1 //===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements serialization for Declarations.
12 //===----------------------------------------------------------------------===//
14 #include "clang/Serialization/ASTWriter.h"
15 #include "clang/AST/DeclVisitor.h"
16 #include "clang/AST/DeclCXX.h"
17 #include "clang/AST/DeclTemplate.h"
18 #include "clang/AST/Expr.h"
19 #include "llvm/ADT/Twine.h"
20 #include "llvm/Bitcode/BitstreamWriter.h"
21 #include "llvm/Support/ErrorHandling.h"
22 using namespace clang;
24 //===----------------------------------------------------------------------===//
25 // Declaration serialization
26 //===----------------------------------------------------------------------===//
29 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> {
33 ASTWriter::RecordData &Record;
36 serialization::DeclCode Code;
39 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context,
40 ASTWriter::RecordData &Record)
41 : Writer(Writer), Context(Context), Record(Record) {
46 void VisitDecl(Decl *D);
47 void VisitTranslationUnitDecl(TranslationUnitDecl *D);
48 void VisitNamedDecl(NamedDecl *D);
49 void VisitNamespaceDecl(NamespaceDecl *D);
50 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
51 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
52 void VisitTypeDecl(TypeDecl *D);
53 void VisitTypedefDecl(TypedefDecl *D);
54 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
55 void VisitTagDecl(TagDecl *D);
56 void VisitEnumDecl(EnumDecl *D);
57 void VisitRecordDecl(RecordDecl *D);
58 void VisitCXXRecordDecl(CXXRecordDecl *D);
59 void VisitClassTemplateSpecializationDecl(
60 ClassTemplateSpecializationDecl *D);
61 void VisitClassTemplatePartialSpecializationDecl(
62 ClassTemplatePartialSpecializationDecl *D);
63 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
64 void VisitValueDecl(ValueDecl *D);
65 void VisitEnumConstantDecl(EnumConstantDecl *D);
66 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
67 void VisitDeclaratorDecl(DeclaratorDecl *D);
68 void VisitFunctionDecl(FunctionDecl *D);
69 void VisitCXXMethodDecl(CXXMethodDecl *D);
70 void VisitCXXConstructorDecl(CXXConstructorDecl *D);
71 void VisitCXXDestructorDecl(CXXDestructorDecl *D);
72 void VisitCXXConversionDecl(CXXConversionDecl *D);
73 void VisitFieldDecl(FieldDecl *D);
74 void VisitVarDecl(VarDecl *D);
75 void VisitImplicitParamDecl(ImplicitParamDecl *D);
76 void VisitParmVarDecl(ParmVarDecl *D);
77 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
78 void VisitTemplateDecl(TemplateDecl *D);
79 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
80 void VisitClassTemplateDecl(ClassTemplateDecl *D);
81 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
82 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
83 void VisitUsingDecl(UsingDecl *D);
84 void VisitUsingShadowDecl(UsingShadowDecl *D);
85 void VisitLinkageSpecDecl(LinkageSpecDecl *D);
86 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
87 void VisitAccessSpecDecl(AccessSpecDecl *D);
88 void VisitFriendDecl(FriendDecl *D);
89 void VisitFriendTemplateDecl(FriendTemplateDecl *D);
90 void VisitStaticAssertDecl(StaticAssertDecl *D);
91 void VisitBlockDecl(BlockDecl *D);
93 void VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset,
94 uint64_t VisibleOffset);
95 template <typename T> void VisitRedeclarable(Redeclarable<T> *D);
98 // FIXME: Put in the same order is DeclNodes.td?
99 void VisitObjCMethodDecl(ObjCMethodDecl *D);
100 void VisitObjCContainerDecl(ObjCContainerDecl *D);
101 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
102 void VisitObjCIvarDecl(ObjCIvarDecl *D);
103 void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
104 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
105 void VisitObjCClassDecl(ObjCClassDecl *D);
106 void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D);
107 void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
108 void VisitObjCImplDecl(ObjCImplDecl *D);
109 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
110 void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
111 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
112 void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
113 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
117 void ASTDeclWriter::Visit(Decl *D) {
118 DeclVisitor<ASTDeclWriter>::Visit(D);
120 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs
121 // have been written. We want it last because we will not read it back when
122 // retrieving it from the AST, we'll just lazily set the offset.
123 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
124 Record.push_back(FD->isThisDeclarationADefinition());
125 if (FD->isThisDeclarationADefinition())
126 Writer.AddStmt(FD->getBody());
130 void ASTDeclWriter::VisitDecl(Decl *D) {
131 Writer.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()), Record);
132 Writer.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()), Record);
133 Writer.AddSourceLocation(D->getLocation(), Record);
134 Record.push_back(D->isInvalidDecl());
135 Record.push_back(D->hasAttrs());
136 Record.push_back(D->isImplicit());
137 Record.push_back(D->isUsed(false));
138 Record.push_back(D->getAccess());
139 Record.push_back(D->getPCHLevel());
142 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
144 Writer.AddDeclRef(D->getAnonymousNamespace(), Record);
145 Code = serialization::DECL_TRANSLATION_UNIT;
148 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) {
150 Writer.AddDeclarationName(D->getDeclName(), Record);
153 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) {
155 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record);
158 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) {
160 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record);
161 Code = serialization::DECL_TYPEDEF;
164 void ASTDeclWriter::VisitTagDecl(TagDecl *D) {
166 Record.push_back(D->getIdentifierNamespace());
167 VisitRedeclarable(D);
168 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding
169 Record.push_back(D->isDefinition());
170 Record.push_back(D->isEmbeddedInDeclarator());
171 Writer.AddSourceLocation(D->getRBraceLoc(), Record);
172 Writer.AddSourceLocation(D->getTagKeywordLoc(), Record);
173 // FIXME: maybe write optional qualifier and its range.
