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+/*********************                                                        */
+/*! \file modal_exception.h
+ ** \verbatim
+ ** Original author: Morgan Deters
+ ** Major contributors: none
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2014  New York University and The University of Iowa
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief An exception that is thrown when an interactive-only
+ ** feature while CVC4 is being used in a non-interactive setting
+ **
+ ** An exception that is thrown when an interactive-only feature while
+ ** CVC4 is being used in a non-interactive setting (for example, the
+ ** "(get-assertions)" command in an SMT-LIBv2 script).
+ **/
+
+#include "cvc4_public.h"
+
+#ifndef __CVC4__SMT__MODAL_EXCEPTION_H
+#define __CVC4__SMT__MODAL_EXCEPTION_H
+
+#include "base/exception.h"
+
+namespace CVC4 {
+
+class CVC4_PUBLIC ModalException : public CVC4::Exception {
+public:
+  ModalException() :
+    Exception("Feature used while operating in "
+              "incorrect state") {
+  }
+
+  ModalException(const std::string& msg) :
+    Exception(msg) {
+  }
+
+  ModalException(const char* msg) :
+    Exception(msg) {
+  }
+};/* class ModalException */
+
+}/* CVC4 namespace */
+
+#endif /* __CVC4__SMT__MODAL_EXCEPTION_H */