1 //===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements serialization for Declarations.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "clang/Serialization/ASTWriter.h"
15 #include "ASTCommon.h"
16 #include "clang/AST/DeclCXX.h"
17 #include "clang/AST/DeclContextInternals.h"
18 #include "clang/AST/DeclTemplate.h"
19 #include "clang/AST/DeclVisitor.h"
20 #include "clang/AST/Expr.h"
21 #include "clang/Basic/SourceManager.h"
22 #include "clang/Serialization/ASTReader.h"
23 #include "llvm/ADT/Twine.h"
24 #include "llvm/Bitcode/BitstreamWriter.h"
25 #include "llvm/Support/ErrorHandling.h"
26 using namespace clang;
27 using namespace serialization;
28
29 //===----------------------------------------------------------------------===//
30 // Declaration serialization
31 //===----------------------------------------------------------------------===//
32
33 namespace clang {
34 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> {
35
36 ASTWriter &Writer;
37 ASTContext &Context;
38 typedef ASTWriter::RecordData RecordData;
39 RecordData &Record;
40
41 public:
42 serialization::DeclCode Code;
43 unsigned AbbrevToUse;
44
ASTDeclWriter(ASTWriter & Writer,ASTContext & Context,RecordData & Record)45 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context, RecordData &Record)
46 : Writer(Writer), Context(Context), Record(Record) {
47 }
48
49 void Visit(Decl *D);
50
51 void VisitDecl(Decl *D);
52 void VisitTranslationUnitDecl(TranslationUnitDecl *D);
53 void VisitNamedDecl(NamedDecl *D);
54 void VisitLabelDecl(LabelDecl *LD);
55 void VisitNamespaceDecl(NamespaceDecl *D);
56 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
57 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
58 void VisitTypeDecl(TypeDecl *D);
59 void VisitTypedefNameDecl(TypedefNameDecl *D);
60 void VisitTypedefDecl(TypedefDecl *D);
61 void VisitTypeAliasDecl(TypeAliasDecl *D);
62 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
63 void VisitTagDecl(TagDecl *D);
64 void VisitEnumDecl(EnumDecl *D);
65 void VisitRecordDecl(RecordDecl *D);
66 void VisitCXXRecordDecl(CXXRecordDecl *D);
67 void VisitClassTemplateSpecializationDecl(
68 ClassTemplateSpecializationDecl *D);
69 void VisitClassTemplatePartialSpecializationDecl(
70 ClassTemplatePartialSpecializationDecl *D);
71 void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D);
72 void VisitVarTemplatePartialSpecializationDecl(
73 VarTemplatePartialSpecializationDecl *D);
74 void VisitClassScopeFunctionSpecializationDecl(
75 ClassScopeFunctionSpecializationDecl *D);
76 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
77 void VisitValueDecl(ValueDecl *D);
78 void VisitEnumConstantDecl(EnumConstantDecl *D);
79 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
80 void VisitDeclaratorDecl(DeclaratorDecl *D);
81 void VisitFunctionDecl(FunctionDecl *D);
82 void VisitCXXMethodDecl(CXXMethodDecl *D);
83 void VisitCXXConstructorDecl(CXXConstructorDecl *D);
84 void VisitCXXDestructorDecl(CXXDestructorDecl *D);
85 void VisitCXXConversionDecl(CXXConversionDecl *D);
86 void VisitFieldDecl(FieldDecl *D);
87 void VisitMSPropertyDecl(MSPropertyDecl *D);
88 void VisitIndirectFieldDecl(IndirectFieldDecl *D);
89 void VisitVarDecl(VarDecl *D);
90 void VisitImplicitParamDecl(ImplicitParamDecl *D);
91 void VisitParmVarDecl(ParmVarDecl *D);
92 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
93 void VisitTemplateDecl(TemplateDecl *D);
94 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
95 void VisitClassTemplateDecl(ClassTemplateDecl *D);
96 void VisitVarTemplateDecl(VarTemplateDecl *D);
97 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
98 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
99 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
100 void VisitUsingDecl(UsingDecl *D);
101 void VisitUsingShadowDecl(UsingShadowDecl *D);
102 void VisitLinkageSpecDecl(LinkageSpecDecl *D);
103 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
104 void VisitImportDecl(ImportDecl *D);
105 void VisitAccessSpecDecl(AccessSpecDecl *D);
106 void VisitFriendDecl(FriendDecl *D);
107 void VisitFriendTemplateDecl(FriendTemplateDecl *D);
108 void VisitStaticAssertDecl(StaticAssertDecl *D);
109 void VisitBlockDecl(BlockDecl *D);
110 void VisitCapturedDecl(CapturedDecl *D);
111 void VisitEmptyDecl(EmptyDecl *D);
112
113 void VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset,
114 uint64_t VisibleOffset);
115 template <typename T> void VisitRedeclarable(Redeclarable<T> *D);
116
117
118 // FIXME: Put in the same order is DeclNodes.td?
119 void VisitObjCMethodDecl(ObjCMethodDecl *D);
120 void VisitObjCContainerDecl(ObjCContainerDecl *D);
121 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
122 void VisitObjCIvarDecl(ObjCIvarDecl *D);
123 void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
124 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
125 void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
126 void VisitObjCImplDecl(ObjCImplDecl *D);
127 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
128 void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
129 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
130 void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
131 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
132 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
133
AddFunctionDefinition(const FunctionDecl * FD)134 void AddFunctionDefinition(const FunctionDecl *FD) {
135 assert(FD->doesThisDeclarationHaveABody());
136 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD))
137 Writer.AddCXXCtorInitializers(CD->CtorInitializers,
138 CD->NumCtorInitializers, Record);
139 Writer.AddStmt(FD->getBody());
140 }
141 };
142 }
143
Visit(Decl * D)144 void ASTDeclWriter::Visit(Decl *D) {
145 DeclVisitor<ASTDeclWriter>::Visit(D);
146
147 // Source locations require array (variable-length) abbreviations. The
148 // abbreviation infrastructure requires that arrays are encoded last, so
149 // we handle it here in the case of those classes derived from DeclaratorDecl
150 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)){
151 Writer.AddTypeSourceInfo(DD->getTypeSourceInfo(), Record);
152 }
153
154 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs
155 // have been written. We want it last because we will not read it back when
156 // retrieving it from the AST, we'll just lazily set the offset.
157 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
158 Record.push_back(FD->doesThisDeclarationHaveABody());
159 if (FD->doesThisDeclarationHaveABody())
160 Writer.AddStmt(FD->getBody());
161 }
162 }
163
VisitDecl(Decl * D)164 void ASTDeclWriter::VisitDecl(Decl *D) {
165 Writer.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()), Record);
166 Writer.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()), Record);
167 Record.push_back(D->isInvalidDecl());
168 Record.push_back(D->hasAttrs());
169 if (D->hasAttrs())
170 Writer.WriteAttributes(ArrayRef<const Attr*>(D->getAttrs().begin(),
171 D->getAttrs().size()), Record);
172 Record.push_back(D->isImplicit());
173 Record.push_back(D->isUsed(false));
174 Record.push_back(D->isReferenced());
175 Record.push_back(D->isTopLevelDeclInObjCContainer());
176 Record.push_back(D->getAccess());
177 Record.push_back(D->isModulePrivate());
178 Record.push_back(Writer.inferSubmoduleIDFromLocation(D->getLocation()));
179
180 // If this declaration injected a name into a context different from its
181 // lexical context, and that context is an imported namespace, we need to
182 // update its visible declarations to include this name.
183 //
184 // This happens when we instantiate a class with a friend declaration or a
185 // function with a local extern declaration, for instance.