174 Writer.AddDeclRef(D->getTypedefForAnonDecl(), Record);
177 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) {
179 Writer.AddTypeRef(D->getIntegerType(), Record);
180 Writer.AddTypeRef(D->getPromotionType(), Record);
181 Record.push_back(D->getNumPositiveBits());
182 Record.push_back(D->getNumNegativeBits());
183 Writer.AddDeclRef(D->getInstantiatedFromMemberEnum(), Record);
184 Code = serialization::DECL_ENUM;
187 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) {
189 Record.push_back(D->hasFlexibleArrayMember());
190 Record.push_back(D->isAnonymousStructOrUnion());
191 Record.push_back(D->hasObjectMember());
192 Code = serialization::DECL_RECORD;
195 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) {
197 Writer.AddTypeRef(D->getType(), Record);
200 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) {
202 Record.push_back(D->getInitExpr()? 1 : 0);
203 if (D->getInitExpr())
204 Writer.AddStmt(D->getInitExpr());
205 Writer.AddAPSInt(D->getInitVal(), Record);
206 Code = serialization::DECL_ENUM_CONSTANT;
209 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) {
211 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record);
212 // FIXME: write optional qualifier and its range.
215 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) {
216 VisitDeclaratorDecl(D);
217 // FIXME: write DeclarationNameLoc.
219 Record.push_back(D->getIdentifierNamespace());
220 Record.push_back(D->getTemplatedKind());
221 switch (D->getTemplatedKind()) {
222 default: assert(false && "Unhandled TemplatedKind!");
224 case FunctionDecl::TK_NonTemplate:
226 case FunctionDecl::TK_FunctionTemplate:
227 Writer.AddDeclRef(D->getDescribedFunctionTemplate(), Record);
229 case FunctionDecl::TK_MemberSpecialization: {
230 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo();
231 Writer.AddDeclRef(MemberInfo->getInstantiatedFrom(), Record);
232 Record.push_back(MemberInfo->getTemplateSpecializationKind());
233 Writer.AddSourceLocation(MemberInfo->getPointOfInstantiation(), Record);
236 case FunctionDecl::TK_FunctionTemplateSpecialization: {
237 FunctionTemplateSpecializationInfo *
238 FTSInfo = D->getTemplateSpecializationInfo();
239 // We want it canonical to guarantee that it has a Common*.
240 Writer.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl(), Record);
241 Record.push_back(FTSInfo->getTemplateSpecializationKind());
243 // Template arguments.
244 Writer.AddTemplateArgumentList(FTSInfo->TemplateArguments, Record);
246 // Template args as written.
247 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != 0);
248 if (FTSInfo->TemplateArgumentsAsWritten) {
249 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->size());
250 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->size(); i!=e; ++i)
251 Writer.AddTemplateArgumentLoc((*FTSInfo->TemplateArgumentsAsWritten)[i],
253 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->getLAngleLoc(),
255 Writer.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->getRAngleLoc(),
259 Writer.AddSourceLocation(FTSInfo->getPointOfInstantiation(), Record);
262 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
263 DependentFunctionTemplateSpecializationInfo *
264 DFTSInfo = D->getDependentSpecializationInfo();
267 Record.push_back(DFTSInfo->getNumTemplates());
268 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i)
269 Writer.AddDeclRef(DFTSInfo->getTemplate(i), Record);
272 Record.push_back(DFTSInfo->getNumTemplateArgs());
273 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i)
274 Writer.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i), Record);
275 Writer.AddSourceLocation(DFTSInfo->getLAngleLoc(), Record);
276 Writer.AddSourceLocation(DFTSInfo->getRAngleLoc(), Record);
281 // FunctionDecl's body is handled last at ASTWriterDecl::Visit,
282 // after everything else is written.
284 VisitRedeclarable(D);
285 Record.push_back(D->getStorageClass()); // FIXME: stable encoding
286 Record.push_back(D->getStorageClassAsWritten());
287 Record.push_back(D->isInlineSpecified());
288 Record.push_back(D->isVirtualAsWritten());
289 Record.push_back(D->isPure());
290 Record.push_back(D->hasInheritedPrototype());
291 Record.push_back(D->hasWrittenPrototype());
292 Record.push_back(D->isDeleted());
293 Record.push_back(D->isTrivial());
294 Record.push_back(D->isCopyAssignment());
295 Record.push_back(D->hasImplicitReturnZero());
296 Writer.AddSourceLocation(D->getLocEnd(), Record);
298 Record.push_back(D->param_size());
299 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end();
301 Writer.AddDeclRef(*P, Record);
302 Code = serialization::DECL_FUNCTION;
305 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
307 // FIXME: convert to LazyStmtPtr?
308 // Unlike C/C++, method bodies will never be in header files.
309 bool HasBodyStuff = D->getBody() != 0 ||
310 D->getSelfDecl() != 0 || D->getCmdDecl() != 0;
311 Record.push_back(HasBodyStuff);
313 Writer.AddStmt(D->getBody());
314 Writer.AddDeclRef(D->getSelfDecl(), Record);
315 Writer.AddDeclRef(D->getCmdDecl(), Record);
317 Record.push_back(D->isInstanceMethod());
318 Record.push_back(D->isVariadic());
319 Record.push_back(D->isSynthesized());
320 Record.push_back(D->isDefined());
321 // FIXME: stable encoding for @required/@optional
322 Record.push_back(D->getImplementationControl());
323 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway
324 Record.push_back(D->getObjCDeclQualifier());
325 Record.push_back(D->getNumSelectorArgs());
326 Writer.AddTypeRef(D->getResultType(), Record);
327 Writer.AddTypeSourceInfo(D->getResultTypeSourceInfo(), Record);
328 Writer.AddSourceLocation(D->getLocEnd(), Record);
329 Record.push_back(D->param_size());
330 for (ObjCMethodDecl::param_iterator P = D->param_begin(),
331 PEnd = D->param_end(); P != PEnd; ++P)
332 Writer.AddDeclRef(*P, Record);
333 Code = serialization::DECL_OBJC_METHOD;
336 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) {
338 Writer.AddSourceRange(D->getAtEndRange(), Record);
339 // Abstract class (no need to define a stable serialization::DECL code).
