule_iterator Sub = Module->submodule_begin(),
417
12.6k
                                      SubEnd = Module->submodule_end();
418
23.9k
       Sub != SubEnd; 
++Sub11.2k
)
419
11.2k
    if (std::error_code Err = collectModuleHeaderIncludes(
420
0
            LangOpts, FileMgr, Diag, ModMap, *Sub, Includes))
421
0
      return Err;
422
423
12.6k
  return std::error_code();
424
12.6k
}
425
426
static bool loadModuleMapForModuleBuild(CompilerInstance &CI, bool IsSystem,
427
                                        bool IsPreprocessed,
428
                                        std::string &PresumedModuleMapFile,
429
1.87k
                                        unsigned &Offset) {
430
1.87k
  auto &SrcMgr = CI.getSourceManager();
431
1.87k
  HeaderSearch &HS = CI.getPreprocessor().getHeaderSearchInfo();
432
433
  // Map the current input to a file.
434
1.87k
  FileID ModuleMapID = SrcMgr.getMainFileID();
435
1.87k
  const FileEntry *ModuleMap = SrcMgr.getFileEntryForID(ModuleMapID);
436
437
  // If the module map is preprocessed, handle the initial line marker;
438
  // line directives are not part of the module map syntax in general.
439
1.87k
  Offset = 0;
440
1.87k
  if (IsPreprocessed) {
441
83
    SourceLocation EndOfLineMarker =
442
83
        ReadOriginalFileName(CI, PresumedModuleMapFile, /*IsModuleMap*/ true);
443
83
    if (EndOfLineMarker.isValid())
444
16
      Offset = CI.getSourceManager().getDecomposedLoc(EndOfLineMarker).second;
445
83
  }
446
447
  // Load the module map file.
448
1.87k
  if (HS.loadModuleMapFile(ModuleMap, IsSystem, ModuleMapID, &Offset,
449
1.87k
                           PresumedModuleMapFile))
450
0
    return true;
451
452
1.87k
  if (SrcMgr.getBufferOrFake(ModuleMapID).getBufferSize() == Offset)
453
1.78k
    Offset = 0;
454
455
1.87k
  return false;
456
1.87k
}
457
458
static Module *prepareToBuildModule(CompilerInstance &CI,
459
1.87k
                                    StringRef ModuleMapFilename) {
460
1.87k
  if (CI.getLangOpts().CurrentModule.empty()) {
461
0
    CI.getDiagnostics().Report(diag::err_missing_module_name);
462
463
    // FIXME: Eventually, we could consider asking whether there was just
464
    // a single module described in the module map, and use that as a
465
    // default. Then it would be fairly trivial to just "compile" a module
466
    // map with a single module (the common case).
467
0
    return nullptr;
468
0
  }
469
470
  // Dig out the module definition.
471
1.87k
  HeaderSearch &HS = CI.getPreprocessor().getHeaderSearchInfo();
472
1.87k
  Module *M = HS.lookupModule(CI.getLangOpts().CurrentModule,
473
1.87k
                              /*AllowSearch=*/false);
474
1.87k
  if (!M) {
475
2
    CI.getDiagnostics().Report(diag::err_missing_module)
476
2
      << CI.getLangOpts().CurrentModule << ModuleMapFilename;
477
478
2
    return nullptr;
479
2
  }
480
481
  // Check whether we can build this module at all.
482
1.86k
  if (Preprocessor::checkModuleIsAvailable(CI.getLangOpts(), CI.getTarget(),
483
1.86k
                                           CI.getDiagnostics(), M))
484
3
    return nullptr;
485
486
  // Inform the preprocessor that includes from within the input buffer should
487
  // be resolved relative to the build directory of the module map file.
488
1.86k
  CI.getPreprocessor().setMainFileDir(M->Directory);
489
490
  // If the module was inferred from a different module map (via an expanded
491
  // umbrella module definition), track that fact.
492
  // FIXME: It would be preferable to fill this in as part of processing
493
  // the module map, rather than adding it after the fact.
494
1.86k
  StringRef OriginalModuleMapName = CI.getFrontendOpts().OriginalModuleMap;
495
1.86k
  if (!OriginalModuleMapName.empty()) {
496
1.56k
    auto OriginalModuleMap =
497
1.56k
        CI.getFileManager().getFile(OriginalModuleMapName,
498
1.56k
                                    /*openFile*/ true);
499
1.56k
    if (!OriginalModuleMap) {
500
0
      CI.getDiagnostics().Report(diag::err_module_map_not_found)
501
0
        << OriginalModuleMapName;
502
0
      return nullptr;
503
0
    }
504
1.56k
    if (*OriginalModuleMap != CI.getSourceManager().getFileEntryForID(
505
107
                                 CI.getSourceManager().getMainFileID())) {
506
107
      M->IsInferred = true;
507
107
      CI.getPreprocessor().getHeaderSearchInfo().getModuleMap()
508
107
        .setInferredModuleAllowedBy(M, *OriginalModuleMap);
509
107
    }
510
1.56k
  }
511
512
  // If we're being run from the command-line, the module build stack will not
513
  // have been filled in yet, so complete it now in order to allow us to detect
514
  // module cycles.
