import edu.neu.ccs.demeter.dj.*;
import java.util.*;
import edu.neu.ccs.demeter.*;
 class EqualVisitor extends UniversalVisitor {
  protected boolean is_equal =  true ;
  public boolean get_is_equal() { return is_equal;   }
  public void set_is_equal(boolean new_is_equal) { is_equal = new_is_equal;   }
  public EqualVisitor() { super();   }
  public EqualVisitor(boolean is_equal) {
    super();
    set_is_equal(is_equal);
    }
  
    private java.util.Stack history = new java.util.Stack();
    public EqualVisitor(Object obj) {
      history.push(obj);
    }
  
  public void before_globalimports(Cd_graph source, GlobalImports dest) {
    if (is_equal) {
      Cd_graph obj = (Cd_graph) history.peek();
      Object temp1 = obj.get_globalimports();
      if(temp1==null) { is_equal = false; return; }
      history.push(temp1);
    }
    }
  public void after_globalimports(Cd_graph source, GlobalImports dest) {
    if (is_equal) history.pop();
    }
  public void before_adj1(Cd_graph source, AdjList dest) {
    if (is_equal) {
      Cd_graph obj = (Cd_graph) history.peek();
      Object temp2 = obj.get_adj1();
      if(temp2==null) { is_equal = false; return; }
      history.push(temp2);
    }
    }
  public void after_adj1(Cd_graph source, AdjList dest) {
    if (is_equal) history.pop();
    }
  public void before_visitor_list(Cd_graph source, VisList dest) {
    if (is_equal) {
      Cd_graph obj = (Cd_graph) history.peek();
      Object temp3 = obj.get_visitor_list();
      if(temp3==null) { is_equal = false; return; }
      history.push(temp3);
    }
    }
  public void after_visitor_list(Cd_graph source, VisList dest) {
    if (is_equal) history.pop();
    }
  public void before_adj2(Cd_graph source, AdjList dest) {
    if (is_equal) {
      Cd_graph obj = (Cd_graph) history.peek();
      Object temp4 = obj.get_adj2();
      if(temp4==null) { is_equal = false; return; }
      history.push(temp4);
    }
    }
  public void after_adj2(Cd_graph source, AdjList dest) {
    if (is_equal) history.pop();
    }
  public void before(Cd_graph host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_adjacency_nlist(AdjList source, Adjacency_Nlist dest) {
    if (is_equal) {
      AdjList obj = (AdjList) history.peek();
      Object temp5 = obj.get_adjacency_nlist();
      if(temp5==null) { is_equal = false; return; }
      history.push(temp5);
    }
    }
  public void after_adjacency_nlist(AdjList source, Adjacency_Nlist dest) {
    if (is_equal) history.pop();
    }
  public void before(AdjList host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_visstart(VisList source, VisStart dest) {
    if (is_equal) {
      VisList obj = (VisList) history.peek();
      Object temp6 = obj.get_visstart();
      if(temp6==null) { is_equal = false; return; }
      history.push(temp6);
    }
    }
  public void after_visstart(VisList source, VisStart dest) {
    if (is_equal) history.pop();
    }
  public void before_adjlist(VisList source, AdjList dest) {
    if (is_equal) {
      VisList obj = (VisList) history.peek();
      Object temp7 = obj.get_adjlist();
      if(temp7==null) { is_equal = false; return; }
      history.push(temp7);
    }
    }
  public void after_adjlist(VisList source, AdjList dest) {
    if (is_equal) history.pop();
    }
  public void before_visend(VisList source, VisEnd dest) {
    if (is_equal) {
      VisList obj = (VisList) history.peek();
      Object temp8 = obj.get_visend();
      if(temp8==null) { is_equal = false; return; }
      history.push(temp8);
    }
    }
  public void after_visend(VisList source, VisEnd dest) {
    if (is_equal) history.pop();
    }
  public void before(VisList host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(VisStart host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(VisEnd host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(VisStart1 host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(VisStart2 host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(VisStart3 host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(VisEnd1 host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(VisEnd2 host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_imports(GlobalImports source, Import_SList dest) {
    if (is_equal) {
      GlobalImports obj = (GlobalImports) history.peek();
      Object temp9 = obj.get_imports();
      if(temp9==null) { is_equal = false; return; }
      history.push(temp9);
    }
    }
  public void after_imports(GlobalImports source, Import_SList dest) {
    if (is_equal) history.pop();
    }
  public void before(GlobalImports host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_packagename(Import source, PackageName dest) {
    if (is_equal) {
      Import obj = (Import) history.peek();
      Object temp10 = obj.get_packagename();
      if(temp10==null) { is_equal = false; return; }
      history.push(temp10);
    }
    }
  public void after_packagename(Import source, PackageName dest) {
    if (is_equal) history.pop();
    }
