1 files changed, 591 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/Frontend/CompilerInstance.cpp b/contrib/llvm/tools/clang/lib/Frontend/CompilerInstance.cpp
new file mode 100644
index 0000000..fd593de
--- /dev/null
+++ b/contrib/llvm/tools/clang/lib/Frontend/CompilerInstance.cpp
@@ -0,0 +1,591 @@
+//===--- 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/Sema/Sema.h"
+#include "clang/AST/ASTConsumer.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/Basic/Version.h"
+#include "clang/Lex/HeaderSearch.h"
+#include "clang/Lex/Preprocessor.h"
+#include "clang/Lex/PTHManager.h"
+#include "clang/Frontend/ChainedDiagnosticClient.h"
+#include "clang/Frontend/FrontendAction.h"
+#include "clang/Frontend/FrontendDiagnostic.h"
+#include "clang/Frontend/TextDiagnosticPrinter.h"
+#include "clang/Frontend/VerifyDiagnosticsClient.h"
+#include "clang/Frontend/Utils.h"
+#include "clang/Serialization/ASTReader.h"
+#include "clang/Sema/CodeCompleteConsumer.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/Support/Timer.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Program.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/system_error.h"
+using namespace clang;
+
+CompilerInstance::CompilerInstance()
+  : Invocation(new CompilerInvocation()) {
+}
+
+CompilerInstance::~CompilerInstance() {
+}
+
+void CompilerInstance::setInvocation(CompilerInvocation *Value) {
+  Invocation.reset(Value);
+}
+
+void CompilerInstance::setDiagnostics(Diagnostic *Value) {
+  Diagnostics = Value;
+}
+
+void CompilerInstance::setTarget(TargetInfo *Value) {
+  Target.reset(Value);
+}
+
+void CompilerInstance::setFileManager(FileManager *Value) {
+  FileMgr.reset(Value);
+}
+
+void CompilerInstance::setSourceManager(SourceManager *Value) {
+  SourceMgr.reset(Value);
+}
+
+void CompilerInstance::setPreprocessor(Preprocessor *Value) {
+  PP.reset(Value);
+}
+
+void CompilerInstance::setASTContext(ASTContext *Value) {
+  Context.reset(Value);
+}
+
+void CompilerInstance::setSema(Sema *S) {
+  TheSema.reset(S);
+}
+
+void CompilerInstance::setASTConsumer(ASTConsumer *Value) {
+  Consumer.reset(Value);
+}
+
+void CompilerInstance::setCodeCompletionConsumer(CodeCompleteConsumer *Value) {
+  CompletionConsumer.reset(Value);
+}
+
+// Diagnostics
+static void SetUpBuildDumpLog(const DiagnosticOptions &DiagOpts,
+                              unsigned argc, const char* const *argv,
+                              Diagnostic &Diags) {
+  std::string ErrorInfo;
+  llvm::OwningPtr<llvm::raw_ostream> OS(
+    new llvm::raw_fd_ostream(DiagOpts.DumpBuildInformation.c_str(), ErrorInfo));
+  if (!ErrorInfo.empty()) {
+    Diags.Report(diag::err_fe_unable_to_open_logfile)
+                 << DiagOpts.DumpBuildInformation << ErrorInfo;
+    return;
+  }
+
+  (*OS) << "clang -cc1 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.take(), DiagOpts, /*OwnsOutputStream=*/true);
+  Diags.setClient(new ChainedDiagnosticClient(Diags.takeClient(), Logger));
+}
+
+void CompilerInstance::createDiagnostics(int Argc, const char* const *Argv,
+                                         DiagnosticClient *Client) {
+  Diagnostics = createDiagnostics(getDiagnosticOpts(), Argc, Argv, Client);
+}
+
+llvm::IntrusiveRefCntPtr<Diagnostic> 
+CompilerInstance::createDiagnostics(const DiagnosticOptions &Opts,
+                                    int Argc, const char* const *Argv,
+                                    DiagnosticClient *Client) {
+  llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+  llvm::IntrusiveRefCntPtr<Diagnostic> Diags(new Diagnostic(DiagID));
+
+  // Create the diagnostic client for reporting errors or for
+  // implementing -verify.
+  if (Client)
+    Diags->setClient(Client);
+  else
+    Diags->setClient(new TextDiagnosticPrinter(llvm::errs(), Opts));
+
+  // Chain in -verify checker, if requested.
