flower/cursor.cc

   1 // cursor.cc
   2 #ifndef CURSOR_CC
   3 #define CURSOR_CC
   4
   5 #include "cursor.hh"
   6 //#define inline
   7 //#include "cursor.inl"
   8 #include <assert.h>
   9
  10 template<class T>
  11 Cursor<T>
  12 Cursor<T>::operator ++( int )
  13 {
  14     Cursor<T> r = *this;
  15     assert( pointer_ );
  16     pointer_ = pointer_->next();
  17     return r;
  18 }
  19 template<class T>
  20 Cursor<T>
  21 Cursor<T>::operator -=( int j )
  22 {
  23     while (j--)
  24         (*this)--;
  25     return *this;
  26 }
  27 template<class T>
  28 Cursor<T>
  29 Cursor<T>::operator +=( int j )
  30 {
  31     while (j++)
  32         (*this)++;
  33     return *this;
  34 }
  35
  36 template<class T>
  37 Cursor<T>
  38 Cursor<T>::operator --( int )
  39 {
  40     Cursor<T> r = *this;
  41     assert( pointer_ );
  42     pointer_ = pointer_->previous();
  43     return r;
  44 }
  45
  46 template<class T>
  47 Cursor<T>
  48 Cursor<T>::operator +( int i ) const
  49 {
  50     Cursor<T> r = *this;
  51
  52     if (i<0)
  53         return r -(-i);
  54
  55     while (i--)
  56         r++;
  57
  58     return r;
  59 }
  60
  61 template<class T>
  62 Cursor<T>
  63 Cursor<T>::operator -( int i ) const
  64 {
  65     Cursor<T> r = *this;
  66     if (i<0)
  67         return r +(-i);
  68
  69     while (i--)
  70         r--;
  71
  72     return r;
  73 }
  74
  75 #endif