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      1 //===--- MultiplexExternalSemaSource.cpp  ---------------------------------===//
      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 the event dispatching to the subscribed clients.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 #include "clang/Sema/MultiplexExternalSemaSource.h"
     14 #include "clang/AST/DeclContextInternals.h"
     15 #include "clang/Sema/Lookup.h"
     16 
     17 using namespace clang;
     18 
     19 ///\brief Constructs a new multiplexing external sema source and appends the
     20 /// given element to it.
     21 ///
     22 ///\param[in] source - An ExternalSemaSource.
     23 ///
     24 MultiplexExternalSemaSource::MultiplexExternalSemaSource(ExternalSemaSource &s1,
     25                                                         ExternalSemaSource &s2){
     26   Sources.push_back(&s1);
     27   Sources.push_back(&s2);
     28 }
     29 
     30 // pin the vtable here.
     31 MultiplexExternalSemaSource::~MultiplexExternalSemaSource() {}
     32 
     33 ///\brief Appends new source to the source list.
     34 ///
     35 ///\param[in] source - An ExternalSemaSource.
     36 ///
     37 void MultiplexExternalSemaSource::addSource(ExternalSemaSource &source) {
     38   Sources.push_back(&source);
     39 }
     40 
     41 //===----------------------------------------------------------------------===//
     42 // ExternalASTSource.
     43 //===----------------------------------------------------------------------===//
     44 
     45 Decl *MultiplexExternalSemaSource::GetExternalDecl(uint32_t ID) {
     46   for(size_t i = 0; i < Sources.size(); ++i)
     47     if (Decl *Result = Sources[i]->GetExternalDecl(ID))
     48       return Result;
     49   return 0;
     50 }
     51 
     52 Selector MultiplexExternalSemaSource::GetExternalSelector(uint32_t ID) {
     53   Selector Sel;
     54   for(size_t i = 0; i < Sources.size(); ++i) {
     55     Sel = Sources[i]->GetExternalSelector(ID);
     56     if (!Sel.isNull())
     57       return Sel;
     58   }
     59   return Sel;
     60 }
     61 
     62 uint32_t MultiplexExternalSemaSource::GetNumExternalSelectors() {
     63   uint32_t total = 0;
     64   for(size_t i = 0; i < Sources.size(); ++i)
     65     total += Sources[i]->GetNumExternalSelectors();
     66   return total;
     67 }
     68 
     69 Stmt *MultiplexExternalSemaSource::GetExternalDeclStmt(uint64_t Offset) {
     70   for(size_t i = 0; i < Sources.size(); ++i)
     71     if (Stmt *Result = Sources[i]->GetExternalDeclStmt(Offset))
     72       return Result;
     73   return 0;
     74 }
     75 
     76 CXXBaseSpecifier *MultiplexExternalSemaSource::GetExternalCXXBaseSpecifiers(
     77                                                                uint64_t Offset){
     78   for(size_t i = 0; i < Sources.size(); ++i)
     79     if (CXXBaseSpecifier *R = Sources[i]->GetExternalCXXBaseSpecifiers(Offset))
     80       return R;
     81   return 0;
     82 }
     83 
     84 bool MultiplexExternalSemaSource::
     85 FindExternalVisibleDeclsByName(const DeclContext *DC, DeclarationName Name) {
     86   bool AnyDeclsFound = false;
     87   for (size_t i = 0; i < Sources.size(); ++i)
     88     AnyDeclsFound |= Sources[i]->FindExternalVisibleDeclsByName(DC, Name);
     89   return AnyDeclsFound;
     90 }
     91 
     92 void MultiplexExternalSemaSource::completeVisibleDeclsMap(const DeclContext *DC){
     93   for(size_t i = 0; i < Sources.size(); ++i)
     94     Sources[i]->completeVisibleDeclsMap(DC);
     95 }
     96 
     97 ExternalLoadResult MultiplexExternalSemaSource::
     98 FindExternalLexicalDecls(const DeclContext *DC,
     99                          bool (*isKindWeWant)(Decl::Kind),
    100                          SmallVectorImpl<Decl*> &Result) {
    101   for(size_t i = 0; i < Sources.size(); ++i)
    102     // FIXME: The semantics of the return result is unclear to me...
