// This file is automatically generated by DemeterJ.

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

  before -> Program, exps, Expression_List {{
    if (is_equal) {
      Program obj = (Program) history.peek();
      Object temp1 = obj.get_exps();
      if(temp1==null) { is_equal = false; return; }
      history.push(temp1);
    }
  }}
  after -> Program, exps, Expression_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 Expression {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
  }}

  before -> LetExp, assignment, Literal {{
    if (is_equal) {
      LetExp obj = (LetExp) history.peek();
      Object temp2 = obj.get_assignment();
      if(temp2==null) { is_equal = false; return; }
      history.push(temp2);
    }
  }}
  after -> LetExp, assignment, Literal {{
    if (is_equal) history.pop();
  }}

  before -> LetExp, body, Expression {{
    if (is_equal) {
      LetExp obj = (LetExp) history.peek();
      Object temp3 = obj.get_body();
      if(temp3==null) { is_equal = false; return; }
      history.push(temp3);
    }
  }}
  after -> LetExp, body, Expression {{
    if (is_equal) history.pop();
  }}

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

  before -> CNF, cnftype, CNFType {{
    if (is_equal) {
      CNF obj = (CNF) history.peek();
      Object temp4 = obj.get_cnftype();
      if(temp4==null) { is_equal = false; return; }
      history.push(temp4);
    }
  }}
  after -> CNF, cnftype, CNFType {{
    if (is_equal) history.pop();
  }}

  before -> CNF, clauses, Clause_List {{
    if (is_equal) {
      CNF obj = (CNF) history.peek();
      Object temp5 = obj.get_clauses();
      if(temp5==null) { is_equal = false; return; }
      history.push(temp5);
    }
  }}
  after -> CNF, clauses, Clause_List {{
    if (is_equal) history.pop();
  }}

  before -> CNF, sat, ClauseCount {{
    if (is_equal) {
      CNF obj = (CNF) history.peek();
      Object temp6 = obj.get_sat();
      if(temp6==null) { is_equal = false; return; }
      history.push(temp6);
    }
  }}
  after -> CNF, sat, ClauseCount {{
    if (is_equal) history.pop();
  }}

  before -> CNF, unsat, ClauseCount {{
    if (is_equal) {
      CNF obj = (CNF) history.peek();
      Object temp7 = obj.get_unsat();
      if(temp7==null) { is_equal = false; return; }
      history.push(temp7);
    }
  }}
  after -> CNF, unsat, ClauseCount {{
    if (is_equal) history.pop();
  }}

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

  before -> CNFType, clausetype_list, ClauseType_List {{
    if (is_equal) {
      CNFType obj = (CNFType) history.peek();
      Object temp8 = obj.get_clausetype_list();
      if(temp8==null) { is_equal = false; return; }
      history.push(temp8);
    }
  }}
  after -> CNFType, clausetype_list, ClauseType_List {{
    if (is_equal) history.pop();
  }}

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

  before -> ClauseType, length, ClauseLength {{
    if (is_equal) {
      ClauseType obj = (ClauseType) history.peek();
      Object temp9 = obj.get_length();
      if(temp9==null) { is_equal = false; return; }
      history.push(temp9);
    }
  }}
  after -> ClauseType, length, ClauseLength {{
    if (is_equal) history.pop();
  }}

  before -> ClauseType, pos, ClauseLength {{
    if (is_equal) {
      ClauseType obj = (ClauseType) history.peek();
      Object temp10 = obj.get_pos();
      if(temp10==null) { is_equal = false; return; }
      history.push(temp10);
    }
  }}
  after -> ClauseType, pos, ClauseLength {{
    if (is_equal) history.pop();
  }}

