1 files changed, 264 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/Frontend/FrontendActions.cpp b/contrib/llvm/tools/clang/lib/Frontend/FrontendActions.cpp
new file mode 100644
index 0000000..6f84da9
--- /dev/null
+++ b/contrib/llvm/tools/clang/lib/Frontend/FrontendActions.cpp
@@ -0,0 +1,264 @@
+//===--- FrontendActions.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/FrontendActions.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/Lex/Pragma.h"
+#include "clang/Lex/Preprocessor.h"
+#include "clang/Parse/Parser.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Frontend/ASTConsumers.h"
+#include "clang/Frontend/ASTUnit.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Frontend/FrontendDiagnostic.h"
+#include "clang/Frontend/Utils.h"
+#include "clang/Serialization/ASTWriter.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/system_error.h"
+
+using namespace clang;
+
+//===----------------------------------------------------------------------===//
+// Custom Actions
+//===----------------------------------------------------------------------===//
+
+ASTConsumer *InitOnlyAction::CreateASTConsumer(CompilerInstance &CI,
+                                               StringRef InFile) {
+  return new ASTConsumer();
+}
+
+void InitOnlyAction::ExecuteAction() {
+}
+
+//===----------------------------------------------------------------------===//
+// AST Consumer Actions
+//===----------------------------------------------------------------------===//
+
+ASTConsumer *ASTPrintAction::CreateASTConsumer(CompilerInstance &CI,
+                                               StringRef InFile) {
+  if (raw_ostream *OS = CI.createDefaultOutputFile(false, InFile))
+    return CreateASTPrinter(OS);
+  return 0;
+}
+
+ASTConsumer *ASTDumpAction::CreateASTConsumer(CompilerInstance &CI,
+                                              StringRef InFile) {
+  return CreateASTDumper();
+}
+
+ASTConsumer *ASTDumpXMLAction::CreateASTConsumer(CompilerInstance &CI,
+                                                 StringRef InFile) {
+  raw_ostream *OS;
+  if (CI.getFrontendOpts().OutputFile.empty())
+    OS = &llvm::outs();
+  else
+    OS = CI.createDefaultOutputFile(false, InFile);
+  if (!OS) return 0;
+  return CreateASTDumperXML(*OS);
+}
+
+ASTConsumer *ASTViewAction::CreateASTConsumer(CompilerInstance &CI,
+                                              StringRef InFile) {
+  return CreateASTViewer();
+}
+
+ASTConsumer *DeclContextPrintAction::CreateASTConsumer(CompilerInstance &CI,
+                                                       StringRef InFile) {
+  return CreateDeclContextPrinter();
+}
+
+ASTConsumer *GeneratePCHAction::CreateASTConsumer(CompilerInstance &CI,
+                                                  StringRef InFile) {
+  std::string Sysroot;
+  std::string OutputFile;
+  raw_ostream *OS = 0;
+  if (ComputeASTConsumerArguments(CI, InFile, Sysroot, OutputFile, OS))
+    return 0;
+
+  if (!CI.getFrontendOpts().RelocatablePCH)
+    Sysroot.clear();
+  return new PCHGenerator(CI.getPreprocessor(), OutputFile, MakeModule, 
+                          Sysroot, OS);
+}
+
+bool GeneratePCHAction::ComputeASTConsumerArguments(CompilerInstance &CI,
+                                                    StringRef InFile,
+                                                    std::string &Sysroot,
+                                                    std::string &OutputFile,
+                                                    raw_ostream *&OS) {
+  Sysroot = CI.getHeaderSearchOpts().Sysroot;
+  if (CI.getFrontendOpts().RelocatablePCH && Sysroot.empty()) {
+    CI.getDiagnostics().Report(diag::err_relocatable_without_isysroot);
+    return true;
+  }
+
+  // We use createOutputFile here because this is exposed via libclang, and we
+  // must disable the RemoveFileOnSignal behavior.
+  // We use a temporary to avoid race conditions.
+  OS = CI.createOutputFile(CI.getFrontendOpts().OutputFile, /*Binary=*/true,
+                           /*RemoveFileOnSignal=*/false, InFile,
+                           /*Extension=*/"", /*useTemporary=*/true);
+  if (!OS)
+    return true;
+
+  OutputFile = CI.getFrontendOpts().OutputFile;
+  return false;
+}
+
+ASTConsumer *SyntaxOnlyAction::CreateASTConsumer(CompilerInstance &CI,
+                                                 StringRef InFile) {
+  return new ASTConsumer();
+}
+
+//===----------------------------------------------------------------------===//
+// Preprocessor Actions
+//===----------------------------------------------------------------------===//
+
+void DumpRawTokensAction::ExecuteAction() {
+  Preprocessor &PP = getCompilerInstance().getPreprocessor();
+  SourceManager &SM = PP.getSourceManager();
+
+  // Start lexing the specified input file.