    103     Sources[i]->FindExternalLexicalDecls(DC, isKindWeWant, Result);
    104 
    105   return ELR_Success;
    106 }
    107 
    108 void MultiplexExternalSemaSource::FindFileRegionDecls(FileID File,
    109                                                       unsigned Offset,
    110                                                       unsigned Length,
    111                                                 SmallVectorImpl<Decl *> &Decls){
    112   for(size_t i = 0; i < Sources.size(); ++i)
    113     Sources[i]->FindFileRegionDecls(File, Offset, Length, Decls);
    114 }
    115 
    116 void MultiplexExternalSemaSource::CompleteType(TagDecl *Tag) {
    117   for(size_t i = 0; i < Sources.size(); ++i)
    118     Sources[i]->CompleteType(Tag);
    119 }
    120 
    121 void MultiplexExternalSemaSource::CompleteType(ObjCInterfaceDecl *Class) {
    122   for(size_t i = 0; i < Sources.size(); ++i)
    123     Sources[i]->CompleteType(Class);
    124 }
    125 
    126 void MultiplexExternalSemaSource::ReadComments() {
    127   for(size_t i = 0; i < Sources.size(); ++i)
    128     Sources[i]->ReadComments();
    129 }
    130 
    131 void MultiplexExternalSemaSource::StartedDeserializing() {
    132   for(size_t i = 0; i < Sources.size(); ++i)
    133     Sources[i]->StartedDeserializing();
    134 }
    135 
    136 void MultiplexExternalSemaSource::FinishedDeserializing() {
    137   for(size_t i = 0; i < Sources.size(); ++i)
    138     Sources[i]->FinishedDeserializing();
    139 }
    140 
    141 void MultiplexExternalSemaSource::StartTranslationUnit(ASTConsumer *Consumer) {
    142   for(size_t i = 0; i < Sources.size(); ++i)
    143     Sources[i]->StartTranslationUnit(Consumer);
    144 }
    145 
    146 void MultiplexExternalSemaSource::PrintStats() {
    147   for(size_t i = 0; i < Sources.size(); ++i)
    148     Sources[i]->PrintStats();
    149 }
    150 
    151 bool MultiplexExternalSemaSource::layoutRecordType(const RecordDecl *Record,
    152                                                    uint64_t &Size,
    153                                                    uint64_t &Alignment,
    154                       llvm::DenseMap<const FieldDecl *, uint64_t> &FieldOffsets,
    155                   llvm::DenseMap<const CXXRecordDecl *, CharUnits> &BaseOffsets,
    156           llvm::DenseMap<const CXXRecordDecl *, CharUnits> &VirtualBaseOffsets){
    157   for(size_t i = 0; i < Sources.size(); ++i)
    158     if (Sources[i]->layoutRecordType(Record, Size, Alignment, FieldOffsets,
    159                                      BaseOffsets, VirtualBaseOffsets))
    160       return true;
    161   return false;
    162 }
    163 
    164 void MultiplexExternalSemaSource::
    165 getMemoryBufferSizes(MemoryBufferSizes &sizes) const {
    166   for(size_t i = 0; i < Sources.size(); ++i)
    167     Sources[i]->getMemoryBufferSizes(sizes);
    168 
    169 }
    170 
    171 //===----------------------------------------------------------------------===//
    172 // ExternalSemaSource.
