1 files changed, 276 insertions, 0 deletions
diff --git a/clang/lib/Frontend/MultiplexConsumer.cpp b/clang/lib/Frontend/MultiplexConsumer.cpp
new file mode 100644
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+++ b/clang/lib/Frontend/MultiplexConsumer.cpp
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+//===- MultiplexConsumer.cpp - AST Consumer for PCH Generation --*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines the MultiplexConsumer class. It also declares and defines
+//  MultiplexASTDeserializationListener and  MultiplexASTMutationListener, which
+//  are implementation details of MultiplexConsumer.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Frontend/MultiplexConsumer.h"
+
+#include "clang/AST/ASTMutationListener.h"
+#include "clang/AST/DeclGroup.h"
+#include "clang/Serialization/ASTDeserializationListener.h"
+
+using namespace clang;
+
+namespace clang {
+
+// This ASTDeserializationListener forwards its notifications to a set of
+// child listeners.
+class MultiplexASTDeserializationListener
+    : public ASTDeserializationListener {
+public:
+  // Does NOT take ownership of the elements in L.
+  MultiplexASTDeserializationListener(
+      const std::vector<ASTDeserializationListener*>& L);
+  virtual void ReaderInitialized(ASTReader *Reader);
+  virtual void IdentifierRead(serialization::IdentID ID,
+                              IdentifierInfo *II);
+  virtual void TypeRead(serialization::TypeIdx Idx, QualType T);
+  virtual void DeclRead(serialization::DeclID ID, const Decl *D);
+  virtual void SelectorRead(serialization::SelectorID iD, Selector Sel);
+  virtual void MacroDefinitionRead(serialization::PreprocessedEntityID, 
+                                   MacroDefinition *MD);
+private:
+  std::vector<ASTDeserializationListener*> Listeners;
+};
+
+MultiplexASTDeserializationListener::MultiplexASTDeserializationListener(
+      const std::vector<ASTDeserializationListener*>& L)
+    : Listeners(L) {
+}
+
+void MultiplexASTDeserializationListener::ReaderInitialized(
+    ASTReader *Reader) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->ReaderInitialized(Reader);
+}
+
+void MultiplexASTDeserializationListener::IdentifierRead(
+    serialization::IdentID ID, IdentifierInfo *II) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->IdentifierRead(ID, II);
+}
+
+void MultiplexASTDeserializationListener::TypeRead(
+    serialization::TypeIdx Idx, QualType T) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->TypeRead(Idx, T);
+}
+
+void MultiplexASTDeserializationListener::DeclRead(
+    serialization::DeclID ID, const Decl *D) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->DeclRead(ID, D);
+}
+
+void MultiplexASTDeserializationListener::SelectorRead(
+    serialization::SelectorID ID, Selector Sel) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->SelectorRead(ID, Sel);
+}
+
+void MultiplexASTDeserializationListener::MacroDefinitionRead(
+    serialization::PreprocessedEntityID ID, MacroDefinition *MD) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->MacroDefinitionRead(ID, MD);
+}
+
+// This ASTMutationListener forwards its notifications to a set of
+// child listeners.
+class MultiplexASTMutationListener : public ASTMutationListener {
+public:
+  // Does NOT take ownership of the elements in L.
+  MultiplexASTMutationListener(ArrayRef<ASTMutationListener*> L);
+  virtual void CompletedTagDefinition(const TagDecl *D);
+  virtual void AddedVisibleDecl(const DeclContext *DC, const Decl *D);
+  virtual void AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D);
+  virtual void AddedCXXTemplateSpecialization(const ClassTemplateDecl *TD,
+                                    const ClassTemplateSpecializationDecl *D);
+  virtual void AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD,
+                                              const FunctionDecl *D);
+  virtual void CompletedImplicitDefinition(const FunctionDecl *D);
+  virtual void StaticDataMemberInstantiated(const VarDecl *D);
+  virtual void AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
+                                            const ObjCInterfaceDecl *IFD);
+  virtual void AddedObjCPropertyInClassExtension(const ObjCPropertyDecl *Prop,
+                                            const ObjCPropertyDecl *OrigProp,
+                                            const ObjCCategoryDecl *ClassExt);
+private:
+  std::vector<ASTMutationListener*> Listeners;
+};
+
+MultiplexASTMutationListener::MultiplexASTMutationListener(
+    ArrayRef<ASTMutationListener*> L)
+    : Listeners(L.begin(), L.end()) {
+}
+
+void MultiplexASTMutationListener::CompletedTagDefinition(const TagDecl *D) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->CompletedTagDefinition(D);
+}
+
+void MultiplexASTMutationListener::AddedVisibleDecl(
+    const DeclContext *DC, const Decl *D) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->AddedVisibleDecl(DC, D);
+}
+
+void MultiplexASTMutationListener::AddedCXXImplicitMember(
+    const CXXRecordDecl *RD, const Decl *D) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->AddedCXXImplicitMember(RD, D);
+}
+void MultiplexASTMutationListener::AddedCXXTemplateSpecialization(
+    const ClassTemplateDecl *TD, const ClassTemplateSpecializationDecl *D) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->AddedCXXTemplateSpecialization(TD, D);
