From 110eaaceddcec790f7e6a5e3bf1261c9aa1e73ab Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Mon, 2 May 2011 19:39:53 +0000
Subject: Vendor import of clang trunk r130700:
http://llvm.org/svn/llvm-project/cfe/trunk@130700
---
lib/Serialization/ChainedIncludesSource.cpp | 235 ++++++++++++++++++++++++++++
1 file changed, 235 insertions(+)
create mode 100644 lib/Serialization/ChainedIncludesSource.cpp
(limited to 'lib/Serialization/ChainedIncludesSource.cpp')
diff --git a/lib/Serialization/ChainedIncludesSource.cpp b/lib/Serialization/ChainedIncludesSource.cpp
new file mode 100644
index 0000000..da5be95
--- /dev/null
+++ b/lib/Serialization/ChainedIncludesSource.cpp
@@ -0,0 +1,235 @@
+//===- 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);
+}
+bool 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);
+}
+
--
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