  public void before_importallclasses(Import source, ImportAllClasses dest) {
    if (is_equal) {
      Import obj = (Import) history.peek();
      Object temp11 = obj.get_importallclasses();
      if(temp11==null) { is_equal = false; return; }
      history.push(temp11);
    }
    }
  public void after_importallclasses(Import source, ImportAllClasses dest) {
    if (is_equal) history.pop();
    }
  public void before(Import host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(ImportAllClasses host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(PackageName source, Nonempty_PackageName dest) {
    if (is_equal) {
      PackageName obj = (PackageName) history.peek();
      Object temp12 = obj.get_first();
      if(temp12==null) { is_equal = false; return; }
      history.push(temp12);
    }
    }
  public void after_first(PackageName source, Nonempty_PackageName dest) {
    if (is_equal) history.pop();
    }
  public void before(PackageName host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_source(Adjacency source, Vertex dest) {
    if (is_equal) {
      Adjacency obj = (Adjacency) history.peek();
      Object temp13 = obj.get_source();
      if(temp13==null) { is_equal = false; return; }
      history.push(temp13);
    }
    }
  public void after_source(Adjacency source, Vertex dest) {
    if (is_equal) history.pop();
    }
  public void before_parameters(Adjacency source, Vertex_Comma_list dest) {
    if (is_equal) {
      Adjacency obj = (Adjacency) history.peek();
      Object temp14 = obj.get_parameters();
      if(temp14==null) { is_equal = false; return; }
      history.push(temp14);
    }
    }
  public void after_parameters(Adjacency source, Vertex_Comma_list dest) {
    if (is_equal) history.pop();
    }
  public void before_ns(Adjacency source, Neighbors dest) {
    if (is_equal) {
      Adjacency obj = (Adjacency) history.peek();
      Object temp15 = obj.get_ns();
      if(temp15==null) { is_equal = false; return; }
      history.push(temp15);
    }
    }
  public void after_ns(Adjacency source, Neighbors dest) {
    if (is_equal) history.pop();
    }
  public void before(Adjacency host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Neighbors host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_construct_ns(Neighbors_wc source, Any_vertex_List dest) {
    if (is_equal) {
      Neighbors_wc obj = (Neighbors_wc) history.peek();
      Object temp16 = obj.get_construct_ns();
      if(temp16==null) { is_equal = false; return; }
      history.push(temp16);
    }
    }
  public void after_construct_ns(Neighbors_wc source, Any_vertex_List dest) {
    if (is_equal) history.pop();
    }
  public void before(Neighbors_wc host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Construct_ns host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_alternat_ns(Alternat_ns source, Term_Bar_list dest) {
    if (is_equal) {
      Alternat_ns obj = (Alternat_ns) history.peek();
      Object temp17 = obj.get_alternat_ns();
      if(temp17==null) { is_equal = false; return; }
      history.push(temp17);
    }
    }
  public void after_alternat_ns(Alternat_ns source, Term_Bar_list dest) {
    if (is_equal) history.pop();
    }
  public void before_commmon(Alternat_ns source, Common dest) {
    if (is_equal) {
      Alternat_ns obj = (Alternat_ns) history.peek();
      Object temp18 = obj.get_commmon();
      if(temp18==null) { is_equal = false; return; }
      history.push(temp18);
    }
    }
  public void after_commmon(Alternat_ns source, Common dest) {
    if (is_equal) history.pop();
    }
  public void before(Alternat_ns host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Common host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Common1 host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Common2 host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_sandwiched(Repetit_n source, Kernel_Sandwich dest) {
    if (is_equal) {
      Repetit_n obj = (Repetit_n) history.peek();
      Object temp19 = obj.get_sandwiched();
      if(temp19==null) { is_equal = false; return; }
      history.push(temp19);
    }
    }
  public void after_sandwiched(Repetit_n source, Kernel_Sandwich dest) {
    if (is_equal) history.pop();
    }
  public void before(Repetit_n host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_nonempty(Kernel source, Term dest) {
    if (is_equal) {
      Kernel obj = (Kernel) history.peek();
      Object temp20 = obj.get_nonempty();
      if(temp20==null) { is_equal = false; return; }
      history.push(temp20);
    }
    }
  public void after_nonempty(Kernel source, Term dest) {
    if (is_equal) history.pop();
    }
  public void before_repeated(Kernel source, Term_Sandwich dest) {
    if (is_equal) {
      Kernel obj = (Kernel) history.peek();
      Object temp21 = obj.get_repeated();
      if(temp21==null) { is_equal = false; return; }
      history.push(temp21);
    }
    }
  public void after_repeated(Kernel source, Term_Sandwich dest) {
    if (is_equal) history.pop();
