Z3 sources

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

lib/marker.h

@@ -0,0 +1,56 @@
+/*++
+Copyright (c) 2006 Microsoft Corporation
+
+Module Name:
+
+    marker.h
+
+Abstract:
+
+    Auxiliary object for managing markings
+
+Author:
+
+    Leonardo de Moura (leonardo) 2008-02-07.
+
+Revision History:
+
+--*/
+#ifndef _MARKER_H_
+#define _MARKER_H_
+
+#include"vector.h"
+
+/**
+   \brief Keep track of all marked objects. Unmark them when the method
+   unmark or destructor is invoked.
+*/
+template<typename T>
+class marker {
+    ptr_vector<T> m_to_unmark;
+public:
+    ~marker() {
+        unmark();
+    }
+
+    void mark(T * obj) { 
+        obj->set_mark(true);
+        m_to_unmark.push_back(obj);
+    }
+    
+    bool is_marked(T * obj) const {
+        return obj->is_marked();
+    }
+
+    void unmark() {
+        typename ptr_vector<T>::iterator it  = m_to_unmark.begin();
+        typename ptr_vector<T>::iterator end = m_to_unmark.end();
+        for (; it != end; ++it) {
+            T * obj = *it;
+            obj->set_mark(false);
+        }
+        m_to_unmark.reset();
+    }
+};
+
+#endif /* _MARKER_H_ */