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//===--- HeaderMap.h - A file that acts like dir of symlinks ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Chris Lattner and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the HeaderMap interface.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LEX_HEADERMAP_H
#define LLVM_CLANG_LEX_HEADERMAP_H
#include <string>
namespace clang {
class FileEntry;
class FileManager;
/// This class represents an Apple concept known as a 'header map'. To the
/// #include file resolution process, it basically acts like a directory of
/// symlinks to files. Its advantages are that it is dense and more efficient
/// to create and process than a directory of symlinks.
class HeaderMap {
public:
/// 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.
/// If it looks like a HeaderMap but is obviously corrupted, it puts a reason
/// into the string error argument and returns null.
static const HeaderMap *Create(const FileEntry *FE, std::string &ErrorInfo) {
// FIXME: woot!
return 0;
}
/// LookupFile - Check to see if the specified relative filename is located in
/// this HeaderMap. If so, open it and return its FileEntry.
const FileEntry *LookupFile(const char *FilenameStart,const char *FilenameEnd,
FileManager &FM) const {
// FIXME: this needs work.
return 0;
}
};
} // end namespace clang.
#endif
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