MultiplexConsumer.cpp revision 5aa74affa5d61d04c4b034b3722ca41aec0cba6e 
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::MacroID,
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::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.
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);
98private:
99  std::vector<ASTMutationListener*> Listeners;
100};
101
102MultiplexASTMutationListener::MultiplexASTMutationListener(
103    const std::vector<ASTMutationListener*>& L)
104    : Listeners(L) {
105}
106
107void MultiplexASTMutationListener::CompletedTagDefinition(const TagDecl *D) {
108  for (size_t i = 0, e = Listeners.size(); i != e; ++i)
109    Listeners[i]->CompletedTagDefinition(D);
110}
111
112void 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
118void 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}
123void 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
132MultiplexConsumer::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
157MultiplexConsumer::~MultiplexConsumer() {
158  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
159    delete Consumers[i];
160}
161
162void MultiplexConsumer::Initialize(ASTContext &Context) {
163  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
164    Consumers[i]->Initialize(Context);
165}
166
167void MultiplexConsumer::HandleTopLevelDecl(DeclGroupRef D) {
168  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
169    Consumers[i]->HandleTopLevelDecl(D);
170}
171
172void MultiplexConsumer::HandleInterestingDecl(DeclGroupRef D) {
173  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
174    Consumers[i]->HandleInterestingDecl(D);
175}
176
177void MultiplexConsumer::HandleTranslationUnit(ASTContext &Ctx) {
178  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
179    Consumers[i]->HandleTranslationUnit(Ctx);
180}
181
182void MultiplexConsumer::HandleTagDeclDefinition(TagDecl *D) {
183  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
184    Consumers[i]->HandleTagDeclDefinition(D);
185}
186
187void MultiplexConsumer::CompleteTentativeDefinition(VarDecl *D) {
188  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
189    Consumers[i]->CompleteTentativeDefinition(D);
190}
191
192void 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
198ASTMutationListener *MultiplexConsumer::GetASTMutationListener() {
199  return MutationListener.get();
200}
201
202ASTDeserializationListener *MultiplexConsumer::GetASTDeserializationListener() {
203  return DeserializationListener.get();
204}
205
206void MultiplexConsumer::PrintStats() {
207  for (size_t i = 0, e = Consumers.size(); i != e; ++i)
208    Consumers[i]->PrintStats();
209}
210
211void 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
217void 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}
222