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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"
Chandler Carruth55fc8732012-12-04 09:13:33 +000016#include "clang/Basic/TargetInfo.h"
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000017#include "clang/Frontend/ASTUnit.h"
Chandler Carruth55fc8732012-12-04 09:13:33 +000018#include "clang/Frontend/CompilerInstance.h"
19#include "clang/Frontend/TextDiagnosticPrinter.h"
20#include "clang/Lex/Preprocessor.h"
21#include "clang/Parse/ParseAST.h"
Chandler Carruth71088d12011-12-09 01:55:54 +000022#include "clang/Serialization/ASTReader.h"
23#include "clang/Serialization/ASTWriter.h"
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000024#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);
Argyrios Kyrtzidis958bcaf2012-11-15 18:57:22 +000042 switch (Reader->ReadAST(pchFile, serialization::MK_PCH, SourceLocation(),
Douglas Gregor38295be2012-10-22 23:51:00 +000043 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 Gregor677e15f2013-03-19 00:28:20 +000050 case ASTReader::Missing:
Douglas Gregor4825fd72012-10-22 22:50:17 +000051 case ASTReader::OutOfDate:
52 case ASTReader::VersionMismatch:
53 case ASTReader::ConfigurationMismatch:
54 case ASTReader::HadErrors:
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000055 break;
56 }
57 return 0;
58}
59
60ChainedIncludesSource::~ChainedIncludesSource() {
61 for (unsigned i = 0, e = CIs.size(); i != e; ++i)
62 delete CIs[i];
63}
64
65ChainedIncludesSource *ChainedIncludesSource::create(CompilerInstance &CI) {
66
67 std::vector<std::string> &includes = CI.getPreprocessorOpts().ChainedIncludes;
68 assert(!includes.empty() && "No '-chain-include' in options!");
69
Dylan Noblesmith6f42b622012-02-05 02:12:40 +000070 OwningPtr<ChainedIncludesSource> source(new ChainedIncludesSource());
Argyrios Kyrtzidis8616f9a2012-11-09 19:40:39 +000071 InputKind IK = CI.getFrontendOpts().Inputs[0].getKind();
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000072
Chris Lattner5f9e2722011-07-23 10:55:15 +000073 SmallVector<llvm::MemoryBuffer *, 4> serialBufs;
Jonathan D. Turnerc24a1ee2011-08-02 17:40:32 +000074 SmallVector<std::string, 4> serialBufNames;
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000075
76 for (unsigned i = 0, e = includes.size(); i != e; ++i) {
77 bool firstInclude = (i == 0);
Dylan Noblesmith6f42b622012-02-05 02:12:40 +000078 OwningPtr<CompilerInvocation> CInvok;
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000079 CInvok.reset(new CompilerInvocation(CI.getInvocation()));
80
81 CInvok->getPreprocessorOpts().ChainedIncludes.clear();
82 CInvok->getPreprocessorOpts().ImplicitPCHInclude.clear();
83 CInvok->getPreprocessorOpts().ImplicitPTHInclude.clear();
84 CInvok->getPreprocessorOpts().DisablePCHValidation = true;
85 CInvok->getPreprocessorOpts().Includes.clear();
86 CInvok->getPreprocessorOpts().MacroIncludes.clear();
87 CInvok->getPreprocessorOpts().Macros.clear();
88
89 CInvok->getFrontendOpts().Inputs.clear();
Argyrios Kyrtzidis8e1fbbc2012-11-09 19:40:33 +000090 FrontendInputFile InputFile(includes[i], IK);
91 CInvok->getFrontendOpts().Inputs.push_back(InputFile);
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000092
93 TextDiagnosticPrinter *DiagClient =
Douglas Gregor02c23eb2012-10-23 22:26:28 +000094 new TextDiagnosticPrinter(llvm::errs(), new DiagnosticOptions());
Dylan Noblesmithc93dc782012-02-20 14:00:23 +000095 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
96 IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
Douglas Gregor02c23eb2012-10-23 22:26:28 +000097 new DiagnosticsEngine(DiagID, &CI.getDiagnosticOpts(), DiagClient));
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +000098
Dylan Noblesmith6f42b622012-02-05 02:12:40 +000099 OwningPtr<CompilerInstance> Clang(new CompilerInstance());
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000100 Clang->setInvocation(CInvok.take());
101 Clang->setDiagnostics(Diags.getPtr());
102 Clang->setTarget(TargetInfo::CreateTargetInfo(Clang->getDiagnostics(),