+  const llvm::MemoryBuffer *FromFile = SM.getBuffer(SM.getMainFileID());
+  Lexer RawLex(SM.getMainFileID(), FromFile, SM, PP.getLangOptions());
+  RawLex.SetKeepWhitespaceMode(true);
+
+  Token RawTok;
+  RawLex.LexFromRawLexer(RawTok);
+  while (RawTok.isNot(tok::eof)) {
+    PP.DumpToken(RawTok, true);
+    llvm::errs() << "\n";
+    RawLex.LexFromRawLexer(RawTok);
+  }
+}
+
+void DumpTokensAction::ExecuteAction() {
+  Preprocessor &PP = getCompilerInstance().getPreprocessor();
+  // Start preprocessing the specified input file.
+  Token Tok;
+  PP.EnterMainSourceFile();
+  do {
+    PP.Lex(Tok);
+    PP.DumpToken(Tok, true);
+    llvm::errs() << "\n";
+  } while (Tok.isNot(tok::eof));
+}
+
+void GeneratePTHAction::ExecuteAction() {
+  CompilerInstance &CI = getCompilerInstance();
+  if (CI.getFrontendOpts().OutputFile.empty() ||
+      CI.getFrontendOpts().OutputFile == "-") {
+    // FIXME: Don't fail this way.
+    // FIXME: Verify that we can actually seek in the given file.
+    llvm::report_fatal_error("PTH requires a seekable file for output!");
+  }
+  llvm::raw_fd_ostream *OS =
+    CI.createDefaultOutputFile(true, getCurrentFile());
+  if (!OS) return;
+
+  CacheTokens(CI.getPreprocessor(), OS);
+}
+
+void PreprocessOnlyAction::ExecuteAction() {
+  Preprocessor &PP = getCompilerInstance().getPreprocessor();
+
+  // Ignore unknown pragmas.
+  PP.AddPragmaHandler(new EmptyPragmaHandler());
+
+  Token Tok;
+  // Start parsing the specified input file.
+  PP.EnterMainSourceFile();
+  do {
+    PP.Lex(Tok);
+  } while (Tok.isNot(tok::eof));
+}
+
+void PrintPreprocessedAction::ExecuteAction() {
+  CompilerInstance &CI = getCompilerInstance();
+  // Output file may need to be set to 'Binary', to avoid converting Unix style
+  // line feeds (<LF>) to Microsoft style line feeds (<CR><LF>).
+  //
+  // Look to see what type of line endings the file uses. If there's a
+  // CRLF, then we won't open the file up in binary mode. If there is
+  // just an LF or CR, then we will open the file up in binary mode.
+  // In this fashion, the output format should match the input format, unless
+  // the input format has inconsistent line endings.
+  //
+  // This should be a relatively fast operation since most files won't have
+  // all of their source code on a single line. However, that is still a 
+  // concern, so if we scan for too long, we'll just assume the file should
+  // be opened in binary mode.
+  bool BinaryMode = true;
+  bool InvalidFile = false;
+  const SourceManager& SM = CI.getSourceManager();
+  const llvm::MemoryBuffer *Buffer = SM.getBuffer(SM.getMainFileID(), 
+                                                     &InvalidFile);
+  if (!InvalidFile) {
+    const char *cur = Buffer->getBufferStart();
+    const char *end = Buffer->getBufferEnd();
+    const char *next = (cur != end) ? cur + 1 : end;
+
+    // Limit ourselves to only scanning 256 characters into the source
+    // file.  This is mostly a sanity check in case the file has no 
+    // newlines whatsoever.
+    if (end - cur > 256) end = cur + 256;
+	  
+    while (next < end) {
+      if (*cur == 0x0D) {  // CR
+        if (*next == 0x0A)  // CRLF
+          BinaryMode = false;
+
+        break;
+      } else if (*cur == 0x0A)  // LF
+        break;
+
+      ++cur, ++next;
+    }
+  }
+
+  raw_ostream *OS = CI.createDefaultOutputFile(BinaryMode, getCurrentFile());
+  if (!OS) return;
+
+  DoPrintPreprocessedInput(CI.getPreprocessor(), OS,
+                           CI.getPreprocessorOutputOpts());
+}
+
+void PrintPreambleAction::ExecuteAction() {
+  switch (getCurrentFileKind()) {
+  case IK_C:
+  case IK_CXX:
+  case IK_ObjC:
+  case IK_ObjCXX:
+  case IK_OpenCL:
+  case IK_CUDA:
+    break;
+      
+  case IK_None:
+  case IK_Asm:
+  case IK_PreprocessedC:
+  case IK_PreprocessedCXX:
+  case IK_PreprocessedObjC:
+  case IK_PreprocessedObjCXX:
+  case IK_AST:
+  case IK_LLVM_IR:
+    // We can't do anything with these.
+    return;
+  }
+  
+  CompilerInstance &CI = getCompilerInstance();
+  llvm::MemoryBuffer *Buffer
+      = CI.getFileManager().getBufferForFile(getCurrentFile());
+  if (Buffer) {
+    unsigned Preamble = Lexer::ComputePreamble(Buffer, CI.getLangOpts()).first;
+    llvm::outs().write(Buffer->getBufferStart(), Preamble);
+    delete Buffer;
+  }
+}