186 if (D->isOutOfLine()) {
187 auto *DC = D->getDeclContext();
188 while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) {
189 if (!NS->isFromASTFile())
190 break;
191 Writer.AddUpdatedDeclContext(NS->getPrimaryContext());
192 if (!NS->isInlineNamespace())
193 break;
194 DC = NS->getParent();
195 }
196 }
197 }
198
VisitTranslationUnitDecl(TranslationUnitDecl * D)199 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
200 llvm_unreachable("Translation units aren't directly serialized");
201 }
202
VisitNamedDecl(NamedDecl * D)203 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) {
204 VisitDecl(D);
205 Writer.AddDeclarationName(D->getDeclName(), Record);
206 }
207
VisitTypeDecl(TypeDecl * D)208 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) {
209 VisitNamedDecl(D);
210 Writer.AddSourceLocation(D->getLocStart(), Record);
211 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record);
212 }
213
VisitTypedefNameDecl(TypedefNameDecl * D)214 void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) {
215 VisitRedeclarable(D);
216 VisitTypeDecl(D);
217 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record);
218 Record.push_back(D->isModed());
219 if (D->isModed())
220 Writer.AddTypeRef(D->getUnderlyingType(), Record);
221 }
222
VisitTypedefDecl(TypedefDecl * D)223 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) {
224 VisitTypedefNameDecl(D);
225 if (!D->hasAttrs() &&
226 !D->isImplicit() &&
227 !D->isUsed(false) &&
228 D->getFirstDecl() == D->getMostRecentDecl() &&
229 !D->isInvalidDecl() &&
230 !D->isReferenced() &&
231 !D->isTopLevelDeclInObjCContainer() &&
232 D->getAccess() == AS_none &&
233 !D->isModulePrivate() &&
234 D->getDeclName().getNameKind() == DeclarationName::Identifier)
235 AbbrevToUse = Writer.getDeclTypedefAbbrev();
236
237 Code = serialization::DECL_TYPEDEF;
238 }
239
VisitTypeAliasDecl(TypeAliasDecl * D)240 void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) {
241 VisitTypedefNameDecl(D);
242 Code = serialization::DECL_TYPEALIAS;
243 }
244
VisitTagDecl(TagDecl * D)245 void ASTDeclWriter::VisitTagDecl(TagDecl *D) {
246 VisitRedeclarable(D);
247 VisitTypeDecl(D);
248 Record.push_back(D->getIdentifierNamespace());
249 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding
250 Record.push_back(D->isCompleteDefinition());
251 Record.push_back(D->isEmbeddedInDeclarator());
252 Record.push_back(D->isFreeStanding());
253 Record.push_back(D->isCompleteDefinitionRequired());
254 Writer.AddSourceLocation(D->getRBraceLoc(), Record);
255 Record.push_back(D->hasExtInfo());
256 if (D->hasExtInfo())
257 Writer.AddQualifierInfo(*D->getExtInfo(), Record);
258 else if (D->hasDeclaratorForAnonDecl())
259 Writer.AddDeclRef(D->getDeclaratorForAnonDecl(), Record);
260 else
261 Writer.AddDeclRef(D->getTypedefNameForAnonDecl(), Record);
262 }
263
VisitEnumDecl(EnumDecl * D)264 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) {
265 VisitTagDecl(D);
266 Writer.AddTypeSourceInfo(D->getIntegerTypeSourceInfo(), Record);
267 if (!D->getIntegerTypeSourceInfo())
268 Writer.AddTypeRef(D->getIntegerType(), Record);
269 Writer.AddTypeRef(D->getPromotionType(), Record);
270 Record.push_back(D->getNumPositiveBits());
271 Record.push_back(D->getNumNegativeBits());
272 Record.push_back(D->isScoped());
273 Record.push_back(D->isScopedUsingClassTag());
274 Record.push_back(D->isFixed());
275 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) {
276 Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record);
277 Record.push_back(MemberInfo->getTemplateSpecializationKind());
278 Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record);
279 } else {
280 Writer.AddDeclRef(nullptr, Record);
281 }
282
283 if (!D->hasAttrs() &&
284 !D->isImplicit() &&
285 !D->isUsed(false) &&
286 !D->hasExtInfo() &&
287 D->getFirstDecl() == D->getMostRecentDecl() &&
288 !D->isInvalidDecl() &&
289 !D->isReferenced() &&
290 !D->isTopLevelDeclInObjCContainer() &&
291 D->getAccess() == AS_none &&
292 !D->isModulePrivate() &&
293 !CXXRecordDecl::classofKind(D->getKind()) &&
294 !D->getIntegerTypeSourceInfo() &&
295 !D->getMemberSpecializationInfo() &&
296 D->getDeclName().getNameKind() == DeclarationName::Identifier)
297 AbbrevToUse = Writer.getDeclEnumAbbrev();
298
299 Code = serialization::DECL_ENUM;
300 }
301
VisitRecordDecl(RecordDecl * D)302 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) {
303 VisitTagDecl(D);
304 Record.push_back(D->hasFlexibleArrayMember());
305 Record.push_back(D->isAnonymousStructOrUnion());
306 Record.push_back(D->hasObjectMember());
307 Record.push_back(D->hasVolatileMember());
308
309 if (!D->hasAttrs() &&
310 !D->isImplicit() &&
311 !D->isUsed(false) &&
312 !D->hasExtInfo() &&
313 D->getFirstDecl() == D->getMostRecentDecl() &&
314 !D->isInvalidDecl() &&
315 !D->isReferenced() &&
316 !D->isTopLevelDeclInObjCContainer() &&
317 D->getAccess() == AS_none &&
318 !D->isModulePrivate() &&
319 !CXXRecordDecl::classofKind(D->getKind()) &&
320 D->getDeclName().getNameKind() == DeclarationName::Identifier)
321 AbbrevToUse = Writer.getDeclRecordAbbrev();
322
323 Code = serialization::DECL_RECORD;
324 }
325
VisitValueDecl(ValueDecl * D)326 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) {
327 VisitNamedDecl(D);
328 Writer.AddTypeRef(D->getType(), Record);
329 }
330
VisitEnumConstantDecl(EnumConstantDecl * D)331 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) {
332 VisitValueDecl(D);
333 Record.push_back(D->getInitExpr()? 1 : 0);
334 if (D->getInitExpr())
335 Writer.AddStmt(D->getInitExpr());
336 Writer.AddAPSInt(D->getInitVal(), Record);
337
338 Code = serialization::DECL_ENUM_CONSTANT;
339 }
340
VisitDeclaratorDecl(DeclaratorDecl * D)341 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) {
342 VisitValueDecl(D);
343 Writer.AddSourceLocation(D->getInnerLocStart(), Record);
344 Record.push_back(D->hasExtInfo());
345 if (D->hasExtInfo())
346 Writer.AddQualifierInfo(*D->getExtInfo(), Record);
347 }
348
VisitFunctionDecl(FunctionDecl * D)349 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) {
350 VisitRedeclarable(D);
351 VisitDeclaratorDecl(D);
352
353 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record);
354 Record.push_back(D->getIdentifierNamespace());
355
356 // FunctionDecl's body is handled last at ASTWriterDecl::Visit,
357 // after everything else is written.
358
359 Record.push_back(D->getStorageClass()); // FIXME: stable encoding
360 Record.push_back(D->IsInline);
361 Record.push_back(D->isInlineSpecified());
362 Record.push_back(D->isVirtualAsWritten());
363 Record.push_back(D->isPure());
364 Record.push_back(D->hasInheritedPrototype());
365 Record.push_back(D->hasWrittenPrototype());
366 Record.push_back(D->isDeletedAsWritten());
367 Record.push_back(D->isTrivial());
368 Record.push_back(D->isDefaulted());
369 Record.push_back(D->isExplicitlyDefaulted());
370 Record.push_back(D->hasImplicitReturnZero());
371 Record.push_back(D->isConstexpr());
372 Record.push_back(D->HasSkippedBody);
373 Record.push_back(D->isLateTemplateParsed());
374 Record.push_back(D->getLinkageInternal());
375 Writer.AddSourceLocation(D->getLocEnd(), Record);
376
377 Record.push_back(D->getTemplatedKind());
378 switch (D->getTemplatedKind()) {
379 case FunctionDecl::TK_NonTemplate:
380 break;
381 case FunctionDecl::TK_FunctionTemplate:
382 Writer.AddDeclRef(D->getDescribedFunctionTemplate(), Record);
383 break;
384 case FunctionDecl::TK_MemberSpecialization: {
385 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo();
386 Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record);
387 Record.push_back(MemberInfo->getTemplateSpecializationKind());
388 Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record);
389 break;
390 }
391 case FunctionDecl::TK_FunctionTemplateSpecialization: {
392 FunctionTemplateSpecializationInfo *
393 FTSInfo = D->getTemplateSpecializationInfo();
394 Writer.AddDeclRef(FTSInfo->getTemplate(), Record);
395 Record.push_back(FTSInfo->getTemplateSpecializationKind());
396
397 // Template arguments.
398 Writer.AddTemplateArgumentList(FTSInfo->TemplateArguments, Record);
399
400 // Template args as written.
401 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr);
402 if (FTSInfo->TemplateArgumentsAsWritten) {
403 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs);
404 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs;
405 i!=e; ++i)
406 Writer.AddTemplateArgumentLoc((*FTSInfo->TemplateArgumentsAsWritten)[i],
407 Record);
408 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc,
409 Record);
410 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc,
411 Record);
412 }
413
414 Writer.AddSourceLocation(FTSInfo->getPointOfInstantiation(), Record);
415
416 if (D->isCanonicalDecl()) {
417 // Write the template that contains the specializations set. We will
418 // add a FunctionTemplateSpecializationInfo to it when reading.
419 Writer.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl(), Record);
420 }
421 break;
422 }
423 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
424 DependentFunctionTemplateSpecializationInfo *
425 DFTSInfo = D->getDependentSpecializationInfo();
426
427 // Templates.
428 Record.push_back(DFTSInfo->getNumTemplates());
429 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i)
430 Writer.AddDeclRef(DFTSInfo->getTemplate(i), Record);
431
432 // Templates args.
433 Record.push_back(DFTSInfo->getNumTemplateArgs());
434 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i)
435 Writer.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i), Record);
436 Writer.AddSourceLocation(DFTSInfo->getLAngleLoc(), Record);
437 Writer.AddSourceLocation(DFTSInfo->getRAngleLoc(), Record);
438 break;
439 }
440 }
441
442 Record.push_back(D->param_size());
443 for (auto P : D->params())
444 Writer.AddDeclRef(P, Record);
445 Code = serialization::DECL_FUNCTION;
446 }
447
VisitObjCMethodDecl(ObjCMethodDecl * D)448 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
449 VisitNamedDecl(D);
450 // FIXME: convert to LazyStmtPtr?
451 // Unlike C/C++, method bodies will never be in header files.