+  if (Opts.VerifyDiagnostics)
+    Diags->setClient(new VerifyDiagnosticsClient(*Diags, Diags->takeClient()));
+
+  if (!Opts.DumpBuildInformation.empty())
+    SetUpBuildDumpLog(Opts, Argc, Argv, *Diags);
+
+  // Configure our handling of diagnostics.
+  ProcessWarningOptions(*Diags, Opts);
+
+  return Diags;
+}
+
+// File Manager
+
+void CompilerInstance::createFileManager() {
+  FileMgr.reset(new FileManager(getFileSystemOpts()));
+}
+
+// Source Manager
+
+void CompilerInstance::createSourceManager(FileManager &FileMgr) {
+  SourceMgr.reset(new SourceManager(getDiagnostics(), FileMgr));
+}
+
+// Preprocessor
+
+void CompilerInstance::createPreprocessor() {
+  PP.reset(createPreprocessor(getDiagnostics(), getLangOpts(),
+                              getPreprocessorOpts(), getHeaderSearchOpts(),
+                              getDependencyOutputOpts(), getTarget(),
+                              getFrontendOpts(), getSourceManager(),
+                              getFileManager()));
+}
+
+Preprocessor *
+CompilerInstance::createPreprocessor(Diagnostic &Diags,
+                                     const LangOptions &LangInfo,
+                                     const PreprocessorOptions &PPOpts,
+                                     const HeaderSearchOptions &HSOpts,
+                                     const DependencyOutputOptions &DepOpts,
+                                     const TargetInfo &Target,
+                                     const FrontendOptions &FEOpts,
+                                     SourceManager &SourceMgr,
+                                     FileManager &FileMgr) {
+  // Create a PTH manager if we are using some form of a token cache.
+  PTHManager *PTHMgr = 0;
+  if (!PPOpts.TokenCache.empty())
+    PTHMgr = PTHManager::Create(PPOpts.TokenCache, Diags);
+
+  // 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);
+  }
+
+  if (PPOpts.DetailedRecord)
+    PP->createPreprocessingRecord();
+  
+  InitializePreprocessor(*PP, PPOpts, HSOpts, FEOpts);
+
+  // Handle generating dependencies, if requested.
+  if (!DepOpts.OutputFile.empty())
+    AttachDependencyFileGen(*PP, DepOpts);
+
+  // Handle generating header include information, if requested.
+  if (DepOpts.ShowHeaderIncludes)
+    AttachHeaderIncludeGen(*PP);
+  if (!DepOpts.HeaderIncludeOutputFile.empty()) {
+    llvm::StringRef OutputPath = DepOpts.HeaderIncludeOutputFile;
+    if (OutputPath == "-")
+      OutputPath = "";
+    AttachHeaderIncludeGen(*PP, /*ShowAllHeaders=*/true, OutputPath);
+  }
+
+  return PP;
+}
+
+// ASTContext
+
+void CompilerInstance::createASTContext() {
+  Preprocessor &PP = getPreprocessor();
+  Context.reset(new ASTContext(getLangOpts(), PP.getSourceManager(),
+                               getTarget(), PP.getIdentifierTable(),
+                               PP.getSelectorTable(), PP.getBuiltinInfo(),
+                               /*size_reserve=*/ 0));
+}
+
+// ExternalASTSource
+
+void CompilerInstance::createPCHExternalASTSource(llvm::StringRef Path,
+                                                  bool DisablePCHValidation,
+                                                  bool DisableStatCache,
+                                                 void *DeserializationListener){
+  llvm::OwningPtr<ExternalASTSource> Source;
+  bool Preamble = getPreprocessorOpts().PrecompiledPreambleBytes.first != 0;
+  Source.reset(createPCHExternalASTSource(Path, getHeaderSearchOpts().Sysroot,
+                                          DisablePCHValidation, 
+                                          DisableStatCache,
+                                          getPreprocessor(), getASTContext(),
+                                          DeserializationListener,
+                                          Preamble));
+  getASTContext().setExternalSource(Source);
+}
+
+ExternalASTSource *
+CompilerInstance::createPCHExternalASTSource(llvm::StringRef Path,
+                                             const std::string &Sysroot,
+                                             bool DisablePCHValidation,
+                                             bool DisableStatCache,
+                                             Preprocessor &PP,
+                                             ASTContext &Context,
+                                             void *DeserializationListener,
+                                             bool Preamble) {
+  llvm::OwningPtr<ASTReader> Reader;
+  Reader.reset(new ASTReader(PP, &Context,
+                             Sysroot.empty() ? 0 : Sysroot.c_str(),
+                             DisablePCHValidation, DisableStatCache));
+
+  Reader->setDeserializationListener(
+            static_cast<ASTDeserializationListener *>(DeserializationListener));
+  switch (Reader->ReadAST(Path,
+                          Preamble ? ASTReader::Preamble : ASTReader::PCH)) {
+  case ASTReader::Success:
+    // Set the predefines buffer as suggested by the PCH reader. Typically, the
+    // predefines buffer will be empty.