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

  before -> Clause, weight, Weight {{
    if (is_equal) {
      Clause obj = (Clause) history.peek();
      Object temp11 = obj.get_weight();
      if(temp11==null) { is_equal = false; return; }
      history.push(temp11);
    }
  }}
  after -> Clause, weight, Weight {{
    if (is_equal) history.pop();
  }}

  before -> Clause, literals, Literals {{
    if (is_equal) {
      Clause obj = (Clause) history.peek();
      Object temp12 = obj.get_literals();
      if(temp12==null) { is_equal = false; return; }
      history.push(temp12);
    }
  }}
  after -> Clause, literals, Literals {{
    if (is_equal) history.pop();
  }}

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

  before -> Literals, literals, Literal_List {{
    if (is_equal) {
      Literals obj = (Literals) history.peek();
      Object temp13 = obj.get_literals();
      if(temp13==null) { is_equal = false; return; }
      history.push(temp13);
    }
  }}
  after -> Literals, literals, Literal_List {{
    if (is_equal) history.pop();
  }}

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

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

  before -> Pos, variable, Variable {{
    if (is_equal) {
      Pos obj = (Pos) history.peek();
      Object temp14 = obj.get_variable();
      if(temp14==null) { is_equal = false; return; }
      history.push(temp14);
    }
  }}
  after -> Pos, variable, Variable {{
    if (is_equal) history.pop();
  }}

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

  before -> Neg, variable, Variable {{
    if (is_equal) {
      Neg obj = (Neg) history.peek();
      Object temp15 = obj.get_variable();
      if(temp15==null) { is_equal = false; return; }
      history.push(temp15);
    }
  }}
  after -> Neg, variable, Variable {{
    if (is_equal) history.pop();
  }}

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

  before Variable {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp16 = host.get_v();
    Object temp17 = ((Variable) obj).get_v();
    if(temp16 == null && temp17 == null) {}
    else if(temp16 == null ||
            temp17 == null ||
            !temp16.equals(temp17)) { is_equal = false; return; }
  }}

  before Weight {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp18 = host.get_v();
    Object temp19 = ((Weight) obj).get_v();
    if(temp18 == null && temp19 == null) {}
    else if(temp18 == null ||
            temp19 == null ||
            !temp18.equals(temp19)) { is_equal = false; return; }
  }}

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

  before ClauseLength {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp20 = host.get_v();
    Object temp21 = ((ClauseLength) obj).get_v();
    if(temp20 == null && temp21 == null) {}
    else if(temp20 == null ||
            temp21 == null ||
            !temp20.equals(temp21)) { is_equal = false; return; }
  }}

  before Main {{
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp22 = host.get_s();
    Object temp23 = ((Main) obj).get_s();
    if(temp22 == null && temp23 == null) {}
    else if(temp22 == null ||
            temp23 == null ||
            !temp22.equals(temp23)) { is_equal = false; 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 temp24 = host.get_copy();
    Object temp25 = ((CopyVisitor) obj).get_copy();
    if(temp24 == null && temp25 == null) {}
    else if(temp24 == null ||
            temp25 == null ||
            !temp24.equals(temp25)) { 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 -> Expression_List, first, Nonempty_Expression_List {{
    if (is_equal) {
      Expression_List obj = (Expression_List) history.peek();
      Object temp26 = obj.get_first();
      if(temp26==null) { is_equal = false; return; }
      history.push(temp26);
    }
  }}
  after -> Expression_List, first, Nonempty_Expression_List {{
    if (is_equal) history.pop();
  }}

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

  before -> Clause_List, first, Nonempty_Clause_List {{
    if (is_equal) {
      Clause_List obj = (Clause_List) history.peek();
      Object temp27 = obj.get_first();
      if(temp27==null) { is_equal = false; return; }
      history.push(temp27);
    }
  }}
  after -> Clause_List, first, Nonempty_Clause_List {{
    if (is_equal) history.pop();
  }}

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

  before -> ClauseType_List, first, Nonempty_ClauseType_List {{
    if (is_equal) {
      ClauseType_List obj = (ClauseType_List) history.peek();
      Object temp28 = obj.get_first();
      if(temp28==null) { is_equal = false; return; }
      history.push(temp28);
    }
  }}
  after -> ClauseType_List, first, Nonempty_ClauseType_List {{
    if (is_equal) history.pop();
  }}

