1 files changed, 0 insertions, 248 deletions
diff --git a/clang/lib/Lex/PTHManager.cpp b/clang/lib/Lex/PTHManager.cpp
deleted file mode 100644
index 594f55d454d..00000000000
--- a/clang/lib/Lex/PTHManager.cpp
+++ /dev/null
@@ -1,248 +0,0 @@
-//===--- PTHManager.cpp - Manager object for PTH processing -----*- 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 PTHManager interface.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Lex/PTHManager.h"
-#include "clang/Lex/Token.h"
-#include "clang/Lex/Preprocessor.h"
-#include "clang/Basic/FileManager.h"
-#include "clang/Basic/IdentifierTable.h"
-#include "llvm/Support/Compiler.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/ADT/OwningPtr.h"
-#include "llvm/ADT/DenseMap.h"
-
-using namespace clang;
-
-//===----------------------------------------------------------------------===//
-// Utility methods for reading from the mmap'ed PTH file.
-//===----------------------------------------------------------------------===//
-
-static uint8_t Read8(const char*& data) {
-  return (uint8_t) *(data++);
-}
-
-static uint32_t Read32(const char*& data) {
-  uint32_t V = (uint32_t) Read8(data);
-  V |= (((uint32_t) Read8(data)) << 8);
-  V |= (((uint32_t) Read8(data)) << 16);
-  V |= (((uint32_t) Read8(data)) << 24);
-  return V;
-}
-
-//===----------------------------------------------------------------------===//
-// Internal Data Structures.
-//===----------------------------------------------------------------------===//
-
-typedef llvm::DenseMap<uint32_t, IdentifierInfo*> IDCache;
-
-/// PTHFileLookup - This internal data structure is used by the PTHManager
-///  to map from FileEntry objects managed by FileManager to offsets within
-///  the PTH file.
-namespace {
-class VISIBILITY_HIDDEN PTHFileLookup {
-public:
-  class Val {
-    uint32_t v;
-    
-  public:
-    Val() : v(~0) {}
-    Val(uint32_t x) : v(x) {}
-
-    operator uint32_t() const {
-      assert(v != ~((uint32_t)0) && "PTHFileLookup entry initialized.");
-      return v;
-    }
-    
-    Val& operator=(uint32_t x) { v = x; return *this; }
-    bool isValid() const { return v != ~((uint32_t)0); }
-  };
-    
-private:
-  llvm::StringMap<Val> FileMap;
-
-public:
-  PTHFileLookup() {};
-  
-  Val Lookup(const FileEntry* FE) {
-    const char* s = FE->getName();
-    unsigned size = strlen(s);
-    return FileMap.GetOrCreateValue(s, s+size).getValue();
-  }
-  
-  void ReadTable(const char* D) {    
-    uint32_t N = Read32(D);     // Read the length of the table.
-    
-    for ( ; N > 0; --N) {       // The rest of the data is the table itself.
-      uint32_t len = Read32(D);
-      const char* s = D;
-      D += len;
-      FileMap.GetOrCreateValue(s, s+len).getValue() = Read32(D);
-    }
-  }
-};
-} // end anonymous namespace
-
-//===----------------------------------------------------------------------===//
-// PTHManager methods.
-//===----------------------------------------------------------------------===//
-
-PTHManager::PTHManager(const llvm::MemoryBuffer* buf, void* fileLookup,
-                       const char* idDataTable, Preprocessor& pp)
-  : Buf(buf), PersistentIDCache(0), FileLookup(fileLookup),
-    IdDataTable(idDataTable), ITable(pp.getIdentifierTable()), PP(pp) {}
-
-PTHManager::~PTHManager() {
-  delete Buf;
-  delete (PTHFileLookup*) FileLookup;
-  delete (IDCache*) PersistentIDCache;
-}
-
-PTHManager* PTHManager::Create(const std::string& file, Preprocessor& PP) {
-
-  // Memory map the PTH file.
-  llvm::OwningPtr<llvm::MemoryBuffer>
-    File(llvm::MemoryBuffer::getFile(file.c_str()));
-
-  if (!File)
-    return 0;
-
-  // Get the buffer ranges and check if there are at least three 32-bit
-  // words at the end of the file.
-  const char* BufBeg = File->getBufferStart();
-  const char* BufEnd = File->getBufferEnd();
-  
-  if(!(BufEnd > BufBeg + sizeof(uint32_t)*3)) {
-    assert(false && "Invalid PTH file.");
-    return 0; // FIXME: Proper error diagnostic?
-  }
-
-  // Compute the address of the index table at the end of the PTH file.
-  // This table contains the offset of the file lookup table, the
-  // persistent ID -> identifer data table.