452 bool HasBodyStuff = D->getBody() != nullptr ||
453 D->getSelfDecl() != nullptr || D->getCmdDecl() != nullptr;
454 Record.push_back(HasBodyStuff);
455 if (HasBodyStuff) {
456 Writer.AddStmt(D->getBody());
457 Writer.AddDeclRef(D->getSelfDecl(), Record);
458 Writer.AddDeclRef(D->getCmdDecl(), Record);
459 }
460 Record.push_back(D->isInstanceMethod());
461 Record.push_back(D->isVariadic());
462 Record.push_back(D->isPropertyAccessor());
463 Record.push_back(D->isDefined());
464 Record.push_back(D->IsOverriding);
465 Record.push_back(D->HasSkippedBody);
466
467 Record.push_back(D->IsRedeclaration);
468 Record.push_back(D->HasRedeclaration);
469 if (D->HasRedeclaration) {
470 assert(Context.getObjCMethodRedeclaration(D));
471 Writer.AddDeclRef(Context.getObjCMethodRedeclaration(D), Record);
472 }
473
474 // FIXME: stable encoding for @required/@optional
475 Record.push_back(D->getImplementationControl());
476 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway
477 Record.push_back(D->getObjCDeclQualifier());
478 Record.push_back(D->hasRelatedResultType());
479 Writer.AddTypeRef(D->getReturnType(), Record);
480 Writer.AddTypeSourceInfo(D->getReturnTypeSourceInfo(), Record);
481 Writer.AddSourceLocation(D->getLocEnd(), Record);
482 Record.push_back(D->param_size());
483 for (const auto *P : D->params())
484 Writer.AddDeclRef(P, Record);
485
486 Record.push_back(D->SelLocsKind);
487 unsigned NumStoredSelLocs = D->getNumStoredSelLocs();
488 SourceLocation *SelLocs = D->getStoredSelLocs();
489 Record.push_back(NumStoredSelLocs);
490 for (unsigned i = 0; i != NumStoredSelLocs; ++i)
491 Writer.AddSourceLocation(SelLocs[i], Record);
492
493 Code = serialization::DECL_OBJC_METHOD;
494 }
495
VisitObjCContainerDecl(ObjCContainerDecl * D)496 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) {
497 VisitNamedDecl(D);
498 Writer.AddSourceLocation(D->getAtStartLoc(), Record);
499 Writer.AddSourceRange(D->getAtEndRange(), Record);
500 // Abstract class (no need to define a stable serialization::DECL code).
501 }
502
VisitObjCInterfaceDecl(ObjCInterfaceDecl * D)503 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
504 VisitRedeclarable(D);
505 VisitObjCContainerDecl(D);
506 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record);
507
508 Record.push_back(D->isThisDeclarationADefinition());
509 if (D->isThisDeclarationADefinition()) {
510 // Write the DefinitionData
511 ObjCInterfaceDecl::DefinitionData &Data = D->data();
512
513 Writer.AddDeclRef(D->getSuperClass(), Record);
514 Writer.AddSourceLocation(D->getSuperClassLoc(), Record);
515 Writer.AddSourceLocation(D->getEndOfDefinitionLoc(), Record);
516 Record.push_back(Data.HasDesignatedInitializers);
517
518 // Write out the protocols that are directly referenced by the @interface.
519 Record.push_back(Data.ReferencedProtocols.size());
520 for (const auto *P : D->protocols())
521 Writer.AddDeclRef(P, Record);
522 for (const auto &PL : D->protocol_locs())
523 Writer.AddSourceLocation(PL, Record);
524
525 // Write out the protocols that are transitively referenced.
526 Record.push_back(Data.AllReferencedProtocols.size());
527 for (ObjCList<ObjCProtocolDecl>::iterator
528 P = Data.AllReferencedProtocols.begin(),
529 PEnd = Data.AllReferencedProtocols.end();
530 P != PEnd; ++P)
531 Writer.AddDeclRef(*P, Record);
532
533
534 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) {
535 // Ensure that we write out the set of categories for this class.
536 Writer.ObjCClassesWithCategories.insert(D);
537
538 // Make sure that the categories get serialized.
539 for (; Cat; Cat = Cat->getNextClassCategoryRaw())
540 (void)Writer.GetDeclRef(Cat);
541 }
542 }
543
544 Code = serialization::DECL_OBJC_INTERFACE;
545 }
546
VisitObjCIvarDecl(ObjCIvarDecl * D)547 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
548 VisitFieldDecl(D);
549 // FIXME: stable encoding for @public/@private/@protected/@package
550 Record.push_back(D->getAccessControl());
551 Record.push_back(D->getSynthesize());
552
553 if (!D->hasAttrs() &&
554 !D->isImplicit() &&
555 !D->isUsed(false) &&
556 !D->isInvalidDecl() &&
557 !D->isReferenced() &&
558 !D->isModulePrivate() &&
559 !D->getBitWidth() &&
560 !D->hasExtInfo() &&
561 D->getDeclName())
562 AbbrevToUse = Writer.getDeclObjCIvarAbbrev();
563
564 Code = serialization::DECL_OBJC_IVAR;
565 }
566
VisitObjCProtocolDecl(ObjCProtocolDecl * D)567 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
568 VisitRedeclarable(D);
569 VisitObjCContainerDecl(D);
570
571 Record.push_back(D->isThisDeclarationADefinition());
572 if (D->isThisDeclarationADefinition()) {
573 Record.push_back(D->protocol_size());
574 for (const auto *I : D->protocols())
575 Writer.AddDeclRef(I, Record);
576 for (const auto &PL : D->protocol_locs())
577 Writer.AddSourceLocation(PL, Record);
578 }
579
580 Code = serialization::DECL_OBJC_PROTOCOL;
581 }
582
VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl * D)583 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) {
584 VisitFieldDecl(D);
585 Code = serialization::DECL_OBJC_AT_DEFS_FIELD;
586 }
587
VisitObjCCategoryDecl(ObjCCategoryDecl * D)588 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
589 VisitObjCContainerDecl(D);
590 Writer.AddSourceLocation(D->getCategoryNameLoc(), Record);
591 Writer.AddSourceLocation(D->getIvarLBraceLoc(), Record);
592 Writer.AddSourceLocation(D->getIvarRBraceLoc(), Record);
593 Writer.AddDeclRef(D->getClassInterface(), Record);
594 Record.push_back(D->protocol_size());
595 for (const auto *I : D->protocols())
596 Writer.AddDeclRef(I, Record);
597 for (const auto &PL : D->protocol_locs())
598 Writer.AddSourceLocation(PL, Record);
599 Code = serialization::DECL_OBJC_CATEGORY;
600 }
601
VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl * D)602 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) {
603 VisitNamedDecl(D);
604 Writer.AddDeclRef(D->getClassInterface(), Record);
605 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS;
606 }
607
VisitObjCPropertyDecl(ObjCPropertyDecl * D)608 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
609 VisitNamedDecl(D);
610 Writer.AddSourceLocation(D->getAtLoc(), Record);
611 Writer.AddSourceLocation(D->getLParenLoc(), Record);
612 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record);
613 // FIXME: stable encoding
614 Record.push_back((unsigned)D->getPropertyAttributes());
615 Record.push_back((unsigned)D->getPropertyAttributesAsWritten());
616 // FIXME: stable encoding
617 Record.push_back((unsigned)D->getPropertyImplementation());
618 Writer.AddDeclarationName(D->getGetterName(), Record);
619 Writer.AddDeclarationName(D->getSetterName(), Record);
620 Writer.AddDeclRef(D->getGetterMethodDecl(), Record);
621 Writer.AddDeclRef(D->getSetterMethodDecl(), Record);
622 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record);
623 Code = serialization::DECL_OBJC_PROPERTY;
624 }
625
VisitObjCImplDecl(ObjCImplDecl * D)626 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) {
627 VisitObjCContainerDecl(D);
628 Writer.AddDeclRef(D->getClassInterface(), Record);
629 // Abstract class (no need to define a stable serialization::DECL code).