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

  before -> Literal_List, first, Nonempty_Literal_List {{
    if (is_equal) {
      Literal_List obj = (Literal_List) history.peek();
      Object temp29 = obj.get_first();
      if(temp29==null) { is_equal = false; return; }
      history.push(temp29);
    }
  }}
  after -> Literal_List, first, Nonempty_Literal_List {{
    if (is_equal) history.pop();
  }}

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

  before -> Nonempty_Expression_List, it, Expression {{
    if (is_equal) {
      Nonempty_Expression_List obj = (Nonempty_Expression_List) history.peek();
      Object temp30 = obj.get_it();
      if(temp30==null) { is_equal = false; return; }
      history.push(temp30);
    }
  }}
  after -> Nonempty_Expression_List, it, Expression {{
    if (is_equal) history.pop();
  }}

  before -> Nonempty_Expression_List, next, Nonempty_Expression_List {{
    if (is_equal) {
      Nonempty_Expression_List obj = (Nonempty_Expression_List) history.peek();
      Object temp31 = obj.get_next();
      if(temp31==null) { is_equal = false; return; }
      history.push(temp31);
    }
  }}
  after -> Nonempty_Expression_List, next, Nonempty_Expression_List {{
    if (is_equal) history.pop();
  }}

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

  before -> Nonempty_Clause_List, it, Clause {{
    if (is_equal) {
      Nonempty_Clause_List obj = (Nonempty_Clause_List) history.peek();
      Object temp32 = obj.get_it();
      if(temp32==null) { is_equal = false; return; }
      history.push(temp32);
    }
  }}
  after -> Nonempty_Clause_List, it, Clause {{
    if (is_equal) history.pop();
  }}

  before -> Nonempty_Clause_List, next, Nonempty_Clause_List {{
    if (is_equal) {
      Nonempty_Clause_List obj = (Nonempty_Clause_List) history.peek();
      Object temp33 = obj.get_next();
      if(temp33==null) { is_equal = false; return; }
      history.push(temp33);
    }
  }}
  after -> Nonempty_Clause_List, next, Nonempty_Clause_List {{
    if (is_equal) history.pop();
  }}

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

  before -> Nonempty_ClauseType_List, it, ClauseType {{
    if (is_equal) {
      Nonempty_ClauseType_List obj = (Nonempty_ClauseType_List) history.peek();
      Object temp34 = obj.get_it();
      if(temp34==null) { is_equal = false; return; }
      history.push(temp34);
    }
  }}
  after -> Nonempty_ClauseType_List, it, ClauseType {{
    if (is_equal) history.pop();
  }}

  before -> Nonempty_ClauseType_List, next, Nonempty_ClauseType_List {{
    if (is_equal) {
      Nonempty_ClauseType_List obj = (Nonempty_ClauseType_List) history.peek();
      Object temp35 = obj.get_next();
      if(temp35==null) { is_equal = false; return; }
      history.push(temp35);
    }
  }}
  after -> Nonempty_ClauseType_List, next, Nonempty_ClauseType_List {{
    if (is_equal) history.pop();
  }}

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

  before -> Nonempty_Literal_List, it, Literal {{
    if (is_equal) {
      Nonempty_Literal_List obj = (Nonempty_Literal_List) history.peek();
      Object temp36 = obj.get_it();
      if(temp36==null) { is_equal = false; return; }
      history.push(temp36);
    }
  }}
  after -> Nonempty_Literal_List, it, Literal {{
    if (is_equal) history.pop();
  }}

  before -> Nonempty_Literal_List, next, Nonempty_Literal_List {{
    if (is_equal) {
      Nonempty_Literal_List obj = (Nonempty_Literal_List) history.peek();
      Object temp37 = obj.get_next();
      if(temp37==null) { is_equal = false; return; }
      history.push(temp37);
    }
  }}
  after -> Nonempty_Literal_List, next, Nonempty_Literal_List {{
    if (is_equal) history.pop();
  }}

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

  return boolean {{ is_equal }}
}