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 MultiplexExternalSemaSource::MultiplexExternalSemaSource(ExternalSemaSource &s1,
23                                                         ExternalSemaSource &s2){
24   Sources.push_back(&s1);
25   Sources.push_back(&s2);
26 }
27 
28 // pin the vtable here.
29 MultiplexExternalSemaSource::~MultiplexExternalSemaSource() {}
30 
31 ///\brief Appends new source to the source list.
32 ///
33 ///\param[in] source - An ExternalSemaSource.
34 ///
35 void MultiplexExternalSemaSource::addSource(ExternalSemaSource &source) {
36   Sources.push_back(&source);
37 }
38 
39 //===----------------------------------------------------------------------===//
40 // ExternalASTSource.
41 //===----------------------------------------------------------------------===//
42 
43 Decl *MultiplexExternalSemaSource::GetExternalDecl(uint32_t ID) {
44   for(size_t i = 0; i < Sources.size(); ++i)
45     if (Decl *Result = Sources[i]->GetExternalDecl(ID))
46       return Result;
47   return nullptr;
48 }
49 
50 void MultiplexExternalSemaSource::CompleteRedeclChain(const Decl *D) {
51   for (size_t i = 0; i < Sources.size(); ++i)
52     Sources[i]->CompleteRedeclChain(D);
53 }
54 
55 Selector MultiplexExternalSemaSource::GetExternalSelector(uint32_t ID) {
56   Selector Sel;
57   for(size_t i = 0; i < Sources.size(); ++i) {
58     Sel = Sources[i]->GetExternalSelector(ID);
59     if (!Sel.isNull())
60       return Sel;
61   }
62   return Sel;
63 }
64 
65 uint32_t MultiplexExternalSemaSource::GetNumExternalSelectors() {
66   uint32_t total = 0;
67   for(size_t i = 0; i < Sources.size(); ++i)
68     total += Sources[i]->GetNumExternalSelectors();
69   return total;
70 }
71 
72 Stmt *MultiplexExternalSemaSource::GetExternalDeclStmt(uint64_t Offset) {
73   for(size_t i = 0; i < Sources.size(); ++i)
74     if (Stmt *Result = Sources[i]->GetExternalDeclStmt(Offset))
75       return Result;
76   return nullptr;
77 }
78 
79 CXXBaseSpecifier *MultiplexExternalSemaSource::GetExternalCXXBaseSpecifiers(
80                                                                uint64_t Offset){
81   for(size_t i = 0; i < Sources.size(); ++i)
82     if (CXXBaseSpecifier *R = Sources[i]->GetExternalCXXBaseSpecifiers(Offset))
83       return R;
84   return nullptr;
85 }
86 
87 CXXCtorInitializer **
88 MultiplexExternalSemaSource::GetExternalCXXCtorInitializers(uint64_t Offset) {
89   for (auto *S : Sources)
90     if (auto *R = S->GetExternalCXXCtorInitializers(Offset))
91       return R;
92   return nullptr;
93 }
94 
95 ExternalASTSource::ExtKind
96 MultiplexExternalSemaSource::hasExternalDefinitions(const Decl *D) {
97   for (const auto &S : Sources)
98     if (auto EK = S->hasExternalDefinitions(D))
99       if (EK != EK_ReplyHazy)
100         return EK;
101   return EK_ReplyHazy;
102 }
103 
104 bool MultiplexExternalSemaSource::
105 FindExternalVisibleDeclsByName(const DeclContext *DC, DeclarationName Name) {
106   bool AnyDeclsFound = false;
107   for (size_t i = 0; i < Sources.size(); ++i)
108     AnyDeclsFound |= Sources[i]->FindExternalVisibleDeclsByName(DC, Name);
109   return AnyDeclsFound;
110 }
111 
112 void MultiplexExternalSemaSource::completeVisibleDeclsMap(const DeclContext *DC){
113   for(size_t i = 0; i < Sources.size(); ++i)
114     Sources[i]->completeVisibleDeclsMap(DC);
115 }
116 
117 void MultiplexExternalSemaSource::FindExternalLexicalDecls(
118     const DeclContext *DC, llvm::function_ref<bool(Decl::Kind)> IsKindWeWant,
119     SmallVectorImpl<Decl *> &Result) {
120   for(size_t i = 0; i < Sources.size(); ++i)
121     Sources[i]->FindExternalLexicalDecls(DC, IsKindWeWant, Result);
122 }
123 
124 void MultiplexExternalSemaSource::FindFileRegionDecls(FileID File,
125                                                       unsigned Offset,
126                                                       unsigned Length,
127                                                 SmallVectorImpl<Decl *> &Decls){
128   for(size_t i = 0; i < Sources.size(); ++i)
