Import LLVM, at r72732.

1 files changed, 43 insertions, 0 deletions

diff --git a/utils/TableGen/TableGenBackend.h b/utils/TableGen/TableGenBackend.h
new file mode 100644
index 0000000..109bc9f
--- /dev/null
+++ b/utils/TableGen/TableGenBackend.h
@@ -0,0 +1,43 @@
+//===- TableGenBackend.h - Base class for TableGen Backends -----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// The TableGenBackend class is provided as a common interface for all TableGen
+// backends.  It provides useful services and an standardized interface.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TABLEGENBACKEND_H
+#define TABLEGENBACKEND_H
+
+#include <string>
+#include <iosfwd>
+
+namespace llvm {
+
+class Record;
+class RecordKeeper;
+
+struct TableGenBackend {
+  virtual ~TableGenBackend() {}
+
+  // run - All TableGen backends should implement the run method, which should
+  // be the main entry point.
+  virtual void run(std::ostream &OS) = 0;
+
+
+public:   // Useful helper routines...
+  /// EmitSourceFileHeader - Output a LLVM style file header to the specified
+  /// ostream.
+  void EmitSourceFileHeader(const std::string &Desc, std::ostream &OS) const;
+
+};
+
+} // End llvm namespace
+
+#endif