+    PP.setPredefines(Reader->getSuggestedPredefines());
+    return Reader.take();
+
+  case ASTReader::Failure:
+    // Unrecoverable failure: don't even try to process the input file.
+    break;
+
+  case ASTReader::IgnorePCH:
+    // No suitable PCH file could be found. Return an error.
+    break;
+  }
+
+  return 0;
+}
+
+// Code Completion
+
+static bool EnableCodeCompletion(Preprocessor &PP, 
+                                 const std::string &Filename,
+                                 unsigned Line,
+                                 unsigned Column) {
+  // Tell the source manager to chop off the given file at a specific
+  // line and column.
+  const FileEntry *Entry = PP.getFileManager().getFile(Filename);
+  if (!Entry) {
+    PP.getDiagnostics().Report(diag::err_fe_invalid_code_complete_file)
+      << Filename;
+    return true;
+  }
+
+  // Truncate the named file at the given line/column.
+  PP.SetCodeCompletionPoint(Entry, Line, Column);
+  return false;
+}
+
+void CompilerInstance::createCodeCompletionConsumer() {
+  const ParsedSourceLocation &Loc = getFrontendOpts().CodeCompletionAt;
+  if (!CompletionConsumer) {
+    CompletionConsumer.reset(
+      createCodeCompletionConsumer(getPreprocessor(),
+                                   Loc.FileName, Loc.Line, Loc.Column,
+                                   getFrontendOpts().ShowMacrosInCodeCompletion,
+                             getFrontendOpts().ShowCodePatternsInCodeCompletion,
+                           getFrontendOpts().ShowGlobalSymbolsInCodeCompletion,
+                                   llvm::outs()));
+    if (!CompletionConsumer)
+      return;
+  } else if (EnableCodeCompletion(getPreprocessor(), Loc.FileName,
+                                  Loc.Line, Loc.Column)) {
+    CompletionConsumer.reset();
+    return;
+  }
+
+  if (CompletionConsumer->isOutputBinary() &&
+      llvm::sys::Program::ChangeStdoutToBinary()) {
+    getPreprocessor().getDiagnostics().Report(diag::err_fe_stdout_binary);
+    CompletionConsumer.reset();
+  }
+}
+
+void CompilerInstance::createFrontendTimer() {
+  FrontendTimer.reset(new llvm::Timer("Clang front-end timer"));
+}
+
+CodeCompleteConsumer *
+CompilerInstance::createCodeCompletionConsumer(Preprocessor &PP,
+                                               const std::string &Filename,
+                                               unsigned Line,
+                                               unsigned Column,
+                                               bool ShowMacros,
+                                               bool ShowCodePatterns,
+                                               bool ShowGlobals,
+                                               llvm::raw_ostream &OS) {
+  if (EnableCodeCompletion(PP, Filename, Line, Column))
+    return 0;
+
+  // Set up the creation routine for code-completion.
+  return new PrintingCodeCompleteConsumer(ShowMacros, ShowCodePatterns, 
+                                          ShowGlobals, OS);
+}
+
+void CompilerInstance::createSema(bool CompleteTranslationUnit,
+                                  CodeCompleteConsumer *CompletionConsumer) {
+  TheSema.reset(new Sema(getPreprocessor(), getASTContext(), getASTConsumer(),
+                         CompleteTranslationUnit, CompletionConsumer));
+}
+
+// Output Files
+
+void CompilerInstance::addOutputFile(const OutputFile &OutFile) {
+  assert(OutFile.OS && "Attempt to add empty stream to output list!");
+  OutputFiles.push_back(OutFile);
+}
+
+void CompilerInstance::clearOutputFiles(bool EraseFiles) {
+  for (std::list<OutputFile>::iterator
+         it = OutputFiles.begin(), ie = OutputFiles.end(); it != ie; ++it) {
+    delete it->OS;
+    if (!it->TempFilename.empty()) {
+      llvm::sys::Path TempPath(it->TempFilename);
+      if (EraseFiles)
+        TempPath.eraseFromDisk();
+      else {
+        std::string Error;
+        llvm::sys::Path NewOutFile(it->Filename);
+        // If '-working-directory' was passed, the output filename should be
+        // relative to that.
