Imported Upstream version 3.3.0.2upstream/3.3.0.2

1 files changed, 61 insertions, 0 deletions

diff --git a/libbackend-elements/backend-elements/indentation/buffer.hxx b/libbackend-elements/backend-elements/indentation/buffer.hxx
new file mode 100644
index 0000000..7058814
--- /dev/null
+++ b/libbackend-elements/backend-elements/indentation/buffer.hxx
@@ -0,0 +1,61 @@
+// file      : backend-elements/indentation/buffer.hxx
+// author    : Boris Kolpackov <boris@kolpackov.net>
+// copyright : Copyright (c) 2005-2010 Boris Kolpackov
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef BACKEND_ELEMENTS_INDENTATION_BUFFER_HXX
+#define BACKEND_ELEMENTS_INDENTATION_BUFFER_HXX
+
+#include <backend-elements/types.hxx>
+
+#include <string>
+
+namespace BackendElements
+{
+  namespace Indentation
+  {
+    template <typename C>
+    class Buffer: public NonCopyable
+    {
+    public:
+      struct Write {};
+
+    public:
+      virtual
+      ~Buffer ()
+      {
+      }
+
+    public:
+      typedef
+      std::char_traits<C>
+      Traits;
+
+      typedef
+      typename Traits::char_type
+      AsChar;
+
+      typedef
+      typename Traits::int_type
+      AsInt;
+
+    public:
+      virtual AsInt
+      put (AsChar c) = 0;
+
+      // Unbuffer flushes internal formatting buffers (if any).
+      // Note that unbuffer is not exactly flushing since it can
+      // result in formatting errors and in general can not be
+      // called at arbitrary points. Natural use case would be
+      // to call unbuffer at the end of the stream when no more
+      // data is expected.
+      //
+      virtual Void
+      unbuffer () = 0;
+    };
+  }
+}
+
+#include <backend-elements/indentation/buffer.txx>
+
+#endif  // BACKEND_ELEMENTS_INDENTATION_BUFFER_HXX