1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
| //===--- FrontendActions.cpp ----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "clang/Frontend/FrontendActions.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/LangStandard.h"
#include "clang/Frontend/ASTConsumers.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/FrontendDiagnostic.h"
#include "clang/Frontend/MultiplexConsumer.h"
#include "clang/Frontend/Utils.h"
#include "clang/Lex/DependencyDirectivesSourceMinimizer.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Lex/PreprocessorOptions.h"
#include "clang/Sema/TemplateInstCallback.h"
#include "clang/Serialization/ASTReader.h"
#include "clang/Serialization/ASTWriter.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/YAMLTraits.h"
#include "llvm/Support/raw_ostream.h"
#include <memory>
#include <system_error>
using namespace clang;
namespace {
CodeCompleteConsumer *GetCodeCompletionConsumer(CompilerInstance &CI) {
return CI.hasCodeCompletionConsumer() ? &CI.getCodeCompletionConsumer()
: nullptr;
}
void EnsureSemaIsCreated(CompilerInstance &CI, FrontendAction &Action) {
if (Action.hasCodeCompletionSupport() &&
!CI.getFrontendOpts().CodeCompletionAt.FileName.empty())
CI.createCodeCompletionConsumer();
if (!CI.hasSema())
CI.createSema(Action.getTranslationUnitKind(),
GetCodeCompletionConsumer(CI));
}
} // namespace
//===----------------------------------------------------------------------===//
// Custom Actions
//===----------------------------------------------------------------------===//
std::unique_ptr<ASTConsumer>
InitOnlyAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
return std::make_unique<ASTConsumer>();
}
void InitOnlyAction::ExecuteAction() {
}
//===----------------------------------------------------------------------===//
// AST Consumer Actions
//===----------------------------------------------------------------------===//
std::unique_ptr<ASTConsumer>
ASTPrintAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
if (std::unique_ptr<raw_ostream> OS =
CI.createDefaultOutputFile(false, InFile))
return CreateASTPrinter(std::move(OS), CI.getFrontendOpts().ASTDumpFilter);
return nullptr;
}
std::unique_ptr<ASTConsumer>
ASTDumpAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
const FrontendOptions &Opts = CI.getFrontendOpts();
return CreateASTDumper(nullptr /*Dump to stdout.*/, Opts.ASTDumpFilter,
Opts.ASTDumpDecls, Opts.ASTDumpAll,
Opts.ASTDumpLookups, Opts.ASTDumpFormat);
}
std::unique_ptr<ASTConsumer>
ASTDeclListAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
return CreateASTDeclNodeLister();
}
std::unique_ptr<ASTConsumer>
ASTViewAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
return CreateASTViewer();
}
std::unique_ptr<ASTConsumer>
GeneratePCHAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
std::string Sysroot;
if (!ComputeASTConsumerArguments(CI, /*ref*/ Sysroot))
return nullptr;
std::string OutputFile;
std::unique_ptr<raw_pwrite_stream> OS =
CreateOutputFile(CI, InFile, /*ref*/ OutputFile);
if (!OS)
return nullptr;
if (!CI.getFrontendOpts().RelocatablePCH)
Sysroot.clear();
const auto &FrontendOpts = CI.getFrontendOpts();
auto Buffer = std::make_shared<PCHBuffer>();
std::vector<std::unique_ptr<ASTConsumer>> Consumers;
Consumers.push_back(std::make_unique<PCHGenerator>(
CI.getPreprocessor(), CI.getModuleCache(), OutputFile, Sysroot, Buffer,
FrontendOpts.ModuleFileExtensions,
CI.getPreprocessorOpts().AllowPCHWithCompilerErrors,
FrontendOpts.IncludeTimestamps, +CI.getLangOpts().CacheGeneratedPCH));
Consumers.push_back(CI.getPCHContainerWriter().CreatePCHContainerGenerator(
CI, InFile, OutputFile, std::move(OS), Buffer));
return std::make_unique<MultiplexConsumer>(std::move(Consumers));
}
bool GeneratePCHAction::ComputeASTConsumerArguments(CompilerInstance &CI,
std::string &Sysroot) {
Sysroot = CI.getHeaderSearchOpts().Sysroot;
if (CI.getFrontendOpts().RelocatablePCH && Sysroot.empty()) {
CI.getDiagnostics().Report(diag::err_relocatable_without_isysroot);
return false;
}
return true;
}
std::unique_ptr<llvm::raw_pwrite_stream>
GeneratePCHAction::CreateOutputFile(CompilerInstance &CI, StringRef InFile,
std::string &OutputFile) {
// We use createOutputFile here because this is exposed via libclang, and we
// must disable the RemoveFileOnSignal behavior.