515
1.86k
  SourceManager &SourceMgr = CI.getSourceManager();
516
1.86k
  if (SourceMgr.getModuleBuildStack().empty())
517
224
    SourceMgr.pushModuleBuildStack(CI.getLangOpts().CurrentModule,
518
224
                                   FullSourceLoc(SourceLocation(), SourceMgr));
519
1.86k
  return M;
520
1.86k
}
521
522
/// Compute the input buffer that should be used to build the specified module.
523
static std::unique_ptr<llvm::MemoryBuffer>
524
1.77k
getInputBufferForModule(CompilerInstance &CI, Module *M) {
525
1.77k
  FileManager &FileMgr = CI.getFileManager();
526
527
  // Collect the set of #includes we need to build the module.
528
1.77k
  SmallString<256> HeaderContents;
529
1.77k
  std::error_code Err = std::error_code();
530
1.77k
  if (Module::Header UmbrellaHeader = M->getUmbrellaHeader())
531
279
    addHeaderInclude(UmbrellaHeader.NameAsWritten, HeaderContents,
532
279
                     CI.getLangOpts(), M->IsExternC);
533
1.77k
  Err = collectModuleHeaderIncludes(
534
1.77k
      CI.getLangOpts(), FileMgr, CI.getDiagnostics(),
535
1.77k
      CI.getPreprocessor().getHeaderSearchInfo().getModuleMap(), M,
536
1.77k
      HeaderContents);
537
538
1.77k
  if (Err) {
539
0
    CI.getDiagnostics().Report(diag::err_module_cannot_create_includes)
540
0
      << M->getFullModuleName() << Err.message();
541
0
    return nullptr;
542
0
  }
543
544
1.77k
  return llvm::MemoryBuffer::getMemBufferCopy(
545
1.77k
      HeaderContents, Module::getModuleInputBufferName());
546
1.77k
}
547
548
bool FrontendAction::BeginSourceFile(CompilerInstance &CI,
549
67.8k
                                     const FrontendInputFile &RealInput) {
550
67.8k
  FrontendInputFile Input(RealInput);
551
67.8k
  assert(!Instance && "Already processing a source file!");
552
67.8k
  assert(!Input.isEmpty() && "Unexpected empty filename!");
553
67.8k
  setCurrentInput(Input);
554
67.8k
  setCompilerInstance(&CI);
555
556
67.8k
  bool HasBegunSourceFile = false;
557
67.8k
  bool ReplayASTFile = Input.getKind().getFormat() == InputKind::Precompiled &&
558
48
                       usesPreprocessorOnly();
559
67.8k
  if (!BeginInvocation(CI))
560
12
    goto failure;
561
562
  // If we're replaying the build of an AST file, import it and set up
563
  // the initial state from its build.
564
67.8k
  if (ReplayASTFile) {
565
15
    IntrusiveRefCntPtr<DiagnosticsEngine> Diags(&CI.getDiagnostics());
566
567
    // The AST unit populates its own diagnostics engine rather than ours.
568
15
    IntrusiveRefCntPtr<DiagnosticsEngine> ASTDiags(
569
15
        new DiagnosticsEngine(Diags->getDiagnosticIDs(),
570
15
                              &Diags->getDiagnosticOptions()));
571
15
    ASTDiags->setClient(Diags->getClient(), /*OwnsClient*/false);
572
573
    // FIXME: What if the input is a memory buffer?
574
15
    StringRef InputFile = Input.getFile();
575
576
15
    std::unique_ptr<ASTUnit> AST = ASTUnit::LoadFromASTFile(
577
15
        std::string(InputFile), CI.getPCHContainerReader(),
578
15
        ASTUnit::LoadPreprocessorOnly, ASTDiags, CI.getFileSystemOpts(),
579
15
        CI.getCodeGenOpts().DebugTypeExtRefs);
580
15
    if (!AST)
581
0
      goto failure;
582
583
    // Options relating to how we treat the input (but not what we do with it)
584
    // are inherited from the AST unit.
