-
Notifications
You must be signed in to change notification settings - Fork 10.4k
/
Copy pathModuleInterfacePrinting.cpp
1162 lines (1017 loc) · 39.6 KB
/
ModuleInterfacePrinting.cpp
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
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
//===--- ModuleInterfacePrinting.cpp - Routines to print module interface -===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#include "swift/IDE/ModuleInterfacePrinting.h"
#include "swift/IDE/Utils.h"
#include "swift/Sema/IDETypeChecking.h"
#include "swift/AST/ASTContext.h"
#include "swift/AST/ASTDemangler.h"
#include "swift/AST/ASTPrinter.h"
#include "swift/AST/Decl.h"
#include "swift/AST/Module.h"
#include "swift/AST/NameLookup.h"
#include "swift/AST/PrintOptions.h"
#include "swift/AST/SourceFile.h"
#include "swift/Basic/PrimitiveParsing.h"
#include "swift/Basic/Unicode.h"
#include "swift/ClangImporter/ClangImporter.h"
#include "swift/ClangImporter/ClangModule.h"
#include "swift/Parse/Token.h"
#include "swift/Subsystems.h"
#include "swift/Serialization/SerializedModuleLoader.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclObjC.h"
#include "clang/Basic/Module.h"
#include "clang/Lex/Lexer.h"
#include "clang/Lex/MacroInfo.h"
#include "clang/Lex/Preprocessor.h"
#include <algorithm>
#include <memory>
#include <queue>
#include <string>
#include <utility>
#include <vector>
using namespace swift;
namespace {
/// Prints regular comments from clang module headers.
class ClangCommentPrinter : public ASTPrinter {
public:
ClangCommentPrinter(ASTPrinter &OtherPrinter, ClangModuleLoader &ClangLoader)
: OtherPrinter(OtherPrinter),
ClangLoader(ClangLoader) {}
private:
void printDeclPre(const Decl *D,
llvm::Optional<BracketOptions> Bracket) override;
void printDeclPost(const Decl *D,
llvm::Optional<BracketOptions> Bracket) override;
void avoidPrintDeclPost(const Decl *D) override;
// Forwarding implementations.
void printText(StringRef Text) override {
return OtherPrinter.printText(Text);
}
void printDeclLoc(const Decl *D) override {
return OtherPrinter.printDeclLoc(D);
}
void printDeclNameEndLoc(const Decl *D) override {
return OtherPrinter.printDeclNameEndLoc(D);
}
void printDeclNameOrSignatureEndLoc(const Decl *D) override {
return OtherPrinter.printDeclNameOrSignatureEndLoc(D);
}
void printTypePre(const TypeLoc &TL) override {
return OtherPrinter.printTypePre(TL);
}
void printTypePost(const TypeLoc &TL) override {
return OtherPrinter.printTypePost(TL);
}
void printTypeRef(Type T, const TypeDecl *TD, Identifier Name,
PrintNameContext NameContext) override {
return OtherPrinter.printTypeRef(T, TD, Name, NameContext);
}
void printModuleRef(ModuleEntity Mod, Identifier Name) override {
return OtherPrinter.printModuleRef(Mod, Name);
}
void printSynthesizedExtensionPre(
const ExtensionDecl *ED, TypeOrExtensionDecl Target,
llvm::Optional<BracketOptions> Bracket) override {
return OtherPrinter.printSynthesizedExtensionPre(ED, Target, Bracket);
}
void printSynthesizedExtensionPost(
const ExtensionDecl *ED, TypeOrExtensionDecl Target,
llvm::Optional<BracketOptions> Bracket) override {
return OtherPrinter.printSynthesizedExtensionPost(ED, Target, Bracket);
}
void printStructurePre(PrintStructureKind Kind, const Decl *D) override {
return OtherPrinter.printStructurePre(Kind, D);
}
void printStructurePost(PrintStructureKind Kind, const Decl *D) override {
return OtherPrinter.printStructurePost(Kind, D);
}
void printNamePre(PrintNameContext Context) override {
return OtherPrinter.printNamePre(Context);
}
void printNamePost(PrintNameContext Context) override {
return OtherPrinter.printNamePost(Context);
}
// Prints regular comments of the header the clang node comes from, until
// the location of the node. Keeps track of the comments that were printed
// from the file and resumes printing for the next node from the same file.