342 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
343 VisitObjCContainerDecl(D);
344 Writer.AddTypeRef(QualType(D->getTypeForDecl(), 0), Record);
345 Writer.AddDeclRef(D->getSuperClass(), Record);
347 // Write out the protocols that are directly referenced by the @interface.
348 Record.push_back(D->ReferencedProtocols.size());
349 for (ObjCInterfaceDecl::protocol_iterator P = D->protocol_begin(),
350 PEnd = D->protocol_end();
352 Writer.AddDeclRef(*P, Record);
353 for (ObjCInterfaceDecl::protocol_loc_iterator PL = D->protocol_loc_begin(),
354 PLEnd = D->protocol_loc_end();
356 Writer.AddSourceLocation(*PL, Record);
358 // Write out the protocols that are transitively referenced.
359 Record.push_back(D->AllReferencedProtocols.size());
360 for (ObjCList<ObjCProtocolDecl>::iterator
361 P = D->AllReferencedProtocols.begin(),
362 PEnd = D->AllReferencedProtocols.end();
364 Writer.AddDeclRef(*P, Record);
366 // Write out the ivars.
367 Record.push_back(D->ivar_size());
368 for (ObjCInterfaceDecl::ivar_iterator I = D->ivar_begin(),
369 IEnd = D->ivar_end(); I != IEnd; ++I)
370 Writer.AddDeclRef(*I, Record);
371 Writer.AddDeclRef(D->getCategoryList(), Record);
372 Record.push_back(D->isForwardDecl());
373 Record.push_back(D->isImplicitInterfaceDecl());
374 Writer.AddSourceLocation(D->getClassLoc(), Record);
375 Writer.AddSourceLocation(D->getSuperClassLoc(), Record);
376 Writer.AddSourceLocation(D->getLocEnd(), Record);
377 Code = serialization::DECL_OBJC_INTERFACE;
380 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
382 // FIXME: stable encoding for @public/@private/@protected/@package
383 Record.push_back(D->getAccessControl());
384 Record.push_back(D->getSynthesize());
385 Code = serialization::DECL_OBJC_IVAR;
388 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
389 VisitObjCContainerDecl(D);
390 Record.push_back(D->isForwardDecl());
391 Writer.AddSourceLocation(D->getLocEnd(), Record);
392 Record.push_back(D->protocol_size());
393 for (ObjCProtocolDecl::protocol_iterator
394 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I)
395 Writer.AddDeclRef(*I, Record);
396 for (ObjCProtocolDecl::protocol_loc_iterator PL = D->protocol_loc_begin(),
397 PLEnd = D->protocol_loc_end();
399 Writer.AddSourceLocation(*PL, Record);
400 Code = serialization::DECL_OBJC_PROTOCOL;
403 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) {
405 Code = serialization::DECL_OBJC_AT_DEFS_FIELD;
408 void ASTDeclWriter::VisitObjCClassDecl(ObjCClassDecl *D) {
410 Record.push_back(D->size());
411 for (ObjCClassDecl::iterator I = D->begin(), IEnd = D->end(); I != IEnd; ++I)
412 Writer.AddDeclRef(I->getInterface(), Record);
413 for (ObjCClassDecl::iterator I = D->begin(), IEnd = D->end(); I != IEnd; ++I)
414 Writer.AddSourceLocation(I->getLocation(), Record);
415 Code = serialization::DECL_OBJC_CLASS;
418 void ASTDeclWriter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) {
420 Record.push_back(D->protocol_size());
421 for (ObjCForwardProtocolDecl::protocol_iterator
422 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I)
423 Writer.AddDeclRef(*I, Record);
424 for (ObjCForwardProtocolDecl::protocol_loc_iterator
425 PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end();
427 Writer.AddSourceLocation(*PL, Record);
428 Code = serialization::DECL_OBJC_FORWARD_PROTOCOL;
431 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
432 VisitObjCContainerDecl(D);
433 Writer.AddDeclRef(D->getClassInterface(), Record);
434 Record.push_back(D->protocol_size());
435 for (ObjCCategoryDecl::protocol_iterator
436 I = D->protocol_begin(), IEnd = D->protocol_end(); I != IEnd; ++I)
437 Writer.AddDeclRef(*I, Record);
438 for (ObjCCategoryDecl::protocol_loc_iterator
439 PL = D->protocol_loc_begin(), PLEnd = D->protocol_loc_end();
441 Writer.AddSourceLocation(*PL, Record);
442 Writer.AddDeclRef(D->getNextClassCategory(), Record);
443 Record.push_back(D->hasSynthBitfield());
444 Writer.AddSourceLocation(D->getAtLoc(), Record);
445 Writer.AddSourceLocation(D->getCategoryNameLoc(), Record);
446 Code = serialization::DECL_OBJC_CATEGORY;
449 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) {
451 Writer.AddDeclRef(D->getClassInterface(), Record);
452 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS;
455 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
457 Writer.AddSourceLocation(D->getAtLoc(), Record);
458 Writer.AddTypeSourceInfo(D->getTypeSourceInfo(), Record);
459 // FIXME: stable encoding
460 Record.push_back((unsigned)D->getPropertyAttributes());
461 Record.push_back((unsigned)D->getPropertyAttributesAsWritten());
462 // FIXME: stable encoding
463 Record.push_back((unsigned)D->getPropertyImplementation());
464 Writer.AddDeclarationName(D->getGetterName(), Record);
465 Writer.AddDeclarationName(D->getSetterName(), Record);
466 Writer.AddDeclRef(D->getGetterMethodDecl(), Record);
467 Writer.AddDeclRef(D->getSetterMethodDecl(), Record);
468 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record);
469 Code = serialization::DECL_OBJC_PROPERTY;
472 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) {
473 VisitObjCContainerDecl(D);
474 Writer.AddDeclRef(D->getClassInterface(), Record);
475 // Abstract class (no need to define a stable serialization::DECL code).