    }
  public void before(Kernel host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Any_vertex host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Vertex host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp22 = host.get_vertex_name();
    Object temp23 = ((Vertex) obj).get_vertex_name();
    if(temp22 == null && temp23 == null) {}
    else if(temp22 == null ||
            temp23 == null ||
            !temp22.equals(temp23)) { is_equal = false; return; }
    }
  public void before(Syntax_vertex host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Print_command host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Print_indent host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Print_unindent host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Print_skip host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Print_space host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Regular_syntax host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp24 = host.get_string();
    Object temp25 = ((Regular_syntax) obj).get_string();
    if(temp24 == null && temp25 == null) {}
    else if(temp24 == null ||
            temp25 == null ||
            !temp24.equals(temp25)) { is_equal = false; return; }
    }
  public void before_term(Opt_labeled_term source, Term dest) {
    if (is_equal) {
      Opt_labeled_term obj = (Opt_labeled_term) history.peek();
      Object temp26 = obj.get_term();
      if(temp26==null) { is_equal = false; return; }
      history.push(temp26);
    }
    }
  public void after_term(Opt_labeled_term source, Term dest) {
    if (is_equal) history.pop();
    }
  public void before(Opt_labeled_term host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Regular host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Labeled host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp27 = host.get_label_name();
    Object temp28 = ((Labeled) obj).get_label_name();
    if(temp27 == null && temp28 == null) {}
    else if(temp27 == null ||
            temp28 == null ||
            !temp27.equals(temp28)) { is_equal = false; return; }
    }
  public void before_vertex(Term source, Vertex dest) {
    if (is_equal) {
      Term obj = (Term) history.peek();
      Object temp29 = obj.get_vertex();
      if(temp29==null) { is_equal = false; return; }
      history.push(temp29);
    }
    }
  public void after_vertex(Term source, Vertex dest) {
    if (is_equal) history.pop();
    }
  public void before_module_name(Term source, Module_name dest) {
    if (is_equal) {
      Term obj = (Term) history.peek();
      Object temp30 = obj.get_module_name();
      if(temp30==null) { is_equal = false; return; }
      history.push(temp30);
    }
    }
  public void after_module_name(Term source, Module_name dest) {
    if (is_equal) history.pop();
    }
  public void before_actual_parameters(Term source, ParVertex_Comma_list dest) {
    if (is_equal) {
      Term obj = (Term) history.peek();
      Object temp31 = obj.get_actual_parameters();
      if(temp31==null) { is_equal = false; return; }
      history.push(temp31);
    }
    }
  public void after_actual_parameters(Term source, ParVertex_Comma_list dest) {
    if (is_equal) history.pop();
    }
  public void before(Term host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_parvertext(ParVertex source, Vertex dest) {
    if (is_equal) {
      ParVertex obj = (ParVertex) history.peek();
      Object temp32 = obj.get_parvertext();
      if(temp32==null) { is_equal = false; return; }
      history.push(temp32);
    }
    }
  public void after_parvertext(ParVertex source, Vertex dest) {
    if (is_equal) history.pop();
    }
  public void before(ParVertex host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Module_name host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp33 = host.get_module_name();
    Object temp34 = ((Module_name) obj).get_module_name();
    if(temp33 == null && temp34 == null) {}
    else if(temp33 == null ||
            temp34 == null ||
            !temp33.equals(temp34)) { is_equal = false; return; }
    }
  public void before(Normal host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_opt(Optional_term source, Opt_labeled_term_Sandwich dest) {
    if (is_equal) {
      Optional_term obj = (Optional_term) history.peek();
      Object temp35 = obj.get_opt();
      if(temp35==null) { is_equal = false; return; }
      history.push(temp35);
    }
    }
  public void after_opt(Optional_term source, Opt_labeled_term_Sandwich dest) {
    if (is_equal) history.pop();
    }
  public void before(Optional_term host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(ClassName host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp36 = host.get_ident();
    Object temp37 = ((ClassName) obj).get_ident();
    if(temp36 == null && temp37 == null) {}
    else if(temp36 == null ||
            temp37 == null ||
            !temp36.equals(temp37)) { is_equal = false; return; }
    }