630 }
631
VisitObjCCategoryImplDecl(ObjCCategoryImplDecl * D)632 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
633 VisitObjCImplDecl(D);
634 Writer.AddIdentifierRef(D->getIdentifier(), Record);
635 Writer.AddSourceLocation(D->getCategoryNameLoc(), Record);
636 Code = serialization::DECL_OBJC_CATEGORY_IMPL;
637 }
638
VisitObjCImplementationDecl(ObjCImplementationDecl * D)639 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
640 VisitObjCImplDecl(D);
641 Writer.AddDeclRef(D->getSuperClass(), Record);
642 Writer.AddSourceLocation(D->getSuperClassLoc(), Record);
643 Writer.AddSourceLocation(D->getIvarLBraceLoc(), Record);
644 Writer.AddSourceLocation(D->getIvarRBraceLoc(), Record);
645 Record.push_back(D->hasNonZeroConstructors());
646 Record.push_back(D->hasDestructors());
647 Writer.AddCXXCtorInitializers(D->IvarInitializers, D->NumIvarInitializers,
648 Record);
649 Code = serialization::DECL_OBJC_IMPLEMENTATION;
650 }
651
VisitObjCPropertyImplDecl(ObjCPropertyImplDecl * D)652 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
653 VisitDecl(D);
654 Writer.AddSourceLocation(D->getLocStart(), Record);
655 Writer.AddDeclRef(D->getPropertyDecl(), Record);
656 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record);
657 Writer.AddSourceLocation(D->getPropertyIvarDeclLoc(), Record);
658 Writer.AddStmt(D->getGetterCXXConstructor());
659 Writer.AddStmt(D->getSetterCXXAssignment());
660 Code = serialization::DECL_OBJC_PROPERTY_IMPL;
661 }
662
VisitFieldDecl(FieldDecl * D)663 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) {
664 VisitDeclaratorDecl(D);
665 Record.push_back(D->isMutable());
666 if (D->InitializerOrBitWidth.getInt() != ICIS_NoInit ||
667 D->InitializerOrBitWidth.getPointer()) {
668 Record.push_back(D->InitializerOrBitWidth.getInt() + 1);
669 Writer.AddStmt(D->InitializerOrBitWidth.getPointer());
670 } else {
671 Record.push_back(0);
672 }
673 if (!D->getDeclName())
674 Writer.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D), Record);
675
676 if (!D->hasAttrs() &&
677 !D->isImplicit() &&
678 !D->isUsed(false) &&
679 !D->isInvalidDecl() &&
680 !D->isReferenced() &&
681 !D->isTopLevelDeclInObjCContainer() &&
682 !D->isModulePrivate() &&
683 !D->getBitWidth() &&
684 !D->hasInClassInitializer() &&
685 !D->hasExtInfo() &&
686 !ObjCIvarDecl::classofKind(D->getKind()) &&
687 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) &&
688 D->getDeclName())
689 AbbrevToUse = Writer.getDeclFieldAbbrev();
690
691 Code = serialization::DECL_FIELD;
692 }
693
VisitMSPropertyDecl(MSPropertyDecl * D)694 void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) {
695 VisitDeclaratorDecl(D);
696 Writer.AddIdentifierRef(D->getGetterId(), Record);
697 Writer.AddIdentifierRef(D->getSetterId(), Record);
698 Code = serialization::DECL_MS_PROPERTY;
699 }
700
VisitIndirectFieldDecl(IndirectFieldDecl * D)701 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) {
702 VisitValueDecl(D);
703 Record.push_back(D->getChainingSize());
704
705 for (const auto *P : D->chain())
706 Writer.AddDeclRef(P, Record);
707 Code = serialization::DECL_INDIRECTFIELD;
708 }
709
VisitVarDecl(VarDecl * D)710 void ASTDeclWriter::VisitVarDecl(VarDecl *D) {
711 VisitRedeclarable(D);
712 VisitDeclaratorDecl(D);
713 Record.push_back(D->getStorageClass());
714 Record.push_back(D->getTSCSpec());
715 Record.push_back(D->getInitStyle());
716 Record.push_back(D->isExceptionVariable());
717 Record.push_back(D->isNRVOVariable());
718 Record.push_back(D->isCXXForRangeDecl());
719 Record.push_back(D->isARCPseudoStrong());
720 Record.push_back(D->isConstexpr());
721 Record.push_back(D->isInitCapture());
722 Record.push_back(D->isPreviousDeclInSameBlockScope());
723 Record.push_back(D->getLinkageInternal());
724
725 if (D->getInit()) {
726 Record.push_back(!D->isInitKnownICE() ? 1 : (D->isInitICE() ? 3 : 2));
727 Writer.AddStmt(D->getInit());
728 } else {
729 Record.push_back(0);
730 }
731
732 enum {
733 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
734 };
735 if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) {
736 Record.push_back(VarTemplate);
737 Writer.AddDeclRef(TemplD, Record);
738 } else if (MemberSpecializationInfo *SpecInfo
739 = D->getMemberSpecializationInfo()) {
740 Record.push_back(StaticDataMemberSpecialization);
741 Writer.AddDeclRef(SpecInfo->getInstantiatedFrom(), Record);
742 Record.push_back(SpecInfo->getTemplateSpecializationKind());
743 Writer.AddSourceLocation(SpecInfo->getPointOfInstantiation(), Record);
744 } else {
745 Record.push_back(VarNotTemplate);
746 }
747
748 if (!D->hasAttrs() &&
749 !D->isImplicit() &&
750 !D->isUsed(false) &&
751 !D->isInvalidDecl() &&
752 !D->isReferenced() &&
753 !D->isTopLevelDeclInObjCContainer() &&
754 D->getAccess() == AS_none &&
755 !D->isModulePrivate() &&
756 D->getDeclName().getNameKind() == DeclarationName::Identifier &&
757 !D->hasExtInfo() &&
758 D->getFirstDecl() == D->getMostRecentDecl() &&
759 D->getInitStyle() == VarDecl::CInit &&
760 D->getInit() == nullptr &&
761 !isa<ParmVarDecl>(D) &&
762 !isa<VarTemplateSpecializationDecl>(D) &&
763 !D->isConstexpr() &&
764 !D->isInitCapture() &&
765 !D->isPreviousDeclInSameBlockScope() &&
766 !D->getMemberSpecializationInfo())
767 AbbrevToUse = Writer.getDeclVarAbbrev();
768
769 Code = serialization::DECL_VAR;
770 }
771
VisitImplicitParamDecl(ImplicitParamDecl * D)772 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) {
773 VisitVarDecl(D);
774 Code = serialization::DECL_IMPLICIT_PARAM;
775 }
776
VisitParmVarDecl(ParmVarDecl * D)777 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) {
778 VisitVarDecl(D);
779 Record.push_back(D->isObjCMethodParameter());
780 Record.push_back(D->getFunctionScopeDepth());
781 Record.push_back(D->getFunctionScopeIndex());
782 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding
783 Record.push_back(D->isKNRPromoted());
784 Record.push_back(D->hasInheritedDefaultArg());
785 Record.push_back(D->hasUninstantiatedDefaultArg());
786 if (D->hasUninstantiatedDefaultArg())
787 Writer.AddStmt(D->getUninstantiatedDefaultArg());
788 Code = serialization::DECL_PARM_VAR;
789
790 assert(!D->isARCPseudoStrong()); // can be true of ImplicitParamDecl
791
792 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here
793 // we dynamically check for the properties that we optimize for, but don't
794 // know are true of all PARM_VAR_DECLs.
795 if (!D->hasAttrs() &&
796 !D->hasExtInfo() &&
797 !D->isImplicit() &&
798 !D->isUsed(false) &&
799 !D->isInvalidDecl() &&
800 !D->isReferenced() &&
801 D->getAccess() == AS_none &&
802 !D->isModulePrivate() &&
803 D->getStorageClass() == 0 &&
804 D->getInitStyle() == VarDecl::CInit && // Can params have anything else?
805 D->getFunctionScopeDepth() == 0 &&
806 D->getObjCDeclQualifier() == 0 &&
807 !D->isKNRPromoted() &&
808 !D->hasInheritedDefaultArg() &&
809 D->getInit() == nullptr &&
810 !D->hasUninstantiatedDefaultArg()) // No default expr.
811 AbbrevToUse = Writer.getDeclParmVarAbbrev();
812
813 // Check things we know are true of *every* PARM_VAR_DECL, which is more than
814 // just us assuming it.
815 assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS");
816 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private");
817 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var");
818 assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl");
819 assert(!D->isStaticDataMember() &&
820 "PARM_VAR_DECL can't be static data member");
821 }
822
VisitFileScopeAsmDecl(FileScopeAsmDecl * D)823 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
824 VisitDecl(D);
825 Writer.AddStmt(D->getAsmString());
826 Writer.AddSourceLocation(D->getRParenLoc(), Record);
827 Code = serialization::DECL_FILE_SCOPE_ASM;
828 }
829
VisitEmptyDecl(EmptyDecl * D)830 void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) {
831 VisitDecl(D);
832 Code = serialization::DECL_EMPTY;
833 }
834
VisitBlockDecl(BlockDecl * D)835 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) {
836 VisitDecl(D);
837 Writer.AddStmt(D->getBody());
838 Writer.AddTypeSourceInfo(D->getSignatureAsWritten(), Record);
839 Record.push_back(D->param_size());
840 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end();
841 P != PEnd; ++P)
842 Writer.AddDeclRef(*P, Record);
843 Record.push_back(D->isVariadic());
844 Record.push_back(D->blockMissingReturnType());
845 Record.push_back(D->isConversionFromLambda());
846 Record.push_back(D->capturesCXXThis());
847 Record.push_back(D->getNumCaptures());
848 for (const auto &capture : D->captures()) {
849 Writer.AddDeclRef(capture.getVariable(), Record);
850
851 unsigned flags = 0;
852 if (capture.isByRef()) flags |= 1;
853 if (capture.isNested()) flags |= 2;
854 if (capture.hasCopyExpr()) flags |= 4;
855 Record.push_back(flags);
856
857 if (capture.hasCopyExpr()) Writer.AddStmt(capture.getCopyExpr());
858 }
859
860 Code = serialization::DECL_BLOCK;
861 }
862
VisitCapturedDecl(CapturedDecl * CD)863 void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) {
864 Record.push_back(CD->getNumParams());
865 VisitDecl(CD);
866 Record.push_back(CD->getContextParamPosition());
867 Record.push_back(CD->isNothrow() ? 1 : 0);
868 // Body is stored by VisitCapturedStmt.
869 for (unsigned I = 0; I < CD->getNumParams(); ++I)
870 Writer.AddDeclRef(CD->getParam(I), Record);
871 Code = serialization::DECL_CAPTURED;
872 }
873
VisitLinkageSpecDecl(LinkageSpecDecl * D)874 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
875 VisitDecl(D);
876 Record.push_back(D->getLanguage());
877 Writer.AddSourceLocation(D->getExternLoc(), Record);
878 Writer.AddSourceLocation(D->getRBraceLoc(), Record);
879 Code = serialization::DECL_LINKAGE_SPEC;
880 }
881
VisitLabelDecl(LabelDecl * D)882 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) {
883 VisitNamedDecl(D);
884 Writer.AddSourceLocation(D->getLocStart(), Record);
885 Code = serialization::DECL_LABEL;
886 }
887
888
VisitNamespaceDecl(NamespaceDecl * D)889 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) {
890 VisitRedeclarable(D);
891 VisitNamedDecl(D);
892 Record.push_back(D->isInline());
893 Writer.AddSourceLocation(D->getLocStart(), Record);
894 Writer.AddSourceLocation(D->getRBraceLoc(), Record);
895
896 if (D->isOriginalNamespace())
897 Writer.AddDeclRef(D->getAnonymousNamespace(), Record);
898 Code = serialization::DECL_NAMESPACE;
899
900 if (Writer.hasChain() && !D->isOriginalNamespace() &&
901 D->getOriginalNamespace()->isFromASTFile()) {
902 NamespaceDecl *NS = D->getOriginalNamespace();
903 Writer.AddUpdatedDeclContext(NS);
904
905 // Make sure all visible decls are written. They will be recorded later.
