// This file is automatically generated by DemeterJ.

EqualVisitor {
  {{
    private java.util.Stack history = new java.util.Stack();
    public EqualVisitor(Object obj) {
      history.push(obj);
    }
  }}

  before Main {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp1 = host.get_s();
    Object temp2 = ((Main) obj).get_s();
    if(temp1 == null && temp2 == null) {}
    else if(temp1 == null ||
            temp2 == null ||
            !temp1.equals(temp2)) { is_equal = false; return; }
  }}

  before -> Program, e_list, E_List {{
    if (is_equal) {
      Program obj = (Program) history.peek();
      Object temp3 = obj.get_e_list();
      if(temp3==null) { is_equal = false; return; }
      history.push(temp3);
    }
  }}
  after -> Program, e_list, E_List {{
    if (is_equal) history.pop();
  }}

  before Program {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before E {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before S {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before BL {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before T {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before F {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before NL {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp4 = host.get_v();
    Object temp5 = ((NL) obj).get_v();
    if(temp4 == null && temp5 == null) {}
    else if(temp4 == null ||
            temp5 == null ||
            !temp4.equals(temp5)) { is_equal = false; return; }
  }}

  before -> TVar, var, Var {{
    if (is_equal) {
      TVar obj = (TVar) history.peek();
      Object temp6 = obj.get_var();
      if(temp6==null) { is_equal = false; return; }
      history.push(temp6);
    }
  }}
  after -> TVar, var, Var {{
    if (is_equal) history.pop();
  }}

  before -> TVar, vart, VarT {{
    if (is_equal) {
      TVar obj = (TVar) history.peek();
      Object temp7 = obj.get_vart();
      if(temp7==null) { is_equal = false; return; }
      history.push(temp7);
    }
  }}
  after -> TVar, vart, VarT {{
    if (is_equal) history.pop();
  }}

  before TVar {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before Var {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp8 = host.get_v();
    Object temp9 = ((Var) obj).get_v();
    if(temp8 == null && temp9 == null) {}
    else if(temp8 == null ||
            temp9 == null ||
            !temp8.equals(temp9)) { is_equal = false; return; }
  }}

  before VarT {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before Bad {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before BT {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before NT {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before -> C, arg1, E {{
    if (is_equal) {
      C obj = (C) history.peek();
      Object temp10 = obj.get_arg1();
      if(temp10==null) { is_equal = false; return; }
      history.push(temp10);
    }
  }}
  after -> C, arg1, E {{
    if (is_equal) history.pop();
  }}

  before -> C, arg2, E {{
    if (is_equal) {
      C obj = (C) history.peek();
      Object temp11 = obj.get_arg2();
      if(temp11==null) { is_equal = false; return; }
      history.push(temp11);
    }
  }}
  after -> C, arg2, E {{
    if (is_equal) history.pop();
  }}

  before C {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before And {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before Plus {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before TCheck {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before EvalB {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before EvalI {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before PrintVisitor {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    is_equal = is_equal && host.get_indent() == ((PrintVisitor) obj).get_indent();
    is_equal = is_equal && host.get_needSpace() == ((PrintVisitor) obj).get_needSpace();
  }}

  before CopyVisitor {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp12 = host.get_copy();
    Object temp13 = ((CopyVisitor) obj).get_copy();
    if(temp12 == null && temp13 == null) {}
    else if(temp12 == null ||
            temp13 == null ||
            !temp12.equals(temp13)) { is_equal = false; return; }
  }}

  before SubgraphVisitor {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    is_equal = is_equal && host.get_is_equal() == ((SubgraphVisitor) obj).get_is_equal();
  }}

  before EqualVisitor {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    is_equal = is_equal && host.get_is_equal() == ((EqualVisitor) obj).get_is_equal();
  }}

  before DisplayVisitor {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    is_equal = is_equal && host.get_indent() == ((DisplayVisitor) obj).get_indent();
  }}

  before TraceVisitor {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    is_equal = is_equal && host.get_indent() == ((TraceVisitor) obj).get_indent();
  }}

  before UniversalVisitor {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before -> E_List, first, Nonempty_E_List {{
    if (is_equal) {
      E_List obj = (E_List) history.peek();
      Object temp14 = obj.get_first();
      if(temp14==null) { is_equal = false; return; }
      history.push(temp14);
    }
  }}
  after -> E_List, first, Nonempty_E_List {{
    if (is_equal) history.pop();
  }}

  before E_List {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before -> Nonempty_E_List, it, E {{
    if (is_equal) {
      Nonempty_E_List obj = (Nonempty_E_List) history.peek();
      Object temp15 = obj.get_it();
      if(temp15==null) { is_equal = false; return; }
      history.push(temp15);
    }
  }}
  after -> Nonempty_E_List, it, E {{
    if (is_equal) history.pop();
  }}

  before -> Nonempty_E_List, next, Nonempty_E_List {{
    if (is_equal) {
      Nonempty_E_List obj = (Nonempty_E_List) history.peek();
      Object temp16 = obj.get_next();
      if(temp16==null) { is_equal = false; return; }
      history.push(temp16);
    }
  }}
  after -> Nonempty_E_List, next, Nonempty_E_List {{
    if (is_equal) history.pop();
  }}

  before Nonempty_E_List {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  return boolean {{ is_equal }}
}