Refactored CnfStream to work with the bv theory Bitblaster:

    * separated SatSolverInput interface class into two classes:
           - TheoryProxy for the sat solver to communicate with the theories
           - SatSolverInterface abstract class to communicate with the sat solver
    * instead of using #ifdef typedef for SatClauses and SatLiterals, now there are CVC4 SatLiteral/SatClause types and mappings between them and the internal sat solver clause/literal representation
    * added abstract classes for DPLLSatSolver and BVSatSolver different interfaces 

Replaced TheoryBV with bitblasting implementation:
    * all operators bitblasted
    * only operator elimination rewrite rules so far
  

1 files changed, 48 insertions, 0 deletions

diff --git a/src/prop/registrar.h b/src/prop/registrar.h
new file mode 100644
index 000000000..e1fefc1bd
--- /dev/null
+++ b/src/prop/registrar.h
@@ -0,0 +1,48 @@
+/*********************                                                        */
+/*! \file registrar.h
+ ** \verbatim
+ ** Original author: taking
+ ** Major contributors: mdeters
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 prototype.
+ ** Copyright (c) 2009, 2010, 2011  The Analysis of Computer Systems Group (ACSys)
+ ** Courant Institute of Mathematical Sciences
+ ** New York University
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief Class to encapsulate preregistration duties
+ **
+ ** Class to encapsulate preregistration duties.  This class permits the
+ ** CNF stream implementation to reach into the theory engine to
+ ** preregister only those terms with an associated SAT literal (at the
+ ** point when they get the SAT literal), without having to refer to the
+ ** TheoryEngine class directly.
+ **/
+
+#include "cvc4_private.h"
+
+#ifndef __CVC4__PROP__REGISTRAR_H
+#define __CVC4__PROP__REGISTRAR_H
+
+namespace CVC4 {
+namespace prop {
+
+class Registrar {
+public:
+  virtual void preRegister(Node n) = 0;
+
+};/* class Registrar */
+
+class NullRegistrar: public Registrar {
+public:
+  void preRegister(Node n) {};
+
+};/* class Registrar */
+
+
+
+}/* CVC4::prop namespace */
+}/* CVC4 namespace */
+
+#endif /* __CVC4__PROP__REGISTRAR_H */