585
15
    CI.getHeaderSearchOpts() = AST->getHeaderSearchOpts();
586
15
    CI.getPreprocessorOpts() = AST->getPreprocessorOpts();
587
15
    CI.getLangOpts() = AST->getLangOpts();
588
589
    // Set the shared objects, these are reset when we finish processing the
590
    // file, otherwise the CompilerInstance will happily destroy them.
591
15
    CI.setFileManager(&AST->getFileManager());
592
15
    CI.createSourceManager(CI.getFileManager());
593
15
    CI.getSourceManager().initializeForReplay(AST->getSourceManager());
594
595
    // Preload all the module files loaded transitively by the AST unit. Also
596
    // load all module map files that were parsed as part of building the AST
597
    // unit.
598
15
    if (auto ASTReader = AST->getASTReader()) {
599
15
      auto &MM = ASTReader->getModuleManager();
600
15
      auto &PrimaryModule = MM.getPrimaryModule();
601
602
15
      for (serialization::ModuleFile &MF : MM)
603
25
        if (&MF != &PrimaryModule)
604
10
          CI.getFrontendOpts().ModuleFiles.push_back(MF.FileName);
605
606
15
      ASTReader->visitTopLevelModuleMaps(
607
14
          PrimaryModule, [&](const FileEntry *FE) {
608
14
            CI.getFrontendOpts().ModuleMapFiles.push_back(
609
14
                std::string(FE->getName()));
610
14
          });
611
15
    }
612
613
    // Set up the input file for replay purposes.
614
15
    auto Kind = AST->getInputKind();
615
15
    if (Kind.getFormat() == InputKind::ModuleMap) {
616
13
      Module *ASTModule =
617
13
          AST->getPreprocessor().getHeaderSearchInfo().lookupModule(
618
13
              AST->getLangOpts().CurrentModule, /*AllowSearch*/ false);
619
13
      assert(ASTModule && "module file does not define its own module");
620
13
      Input = FrontendInputFile(ASTModule->PresumedModuleMapFile, Kind);
621
2
    } else {
622
2
      auto &OldSM = AST->getSourceManager();
623
2
      FileID ID = OldSM.getMainFileID();
624
2
      if (auto *File = OldSM.getFileEntryForID(ID))
625
0
        Input = FrontendInputFile(File->getName(), Kind);
626
2
      else
627
2
        Input = FrontendInputFile(OldSM.getBufferOrFake(ID), Kind);
628
2
    }
629
15
    setCurrentInput(Input, std::move(AST));
630
15
  }
631
632
  // AST files follow a very different path, since they share objects via the
633
  // AST unit.
634
67.8k
  if (Input.getKind().getFormat() == InputKind::Precompiled) {
635
33
    assert(!usesPreprocessorOnly() && "this case was handled above");
636
33
    assert(hasASTFileSupport() &&
637
33
           "This action does not have AST file support!");
638
639
33
    IntrusiveRefCntPtr<DiagnosticsEngine> Diags(&CI.getDiagnostics());
640
641
    // FIXME: What if the input is a memory buffer?
642
33
    StringRef InputFile = Input.getFile();
643
644
33
    std::unique_ptr<ASTUnit> AST = ASTUnit::LoadFromASTFile(
645
33
        std::string(InputFile), CI.getPCHContainerReader(),
646
33
        ASTUnit::LoadEverything, Diags, CI.getFileSystemOpts(),
647
33
        CI.getCodeGenOpts().DebugTypeExtRefs);
648
649
33
    if (!AST)
650
0
      goto failure;
651
652
    // Inform the diagnostic client we are processing a source file.
653
33
    CI.getDiagnosticClient().BeginSourceFile(CI.getLangOpts(), nullptr);
654
33
    HasBegunSourceFile = true;
655
656
    // Set the shared objects, these are reset when we finish processing the
657
    // file, otherwise the CompilerInstance will happily destroy them.
658
33
    CI.setFileManager(&AST->getFileManager());
659
33
    CI.setSourceManager(&AST->getSourceManager());
660
33
    CI.setPreprocessor(AST->getPreprocessorPtr());
661
33
    Preprocessor &PP = CI.getPreprocessor();
662
33
    PP.getBuiltinInfo().initializeBuiltins(PP.getIdentifierTable(),
663
33
                                           PP.getLangOpts());
664
33
    CI.setASTContext(&AST->getASTContext());
665
666
33
    setCurrentInput(Input, std::move(AST));
667
668
    // Initialize the action.
669
33
    if (!BeginSourceFileAction(CI))
670
0
      goto failure;
671
672
    // Create the AST consumer.
673
33
    CI.setASTConsumer(CreateWrappedASTConsumer(CI, InputFile));
674
33
    if (!CI.hasASTConsumer())
675
0
      goto failure;
676
677
33
    return true;
678
33
  }
679
680
  // Set up the file and source managers, if needed.