// This expects to get passed clang nodes in source-order (at least within the
// same header).
void printCommentsUntil(ClangNode Node);
void printComment(StringRef Text, unsigned StartLocCol);
bool isDocumentationComment(clang::SourceLocation CommentLoc,
ClangNode Node) const;
unsigned getResumeOffset(clang::FileID FID) const {
auto OffsI = ResumeOffsets.find(FID);
if (OffsI != ResumeOffsets.end())
return OffsI->second;
return 0;
}
void setResumeOffset(clang::FileID FID, unsigned Offset) {
ResumeOffsets[FID] = Offset;
}
bool shouldPrintNewLineBefore(ClangNode Node) const;
void updateLastEntityLine(clang::SourceLocation Loc);
void updateLastEntityLine(clang::FileID FID, unsigned LineNo);
ASTPrinter &OtherPrinter;
ClangModuleLoader &ClangLoader;
llvm::DenseMap<clang::FileID, unsigned> ResumeOffsets;
SmallVector<StringRef, 2> PendingComments;
llvm::DenseMap<clang::FileID, unsigned> LastEntityLines;
};
} // unnamed namespace
static const clang::Module *
getUnderlyingClangModuleForImport(ImportDecl *Import) {
if (auto *ClangMod = Import->getClangModule())
return ClangMod;
if (auto Mod = Import->getModule())
if (auto *ClangMod = Mod->findUnderlyingClangModule())
return ClangMod;
return nullptr;
}
static void printTypeNameToString(Type Ty, std::string &Text) {
SmallString<128> Buffer;
llvm::raw_svector_ostream OS(Buffer);
Ty->print(OS);
Text = std::string(OS.str());
}
bool swift::ide::
printTypeInterface(ModuleDecl *M, Type Ty, ASTPrinter &Printer,
std::string &TypeName, std::string &Error) {
if (!Ty) {
if (Error.empty())
Error = "type cannot be null.";
return true;
}
Ty = Ty->getRValueType();
if (auto ND = Ty->getNominalOrBoundGenericNominal()) {
PrintOptions Options = PrintOptions::printTypeInterface(
Ty.getPointer(),
Ty->getASTContext().TypeCheckerOpts.PrintFullConvention);
ND->print(Printer, Options);
printTypeNameToString(Ty, TypeName);
return false;
}
Error = "cannot find declaration of type.";
return true;
}
bool swift::ide::
printTypeInterface(ModuleDecl *M, StringRef TypeUSR, ASTPrinter &Printer,
std::string &TypeName, std::string &Error) {
return printTypeInterface(M, Demangle::getTypeForMangling(M->getASTContext(),
TypeUSR),
Printer, TypeName, Error);
}
static void adjustPrintOptions(PrintOptions &AdjustedOptions) {
// Don't print empty curly braces while printing the module interface.
AdjustedOptions.FunctionDefinitions = false;
AdjustedOptions.PrintGetSetOnRWProperties = false;
// Print var declarations separately, one variable per decl.
AdjustedOptions.ExplodePatternBindingDecls = true;
AdjustedOptions.VarInitializers = false;
}
void swift::ide::collectModuleGroups(ModuleDecl *M,
SmallVectorImpl<StringRef> &Into) {
for (auto File : M->getFiles()) {
File->collectAllGroups(Into);
}
std::sort(Into.begin(), Into.end(), [](StringRef L, StringRef R) {
return L.compare_insensitive(R) < 0;
});
}
/// Determine whether the given extension has a Clang node that
/// created it (vs. being a Swift extension).
static bool extensionHasClangNode(ExtensionDecl *ext) {
return static_cast<bool>(swift::ide::extensionGetClangNode(ext));
}
llvm::Optional<StringRef> swift::ide::findGroupNameForUSR(ModuleDecl *M,
StringRef USR) {
for (auto File : M->getTopLevelModule()->getFiles()) {
if (auto Name = File->getGroupNameByUSR(USR)) {
return Name;
}
}
return llvm::None;
}
/// Prints a single decl using the \p Printer and \p Options provided. If
/// \p LeadingComment is non-empty, it will be printed verbatim before the decl
/// and any documentation comment associated with it.
///
/// \returns Whether the given decl was printed.
static bool printModuleInterfaceDecl(Decl *D,
ASTPrinter &Printer,
PrintOptions &Options,
bool PrintSynthesizedExtensions,
StringRef LeadingComment = StringRef()) {
if (!Options.shouldPrint(D)) {
Printer.callAvoidPrintDeclPost(D);
return false;
}
if (auto Ext = dyn_cast<ExtensionDecl>(D)) {
// Clang extensions (categories) are always printed in source order.