// We use a temporary to avoid race conditions.
std::unique_ptr<raw_pwrite_stream> OS =
CI.createOutputFile(CI.getFrontendOpts().OutputFile, /*Binary=*/true,
/*RemoveFileOnSignal=*/false, InFile,
/*Extension=*/"", /*UseTemporary=*/true);
if (!OS)
return nullptr;
OutputFile = CI.getFrontendOpts().OutputFile;
return OS;
}
bool GeneratePCHAction::shouldEraseOutputFiles() {
if (getCompilerInstance().getPreprocessorOpts().AllowPCHWithCompilerErrors)
return false;
return ASTFrontendAction::shouldEraseOutputFiles();
}
bool GeneratePCHAction::BeginSourceFileAction(CompilerInstance &CI) {
CI.getLangOpts().CompilingPCH = true;
return true;
}
std::unique_ptr<ASTConsumer>
GenerateModuleAction::CreateASTConsumer(CompilerInstance &CI,
StringRef InFile) {
std::unique_ptr<raw_pwrite_stream> OS = CreateOutputFile(CI, InFile);
if (!OS)
return nullptr;
std::string OutputFile = CI.getFrontendOpts().OutputFile;
std::string Sysroot;
auto Buffer = std::make_shared<PCHBuffer>();
std::vector<std::unique_ptr<ASTConsumer>> Consumers;
Consumers.push_back(std::make_unique<PCHGenerator>(
CI.getPreprocessor(), CI.getModuleCache(), OutputFile, Sysroot, Buffer,
CI.getFrontendOpts().ModuleFileExtensions,
/*AllowASTWithErrors=*/false,
/*IncludeTimestamps=*/
+CI.getFrontendOpts().BuildingImplicitModule,
/*ShouldCacheASTInMemory=*/
+CI.getFrontendOpts().BuildingImplicitModule));
Consumers.push_back(CI.getPCHContainerWriter().CreatePCHContainerGenerator(
CI, InFile, OutputFile, std::move(OS), Buffer));
return std::make_unique<MultiplexConsumer>(std::move(Consumers));
}
bool GenerateModuleFromModuleMapAction::BeginSourceFileAction(
CompilerInstance &CI) {
if (!CI.getLangOpts().Modules) {
CI.getDiagnostics().Report(diag::err_module_build_requires_fmodules);
return false;
}
return GenerateModuleAction::BeginSourceFileAction(CI);
}
std::unique_ptr<raw_pwrite_stream>
GenerateModuleFromModuleMapAction::CreateOutputFile(CompilerInstance &CI,
StringRef InFile) {
// If no output file was provided, figure out where this module would go
// in the module cache.
if (CI.getFrontendOpts().OutputFile.empty()) {
StringRef ModuleMapFile = CI.getFrontendOpts().OriginalModuleMap;
if (ModuleMapFile.empty())
ModuleMapFile = InFile;
HeaderSearch &HS = CI.getPreprocessor().getHeaderSearchInfo();
CI.getFrontendOpts().OutputFile =
HS.getCachedModuleFileName(CI.getLangOpts().CurrentModule,
ModuleMapFile);
}
// We use createOutputFile here because this is exposed via libclang, and we
// must disable the RemoveFileOnSignal behavior.
// We use a temporary to avoid race conditions.
return CI.createOutputFile(CI.getFrontendOpts().OutputFile, /*Binary=*/true,
/*RemoveFileOnSignal=*/false, InFile,
/*Extension=*/"", /*UseTemporary=*/true,
/*CreateMissingDirectories=*/true);
}
bool GenerateModuleInterfaceAction::BeginSourceFileAction(
CompilerInstance &CI) {
if (!CI.getLangOpts().ModulesTS && !CI.getLangOpts().CPlusPlusModules) {
CI.getDiagnostics().Report(diag::err_module_interface_requires_cpp_modules);
return false;
}
CI.getLangOpts().setCompilingModule(LangOptions::CMK_ModuleInterface);
return GenerateModuleAction::BeginSourceFileAction(CI);
}
std::unique_ptr<raw_pwrite_stream>
GenerateModuleInterfaceAction::CreateOutputFile(CompilerInstance &CI,
StringRef InFile) {
return CI.createDefaultOutputFile(/*Binary=*/true, InFile, "pcm");
}
bool GenerateHeaderModuleAction::PrepareToExecuteAction(
CompilerInstance &CI) {
if (!CI.getLangOpts().Modules) {
CI.getDiagnostics().Report(diag::err_header_module_requires_modules);
return false;
}
auto &Inputs = CI.getFrontendOpts().Inputs;
if (Inputs.empty())
return GenerateModuleAction::BeginInvocation(CI);
auto Kind = Inputs[0].getKind();
// Convert the header file inputs into a single module input buffer.