681
67.7k
  if (!CI.hasFileManager()) {
682
37.0k
    if (!CI.createFileManager()) {
683
0
      goto failure;
684
0
    }
685
67.7k
  }
686
67.7k
  if (!CI.hasSourceManager())
687
38.3k
    CI.createSourceManager(CI.getFileManager());
688
689
  // Set up embedding for any specified files. Do this before we load any
690
  // source files, including the primary module map for the compilation.
691
3
  for (const auto &F : CI.getFrontendOpts().ModulesEmbedFiles) {
692
3
    if (auto FE = CI.getFileManager().getFile(F, /*openFile*/true))
693
2
      CI.getSourceManager().setFileIsTransient(*FE);
694
1
    else
695
1
      CI.getDiagnostics().Report(diag::err_modules_embed_file_not_found) << F;
696
3
  }
697
67.7k
  if (CI.getFrontendOpts().ModulesEmbedAllFiles)
698
10
    CI.getSourceManager().setAllFilesAreTransient(true);
699
700
  // IR files bypass the rest of initialization.
701
67.7k
  if (Input.getKind().getLanguage() == Language::LLVM_IR) {
702
123
    assert(hasIRSupport() &&
703
123
           "This action does not have IR file support!");
704
705
    // Inform the diagnostic client we are processing a source file.
706
123
    CI.getDiagnosticClient().BeginSourceFile(CI.getLangOpts(), nullptr);
707
123
    HasBegunSourceFile = true;
708
709
    // Initialize the action.
710
123
    if (!BeginSourceFileAction(CI))
711
0
      goto failure;
712
713
    // Initialize the main file entry.
714
123
    if (!CI.InitializeSourceManager(CurrentInput))
715
0
      goto failure;
716
717
123
    return true;
718
123
  }
719
720
  // If the implicit PCH include is actually a directory, rather than
721
  // a single file, search for a suitable PCH file in that directory.
722
67.6k
  if (!CI.getPreprocessorOpts().ImplicitPCHInclude.empty()) {
723
3.54k
    FileManager &FileMgr = CI.getFileManager();
724
3.54k
    PreprocessorOptions &PPOpts = CI.getPreprocessorOpts();
725
3.54k
    StringRef PCHInclude = PPOpts.ImplicitPCHInclude;
726
3.54k
    std::string SpecificModuleCachePath = CI.getSpecificModuleCachePath();
727
3.54k
    if (auto PCHDir = FileMgr.getDirectory(PCHInclude)) {
728
6
      std::error_code EC;
729
6
      SmallString<128> DirNative;
730
6
      llvm::sys::path::native((*PCHDir)->getName(), DirNative);
731
6
      bool Found = false;
732
6
      llvm::vfs::FileSystem &FS = FileMgr.getVirtualFileSystem();
733
6
      for (llvm::vfs::directory_iterator Dir = FS.dir_begin(DirNative, EC),
734
6
                                         DirEnd;
735
16
           Dir != DirEnd && 
!EC13
;
Dir.increment(EC)10
) {
736
        // Check whether this is an acceptable AST file.
737
13
        if (ASTReader::isAcceptableASTFile(
738
13
                Dir->path(), FileMgr, CI.getPCHContainerReader(),
739
13
                CI.getLangOpts(), CI.getTargetOpts(), CI.getPreprocessorOpts(),
740
3
                SpecificModuleCachePath)) {
741
3
          PPOpts.ImplicitPCHInclude = std::string(Dir->path());
742
3
          Found = true;
743
3
          break;
744
3
        }
745
13
      }
746
747
6
      if (!Found) {
748
3
        CI.getDiagnostics().Report(diag::err_fe_no_pch_in_dir) << PCHInclude;
749
3
        goto failure;
750
3
      }
751
67.6k
    }
752
3.54k
  }
753
754
  // Set up the preprocessor if needed. When parsing model files the
755
  // preprocessor of the original source is reused.
756
67.6k
  if (!isModelParsingAction())
757
67.6k
    CI.createPreprocessor(getTranslationUnitKind());
758
759
  // Inform the diagnostic client we are processing a source file.
760
67.6k
  CI.getDiagnosticClient().BeginSourceFile(CI.getLangOpts(),
761
67.6k
                                           &CI.getPreprocessor());
762
67.6k
  HasBegunSourceFile = true;
763
764
  // Initialize the main file entry.
765
67.6k
  if (!CI.InitializeSourceManager(Input))
766
4
    goto failure;
767
768
  // For module map files, we first parse the module map and synthesize a
769
  // "<module-includes>" buffer before more conventional processing.