906 if (StoredDeclsMap *Map = NS->buildLookup()) {
907 for (StoredDeclsMap::iterator D = Map->begin(), DEnd = Map->end();
908 D != DEnd; ++D) {
909 DeclContext::lookup_result R = D->second.getLookupResult();
910 for (DeclContext::lookup_iterator I = R.begin(), E = R.end(); I != E;
911 ++I)
912 Writer.GetDeclRef(*I);
913 }
914 }
915 }
916
917 if (Writer.hasChain() && D->isAnonymousNamespace() &&
918 D == D->getMostRecentDecl()) {
919 // This is a most recent reopening of the anonymous namespace. If its parent
920 // is in a previous PCH (or is the TU), mark that parent for update, because
921 // the original namespace always points to the latest re-opening of its
922 // anonymous namespace.
923 Decl *Parent = cast<Decl>(
924 D->getParent()->getRedeclContext()->getPrimaryContext());
925 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) {
926 Writer.DeclUpdates[Parent].push_back(
927 ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D));
928 }
929 }
930 }
931
VisitNamespaceAliasDecl(NamespaceAliasDecl * D)932 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
933 VisitNamedDecl(D);
934 Writer.AddSourceLocation(D->getNamespaceLoc(), Record);
935 Writer.AddSourceLocation(D->getTargetNameLoc(), Record);
936 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record);
937 Writer.AddDeclRef(D->getNamespace(), Record);
938 Code = serialization::DECL_NAMESPACE_ALIAS;
939 }
940
VisitUsingDecl(UsingDecl * D)941 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) {
942 VisitNamedDecl(D);
943 Writer.AddSourceLocation(D->getUsingLoc(), Record);
944 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record);
945 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record);
946 Writer.AddDeclRef(D->FirstUsingShadow.getPointer(), Record);
947 Record.push_back(D->hasTypename());
948 Writer.AddDeclRef(Context.getInstantiatedFromUsingDecl(D), Record);
949 Code = serialization::DECL_USING;
950 }
951
VisitUsingShadowDecl(UsingShadowDecl * D)952 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) {
953 VisitRedeclarable(D);
954 VisitNamedDecl(D);
955 Writer.AddDeclRef(D->getTargetDecl(), Record);
956 Writer.AddDeclRef(D->UsingOrNextShadow, Record);
957 Writer.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D), Record);
958 Code = serialization::DECL_USING_SHADOW;
959 }
960
VisitUsingDirectiveDecl(UsingDirectiveDecl * D)961 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
962 VisitNamedDecl(D);
963 Writer.AddSourceLocation(D->getUsingLoc(), Record);
964 Writer.AddSourceLocation(D->getNamespaceKeyLocation(), Record);
965 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record);
966 Writer.AddDeclRef(D->getNominatedNamespace(), Record);
967 Writer.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()), Record);
968 Code = serialization::DECL_USING_DIRECTIVE;
969 }
970
VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl * D)971 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
972 VisitValueDecl(D);
973 Writer.AddSourceLocation(D->getUsingLoc(), Record);
974 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record);
975 Writer.AddDeclarationNameLoc(D->DNLoc, D->getDeclName(), Record);
976 Code = serialization::DECL_UNRESOLVED_USING_VALUE;
977 }
978
VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl * D)979 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl(
980 UnresolvedUsingTypenameDecl *D) {
981 VisitTypeDecl(D);
982 Writer.AddSourceLocation(D->getTypenameLoc(), Record);
983 Writer.AddNestedNameSpecifierLoc(D->getQualifierLoc(), Record);
984 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME;
985 }
986
VisitCXXRecordDecl(CXXRecordDecl * D)987 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) {
988 VisitRecordDecl(D);
989
990 enum {
991 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
992 };
993 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) {
994 Record.push_back(CXXRecTemplate);
995 Writer.AddDeclRef(TemplD, Record);
996 } else if (MemberSpecializationInfo *MSInfo
997 = D->getMemberSpecializationInfo()) {
998 Record.push_back(CXXRecMemberSpecialization);
999 Writer.AddDeclRef(MSInfo->getInstantiatedFrom(), Record);
1000 Record.push_back(MSInfo->getTemplateSpecializationKind());
1001 Writer.AddSourceLocation(MSInfo->getPointOfInstantiation(), Record);
1002 } else {
1003 Record.push_back(CXXRecNotTemplate);
1004 }
1005
1006 Record.push_back(D->isThisDeclarationADefinition());
1007 if (D->isThisDeclarationADefinition())
1008 Writer.AddCXXDefinitionData(D, Record);
1009
1010 // Store (what we currently believe to be) the key function to avoid
1011 // deserializing every method so we can compute it.
1012 if (D->IsCompleteDefinition)
1013 Writer.AddDeclRef(Context.getCurrentKeyFunction(D), Record);
1014
1015 Code = serialization::DECL_CXX_RECORD;
1016 }
1017
VisitCXXMethodDecl(CXXMethodDecl * D)1018 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) {
1019 VisitFunctionDecl(D);
1020 if (D->isCanonicalDecl()) {
1021 Record.push_back(D->size_overridden_methods());
1022 for (CXXMethodDecl::method_iterator
1023 I = D->begin_overridden_methods(), E = D->end_overridden_methods();
1024 I != E; ++I)
1025 Writer.AddDeclRef(*I, Record);
1026 } else {
1027 // We only need to record overridden methods once for the canonical decl.
1028 Record.push_back(0);
1029 }
1030 Code = serialization::DECL_CXX_METHOD;
1031 }
1032
VisitCXXConstructorDecl(CXXConstructorDecl * D)1033 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
1034 VisitCXXMethodDecl(D);
1035
1036 Writer.AddDeclRef(D->getInheritedConstructor(), Record);
1037 Record.push_back(D->IsExplicitSpecified);
1038 Writer.AddCXXCtorInitializers(D->CtorInitializers, D->NumCtorInitializers,
1039 Record);
1040
1041 Code = serialization::DECL_CXX_CONSTRUCTOR;
1042 }
1043
VisitCXXDestructorDecl(CXXDestructorDecl * D)1044 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
1045 VisitCXXMethodDecl(D);
1046
1047 Writer.AddDeclRef(D->OperatorDelete, Record);
1048
1049 Code = serialization::DECL_CXX_DESTRUCTOR;
1050 }
1051
VisitCXXConversionDecl(CXXConversionDecl * D)1052 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) {
1053 VisitCXXMethodDecl(D);
1054 Record.push_back(D->IsExplicitSpecified);
1055 Code = serialization::DECL_CXX_CONVERSION;
1056 }
1057
VisitImportDecl(ImportDecl * D)1058 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) {
1059 VisitDecl(D);
1060 Record.push_back(Writer.getSubmoduleID(D->getImportedModule()));
1061 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs();
1062 Record.push_back(!IdentifierLocs.empty());
1063 if (IdentifierLocs.empty()) {
1064 Writer.AddSourceLocation(D->getLocEnd(), Record);
1065 Record.push_back(1);
1066 } else {
1067 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I)
1068 Writer.AddSourceLocation(IdentifierLocs[I], Record);
1069 Record.push_back(IdentifierLocs.size());
1070 }
1071 // Note: the number of source locations must always be the last element in
1072 // the record.
1073 Code = serialization::DECL_IMPORT;
1074 }
1075
VisitAccessSpecDecl(AccessSpecDecl * D)1076 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) {
1077 VisitDecl(D);
1078 Writer.AddSourceLocation(D->getColonLoc(), Record);
1079 Code = serialization::DECL_ACCESS_SPEC;
1080 }
1081
VisitFriendDecl(FriendDecl * D)1082 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) {
1083 // Record the number of friend type template parameter lists here
1084 // so as to simplify memory allocation during deserialization.
1085 Record.push_back(D->NumTPLists);
1086 VisitDecl(D);
1087 bool hasFriendDecl = D->Friend.is<NamedDecl*>();
1088 Record.push_back(hasFriendDecl);
1089 if (hasFriendDecl)
1090 Writer.AddDeclRef(D->getFriendDecl(), Record);
1091 else
1092 Writer.AddTypeSourceInfo(D->getFriendType(), Record);
1093 for (unsigned i = 0; i < D->NumTPLists; ++i)
1094 Writer.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i),
1095 Record);
1096 Writer.AddDeclRef(D->getNextFriend(), Record);
1097 Record.push_back(D->UnsupportedFriend);
1098 Writer.AddSourceLocation(D->FriendLoc, Record);
1099 Code = serialization::DECL_FRIEND;
1100 }
1101
VisitFriendTemplateDecl(FriendTemplateDecl * D)1102 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
1103 VisitDecl(D);
1104 Record.push_back(D->getNumTemplateParameters());
1105 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i)
1106 Writer.AddTemplateParameterList(D->getTemplateParameterList(i), Record);
1107 Record.push_back(D->getFriendDecl() != nullptr);
1108 if (D->getFriendDecl())
1109 Writer.AddDeclRef(D->getFriendDecl(), Record);
1110 else
1111 Writer.AddTypeSourceInfo(D->getFriendType(), Record);
1112 Writer.AddSourceLocation(D->getFriendLoc(), Record);
1113 Code = serialization::DECL_FRIEND_TEMPLATE;
1114 }
1115
VisitTemplateDecl(TemplateDecl * D)1116 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) {
1117 VisitNamedDecl(D);
1118
1119 Writer.AddDeclRef(D->getTemplatedDecl(), Record);
1120 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record);
1121 }
1122
VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl * D)1123 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
1124 VisitRedeclarable(D);
1125
1126 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that
1127 // getCommonPtr() can be used while this is still initializing.