// Swift extensions are printed with their associated type unless it's
// a cross-module extension.
if (!extensionHasClangNode(Ext)) {
auto ExtendedNominal = Ext->getExtendedNominal();
if (!ExtendedNominal ||
Ext->getModuleContext() == ExtendedNominal->getModuleContext())
return false;
}
}
std::unique_ptr<SynthesizedExtensionAnalyzer> pAnalyzer;
if (auto NTD = dyn_cast<NominalTypeDecl>(D)) {
if (PrintSynthesizedExtensions) {
pAnalyzer.reset(new SynthesizedExtensionAnalyzer(NTD, Options));
Options.BracketOptions = {
NTD, true, true,
!pAnalyzer->hasMergeGroup(
SynthesizedExtensionAnalyzer::MergeGroupKind::MergeableWithTypeDef
)
};
}
}
if (!LeadingComment.empty() && Options.shouldPrint(D))
Printer << LeadingComment << "\n";
if (D->print(Printer, Options)) {
if (Options.BracketOptions.shouldCloseNominal(D))
Printer << "\n";
Options.BracketOptions = BracketOptions();
if (auto NTD = dyn_cast<NominalTypeDecl>(D)) {
std::queue<NominalTypeDecl *> SubDecls{{NTD}};
while (!SubDecls.empty()) {
auto NTD = SubDecls.front();
SubDecls.pop();
// Add sub-types of NTD.
for (auto Sub : NTD->getMembers())
if (auto N = dyn_cast<NominalTypeDecl>(Sub))
SubDecls.push(N);
// Print Ext and add sub-types of Ext.
for (auto Ext : NTD->getExtensions()) {
if (!PrintSynthesizedExtensions) {
if (!Options.shouldPrint(Ext)) {
Printer.callAvoidPrintDeclPost(Ext);
continue;
}
if (extensionHasClangNode(Ext))
continue; // will be printed in its source location, see above.
Printer << "\n";
if (!LeadingComment.empty())
Printer << LeadingComment << "\n";
Ext->print(Printer, Options);
Printer << "\n";
}
for (auto Sub : Ext->getMembers())
if (auto N = dyn_cast<NominalTypeDecl>(Sub))
SubDecls.push(N);
}
if (!PrintSynthesizedExtensions)
continue;
bool IsTopLevelDecl = D == NTD;
// If printed Decl is the top-level, merge the constraint-free extensions
// into the main body.
if (IsTopLevelDecl) {
// Print the part that should be merged with the type decl.
pAnalyzer->forEachExtensionMergeGroup(
SynthesizedExtensionAnalyzer::MergeGroupKind::MergeableWithTypeDef,
[&](ArrayRef<ExtensionInfo> Decls) {
for (auto ET : Decls) {
Options.BracketOptions = {
ET.Ext, false, Decls.back().Ext == ET.Ext, true
};
if (ET.IsSynthesized)
Options.initForSynthesizedExtension(NTD);
ET.Ext->print(Printer, Options);
if (ET.IsSynthesized)
Options.clearSynthesizedExtension();
if (Options.BracketOptions.shouldCloseExtension(ET.Ext))
Printer << "\n";
}
});
}
// If the printed Decl is not the top-level one, reset analyzer.
if (!IsTopLevelDecl)
pAnalyzer.reset(new SynthesizedExtensionAnalyzer(NTD, Options));
// Print the rest as synthesized extensions.
pAnalyzer->forEachExtensionMergeGroup(
// For top-level decls, only constraint extensions need to be
// printed, since the rest are merged into the main body.
IsTopLevelDecl
? SynthesizedExtensionAnalyzer::MergeGroupKind::UnmergeableWithTypeDef
: SynthesizedExtensionAnalyzer::MergeGroupKind::All,
[&](ArrayRef<ExtensionInfo> Decls) {
// Whether we've started the extension merge group in printing.
bool Opened = false;
for (auto ET : Decls) {
Options.BracketOptions = {
ET.Ext, !Opened, Decls.back().Ext == ET.Ext, true
};
if (Options.BracketOptions.shouldOpenExtension(ET.Ext)) {
Printer << "\n";
if (Options.shouldPrint(ET.Ext) && !LeadingComment.empty())
Printer << LeadingComment << "\n";
}
if (ET.IsSynthesized) {
if (ET.EnablingExt)
Options.initForSynthesizedExtension(ET.EnablingExt);
else
Options.initForSynthesizedExtension(NTD);
}
// Set opened if we actually printed this extension.