129     Sources[i]->FindFileRegionDecls(File, Offset, Length, Decls);
130 }
131 
132 void MultiplexExternalSemaSource::CompleteType(TagDecl *Tag) {
133   for(size_t i = 0; i < Sources.size(); ++i)
134     Sources[i]->CompleteType(Tag);
135 }
136 
137 void MultiplexExternalSemaSource::CompleteType(ObjCInterfaceDecl *Class) {
138   for(size_t i = 0; i < Sources.size(); ++i)
139     Sources[i]->CompleteType(Class);
140 }
141 
142 void MultiplexExternalSemaSource::ReadComments() {
143   for(size_t i = 0; i < Sources.size(); ++i)
144     Sources[i]->ReadComments();
145 }
146 
147 void MultiplexExternalSemaSource::StartedDeserializing() {
148   for(size_t i = 0; i < Sources.size(); ++i)
149     Sources[i]->StartedDeserializing();
150 }
151 
152 void MultiplexExternalSemaSource::FinishedDeserializing() {
153   for(size_t i = 0; i < Sources.size(); ++i)
154     Sources[i]->FinishedDeserializing();
155 }
156 
157 void MultiplexExternalSemaSource::StartTranslationUnit(ASTConsumer *Consumer) {
158   for(size_t i = 0; i < Sources.size(); ++i)
159     Sources[i]->StartTranslationUnit(Consumer);
160 }
161 
162 void MultiplexExternalSemaSource::PrintStats() {
163   for(size_t i = 0; i < Sources.size(); ++i)
164     Sources[i]->PrintStats();
165 }
166 
167 bool MultiplexExternalSemaSource::layoutRecordType(const RecordDecl *Record,
168                                                    uint64_t &Size,
169                                                    uint64_t &Alignment,
170                       llvm::DenseMap<const FieldDecl *, uint64_t> &FieldOffsets,
171                   llvm::DenseMap<const CXXRecordDecl *, CharUnits> &BaseOffsets,
172           llvm::DenseMap<const CXXRecordDecl *, CharUnits> &VirtualBaseOffsets){
173   for(size_t i = 0; i < Sources.size(); ++i)
174     if (Sources[i]->layoutRecordType(Record, Size, Alignment, FieldOffsets,
175                                      BaseOffsets, VirtualBaseOffsets))
176       return true;
177   return false;
178 }
179 
180 void MultiplexExternalSemaSource::
181 getMemoryBufferSizes(MemoryBufferSizes &sizes) const {
182   for(size_t i = 0; i < Sources.size(); ++i)
183     Sources[i]->getMemoryBufferSizes(sizes);
184 
185 }
186 
187 //===----------------------------------------------------------------------===//
188 // ExternalSemaSource.
189 //===----------------------------------------------------------------------===//
190 
191 
192 void MultiplexExternalSemaSource::InitializeSema(Sema &S) {
193   for(size_t i = 0; i < Sources.size(); ++i)
194     Sources[i]->InitializeSema(S);
195 }
196 
197 void MultiplexExternalSemaSource::ForgetSema() {
198   for(size_t i = 0; i < Sources.size(); ++i)
199     Sources[i]->ForgetSema();
200 }
201 
202 void MultiplexExternalSemaSource::ReadMethodPool(Selector Sel) {
203   for(size_t i = 0; i < Sources.size(); ++i)
204     Sources[i]->ReadMethodPool(Sel);
205 }
206 
207 void MultiplexExternalSemaSource::updateOutOfDateSelector(Selector Sel) {
208   for(size_t i = 0; i < Sources.size(); ++i)
209     Sources[i]->updateOutOfDateSelector(Sel);
210 }
211 
212 void MultiplexExternalSemaSource::ReadKnownNamespaces(
213                                    SmallVectorImpl<NamespaceDecl*> &Namespaces){
214   for(size_t i = 0; i < Sources.size(); ++i)
215     Sources[i]->ReadKnownNamespaces(Namespaces);
216 }
217 
218 void MultiplexExternalSemaSource::ReadUndefinedButUsed(
219     llvm::MapVector<NamedDecl *, SourceLocation> &Undefined) {
220   for(size_t i = 0; i < Sources.size(); ++i)
221     Sources[i]->ReadUndefinedButUsed(Undefined);
222 }
223 
224 void MultiplexExternalSemaSource::ReadMismatchingDeleteExpressions(
225     llvm::MapVector<FieldDecl *,
226                     llvm::SmallVector<std::pair<SourceLocation, bool>, 4>> &
227         Exprs) {
228   for (auto &Source : Sources)
229     Source->ReadMismatchingDeleteExpressions(Exprs);
230 }
231 
232 bool MultiplexExternalSemaSource::LookupUnqualified(LookupResult &R, Scope *S){
