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//===--- CompilerInstance.cpp ---------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Frontend/CompilerInstance.h"
#include "clang/AST/ASTContext.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Lex/PTHManager.h"
#include "clang/Frontend/ChainedDiagnosticClient.h"
#include "clang/Frontend/TextDiagnosticBuffer.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/Frontend/Utils.h"
#include "llvm/LLVMContext.h"
#include "llvm/Support/raw_ostream.h"
using namespace clang;
CompilerInstance::CompilerInstance(llvm::LLVMContext *_LLVMContext,
bool _OwnsLLVMContext)
: LLVMContext(_LLVMContext),
OwnsLLVMContext(_OwnsLLVMContext) {
}
CompilerInstance::~CompilerInstance() {
if (OwnsLLVMContext)
delete LLVMContext;
}
// Diagnostics
static void SetUpBuildDumpLog(const DiagnosticOptions &DiagOpts,
unsigned argc, char **argv,
llvm::OwningPtr<DiagnosticClient> &DiagClient) {
std::string ErrorInfo;
llvm::raw_ostream *OS =
new llvm::raw_fd_ostream(DiagOpts.DumpBuildInformation.c_str(), ErrorInfo);
if (!ErrorInfo.empty()) {
// FIXME: Do not fail like this.
llvm::errs() << "error opening -dump-build-information file '"
<< DiagOpts.DumpBuildInformation << "', option ignored!\n";
delete OS;
return;
}
(*OS) << "clang-cc command line arguments: ";
for (unsigned i = 0; i != argc; ++i)
(*OS) << argv[i] << ' ';
(*OS) << '\n';
// Chain in a diagnostic client which will log the diagnostics.
DiagnosticClient *Logger =
new TextDiagnosticPrinter(*OS, DiagOpts, /*OwnsOutputStream=*/true);
DiagClient.reset(new ChainedDiagnosticClient(DiagClient.take(), Logger));
}
void CompilerInstance::createDiagnostics(int Argc, char **Argv) {
Diagnostics.reset(createDiagnostics(getDiagnosticOpts(), Argc, Argv));
if (Diagnostics)
DiagClient.reset(Diagnostics->getClient());
}
Diagnostic *CompilerInstance::createDiagnostics(const DiagnosticOptions &Opts,
int Argc, char **Argv) {
// Create the diagnostic client for reporting errors or for
// implementing -verify.
llvm::OwningPtr<DiagnosticClient> DiagClient;
if (Opts.VerifyDiagnostics) {
// When checking diagnostics, just buffer them up.
DiagClient.reset(new TextDiagnosticBuffer());
} else {
DiagClient.reset(new TextDiagnosticPrinter(llvm::errs(), Opts));
}
if (!Opts.DumpBuildInformation.empty())
SetUpBuildDumpLog(Opts, Argc, Argv, DiagClient);
// Configure our handling of diagnostics.
Diagnostic *Diags = new Diagnostic(DiagClient.take());
if (ProcessWarningOptions(*Diags, Opts))
return 0;
return Diags;
}
// File Manager
void CompilerInstance::createFileManager() {
FileMgr.reset(new FileManager());
}
// Source Manager
void CompilerInstance::createSourceManager() {
SourceMgr.reset(new SourceManager());
}
// Preprocessor
void CompilerInstance::createPreprocessor() {
PP.reset(createPreprocessor(getDiagnostics(), getLangOpts(),
getPreprocessorOpts(), getHeaderSearchOpts(),
getDependencyOutputOpts(), getTarget(),
getSourceManager(), getFileManager()));
}
Preprocessor *
CompilerInstance::createPreprocessor(Diagnostic &Diags,
const LangOptions &LangInfo,
const PreprocessorOptions &PPOpts,
const HeaderSearchOptions &HSOpts,
const DependencyOutputOptions &DepOpts,
const TargetInfo &Target,
SourceManager &SourceMgr,
FileManager &FileMgr) {
// Create a PTH manager if we are using some form of a token cache.
PTHManager *PTHMgr = 0;
if (!PPOpts.getTokenCache().empty())
PTHMgr = PTHManager::Create(PPOpts.getTokenCache(), Diags);
// FIXME: Don't fail like this.
if (Diags.hasErrorOccurred())
exit(1);
// Create the Preprocessor.
HeaderSearch *HeaderInfo = new HeaderSearch(FileMgr);
Preprocessor *PP = new Preprocessor(Diags, LangInfo, Target,
SourceMgr, *HeaderInfo, PTHMgr,
/*OwnsHeaderSearch=*/true);
// Note that this is different then passing PTHMgr to Preprocessor's ctor.
// That argument is used as the IdentifierInfoLookup argument to
// IdentifierTable's ctor.
if (PTHMgr) {
PTHMgr->setPreprocessor(PP);
PP->setPTHManager(PTHMgr);
}
InitializePreprocessor(*PP, PPOpts, HSOpts);
// Handle generating dependencies, if requested.
if (!DepOpts.OutputFile.empty())
AttachDependencyFileGen(*PP, DepOpts);
return PP;
}
// ASTContext
void CompilerInstance::createASTContext() {
Preprocessor &PP = getPreprocessor();
Context.reset(new ASTContext(getLangOpts(), PP.getSourceManager(),
getTarget(), PP.getIdentifierTable(),
PP.getSelectorTable(), PP.getBuiltinInfo(),
/*FreeMemory=*/ !getFrontendOpts().DisableFree,
/*size_reserve=*/ 0));
}
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