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Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +00001//===- ChainedIncludesSource.cpp - Chained PCHs in Memory -------*- 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 ChainedIncludesSource class, which converts headers
11// to chained PCHs in memory, mainly used for testing.
12//
13//===----------------------------------------------------------------------===//
14
Chandler Carruth71088d12011-12-09 01:55:54 +000015#include "clang/Frontend/ChainedIncludesSource.h"
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000016#include "clang/Frontend/TextDiagnosticPrinter.h"
17#include "clang/Frontend/CompilerInstance.h"
18#include "clang/Frontend/ASTUnit.h"
Chandler Carruth71088d12011-12-09 01:55:54 +000019#include "clang/Serialization/ASTReader.h"
20#include "clang/Serialization/ASTWriter.h"
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000021#include "clang/Parse/ParseAST.h"
22#include "clang/Lex/Preprocessor.h"
23#include "clang/Basic/TargetInfo.h"
24#include "llvm/Support/MemoryBuffer.h"
25
26using namespace clang;
27
28static ASTReader *createASTReader(CompilerInstance &CI,
Jonathan D. Turnerc24a1ee2011-08-02 17:40:32 +000029 StringRef pchFile,
30 SmallVector<llvm::MemoryBuffer *, 4> &memBufs,
31 SmallVector<std::string, 4> &bufNames,
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000032 ASTDeserializationListener *deserialListener = 0) {
33 Preprocessor &PP = CI.getPreprocessor();
Dylan Noblesmith6f42b622012-02-05 02:12:40 +000034 OwningPtr<ASTReader> Reader;
Douglas Gregorf8a1e512011-09-02 00:26:20 +000035 Reader.reset(new ASTReader(PP, CI.getASTContext(), /*isysroot=*/"",
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000036 /*DisableValidation=*/true));
Jonathan D. Turnerc24a1ee2011-08-02 17:40:32 +000037 for (unsigned ti = 0; ti < bufNames.size(); ++ti) {
38 StringRef sr(bufNames[ti]);
39 Reader->addInMemoryBuffer(sr, memBufs[ti]);
40 }
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000041 Reader->setDeserializationListener(deserialListener);
Douglas Gregor38295be2012-10-22 23:51:00 +000042 switch (Reader->ReadAST(pchFile, serialization::MK_PCH,
43 ASTReader::ARR_None)) {
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000044 case ASTReader::Success:
45 // Set the predefines buffer as suggested by the PCH reader.
46 PP.setPredefines(Reader->getSuggestedPredefines());
47 return Reader.take();
48
49 case ASTReader::Failure:
Douglas Gregor4825fd72012-10-22 22:50:17 +000050 case ASTReader::OutOfDate:
51 case ASTReader::VersionMismatch:
52 case ASTReader::ConfigurationMismatch:
53 case ASTReader::HadErrors:
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000054 break;
55 }
56 return 0;
57}
58
59ChainedIncludesSource::~ChainedIncludesSource() {
60 for (unsigned i = 0, e = CIs.size(); i != e; ++i)
61 delete CIs[i];
62}
63
64ChainedIncludesSource *ChainedIncludesSource::create(CompilerInstance &CI) {
65
66 std::vector<std::string> &includes = CI.getPreprocessorOpts().ChainedIncludes;
67 assert(!includes.empty() && "No '-chain-include' in options!");
68
Dylan Noblesmith6f42b622012-02-05 02:12:40 +000069 OwningPtr<ChainedIncludesSource> source(new ChainedIncludesSource());
Douglas Gregor1f6b2b52012-01-20 16:28:04 +000070 InputKind IK = CI.getFrontendOpts().Inputs[0].Kind;
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000071
Chris Lattner5f9e2722011-07-23 10:55:15 +000072 SmallVector<llvm::MemoryBuffer *, 4> serialBufs;
Jonathan D. Turnerc24a1ee2011-08-02 17:40:32 +000073 SmallVector<std::string, 4> serialBufNames;
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000074
75 for (unsigned i = 0, e = includes.size(); i != e; ++i) {
76 bool firstInclude = (i == 0);
Dylan Noblesmith6f42b622012-02-05 02:12:40 +000077 OwningPtr<CompilerInvocation> CInvok;
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000078 CInvok.reset(new CompilerInvocation(CI.getInvocation()));
79
80 CInvok->getPreprocessorOpts().ChainedIncludes.clear();
81 CInvok->getPreprocessorOpts().ImplicitPCHInclude.clear();
82 CInvok->getPreprocessorOpts().ImplicitPTHInclude.clear();
83 CInvok->getPreprocessorOpts().DisablePCHValidation = true;
84 CInvok->getPreprocessorOpts().Includes.clear();
85 CInvok->getPreprocessorOpts().MacroIncludes.clear();
86 CInvok->getPreprocessorOpts().Macros.clear();
87
88 CInvok->getFrontendOpts().Inputs.clear();
Douglas Gregor1f6b2b52012-01-20 16:28:04 +000089 CInvok->getFrontendOpts().Inputs.push_back(FrontendInputFile(includes[i],
90 IK));
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000091
92 TextDiagnosticPrinter *DiagClient =
93 new TextDiagnosticPrinter(llvm::errs(), DiagnosticOptions());
