// 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 -> Start, exp_list, Exp_List {{
    if (is_equal) {
      Start obj = (Start) history.peek();
      Object temp3 = obj.get_exp_list();
      if(temp3==null) { is_equal = false; return; }
      history.push(temp3);
    }
  }}
  after -> Start, exp_list, Exp_List {{
    if (is_equal) history.pop();
  }}

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

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

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

  before -> Compound, op, Op {{
    if (is_equal) {
      Compound obj = (Compound) history.peek();
      Object temp6 = obj.get_op();
      if(temp6==null) { is_equal = false; return; }
      history.push(temp6);
    }
  }}
  after -> Compound, op, Op {{
    if (is_equal) history.pop();
  }}

  before -> Compound, exp_list, Exp_List {{
    if (is_equal) {
      Compound obj = (Compound) history.peek();
      Object temp7 = obj.get_exp_list();
      if(temp7==null) { is_equal = false; return; }
      history.push(temp7);
    }
  }}
  after -> Compound, exp_list, Exp_List {{
    if (is_equal) history.pop();
  }}

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

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

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

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

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

  before UnaryMinus {{
    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 temp8 = host.get_copy();
    Object temp9 = ((CopyVisitor) obj).get_copy();
    if(temp8 == null && temp9 == null) {}
    else if(temp8 == null ||
            temp9 == null ||
            !temp8.equals(temp9)) { 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 -> Exp_List, first, Nonempty_Exp_List {{
    if (is_equal) {
      Exp_List obj = (Exp_List) history.peek();
      Object temp10 = obj.get_first();
      if(temp10==null) { is_equal = false; return; }
      history.push(temp10);
    }
  }}
  after -> Exp_List, first, Nonempty_Exp_List {{
    if (is_equal) history.pop();
  }}

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

  before -> Nonempty_Exp_List, it, Exp {{
    if (is_equal) {
      Nonempty_Exp_List obj = (Nonempty_Exp_List) history.peek();
      Object temp11 = obj.get_it();
      if(temp11==null) { is_equal = false; return; }
      history.push(temp11);
    }
  }}
  after -> Nonempty_Exp_List, it, Exp {{
    if (is_equal) history.pop();
  }}

  before -> Nonempty_Exp_List, next, Nonempty_Exp_List {{
    if (is_equal) {
      Nonempty_Exp_List obj = (Nonempty_Exp_List) history.peek();
      Object temp12 = obj.get_next();
      if(temp12==null) { is_equal = false; return; }
      history.push(temp12);
    }
  }}
  after -> Nonempty_Exp_List, next, Nonempty_Exp_List {{
    if (is_equal) history.pop();
  }}

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

  return boolean {{ is_equal }}
}