SmallString<256> HeaderContents;
ModuleHeaders.reserve(Inputs.size());
for (const FrontendInputFile &FIF : Inputs) {
// FIXME: We should support re-compiling from an AST file.
if (FIF.getKind().getFormat() != InputKind::Source || !FIF.isFile()) {
CI.getDiagnostics().Report(diag::err_module_header_file_not_found)
<< (FIF.isFile() ? FIF.getFile()
: FIF.getBuffer()->getBufferIdentifier());
return true;
}
HeaderContents += "#include \"";
HeaderContents += FIF.getFile();
HeaderContents += "\"\n";
ModuleHeaders.push_back(FIF.getFile());
}
Buffer = llvm::MemoryBuffer::getMemBufferCopy(
HeaderContents, Module::getModuleInputBufferName());
// Set that buffer up as our "real" input.
Inputs.clear();
Inputs.push_back(FrontendInputFile(Buffer.get(), Kind, /*IsSystem*/false));
return GenerateModuleAction::PrepareToExecuteAction(CI);
}
bool GenerateHeaderModuleAction::BeginSourceFileAction(
CompilerInstance &CI) {
CI.getLangOpts().setCompilingModule(LangOptions::CMK_HeaderModule);
// Synthesize a Module object for the given headers.
auto &HS = CI.getPreprocessor().getHeaderSearchInfo();
SmallVector<Module::Header, 16> Headers;
for (StringRef Name : ModuleHeaders) {
const DirectoryLookup *CurDir = nullptr;
Optional<FileEntryRef> FE = HS.LookupFile(
Name, SourceLocation(), /*Angled*/ false, nullptr, CurDir, None,
nullptr, nullptr, nullptr, nullptr, nullptr, nullptr);
if (!FE) {
CI.getDiagnostics().Report(diag::err_module_header_file_not_found)
<< Name;
continue;
}
Headers.push_back({Name, &FE->getFileEntry()});
}
HS.getModuleMap().createHeaderModule(CI.getLangOpts().CurrentModule, Headers);
return GenerateModuleAction::BeginSourceFileAction(CI);
}
std::unique_ptr<raw_pwrite_stream>
GenerateHeaderModuleAction::CreateOutputFile(CompilerInstance &CI,
StringRef InFile) {
return CI.createDefaultOutputFile(/*Binary=*/true, InFile, "pcm");
}
SyntaxOnlyAction::~SyntaxOnlyAction() {
}
std::unique_ptr<ASTConsumer>
SyntaxOnlyAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
return std::make_unique<ASTConsumer>();
}
std::unique_ptr<ASTConsumer>
DumpModuleInfoAction::CreateASTConsumer(CompilerInstance &CI,
StringRef InFile) {
return std::make_unique<ASTConsumer>();
}
std::unique_ptr<ASTConsumer>
VerifyPCHAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
return std::make_unique<ASTConsumer>();
}
void VerifyPCHAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
bool Preamble = CI.getPreprocessorOpts().PrecompiledPreambleBytes.first != 0;
const std::string &Sysroot = CI.getHeaderSearchOpts().Sysroot;
std::unique_ptr<ASTReader> Reader(new ASTReader(
CI.getPreprocessor(), CI.getModuleCache(), &CI.getASTContext(),
CI.getPCHContainerReader(), CI.getFrontendOpts().ModuleFileExtensions,
Sysroot.empty() ? "" : Sysroot.c_str(),
/*DisableValidation*/ false,
/*AllowPCHWithCompilerErrors*/ false,
/*AllowConfigurationMismatch*/ true,
/*ValidateSystemInputs*/ true));
Reader->ReadAST(getCurrentFile(),
Preamble ? serialization::MK_Preamble
: serialization::MK_PCH,
SourceLocation(),
ASTReader::ARR_ConfigurationMismatch);
}
namespace {
struct TemplightEntry {
std::string Name;
std::string Kind;
std::string Event;
std::string DefinitionLocation;
std::string PointOfInstantiation;
};
} // namespace
namespace llvm {
namespace yaml {
template <> struct MappingTraits<TemplightEntry> {
static void mapping(IO &io, TemplightEntry &fields) {
io.mapRequired("name", fields.Name);
io.mapRequired("kind", fields.Kind);
io.mapRequired("event", fields.Event);
io.mapRequired("orig", fields.DefinitionLocation);
io.mapRequired("poi", fields.PointOfInstantiation);
}
};
} // namespace yaml
} // namespace llvm
namespace {
class DefaultTemplateInstCallback : public TemplateInstantiationCallback {
using CodeSynthesisContext = Sema::CodeSynthesisContext;
public:
void initialize(const Sema &) override {}
void finalize(const Sema &) override {}
void atTemplateBegin(const Sema &TheSema,
const CodeSynthesisContext &Inst) override {
displayTemplightEntry<true>(llvm::outs(), TheSema, Inst);
}
void atTemplateEnd(const Sema &TheSema,
const CodeSynthesisContext &Inst) override {
displayTemplightEntry<false>(llvm::outs(), TheSema, Inst);
}
private:
static std::string toString(CodeSynthesisContext::SynthesisKind Kind) {
switch (Kind) {
case CodeSynthesisContext::TemplateInstantiation:
return "TemplateInstantiation";
case CodeSynthesisContext::DefaultTemplateArgumentInstantiation:
return "DefaultTemplateArgumentInstantiation";
case CodeSynthesisContext::DefaultFunctionArgumentInstantiation:
return "DefaultFunctionArgumentInstantiation";
case CodeSynthesisContext::ExplicitTemplateArgumentSubstitution:
return "ExplicitTemplateArgumentSubstitution";
case CodeSynthesisContext::DeducedTemplateArgumentSubstitution:
return "DeducedTemplateArgumentSubstitution";
case CodeSynthesisContext::PriorTemplateArgumentSubstitution:
return "PriorTemplateArgumentSubstitution";
case CodeSynthesisContext::DefaultTemplateArgumentChecking:
return "DefaultTemplateArgumentChecking";
case CodeSynthesisContext::ExceptionSpecEvaluation:
return "ExceptionSpecEvaluation";
case CodeSynthesisContext::ExceptionSpecInstantiation:
return "ExceptionSpecInstantiation";
case CodeSynthesisContext::DeclaringSpecialMember:
return "DeclaringSpecialMember";
case CodeSynthesisContext::DefiningSynthesizedFunction:
return "DefiningSynthesizedFunction";
case CodeSynthesisContext::RewritingOperatorAsSpaceship:
return "RewritingOperatorAsSpaceship";
case CodeSynthesisContext::Memoization:
return "Memoization";
case CodeSynthesisContext::ConstraintsCheck:
return "ConstraintsCheck";
case CodeSynthesisContext::ConstraintSubstitution:
return "ConstraintSubstitution";
}
return "";
}
template <bool BeginInstantiation>
static void displayTemplightEntry(llvm::raw_ostream &Out, const Sema &TheSema,
const CodeSynthesisContext &Inst) {
std::string YAML;
{
llvm::raw_string_ostream OS(YAML);
llvm::yaml::Output YO(OS);
TemplightEntry Entry =
getTemplightEntry<BeginInstantiation>(TheSema, Inst);
llvm::yaml::EmptyContext Context;
llvm::yaml::yamlize(YO, Entry, true, Context);
}
Out << "---" << YAML << "\n";
}
template <bool BeginInstantiation>
static TemplightEntry getTemplightEntry(const Sema &TheSema,
const CodeSynthesisContext &Inst) {
TemplightEntry Entry;
Entry.Kind = toString(Inst.Kind);
Entry.Event = BeginInstantiation ? "Begin" : "End";
if (auto *NamedTemplate = dyn_cast_or_null<NamedDecl>(Inst.Entity)) {
llvm::raw_string_ostream OS(Entry.Name);
NamedTemplate->getNameForDiagnostic(OS, TheSema.getLangOpts(), true);
const PresumedLoc DefLoc =
TheSema.getSourceManager().getPresumedLoc(Inst.Entity->getLocation());
if(!DefLoc.isInvalid())
Entry.DefinitionLocation = std::string(DefLoc.getFilename()) + ":" +
std::to_string(DefLoc.getLine()) + ":" +
std::to_string(DefLoc.getColumn());
}
const PresumedLoc PoiLoc =
TheSema.getSourceManager().getPresumedLoc(Inst.PointOfInstantiation);
if (!PoiLoc.isInvalid()) {
Entry.PointOfInstantiation = std::string(PoiLoc.getFilename()) + ":" +
std::to_string(PoiLoc.getLine()) + ":" +
std::to_string(PoiLoc.getColumn());
}
return Entry;
}
};
} // namespace
std::unique_ptr<ASTConsumer>
TemplightDumpAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
return std::make_unique<ASTConsumer>();
}
void TemplightDumpAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
// This part is normally done by ASTFrontEndAction, but needs to happen
// before Templight observers can be created
// FIXME: Move the truncation aspect of this into Sema, we delayed this till
// here so the source manager would be initialized.