+        FileManager::FixupRelativePath(NewOutFile, getFileSystemOpts());
+        if (TempPath.renamePathOnDisk(NewOutFile, &Error)) {
+          getDiagnostics().Report(diag::err_fe_unable_to_rename_temp)
+            << it->TempFilename << it->Filename << Error;
+          TempPath.eraseFromDisk();
+        }
+      }
+    } else if (!it->Filename.empty() && EraseFiles)
+      llvm::sys::Path(it->Filename).eraseFromDisk();
+      
+  }
+  OutputFiles.clear();
+}
+
+llvm::raw_fd_ostream *
+CompilerInstance::createDefaultOutputFile(bool Binary,
+                                          llvm::StringRef InFile,
+                                          llvm::StringRef Extension) {
+  return createOutputFile(getFrontendOpts().OutputFile, Binary,
+                          /*RemoveFileOnSignal=*/true, InFile, Extension);
+}
+
+llvm::raw_fd_ostream *
+CompilerInstance::createOutputFile(llvm::StringRef OutputPath,
+                                   bool Binary, bool RemoveFileOnSignal,
+                                   llvm::StringRef InFile,
+                                   llvm::StringRef Extension) {
+  std::string Error, OutputPathName, TempPathName;
+  llvm::raw_fd_ostream *OS = createOutputFile(OutputPath, Error, Binary,
+                                              RemoveFileOnSignal,
+                                              InFile, Extension,
+                                              &OutputPathName,
+                                              &TempPathName);
+  if (!OS) {
+    getDiagnostics().Report(diag::err_fe_unable_to_open_output)
+      << OutputPath << Error;
+    return 0;
+  }
+
+  // Add the output file -- but don't try to remove "-", since this means we are
+  // using stdin.
+  addOutputFile(OutputFile((OutputPathName != "-") ? OutputPathName : "",
+                TempPathName, OS));
+
+  return OS;
+}
+
+llvm::raw_fd_ostream *
+CompilerInstance::createOutputFile(llvm::StringRef OutputPath,
+                                   std::string &Error,
+                                   bool Binary,
+                                   bool RemoveFileOnSignal,
+                                   llvm::StringRef InFile,
+                                   llvm::StringRef Extension,
+                                   std::string *ResultPathName,
+                                   std::string *TempPathName) {
+  std::string OutFile, TempFile;
+  if (!OutputPath.empty()) {
+    OutFile = OutputPath;
+  } else if (InFile == "-") {
+    OutFile = "-";
+  } else if (!Extension.empty()) {
+    llvm::sys::Path Path(InFile);
+    Path.eraseSuffix();
+    Path.appendSuffix(Extension);
+    OutFile = Path.str();
+  } else {
+    OutFile = "-";
+  }
+  
+  if (OutFile != "-") {
+    llvm::sys::Path OutPath(OutFile);
+    // Only create the temporary if we can actually write to OutPath, otherwise
+    // we want to fail early.
+    bool Exists;
+    if ((llvm::sys::fs::exists(OutPath.str(), Exists) || !Exists) ||
+        (OutPath.isRegularFile() && OutPath.canWrite())) {
+      // Create a temporary file.
+      llvm::sys::Path TempPath(OutFile);
+      if (!TempPath.createTemporaryFileOnDisk())
+        TempFile = TempPath.str();
+    }
+  }
+
+  std::string OSFile = OutFile;
+  if (!TempFile.empty())
+    OSFile = TempFile;
+
+  llvm::OwningPtr<llvm::raw_fd_ostream> OS(
+    new llvm::raw_fd_ostream(OSFile.c_str(), Error,
+                             (Binary ? llvm::raw_fd_ostream::F_Binary : 0)));
+  if (!Error.empty())
+    return 0;
+
+  // Make sure the out stream file gets removed if we crash.
+  if (RemoveFileOnSignal)
+    llvm::sys::RemoveFileOnSignal(llvm::sys::Path(OSFile));
+
+  if (ResultPathName)
+    *ResultPathName = OutFile;
+  if (TempPathName)
+    *TempPathName = TempFile;
+
+  return OS.take();
+}
+
+// Initialization Utilities
+
+bool CompilerInstance::InitializeSourceManager(llvm::StringRef InputFile) {
+  return InitializeSourceManager(InputFile, getDiagnostics(), getFileManager(),
+                                 getSourceManager(), getFrontendOpts());
+}
+
+bool CompilerInstance::InitializeSourceManager(llvm::StringRef InputFile,
+                                               Diagnostic &Diags,
+                                               FileManager &FileMgr,
+                                               SourceManager &SourceMgr,
+                                               const FrontendOptions &Opts) {
+  // Figure out where to get and map in the main file, unless it's already
+  // been created (e.g., by a precompiled preamble).