478 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
479 VisitObjCImplDecl(D);
480 Writer.AddIdentifierRef(D->getIdentifier(), Record);
481 Code = serialization::DECL_OBJC_CATEGORY_IMPL;
484 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
485 VisitObjCImplDecl(D);
486 Writer.AddDeclRef(D->getSuperClass(), Record);
487 Writer.AddCXXBaseOrMemberInitializers(D->IvarInitializers,
488 D->NumIvarInitializers, Record);
489 Record.push_back(D->hasSynthBitfield());
490 Code = serialization::DECL_OBJC_IMPLEMENTATION;
493 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
495 Writer.AddSourceLocation(D->getLocStart(), Record);
496 Writer.AddDeclRef(D->getPropertyDecl(), Record);
497 Writer.AddDeclRef(D->getPropertyIvarDecl(), Record);
498 Writer.AddStmt(D->getGetterCXXConstructor());
499 Writer.AddStmt(D->getSetterCXXAssignment());
500 Code = serialization::DECL_OBJC_PROPERTY_IMPL;
503 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) {
504 VisitDeclaratorDecl(D);
505 Record.push_back(D->isMutable());
506 Record.push_back(D->getBitWidth()? 1 : 0);
507 if (D->getBitWidth())
508 Writer.AddStmt(D->getBitWidth());
509 if (!D->getDeclName())
510 Writer.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D), Record);
511 Code = serialization::DECL_FIELD;
514 void ASTDeclWriter::VisitVarDecl(VarDecl *D) {
515 VisitDeclaratorDecl(D);
516 Record.push_back(D->getStorageClass()); // FIXME: stable encoding
517 Record.push_back(D->getStorageClassAsWritten());
518 Record.push_back(D->isThreadSpecified());
519 Record.push_back(D->hasCXXDirectInitializer());
520 Record.push_back(D->isExceptionVariable());
521 Record.push_back(D->isNRVOVariable());
522 VisitRedeclarable(D);
523 Record.push_back(D->getInit() ? 1 : 0);
525 Writer.AddStmt(D->getInit());
527 MemberSpecializationInfo *SpecInfo
528 = D->isStaticDataMember() ? D->getMemberSpecializationInfo() : 0;
529 Record.push_back(SpecInfo != 0);
531 Writer.AddDeclRef(SpecInfo->getInstantiatedFrom(), Record);
532 Record.push_back(SpecInfo->getTemplateSpecializationKind());
533 Writer.AddSourceLocation(SpecInfo->getPointOfInstantiation(), Record);
536 Code = serialization::DECL_VAR;
539 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) {
541 Code = serialization::DECL_IMPLICIT_PARAM;
544 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) {
546 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding
547 Record.push_back(D->hasInheritedDefaultArg());
548 Record.push_back(D->hasUninstantiatedDefaultArg());
549 if (D->hasUninstantiatedDefaultArg())
550 Writer.AddStmt(D->getUninstantiatedDefaultArg());
551 Code = serialization::DECL_PARM_VAR;
553 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here
554 // we dynamically check for the properties that we optimize for, but don't
555 // know are true of all PARM_VAR_DECLs.
556 if (!D->getTypeSourceInfo() &&
560 D->getAccess() == AS_none &&
561 D->getPCHLevel() == 0 &&
562 D->getStorageClass() == 0 &&
563 !D->hasCXXDirectInitializer() && // Can params have this ever?
564 D->getObjCDeclQualifier() == 0 &&
565 !D->hasInheritedDefaultArg() &&
567 !D->hasUninstantiatedDefaultArg()) // No default expr.
568 AbbrevToUse = Writer.getParmVarDeclAbbrev();
570 // Check things we know are true of *every* PARM_VAR_DECL, which is more than
571 // just us assuming it.
572 assert(!D->isInvalidDecl() && "Shouldn't emit invalid decls");
573 assert(!D->isThreadSpecified() && "PARM_VAR_DECL can't be __thread");
574 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private");
575 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var");
576 assert(D->getPreviousDeclaration() == 0 && "PARM_VAR_DECL can't be redecl");
577 assert(!D->isStaticDataMember() &&
578 "PARM_VAR_DECL can't be static data member");
581 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
583 Writer.AddStmt(D->getAsmString());
584 Code = serialization::DECL_FILE_SCOPE_ASM;
587 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) {
589 Writer.AddStmt(D->getBody());
590 Writer.AddTypeSourceInfo(D->getSignatureAsWritten(), Record);
591 Record.push_back(D->param_size());
592 for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end();
594 Writer.AddDeclRef(*P, Record);
595 Code = serialization::DECL_BLOCK;
598 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
600 // FIXME: It might be nice to serialize the brace locations for this
601 // declaration, which don't seem to be readily available in the AST.