1128 if (D->isFirstDecl()) {
1129 // This declaration owns the 'common' pointer, so serialize that data now.
1130 Writer.AddDeclRef(D->getInstantiatedFromMemberTemplate(), Record);
1131 if (D->getInstantiatedFromMemberTemplate())
1132 Record.push_back(D->isMemberSpecialization());
1133 }
1134
1135 VisitTemplateDecl(D);
1136 Record.push_back(D->getIdentifierNamespace());
1137 }
1138
VisitClassTemplateDecl(ClassTemplateDecl * D)1139 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) {
1140 VisitRedeclarableTemplateDecl(D);
1141
1142 if (D->isFirstDecl()) {
1143 typedef llvm::FoldingSetVector<ClassTemplateSpecializationDecl> CTSDSetTy;
1144 CTSDSetTy &CTSDSet = D->getSpecializations();
1145 Record.push_back(CTSDSet.size());
1146 for (CTSDSetTy::iterator I=CTSDSet.begin(), E = CTSDSet.end(); I!=E; ++I) {
1147 assert(I->isCanonicalDecl() && "Expected only canonical decls in set");
1148 Writer.AddDeclRef(&*I, Record);
1149 }
1150
1151 typedef llvm::FoldingSetVector<ClassTemplatePartialSpecializationDecl>
1152 CTPSDSetTy;
1153 CTPSDSetTy &CTPSDSet = D->getPartialSpecializations();
1154 Record.push_back(CTPSDSet.size());
1155 for (CTPSDSetTy::iterator I=CTPSDSet.begin(), E=CTPSDSet.end(); I!=E; ++I) {
1156 assert(I->isCanonicalDecl() && "Expected only canonical decls in set");
1157 Writer.AddDeclRef(&*I, Record);
1158 }
1159 }
1160 Code = serialization::DECL_CLASS_TEMPLATE;
1161 }
1162
VisitClassTemplateSpecializationDecl(ClassTemplateSpecializationDecl * D)1163 void ASTDeclWriter::VisitClassTemplateSpecializationDecl(
1164 ClassTemplateSpecializationDecl *D) {
1165 VisitCXXRecordDecl(D);
1166
1167 llvm::PointerUnion<ClassTemplateDecl *,
1168 ClassTemplatePartialSpecializationDecl *> InstFrom
1169 = D->getSpecializedTemplateOrPartial();
1170 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) {
1171 Writer.AddDeclRef(InstFromD, Record);
1172 } else {
1173 Writer.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>(),
1174 Record);
1175 Writer.AddTemplateArgumentList(&D->getTemplateInstantiationArgs(), Record);
1176 }
1177
1178 Writer.AddTemplateArgumentList(&D->getTemplateArgs(), Record);
1179 Writer.AddSourceLocation(D->getPointOfInstantiation(), Record);
1180 Record.push_back(D->getSpecializationKind());
1181 Record.push_back(D->isCanonicalDecl());
1182
1183 if (D->isCanonicalDecl()) {
1184 // When reading, we'll add it to the folding set of the following template.
1185 Writer.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl(), Record);
1186 }
1187
1188 // Explicit info.
1189 Writer.AddTypeSourceInfo(D->getTypeAsWritten(), Record);
1190 if (D->getTypeAsWritten()) {
1191 Writer.AddSourceLocation(D->getExternLoc(), Record);
1192 Writer.AddSourceLocation(D->getTemplateKeywordLoc(), Record);
1193 }
1194
1195 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION;
1196 }
1197
VisitClassTemplatePartialSpecializationDecl(ClassTemplatePartialSpecializationDecl * D)1198 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl(
1199 ClassTemplatePartialSpecializationDecl *D) {
1200 VisitClassTemplateSpecializationDecl(D);
1201
1202 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record);
1203 Writer.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten(), Record);
1204
1205 // These are read/set from/to the first declaration.
1206 if (D->getPreviousDecl() == nullptr) {
1207 Writer.AddDeclRef(D->getInstantiatedFromMember(), Record);
1208 Record.push_back(D->isMemberSpecialization());
1209 }
1210
1211 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION;
1212 }
1213
VisitVarTemplateDecl(VarTemplateDecl * D)1214 void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) {
1215 VisitRedeclarableTemplateDecl(D);
1216
1217 if (D->isFirstDecl()) {
1218 typedef llvm::FoldingSetVector<VarTemplateSpecializationDecl> VTSDSetTy;
1219 VTSDSetTy &VTSDSet = D->getSpecializations();
1220 Record.push_back(VTSDSet.size());
1221 for (VTSDSetTy::iterator I = VTSDSet.begin(), E = VTSDSet.end(); I != E;
1222 ++I) {
1223 assert(I->isCanonicalDecl() && "Expected only canonical decls in set");
1224 Writer.AddDeclRef(&*I, Record);
1225 }
1226
1227 typedef llvm::FoldingSetVector<VarTemplatePartialSpecializationDecl>
1228 VTPSDSetTy;
1229 VTPSDSetTy &VTPSDSet = D->getPartialSpecializations();
1230 Record.push_back(VTPSDSet.size());
1231 for (VTPSDSetTy::iterator I = VTPSDSet.begin(), E = VTPSDSet.end(); I != E;
1232 ++I) {
1233 assert(I->isCanonicalDecl() && "Expected only canonical decls in set");
1234 Writer.AddDeclRef(&*I, Record);
1235 }
1236 }
1237 Code = serialization::DECL_VAR_TEMPLATE;
1238 }
1239
VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl * D)1240 void ASTDeclWriter::VisitVarTemplateSpecializationDecl(
1241 VarTemplateSpecializationDecl *D) {
1242 VisitVarDecl(D);
1243
1244 llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *>
1245 InstFrom = D->getSpecializedTemplateOrPartial();
1246 if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) {
1247 Writer.AddDeclRef(InstFromD, Record);
1248 } else {
1249 Writer.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>(),
1250 Record);
1251 Writer.AddTemplateArgumentList(&D->getTemplateInstantiationArgs(), Record);
1252 }
1253
1254 // Explicit info.
1255 Writer.AddTypeSourceInfo(D->getTypeAsWritten(), Record);
1256 if (D->getTypeAsWritten()) {
1257 Writer.AddSourceLocation(D->getExternLoc(), Record);
1258 Writer.AddSourceLocation(D->getTemplateKeywordLoc(), Record);
1259 }
1260
1261 Writer.AddTemplateArgumentList(&D->getTemplateArgs(), Record);
1262 Writer.AddSourceLocation(D->getPointOfInstantiation(), Record);
1263 Record.push_back(D->getSpecializationKind());
1264 Record.push_back(D->isCanonicalDecl());
1265
1266 if (D->isCanonicalDecl()) {
1267 // When reading, we'll add it to the folding set of the following template.
1268 Writer.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl(), Record);
1269 }
1270
1271 Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION;
1272 }
1273
VisitVarTemplatePartialSpecializationDecl(VarTemplatePartialSpecializationDecl * D)1274 void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl(
1275 VarTemplatePartialSpecializationDecl *D) {
1276 VisitVarTemplateSpecializationDecl(D);
1277
1278 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record);
1279 Writer.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten(), Record);
1280
1281 // These are read/set from/to the first declaration.
1282 if (D->getPreviousDecl() == nullptr) {
1283 Writer.AddDeclRef(D->getInstantiatedFromMember(), Record);
1284 Record.push_back(D->isMemberSpecialization());
1285 }
1286
1287 Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION;
1288 }
1289
VisitClassScopeFunctionSpecializationDecl(ClassScopeFunctionSpecializationDecl * D)1290 void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl(
1291 ClassScopeFunctionSpecializationDecl *D) {
1292 VisitDecl(D);
1293 Writer.AddDeclRef(D->getSpecialization(), Record);
1294 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION;
1295 }
1296
1297
VisitFunctionTemplateDecl(FunctionTemplateDecl * D)1298 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
1299 VisitRedeclarableTemplateDecl(D);
1300
1301 if (D->isFirstDecl()) {
1302 // This FunctionTemplateDecl owns the CommonPtr; write it.
1303
1304 // Write the function specialization declarations.
