lib/Frontend/MultiplexConsumer.cpp

   1 //===- MultiplexConsumer.cpp - AST Consumer for PCH Generation --*- C++ -*-===//
   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 defines the MultiplexConsumer class. It also declares and defines
  11 //  MultiplexASTDeserializationListener and  MultiplexASTMutationListener, which
  12 //  are implementation details of MultiplexConsumer.
  13 //
  14 //===----------------------------------------------------------------------===//
  15
  16 #include "clang/Frontend/MultiplexConsumer.h"
  17
  18 #include "clang/AST/ASTMutationListener.h"
  19 #include "clang/AST/DeclGroup.h"
  20 #include "clang/Serialization/ASTDeserializationListener.h"
  21
  22 using namespace clang;
  23
  24 namespace clang {
  25
  26 // This ASTDeserializationListener forwards its notifications to a set of
  27 // child listeners.
  28 class MultiplexASTDeserializationListener
  29     : public ASTDeserializationListener {
  30 public:
  31   // Does NOT take ownership of the elements in L.
  32   MultiplexASTDeserializationListener(
  33       const std::vector<ASTDeserializationListener*>& L);
  34   virtual void ReaderInitialized(ASTReader *Reader);
  35   virtual void IdentifierRead(serialization::IdentID ID,
  36                               IdentifierInfo *II);
  37   virtual void TypeRead(serialization::TypeIdx Idx, QualType T);
  38   virtual void DeclRead(serialization::DeclID ID, const Decl *D);
  39   virtual void SelectorRead(serialization::SelectorID iD, Selector Sel);
  40   virtual void MacroDefinitionRead(serialization::MacroID,
  41                                    MacroDefinition *MD);
  42 private:
  43   std::vector<ASTDeserializationListener*> Listeners;
  44 };
  45
  46 MultiplexASTDeserializationListener::MultiplexASTDeserializationListener(
  47       const std::vector<ASTDeserializationListener*>& L)
  48     : Listeners(L) {
  49 }
  50
  51 void MultiplexASTDeserializationListener::ReaderInitialized(
  52     ASTReader *Reader) {
  53   for (size_t i = 0, e = Listeners.size(); i != e; ++i)
  54     Listeners[i]->ReaderInitialized(Reader);
  55 }
  56
  57 void MultiplexASTDeserializationListener::IdentifierRead(
  58     serialization::IdentID ID, IdentifierInfo *II) {
  59   for (size_t i = 0, e = Listeners.size(); i != e; ++i)
  60     Listeners[i]->IdentifierRead(ID, II);
  61 }
  62
  63 void MultiplexASTDeserializationListener::TypeRead(
  64     serialization::TypeIdx Idx, QualType T) {
  65   for (size_t i = 0, e = Listeners.size(); i != e; ++i)
  66     Listeners[i]->TypeRead(Idx, T);
  67 }
  68
  69 void MultiplexASTDeserializationListener::DeclRead(
  70     serialization::DeclID ID, const Decl *D) {
  71   for (size_t i = 0, e = Listeners.size(); i != e; ++i)
  72     Listeners[i]->DeclRead(ID, D);
  73 }
  74
  75 void MultiplexASTDeserializationListener::SelectorRead(
  76     serialization::SelectorID ID, Selector Sel) {
  77   for (size_t i = 0, e = Listeners.size(); i != e; ++i)
  78     Listeners[i]->SelectorRead(ID, Sel);
  79 }
  80
  81 void MultiplexASTDeserializationListener::MacroDefinitionRead(
  82     serialization::MacroID ID, MacroDefinition *MD) {
  83   for (size_t i = 0, e = Listeners.size(); i != e; ++i)
  84     Listeners[i]->MacroDefinitionRead(ID, MD);
  85 }
  86
  87 // This ASTMutationListener forwards its notifications to a set of
  88 // child listeners.
  89 class MultiplexASTMutationListener : public ASTMutationListener {
  90 public:
  91   // Does NOT take ownership of the elements in L.
  92   MultiplexASTMutationListener(const std::vector<ASTMutationListener*>& L);
  93   virtual void CompletedTagDefinition(const TagDecl *D);
  94   virtual void AddedVisibleDecl(const DeclContext *DC, const Decl *D);
  95   virtual void AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D);
  96   virtual void AddedCXXTemplateSpecialization(const ClassTemplateDecl *TD,
  97                                     const ClassTemplateSpecializationDecl *D);
  98 private:
  99   std::vector<ASTMutationListener*> Listeners;
 100 };
 101
 102 MultiplexASTMutationListener::MultiplexASTMutationListener(
 103     const std::vector<ASTMutationListener*>& L)
 104     : Listeners(L) {
 105 }
 106
 107 void MultiplexASTMutationListener::CompletedTagDefinition(const TagDecl *D) {
 108   for (size_t i = 0, e = Listeners.size(); i != e; ++i)
 109     Listeners[i]->CompletedTagDefinition(D);
 110 }
 111
 112 void MultiplexASTMutationListener::AddedVisibleDecl(
 113     const DeclContext *DC, const Decl *D) {
 114   for (size_t i = 0, e = Listeners.size(); i != e; ++i)
 115     Listeners[i]->AddedVisibleDecl(DC, D);
 116 }
 117
 118 void MultiplexASTMutationListener::AddedCXXImplicitMember(
 119     const CXXRecordDecl *RD, const Decl *D) {
 120   for (size_t i = 0, e = Listeners.size(); i != e; ++i)
 121     Listeners[i]->AddedCXXImplicitMember(RD, D);
 122 }
 123 void MultiplexASTMutationListener::AddedCXXTemplateSpecialization(
 124     const ClassTemplateDecl *TD, const ClassTemplateSpecializationDecl *D) {
 125   for (size_t i = 0, e = Listeners.size(); i != e; ++i)
 126     Listeners[i]->AddedCXXTemplateSpecialization(TD, D);
 127 }
 128
 129 }  // end namespace clang
 130
 131
 132 MultiplexConsumer::MultiplexConsumer(const std::vector<ASTConsumer*>& C)
 133     : Consumers(C), MutationListener(0), DeserializationListener(0) {
 134   // Collect the mutation listeners and deserialization listeners of all
 135   // children, and create a multiplex listener each if so.