602 Record.push_back(D->getLanguage());
603 Record.push_back(D->hasBraces());
604 Code = serialization::DECL_LINKAGE_SPEC;
607 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) {
609 Writer.AddSourceLocation(D->getLBracLoc(), Record);
610 Writer.AddSourceLocation(D->getRBracLoc(), Record);
611 Writer.AddDeclRef(D->getNextNamespace(), Record);
613 // Only write one reference--original or anonymous
614 Record.push_back(D->isOriginalNamespace());
615 if (D->isOriginalNamespace())
616 Writer.AddDeclRef(D->getAnonymousNamespace(), Record);
618 Writer.AddDeclRef(D->getOriginalNamespace(), Record);
619 Code = serialization::DECL_NAMESPACE;
621 if (Writer.hasChain() && !D->isOriginalNamespace() &&
622 D->getOriginalNamespace()->getPCHLevel() > 0) {
623 Writer.AddUpdatedNamespace(D->getOriginalNamespace());
627 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
629 Writer.AddSourceLocation(D->getNamespaceLoc(), Record);
630 Writer.AddSourceRange(D->getQualifierRange(), Record);
631 Writer.AddNestedNameSpecifier(D->getQualifier(), Record);
632 Writer.AddSourceLocation(D->getTargetNameLoc(), Record);
633 Writer.AddDeclRef(D->getNamespace(), Record);
634 Code = serialization::DECL_NAMESPACE_ALIAS;
637 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) {
639 Writer.AddSourceRange(D->getNestedNameRange(), Record);
640 Writer.AddSourceLocation(D->getUsingLocation(), Record);
641 Writer.AddNestedNameSpecifier(D->getTargetNestedNameDecl(), Record);
642 Record.push_back(D->getNumShadowDecls());
643 for (UsingDecl::shadow_iterator P = D->shadow_begin(),
644 PEnd = D->shadow_end(); P != PEnd; ++P)
645 Writer.AddDeclRef(*P, Record);
646 Record.push_back(D->isTypeName());
647 Writer.AddDeclRef(Context.getInstantiatedFromUsingDecl(D), Record);
648 Code = serialization::DECL_USING;
651 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) {
653 Writer.AddDeclRef(D->getTargetDecl(), Record);
654 Writer.AddDeclRef(D->getUsingDecl(), Record);
655 Writer.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D), Record);
656 Code = serialization::DECL_USING_SHADOW;
659 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
661 Writer.AddSourceLocation(D->getUsingLoc(), Record);
662 Writer.AddSourceLocation(D->getNamespaceKeyLocation(), Record);
663 Writer.AddSourceRange(D->getQualifierRange(), Record);
664 Writer.AddNestedNameSpecifier(D->getQualifier(), Record);
665 Writer.AddDeclRef(D->getNominatedNamespace(), Record);
666 Writer.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()), Record);
667 Code = serialization::DECL_USING_DIRECTIVE;
670 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
672 Writer.AddSourceRange(D->getTargetNestedNameRange(), Record);
673 Writer.AddSourceLocation(D->getUsingLoc(), Record);
674 Writer.AddNestedNameSpecifier(D->getTargetNestedNameSpecifier(), Record);
675 Code = serialization::DECL_UNRESOLVED_USING_VALUE;
678 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl(
679 UnresolvedUsingTypenameDecl *D) {
681 Writer.AddSourceRange(D->getTargetNestedNameRange(), Record);
682 Writer.AddSourceLocation(D->getUsingLoc(), Record);
683 Writer.AddSourceLocation(D->getTypenameLoc(), Record);
684 Writer.AddNestedNameSpecifier(D->getTargetNestedNameSpecifier(), Record);
685 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME;
688 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) {
689 // See comments at ASTDeclReader::VisitCXXRecordDecl about why this happens
690 // before VisitRecordDecl.
691 enum { Data_NoDefData, Data_Owner, Data_NotOwner };
692 bool OwnsDefinitionData = false;
693 if (D->DefinitionData) {
694 assert(D->DefinitionData->Definition &&
695 "DefinitionData don't point to a definition decl!");
696 OwnsDefinitionData = D->DefinitionData->Definition == D;
697 if (OwnsDefinitionData) {
698 Record.push_back(Data_Owner);
700 Record.push_back(Data_NotOwner);
701 Writer.AddDeclRef(D->DefinitionData->Definition, Record);
704 Record.push_back(Data_NoDefData);
708 if (OwnsDefinitionData) {
709 assert(D->DefinitionData);
710 struct CXXRecordDecl::DefinitionData &Data = *D->DefinitionData;
712 Record.push_back(Data.UserDeclaredConstructor);
713 Record.push_back(Data.UserDeclaredCopyConstructor);
714 Record.push_back(Data.UserDeclaredCopyAssignment);
715 Record.push_back(Data.UserDeclaredDestructor);
716 Record.push_back(Data.Aggregate);
717 Record.push_back(Data.PlainOldData);
718 Record.push_back(Data.Empty);
719 Record.push_back(Data.Polymorphic);
720 Record.push_back(Data.Abstract);
721 Record.push_back(Data.HasTrivialConstructor);
722 Record.push_back(Data.HasTrivialCopyConstructor);
723 Record.push_back(Data.HasTrivialCopyAssignment);
724 Record.push_back(Data.HasTrivialDestructor);
725 Record.push_back(Data.ComputedVisibleConversions);
726 Record.push_back(Data.DeclaredDefaultConstructor);
727 Record.push_back(Data.DeclaredCopyConstructor);
728 Record.push_back(Data.DeclaredCopyAssignment);
729 Record.push_back(Data.DeclaredDestructor);
731 Record.push_back(D->getNumBases());
732 for (CXXRecordDecl::base_class_iterator I = D->bases_begin(),
733 E = D->bases_end(); I != E; ++I)
734 Writer.AddCXXBaseSpecifier(*I, Record);
736 // FIXME: Make VBases lazily computed when needed to avoid storing them.
737 Record.push_back(D->getNumVBases());
738 for (CXXRecordDecl::base_class_iterator I = D->vbases_begin(),
739 E = D->vbases_end(); I != E; ++I)
740 Writer.AddCXXBaseSpecifier(*I, Record);
742 Writer.AddUnresolvedSet(Data.Conversions, Record);
743 Writer.AddUnresolvedSet(Data.VisibleConversions, Record);
744 // Data.Definition is written at the top.
