LispFixnum.h

   1
   2 #ifndef LISP_FIXNUM_H_INCLUDED
   3 #define LISP_FIXNUM_H_INCLUDED
   4
   5 namespace Lisp
   6 {
   7
   8         class Fixnum;
   9
  10         class Fixnum : public Obj
  11         {
  12         public:
  13
  14                 typedef Fixnum* FixnumPtr;
  15                 typedef Fixnum& FixnumRef;
  16
  17                 Fixnum() : value_(0)
  18                 {};
  19
  20                 Fixnum(const Fixnum& other)
  21                 {
  22                         if (this != &other)
  23                                 value_ = other.value_;
  24                 };
  25
  26                 virtual eObjectType getObjectType() const
  27                 {
  28                         return eFixnumObj;
  29                 }
  30
  31                 virtual Fixnum* create(void) const
  32                 {
  33                         FixnumPtr result = new Fixnum();
  34                         return result;
  35                 }
  36
  37                 virtual Fixnum* clone() const
  38                 {
  39                         FixnumPtr result = new Fixnum(*this);
  40                         return result;
  41                 }
  42
  43                 void print(std::ostream& out) const
  44                 {
  45                         out << value_;
  46                 }
  47
  48 //                      bool identify(std::string in) const
  49 //                      {
  50 //                              in >> value_;
  51 //                      }
  52
  53                 bool operator==(const Obj* other)
  54                 {
  55                         bool result = false;
  56                         if (other->getObjectType() == eFixnumObj)
  57                                 result = ( value_ == dynamic_cast<const Fixnum*>(other)->value_ );
  58                         return result;
  59                 }
  60         private:
  61                 FixnumValue value_;
  62
  63         };
  64
  65 }
  66
  67 #endif