  public void before(PartName host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp38 = host.get_ident();
    Object temp39 = ((PartName) obj).get_ident();
    if(temp38 == null && temp39 == null) {}
    else if(temp38 == null ||
            temp39 == null ||
            !temp38.equals(temp39)) { is_equal = false; return; }
    }
  public void before(ClassType host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    is_equal = is_equal && host.get_i() == ((ClassType) obj).get_i();
    }
  public void before_classinfo_list(ClassDefList source, ClassInfo_List dest) {
    if (is_equal) {
      ClassDefList obj = (ClassDefList) history.peek();
      Object temp40 = obj.get_classinfo_list();
      if(temp40==null) { is_equal = false; return; }
      history.push(temp40);
    }
    }
  public void after_classinfo_list(ClassDefList source, ClassInfo_List dest) {
    if (is_equal) history.pop();
    }
  public void before(ClassDefList host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_name(ClassInfo source, ClassName dest) {
    if (is_equal) {
      ClassInfo obj = (ClassInfo) history.peek();
      Object temp41 = obj.get_name();
      if(temp41==null) { is_equal = false; return; }
      history.push(temp41);
    }
    }
  public void after_name(ClassInfo source, ClassName dest) {
    if (is_equal) history.pop();
    }
  public void before_parent(ClassInfo source, ClassInfo dest) {
    if (is_equal) {
      ClassInfo obj = (ClassInfo) history.peek();
      Object temp42 = obj.get_parent();
      if(temp42==null) { is_equal = false; return; }
      history.push(temp42);
    }
    }
  public void after_parent(ClassInfo source, ClassInfo dest) {
    if (is_equal) history.pop();
    }
  public void before_partclass(ClassInfo source, PartInfo_List dest) {
    if (is_equal) {
      ClassInfo obj = (ClassInfo) history.peek();
      Object temp43 = obj.get_partclass();
      if(temp43==null) { is_equal = false; return; }
      history.push(temp43);
    }
    }
  public void after_partclass(ClassInfo source, PartInfo_List dest) {
    if (is_equal) history.pop();
    }
  public void before_subclass(ClassInfo source, ClassInfo_List dest) {
    if (is_equal) {
      ClassInfo obj = (ClassInfo) history.peek();
      Object temp44 = obj.get_subclass();
      if(temp44==null) { is_equal = false; return; }
      history.push(temp44);
    }
    }
  public void after_subclass(ClassInfo source, ClassInfo_List dest) {
    if (is_equal) history.pop();
    }
  public void before_parameter(ClassInfo source, ClassDefList dest) {
    if (is_equal) {
      ClassInfo obj = (ClassInfo) history.peek();
      Object temp45 = obj.get_parameter();
      if(temp45==null) { is_equal = false; return; }
      history.push(temp45);
    }
    }
  public void after_parameter(ClassInfo source, ClassDefList dest) {
    if (is_equal) history.pop();
    }
  public void before(ClassInfo host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_partname(PartInfo source, PartName dest) {
    if (is_equal) {
      PartInfo obj = (PartInfo) history.peek();
      Object temp46 = obj.get_partname();
      if(temp46==null) { is_equal = false; return; }
      history.push(temp46);
    }
    }
  public void after_partname(PartInfo source, PartName dest) {
    if (is_equal) history.pop();
    }
  public void before_classname(PartInfo source, ClassInfo dest) {
    if (is_equal) {
      PartInfo obj = (PartInfo) history.peek();
      Object temp47 = obj.get_classname();
      if(temp47==null) { is_equal = false; return; }
      history.push(temp47);
    }
    }
  public void after_classname(PartInfo source, ClassInfo dest) {
    if (is_equal) history.pop();
    }
  public void before(PartInfo host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(FindCVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(FindAdjVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(FindCCVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(FindUCVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp48 = host.get_name();
    Object temp49 = ((FindUCVisitor) obj).get_name();
    if(temp48 == null && temp49 == null) {}
    else if(temp48 == null ||
            temp49 == null ||
            !temp48.equals(temp49)) { is_equal = false; return; }
    }
  public void before_list(FindPartVisitor source, ClassInfo dest) {
    if (is_equal) {
      FindPartVisitor obj = (FindPartVisitor) history.peek();
      Object temp50 = obj.get_list();
      if(temp50==null) { is_equal = false; return; }
      history.push(temp50);
    }
    }
  public void after_list(FindPartVisitor source, ClassInfo dest) {
    if (is_equal) history.pop();
    }
  public void before(FindPartVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(FindParaVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_list(FindComVisitor source, ClassInfo dest) {
    if (is_equal) {
      FindComVisitor obj = (FindComVisitor) history.peek();
      Object temp51 = obj.get_list();
      if(temp51==null) { is_equal = false; return; }
      history.push(temp51);
    }