745 Writer.AddDeclRef(Data.FirstFriend, Record);
749 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
751 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) {
752 Record.push_back(CXXRecTemplate);
753 Writer.AddDeclRef(TemplD, Record);
754 } else if (MemberSpecializationInfo *MSInfo
755 = D->getMemberSpecializationInfo()) {
756 Record.push_back(CXXRecMemberSpecialization);
757 Writer.AddDeclRef(MSInfo->getInstantiatedFrom(), Record);
758 Record.push_back(MSInfo->getTemplateSpecializationKind());
759 Writer.AddSourceLocation(MSInfo->getPointOfInstantiation(), Record);
761 Record.push_back(CXXRecNotTemplate);
764 Code = serialization::DECL_CXX_RECORD;
767 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) {
768 VisitFunctionDecl(D);
769 Record.push_back(D->size_overridden_methods());
770 for (CXXMethodDecl::method_iterator
771 I = D->begin_overridden_methods(), E = D->end_overridden_methods();
773 Writer.AddDeclRef(*I, Record);
774 Code = serialization::DECL_CXX_METHOD;
777 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
778 VisitCXXMethodDecl(D);
780 Record.push_back(D->IsExplicitSpecified);
781 Record.push_back(D->ImplicitlyDefined);
782 Writer.AddCXXBaseOrMemberInitializers(D->BaseOrMemberInitializers,
783 D->NumBaseOrMemberInitializers, Record);
785 Code = serialization::DECL_CXX_CONSTRUCTOR;
788 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
789 VisitCXXMethodDecl(D);
791 Record.push_back(D->ImplicitlyDefined);
792 Writer.AddDeclRef(D->OperatorDelete, Record);
794 Code = serialization::DECL_CXX_DESTRUCTOR;
797 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) {
798 VisitCXXMethodDecl(D);
799 Record.push_back(D->IsExplicitSpecified);
800 Code = serialization::DECL_CXX_CONVERSION;
803 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) {
805 Writer.AddSourceLocation(D->getColonLoc(), Record);
806 Code = serialization::DECL_ACCESS_SPEC;
809 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) {
811 Record.push_back(D->Friend.is<TypeSourceInfo*>());
812 if (D->Friend.is<TypeSourceInfo*>())
813 Writer.AddTypeSourceInfo(D->Friend.get<TypeSourceInfo*>(), Record);
815 Writer.AddDeclRef(D->Friend.get<NamedDecl*>(), Record);
816 Writer.AddDeclRef(D->NextFriend, Record);
817 Writer.AddSourceLocation(D->FriendLoc, Record);
818 Code = serialization::DECL_FRIEND;
821 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
823 Record.push_back(D->getNumTemplateParameters());
824 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i)
825 Writer.AddTemplateParameterList(D->getTemplateParameterList(i), Record);
826 Record.push_back(D->getFriendDecl() != 0);
827 if (D->getFriendDecl())
828 Writer.AddDeclRef(D->getFriendDecl(), Record);
830 Writer.AddTypeSourceInfo(D->getFriendType(), Record);
831 Writer.AddSourceLocation(D->getFriendLoc(), Record);
832 Code = serialization::DECL_FRIEND_TEMPLATE;
835 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) {
838 Writer.AddDeclRef(D->getTemplatedDecl(), Record);
839 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record);
842 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
843 VisitTemplateDecl(D);
845 Record.push_back(D->getIdentifierNamespace());
846 Writer.AddDeclRef(D->getPreviousDeclaration(), Record);
847 if (D->getPreviousDeclaration() == 0) {
848 // This TemplateDecl owns the CommonPtr; write it.
849 assert(D->isCanonicalDecl());
851 Writer.AddDeclRef(D->getInstantiatedFromMemberTemplate(), Record);
852 if (D->getInstantiatedFromMemberTemplate())
853 Record.push_back(D->isMemberSpecialization());
855 Writer.AddDeclRef(D->getCommonPtr()->Latest, Record);
857 RedeclarableTemplateDecl *First = D->getFirstDeclaration();
859 // If this is a most recent redeclaration that is pointed to by a first decl
860 // in a chained PCH, keep track of the association with the map so we can
861 // update the first decl during AST reading.
862 if (First->getMostRecentDeclaration() == D &&
863 First->getPCHLevel() > D->getPCHLevel()) {
864 assert(Writer.FirstLatestDecls.find(First)==Writer.FirstLatestDecls.end()
865 && "The latest is already set");
866 Writer.FirstLatestDecls[First] = D;
871 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) {
872 VisitRedeclarableTemplateDecl(D);
874 if (D->getPreviousDeclaration() == 0) {
875 typedef llvm::FoldingSet<ClassTemplateSpecializationDecl> CTSDSetTy;
876 CTSDSetTy &CTSDSet = D->getSpecializations();
877 Record.push_back(CTSDSet.size());
878 for (CTSDSetTy::iterator I=CTSDSet.begin(), E = CTSDSet.end(); I!=E; ++I) {
879 assert(I->isCanonicalDecl() && "Expected only canonical decls in set");
880 Writer.AddDeclRef(&*I, Record);
883 typedef llvm::FoldingSet<ClassTemplatePartialSpecializationDecl> CTPSDSetTy;
884 CTPSDSetTy &CTPSDSet = D->getPartialSpecializations();
885 Record.push_back(CTPSDSet.size());
886 for (CTPSDSetTy::iterator I=CTPSDSet.begin(), E=CTPSDSet.end(); I!=E; ++I) {
887 assert(I->isCanonicalDecl() && "Expected only canonical decls in set");
888 Writer.AddDeclRef(&*I, Record);
891 // InjectedClassNameType is computed, no need to write it.
