Z3 sources

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

lib/smt_formula_compiler.h

@@ -0,0 +1,63 @@
+/*++
+Copyright (c) 2011 Microsoft Corporation
+
+Module Name:
+
+    smt_formula_compiler.h
+
+Abstract:
+
+    Auxiliary class for smt::solver
+    Convert Exprs into Internal data-structures.    
+    
+Author:
+
+    Leonardo de Moura (leonardo) 2011-06-25.
+
+Revision History:
+
+--*/
+#ifndef _SMT_FORMULA_COMPILER_H_
+#define _SMT_FORMULA_COMPILER_H_
+
+#include"smt_solver_types.h"
+#include"assertion_set_rewriter.h"
+#include"elim_term_ite_strategy.h"
+#include"arith_decl_plugin.h"
+#include"assertion_set2sat.h"
+
+namespace smt {
+    
+    class formula_compiler {
+        solver_exp &           s;
+        arith_util             m_a_util;
+        assertion_set_rewriter m_normalizer;
+        elim_term_ite_strategy m_elim_ite;
+        assertion_set2sat      m_to_sat;
+
+        void normalize();
+        void elim_term_ite();
+        void mark_axioms(assertion_set const & s, expr_fast_mark2 & axioms);
+        void unmark_nested_atoms(assertion_set const & s, expr_fast_mark2 & axioms);
+        void assert_axiom(expr * f, bool neg);
+        void register_atom(expr * f, sat::bool_var p);
+        void compile_formulas(assertion_set const & assertions);
+
+    public:
+        formula_compiler(solver_exp & s, params_ref const & p);
+        ~formula_compiler();
+
+        void updt_params(params_ref const & p);
+        static void collect_param_descrs(param_descrs & d);
+        
+        void operator()(); 
+        
+        void set_cancel(bool f);
+
+        void collect_statistics(statistics & st);
+        void reset_statistics();
+    };
+
+};
+
+#endif