Dylan Noblesmithc93dc782012-02-20 14:00:23 +000094 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
95 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
David Blaikied6471f72011-09-25 23:23:43 +000096 new DiagnosticsEngine(DiagID, DiagClient));
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000097
Dylan Noblesmith6f42b622012-02-05 02:12:40 +000098 OwningPtr<CompilerInstance> Clang(new CompilerInstance());
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000099 Clang->setInvocation(CInvok.take());
100 Clang->setDiagnostics(Diags.getPtr());
101 Clang->setTarget(TargetInfo::CreateTargetInfo(Clang->getDiagnostics(),
102 Clang->getTargetOpts()));
103 Clang->createFileManager();
104 Clang->createSourceManager(Clang->getFileManager());
105 Clang->createPreprocessor();
Sebastian Redl0ab547c2011-03-31 19:29:18 +0000106 Clang->getDiagnosticClient().BeginSourceFile(Clang->getLangOpts(),
107 &Clang->getPreprocessor());
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000108 Clang->createASTContext();
109
Chris Lattner5f9e2722011-07-23 10:55:15 +0000110 SmallVector<char, 256> serialAST;
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000111 llvm::raw_svector_ostream OS(serialAST);
Dylan Noblesmith6f42b622012-02-05 02:12:40 +0000112 OwningPtr<ASTConsumer> consumer;
Douglas Gregora8cc6ce2011-11-30 04:39:39 +0000113 consumer.reset(new PCHGenerator(Clang->getPreprocessor(), "-", 0,
114 /*isysroot=*/"", &OS));
Douglas Gregora8235d62012-10-09 23:05:51 +0000115 Clang->getPreprocessor().setPPMutationListener(
116 consumer->GetPPMutationListener());
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000117 Clang->getASTContext().setASTMutationListener(
118 consumer->GetASTMutationListener());
119 Clang->setASTConsumer(consumer.take());
Douglas Gregor467dc882011-08-25 22:30:56 +0000120 Clang->createSema(TU_Prefix, 0);
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000121
122 if (firstInclude) {
123 Preprocessor &PP = Clang->getPreprocessor();
124 PP.getBuiltinInfo().InitializeBuiltins(PP.getIdentifierTable(),
David Blaikie4e4d0842012-03-11 07:00:24 +0000125 PP.getLangOpts());
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000126 } else {
127 assert(!serialBufs.empty());
Chris Lattner5f9e2722011-07-23 10:55:15 +0000128 SmallVector<llvm::MemoryBuffer *, 4> bufs;
Argyrios Kyrtzidis910ee572011-03-09 23:15:22 +0000129 for (unsigned si = 0, se = serialBufs.size(); si != se; ++si) {
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000130 bufs.push_back(llvm::MemoryBuffer::getMemBufferCopy(
Chris Lattner5f9e2722011-07-23 10:55:15 +0000131 StringRef(serialBufs[si]->getBufferStart(),
Argyrios Kyrtzidis910ee572011-03-09 23:15:22 +0000132 serialBufs[si]->getBufferSize())));
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000133 }
134 std::string pchName = includes[i-1];
135 llvm::raw_string_ostream os(pchName);
136 os << ".pch" << i-1;
137 os.flush();
Jonathan D. Turnerc24a1ee2011-08-02 17:40:32 +0000138
139 serialBufNames.push_back(pchName);
140
Dylan Noblesmith6f42b622012-02-05 02:12:40 +0000141 OwningPtr<ExternalASTSource> Reader;
Jonathan D. Turnerc24a1ee2011-08-02 17:40:32 +0000142
143 Reader.reset(createASTReader(*Clang, pchName, bufs, serialBufNames,
144 Clang->getASTConsumer().GetASTDeserializationListener()));
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000145 if (!Reader)
146 return 0;
147 Clang->getASTContext().setExternalSource(Reader);
148 }
149
150 if (!Clang->InitializeSourceManager(includes[i]))
151 return 0;
152
153 ParseAST(Clang->getSema());
154 OS.flush();
Sebastian Redl0ab547c2011-03-31 19:29:18 +0000155 Clang->getDiagnosticClient().EndSourceFile();
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000156 serialBufs.push_back(
Chris Lattner5f9e2722011-07-23 10:55:15 +0000157 llvm::MemoryBuffer::getMemBufferCopy(StringRef(serialAST.data(),
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000158 serialAST.size())));
159 source->CIs.push_back(Clang.take());
160 }
161
162 assert(!serialBufs.empty());
163 std::string pchName = includes.back() + ".pch-final";
Jonathan D. Turnerc24a1ee2011-08-02 17:40:32 +0000164 serialBufNames.push_back(pchName);
Dylan Noblesmith6f42b622012-02-05 02:12:40 +0000165 OwningPtr<ASTReader> Reader;
Jonathan D. Turnerc24a1ee2011-08-02 17:40:32 +0000166 Reader.reset(createASTReader(CI, pchName, serialBufs, serialBufNames));
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000167 if (!Reader)
168 return 0;
169
170 source->FinalReader.reset(Reader.take());
171 return source.take();
172}
173
174//===----------------------------------------------------------------------===//
175// ExternalASTSource interface.
