X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2FDEVEL%2Fmathml_editor%2Fsrc%2FTCharStream.hh;fp=helm%2FDEVEL%2Fmathml_editor%2Fsrc%2FTCharStream.hh;h=47b01ffe77d79c8774444678d8b36d0dc6608d19;hb=89262281b6e83bd2321150f81f1a0583645eb0c8;hp=0000000000000000000000000000000000000000;hpb=b1fb6b8e1767d775bc452303629e95941d142bea;p=helm.git

diff --git a/helm/DEVEL/mathml_editor/src/TCharStream.hh b/helm/DEVEL/mathml_editor/src/TCharStream.hh
new file mode 100644
index 000000000..47b01ffe7
--- /dev/null
+++ b/helm/DEVEL/mathml_editor/src/TCharStream.hh
@@ -0,0 +1,20 @@
+
+#ifndef __TCharStream_hh__
+#define __TCharStream_hh__
+
+#include "dom.hh"
+
+class TCharStream
+{
+public:
+  TCharStream(void) { };
+  virtual ~TCharStream() { };
+
+  virtual bool  more(void) const = 0;
+  virtual TChar look(void) const = 0;
+  virtual TChar next(void) = 0;
+
+  class EmptyStream { };
+};
+
+#endif // __TCharStream_hh__