770
67.6k
  if (Input.getKind().getFormat() == InputKind::ModuleMap) {
771
1.87k
    CI.getLangOpts().setCompilingModule(LangOptions::CMK_ModuleMap);
772
773
1.87k
    std::string PresumedModuleMapFile;
774
1.87k
    unsigned OffsetToContents;
775
1.87k
    if (loadModuleMapForModuleBuild(CI, Input.isSystem(),
776
1.87k
                                    Input.isPreprocessed(),
777
1.87k
                                    PresumedModuleMapFile, OffsetToContents))
778
0
      goto failure;
779
780
1.87k
    auto *CurrentModule = prepareToBuildModule(CI, Input.getFile());
781
1.87k
    if (!CurrentModule)
782
5
      goto failure;
783
784
1.86k
    CurrentModule->PresumedModuleMapFile = PresumedModuleMapFile;
785
786
1.86k
    if (OffsetToContents)
787
      // If the module contents are in the same file, skip to them.
788
88
      CI.getPreprocessor().setSkipMainFilePreamble(OffsetToContents, true);
789
1.77k
    else {
790
      // Otherwise, convert the module description to a suitable input buffer.
791
1.77k
      auto Buffer = getInputBufferForModule(CI, CurrentModule);
792
1.77k
      if (!Buffer)
793
0
        goto failure;
794
795
      // Reinitialize the main file entry to refer to the new input.
796
1.77k
      auto Kind = CurrentModule->IsSystem ? 
SrcMgr::C_System349
:
SrcMgr::C_User1.42k
;
797
1.77k
      auto &SourceMgr = CI.getSourceManager();
798
1.77k
      auto BufferID = SourceMgr.createFileID(std::move(Buffer), Kind);
799
1.77k
      assert(BufferID.isValid() && "couldn't create module buffer ID");
800
1.77k
      SourceMgr.setMainFileID(BufferID);
801
1.77k
    }
802
1.86k
  }
803
804
  // Initialize the action.
805
67.6k
  if (!BeginSourceFileAction(CI))
806
1
    goto failure;
807
808
  // If we were asked to load any module map files, do so now.
809
67.6k
  for (const auto &Filename : CI.getFrontendOpts().ModuleMapFiles) {
810
260
    if (auto File = CI.getFileManager().getFile(Filename))
811
259
      CI.getPreprocessor().getHeaderSearchInfo().loadModuleMapFile(
812
259
          *File, /*IsSystem*/false);
813
1
    else
814
1
      CI.getDiagnostics().Report(diag::err_module_map_not_found) << Filename;
815
260
  }
816
817
  // Add a module declaration scope so that modules from -fmodule-map-file
818
  // arguments may shadow modules found implicitly in search paths.
819
67.6k
  CI.getPreprocessor()
820
67.6k
      .getHeaderSearchInfo()
821
67.6k
      .getModuleMap()
822
67.6k
      .finishModuleDeclarationScope();
823
824
  // Create the AST context and consumer unless this is a preprocessor only
825
  // action.
826
67.6k
  if (!usesPreprocessorOnly()) {
827
    // Parsing a model file should reuse the existing ASTContext.
828
65.4k
    if (!isModelParsingAction())
829
65.4k
      CI.createASTContext();
830
831
    // For preprocessed files, check if the first line specifies the original
832
    // source file name with a linemarker.
833
65.4k
    std::string PresumedInputFile = std::string(getCurrentFileOrBufferName());
834
65.4k
    if (Input.isPreprocessed())
835
96
      ReadOriginalFileName(CI, PresumedInputFile);
836
837
65.4k
    std::unique_ptr<ASTConsumer> Consumer =
838
65.4k
        CreateWrappedASTConsumer(CI, PresumedInputFile);
839
65.4k
    if (!Consumer)
840
4
      goto failure;
841
842
    // FIXME: should not overwrite ASTMutationListener when parsing model files?
843
65.4k
    if (!isModelParsingAction())
844
65.4k
      CI.getASTContext().setASTMutationListener(Consumer->GetASTMutationListener());
845
846
65.4k
    if (!CI.getPreprocessorOpts().ChainedIncludes.empty()) {
847
      // Convert headers to PCH and chain them.
848
27
      IntrusiveRefCntPtr<ExternalSemaSource> source, FinalReader;
849
27
      source = createChainedIncludesSource(CI, FinalReader);
850
27
      if (!source)
851
0
        goto failure;
852
27
      CI.setASTReader(static_cast<ASTReader *>(FinalReader.get()));
853
27
      CI.getASTContext().setExternalSource(source);
854
65.4k
    } else if (CI.getLangOpts().Modules ||
855
57.0k
               !CI.getPreprocessorOpts().ImplicitPCHInclude.empty()) {
856
      // Use PCM or PCH.
