Finish hooking up the scaffolding for headermaps. They can now do everything

except resolve lookups.

llvm-svn: 45111

2 files changed, 31 insertions, 11 deletions

diff --git a/clang/Lex/HeaderMap.cpp b/clang/Lex/HeaderMap.cpp
index ebcbc17f80f..c698aba0663 100644
--- a/clang/Lex/HeaderMap.cpp
+++ b/clang/Lex/HeaderMap.cpp
@@ -44,11 +44,11 @@ const HeaderMap *HeaderMap::Create(const FileEntry *FE) {
   unsigned FileSize = FE->getSize();
   if (FileSize <= sizeof(HMapHeader)) return 0;
   
-  llvm::scoped_ptr<const llvm::MemoryBuffer> File( 
+  llvm::scoped_ptr<const llvm::MemoryBuffer> FileBuffer( 
     llvm::MemoryBuffer::getFile(FE->getName(), strlen(FE->getName()), 0,
                                 FE->getSize()));
-  if (File == 0) return 0;  // Unreadable file?
-  const char *FileStart = File->getBufferStart();
+  if (FileBuffer == 0) return 0;  // Unreadable file?
+  const char *FileStart = FileBuffer->getBufferStart();
 
   // We know the file is at least as big as the header, check it now.
   const HMapHeader *Header = reinterpret_cast<const HMapHeader*>(FileStart);
@@ -65,8 +65,21 @@ const HeaderMap *HeaderMap::Create(const FileEntry *FE) {
     NeedsByteSwap = true;  // Mixed endianness headermap.
   else 
     return 0;  // Not a header map.
-  
-  return 0; 
+
+  // Okay, everything looks good, create the header map.
+  HeaderMap *NewHM = new HeaderMap(FileBuffer.get(), NeedsByteSwap);
+  FileBuffer.reset();  // Don't deallocate the buffer on return.
+  return NewHM; 
+}
+
+HeaderMap::~HeaderMap() {
+  delete FileBuffer;
+}
+
+
+/// getFileName - Return the filename of the headermap.
+const char *HeaderMap::getFileName() const {
+  return FileBuffer->getBufferIdentifier();
 }
 
 /// LookupFile - Check to see if the specified relative filename is located in
diff --git a/clang/include/clang/Lex/HeaderMap.h b/clang/include/clang/Lex/HeaderMap.h
index dc70d848e0c..973cf10a861 100644
--- a/clang/include/clang/Lex/HeaderMap.h
+++ b/clang/include/clang/Lex/HeaderMap.h
@@ -14,8 +14,9 @@
 #ifndef LLVM_CLANG_LEX_HEADERMAP_H
 #define LLVM_CLANG_LEX_HEADERMAP_H
 
-#include <string>
-
+namespace llvm {
+  class MemoryBuffer;
+}
 namespace clang {
   class FileEntry;
   class FileManager;
@@ -27,7 +28,16 @@ namespace clang {
 class HeaderMap {
   HeaderMap(const HeaderMap&); // DO NOT IMPLEMENT
   void operator=(const HeaderMap&); // DO NOT IMPLEMENT
+  
+  const llvm::MemoryBuffer *FileBuffer;
+  bool NeedsBSwap;
+  
+  HeaderMap(const llvm::MemoryBuffer *File, bool BSwap)
+    : FileBuffer(File), NeedsBSwap(BSwap) {
+  }
 public:
+  ~HeaderMap();
+  
   /// HeaderMap::Create - This attempts to load the specified file as a header
   /// map.  If it doesn't look like a HeaderMap, it gives up and returns null.
   static const HeaderMap *Create(const FileEntry *FE);
@@ -38,10 +48,7 @@ public:
                               FileManager &FM) const;
   
   /// getFileName - Return the filename of the headermap.
-  const char *getFileName() const {
-    return ""; 
-  }
-    
+  const char *getFileName() const;
 };
 
 } // end namespace clang.