1 files changed, 65 insertions, 0 deletions
diff --git a/include/lld/Core/SharedLibraryFile.h b/include/lld/Core/SharedLibraryFile.h
new file mode 100644
index 000000000000..2f84624287d8
--- /dev/null
+++ b/include/lld/Core/SharedLibraryFile.h
@@ -0,0 +1,65 @@
+//===- Core/SharedLibraryFile.h - Models shared libraries as Atoms --------===//
+//
+//                             The LLVM Linker
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLD_CORE_SHARED_LIBRARY_FILE_H
+#define LLD_CORE_SHARED_LIBRARY_FILE_H
+
+#include "lld/Core/File.h"
+
+namespace lld {
+
+///
+/// The SharedLibraryFile subclass of File is used to represent dynamic
+/// shared libraries being linked against.
+///
+class SharedLibraryFile : public File {
+public:
+  static bool classof(const File *f) {
+    return f->kind() == kindSharedLibrary;
+  }
+
+  /// Check if the shared library exports a symbol with the specified name.
+  /// If so, return a SharedLibraryAtom which represents that exported
+  /// symbol.  Otherwise return nullptr.
+  virtual const SharedLibraryAtom *exports(StringRef name,
+                                           bool dataSymbolOnly) const = 0;
+
+  // Returns DSO name. It's the soname (ELF), the install name (MachO) or
+  // the import name (Windows).
+  virtual StringRef getDSOName() const = 0;
+
+  const atom_collection<DefinedAtom> &defined() const override {
+    return _definedAtoms;
+  }
+
+  const atom_collection<UndefinedAtom> &undefined() const override {
+    return _undefinedAtoms;
+  }
+
+  const atom_collection<SharedLibraryAtom> &sharedLibrary() const override {
+    return _sharedLibraryAtoms;
+  }
+
+  const atom_collection<AbsoluteAtom> &absolute() const override {
+    return _absoluteAtoms;
+  }
+
+protected:
+  /// only subclasses of SharedLibraryFile can be instantiated
+  explicit SharedLibraryFile(StringRef path) : File(path, kindSharedLibrary) {}
+
+  atom_collection_vector<DefinedAtom>        _definedAtoms;
+  atom_collection_vector<UndefinedAtom>      _undefinedAtoms;
+  atom_collection_vector<SharedLibraryAtom>  _sharedLibraryAtoms;
+  atom_collection_vector<AbsoluteAtom>       _absoluteAtoms;
+};
+
+} // namespace lld
+
+#endif // LLD_CORE_SHARED_LIBRARY_FILE_H