857
11.7k
      assert(hasPCHSupport() && "This action does not have PCH support!");
858
11.7k
      ASTDeserializationListener *DeserialListener =
859
11.7k
          Consumer->GetASTDeserializationListener();
860
11.7k
      bool DeleteDeserialListener = false;
861
11.7k
      if (CI.getPreprocessorOpts().DumpDeserializedPCHDecls) {
862
0
        DeserialListener = new DeserializedDeclsDumper(DeserialListener,
863
0
                                                       DeleteDeserialListener);
864
0
        DeleteDeserialListener = true;
865
0
      }
866
11.7k
      if (!CI.getPreprocessorOpts().DeserializedPCHDeclsToErrorOn.empty()) {
867
106
        DeserialListener = new DeserializedDeclsChecker(
868
106
            CI.getASTContext(),
869
106
            CI.getPreprocessorOpts().DeserializedPCHDeclsToErrorOn,
870
106
            DeserialListener, DeleteDeserialListener);
871
106
        DeleteDeserialListener = true;
872
106
      }
873
11.7k
      if (!CI.getPreprocessorOpts().ImplicitPCHInclude.empty()) {
874
3.53k
        CI.createPCHExternalASTSource(
875
3.53k
            CI.getPreprocessorOpts().ImplicitPCHInclude,
876
3.53k
            CI.getPreprocessorOpts().DisablePCHOrModuleValidation,
877
3.53k
            CI.getPreprocessorOpts().AllowPCHWithCompilerErrors,
878
3.53k
            DeserialListener, DeleteDeserialListener);
879
3.53k
        if (!CI.getASTContext().getExternalSource())
880
27
          goto failure;
881
11.7k
      }
882
      // If modules are enabled, create the AST reader before creating
883
      // any builtins, so that all declarations know that they might be
884
      // extended by an external source.
885
11.7k
      if (CI.getLangOpts().Modules || 
!CI.hasASTContext()3.41k
||
886
8.33k
          
!CI.getASTContext().getExternalSource()3.41k
) {
887
8.33k
        CI.createASTReader();
888
8.33k
        CI.getASTReader()->setDeserializationListener(DeserialListener,
889
8.33k
                                                      DeleteDeserialListener);
890
8.33k
      }
891
11.7k
    }
892
893
65.4k
    CI.setASTConsumer(std::move(Consumer));
894
65.4k
    if (!CI.hasASTConsumer())
895
0
      goto failure;
896
67.6k
  }
897
898
  // Initialize built-in info as long as we aren't using an external AST
899
  // source.
900
67.6k
  if (CI.getLangOpts().Modules || 
!CI.hasASTContext()59.1k
||
901
64.1k
      
!CI.getASTContext().getExternalSource()57.1k
) {
902
64.1k
    Preprocessor &PP = CI.getPreprocessor();
903
64.1k
    PP.getBuiltinInfo().initializeBuiltins(PP.getIdentifierTable(),
904
64.1k
                                           PP.getLangOpts());
905
3.44k
  } else {
906
    // FIXME: If this is a problem, recover from it by creating a multiplex
907
    // source.
908
3.44k
    assert((!CI.getLangOpts().Modules || CI.getASTReader()) &&
909
3.44k
           "modules enabled but created an external source that "
910
3.44k
           "doesn't support modules");
911
3.44k
  }
912
913
  // If we were asked to load any module files, do so now.
914
67.6k
  for (const auto &ModuleFile : CI.getFrontendOpts().ModuleFiles)
915
409
    if (!CI.loadModuleFile(ModuleFile))
916
10
      goto failure;
917
918
  // If there is a layout overrides file, attach an external AST source that
919
  // provides the layouts from that file.
920
67.6k
  if (!CI.getFrontendOpts().OverrideRecordLayoutsFile.empty() &&
921
6
      CI.hasASTContext() && !CI.getASTContext().getExternalSource()) {
922
6
    IntrusiveRefCntPtr<ExternalASTSource>
923
6
      Override(new LayoutOverrideSource(
924
6
                     CI.getFrontendOpts().OverrideRecordLayoutsFile));
925
6
    CI.getASTContext().setExternalSource(Override);
926
6
  }
927
928
67.6k
  return true;
929
930
  // If we failed, reset state since the client will not end up calling the
931
  // matching EndSourceFile().