893 Code = serialization::DECL_CLASS_TEMPLATE;
896 void ASTDeclWriter::VisitClassTemplateSpecializationDecl(
897 ClassTemplateSpecializationDecl *D) {
898 VisitCXXRecordDecl(D);
900 llvm::PointerUnion<ClassTemplateDecl *,
901 ClassTemplatePartialSpecializationDecl *> InstFrom
902 = D->getSpecializedTemplateOrPartial();
904 if (InstFrom.is<ClassTemplateDecl *>()) {
905 InstFromD = InstFrom.get<ClassTemplateDecl *>();
906 Writer.AddDeclRef(InstFromD, Record);
908 InstFromD = InstFrom.get<ClassTemplatePartialSpecializationDecl *>();
909 Writer.AddDeclRef(InstFromD, Record);
910 Writer.AddTemplateArgumentList(&D->getTemplateInstantiationArgs(), Record);
911 InstFromD = cast<ClassTemplatePartialSpecializationDecl>(InstFromD)->
912 getSpecializedTemplate();
914 // Is this a specialization of an already-serialized template?
915 if (InstFromD->getCanonicalDecl()->getPCHLevel() != 0)
916 Writer.AddAdditionalTemplateSpecialization(Writer.getDeclID(InstFromD),
917 Writer.getDeclID(D));
920 Writer.AddTypeSourceInfo(D->getTypeAsWritten(), Record);
921 if (D->getTypeAsWritten()) {
922 Writer.AddSourceLocation(D->getExternLoc(), Record);
923 Writer.AddSourceLocation(D->getTemplateKeywordLoc(), Record);
926 Writer.AddTemplateArgumentList(&D->getTemplateArgs(), Record);
927 Writer.AddSourceLocation(D->getPointOfInstantiation(), Record);
928 Record.push_back(D->getSpecializationKind());
930 if (D->isCanonicalDecl()) {
931 // When reading, we'll add it to the folding set of the following template.
932 Writer.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl(), Record);
935 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION;
938 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl(
939 ClassTemplatePartialSpecializationDecl *D) {
940 VisitClassTemplateSpecializationDecl(D);
942 Writer.AddTemplateParameterList(D->getTemplateParameters(), Record);
944 Record.push_back(D->getNumTemplateArgsAsWritten());
945 for (int i = 0, e = D->getNumTemplateArgsAsWritten(); i != e; ++i)
946 Writer.AddTemplateArgumentLoc(D->getTemplateArgsAsWritten()[i], Record);
948 Record.push_back(D->getSequenceNumber());
950 // These are read/set from/to the first declaration.
951 if (D->getPreviousDeclaration() == 0) {
952 Writer.AddDeclRef(D->getInstantiatedFromMember(), Record);
953 Record.push_back(D->isMemberSpecialization());
956 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION;
959 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
960 VisitRedeclarableTemplateDecl(D);
962 if (D->getPreviousDeclaration() == 0) {
963 // This FunctionTemplateDecl owns the CommonPtr; write it.
965 // Write the function specialization declarations.
966 Record.push_back(D->getSpecializations().size());
967 for (llvm::FoldingSet<FunctionTemplateSpecializationInfo>::iterator
968 I = D->getSpecializations().begin(),
969 E = D->getSpecializations().end() ; I != E; ++I) {
970 assert(I->Function->isCanonicalDecl() &&
971 "Expected only canonical decls in set");
972 Writer.AddDeclRef(I->Function, Record);
975 Code = serialization::DECL_FUNCTION_TEMPLATE;
978 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
981 Record.push_back(D->wasDeclaredWithTypename());
982 Record.push_back(D->isParameterPack());
983 Record.push_back(D->defaultArgumentWasInherited());
984 Writer.AddTypeSourceInfo(D->getDefaultArgumentInfo(), Record);
986 Code = serialization::DECL_TEMPLATE_TYPE_PARM;
989 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
991 // TemplateParmPosition.
992 Record.push_back(D->getDepth());
993 Record.push_back(D->getPosition());
994 // Rest of NonTypeTemplateParmDecl.
995 Record.push_back(D->getDefaultArgument() != 0);
996 if (D->getDefaultArgument()) {
997 Writer.AddStmt(D->getDefaultArgument());
998 Record.push_back(D->defaultArgumentWasInherited());
1000 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM;
1003 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
1004 VisitTemplateDecl(D);
1005 // TemplateParmPosition.
1006 Record.push_back(D->getDepth());
1007 Record.push_back(D->getPosition());
1008 // Rest of TemplateTemplateParmDecl.
1009 Writer.AddTemplateArgumentLoc(D->getDefaultArgument(), Record);
1010 Record.push_back(D->defaultArgumentWasInherited());
1011 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM;
1014 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) {
1016 Writer.AddStmt(D->getAssertExpr());
1017 Writer.AddStmt(D->getMessage());
1018 Code = serialization::DECL_STATIC_ASSERT;
1021 /// \brief Emit the DeclContext part of a declaration context decl.
1023 /// \param LexicalOffset the offset at which the DECL_CONTEXT_LEXICAL
1024 /// block for this declaration context is stored. May be 0 to indicate
1025 /// that there are no declarations stored within this context.
1027 /// \param VisibleOffset the offset at which the DECL_CONTEXT_VISIBLE
1028 /// block for this declaration context is stored. May be 0 to indicate
1029 /// that there are no declarations visible from this context. Note
1030 /// that this value will not be emitted for non-primary declaration
1032 void ASTDeclWriter::VisitDeclContext(DeclContext *DC, uint64_t LexicalOffset,
1033 uint64_t VisibleOffset) {
1034 Record.push_back(LexicalOffset);
1035 Record.push_back(VisibleOffset);
1038 template <typename T>
1039 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) {
1040 enum { NoRedeclaration = 0, PointsToPrevious, PointsToLatest };
1041 if (D->RedeclLink.getNext() == D) {
1042 Record.push_back(NoRedeclaration);
1044 Record.push_back(D->RedeclLink.NextIsPrevious() ? PointsToPrevious
1046 Writer.AddDeclRef(D->RedeclLink.getPointer(), Record);
1049 T *First = D->getFirstDeclaration();
1050 T *ThisDecl = static_cast<T*>(D);
1051 // If this is a most recent redeclaration that is pointed to by a first decl
1052 // in a chained PCH, keep track of the association with the map so we can
1053 // update the first decl during AST reading.