+}
+void MultiplexASTMutationListener::AddedCXXTemplateSpecialization(
+    const FunctionTemplateDecl *TD, const FunctionDecl *D) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->AddedCXXTemplateSpecialization(TD, D);
+}
+void MultiplexASTMutationListener::CompletedImplicitDefinition(
+                                                        const FunctionDecl *D) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->CompletedImplicitDefinition(D);
+}
+void MultiplexASTMutationListener::StaticDataMemberInstantiated(
+                                                             const VarDecl *D) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->StaticDataMemberInstantiated(D);
+}
+void MultiplexASTMutationListener::AddedObjCCategoryToInterface(
+                                                 const ObjCCategoryDecl *CatD,
+                                                 const ObjCInterfaceDecl *IFD) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->AddedObjCCategoryToInterface(CatD, IFD);
+}
+void MultiplexASTMutationListener::AddedObjCPropertyInClassExtension(
+                                             const ObjCPropertyDecl *Prop,
+                                             const ObjCPropertyDecl *OrigProp,
+                                             const ObjCCategoryDecl *ClassExt) {
+  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+    Listeners[i]->AddedObjCPropertyInClassExtension(Prop, OrigProp, ClassExt);
+}
+
+}  // end namespace clang
+
+
+MultiplexConsumer::MultiplexConsumer(ArrayRef<ASTConsumer*> C)
+    : Consumers(C.begin(), C.end()),
+      MutationListener(0), DeserializationListener(0) {
+  // Collect the mutation listeners and deserialization listeners of all
+  // children, and create a multiplex listener each if so.
+  std::vector<ASTMutationListener*> mutationListeners;
+  std::vector<ASTDeserializationListener*> serializationListeners;
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i) {
+    ASTMutationListener* mutationListener =
+        Consumers[i]->GetASTMutationListener();
+    if (mutationListener)
+      mutationListeners.push_back(mutationListener);
+    ASTDeserializationListener* serializationListener =
+        Consumers[i]->GetASTDeserializationListener();
+    if (serializationListener)
+      serializationListeners.push_back(serializationListener);
+  }
+  if (mutationListeners.size()) {
+    MutationListener.reset(new MultiplexASTMutationListener(mutationListeners));
+  }
+  if (serializationListeners.size()) {
+    DeserializationListener.reset(
+        new MultiplexASTDeserializationListener(serializationListeners));
+  }
+}
+
+MultiplexConsumer::~MultiplexConsumer() {
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    delete Consumers[i];
+}
+
+void MultiplexConsumer::Initialize(ASTContext &Context) {
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    Consumers[i]->Initialize(Context);
+}
+
+bool MultiplexConsumer::HandleTopLevelDecl(DeclGroupRef D) {
+  bool Continue = true;
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    Continue = Continue && Consumers[i]->HandleTopLevelDecl(D);
+  return Continue;
+}
+
+void  MultiplexConsumer::HandleCXXStaticMemberVarInstantiation(VarDecl *VD) {
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    Consumers[i]->HandleCXXStaticMemberVarInstantiation(VD);
+}
+
+void MultiplexConsumer::HandleInterestingDecl(DeclGroupRef D) {
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    Consumers[i]->HandleInterestingDecl(D);
+}
+
+void MultiplexConsumer::HandleTranslationUnit(ASTContext &Ctx) {
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    Consumers[i]->HandleTranslationUnit(Ctx);
+}
+
+void MultiplexConsumer::HandleTagDeclDefinition(TagDecl *D) {
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    Consumers[i]->HandleTagDeclDefinition(D);
+}
+
+void MultiplexConsumer::HandleCXXImplicitFunctionInstantiation(FunctionDecl *D){
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    Consumers[i]->HandleCXXImplicitFunctionInstantiation(D);
+}
+
+void MultiplexConsumer::HandleTopLevelDeclInObjCContainer(DeclGroupRef D) {
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    Consumers[i]->HandleTopLevelDeclInObjCContainer(D);
+}
+
+void MultiplexConsumer::CompleteTentativeDefinition(VarDecl *D) {
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    Consumers[i]->CompleteTentativeDefinition(D);
+}
+
+void MultiplexConsumer::HandleVTable(
+    CXXRecordDecl *RD, bool DefinitionRequired) {
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    Consumers[i]->HandleVTable(RD, DefinitionRequired);
+}
+
+ASTMutationListener *MultiplexConsumer::GetASTMutationListener() {
+  return MutationListener.get();
+}
+
+ASTDeserializationListener *MultiplexConsumer::GetASTDeserializationListener() {
+  return DeserializationListener.get();
+}
+
+void MultiplexConsumer::PrintStats() {
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    Consumers[i]->PrintStats();
+}
+
+void MultiplexConsumer::InitializeSema(Sema &S) {
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    if (SemaConsumer *SC = dyn_cast<SemaConsumer>(Consumers[i]))
+      SC->InitializeSema(S);
+}
+
+void MultiplexConsumer::ForgetSema() {
+  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
+    if (SemaConsumer *SC = dyn_cast<SemaConsumer>(Consumers[i]))
+      SC->ForgetSema();
+}