932
66
failure:
933
66
  if (HasBegunSourceFile)
934
51
    CI.getDiagnosticClient().EndSourceFile();
935
66
  CI.clearOutputFiles(/*EraseFiles=*/true);
936
66
  CI.getLangOpts().setCompilingModule(LangOptions::CMK_None);
937
66
  setCurrentInput(FrontendInputFile());
938
66
  setCompilerInstance(nullptr);
939
66
  return false;
940
67.6k
}
941
942
66.4k
llvm::Error FrontendAction::Execute() {
943
66.4k
  CompilerInstance &CI = getCompilerInstance();
944
945
66.4k
  if (CI.hasFrontendTimer()) {
946
18
    llvm::TimeRegion Timer(CI.getFrontendTimer());
947
18
    ExecuteAction();
948
18
  }
949
66.4k
  else ExecuteAction();
950
951
  // If we are supposed to rebuild the global module index, do so now unless
952
  // there were any module-build failures.
953
66.4k
  if (CI.shouldBuildGlobalModuleIndex() && 
CI.hasFileManager()809
&&
954
809
      CI.hasPreprocessor()) {
955
809
    StringRef Cache =
956
809
        CI.getPreprocessor().getHeaderSearchInfo().getModuleCachePath();
957
809
    if (!Cache.empty()) {
958
738
      if (llvm::Error Err = GlobalModuleIndex::writeIndex(
959
22
              CI.getFileManager(), CI.getPCHContainerReader(), Cache)) {
960
        // FIXME this drops the error on the floor, but
961
        // Index/pch-from-libclang.c seems to rely on dropping at least some of
962
        // the error conditions!
963
22
        consumeError(std::move(Err));
964
22
      }
965
738
    }
966
809
  }
967
968
66.4k
  return llvm::Error::success();
969
66.4k
}
970
971
66.4k
void FrontendAction::EndSourceFile() {
972
66.4k
  CompilerInstance &CI = getCompilerInstance();
973
974
  // Inform the diagnostic client we are done with this source file.
975
66.4k
  CI.getDiagnosticClient().EndSourceFile();
976
977
  // Inform the preprocessor we are done.
978
66.4k
  if (CI.hasPreprocessor())
979
66.3k
    CI.getPreprocessor().EndSourceFile();
980
981
  // Finalize the action.
982
66.4k
  EndSourceFileAction();
983
984
  // Sema references the ast consumer, so reset sema first.
985
  //
986
  // FIXME: There is more per-file stuff we could just drop here?
987
66.4k
  bool DisableFree = CI.getFrontendOpts().DisableFree;
988
66.4k
  if (DisableFree) {
989
5.37k
    CI.resetAndLeakSema();
990
5.37k
    CI.resetAndLeakASTContext();
991
5.37k
    llvm::BuryPointer(CI.takeASTConsumer().get());
992
61.0k
  } else {
993
61.0k
    CI.setSema(nullptr);
994
61.0k
    CI.setASTContext(nullptr);
995
61.0k
    CI.setASTConsumer(nullptr);
996
61.0k
  }
997
998
66.4k
  if (CI.getFrontendOpts().ShowStats) {
999
3
    llvm::errs() << "\nSTATISTICS FOR '" << getCurrentFile() << "':\n";
1000
3
    CI.getPreprocessor().PrintStats();
1001
3
    CI.getPreprocessor().getIdentifierTable().PrintStats();
1002
3
    CI.getPreprocessor().getHeaderSearchInfo().PrintStats();
1003
3
    CI.getSourceManager().PrintStats();
1004
3
    llvm::errs() << "\n";
1005
3
  }
1006
1007
  // Cleanup the output streams, and erase the output files if instructed by the
1008
  // FrontendAction.
1009
66.4k
  CI.clearOutputFiles(/*EraseFiles=*/shouldEraseOutputFiles());
1010
1011
66.4k
  if (isCurrentFileAST()) {
1012
48
    if (DisableFree) {
1013
7
      CI.resetAndLeakPreprocessor();
1014
7
      CI.resetAndLeakSourceManager();
1015
7
      CI.resetAndLeakFileManager();
1016
7
      llvm::BuryPointer(std::move(CurrentASTUnit));
1017
41
    } else {
1018
41
      CI.setPreprocessor(nullptr);
1019
41
      CI.setSourceManager(nullptr);
1020
41
      CI.setFileManager(nullptr);
1021
41
    }
1022
48
  }
1023
1024
66.4k
  setCompilerInstance(nullptr);
1025
66.4k
  setCurrentInput(FrontendInputFile());
1026
66.4k
  CI.getLangOpts().setCompilingModule(LangOptions::CMK_None);
1027
66.4k
}
1028
1029
66.3k
bool FrontendAction::shouldEraseOutputFiles() {
1030
66.3k
  return getCompilerInstance().getDiagnostics().hasErrorOccurred();
1031
66.3k
}
1032
1033
//===----------------------------------------------------------------------===//
1034
// Utility Actions
1035
//===----------------------------------------------------------------------===//
1036
1037
64.1k
void ASTFrontendAction::ExecuteAction() {
1038
64.1k
  CompilerInstance &CI = getCompilerInstance();
1039
64.1k
  if (!CI.hasPreprocessor())
1040
0
    return;
1041
1042
  // FIXME: Move the truncation aspect of this into Sema, we delayed this till
1043
  // here so the source manager would be initialized.