176//===----------------------------------------------------------------------===//
177
178Decl *ChainedIncludesSource::GetExternalDecl(uint32_t ID) {
179 return getFinalReader().GetExternalDecl(ID);
180}
181Selector ChainedIncludesSource::GetExternalSelector(uint32_t ID) {
182 return getFinalReader().GetExternalSelector(ID);
183}
184uint32_t ChainedIncludesSource::GetNumExternalSelectors() {
185 return getFinalReader().GetNumExternalSelectors();
186}
187Stmt *ChainedIncludesSource::GetExternalDeclStmt(uint64_t Offset) {
188 return getFinalReader().GetExternalDeclStmt(Offset);
189}
190CXXBaseSpecifier *
191ChainedIncludesSource::GetExternalCXXBaseSpecifiers(uint64_t Offset) {
192 return getFinalReader().GetExternalCXXBaseSpecifiers(Offset);
193}
194DeclContextLookupResult
195ChainedIncludesSource::FindExternalVisibleDeclsByName(const DeclContext *DC,
196 DeclarationName Name) {
197 return getFinalReader().FindExternalVisibleDeclsByName(DC, Name);
198}
Douglas Gregorba6ffaf2011-07-15 21:46:17 +0000199ExternalLoadResult
200ChainedIncludesSource::FindExternalLexicalDecls(const DeclContext *DC,
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000201 bool (*isKindWeWant)(Decl::Kind),
Chris Lattner5f9e2722011-07-23 10:55:15 +0000202 SmallVectorImpl<Decl*> &Result) {
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000203 return getFinalReader().FindExternalLexicalDecls(DC, isKindWeWant, Result);
204}
205void ChainedIncludesSource::CompleteType(TagDecl *Tag) {
206 return getFinalReader().CompleteType(Tag);
207}
208void ChainedIncludesSource::CompleteType(ObjCInterfaceDecl *Class) {
209 return getFinalReader().CompleteType(Class);
210}
211void ChainedIncludesSource::StartedDeserializing() {
212 return getFinalReader().StartedDeserializing();
213}
214void ChainedIncludesSource::FinishedDeserializing() {
215 return getFinalReader().FinishedDeserializing();
216}
217void ChainedIncludesSource::StartTranslationUnit(ASTConsumer *Consumer) {
218 return getFinalReader().StartTranslationUnit(Consumer);
219}
220void ChainedIncludesSource::PrintStats() {
221 return getFinalReader().PrintStats();
222}
Ted Kremeneke9b5f3d2011-04-28 23:46:20 +0000223void ChainedIncludesSource::getMemoryBufferSizes(MemoryBufferSizes &sizes)const{
224 for (unsigned i = 0, e = CIs.size(); i != e; ++i) {
225 if (const ExternalASTSource *eSrc =
226 CIs[i]->getASTContext().getExternalSource()) {
227 eSrc->getMemoryBufferSizes(sizes);
228 }
229 }
230
231 getFinalReader().getMemoryBufferSizes(sizes);
232}
Sebastian Redlce0682f2011-03-31 19:29:24 +0000233
234void ChainedIncludesSource::InitializeSema(Sema &S) {
235 return getFinalReader().InitializeSema(S);
236}
237void ChainedIncludesSource::ForgetSema() {
238 return getFinalReader().ForgetSema();
239}
Douglas Gregor5ac4b692012-01-25 00:49:42 +0000240void ChainedIncludesSource::ReadMethodPool(Selector Sel) {
241 getFinalReader().ReadMethodPool(Sel);
Sebastian Redlce0682f2011-03-31 19:29:24 +0000242}
243bool ChainedIncludesSource::LookupUnqualified(LookupResult &R, Scope *S) {
244 return getFinalReader().LookupUnqualified(R, S);
245}
246