Opened |= ET.Ext->print(Printer, Options);
if (ET.IsSynthesized)
Options.clearSynthesizedExtension();
if (Options.BracketOptions.shouldCloseExtension(ET.Ext)) {
Printer << "\n";
}
}
});
Options.BracketOptions = BracketOptions();
}
}
return true;
}
return false;
}
/// Sorts import declarations for display.
static bool compareImports(ImportDecl *LHS, ImportDecl *RHS) {
return LHS->getImportPath() < RHS->getImportPath();
}
/// Sorts Swift declarations for display.
static bool compareSwiftDecls(Decl *LHS, Decl *RHS) {
auto *LHSValue = dyn_cast<ValueDecl>(LHS);
auto *RHSValue = dyn_cast<ValueDecl>(RHS);
if (LHSValue && RHSValue) {
auto LHSName = LHSValue->getBaseName();
auto RHSName = RHSValue->getBaseName();
if (int Ret = LHSName.compare(RHSName))
return Ret < 0;
// FIXME: not sufficient to establish a total order for overloaded decls.
}
return LHS->getKind() < RHS->getKind();
}
static std::pair<ArrayRef<Decl*>, ArrayRef<Decl*>>
getDeclsFromCrossImportOverlay(ModuleDecl *Overlay, ModuleDecl *Declaring,
SmallVectorImpl<Decl *> &Decls,
AccessLevel AccessFilter) {
swift::getTopLevelDeclsForDisplay(Overlay, Decls);
// Collect the imports of the underlying module so we can filter them out.
SmallPtrSet<ModuleDecl *, 8> PrevImported;
SmallVector<Decl*, 1> DeclaringDecls;
swift::getTopLevelDeclsForDisplay(Declaring, DeclaringDecls);
for (auto *D: DeclaringDecls) {
if (auto *ID = dyn_cast<ImportDecl>(D))
PrevImported.insert(ID->getModule());
}
// Filter out inaccessible decls and any imports of, or shared with the
// underlying module.
auto NewEnd = std::partition(Decls.begin(), Decls.end(), [&](Decl *D) {
if (auto *ID = dyn_cast<ImportDecl>(D)) {
ModuleDecl *Imported = ID->getModule();
if (!Imported)
return true;
// Ignore imports of the underlying module, or any cross-import
// that would map back to it.
if (Imported == Declaring || Imported->isCrossImportOverlayOf(Declaring))
return false;
// Ignore an imports of modules also imported by the underlying module.
if (PrevImported.contains(Imported))
return false;
}
if (auto *VD = dyn_cast<ValueDecl>(D)) {
if (AccessFilter > AccessLevel::Private &&
VD->getFormalAccess() < AccessFilter)
return false;
}
return true;
});
if (NewEnd != Decls.end())
Decls.erase(NewEnd, Decls.end());
// Separate out the import declarations and sort
MutableArrayRef<Decl*> Imports, Remainder;
auto ImportsEnd = std::partition(Decls.begin(), Decls.end(), [](Decl *D) {
return isa<ImportDecl>(D);
});
if (ImportsEnd != Decls.begin()) {
Imports = {Decls.begin(), ImportsEnd};
Remainder = {ImportsEnd, Decls.end()};
std::sort(Imports.begin(), Imports.end(), [](Decl *LHS, Decl *RHS) {
return compareImports(cast<ImportDecl>(LHS), cast<ImportDecl>(RHS));
});
} else {
Remainder = Decls;
}
std::sort(Remainder.begin(), Remainder.end(), compareSwiftDecls);
return {Imports, Remainder};
}
static void printCrossImportOverlays(ModuleDecl *Declaring, ASTContext &Ctx,
ASTPrinter &Printer,
PrintOptions Options,
bool PrintSynthesizedExtensions) {
SmallVector<Decl *, 1> OverlayDecls;
SmallVector<Identifier, 1> Bystanders;
auto PrintDecl = [&](Decl *D, StringRef LeadingComment = StringRef()) {
return printModuleInterfaceDecl(D, Printer, Options,
PrintSynthesizedExtensions,
LeadingComment);
};
SmallVector<ModuleDecl *, 1> OverlayModules;
Declaring->findDeclaredCrossImportOverlaysTransitive(OverlayModules);
std::sort(OverlayModules.begin(), OverlayModules.end(),
[](ModuleDecl *LHS, ModuleDecl *RHS) {
return LHS->getNameStr() < RHS->getNameStr();
});
for (auto *Overlay: OverlayModules) {
OverlayDecls.clear();
auto DeclLists = getDeclsFromCrossImportOverlay(Overlay, Declaring,
OverlayDecls,
Options.AccessFilter);
// Ignore overlays without any decls
if (OverlayDecls.empty())
continue;
Bystanders.clear();
auto BystandersValid =
Overlay->getRequiredBystandersIfCrossImportOverlay(Declaring, Bystanders);
// Ignore badly formed overlays that don't import their declaring module.
