1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
//===- ChainedIncludesSource.cpp - Chained PCHs in Memory -------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the ChainedIncludesSource class, which converts headers
// to chained PCHs in memory, mainly used for testing.
//
//===----------------------------------------------------------------------===//
#include "clang/Serialization/ChainedIncludesSource.h"
#include "clang/Serialization/ASTReader.h"
#include "clang/Serialization/ASTWriter.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/ASTUnit.h"
#include "clang/Parse/ParseAST.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/Support/MemoryBuffer.h"
using namespace clang;
static ASTReader *createASTReader(CompilerInstance &CI,
llvm::StringRef pchFile,
llvm::MemoryBuffer **memBufs,
unsigned numBufs,
ASTDeserializationListener *deserialListener = 0) {
Preprocessor &PP = CI.getPreprocessor();
llvm::OwningPtr<ASTReader> Reader;
Reader.reset(new ASTReader(PP, &CI.getASTContext(), /*isysroot=*/0,
/*DisableValidation=*/true));
Reader->setASTMemoryBuffers(memBufs, numBufs);
Reader->setDeserializationListener(deserialListener);
switch (Reader->ReadAST(pchFile, ASTReader::PCH)) {
case ASTReader::Success:
// Set the predefines buffer as suggested by the PCH reader.
PP.setPredefines(Reader->getSuggestedPredefines());
return Reader.take();
case ASTReader::Failure:
case ASTReader::IgnorePCH:
break;
}
return 0;
}
ChainedIncludesSource::~ChainedIncludesSource() {
for (unsigned i = 0, e = CIs.size(); i != e; ++i)
delete CIs[i];
}
ChainedIncludesSource *ChainedIncludesSource::create(CompilerInstance &CI) {
std::vector<std::string> &includes = CI.getPreprocessorOpts().ChainedIncludes;
assert(!includes.empty() && "No '-chain-include' in options!");
llvm::OwningPtr<ChainedIncludesSource> source(new ChainedIncludesSource());
InputKind IK = CI.getFrontendOpts().Inputs[0].first;
llvm::SmallVector<llvm::MemoryBuffer *, 4> serialBufs;
for (unsigned i = 0, e = includes.size(); i != e; ++i) {
bool firstInclude = (i == 0);
llvm::OwningPtr<CompilerInvocation> CInvok;
CInvok.reset(new CompilerInvocation(CI.getInvocation()));
CInvok->getPreprocessorOpts().ChainedIncludes.clear();
CInvok->getPreprocessorOpts().ImplicitPCHInclude.clear();
CInvok->getPreprocessorOpts().ImplicitPTHInclude.clear();
CInvok->getPreprocessorOpts().DisablePCHValidation = true;
CInvok->getPreprocessorOpts().Includes.clear();
CInvok->getPreprocessorOpts().MacroIncludes.clear();
CInvok->getPreprocessorOpts().Macros.clear();
CInvok->getFrontendOpts().Inputs.clear();
CInvok->getFrontendOpts().Inputs.push_back(std::make_pair(IK, includes[i]));
TextDiagnosticPrinter *DiagClient =
new TextDiagnosticPrinter(llvm::errs(), DiagnosticOptions());
llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
llvm::IntrusiveRefCntPtr<Diagnostic> Diags(new Diagnostic(DiagID,
DiagClient));
llvm::OwningPtr<CompilerInstance> Clang(new CompilerInstance());
Clang->setInvocation(CInvok.take());
Clang->setDiagnostics(Diags.getPtr());
Clang->setTarget(TargetInfo::CreateTargetInfo(Clang->getDiagnostics(),
Clang->getTargetOpts()));
Clang->createFileManager();
Clang->createSourceManager(Clang->getFileManager());
Clang->createPreprocessor();
Clang->getDiagnosticClient().BeginSourceFile(Clang->getLangOpts(),
&Clang->getPreprocessor());
Clang->createASTContext();
llvm::SmallVector<char, 256> serialAST;
llvm::raw_svector_ostream OS(serialAST);
llvm::OwningPtr<ASTConsumer> consumer;
consumer.reset(new PCHGenerator(Clang->getPreprocessor(), "-",
/*Chaining=*/!firstInclude,
/*isysroot=*/0, &OS));
Clang->getASTContext().setASTMutationListener(
consumer->GetASTMutationListener());
Clang->setASTConsumer(consumer.take());
Clang->createSema(/*CompleteTranslationUnit=*/false, 0);
if (firstInclude) {
Preprocessor &PP = Clang->getPreprocessor();
PP.getBuiltinInfo().InitializeBuiltins(PP.getIdentifierTable(),
PP.getLangOptions());
} else {
assert(!serialBufs.empty());