 136   std::vector<ASTMutationListener*> mutationListeners;
 137   std::vector<ASTDeserializationListener*> serializationListeners;
 138   for (size_t i = 0, e = Consumers.size(); i != e; ++i) {
 139     ASTMutationListener* mutationListener =
 140         Consumers[i]->GetASTMutationListener();
 141     if (mutationListener)
 142       mutationListeners.push_back(mutationListener);
 143     ASTDeserializationListener* serializationListener =
 144         Consumers[i]->GetASTDeserializationListener();
 145     if (serializationListener)
 146       serializationListeners.push_back(serializationListener);
 147   }
 148   if (mutationListeners.size()) {
 149     MutationListener.reset(new MultiplexASTMutationListener(mutationListeners));
 150   }
 151   if (serializationListeners.size()) {
 152     DeserializationListener.reset(
 153         new MultiplexASTDeserializationListener(serializationListeners));
 154   }
 155 }
 156
 157 MultiplexConsumer::~MultiplexConsumer() {
 158   for (size_t i = 0, e = Consumers.size(); i != e; ++i)
 159     delete Consumers[i];
 160 }
 161
 162 void MultiplexConsumer::Initialize(ASTContext &Context) {
 163   for (size_t i = 0, e = Consumers.size(); i != e; ++i)
 164     Consumers[i]->Initialize(Context);
 165 }
 166
 167 void MultiplexConsumer::HandleTopLevelDecl(DeclGroupRef D) {
 168   for (size_t i = 0, e = Consumers.size(); i != e; ++i)
 169     Consumers[i]->HandleTopLevelDecl(D);
 170 }
 171
 172 void MultiplexConsumer::HandleInterestingDecl(DeclGroupRef D) {
 173   for (size_t i = 0, e = Consumers.size(); i != e; ++i)
 174     Consumers[i]->HandleInterestingDecl(D);
 175 }
 176
 177 void MultiplexConsumer::HandleTranslationUnit(ASTContext &Ctx) {
 178   for (size_t i = 0, e = Consumers.size(); i != e; ++i)
 179     Consumers[i]->HandleTranslationUnit(Ctx);
 180 }
 181
 182 void MultiplexConsumer::HandleTagDeclDefinition(TagDecl *D) {
 183   for (size_t i = 0, e = Consumers.size(); i != e; ++i)
 184     Consumers[i]->HandleTagDeclDefinition(D);
 185 }
 186
 187 void MultiplexConsumer::CompleteTentativeDefinition(VarDecl *D) {
 188   for (size_t i = 0, e = Consumers.size(); i != e; ++i)
 189     Consumers[i]->CompleteTentativeDefinition(D);
 190 }
 191
 192 void MultiplexConsumer::HandleVTable(
 193     CXXRecordDecl *RD, bool DefinitionRequired) {
 194   for (size_t i = 0, e = Consumers.size(); i != e; ++i)
 195     Consumers[i]->HandleVTable(RD, DefinitionRequired);
 196 }
 197
 198 ASTMutationListener *MultiplexConsumer::GetASTMutationListener() {
 199   return MutationListener.get();
 200 }
 201
 202 ASTDeserializationListener *MultiplexConsumer::GetASTDeserializationListener() {
 203   return DeserializationListener.get();
 204 }
 205
 206 void MultiplexConsumer::PrintStats() {
 207   for (size_t i = 0, e = Consumers.size(); i != e; ++i)
 208     Consumers[i]->PrintStats();
 209 }
 210
 211 void MultiplexConsumer::InitializeSema(Sema &S) {
 212   for (size_t i = 0, e = Consumers.size(); i != e; ++i)
 213     if (SemaConsumer *SC = dyn_cast<SemaConsumer>(Consumers[i]))
 214       SC->InitializeSema(S);
 215 }
 216
 217 void MultiplexConsumer::ForgetSema() {
 218   for (size_t i = 0, e = Consumers.size(); i != e; ++i)
 219     if (SemaConsumer *SC = dyn_cast<SemaConsumer>(Consumers[i]))
 220       SC->ForgetSema();
 221 }