Douglas Gregor49a87542012-11-16 04:24:59 +0000103 &Clang->getTargetOpts()));
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000104 Clang->createFileManager();
105 Clang->createSourceManager(Clang->getFileManager());
106 Clang->createPreprocessor();
Sebastian Redl0ab547c2011-03-31 19:29:18 +0000107 Clang->getDiagnosticClient().BeginSourceFile(Clang->getLangOpts(),
108 &Clang->getPreprocessor());
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000109 Clang->createASTContext();
110
Chris Lattner5f9e2722011-07-23 10:55:15 +0000111 SmallVector<char, 256> serialAST;
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000112 llvm::raw_svector_ostream OS(serialAST);
Dylan Noblesmith6f42b622012-02-05 02:12:40 +0000113 OwningPtr<ASTConsumer> consumer;
Douglas Gregora8cc6ce2011-11-30 04:39:39 +0000114 consumer.reset(new PCHGenerator(Clang->getPreprocessor(), "-", 0,
115 /*isysroot=*/"", &OS));
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000116 Clang->getASTContext().setASTMutationListener(
117 consumer->GetASTMutationListener());
118 Clang->setASTConsumer(consumer.take());
Douglas Gregor467dc882011-08-25 22:30:56 +0000119 Clang->createSema(TU_Prefix, 0);
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000120
121 if (firstInclude) {
122 Preprocessor &PP = Clang->getPreprocessor();
123 PP.getBuiltinInfo().InitializeBuiltins(PP.getIdentifierTable(),
David Blaikie4e4d0842012-03-11 07:00:24 +0000124 PP.getLangOpts());
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000125 } else {
126 assert(!serialBufs.empty());
Chris Lattner5f9e2722011-07-23 10:55:15 +0000127 SmallVector<llvm::MemoryBuffer *, 4> bufs;
Argyrios Kyrtzidis910ee572011-03-09 23:15:22 +0000128 for (unsigned si = 0, se = serialBufs.size(); si != se; ++si) {
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000129 bufs.push_back(llvm::MemoryBuffer::getMemBufferCopy(
Chris Lattner5f9e2722011-07-23 10:55:15 +0000130 StringRef(serialBufs[si]->getBufferStart(),
Argyrios Kyrtzidis910ee572011-03-09 23:15:22 +0000131 serialBufs[si]->getBufferSize())));
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000132 }
133 std::string pchName = includes[i-1];
134 llvm::raw_string_ostream os(pchName);
135 os << ".pch" << i-1;
136 os.flush();
Jonathan D. Turnerc24a1ee2011-08-02 17:40:32 +0000137
138 serialBufNames.push_back(pchName);
139
Dylan Noblesmith6f42b622012-02-05 02:12:40 +0000140 OwningPtr<ExternalASTSource> Reader;
Jonathan D. Turnerc24a1ee2011-08-02 17:40:32 +0000141
142 Reader.reset(createASTReader(*Clang, pchName, bufs, serialBufNames,
143 Clang->getASTConsumer().GetASTDeserializationListener()));
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000144 if (!Reader)
145 return 0;
146 Clang->getASTContext().setExternalSource(Reader);
147 }
148
Argyrios Kyrtzidis8e1fbbc2012-11-09 19:40:33 +0000149 if (!Clang->InitializeSourceManager(InputFile))
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000150 return 0;
151
152 ParseAST(Clang->getSema());
153 OS.flush();
Sebastian Redl0ab547c2011-03-31 19:29:18 +0000154 Clang->getDiagnosticClient().EndSourceFile();
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000155 serialBufs.push_back(
Chris Lattner5f9e2722011-07-23 10:55:15 +0000156 llvm::MemoryBuffer::getMemBufferCopy(StringRef(serialAST.data(),
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000157 serialAST.size())));
158 source->CIs.push_back(Clang.take());
159 }
160
161 assert(!serialBufs.empty());
162 std::string pchName = includes.back() + ".pch-final";
Jonathan D. Turnerc24a1ee2011-08-02 17:40:32 +0000163 serialBufNames.push_back(pchName);
Dylan Noblesmith6f42b622012-02-05 02:12:40 +0000164 OwningPtr<ASTReader> Reader;
Jonathan D. Turnerc24a1ee2011-08-02 17:40:32 +0000165 Reader.reset(createASTReader(CI, pchName, serialBufs, serialBufNames));
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000166 if (!Reader)
167 return 0;
168
169 source->FinalReader.reset(Reader.take());
170 return source.take();
171}
172
173//===----------------------------------------------------------------------===//
174// ExternalASTSource interface.
