src/mathed/math_atom.C

   1 /*
   2  *  File:        math_inset.C
   3  *  Purpose:     Implementation of insets for mathed
   4  *  Author:      Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
   5  *  Created:     January 1996
   6  *  Description:
   7  *
   8  *  Dependencies: Xlib, XForms
   9  *
  10  *  Copyright: 1996, 1997 Alejandro Aguilar Sierra
  11  *
  12  *   Version: 0.8beta.
  13  *
  14  *   You are free to use and modify this code under the terms of
  15  *   the GNU General Public Licence version 2 or later.
  16  */
  17
  18 #ifdef __GNUG__
  19 #pragma implementation
  20 #endif
  21
  22 #include "math_atom.h"
  23 #include "math_inset.h"
  24 #include "support/LAssert.h"
  25
  26
  27 MathAtom::MathAtom()
  28         : nucleus_(0)
  29 {}
  30
  31
  32 MathAtom::MathAtom(MathInset * p)
  33         : nucleus_(p)
  34 {}
  35
  36
  37 MathAtom::MathAtom(MathAtom const & p)
  38 {
  39         copy(p);
  40 }
  41
  42
  43 void MathAtom::operator=(MathAtom const & p)
  44 {
  45         if (this == &p)
  46                 return;
  47         done();
  48         copy(p);
  49 }
  50
  51
  52 MathAtom::~MathAtom()
  53 {
  54         done();
  55 }
  56
  57
  58 void MathAtom::reset(MathInset * p)
  59 {
  60         done();
  61         nucleus_ = p;
  62 }
  63
  64
  65
  66 void MathAtom::done()
  67 {
  68         delete nucleus_;
  69 }
  70
  71
  72 void MathAtom::copy(MathAtom const & p)
  73 {
  74         //cerr << "calling MathAtom::copy\n";
  75         nucleus_   = p.nucleus_;
  76         if (nucleus_)
  77                 nucleus_ = nucleus_->clone();
  78 }
  79
  80
  81 MathInset * MathAtom::nucleus() const
  82 {
  83         lyx::Assert(nucleus_);
  84         return nucleus_;
  85 }
  86
  87
  88 MathInset * MathAtom::operator->() const
  89 {
  90         return nucleus();
  91 }