llvm::SmallVector<llvm::MemoryBuffer *, 4> bufs;
for (unsigned si = 0, se = serialBufs.size(); si != se; ++si) {
bufs.push_back(llvm::MemoryBuffer::getMemBufferCopy(
llvm::StringRef(serialBufs[si]->getBufferStart(),
serialBufs[si]->getBufferSize())));
}
std::string pchName = includes[i-1];
llvm::raw_string_ostream os(pchName);
os << ".pch" << i-1;
os.flush();
llvm::OwningPtr<ExternalASTSource> Reader;
Reader.reset(createASTReader(*Clang, pchName, bufs.data(), bufs.size(),
Clang->getASTConsumer().GetASTDeserializationListener()));
if (!Reader)
return 0;
Clang->getASTContext().setExternalSource(Reader);
}
if (!Clang->InitializeSourceManager(includes[i]))
return 0;
ParseAST(Clang->getSema());
OS.flush();
Clang->getDiagnosticClient().EndSourceFile();
serialBufs.push_back(
llvm::MemoryBuffer::getMemBufferCopy(llvm::StringRef(serialAST.data(),
serialAST.size())));
source->CIs.push_back(Clang.take());
}
assert(!serialBufs.empty());
std::string pchName = includes.back() + ".pch-final";
llvm::OwningPtr<ASTReader> Reader;
Reader.reset(createASTReader(CI, pchName,
serialBufs.data(), serialBufs.size()));
if (!Reader)
return 0;
source->FinalReader.reset(Reader.take());
return source.take();
}
//===----------------------------------------------------------------------===//
// ExternalASTSource interface.
//===----------------------------------------------------------------------===//
Decl *ChainedIncludesSource::GetExternalDecl(uint32_t ID) {
return getFinalReader().GetExternalDecl(ID);
}
Selector ChainedIncludesSource::GetExternalSelector(uint32_t ID) {
return getFinalReader().GetExternalSelector(ID);
}
uint32_t ChainedIncludesSource::GetNumExternalSelectors() {
return getFinalReader().GetNumExternalSelectors();
}
Stmt *ChainedIncludesSource::GetExternalDeclStmt(uint64_t Offset) {
return getFinalReader().GetExternalDeclStmt(Offset);
}
CXXBaseSpecifier *
ChainedIncludesSource::GetExternalCXXBaseSpecifiers(uint64_t Offset) {
return getFinalReader().GetExternalCXXBaseSpecifiers(Offset);
}
DeclContextLookupResult
ChainedIncludesSource::FindExternalVisibleDeclsByName(const DeclContext *DC,
DeclarationName Name) {
return getFinalReader().FindExternalVisibleDeclsByName(DC, Name);
}
void ChainedIncludesSource::MaterializeVisibleDecls(const DeclContext *DC) {
return getFinalReader().MaterializeVisibleDecls(DC);
}
ExternalLoadResult
ChainedIncludesSource::FindExternalLexicalDecls(const DeclContext *DC,
bool (*isKindWeWant)(Decl::Kind),
llvm::SmallVectorImpl<Decl*> &Result) {
return getFinalReader().FindExternalLexicalDecls(DC, isKindWeWant, Result);
}
void ChainedIncludesSource::CompleteType(TagDecl *Tag) {
return getFinalReader().CompleteType(Tag);
}
void ChainedIncludesSource::CompleteType(ObjCInterfaceDecl *Class) {
return getFinalReader().CompleteType(Class);
}
void ChainedIncludesSource::StartedDeserializing() {
return getFinalReader().StartedDeserializing();
}
void ChainedIncludesSource::FinishedDeserializing() {
return getFinalReader().FinishedDeserializing();
}
void ChainedIncludesSource::StartTranslationUnit(ASTConsumer *Consumer) {
return getFinalReader().StartTranslationUnit(Consumer);
}
void ChainedIncludesSource::PrintStats() {
return getFinalReader().PrintStats();
}
void ChainedIncludesSource::getMemoryBufferSizes(MemoryBufferSizes &sizes)const{
for (unsigned i = 0, e = CIs.size(); i != e; ++i) {
if (const ExternalASTSource *eSrc =
CIs[i]->getASTContext().getExternalSource()) {
eSrc->getMemoryBufferSizes(sizes);
}
}
getFinalReader().getMemoryBufferSizes(sizes);
}
void ChainedIncludesSource::InitializeSema(Sema &S) {
return getFinalReader().InitializeSema(S);
}
void ChainedIncludesSource::ForgetSema() {
return getFinalReader().ForgetSema();
}
std::pair<ObjCMethodList,ObjCMethodList>
ChainedIncludesSource::ReadMethodPool(Selector Sel) {
return getFinalReader().ReadMethodPool(Sel);
}
bool ChainedIncludesSource::LookupUnqualified(LookupResult &R, Scope *S) {
return getFinalReader().LookupUnqualified(R, S);
}
|