1054 if (ThisDecl != First && First->getMostRecentDeclaration() == ThisDecl &&
1055 First->getPCHLevel() > ThisDecl->getPCHLevel()) {
1056 assert(Writer.FirstLatestDecls.find(First) == Writer.FirstLatestDecls.end()
1057 && "The latest is already set");
1058 Writer.FirstLatestDecls[First] = ThisDecl;
1062 //===----------------------------------------------------------------------===//
1063 // ASTWriter Implementation
1064 //===----------------------------------------------------------------------===//
1066 void ASTWriter::WriteDeclsBlockAbbrevs() {
1067 using namespace llvm;
1068 // Abbreviation for DECL_PARM_VAR.
1069 BitCodeAbbrev *Abv = new BitCodeAbbrev();
1070 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR));
1073 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1074 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalDeclContext
1075 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
1076 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl (!?)
1077 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1078 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1079 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1080 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
1081 Abv->Add(BitCodeAbbrevOp(0)); // PCH level
1084 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1085 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1087 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1089 Abv->Add(BitCodeAbbrevOp(serialization::PREDEF_TYPE_NULL_ID)); // InfoType
1091 Abv->Add(BitCodeAbbrevOp(0)); // StorageClass
1092 Abv->Add(BitCodeAbbrevOp(0)); // StorageClassAsWritten
1093 Abv->Add(BitCodeAbbrevOp(0)); // isThreadSpecified
1094 Abv->Add(BitCodeAbbrevOp(0)); // hasCXXDirectInitializer
1095 Abv->Add(BitCodeAbbrevOp(0)); // isExceptionVariable
1096 Abv->Add(BitCodeAbbrevOp(0)); // isNRVOVariable
1097 Abv->Add(BitCodeAbbrevOp(0)); // PrevDecl
1098 Abv->Add(BitCodeAbbrevOp(0)); // HasInit
1099 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo
1101 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier
1102 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg
1103 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg
1105 ParmVarDeclAbbrev = Stream.EmitAbbrev(Abv);
1107 Abv = new BitCodeAbbrev();
1108 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL));
1109 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
1110 DeclContextLexicalAbbrev = Stream.EmitAbbrev(Abv);
1112 Abv = new BitCodeAbbrev();
1113 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE));
1114 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1115 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
1116 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(Abv);
1119 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by
1120 /// consumers of the AST.
1122 /// Such decls will always be deserialized from the AST file, so we would like
1123 /// this to be as restrictive as possible. Currently the predicate is driven by
1124 /// code generation requirements, if other clients have a different notion of
1125 /// what is "required" then we may have to consider an alternate scheme where
1126 /// clients can iterate over the top-level decls and get information on them,
1127 /// without necessary deserializing them. We could explicitly require such
1128 /// clients to use a separate API call to "realize" the decl. This should be
1129 /// relatively painless since they would presumably only do it for top-level
1131 static bool isRequiredDecl(const Decl *D, ASTContext &Context) {
1132 // File scoped assembly or obj-c implementation must be seen.
1133 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplementationDecl>(D))
1136 return Context.DeclMustBeEmitted(D);
1139 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) {
1141 ASTDeclWriter W(*this, Context, Record);
1143 // If this declaration is also a DeclContext, write blocks for the
1144 // declarations that lexically stored inside its context and those
1145 // declarations that are visible from its context. These blocks
1146 // are written before the declaration itself so that we can put
1147 // their offsets into the record for the declaration.
1148 uint64_t LexicalOffset = 0;
1149 uint64_t VisibleOffset = 0;
1150 DeclContext *DC = dyn_cast<DeclContext>(D);
1152 LexicalOffset = WriteDeclContextLexicalBlock(Context, DC);
1153 VisibleOffset = WriteDeclContextVisibleBlock(Context, DC);
1156 // Determine the ID for this declaration
1157 serialization::DeclID &IDR = DeclIDs[D];
1160 serialization::DeclID ID = IDR;
1162 if (ID < FirstDeclID) {
1163 // We're replacing a decl in a previous file.
1164 ReplacedDecls.push_back(std::make_pair(ID, Stream.GetCurrentBitNo()));
1166 unsigned Index = ID - FirstDeclID;
1168 // Record the offset for this declaration
1169 if (DeclOffsets.size() == Index)
1170 DeclOffsets.push_back(Stream.GetCurrentBitNo());
1171 else if (DeclOffsets.size() < Index) {
1172 DeclOffsets.resize(Index+1);
1173 DeclOffsets[Index] = Stream.GetCurrentBitNo();
1177 // Build and emit a record for this declaration
1179 W.Code = (serialization::DeclCode)0;
1182 if (DC) W.VisitDeclContext(DC, LexicalOffset, VisibleOffset);
1185 llvm::report_fatal_error(llvm::StringRef("unexpected declaration kind '") +
1186 D->getDeclKindName() + "'");
1187 Stream.EmitRecord(W.Code, Record, W.AbbrevToUse);
1189 // If the declaration had any attributes, write them now.
1191 WriteAttributeRecord(D->getAttrs());
1193 // Flush any expressions that were written as part of this declaration.
1196 // Note "external" declarations so that we can add them to a record in the
1199 // FIXME: This should be renamed, the predicate is much more complicated.
1200 if (isRequiredDecl(D, Context))
1201 ExternalDefinitions.push_back(ID);