    173 //===----------------------------------------------------------------------===//
    174 
    175 
    176 void MultiplexExternalSemaSource::InitializeSema(Sema &S) {
    177   for(size_t i = 0; i < Sources.size(); ++i)
    178     Sources[i]->InitializeSema(S);
    179 }
    180 
    181 void MultiplexExternalSemaSource::ForgetSema() {
    182   for(size_t i = 0; i < Sources.size(); ++i)
    183     Sources[i]->ForgetSema();
    184 }
    185 
    186 void MultiplexExternalSemaSource::ReadMethodPool(Selector Sel) {
    187   for(size_t i = 0; i < Sources.size(); ++i)
    188     Sources[i]->ReadMethodPool(Sel);
    189 }
    190 
    191 void MultiplexExternalSemaSource::ReadKnownNamespaces(
    192                                    SmallVectorImpl<NamespaceDecl*> &Namespaces){
    193   for(size_t i = 0; i < Sources.size(); ++i)
    194     Sources[i]->ReadKnownNamespaces(Namespaces);
    195 }
    196 
    197 void MultiplexExternalSemaSource::ReadUndefinedButUsed(
    198                          llvm::DenseMap<NamedDecl*, SourceLocation> &Undefined){
    199   for(size_t i = 0; i < Sources.size(); ++i)
    200     Sources[i]->ReadUndefinedButUsed(Undefined);
    201 }
    202 
    203 bool MultiplexExternalSemaSource::LookupUnqualified(LookupResult &R, Scope *S){
    204   for(size_t i = 0; i < Sources.size(); ++i)
    205     Sources[i]->LookupUnqualified(R, S);
    206 
    207   return !R.empty();
    208 }
    209 
    210 void MultiplexExternalSemaSource::ReadTentativeDefinitions(
    211                                      SmallVectorImpl<VarDecl*> &TentativeDefs) {
    212   for(size_t i = 0; i < Sources.size(); ++i)
    213     Sources[i]->ReadTentativeDefinitions(TentativeDefs);
    214 }
    215 
    216 void MultiplexExternalSemaSource::ReadUnusedFileScopedDecls(
    217                                 SmallVectorImpl<const DeclaratorDecl*> &Decls) {
    218   for(size_t i = 0; i < Sources.size(); ++i)
    219     Sources[i]->ReadUnusedFileScopedDecls(Decls);
    220 }
    221 
    222 void MultiplexExternalSemaSource::ReadDelegatingConstructors(
    223                                   SmallVectorImpl<CXXConstructorDecl*> &Decls) {
    224   for(size_t i = 0; i < Sources.size(); ++i)
    225     Sources[i]->ReadDelegatingConstructors(Decls);
    226 }
    227 
    228 void MultiplexExternalSemaSource::ReadExtVectorDecls(
    229                                      SmallVectorImpl<TypedefNameDecl*> &Decls) {
    230   for(size_t i = 0; i < Sources.size(); ++i)
    231     Sources[i]->ReadExtVectorDecls(Decls);
    232 }
    233 
    234 void MultiplexExternalSemaSource::ReadDynamicClasses(
    235                                        SmallVectorImpl<CXXRecordDecl*> &Decls) {
    236   for(size_t i = 0; i < Sources.size(); ++i)
    237     Sources[i]->ReadDynamicClasses(Decls);
    238 }
    239 
    240 void MultiplexExternalSemaSource::ReadLocallyScopedExternCDecls(
    241                                            SmallVectorImpl<NamedDecl*> &Decls) {
    242   for(size_t i = 0; i < Sources.size(); ++i)
    243     Sources[i]->ReadLocallyScopedExternCDecls(Decls);
    244 }
    245 
    246 void MultiplexExternalSemaSource::ReadReferencedSelectors(
    247                   SmallVectorImpl<std::pair<Selector, SourceLocation> > &Sels) {
    248   for(size_t i = 0; i < Sources.size(); ++i)
    249     Sources[i]->ReadReferencedSelectors(Sels);
    250 }
    251 
    252 void MultiplexExternalSemaSource::ReadWeakUndeclaredIdentifiers(
    253                    SmallVectorImpl<std::pair<IdentifierInfo*, WeakInfo> > &WI) {
    254   for(size_t i = 0; i < Sources.size(); ++i)
    255     Sources[i]->ReadWeakUndeclaredIdentifiers(WI);
    256 }
    257 
    258 void MultiplexExternalSemaSource::ReadUsedVTables(
    259                                   SmallVectorImpl<ExternalVTableUse> &VTables) {
    260   for(size_t i = 0; i < Sources.size(); ++i)
    261     Sources[i]->ReadUsedVTables(VTables);
    262 }
    263 
    264 void MultiplexExternalSemaSource::ReadPendingInstantiations(
    265                                            SmallVectorImpl<std::pair<ValueDecl*,
    266                                                    SourceLocation> > &Pending) {
    267   for(size_t i = 0; i < Sources.size(); ++i)
    268     Sources[i]->ReadPendingInstantiations(Pending);
    269 }
    270