if (!BystandersValid)
continue;
std::sort(Bystanders.begin(), Bystanders.end(),
[](Identifier LHS, Identifier RHS) {
return LHS.str() < RHS.str();
});
std::string BystanderList;
for (size_t I: range(Bystanders.size())) {
if (I == Bystanders.size() - 1) {
if (I != 0)
BystanderList += " and ";
} else if (I != 0) {
BystanderList += ", ";
}
BystanderList += Bystanders[I].str();
}
Printer << "\n// MARK: - " << BystanderList << " Additions\n\n";
for (auto *Import : DeclLists.first)
PrintDecl(Import);
Printer << "\n";
std::string PerDeclComment = "// Available when " + BystanderList;
PerDeclComment += Bystanders.size() == 1 ? " is" : " are";
PerDeclComment += " imported with " + Declaring->getNameStr().str();
for (auto *D : DeclLists.second) {
if (PrintDecl(D, PerDeclComment))
Printer << "\n";
}
}
}
void swift::ide::printModuleInterface(
ModuleDecl *TargetMod,
ArrayRef<StringRef> GroupNames,
ModuleTraversalOptions TraversalOptions,
ASTPrinter &Printer,
const PrintOptions &Options,
const bool PrintSynthesizedExtensions) {
// Clang submodules aren't handled well by `getDisplayDecls()` (no decls are
// returned), so map them to their top-level module and filter out the extra
// results below.
const clang::Module *TargetClangMod = TargetMod->findUnderlyingClangModule();
ModuleDecl *TopLevelMod = TargetMod->getTopLevelModule();
bool IsSubmodule = TargetMod != TopLevelMod;
auto &SwiftContext = TopLevelMod->getASTContext();
auto &Importer =
static_cast<ClangImporter &>(*SwiftContext.getClangModuleLoader());
auto AdjustedOptions = Options;
adjustPrintOptions(AdjustedOptions);
SmallVector<Decl *, 1> Decls;
swift::getTopLevelDeclsForDisplay(TopLevelMod, Decls);
SmallVector<ImportDecl *, 1> ImportDecls;
llvm::DenseSet<const clang::Module *> ClangModulesForImports;
SmallVector<Decl *, 1> SwiftDecls;
llvm::DenseMap<const clang::Module *,
SmallVector<std::pair<Decl *, clang::SourceLocation>, 1>>
ClangDecls;
// If we're printing recursively, find all of the submodules to print.
if (TargetClangMod) {
if (TraversalOptions) {
SmallVector<const clang::Module *, 8> Worklist;
SmallPtrSet<const clang::Module *, 8> Visited;
Worklist.push_back(TargetClangMod);
Visited.insert(TargetClangMod);
while (!Worklist.empty()) {
const clang::Module *CM = Worklist.pop_back_val();
if (!(TraversalOptions & ModuleTraversal::VisitHidden) &&
CM->IsExplicit)
continue;
ClangDecls.insert({ CM, {} });
// If we're supposed to visit submodules, add them now.
if (TraversalOptions & ModuleTraversal::VisitSubmodules) {
for (auto Sub = CM->submodule_begin(), SubEnd = CM->submodule_end();
Sub != SubEnd; ++Sub) {
if (Visited.insert(*Sub).second)
Worklist.push_back(*Sub);
}
}
}
} else {
ClangDecls.insert({ TargetClangMod, {} });
}
}
// Collect those submodules that are actually imported but have no import
// decls in the module.
llvm::SmallPtrSet<const clang::Module *, 16> NoImportSubModules;
if (TargetClangMod) {
// Assume all submodules are missing.
for (auto It = TargetClangMod->submodule_begin();
It != TargetClangMod->submodule_end(); ++It) {
NoImportSubModules.insert(*It);
}
}
llvm::StringMap<std::vector<Decl*>> FileRangedDecls;
// Separate the declarations that we are going to print into different
// buckets.
for (Decl *D : Decls) {
// Skip declarations that are not accessible.
