--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/interps/rail/src/lib.h	Sun Dec 09 19:30:08 2012 +0000
@@ -0,0 +1,64 @@
+// lib.h
+
+#ifndef LIB_H_RAIL_1
+#define LIB_H_RAIL_1
+
+#include <vector>
+#include <list>
+#include <string>
+#include <map>
+#include <sstream>
+#include <iostream>
+#include <fstream>
+
+class InternalException : public std::exception
+{
+public:
+  explicit InternalException(std::string const & newLabel)
+    : label(newLabel)
+  {
+  }
+
+  virtual ~InternalException() throw() {}
+
+  virtual char const * what() const throw()
+  {
+    return label.c_str();
+  }
+private:
+  std::string label;
+};
+
+class ArgumentException : public std::exception
+{
+public:
+  explicit ArgumentException(std::string const & newLabel)
+    : label(newLabel)
+  {
+  }
+
+  virtual ~ArgumentException() throw() {}
+
+  virtual char const * what() const throw()
+  {
+    return label.c_str();
+  }
+private:
+  std::string label;
+};
+
+std::string intToString(int num);
+
+class Binding;
+
+extern Binding NIL;
+
+namespace args
+{
+  extern bool isBatch;
+  extern std::ostream * output;
+  extern std::istream * input;
+  extern std::list<std::string> sourceFiles;
+}
+
+#endif