    }
  public void after_list(FindComVisitor source, ClassInfo dest) {
    if (is_equal) history.pop();
    }
  public void before(FindComVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(CheckUPartVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_list(FindSubVisitor source, ClassInfo dest) {
    if (is_equal) {
      FindSubVisitor obj = (FindSubVisitor) history.peek();
      Object temp52 = obj.get_list();
      if(temp52==null) { is_equal = false; return; }
      history.push(temp52);
    }
    }
  public void after_list(FindSubVisitor source, ClassInfo dest) {
    if (is_equal) history.pop();
    }
  public void before(FindSubVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(FlattingVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(CheckCircleVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(Main host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before(PrintVisitor host) {
    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();
    }
  public void before(CopyVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp53 = host.get_copy();
    Object temp54 = ((CopyVisitor) obj).get_copy();
    if(temp53 == null && temp54 == null) {}
    else if(temp53 == null ||
            temp54 == null ||
            !temp53.equals(temp54)) { is_equal = false; return; }
    }
  public void before(SubgraphVisitor host) {
    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();
    }
  public void before(EqualVisitor host) {
    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();
    }
  public void before(DisplayVisitor host) {
    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();
    }
  public void before(TraceVisitor host) {
    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();
    }
  public void before(UniversalVisitor host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(Adjacency_Nlist source, Nonempty_Adjacency_Nlist dest) {
    if (is_equal) {
      Adjacency_Nlist obj = (Adjacency_Nlist) history.peek();
      Object temp55 = obj.get_first();
      if(temp55==null) { is_equal = false; return; }
      history.push(temp55);
    }
    }
  public void after_first(Adjacency_Nlist source, Nonempty_Adjacency_Nlist dest) {
    if (is_equal) history.pop();
    }
  public void before(Adjacency_Nlist host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(Import_SList source, Nonempty_Import_SList dest) {
    if (is_equal) {
      Import_SList obj = (Import_SList) history.peek();
      Object temp56 = obj.get_first();
      if(temp56==null) { is_equal = false; return; }
      history.push(temp56);
    }
    }
  public void after_first(Import_SList source, Nonempty_Import_SList dest) {
    if (is_equal) history.pop();
    }
  public void before(Import_SList host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(Vertex_Comma_list source, Nonempty_Vertex_Comma_list dest) {
    if (is_equal) {
      Vertex_Comma_list obj = (Vertex_Comma_list) history.peek();
      Object temp57 = obj.get_first();
      if(temp57==null) { is_equal = false; return; }
      history.push(temp57);
    }
    }
  public void after_first(Vertex_Comma_list source, Nonempty_Vertex_Comma_list dest) {
    if (is_equal) history.pop();
    }
  public void before(Vertex_Comma_list host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(Any_vertex_List source, Nonempty_Any_vertex_List dest) {
    if (is_equal) {
      Any_vertex_List obj = (Any_vertex_List) history.peek();
      Object temp58 = obj.get_first();
      if(temp58==null) { is_equal = false; return; }
      history.push(temp58);
    }
    }
  public void after_first(Any_vertex_List source, Nonempty_Any_vertex_List dest) {
    if (is_equal) history.pop();
    }
  public void before(Any_vertex_List host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(Term_Bar_list source, Nonempty_Term_Bar_list dest) {
    if (is_equal) {
      Term_Bar_list obj = (Term_Bar_list) history.peek();
      Object temp59 = obj.get_first();
      if(temp59==null) { is_equal = false; return; }
      history.push(temp59);
    }
    }
  public void after_first(Term_Bar_list source, Nonempty_Term_Bar_list dest) {
    if (is_equal) history.pop();
    }
  public void before(Term_Bar_list host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(Kernel_Sandwich source, Syntax_vertex_List dest) {
    if (is_equal) {
      Kernel_Sandwich obj = (Kernel_Sandwich) history.peek();
      Object temp60 = obj.get_first();
      if(temp60==null) { is_equal = false; return; }
      history.push(temp60);
    }
    }
  public void after_first(Kernel_Sandwich source, Syntax_vertex_List dest) {
    if (is_equal) history.pop();
    }
  public void before_inner(Kernel_Sandwich source, Kernel dest) {
    if (is_equal) {
      Kernel_Sandwich obj = (Kernel_Sandwich) history.peek();
      Object temp61 = obj.get_inner();
      if(temp61==null) { is_equal = false; return; }
      history.push(temp61);
    }
    }
  public void after_inner(Kernel_Sandwich source, Kernel dest) {