if (auto *VD = dyn_cast<ValueDecl>(D)) {
if (Options.AccessFilter > AccessLevel::Private &&
VD->getFormalAccess() < Options.AccessFilter)
continue;
}
auto ShouldPrintImport = [&](ImportDecl *ImportD) -> bool {
if (ImportD->getAttrs().hasAttribute<ImplementationOnlyAttr>())
return false;
if (!TargetClangMod)
return true;
if (ImportD->getModule() == TargetMod)
return false;
auto ImportedMod = ImportD->getClangModule();
if (!ImportedMod)
return true;
if (!ImportedMod->isSubModule())
return true;
if (ImportedMod == TargetClangMod)
return false;
return ImportedMod->isSubModuleOf(TargetClangMod);
};
if (auto ID = dyn_cast<ImportDecl>(D)) {
if (ShouldPrintImport(ID)) {
if (ID->getClangModule())
// Erase those submodules that are not missing.
NoImportSubModules.erase(ID->getClangModule());
if (ID->getImportKind() == ImportKind::Module) {
// Make sure we don't print duplicate imports, due to getting imports
// for both a clang module and its overlay.
if (auto *ClangMod = getUnderlyingClangModuleForImport(ID)) {
auto P = ClangModulesForImports.insert(ClangMod);
bool IsNew = P.second;
if (!IsNew)
continue;
}
}
ImportDecls.push_back(ID);
}
continue;
}
auto addToClangDecls = [&](Decl *D, ClangNode CN) {
assert(CN && "No Clang node here");
clang::SourceLocation Loc = CN.getLocation();
auto *OwningModule = Importer.getClangOwningModule(CN);
auto I = ClangDecls.find(OwningModule);
if (I != ClangDecls.end()) {
I->second.push_back({ D, Loc });
}
};
if (auto clangNode = getEffectiveClangNode(D)) {
if (auto namespaceDecl =
dyn_cast_or_null<clang::NamespaceDecl>(clangNode.getAsDecl())) {
// An imported namespace decl will contain members from all redecls, so
// make sure we add all the redecls.
for (auto redecl : namespaceDecl->redecls()) {
// Namespace redecls may exist across mutliple modules. We want to
// add the decl "D" to every module that has a redecl. But we only
// want to add "D" once to prevent duplicate printing.
clang::SourceLocation loc = redecl->getLocation();
auto *owningModule = Importer.getClangOwningModule(redecl);
auto found = ClangDecls.find(owningModule);
if (found != ClangDecls.end() &&
// Don't re-add this decl if it already exists for "OwningModule".
llvm::find_if(found->second, [D](auto p) {
return p.first == D;
}) == found->second.end()) {
found->second.push_back({D, loc});
}
}
} else {
addToClangDecls(D, clangNode);
}
continue;
}
// If we have an extension containing globals imported as members,
// use the first member as the Clang node.
if (auto Ext = dyn_cast<ExtensionDecl>(D)) {
if (extensionHasClangNode(Ext)) {
addToClangDecls(Ext, extensionGetClangNode(Ext));
continue;
}
}
if (!IsSubmodule) {
// If group name is given and the decl does not belong to the group, skip it.
if (!GroupNames.empty()){
if (auto TargetGroup = D->getGroupName()) {
if (std::find(GroupNames.begin(), GroupNames.end(),
TargetGroup.value()) != GroupNames.end()) {
FileRangedDecls.insert({
D->getSourceFileName().value(),
std::vector<Decl*>()
}).first->getValue().push_back(D);
}
}
continue;
}
// Add Swift decls if we are printing the top-level module.
SwiftDecls.push_back(D);
}
}
if (!GroupNames.empty()) {
assert(SwiftDecls.empty());
for (auto &Entry : FileRangedDecls) {
auto &DeclsInFile = Entry.getValue();
std::sort(DeclsInFile.begin(), DeclsInFile.end(),
[](Decl* LHS, Decl *RHS) {
assert(LHS->getSourceOrder().has_value());
assert(RHS->getSourceOrder().has_value());
return LHS->getSourceOrder().value() <
RHS->getSourceOrder().value();
});
for (auto D : DeclsInFile) {
SwiftDecls.push_back(D);
}
}
}
// Create the missing import decls and add to the collector.
for (auto *SubMod : NoImportSubModules) {
ImportDecls.push_back(createImportDecl(TopLevelMod->getASTContext(),
TopLevelMod, SubMod, {}));
}
// Sort imported clang declarations in source order *within a submodule*.
auto &ClangSourceManager = Importer.getClangASTContext().getSourceManager();
for (auto &P : ClangDecls) {
std::stable_sort(P.second.begin(), P.second.end(),
[&](std::pair<Decl *, clang::SourceLocation> LHS,
std::pair<Decl *, clang::SourceLocation> RHS) -> bool {
return ClangSourceManager.isBeforeInTranslationUnit(LHS.second,
RHS.second);
});
}
// Sort Swift declarations so that we print them in a consistent order.