233   for(size_t i = 0; i < Sources.size(); ++i)
234     Sources[i]->LookupUnqualified(R, S);
235 
236   return !R.empty();
237 }
238 
239 void MultiplexExternalSemaSource::ReadTentativeDefinitions(
240                                      SmallVectorImpl<VarDecl*> &TentativeDefs) {
241   for(size_t i = 0; i < Sources.size(); ++i)
242     Sources[i]->ReadTentativeDefinitions(TentativeDefs);
243 }
244 
245 void MultiplexExternalSemaSource::ReadUnusedFileScopedDecls(
246                                 SmallVectorImpl<const DeclaratorDecl*> &Decls) {
247   for(size_t i = 0; i < Sources.size(); ++i)
248     Sources[i]->ReadUnusedFileScopedDecls(Decls);
249 }
250 
251 void MultiplexExternalSemaSource::ReadDelegatingConstructors(
252                                   SmallVectorImpl<CXXConstructorDecl*> &Decls) {
253   for(size_t i = 0; i < Sources.size(); ++i)
254     Sources[i]->ReadDelegatingConstructors(Decls);
255 }
256 
257 void MultiplexExternalSemaSource::ReadExtVectorDecls(
258                                      SmallVectorImpl<TypedefNameDecl*> &Decls) {
259   for(size_t i = 0; i < Sources.size(); ++i)
260     Sources[i]->ReadExtVectorDecls(Decls);
261 }
262 
263 void MultiplexExternalSemaSource::ReadUnusedLocalTypedefNameCandidates(
264     llvm::SmallSetVector<const TypedefNameDecl *, 4> &Decls) {
265   for(size_t i = 0; i < Sources.size(); ++i)
266     Sources[i]->ReadUnusedLocalTypedefNameCandidates(Decls);
267 }
268 
269 void MultiplexExternalSemaSource::ReadReferencedSelectors(
270                   SmallVectorImpl<std::pair<Selector, SourceLocation> > &Sels) {
271   for(size_t i = 0; i < Sources.size(); ++i)
272     Sources[i]->ReadReferencedSelectors(Sels);
273 }
274 
275 void MultiplexExternalSemaSource::ReadWeakUndeclaredIdentifiers(
276                    SmallVectorImpl<std::pair<IdentifierInfo*, WeakInfo> > &WI) {
277   for(size_t i = 0; i < Sources.size(); ++i)
278     Sources[i]->ReadWeakUndeclaredIdentifiers(WI);
279 }
280 
281 void MultiplexExternalSemaSource::ReadUsedVTables(
282                                   SmallVectorImpl<ExternalVTableUse> &VTables) {
283   for(size_t i = 0; i < Sources.size(); ++i)
284     Sources[i]->ReadUsedVTables(VTables);
285 }
286 
287 void MultiplexExternalSemaSource::ReadPendingInstantiations(
288                                            SmallVectorImpl<std::pair<ValueDecl*,
289                                                    SourceLocation> > &Pending) {
290   for(size_t i = 0; i < Sources.size(); ++i)
291     Sources[i]->ReadPendingInstantiations(Pending);
292 }
293 
294 void MultiplexExternalSemaSource::ReadLateParsedTemplates(
295     llvm::MapVector<const FunctionDecl *, std::unique_ptr<LateParsedTemplate>>
296         &LPTMap) {
297   for (size_t i = 0; i < Sources.size(); ++i)
298     Sources[i]->ReadLateParsedTemplates(LPTMap);
299 }
300 
301 TypoCorrection MultiplexExternalSemaSource::CorrectTypo(
302                                      const DeclarationNameInfo &Typo,
303                                      int LookupKind, Scope *S, CXXScopeSpec *SS,
304                                      CorrectionCandidateCallback &CCC,
305                                      DeclContext *MemberContext,
306                                      bool EnteringContext,
307                                      const ObjCObjectPointerType *OPT) {
308   for (size_t I = 0, E = Sources.size(); I < E; ++I) {
309     if (TypoCorrection C = Sources[I]->CorrectTypo(Typo, LookupKind, S, SS, CCC,
310                                                    MemberContext,
311                                                    EnteringContext, OPT))
312       return C;
313   }
314   return TypoCorrection();
315 }
316 
317 bool MultiplexExternalSemaSource::MaybeDiagnoseMissingCompleteType(
318     SourceLocation Loc, QualType T) {
319   for (size_t I = 0, E = Sources.size(); I < E; ++I) {
320     if (Sources[I]->MaybeDiagnoseMissingCompleteType(Loc, T))
321       return true;
322   }
323   return false;
324 }
325