include/AD/absinterp/absdomain.h

   1 //////////////////////////////////////////////////////////////////////////////
   2 // NOTICE:
   3 //
   4 // ADLib, Prop and their related set of tools and documentation are in the
   5 // public domain.   The author(s) of this software reserve no copyrights on
   6 // the source code and any code generated using the tools.  You are encouraged
   7 // to use ADLib and Prop to develop software, in both academic and commercial
   8 // settings, and are welcomed to incorporate any part of ADLib and Prop into
   9 // your programs.
  10 //
  11 // Although you are under no obligation to do so, we strongly recommend that
  12 // you give away all software developed using our tools.
  13 //
  14 // We also ask that credit be given to us when ADLib and/or Prop are used in
  15 // your programs, and that this notice be preserved intact in all the source
  16 // code.
  17 //
  18 // This software is still under development and we welcome(read crave for)
  19 // any suggestions and help from the users.
  20 //
  21 // Allen Leung (leunga@valis.cs.nyu.edu)
  22 // 1994-1995
  23 //////////////////////////////////////////////////////////////////////////////
  24
  25 #ifndef prop_abstract_domain_h
  26 #define prop_abstract_domain_h
  27
  28 class AbstractDomain {
  29 public:
  30    virtual ~AbstractDomain();
  31
  32    virtual AbstractDomain * top () const = 0;
  33    virtual AbstractDomain * bot () const = 0;
  34    virtual AbstractDomain * meet(const AbstractDomain *) const = 0;
  35    virtual AbstractDomain * join(const AbstractDomain *) const = 0;
  36 };
  37
  38 #endif