Add File::kind's for all subclasses of File.

This is to enable isa<> support for any files which need it.

It will be used in an upcoming patch to differentiate MachOFile from other implicitly generated files.

Reviewed by Lang Hames.

Differential Revision: http://reviews.llvm.org/D16103

llvm-svn: 257830

1 files changed, 8 insertions, 2 deletions

diff --git a/lld/lib/ReaderWriter/MachO/File.h b/lld/lib/ReaderWriter/MachO/File.h
index c97dfa142b8..f283a8f4533 100644
--- a/lld/lib/ReaderWriter/MachO/File.h
+++ b/lld/lib/ReaderWriter/MachO/File.h
@@ -25,9 +25,10 @@ using lld::mach_o::normalized::Section;
 class MachOFile : public SimpleFile {
 public:
   MachOFile(std::unique_ptr<MemoryBuffer> mb, MachOLinkingContext *ctx)
-      : SimpleFile(mb->getBufferIdentifier()), _mb(std::move(mb)), _ctx(ctx) {}
+    : SimpleFile(mb->getBufferIdentifier(), File::kindMachObject),
+      _mb(std::move(mb)), _ctx(ctx) {}
 
-  MachOFile(StringRef path) : SimpleFile(path) {}
+  MachOFile(StringRef path) : SimpleFile(path, File::kindMachObject) {}
 
   void addDefinedAtom(StringRef name, Atom::Scope scope,
                       DefinedAtom::ContentType type, DefinedAtom::Merge merge,
@@ -187,6 +188,11 @@ public:
       visitor(offAndAtom.atom, offAndAtom.offset);
   }
 
+  /// Methods for support type inquiry through isa, cast, and dyn_cast:
+  static inline bool classof(const File *F) {
+    return F->kind() == File::kindMachObject;
+  }
+
 protected:
   std::error_code doParse() override {
     // Convert binary file to normalized mach-o.