EnsureSemaIsCreated(CI, *this);
CI.getSema().TemplateInstCallbacks.push_back(
std::make_unique<DefaultTemplateInstCallback>());
ASTFrontendAction::ExecuteAction();
}
namespace {
/// AST reader listener that dumps module information for a module
/// file.
class DumpModuleInfoListener : public ASTReaderListener {
llvm::raw_ostream &Out;
public:
DumpModuleInfoListener(llvm::raw_ostream &Out) : Out(Out) { }
#define DUMP_BOOLEAN(Value, Text) \
Out.indent(4) << Text << ": " << (Value? "Yes" : "No") << "\n"
bool ReadFullVersionInformation(StringRef FullVersion) override {
Out.indent(2)
<< "Generated by "
<< (FullVersion == getClangFullRepositoryVersion()? "this"
: "a different")
<< " Clang: " << FullVersion << "\n";
return ASTReaderListener::ReadFullVersionInformation(FullVersion);
}
void ReadModuleName(StringRef ModuleName) override {
Out.indent(2) << "Module name: " << ModuleName << "\n";
}
void ReadModuleMapFile(StringRef ModuleMapPath) override {
Out.indent(2) << "Module map file: " << ModuleMapPath << "\n";
}
bool ReadLanguageOptions(const LangOptions &LangOpts, bool Complain,
bool AllowCompatibleDifferences) override {
Out.indent(2) << "Language options:\n";
#define LANGOPT(Name, Bits, Default, Description) \
DUMP_BOOLEAN(LangOpts.Name, Description);
#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
Out.indent(4) << Description << ": " \
<< static_cast<unsigned>(LangOpts.get##Name()) << "\n";
#define VALUE_LANGOPT(Name, Bits, Default, Description) \
Out.indent(4) << Description << ": " << LangOpts.Name << "\n";
#define BENIGN_LANGOPT(Name, Bits, Default, Description)
#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
#include "clang/Basic/LangOptions.def"
if (!LangOpts.ModuleFeatures.empty()) {
Out.indent(4) << "Module features:\n";
for (StringRef Feature : LangOpts.ModuleFeatures)
Out.indent(6) << Feature << "\n";
}
return false;
}
bool ReadTargetOptions(const TargetOptions &TargetOpts, bool Complain,
bool AllowCompatibleDifferences) override {
Out.indent(2) << "Target options:\n";
Out.indent(4) << " Triple: " << TargetOpts.Triple << "\n";
Out.indent(4) << " CPU: " << TargetOpts.CPU << "\n";
Out.indent(4) << " ABI: " << TargetOpts.ABI << "\n";
if (!TargetOpts.FeaturesAsWritten.empty()) {
Out.indent(4) << "Target features:\n";
for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size();
I != N; ++I) {
Out.indent(6) << TargetOpts.FeaturesAsWritten[I] << "\n";
}
}
return false;
}
bool ReadDiagnosticOptions(IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts,
bool Complain) override {
Out.indent(2) << "Diagnostic options:\n";
#define DIAGOPT(Name, Bits, Default) DUMP_BOOLEAN(DiagOpts->Name, #Name);
#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
Out.indent(4) << #Name << ": " << DiagOpts->get##Name() << "\n";
#define VALUE_DIAGOPT(Name, Bits, Default) \
Out.indent(4) << #Name << ": " << DiagOpts->Name << "\n";
#include "clang/Basic/DiagnosticOptions.def"
Out.indent(4) << "Diagnostic flags:\n";
for (const std::string &Warning : DiagOpts->Warnings)
Out.indent(6) << "-W" << Warning << "\n";
for (const std::string &Remark : DiagOpts->Remarks)
Out.indent(6) << "-R" << Remark << "\n";
return false;
}
bool ReadHeaderSearchOptions(const HeaderSearchOptions &HSOpts,
StringRef SpecificModuleCachePath,
bool Complain) override {
Out.indent(2) << "Header search options:\n";
