Z3 sources

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

lib/normalize_vars.h

@@ -0,0 +1,47 @@
+/*++
+Copyright (c) 2006 Microsoft Corporation
+
+Module Name:
+
+    normalize_vars.h
+
+Abstract:
+
+    <abstract>
+
+Author:
+
+    Leonardo de Moura (leonardo) 2008-02-16.
+
+Revision History:
+
+--*/
+#ifndef _NORMALIZE_VARS_H_
+#define _NORMALIZE_VARS_H_
+
+#include"ast.h"
+#include"obj_hashtable.h"
+
+class normalize_vars {
+    ast_manager &    m_manager;
+    var_ref_vector   m_new_vars;
+    unsigned         m_next_var;
+    ptr_vector<var>  m_map;
+    typedef obj_map<expr, expr *> cache;
+    cache            m_cache;
+    ptr_vector<expr> m_todo;
+    ptr_vector<expr> m_new_children;
+public:
+    normalize_vars(ast_manager & m):
+        m_manager(m),
+        m_new_vars(m) {
+    }
+
+    expr * operator()(expr * n);
+    void reset();
+    unsigned get_num_vars() const { return m_new_vars.size(); }
+    var * const * get_vars() const { return m_new_vars.c_ptr(); }
+};
+
+#endif /* _NORMALIZE_VARS_H_ */
+