1305 Record.push_back(D->getSpecializations().size());
1306 for (llvm::FoldingSetVector<FunctionTemplateSpecializationInfo>::iterator
1307 I = D->getSpecializations().begin(),
1308 E = D->getSpecializations().end() ; I != E; ++I) {
1309 assert(I->Function->isCanonicalDecl() &&
1310 "Expected only canonical decls in set");
1311 Writer.AddDeclRef(I->Function, Record);
1312 }
1313 }
1314 Code = serialization::DECL_FUNCTION_TEMPLATE;
1315 }
1316
VisitTemplateTypeParmDecl(TemplateTypeParmDecl * D)1317 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
1318 VisitTypeDecl(D);
1319
1320 Record.push_back(D->wasDeclaredWithTypename());
1321 Record.push_back(D->defaultArgumentWasInherited());
1322 Writer.AddTypeSourceInfo(D->getDefaultArgumentInfo(), Record);
1323
1324 Code = serialization::DECL_TEMPLATE_TYPE_PARM;
1325 }
1326
VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl * D)1327 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
1328 // For an expanded parameter pack, record the number of expansion types here
1329 // so that it's easier for deserialization to allocate the right amount of
1330 // memory.
1331 if (D->isExpandedParameterPack())
1332 Record.push_back(D->getNumExpansionTypes());
1333
1334 VisitDeclaratorDecl(D);
1335 // TemplateParmPosition.
1336 Record.push_back(D->getDepth());
1337 Record.push_back(D->getPosition());
1338
1339 if (D->isExpandedParameterPack()) {
1340 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
1341 Writer.AddTypeRef(D->getExpansionType(I), Record);
1342 Writer.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I), Record);
1343 }
1344
1345 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK;
1346 } else {
1347 // Rest of NonTypeTemplateParmDecl.
1348 Record.push_back(D->isParameterPack());
1349 Record.push_back(D->getDefaultArgument() != nullptr);
1350 if (D->getDefaultArgument()) {
1351 Writer.AddStmt(D->getDefaultArgument());
1352 Record.push_back(D->defaultArgumentWasInherited());
1353 }
1354 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM;
1355 }
1356 }
1357
VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl * D)1358 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
1359 // For an expanded parameter pack, record the number of expansion types here
1360 // so that it's easier for deserialization to allocate the right amount of
1361 // memory.
1362 if (D->isExpandedParameterPack())
1363 Record.push_back(D->getNumExpansionTemplateParameters());
1364
1365 VisitTemplateDecl(D);
1366 // TemplateParmPosition.
1367 Record.push_back(D->getDepth());
1368 Record.push_back(D->getPosition());
1369
1370 if (D->isExpandedParameterPack()) {
1371 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
1372 I != N; ++I)
1373 Writer.AddTemplateParameterList(D->getExpansionTemplateParameters(I),
1374 Record);
1375 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK;
1376 } else {
1377 // Rest of TemplateTemplateParmDecl.
1378 Writer.AddTemplateArgumentLoc(D->getDefaultArgument(), Record);
1379 Record.push_back(D->defaultArgumentWasInherited());
1380 Record.push_back(D->isParameterPack());
1381 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM;
1382 }
1383 }
1384
VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl * D)1385 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
1386 VisitRedeclarableTemplateDecl(D);
1387 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE;
1388 }
1389
VisitStaticAssertDecl(StaticAssertDecl * D)1390 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) {
1391 VisitDecl(D);
1392 Writer.AddStmt(D->getAssertExpr());
1393 Record.push_back(D->isFailed());
1394 Writer.AddStmt(D->getMessage());
1395 Writer.AddSourceLocation(D->getRParenLoc(), Record);
1396 Code = serialization::DECL_STATIC_ASSERT;
1397 }
1398
1399 /// \brief Emit the DeclContext part of a declaration context decl.
1400 ///
1401 /// \param LexicalOffset the offset at which the DECL_CONTEXT_LEXICAL
1402 /// block for this declaration context is stored. May be 0 to indicate
1403 /// that there are no declarations stored within this context.
1404 ///
1405 /// \param VisibleOffset the offset at which the DECL_CONTEXT_VISIBLE
1406 /// block for this declaration context is stored. May be 0 to indicate
1407 /// that there are no declarations visible from this context. Note
1408 /// that this value will not be emitted for non-primary declaration
1409 /// contexts.
VisitDeclContext(DeclContext * DC,uint64_t LexicalOffset,uint64_t VisibleOffset)1410 void ASTDeclWriter::VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset,
1411 uint64_t VisibleOffset) {
1412 Record.push_back(LexicalOffset);
1413 Record.push_back(VisibleOffset);
1414 }
1415
1416 template <typename T>
VisitRedeclarable(Redeclarable<T> * D)1417 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) {
1418 T *First = D->getFirstDecl();
1419 if (First->getMostRecentDecl() != First) {
1420 assert(isRedeclarableDeclKind(static_cast<T *>(D)->getKind()) &&
1421 "Not considered redeclarable?");
1422
1423 // There is more than one declaration of this entity, so we will need to
1424 // write a redeclaration chain.
1425 Writer.AddDeclRef(First, Record);
1426 Writer.Redeclarations.insert(First);
1427
1428 // Make sure that we serialize both the previous and the most-recent
1429 // declarations, which (transitively) ensures that all declarations in the
1430 // chain get serialized.
1431 (void)Writer.GetDeclRef(D->getPreviousDecl());
1432 (void)Writer.GetDeclRef(First->getMostRecentDecl());
1433 } else {
1434 // We use the sentinel value 0 to indicate an only declaration.
1435 Record.push_back(0);
1436 }
1437
1438 }
1439
VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl * D)1440 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) {
1441 Record.push_back(D->varlist_size());
1442 VisitDecl(D);
1443 for (auto *I : D->varlists())
1444 Writer.AddStmt(I);
1445 Code = serialization::DECL_OMP_THREADPRIVATE;
1446 }
1447
1448 //===----------------------------------------------------------------------===//
1449 // ASTWriter Implementation
1450 //===----------------------------------------------------------------------===//
1451
WriteDeclsBlockAbbrevs()1452 void ASTWriter::WriteDeclsBlockAbbrevs() {
1453 using namespace llvm;
1454
1455 BitCodeAbbrev *Abv;
1456
1457 // Abbreviation for DECL_FIELD
1458 Abv = new BitCodeAbbrev();
1459 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD));
1460 // Decl
1461 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1462 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext
1463 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1464 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1465 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1466 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1467 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1468 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1469 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier
1470 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1471 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1472 // NamedDecl
1473 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1474 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1475 // ValueDecl
1476 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1477 // DeclaratorDecl
1478 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1479 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1480 // FieldDecl
1481 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable
1482 Abv->Add(BitCodeAbbrevOp(0)); //getBitWidth
1483 // Type Source Info
1484 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
1485 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1486 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1487 DeclFieldAbbrev = Stream.EmitAbbrev(Abv);
1488
1489 // Abbreviation for DECL_OBJC_IVAR
1490 Abv = new BitCodeAbbrev();
1491 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR));
1492 // Decl
1493 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1494 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext
1495 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1496 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1497 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1498 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1499 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1500 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1501 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier
1502 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1503 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1504 // NamedDecl
1505 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1506 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1507 // ValueDecl
1508 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1509 // DeclaratorDecl
1510 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1511 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1512 // FieldDecl
1513 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable
1514 Abv->Add(BitCodeAbbrevOp(0)); //getBitWidth
1515 // ObjC Ivar
1516 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl
1517 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize
1518 // Type Source Info
1519 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
1520 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1521 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1522 DeclObjCIvarAbbrev = Stream.EmitAbbrev(Abv);
1523
1524 // Abbreviation for DECL_ENUM
1525 Abv = new BitCodeAbbrev();
1526 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM));
1527 // Redeclarable
1528 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
1529 // Decl
1530 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1531 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext
1532 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1533 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1534 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1535 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1536 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1537 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1538 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
1539 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1540 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1541 // NamedDecl
1542 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1543 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1544 // TypeDecl
1545 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
1546 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
1547 // TagDecl
1548 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace
1549 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind
1550 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition
1551 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator
1552 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding
1553 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired
1554 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
1555 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1556 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypedefNameAnonDecl
1557 // EnumDecl
1558 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef
1559 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType
1560 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType
1561 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits
1562 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits
1563 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped
1564 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag
1565 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed
1566 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum
1567 // DC
1568 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset
1569 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset
1570 DeclEnumAbbrev = Stream.EmitAbbrev(Abv);
1571
1572 // Abbreviation for DECL_RECORD
1573 Abv = new BitCodeAbbrev();
1574 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD));
1575 // Redeclarable
1576 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
1577 // Decl
1578 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1579 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext
1580 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1581 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1582 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1583 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1584 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1585 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1586 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
1587 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1588 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1589 // NamedDecl
1590 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1591 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1592 // TypeDecl
1593 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
1594 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
1595 // TagDecl
1596 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace
1597 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind
1598 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition
1599 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator
1600 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding
1601 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired
1602 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
1603 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1604 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypedefNameAnonDecl
1605 // RecordDecl
1606 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember
1607 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion
1608 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember
1609 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember
1610 // DC
1611 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset
1612 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset
1613 DeclRecordAbbrev = Stream.EmitAbbrev(Abv);
1614
1615 // Abbreviation for DECL_PARM_VAR
1616 Abv = new BitCodeAbbrev();
1617 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR));