    if (is_equal) history.pop();
    }
  public void before_second(Kernel_Sandwich source, Syntax_vertex_List dest) {
    if (is_equal) {
      Kernel_Sandwich obj = (Kernel_Sandwich) history.peek();
      Object temp62 = obj.get_second();
      if(temp62==null) { is_equal = false; return; }
      history.push(temp62);
    }
    }
  public void after_second(Kernel_Sandwich source, Syntax_vertex_List dest) {
    if (is_equal) history.pop();
    }
  public void before(Kernel_Sandwich host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(Term_Sandwich source, Syntax_vertex_List dest) {
    if (is_equal) {
      Term_Sandwich obj = (Term_Sandwich) history.peek();
      Object temp63 = obj.get_first();
      if(temp63==null) { is_equal = false; return; }
      history.push(temp63);
    }
    }
  public void after_first(Term_Sandwich source, Syntax_vertex_List dest) {
    if (is_equal) history.pop();
    }
  public void before_inner(Term_Sandwich source, Term dest) {
    if (is_equal) {
      Term_Sandwich obj = (Term_Sandwich) history.peek();
      Object temp64 = obj.get_inner();
      if(temp64==null) { is_equal = false; return; }
      history.push(temp64);
    }
    }
  public void after_inner(Term_Sandwich source, Term dest) {
    if (is_equal) history.pop();
    }
  public void before_second(Term_Sandwich source, Syntax_vertex_List dest) {
    if (is_equal) {
      Term_Sandwich obj = (Term_Sandwich) history.peek();
      Object temp65 = obj.get_second();
      if(temp65==null) { is_equal = false; return; }
      history.push(temp65);
    }
    }
  public void after_second(Term_Sandwich source, Syntax_vertex_List dest) {
    if (is_equal) history.pop();
    }
  public void before(Term_Sandwich host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(ParVertex_Comma_list source, Nonempty_ParVertex_Comma_list dest) {
    if (is_equal) {
      ParVertex_Comma_list obj = (ParVertex_Comma_list) history.peek();
      Object temp66 = obj.get_first();
      if(temp66==null) { is_equal = false; return; }
      history.push(temp66);
    }
    }
  public void after_first(ParVertex_Comma_list source, Nonempty_ParVertex_Comma_list dest) {
    if (is_equal) history.pop();
    }
  public void before(ParVertex_Comma_list host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(Opt_labeled_term_Sandwich source, Syntax_vertex_List dest) {
    if (is_equal) {
      Opt_labeled_term_Sandwich obj = (Opt_labeled_term_Sandwich) history.peek();
      Object temp67 = obj.get_first();
      if(temp67==null) { is_equal = false; return; }
      history.push(temp67);
    }
    }
  public void after_first(Opt_labeled_term_Sandwich source, Syntax_vertex_List dest) {
    if (is_equal) history.pop();
    }
  public void before_inner(Opt_labeled_term_Sandwich source, Opt_labeled_term dest) {
    if (is_equal) {
      Opt_labeled_term_Sandwich obj = (Opt_labeled_term_Sandwich) history.peek();
      Object temp68 = obj.get_inner();
      if(temp68==null) { is_equal = false; return; }
      history.push(temp68);
    }
    }
  public void after_inner(Opt_labeled_term_Sandwich source, Opt_labeled_term dest) {
    if (is_equal) history.pop();
    }
  public void before_second(Opt_labeled_term_Sandwich source, Syntax_vertex_List dest) {
    if (is_equal) {
      Opt_labeled_term_Sandwich obj = (Opt_labeled_term_Sandwich) history.peek();
      Object temp69 = obj.get_second();
      if(temp69==null) { is_equal = false; return; }
      history.push(temp69);
    }
    }
  public void after_second(Opt_labeled_term_Sandwich source, Syntax_vertex_List dest) {
    if (is_equal) history.pop();
    }
  public void before(Opt_labeled_term_Sandwich host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(ClassInfo_List source, Nonempty_ClassInfo_List dest) {
    if (is_equal) {
      ClassInfo_List obj = (ClassInfo_List) history.peek();
      Object temp70 = obj.get_first();
      if(temp70==null) { is_equal = false; return; }
      history.push(temp70);
    }
    }
  public void after_first(ClassInfo_List source, Nonempty_ClassInfo_List dest) {
    if (is_equal) history.pop();
    }
  public void before(ClassInfo_List host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(PartInfo_List source, Nonempty_PartInfo_List dest) {
    if (is_equal) {
      PartInfo_List obj = (PartInfo_List) history.peek();
      Object temp71 = obj.get_first();
      if(temp71==null) { is_equal = false; return; }
      history.push(temp71);
    }
    }
  public void after_first(PartInfo_List source, Nonempty_PartInfo_List dest) {
    if (is_equal) history.pop();
    }
  public void before(PartInfo_List host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_first(Syntax_vertex_List source, Nonempty_Syntax_vertex_List dest) {
    if (is_equal) {
      Syntax_vertex_List obj = (Syntax_vertex_List) history.peek();
      Object temp72 = obj.get_first();
      if(temp72==null) { is_equal = false; return; }
      history.push(temp72);
    }
    }
  public void after_first(Syntax_vertex_List source, Nonempty_Syntax_vertex_List dest) {