Out.indent(4) << "System root [-isysroot=]: '" << HSOpts.Sysroot << "'\n";
Out.indent(4) << "Resource dir [ -resource-dir=]: '" << HSOpts.ResourceDir << "'\n";
Out.indent(4) << "Module Cache: '" << SpecificModuleCachePath << "'\n";
DUMP_BOOLEAN(HSOpts.UseBuiltinIncludes,
"Use builtin include directories [-nobuiltininc]");
DUMP_BOOLEAN(HSOpts.UseStandardSystemIncludes,
"Use standard system include directories [-nostdinc]");
DUMP_BOOLEAN(HSOpts.UseStandardCXXIncludes,
"Use standard C++ include directories [-nostdinc++]");
DUMP_BOOLEAN(HSOpts.UseLibcxx,
"Use libc++ (rather than libstdc++) [-stdlib=]");
return false;
}
bool ReadPreprocessorOptions(const PreprocessorOptions &PPOpts,
bool Complain,
std::string &SuggestedPredefines) override {
Out.indent(2) << "Preprocessor options:\n";
DUMP_BOOLEAN(PPOpts.UsePredefines,
"Uses compiler/target-specific predefines [-undef]");
DUMP_BOOLEAN(PPOpts.DetailedRecord,
"Uses detailed preprocessing record (for indexing)");
if (!PPOpts.Macros.empty()) {
Out.indent(4) << "Predefined macros:\n";
}
for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
I = PPOpts.Macros.begin(), IEnd = PPOpts.Macros.end();
I != IEnd; ++I) {
Out.indent(6);
if (I->second)
Out << "-U";
else
Out << "-D";
Out << I->first << "\n";
}
return false;
}
/// Indicates that a particular module file extension has been read.
void readModuleFileExtension(
const ModuleFileExtensionMetadata &Metadata) override {
Out.indent(2) << "Module file extension '"
<< Metadata.BlockName << "' " << Metadata.MajorVersion
<< "." << Metadata.MinorVersion;
if (!Metadata.UserInfo.empty()) {
Out << ": ";
Out.write_escaped(Metadata.UserInfo);
}
Out << "\n";
}
/// Tells the \c ASTReaderListener that we want to receive the
/// input files of the AST file via \c visitInputFile.
bool needsInputFileVisitation() override { return true; }
/// Tells the \c ASTReaderListener that we want to receive the
/// input files of the AST file via \c visitInputFile.
bool needsSystemInputFileVisitation() override { return true; }
/// Indicates that the AST file contains particular input file.
///
/// \returns true to continue receiving the next input file, false to stop.
bool visitInputFile(StringRef Filename, bool isSystem,
bool isOverridden, bool isExplicitModule) override {
Out.indent(2) << "Input file: " << Filename;
if (isSystem || isOverridden || isExplicitModule) {
Out << " [";
if (isSystem) {
Out << "System";
if (isOverridden || isExplicitModule)
Out << ", ";
}
if (isOverridden) {
Out << "Overridden";
if (isExplicitModule)
Out << ", ";
}
if (isExplicitModule)
Out << "ExplicitModule";
Out << "]";
}
Out << "\n";
return true;
}
/// Returns true if this \c ASTReaderListener wants to receive the
/// imports of the AST file via \c visitImport, false otherwise.
bool needsImportVisitation() const override { return true; }
/// If needsImportVisitation returns \c true, this is called for each
/// AST file imported by this AST file.
void visitImport(StringRef ModuleName, StringRef Filename) override {
Out.indent(2) << "Imports module '" << ModuleName
<< "': " << Filename.str() << "\n";
}
#undef DUMP_BOOLEAN
};
}
bool DumpModuleInfoAction::BeginInvocation(CompilerInstance &CI) {
// The Object file reader also supports raw ast files and there is no point in
// being strict about the module file format in -module-file-info mode.