std::sort(ImportDecls.begin(), ImportDecls.end(), compareImports);
// If the group name is specified, we sort them according to their source order,
// which is the order preserved by getTopLevelDecls.
if (GroupNames.empty())
std::stable_sort(SwiftDecls.begin(), SwiftDecls.end(), compareSwiftDecls);
ASTPrinter *PrinterToUse = &Printer;
ClangCommentPrinter RegularCommentPrinter(Printer, Importer);
if (Options.PrintRegularClangComments)
PrinterToUse = &RegularCommentPrinter;
auto PrintDecl = [&](Decl *D) {
return printModuleInterfaceDecl(D, *PrinterToUse, AdjustedOptions,
PrintSynthesizedExtensions);
};
// Imports from the stdlib are internal details that don't need to be exposed.
if (!TargetMod->isStdlibModule()) {
for (auto *D : ImportDecls)
PrintDecl(D);
Printer << "\n";
}
{
using ModuleAndName = std::pair<const clang::Module *, std::string>;
SmallVector<ModuleAndName, 8> ClangModules;
for (auto P : ClangDecls) {
ClangModules.push_back({ P.first, P.first->getFullModuleName() });
}
// Sort modules by name.
std::sort(ClangModules.begin(), ClangModules.end(),
[](const ModuleAndName &LHS, const ModuleAndName &RHS)
-> bool {
return LHS.second < RHS.second;
});
for (auto CM : ClangModules) {
for (auto DeclAndLoc : ClangDecls[CM.first])
PrintDecl(DeclAndLoc.first);
}
}
if (!(TraversalOptions & ModuleTraversal::SkipOverlay) || !TargetClangMod) {
for (auto *D : SwiftDecls) {
if (PrintDecl(D))
Printer << "\n";
}
// If we're printing the entire target module (not specific sub-groups),
// also print the decls from any underscored Swift cross-import overlays it
// is the underlying module of, transitively.
if (GroupNames.empty()) {
printCrossImportOverlays(TargetMod, SwiftContext, *PrinterToUse,
AdjustedOptions, PrintSynthesizedExtensions);
}
}
}
static SourceLoc getDeclStartPosition(SourceFile &File) {
SourceManager &SM = File.getASTContext().SourceMgr;
SourceLoc Winner;
auto tryUpdateStart = [&](SourceLoc Loc) -> bool {
if (Loc.isInvalid())
return false;
if (Winner.isInvalid()) {
Winner = Loc;
return true;
}
if (SM.isBeforeInBuffer(Loc, Winner)) {
Winner = Loc;
return true;
}
return false;
};
for (auto D : File.getTopLevelDecls()) {
if (tryUpdateStart(D->getStartLoc())) {
tryUpdateStart(D->getAttrs().getStartLoc());
auto RawComment = D->getRawComment();
if (!RawComment.isEmpty())
tryUpdateStart(RawComment.Comments.front().Range.getStart());
}
}
return Winner;
}
static void printUntilFirstDeclStarts(SourceFile &File, ASTPrinter &Printer) {
if (!File.getBufferID().has_value())
return;
auto BufferID = *File.getBufferID();
auto &SM = File.getASTContext().SourceMgr;
CharSourceRange TextRange = SM.getRangeForBuffer(BufferID);
auto DeclStartLoc = getDeclStartPosition(File);
if (DeclStartLoc.isValid()) {
TextRange = CharSourceRange(SM, TextRange.getStart(), DeclStartLoc);
}
Printer << SM.extractText(TextRange, BufferID);
}
void swift::ide::printSwiftSourceInterface(SourceFile &File,
ASTPrinter &Printer,
const PrintOptions &Options) {
// We print all comments before the first line of Swift code.
printUntilFirstDeclStarts(File, Printer);
File.print(Printer, Options);
}
static Decl* getTopLevelDecl(Decl *D) {
while (!D->getDeclContext()->isModuleScopeContext()) {
auto *ParentD = D->getDeclContext()->getAsDecl();
if (!ParentD)
break;
D = ParentD;
}
return D;
}
void swift::ide::printHeaderInterface(
StringRef Filename,
ASTContext &Ctx,
ASTPrinter &Printer,
const PrintOptions &Options) {
auto AdjustedOptions = Options;
adjustPrintOptions(AdjustedOptions);
auto &Importer = static_cast<ClangImporter &>(*Ctx.getClangModuleLoader());
auto &ClangSM = Importer.getClangASTContext().getSourceManager();
auto headerFilter = [&](ClangNode ClangN) -> bool {
return true; // no need for filtering.