1044
64.1k
  if (hasCodeCompletionSupport() &&
1045
11.9k
      !CI.getFrontendOpts().CodeCompletionAt.FileName.empty())
1046
1.15k
    CI.createCodeCompletionConsumer();
1047
1048
  // Use a code completion consumer?
1049
64.1k
  CodeCompleteConsumer *CompletionConsumer = nullptr;
1050
64.1k
  if (CI.hasCodeCompletionConsumer())
1051
1.15k
    CompletionConsumer = &CI.getCodeCompletionConsumer();
1052
1053
64.1k
  if (!CI.hasSema())
1054
64.1k
    CI.createSema(getTranslationUnitKind(), CompletionConsumer);
1055
1056
64.1k
  ParseAST(CI.getSema(), CI.getFrontendOpts().ShowStats,
1057
64.1k
           CI.getFrontendOpts().SkipFunctionBodies);
1058
64.1k
}
1059
1060
0
void PluginASTAction::anchor() { }
1061
1062
std::unique_ptr<ASTConsumer>
1063
PreprocessorFrontendAction::CreateASTConsumer(CompilerInstance &CI,
1064
0
                                              StringRef InFile) {
1065
0
  llvm_unreachable("Invalid CreateASTConsumer on preprocessor action!");
1066
0
}
1067
1068
49
bool WrapperFrontendAction::PrepareToExecuteAction(CompilerInstance &CI) {
1069
49
  return WrappedAction->PrepareToExecuteAction(CI);
1070
49
}
1071
std::unique_ptr<ASTConsumer>
1072
WrapperFrontendAction::CreateASTConsumer(CompilerInstance &CI,
1073
34
                                         StringRef InFile) {
1074
34
  return WrappedAction->CreateASTConsumer(CI, InFile);
1075
34
}
1076
0
bool WrapperFrontendAction::BeginInvocation(CompilerInstance &CI) {
1077
0
  return WrappedAction->BeginInvocation(CI);
1078
0
}
1079
36
bool WrapperFrontendAction::BeginSourceFileAction(CompilerInstance &CI) {
1080
36
  WrappedAction->setCurrentInput(getCurrentInput());
1081
36
  WrappedAction->setCompilerInstance(&CI);
1082
36
  auto Ret = WrappedAction->BeginSourceFileAction(CI);
1083
  // BeginSourceFileAction may change CurrentInput, e.g. during module builds.
1084
36
  setCurrentInput(WrappedAction->getCurrentInput());
1085
36
  return Ret;
1086
36
}
1087
36
void WrapperFrontendAction::ExecuteAction() {
1088
36
  WrappedAction->ExecuteAction();
1089
36
}
1090
36
void WrapperFrontendAction::EndSourceFileAction() {
1091
36
  WrappedAction->EndSourceFileAction();
1092
36
}
1093
36
bool WrapperFrontendAction::shouldEraseOutputFiles() {
1094
36
  return WrappedAction->shouldEraseOutputFiles();
1095
36
}
1096
1097
36
bool WrapperFrontendAction::usesPreprocessorOnly() const {
1098
36
  return WrappedAction->usesPreprocessorOnly();
1099
36
}
1100
37
TranslationUnitKind WrapperFrontendAction::getTranslationUnitKind() {
1101
37
  return WrappedAction->getTranslationUnitKind();
1102
37
}
1103
4
bool WrapperFrontendAction::hasPCHSupport() const {
1104
4
  return WrappedAction->hasPCHSupport();
1105
4
}
1106
0
bool WrapperFrontendAction::hasASTFileSupport() const {
1107
0
  return WrappedAction->hasASTFileSupport();
1108
0
}
1109
0
bool WrapperFrontendAction::hasIRSupport() const {
1110
0
  return WrappedAction->hasIRSupport();
1111
0
}
1112
0
bool WrapperFrontendAction::hasCodeCompletionSupport() const {
1113
0
  return WrappedAction->hasCodeCompletionSupport();
1114
0
}
1115
1116
WrapperFrontendAction::WrapperFrontendAction(
1117
    std::unique_ptr<FrontendAction> WrappedAction)
1118
49
  : WrappedAction(std::move(WrappedAction)) {}
1119