CI.getHeaderSearchOpts().ModuleFormat = "obj";
return true;
}
void DumpModuleInfoAction::ExecuteAction() {
// Set up the output file.
std::unique_ptr<llvm::raw_fd_ostream> OutFile;
StringRef OutputFileName = getCompilerInstance().getFrontendOpts().OutputFile;
if (!OutputFileName.empty() && OutputFileName != "-") {
std::error_code EC;
OutFile.reset(new llvm::raw_fd_ostream(OutputFileName.str(), EC,
llvm::sys::fs::OF_Text));
}
llvm::raw_ostream &Out = OutFile.get()? *OutFile.get() : llvm::outs();
Out << "Information for module file '" << getCurrentFile() << "':\n";
auto &FileMgr = getCompilerInstance().getFileManager();
auto Buffer = FileMgr.getBufferForFile(getCurrentFile());
StringRef Magic = (*Buffer)->getMemBufferRef().getBuffer();
bool IsRaw = (Magic.size() >= 4 && Magic[0] == 'C' && Magic[1] == 'P' &&
Magic[2] == 'C' && Magic[3] == 'H');
Out << " Module format: " << (IsRaw ? "raw" : "obj") << "\n";
Preprocessor &PP = getCompilerInstance().getPreprocessor();
DumpModuleInfoListener Listener(Out);
HeaderSearchOptions &HSOpts =
PP.getHeaderSearchInfo().getHeaderSearchOpts();
ASTReader::readASTFileControlBlock(
getCurrentFile(), FileMgr, getCompilerInstance().getPCHContainerReader(),
/*FindModuleFileExtensions=*/true, Listener,
HSOpts.ModulesValidateDiagnosticOptions);
}
//===----------------------------------------------------------------------===//
// Preprocessor Actions
//===----------------------------------------------------------------------===//
void DumpRawTokensAction::ExecuteAction() {
Preprocessor &PP = getCompilerInstance().getPreprocessor();
SourceManager &SM = PP.getSourceManager();
// Start lexing the specified input file.
const llvm::MemoryBuffer *FromFile = SM.getBuffer(SM.getMainFileID());
Lexer RawLex(SM.getMainFileID(), FromFile, SM, PP.getLangOpts());
RawLex.SetKeepWhitespaceMode(true);
Token RawTok;
RawLex.LexFromRawLexer(RawTok);
while (RawTok.isNot(tok::eof)) {
PP.DumpToken(RawTok, true);
llvm::errs() << "\n";
RawLex.LexFromRawLexer(RawTok);
}
}
void DumpTokensAction::ExecuteAction() {
Preprocessor &PP = getCompilerInstance().getPreprocessor();
// Start preprocessing the specified input file.
Token Tok;
PP.EnterMainSourceFile();
do {
PP.Lex(Tok);
PP.DumpToken(Tok, true);
llvm::errs() << "\n";
} while (Tok.isNot(tok::eof));
}
void PreprocessOnlyAction::ExecuteAction() {
Preprocessor &PP = getCompilerInstance().getPreprocessor();
// Ignore unknown pragmas.
PP.IgnorePragmas();
Token Tok;
// Start parsing the specified input file.
PP.EnterMainSourceFile();
do {
PP.Lex(Tok);
} while (Tok.isNot(tok::eof));
}
void PrintPreprocessedAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
// Output file may need to be set to 'Binary', to avoid converting Unix style
// line feeds (<LF>) to Microsoft style line feeds (<CR><LF>).
//
// Look to see what type of line endings the file uses. If there's a
// CRLF, then we won't open the file up in binary mode. If there is
// just an LF or CR, then we will open the file up in binary mode.
// In this fashion, the output format should match the input format, unless
// the input format has inconsistent line endings.
//
// This should be a relatively fast operation since most files won't have
// all of their source code on a single line. However, that is still a
// concern, so if we scan for too long, we'll just assume the file should
// be opened in binary mode.
bool BinaryMode = true;
bool InvalidFile = false;
const SourceManager& SM = CI.getSourceManager();
const llvm::MemoryBuffer *Buffer = SM.getBuffer(SM.getMainFileID(),
&InvalidFile);
if (!InvalidFile) {
const char *cur = Buffer->getBufferStart();
const char *end = Buffer->getBufferEnd();
const char *next = (cur != end) ? cur + 1 : end;
// Limit ourselves to only scanning 256 characters into the source
// file. This is mostly a sanity check in case the file has no
// newlines whatsoever.
if (end - cur > 256) end = cur + 256;
while (next < end) {
if (*cur == 0x0D) { // CR
if (*next == 0x0A) // CRLF
BinaryMode = false;
break;
} else if (*cur == 0x0A) // LF
break;
++cur;
++next;
}
}
std::unique_ptr<raw_ostream> OS =
CI.createDefaultOutputFile(BinaryMode, getCurrentFileOrBufferName());
if (!OS) return;
// If we're preprocessing a module map, start by dumping the contents of the
// module itself before switching to the input buffer.