    if (is_equal) history.pop();
    }
  public void before(Syntax_vertex_List host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_next(Nonempty_PackageName source, Nonempty_PackageName dest) {
    if (is_equal) {
      Nonempty_PackageName obj = (Nonempty_PackageName) history.peek();
      Object temp75 = obj.get_next();
      if(temp75==null) { is_equal = false; return; }
      history.push(temp75);
    }
    }
  public void after_next(Nonempty_PackageName source, Nonempty_PackageName dest) {
    if (is_equal) history.pop();
    }
  public void before(Nonempty_PackageName host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    Object temp73 = host.get_it();
    Object temp74 = ((Nonempty_PackageName) obj).get_it();
    if(temp73 == null && temp74 == null) {}
    else if(temp73 == null ||
            temp74 == null ||
            !temp73.equals(temp74)) { is_equal = false; return; }
    }
  public void before_it(Nonempty_Adjacency_Nlist source, Adjacency dest) {
    if (is_equal) {
      Nonempty_Adjacency_Nlist obj = (Nonempty_Adjacency_Nlist) history.peek();
      Object temp76 = obj.get_it();
      if(temp76==null) { is_equal = false; return; }
      history.push(temp76);
    }
    }
  public void after_it(Nonempty_Adjacency_Nlist source, Adjacency dest) {
    if (is_equal) history.pop();
    }
  public void before_next(Nonempty_Adjacency_Nlist source, Nonempty_Adjacency_Nlist dest) {
    if (is_equal) {
      Nonempty_Adjacency_Nlist obj = (Nonempty_Adjacency_Nlist) history.peek();
      Object temp77 = obj.get_next();
      if(temp77==null) { is_equal = false; return; }
      history.push(temp77);
    }
    }
  public void after_next(Nonempty_Adjacency_Nlist source, Nonempty_Adjacency_Nlist dest) {
    if (is_equal) history.pop();
    }
  public void before(Nonempty_Adjacency_Nlist host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_it(Nonempty_Import_SList source, Import dest) {
    if (is_equal) {
      Nonempty_Import_SList obj = (Nonempty_Import_SList) history.peek();
      Object temp78 = obj.get_it();
      if(temp78==null) { is_equal = false; return; }
      history.push(temp78);
    }
    }
  public void after_it(Nonempty_Import_SList source, Import dest) {
    if (is_equal) history.pop();
    }
  public void before_next(Nonempty_Import_SList source, Nonempty_Import_SList dest) {
    if (is_equal) {
      Nonempty_Import_SList obj = (Nonempty_Import_SList) history.peek();
      Object temp79 = obj.get_next();
      if(temp79==null) { is_equal = false; return; }
      history.push(temp79);
    }
    }
  public void after_next(Nonempty_Import_SList source, Nonempty_Import_SList dest) {
    if (is_equal) history.pop();
    }
  public void before(Nonempty_Import_SList host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_it(Nonempty_Vertex_Comma_list source, Vertex dest) {
    if (is_equal) {
      Nonempty_Vertex_Comma_list obj = (Nonempty_Vertex_Comma_list) history.peek();
      Object temp80 = obj.get_it();
      if(temp80==null) { is_equal = false; return; }
      history.push(temp80);
    }
    }
  public void after_it(Nonempty_Vertex_Comma_list source, Vertex dest) {
    if (is_equal) history.pop();
    }
  public void before_next(Nonempty_Vertex_Comma_list source, Nonempty_Vertex_Comma_list dest) {
    if (is_equal) {
      Nonempty_Vertex_Comma_list obj = (Nonempty_Vertex_Comma_list) history.peek();
      Object temp81 = obj.get_next();
      if(temp81==null) { is_equal = false; return; }
      history.push(temp81);
    }
    }
  public void after_next(Nonempty_Vertex_Comma_list source, Nonempty_Vertex_Comma_list dest) {
    if (is_equal) history.pop();
    }
  public void before(Nonempty_Vertex_Comma_list host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_it(Nonempty_Any_vertex_List source, Any_vertex dest) {
    if (is_equal) {
      Nonempty_Any_vertex_List obj = (Nonempty_Any_vertex_List) history.peek();
      Object temp82 = obj.get_it();
      if(temp82==null) { is_equal = false; return; }
      history.push(temp82);
    }
    }
  public void after_it(Nonempty_Any_vertex_List source, Any_vertex dest) {
    if (is_equal) history.pop();
    }
  public void before_next(Nonempty_Any_vertex_List source, Nonempty_Any_vertex_List dest) {
    if (is_equal) {
      Nonempty_Any_vertex_List obj = (Nonempty_Any_vertex_List) history.peek();
      Object temp83 = obj.get_next();
      if(temp83==null) { is_equal = false; return; }
      history.push(temp83);
    }
    }
  public void after_next(Nonempty_Any_vertex_List source, Nonempty_Any_vertex_List dest) {
    if (is_equal) history.pop();
    }
  public void before(Nonempty_Any_vertex_List host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_it(Nonempty_Term_Bar_list source, Term dest) {
    if (is_equal) {
      Nonempty_Term_Bar_list obj = (Nonempty_Term_Bar_list) history.peek();
      Object temp84 = obj.get_it();
      if(temp84==null) { is_equal = false; return; }
      history.push(temp84);