1618 // Redeclarable
1619 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
1620 // Decl
1621 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1622 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext
1623 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1624 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1625 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1626 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1627 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1628 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1629 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
1630 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1631 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1632 // NamedDecl
1633 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1634 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1635 // ValueDecl
1636 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1637 // DeclaratorDecl
1638 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1639 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1640 // VarDecl
1641 Abv->Add(BitCodeAbbrevOp(0)); // StorageClass
1642 Abv->Add(BitCodeAbbrevOp(0)); // getTSCSpec
1643 Abv->Add(BitCodeAbbrevOp(0)); // hasCXXDirectInitializer
1644 Abv->Add(BitCodeAbbrevOp(0)); // isExceptionVariable
1645 Abv->Add(BitCodeAbbrevOp(0)); // isNRVOVariable
1646 Abv->Add(BitCodeAbbrevOp(0)); // isCXXForRangeDecl
1647 Abv->Add(BitCodeAbbrevOp(0)); // isARCPseudoStrong
1648 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr
1649 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture
1650 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope
1651 Abv->Add(BitCodeAbbrevOp(0)); // Linkage
1652 Abv->Add(BitCodeAbbrevOp(0)); // HasInit
1653 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo
1654 // ParmVarDecl
1655 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter
1656 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth
1657 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex
1658 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier
1659 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted
1660 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg
1661 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg
1662 // Type Source Info
1663 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
1664 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1665 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1666 DeclParmVarAbbrev = Stream.EmitAbbrev(Abv);
1667
1668 // Abbreviation for DECL_TYPEDEF
1669 Abv = new BitCodeAbbrev();
1670 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF));
1671 // Redeclarable
1672 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
1673 // Decl
1674 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1675 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext
1676 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1677 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1678 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1679 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1680 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1681 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1682 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
1683 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1684 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1685 // NamedDecl
1686 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1687 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1688 // TypeDecl
1689 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
1690 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
1691 // TypedefDecl
1692 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1693 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1694 DeclTypedefAbbrev = Stream.EmitAbbrev(Abv);
1695
1696 // Abbreviation for DECL_VAR
1697 Abv = new BitCodeAbbrev();
1698 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR));
1699 // Redeclarable
1700 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
1701 // Decl
1702 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1703 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext
1704 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1705 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1706 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1707 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1708 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1709 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1710 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
1711 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1712 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1713 // NamedDecl
1714 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1715 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1716 // ValueDecl
1717 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1718 // DeclaratorDecl
1719 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1720 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1721 // VarDecl
1722 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // StorageClass
1723 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // getTSCSpec
1724 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // CXXDirectInitializer
1725 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable
1726 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable
1727 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl
1728 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong
1729 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr
1730 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture
1731 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope
1732 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage
1733 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasInit
1734 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasMemberSpecInfo
1735 // Type Source Info
1736 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
1737 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1738 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1739 DeclVarAbbrev = Stream.EmitAbbrev(Abv);
1740
1741 // Abbreviation for EXPR_DECL_REF
1742 Abv = new BitCodeAbbrev();
1743 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF));
1744 //Stmt
1745 //Expr
1746 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1747 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
1748 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
1749 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
1750 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
1751 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
1752 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
1753 //DeclRefExpr
1754 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier
1755 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound
1756 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs
1757 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates
1758 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //RefersToEnclosingLocal
1759 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef
1760 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
1761 DeclRefExprAbbrev = Stream.EmitAbbrev(Abv);
1762
1763 // Abbreviation for EXPR_INTEGER_LITERAL
1764 Abv = new BitCodeAbbrev();
1765 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL));
1766 //Stmt
1767 //Expr
1768 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1769 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
1770 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
1771 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
1772 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
1773 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
1774 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
1775 //Integer Literal
1776 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
1777 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width
1778 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value
1779 IntegerLiteralAbbrev = Stream.EmitAbbrev(Abv);
1780
1781 // Abbreviation for EXPR_CHARACTER_LITERAL
1782 Abv = new BitCodeAbbrev();
1783 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL));
1784 //Stmt
1785 //Expr
1786 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1787 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
1788 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
1789 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
1790 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
1791 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
1792 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
1793 //Character Literal
1794 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue
1795 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
1796 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // getKind
1797 CharacterLiteralAbbrev = Stream.EmitAbbrev(Abv);
1798
1799 Abv = new BitCodeAbbrev();
1800 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL));
1801 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
1802 DeclContextLexicalAbbrev = Stream.EmitAbbrev(Abv);
1803
1804 Abv = new BitCodeAbbrev();
1805 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE));
1806 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1807 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
1808 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(Abv);
1809 }
1810
1811 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by
1812 /// consumers of the AST.
1813 ///
1814 /// Such decls will always be deserialized from the AST file, so we would like
1815 /// this to be as restrictive as possible. Currently the predicate is driven by
1816 /// code generation requirements, if other clients have a different notion of
1817 /// what is "required" then we may have to consider an alternate scheme where
1818 /// clients can iterate over the top-level decls and get information on them,
1819 /// without necessary deserializing them. We could explicitly require such
1820 /// clients to use a separate API call to "realize" the decl. This should be
1821 /// relatively painless since they would presumably only do it for top-level
1822 /// decls.
isRequiredDecl(const Decl * D,ASTContext & Context)1823 static bool isRequiredDecl(const Decl *D, ASTContext &Context) {
1824 // An ObjCMethodDecl is never considered as "required" because its
1825 // implementation container always is.
1826
1827 // File scoped assembly or obj-c implementation must be seen. ImportDecl is
1828 // used by codegen to determine the set of imported modules to search for
1829 // inputs for automatic linking.
1830 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D) || isa<ImportDecl>(D))
1831 return true;
1832
1833 return Context.DeclMustBeEmitted(D);
1834 }
1835
WriteDecl(ASTContext & Context,Decl * D)1836 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) {
1837 // Switch case IDs are per Decl.
1838 ClearSwitchCaseIDs();
1839
1840 RecordData Record;
1841 ASTDeclWriter W(*this, Context, Record);
1842
1843 // Determine the ID for this declaration.
1844 serialization::DeclID ID;
1845 if (D->isFromASTFile())
1846 ID = getDeclID(D);
1847 else {
1848 serialization::DeclID &IDR = DeclIDs[D];
1849 if (IDR == 0)
1850 IDR = NextDeclID++;
1851
1852 ID= IDR;
1853 }
1854
1855 bool isReplacingADecl = ID < FirstDeclID;
1856
1857 // If this declaration is also a DeclContext, write blocks for the
1858 // declarations that lexically stored inside its context and those
1859 // declarations that are visible from its context. These blocks
1860 // are written before the declaration itself so that we can put
1861 // their offsets into the record for the declaration.
1862 uint64_t LexicalOffset = 0;
1863 uint64_t VisibleOffset = 0;
1864 DeclContext *DC = dyn_cast<DeclContext>(D);
1865 if (DC) {
1866 if (isReplacingADecl) {
1867 // It is replacing a decl from a chained PCH; make sure that the
1868 // DeclContext is fully loaded.
1869 if (DC->hasExternalLexicalStorage())
1870 DC->LoadLexicalDeclsFromExternalStorage();
1871 if (DC->hasExternalVisibleStorage())
1872 Chain->completeVisibleDeclsMap(DC);
1873 }
1874 LexicalOffset = WriteDeclContextLexicalBlock(Context, DC);
1875 VisibleOffset = WriteDeclContextVisibleBlock(Context, DC);
1876 }
1877
1878 if (isReplacingADecl) {
1879 // We're replacing a decl in a previous file.
1880 ReplacedDecls.push_back(ReplacedDeclInfo(ID, Stream.GetCurrentBitNo(),
1881 D->getLocation()));
1882 } else {
1883 unsigned Index = ID - FirstDeclID;
1884
1885 // Record the offset for this declaration
1886 SourceLocation Loc = D->getLocation();
1887 if (DeclOffsets.size() == Index)
1888 DeclOffsets.push_back(DeclOffset(Loc, Stream.GetCurrentBitNo()));
1889 else if (DeclOffsets.size() < Index) {
1890 DeclOffsets.resize(Index+1);
1891 DeclOffsets[Index].setLocation(Loc);
1892 DeclOffsets[Index].BitOffset = Stream.GetCurrentBitNo();
1893 }
1894
1895 SourceManager &SM = Context.getSourceManager();
1896 if (Loc.isValid() && SM.isLocalSourceLocation(Loc))
1897 associateDeclWithFile(D, ID);
1898 }
1899
1900 // Build and emit a record for this declaration
1901 Record.clear();
1902 W.Code = (serialization::DeclCode)0;
1903 W.AbbrevToUse = 0;
1904 W.Visit(D);
1905 if (DC) W.VisitDeclContext(DC, LexicalOffset, VisibleOffset);
1906
1907 if (!W.Code)
1908 llvm::report_fatal_error(StringRef("unexpected declaration kind '") +
1909 D->getDeclKindName() + "'");
1910 Stream.EmitRecord(W.Code, Record, W.AbbrevToUse);
1911
1912 // Flush any expressions that were written as part of this declaration.
1913 FlushStmts();
1914
1915 // Flush C++ base specifiers, if there are any.
1916 FlushCXXBaseSpecifiers();
1917
1918 // Note declarations that should be deserialized eagerly so that we can add
1919 // them to a record in the AST file later.
1920 if (isRequiredDecl(D, Context))
1921 EagerlyDeserializedDecls.push_back(ID);
1922 }
1923
AddFunctionDefinition(const FunctionDecl * FD,RecordData & Record)1924 void ASTWriter::AddFunctionDefinition(const FunctionDecl *FD,
1925 RecordData &Record) {
1926 ClearSwitchCaseIDs();
1927
1928 ASTDeclWriter W(*this, FD->getASTContext(), Record);
1929 W.AddFunctionDefinition(FD);
1930 }
1931