checkpoint

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

src/smt/mam.h

@@ -0,0 +1,74 @@
+/*++
+Copyright (c) 2006 Microsoft Corporation
+
+Module Name:
+
+    mam.h
+
+Abstract:
+
+    Matching Abstract Machine
+
+Author:
+
+    Leonardo de Moura (leonardo) 2007-02-13.
+
+Revision History:
+
+--*/
+#ifndef _MAM_H_
+#define _MAM_H_
+
+#include"ast.h"
+#include"smt_types.h"
+
+namespace smt {
+    /**
+       \brief Matching Abstract Machine (MAM)
+    */
+    class mam {
+    protected:
+        context &       m_context;
+        std::ostream *  m_trace_stream;
+    public:
+        mam(context & ctx, std::ostream *trace):
+            m_context(ctx),
+            m_trace_stream(trace) {
+        }
+        
+        virtual ~mam() {
+        }
+        
+        virtual void add_pattern(quantifier * q, app * mp) = 0;
+
+        virtual void push_scope() = 0;
+
+        virtual void pop_scope(unsigned num_scopes) = 0;
+
+        virtual void match() = 0;
+        
+        virtual void rematch(bool use_irrelevant = false) = 0;
+
+        virtual bool has_work() const = 0;
+
+        virtual void relevant_eh(enode * n, bool lazy) = 0;
+        
+        virtual void add_eq_eh(enode * r1, enode * r2) = 0;
+
+        virtual void reset() = 0;
+
+        virtual void display(std::ostream& out) = 0;
+        
+        virtual void on_match(quantifier * q, app * pat, unsigned num_bindings, enode * const * bindings, unsigned max_generation, ptr_vector<enode> & used_enodes) = 0;
+        
+        virtual bool is_shared(enode * n) const = 0;
+
+#ifdef Z3DEBUG
+        virtual bool check_missing_instances() = 0;
+#endif
+    };
+
+    mam * mk_mam(context & ctx, std::ostream *trace);
+};
+
+#endif /* _MAM_H_ */