auto &Input = getCurrentInput();
if (Input.getKind().getFormat() == InputKind::ModuleMap) {
if (Input.isFile()) {
(*OS) << "# 1 \"";
OS->write_escaped(Input.getFile());
(*OS) << "\"\n";
}
getCurrentModule()->print(*OS);
(*OS) << "#pragma clang module contents\n";
}
DoPrintPreprocessedInput(CI.getPreprocessor(), OS.get(),
CI.getPreprocessorOutputOpts());
}
void PrintPreambleAction::ExecuteAction() {
switch (getCurrentFileKind().getLanguage()) {
case Language::C:
case Language::CXX:
case Language::ObjC:
case Language::ObjCXX:
case Language::OpenCL:
case Language::CUDA:
case Language::HIP:
break;
case Language::Unknown:
case Language::Asm:
case Language::LLVM_IR:
case Language::RenderScript:
// We can't do anything with these.
return;
}
// We don't expect to find any #include directives in a preprocessed input.
if (getCurrentFileKind().isPreprocessed())
return;
CompilerInstance &CI = getCompilerInstance();
auto Buffer = CI.getFileManager().getBufferForFile(getCurrentFile());
if (Buffer) {
unsigned Preamble =
Lexer::ComputePreamble((*Buffer)->getBuffer(), CI.getLangOpts()).Size;
llvm::outs().write((*Buffer)->getBufferStart(), Preamble);
}
}
void DumpCompilerOptionsAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
std::unique_ptr<raw_ostream> OSP =
CI.createDefaultOutputFile(false, getCurrentFile());
if (!OSP)
return;
raw_ostream &OS = *OSP;
const Preprocessor &PP = CI.getPreprocessor();
const LangOptions &LangOpts = PP.getLangOpts();
// FIXME: Rather than manually format the JSON (which is awkward due to
// needing to remove trailing commas), this should make use of a JSON library.
// FIXME: Instead of printing enums as an integral value and specifying the
// type as a separate field, use introspection to print the enumerator.
OS << "{\n";
OS << "\n\"features\" : [\n";
{
llvm::SmallString<128> Str;
#define FEATURE(Name, Predicate) \
("\t{\"" #Name "\" : " + llvm::Twine(Predicate ? "true" : "false") + "},\n") \
.toVector(Str);
#include "clang/Basic/Features.def"
#undef FEATURE
// Remove the newline and comma from the last entry to ensure this remains
// valid JSON.
OS << Str.substr(0, Str.size() - 2);
}
OS << "\n],\n";
OS << "\n\"extensions\" : [\n";
{
llvm::SmallString<128> Str;
#define EXTENSION(Name, Predicate) \
("\t{\"" #Name "\" : " + llvm::Twine(Predicate ? "true" : "false") + "},\n") \
.toVector(Str);
#include "clang/Basic/Features.def"
#undef EXTENSION
// Remove the newline and comma from the last entry to ensure this remains
// valid JSON.
OS << Str.substr(0, Str.size() - 2);
}
OS << "\n]\n";
OS << "}";
}
void PrintDependencyDirectivesSourceMinimizerAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
SourceManager &SM = CI.getPreprocessor().getSourceManager();
const llvm::MemoryBuffer *FromFile = SM.getBuffer(SM.getMainFileID());
llvm::SmallString<1024> Output;
llvm::SmallVector<minimize_source_to_dependency_directives::Token, 32> Toks;
if (minimizeSourceToDependencyDirectives(
FromFile->getBuffer(), Output, Toks, &CI.getDiagnostics(),
SM.getLocForStartOfFile(SM.getMainFileID()))) {
assert(CI.getDiagnostics().hasErrorOccurred() &&
"no errors reported for failure");
// Preprocess the source when verifying the diagnostics to capture the
// 'expected' comments.
if (CI.getDiagnosticOpts().VerifyDiagnostics) {
// Make sure we don't emit new diagnostics!
CI.getDiagnostics().setSuppressAllDiagnostics(true);
Preprocessor &PP = getCompilerInstance().getPreprocessor();
PP.EnterMainSourceFile();
Token Tok;
do {
PP.Lex(Tok);
} while (Tok.isNot(tok::eof));
}
return;
}
llvm::outs() << Output;
}
|