+  if (!SourceMgr.getMainFileID().isInvalid()) {
+    // Do nothing: the main file has already been set.
+  } else if (InputFile != "-") {
+    const FileEntry *File = FileMgr.getFile(InputFile);
+    if (!File) {
+      Diags.Report(diag::err_fe_error_reading) << InputFile;
+      return false;
+    }
+    SourceMgr.createMainFileID(File);
+  } else {
+    llvm::OwningPtr<llvm::MemoryBuffer> SB;
+    if (llvm::MemoryBuffer::getSTDIN(SB)) {
+      // FIXME: Give ec.message() in this diag.
+      Diags.Report(diag::err_fe_error_reading_stdin);
+      return false;
+    }
+    const FileEntry *File = FileMgr.getVirtualFile(SB->getBufferIdentifier(),
+                                                   SB->getBufferSize(), 0);
+    SourceMgr.createMainFileID(File);
+    SourceMgr.overrideFileContents(File, SB.take());
+  }
+
+  assert(!SourceMgr.getMainFileID().isInvalid() &&
+         "Couldn't establish MainFileID!");
+  return true;
+}
+
+// High-Level Operations
+
+bool CompilerInstance::ExecuteAction(FrontendAction &Act) {
+  assert(hasDiagnostics() && "Diagnostics engine is not initialized!");
+  assert(!getFrontendOpts().ShowHelp && "Client must handle '-help'!");
+  assert(!getFrontendOpts().ShowVersion && "Client must handle '-version'!");
+
+  // FIXME: Take this as an argument, once all the APIs we used have moved to
+  // taking it as an input instead of hard-coding llvm::errs.
+  llvm::raw_ostream &OS = llvm::errs();
+
+  // Create the target instance.
+  setTarget(TargetInfo::CreateTargetInfo(getDiagnostics(), getTargetOpts()));
+  if (!hasTarget())
+    return false;
+
+  // Inform the target of the language options.
+  //
+  // FIXME: We shouldn't need to do this, the target should be immutable once
+  // created. This complexity should be lifted elsewhere.
+  getTarget().setForcedLangOptions(getLangOpts());
+
+  // Validate/process some options.
+  if (getHeaderSearchOpts().Verbose)
+    OS << "clang -cc1 version " CLANG_VERSION_STRING
+       << " based upon " << PACKAGE_STRING
+       << " hosted on " << llvm::sys::getHostTriple() << "\n";
+
+  if (getFrontendOpts().ShowTimers)
+    createFrontendTimer();
+
+  if (getFrontendOpts().ShowStats)
+    llvm::EnableStatistics();
+    
+  for (unsigned i = 0, e = getFrontendOpts().Inputs.size(); i != e; ++i) {
+    const std::string &InFile = getFrontendOpts().Inputs[i].second;
+
+    // Reset the ID tables if we are reusing the SourceManager.
+    if (hasSourceManager())
+      getSourceManager().clearIDTables();
+
+    if (Act.BeginSourceFile(*this, InFile, getFrontendOpts().Inputs[i].first)) {
+      Act.Execute();
+      Act.EndSourceFile();
+    }
+  }
+
+  if (getDiagnosticOpts().ShowCarets) {
+    // We can have multiple diagnostics sharing one diagnostic client.
+    // Get the total number of warnings/errors from the client.
+    unsigned NumWarnings = getDiagnostics().getClient()->getNumWarnings();
+    unsigned NumErrors = getDiagnostics().getClient()->getNumErrors();
+    
+    if (NumWarnings)
+      OS << NumWarnings << " warning" << (NumWarnings == 1 ? "" : "s");
+    if (NumWarnings && NumErrors)
+      OS << " and ";
+    if (NumErrors)
+      OS << NumErrors << " error" << (NumErrors == 1 ? "" : "s");
+    if (NumWarnings || NumErrors)
+      OS << " generated.\n";
+  }
+
+  if (getFrontendOpts().ShowStats && hasFileManager()) {
+    getFileManager().PrintStats();
+    OS << "\n";
+  }
+
+  return !getDiagnostics().getClient()->getNumErrors();
+}
+
+