    }
    }
  public void after_it(Nonempty_Term_Bar_list source, Term dest) {
    if (is_equal) history.pop();
    }
  public void before_next(Nonempty_Term_Bar_list source, Nonempty_Term_Bar_list dest) {
    if (is_equal) {
      Nonempty_Term_Bar_list obj = (Nonempty_Term_Bar_list) history.peek();
      Object temp85 = obj.get_next();
      if(temp85==null) { is_equal = false; return; }
      history.push(temp85);
    }
    }
  public void after_next(Nonempty_Term_Bar_list source, Nonempty_Term_Bar_list dest) {
    if (is_equal) history.pop();
    }
  public void before(Nonempty_Term_Bar_list host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_it(Nonempty_ParVertex_Comma_list source, ParVertex dest) {
    if (is_equal) {
      Nonempty_ParVertex_Comma_list obj = (Nonempty_ParVertex_Comma_list) history.peek();
      Object temp86 = obj.get_it();
      if(temp86==null) { is_equal = false; return; }
      history.push(temp86);
    }
    }
  public void after_it(Nonempty_ParVertex_Comma_list source, ParVertex dest) {
    if (is_equal) history.pop();
    }
  public void before_next(Nonempty_ParVertex_Comma_list source, Nonempty_ParVertex_Comma_list dest) {
    if (is_equal) {
      Nonempty_ParVertex_Comma_list obj = (Nonempty_ParVertex_Comma_list) history.peek();
      Object temp87 = obj.get_next();
      if(temp87==null) { is_equal = false; return; }
      history.push(temp87);
    }
    }
  public void after_next(Nonempty_ParVertex_Comma_list source, Nonempty_ParVertex_Comma_list dest) {
    if (is_equal) history.pop();
    }
  public void before(Nonempty_ParVertex_Comma_list host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_it(Nonempty_ClassInfo_List source, ClassInfo dest) {
    if (is_equal) {
      Nonempty_ClassInfo_List obj = (Nonempty_ClassInfo_List) history.peek();
      Object temp88 = obj.get_it();
      if(temp88==null) { is_equal = false; return; }
      history.push(temp88);
    }
    }
  public void after_it(Nonempty_ClassInfo_List source, ClassInfo dest) {
    if (is_equal) history.pop();
    }
  public void before_next(Nonempty_ClassInfo_List source, Nonempty_ClassInfo_List dest) {
    if (is_equal) {
      Nonempty_ClassInfo_List obj = (Nonempty_ClassInfo_List) history.peek();
      Object temp89 = obj.get_next();
      if(temp89==null) { is_equal = false; return; }
      history.push(temp89);
    }
    }
  public void after_next(Nonempty_ClassInfo_List source, Nonempty_ClassInfo_List dest) {
    if (is_equal) history.pop();
    }
  public void before(Nonempty_ClassInfo_List host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_it(Nonempty_PartInfo_List source, PartInfo dest) {
    if (is_equal) {
      Nonempty_PartInfo_List obj = (Nonempty_PartInfo_List) history.peek();
      Object temp90 = obj.get_it();
      if(temp90==null) { is_equal = false; return; }
      history.push(temp90);
    }
    }
  public void after_it(Nonempty_PartInfo_List source, PartInfo dest) {
    if (is_equal) history.pop();
    }
  public void before_next(Nonempty_PartInfo_List source, Nonempty_PartInfo_List dest) {
    if (is_equal) {
      Nonempty_PartInfo_List obj = (Nonempty_PartInfo_List) history.peek();
      Object temp91 = obj.get_next();
      if(temp91==null) { is_equal = false; return; }
      history.push(temp91);
    }
    }
  public void after_next(Nonempty_PartInfo_List source, Nonempty_PartInfo_List dest) {
    if (is_equal) history.pop();
    }
  public void before(Nonempty_PartInfo_List host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
  public void before_it(Nonempty_Syntax_vertex_List source, Syntax_vertex dest) {
    if (is_equal) {
      Nonempty_Syntax_vertex_List obj = (Nonempty_Syntax_vertex_List) history.peek();
      Object temp92 = obj.get_it();
      if(temp92==null) { is_equal = false; return; }
      history.push(temp92);
    }
    }
  public void after_it(Nonempty_Syntax_vertex_List source, Syntax_vertex dest) {
    if (is_equal) history.pop();
    }
  public void before_next(Nonempty_Syntax_vertex_List source, Nonempty_Syntax_vertex_List dest) {
    if (is_equal) {
      Nonempty_Syntax_vertex_List obj = (Nonempty_Syntax_vertex_List) history.peek();
      Object temp93 = obj.get_next();
      if(temp93==null) { is_equal = false; return; }
      history.push(temp93);
    }
    }
  public void after_next(Nonempty_Syntax_vertex_List source, Nonempty_Syntax_vertex_List dest) {
    if (is_equal) history.pop();
    }
  public void before(Nonempty_Syntax_vertex_List host) {
    Object obj = history.peek();
    is_equal = is_equal && obj.getClass().equals(host.getClass());
    if(!is_equal) return;
    }
   boolean get_return_val() { return is_equal ;   }
    void universal_trv0_bef(UniversalVisitor _v_) {
    super.universal_trv0_bef(_v_);
  }

    void universal_trv0_aft(UniversalVisitor _v_) {
    super.universal_trv0_aft(_v_);
  }

    void universal_trv0(UniversalVisitor _v_) {
    universal_trv0_bef(_v_);
    super.universal_trv0(_v_);
    universal_trv0_aft(_v_);
  }

}