1 //===- lld/Core/Writer.h - Abstract File Format Interface -----------------===// 2 // 3 // The LLVM Linker 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef LLD_CORE_WRITER_H 11 #define LLD_CORE_WRITER_H 12 13 #include "lld/Core/LLVM.h" 14 #include "llvm/Support/Error.h" 15 #include <memory> 16 #include <vector> 17 18 namespace lld { 19 class File; 20 class LinkingContext; 21 class MachOLinkingContext; 22 23 /// \brief The Writer is an abstract class for writing object files, shared 24 /// library files, and executable files. Each file format (e.g. mach-o, etc) 25 /// has a concrete subclass of Writer. 26 class Writer { 27 public: 28 virtual ~Writer(); 29 30 /// \brief Write a file from the supplied File object 31 virtual llvm::Error writeFile(const File &linkedFile, StringRef path) = 0; 32 33 /// \brief This method is called by Core Linking to give the Writer a chance 34 /// to add file format specific "files" to set of files to be linked. This is 35 /// how file format specific atoms can be added to the link. 36 virtual void createImplicitFiles(std::vector<std::unique_ptr<File>> &) {} 37 38 protected: 39 // only concrete subclasses can be instantiated 40 Writer(); 41 }; 42 43 std::unique_ptr<Writer> createWriterMachO(const MachOLinkingContext &); 44 std::unique_ptr<Writer> createWriterYAML(const LinkingContext &); 45 } // end namespace lld 46 47 #endif 48
