Z3 sources

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

lib/cancel_eh.h

@@ -0,0 +1,37 @@
+/*++
+Copyright (c) 2011 Microsoft Corporation
+
+Module Name:
+
+    cancel_eh.h
+
+Abstract:
+
+    Template for implementing simple event handler that just invokes cancel method.
+
+Author:
+
+    Leonardo de Moura (leonardo) 2011-04-27.
+
+Revision History:
+
+--*/
+#ifndef _CANCEL_EH_H_
+#define _CANCEL_EH_H_
+
+#include"event_handler.h"
+
+/**
+   \brief Generic event handler for invoking cancel method.
+*/
+template<typename T>
+class cancel_eh : public event_handler {
+    T & m_obj;
+public:
+    cancel_eh(T & o):m_obj(o) {}
+    virtual void operator()() { 
+        m_obj.cancel(); 
+    }
+};
+
+#endif