1 files changed, 78 insertions, 0 deletions
diff --git a/src/util/abstract_value.h b/src/util/abstract_value.h
new file mode 100644
index 000000000..1fc2f42e1
--- /dev/null
+++ b/src/util/abstract_value.h
@@ -0,0 +1,78 @@
+/*********************                                                        */
+/*! \file abstract_value.h
+ ** \verbatim
+ ** Original author: mdeters
+ ** Major contributors: none
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 prototype.
+ ** Copyright (c) 2009-2012  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 Representation of abstract values
+ **
+ ** Representation of abstract values.
+ **/
+
+#include "cvc4_public.h"
+
+#pragma once
+
+#include "expr/type.h"
+#include <iostream>
+
+namespace CVC4 {
+
+class CVC4_PUBLIC AbstractValue {
+  const Integer d_index;
+
+public:
+
+  AbstractValue(Integer index) throw(IllegalArgumentException) :
+    d_index(index) {
+    CheckArgument(index >= 1, index, "index >= 1 required for abstract value, not `%s'", index.toString().c_str());
+  }
+
+  ~AbstractValue() throw() {
+  }
+
+  const Integer& getIndex() const throw() {
+    return d_index;
+  }
+
+  bool operator==(const AbstractValue& val) const throw() {
+    return d_index == val.d_index;
+  }
+  bool operator!=(const AbstractValue& val) const throw() {
+    return !(*this == val);
+  }
+
+  bool operator<(const AbstractValue& val) const throw() {
+    return d_index < val.d_index;
+  }
+  bool operator<=(const AbstractValue& val) const throw() {
+    return d_index <= val.d_index;
+  }
+  bool operator>(const AbstractValue& val) const throw() {
+    return !(*this <= val);
+  }
+  bool operator>=(const AbstractValue& val) const throw() {
+    return !(*this < val);
+  }
+
+};/* class AbstractValue */
+
+std::ostream& operator<<(std::ostream& out, const AbstractValue& val) CVC4_PUBLIC;
+
+/**
+ * Hash function for the BitVector constants.
+ */
+struct CVC4_PUBLIC AbstractValueHashFunction {
+  inline size_t operator()(const AbstractValue& val) const {
+    return IntegerHashFunction()(val.getIndex());
+  }
+};/* struct AbstractValueHashFunction */
+
+}/* CVC4 namespace */