MultiplexConsumer.cpp revision 88c2596edc8eb475e20f6033de1ea01669695a0c 
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
22using namespace clang;
23
24namespace clang {
25
26// This ASTDeserializationListener forwards its notifications to a set of
27// child listeners.
28class MultiplexASTDeserializationListener
29    : public ASTDeserializationListener {
30public:
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::PreprocessedEntityID,
41                                   MacroDefinition *MD);
42private:
43  std::vector<ASTDeserializationListener*> Listeners;
44};
45
46MultiplexASTDeserializationListener::MultiplexASTDeserializationListener(
47      const std::vector<ASTDeserializationListener*>& L)
48    : Listeners(L) {
49}
50
51void MultiplexASTDeserializationListener::ReaderInitialized(
52    ASTReader *Reader) {
53  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
54    Listeners[i]->ReaderInitialized(Reader);
55}
56
57void 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
63void 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
69void 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
75void 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
81void MultiplexASTDeserializationListener::MacroDefinitionRead(
82    serialization::PreprocessedEntityID 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.
89class MultiplexASTMutationListener : public ASTMutationListener {
90public:
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  virtual void AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD,
99                                              const FunctionDecl *D);
100  virtual void CompletedImplicitDefinition(const FunctionDecl *D);
101  virtual void StaticDataMemberInstantiated(const VarDecl *D);
102private:
103  std::vector<ASTMutationListener*> Listeners;
104};
105
106MultiplexASTMutationListener::MultiplexASTMutationListener(
107    const std::vector<ASTMutationListener*>& L)
108    : Listeners(L) {
109}
110
111void MultiplexASTMutationListener::CompletedTagDefinition(const TagDecl *D) {
112  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
113    Listeners[i]->CompletedTagDefinition(D);
114}
115
116void MultiplexASTMutationListener::AddedVisibleDecl(
117    const DeclContext *DC, const Decl *D) {
118  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
119    Listeners[i]->AddedVisibleDecl(DC, D);
120}
121
122void MultiplexASTMutationListener::AddedCXXImplicitMember(
123    const CXXRecordDecl *RD, const Decl *D) {
124  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
125    Listeners[i]->AddedCXXImplicitMember(RD, D);
126}
127void MultiplexASTMutationListener::AddedCXXTemplateSpecialization(
128    const ClassTemplateDecl *TD, const ClassTemplateSpecializationDecl *D) {
129  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
130    Listeners[i]->AddedCXXTemplateSpecialization(TD, D);
131}
132void MultiplexASTMutationListener::AddedCXXTemplateSpecialization(
133    const FunctionTemplateDecl *TD, const FunctionDecl *D) {
134  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
135    Listeners[i]->AddedCXXTemplateSpecialization(TD, D);
136}
137void MultiplexASTMutationListener::CompletedImplicitDefinition(
138                                                        const FunctionDecl *D) {
139  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
140    Listeners[i]->CompletedImplicitDefinition(D);
141}
142void MultiplexASTMutationListener::StaticDataMemberInstantiated(
143                                                             const VarDecl *D) {
144  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
145    Listeners[i]->StaticDataMemberInstantiated(D);
146}
147
148}  // end namespace clang
149
150
151MultiplexConsumer::MultiplexConsumer(const std::vector<ASTConsumer*>& C)
152    : Consumers(C), MutationListener(0), DeserializationListener(0) {
153  // Collect the mutation listeners and deserialization listeners of all
154  // children, and create a multiplex listener each if so.
155  std::vector<ASTMutationListener*> mutationListeners;
156  std::vector<ASTDeserializationListener*> serializationListeners;
157  for (size_t i = 0, e = Consumers.size(); i != e; ++i) {
158    ASTMutationListener* mutationListener =
159        Consumers[i]->GetASTMutationListener();
160    if (mutationListener)
161      mutationListeners.push_back(mutationListener);
162    ASTDeserializationListener* serializationListener =
163        Consumers[i]->GetASTDeserializationListener();
164    if (serializationListener)
165      serializationListeners.push_back(serializationListener);
166  }
167  if (mutationListeners.size()) {
168    MutationListener.reset(new MultiplexASTMutationListener(mutationListeners));
169  }
170  if (serializationListeners.size()) {
171    DeserializationListener.reset(
172        new MultiplexASTDeserializationListener(serializationListeners));
173  }
174}
175
176MultiplexConsumer::~MultiplexConsumer() {
177  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
178    delete Consumers[i];
179}
180
181void MultiplexConsumer::Initialize(ASTContext &Context) {
182  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
183    Consumers[i]->Initialize(Context);
184}
185
186bool MultiplexConsumer::HandleTopLevelDecl(DeclGroupRef D) {
187  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
188    Consumers[i]->HandleTopLevelDecl(D);
189  return true;
190}
191
192void MultiplexConsumer::HandleInterestingDecl(DeclGroupRef D) {
193  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
194    Consumers[i]->HandleInterestingDecl(D);
195}
196
197void MultiplexConsumer::HandleTranslationUnit(ASTContext &Ctx) {
198  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
199    Consumers[i]->HandleTranslationUnit(Ctx);
200}
201
202void MultiplexConsumer::HandleTagDeclDefinition(TagDecl *D) {
203  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
204    Consumers[i]->HandleTagDeclDefinition(D);
205}
206
207void MultiplexConsumer::CompleteTentativeDefinition(VarDecl *D) {
208  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
209    Consumers[i]->CompleteTentativeDefinition(D);
210}
211
212void MultiplexConsumer::HandleVTable(
213    CXXRecordDecl *RD, bool DefinitionRequired) {
214  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
215    Consumers[i]->HandleVTable(RD, DefinitionRequired);
216}
217
218ASTMutationListener *MultiplexConsumer::GetASTMutationListener() {
219  return MutationListener.get();
220}
221
222ASTDeserializationListener *MultiplexConsumer::GetASTDeserializationListener() {
223  return DeserializationListener.get();
224}
225
226void MultiplexConsumer::PrintStats() {
227  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
228    Consumers[i]->PrintStats();
229}
230
231void MultiplexConsumer::InitializeSema(Sema &S) {
232  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
233    if (SemaConsumer *SC = dyn_cast<SemaConsumer>(Consumers[i]))
234      SC->InitializeSema(S);
235}
236
237void MultiplexConsumer::ForgetSema() {
238  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
239    if (SemaConsumer *SC = dyn_cast<SemaConsumer>(Consumers[i]))
240      SC->ForgetSema();
241}
242