-  const char* EndTable = BufEnd - sizeof(uint32_t)*3;
-
-  // Construct the file lookup table.  This will be used for mapping from
-  // FileEntry*'s to cached tokens.
-  const char* FileTableOffset = EndTable + sizeof(uint32_t)*2;
-  const char* FileTable = BufBeg + Read32(FileTableOffset);
-  
-  if (!(FileTable > BufBeg && FileTable < BufEnd)) {
-    assert(false && "Invalid PTH file.");
-    return 0; // FIXME: Proper error diagnostic?
-  }
-  
-  llvm::OwningPtr<PTHFileLookup> FL(new PTHFileLookup());
-  FL->ReadTable(FileTable);
-
-  // Get the location of the table mapping from persistent ids to the
-  // data needed to reconstruct identifiers.
-  const char* IDTableOffset = EndTable + sizeof(uint32_t)*1;
-  const char* IData = BufBeg + Read32(IDTableOffset);
-  if (!(IData > BufBeg && IData < BufEnd)) {
-    assert(false && "Invalid PTH file.");
-    return 0; // FIXME: Proper error diagnostic?
-  }
-
-  return new PTHManager(File.take(), FL.take(), IData, PP);
-}
-
-IdentifierInfo* PTHManager::ReadIdentifierInfo(const char*& D) {
-  // Read the persistent ID from the PTH file.
-  uint32_t persistentID = Read32(D);
-
-  // A persistent ID of '0' always maps to NULL.
-  if (!persistentID)
-    return 0;
-  
-  // Adjust the persistent ID by subtracting '1' so that it can be used
-  // as an index within a table in the PTH file.
-  --persistentID;
-  
-  // Check if the IdentifierInfo has already been resolved.
-  if (!PersistentIDCache)
-    PersistentIDCache = new IDCache();
-
-  // FIXME: We can make this an array, but what is the performance tradeoff?
-  IdentifierInfo*& II = (*((IDCache*) PersistentIDCache))[persistentID];
-  if (II) return II;
-
-  // Look in the PTH file for the string data for the IdentifierInfo object.
-  const char* TableEntry = IdDataTable + sizeof(uint32_t) * persistentID;
-  const char* IDData = Buf->getBufferStart() + Read32(TableEntry);
-  assert(IDData < Buf->getBufferEnd());
-
-  // Read the length of the string.
-  uint32_t len = Read32(IDData);  
-  
-  // Get the IdentifierInfo* with the specified string.
-  II = &ITable.get(IDData, IDData+len);
-  return II;
-}
-
-void PTHManager::ReadToken(const char*& D, unsigned FileID, Token& T) {
-  // Clear the token.
-  // FIXME: Setting the flags directly should obviate this step.
-  T.startToken();
-  
-  // Read the type of the token.
-  T.setKind((tok::TokenKind) Read8(D));
-
-  // Set flags.  This is gross, since we are really setting multiple flags.
-  T.setFlag((Token::TokenFlags) Read8(D));
-  
-  // Set the IdentifierInfo* (if any).
-  T.setIdentifierInfo(ReadIdentifierInfo(D));
-  
-  // Set the SourceLocation.  Since all tokens are constructed using a
-  // raw lexer, they will all be offseted from the same FileID.
-  T.setLocation(SourceLocation::getFileLoc(FileID, Read32(D)));
-
-  // Finally, read and set the length of the token.
-  T.setLength(Read32(D));
-}
-
-PTHLexer* PTHManager::CreateLexer(unsigned FileID, const FileEntry* FE) {
-  
-  if (!FE)
-    return 0;
-  
-  // Lookup the FileEntry object in our file lookup data structure.  It will
-  // return a variant that indicates whether or not there is an offset within
-  // the PTH file that contains cached tokens.
-  PTHFileLookup::Val Off = ((PTHFileLookup*) FileLookup)->Lookup(FE);
-
-  if (!Off.isValid()) // No tokens available.
-    return 0;
-
-  // Compute the offset of the token data within the buffer.
-  const char* data = Buf->getBufferStart() + Off;
-  assert(data < Buf->getBufferEnd());
-  
-  // First cut: read the tokens from the file into a vector.
-  // Later, stream them.  
-  SourceLocation Loc = SourceLocation::getFileLoc(FileID, 0);
-  llvm::OwningPtr<PTHLexer> L(new PTHLexer(PP, Loc));
-  std::vector<Token>& Tokens = L->getTokens();
-  
-  Token T;
-  do {
-    ReadToken(data, FileID, T);
-    Tokens.push_back(T);
-  }
-  while (T.isNot(tok::eof));
-
-  // Return the lexer to the client.  The client assumes ownership of this
-  // PTHLexer object.
-  return L.take();
-}