175//===----------------------------------------------------------------------===//
176
177Decl *ChainedIncludesSource::GetExternalDecl(uint32_t ID) {
178 return getFinalReader().GetExternalDecl(ID);
179}
180Selector ChainedIncludesSource::GetExternalSelector(uint32_t ID) {
181 return getFinalReader().GetExternalSelector(ID);
182}
183uint32_t ChainedIncludesSource::GetNumExternalSelectors() {
184 return getFinalReader().GetNumExternalSelectors();
185}
186Stmt *ChainedIncludesSource::GetExternalDeclStmt(uint64_t Offset) {
187 return getFinalReader().GetExternalDeclStmt(Offset);
188}
189CXXBaseSpecifier *
190ChainedIncludesSource::GetExternalCXXBaseSpecifiers(uint64_t Offset) {
191 return getFinalReader().GetExternalCXXBaseSpecifiers(Offset);
192}
Richard Smith3646c682013-02-07 03:30:24 +0000193bool
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000194ChainedIncludesSource::FindExternalVisibleDeclsByName(const DeclContext *DC,
195 DeclarationName Name) {
196 return getFinalReader().FindExternalVisibleDeclsByName(DC, Name);
197}
Douglas Gregorba6ffaf2011-07-15 21:46:17 +0000198ExternalLoadResult
199ChainedIncludesSource::FindExternalLexicalDecls(const DeclContext *DC,
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000200 bool (*isKindWeWant)(Decl::Kind),
Chris Lattner5f9e2722011-07-23 10:55:15 +0000201 SmallVectorImpl<Decl*> &Result) {
Argyrios Kyrtzidisb0f4b9a2011-03-09 17:21:42 +0000202 return getFinalReader().FindExternalLexicalDecls(DC, isKindWeWant, Result);
203}
204void ChainedIncludesSource::CompleteType(TagDecl *Tag) {
205 return getFinalReader().CompleteType(Tag);
206}
207void ChainedIncludesSource::CompleteType(ObjCInterfaceDecl *Class) {
208 return getFinalReader().CompleteType(Class);
209}
210void ChainedIncludesSource::StartedDeserializing() {
211 return getFinalReader().StartedDeserializing();
212}
213void ChainedIncludesSource::FinishedDeserializing() {
214 return getFinalReader().FinishedDeserializing();
215}
216void ChainedIncludesSource::StartTranslationUnit(ASTConsumer *Consumer) {
217 return getFinalReader().StartTranslationUnit(Consumer);
218}
219void ChainedIncludesSource::PrintStats() {
220 return getFinalReader().PrintStats();
221}
Ted Kremeneke9b5f3d2011-04-28 23:46:20 +0000222void ChainedIncludesSource::getMemoryBufferSizes(MemoryBufferSizes &sizes)const{
223 for (unsigned i = 0, e = CIs.size(); i != e; ++i) {
224 if (const ExternalASTSource *eSrc =
225 CIs[i]->getASTContext().getExternalSource()) {
226 eSrc->getMemoryBufferSizes(sizes);
227 }
228 }
229
230 getFinalReader().getMemoryBufferSizes(sizes);
231}
Sebastian Redlce0682f2011-03-31 19:29:24 +0000232
233void ChainedIncludesSource::InitializeSema(Sema &S) {
234 return getFinalReader().InitializeSema(S);
235}
236void ChainedIncludesSource::ForgetSema() {
237 return getFinalReader().ForgetSema();
238}
Douglas Gregor5ac4b692012-01-25 00:49:42 +0000239void ChainedIncludesSource::ReadMethodPool(Selector Sel) {
240 getFinalReader().ReadMethodPool(Sel);
Sebastian Redlce0682f2011-03-31 19:29:24 +0000241}
242bool ChainedIncludesSource::LookupUnqualified(LookupResult &R, Scope *S) {
243 return getFinalReader().LookupUnqualified(R, S);
244}
245