};
SmallVector<Decl *, 32> ClangDecls;
llvm::SmallPtrSet<Decl *, 32> SeenDecls;
auto headerReceiver = [&](Decl *D) {
if (SeenDecls.insert(getTopLevelDecl(D)).second)
ClangDecls.push_back(D);
};
Importer.lookupDeclsFromHeader(Filename, headerFilter, headerReceiver);
// Sort imported declarations in source order.
std::sort(ClangDecls.begin(), ClangDecls.end(),
[&](Decl *LHS, Decl *RHS) -> bool {
return ClangSM.isBeforeInTranslationUnit(
getEffectiveClangNode(LHS).getLocation(),
getEffectiveClangNode(RHS).getLocation());
});
ASTPrinter *PrinterToUse = &Printer;
ClangCommentPrinter RegularCommentPrinter(Printer, Importer);
if (Options.PrintRegularClangComments)
PrinterToUse = &RegularCommentPrinter;
for (auto *D : ClangDecls) {
// Even though the corresponding clang decl should be top-level, its
// equivalent Swift decl may not be. E.g. a top-level function may be mapped
// to a property accessor in Swift.
D = getTopLevelDecl(D);
ASTPrinter &Printer = *PrinterToUse;
if (!AdjustedOptions.shouldPrint(D)) {
Printer.callAvoidPrintDeclPost(D);
continue;
}
if (D->print(Printer, AdjustedOptions))
Printer << "\n";
}
}
void ClangCommentPrinter::avoidPrintDeclPost(const Decl *D) {
auto CD = D->getClangDecl();
if (!CD)
return;
const auto &Ctx = ClangLoader.getClangASTContext();
const auto &SM = Ctx.getSourceManager();
auto EndLoc = CD->getSourceRange().getEnd();
if (EndLoc.isInvalid())
return;
clang::FileID FID = SM.getFileID(EndLoc);
if (FID.isInvalid())
return;
auto Loc = EndLoc;
for (unsigned Line = SM.getSpellingLineNumber(EndLoc);
Loc.isValid() && SM.getSpellingLineNumber(Loc) == Line;
Loc = Loc.getLocWithOffset(1));
if (Loc.isInvalid())
return;
if (SM.getFileOffset(Loc) > getResumeOffset(FID))
setResumeOffset(FID, SM.getFileOffset(Loc));
}
void ClangCommentPrinter::printDeclPre(const Decl *D,
llvm::Optional<BracketOptions> Bracket) {
// Skip parameters, since we do not gracefully handle nested declarations on a
// single line.
// FIXME: we should fix that, since it also affects struct members, etc.
if (!isa<ParamDecl>(D)) {
if (auto ClangN = swift::ide::getEffectiveClangNode(D)) {
printCommentsUntil(ClangN);
if (shouldPrintNewLineBefore(ClangN)) {
*this << "\n";
printIndent();
}
updateLastEntityLine(ClangN.getSourceRange().getBegin());
}
}
return OtherPrinter.printDeclPre(D, Bracket);
}
void ClangCommentPrinter::printDeclPost(
const Decl *D, llvm::Optional<BracketOptions> Bracket) {
OtherPrinter.printDeclPost(D, Bracket);
// Skip parameters; see printDeclPre().
if (isa<ParamDecl>(D))
return;
for (auto CommentText : PendingComments) {
*this << " " << unicode::sanitizeUTF8(CommentText);
}
PendingComments.clear();
if (auto ClangN = swift::ide::getEffectiveClangNode(D))
updateLastEntityLine(ClangN.getSourceRange().getEnd());
}
void ClangCommentPrinter::printCommentsUntil(ClangNode Node) {
const auto &Ctx = ClangLoader.getClangASTContext();
const auto &SM = Ctx.getSourceManager();
clang::SourceLocation NodeLoc =
SM.getFileLoc(Node.getSourceRange().getBegin());
if (NodeLoc.isInvalid())
return;
unsigned NodeLineNo = SM.getSpellingLineNumber(NodeLoc);
clang::FileID FID = SM.getFileID(NodeLoc);
if (FID.isInvalid())
return;
clang::SourceLocation FileLoc = SM.getLocForStartOfFile(FID);
StringRef Text = SM.getBufferData(FID);