core:
import edu.neu.ccs.demeter.dj.*;
import java.util.*;
import java.lang.reflect.*;

import edu.neu.ccs.demeter.*;
add: class DisplayVisitor extends UniversalVisitor {
  protected int indent;
  public int get_indent() {{ return indent; }}
  public void set_indent(int new_indent)
    {{ indent = new_indent; }}
  public constructor DisplayVisitor() {{ super(); }}
  public constructor DisplayVisitor(int indent) {{
    super();
    set_indent(indent);
  }}
{{
    protected java.io.PrintWriter out = new java.io.PrintWriter(System.out, true);
    java.io.PrintWriter get_out()             { return out; }
    void set_out(java.io.PrintWriter new_out) { out = new_out; }
    DisplayVisitor(java.io.PrintWriter out)     { set_out(out); }
    DisplayVisitor(java.io.PrintStream out)
      { set_out(new java.io.PrintWriter(out, true)); }
  }}
  public void finish() {{ out.flush(); }}
  public void before(Main host) {{
    out.print(": Main  (");
    indent++;
  }}
  public void after(Main host) {{
    out.print(" )");
    indent--;
  }}
  public void before(Schema host) {{
    out.print(": Schema  (");
    indent++;
  }}
  public void after(Schema host) {{
    out.print(" )");
    indent--;
  }}
  public void before_string(Schema source, String dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<string> ");
    out.print(" : String");
    out.print(" \"" + source.get_string() + "\" ");
  }}
  public void before_parts_list(Schema source, Parts_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<parts_list> ");
  }}
  public void before(ComplexType host) {{
    out.print(": ComplexType  (");
    indent++;
  }}
  public void after(ComplexType host) {{
    out.print(" )");
    indent--;
  }}
  public void before_name(ComplexType source, Name dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<name> ");
  }}
  public void before_sequence(ComplexType source, Sequence dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<sequence> ");
  }}
  public void before_attribute(ComplexType source, Attribute dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<attribute> ");
  }}
  public void before(Attribute host) {{
    out.print(": Attribute  (");
    indent++;
  }}
  public void after(Attribute host) {{
    out.print(" )");
    indent--;
  }}
  public void before_name(Attribute source, Name dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<name> ");
  }}
  public void before_type(Attribute source, Type dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<type> ");
  }}
  public void before_endpart(Attribute source, EndPart dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<endpart> ");
  }}
  public void before(Sequence host) {{
    out.print(": Sequence  (");
    indent++;
  }}
  public void after(Sequence host) {{
    out.print(" )");
    indent--;
  }}
  public void before_parts_list(Sequence source, Parts_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<parts_list> ");
  }}
  public void before(Element host) {{
    out.print(": Element  (");
    indent++;
  }}
  public void after(Element host) {{
    out.print(" )");
    indent--;
  }}
  public void before_nameref(Element source, NameRef dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<nameref> ");
  }}
  public void before_elementparts_list(Element source, ElementParts_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<elementparts_list> ");
  }}
  public void before_elementendparts(Element source, ElementEndParts dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<elementendparts> ");
  }}
  public void before(SimpleElementEnd host) {{
    out.print(": SimpleElementEnd  (");
    indent++;
  }}
  public void after(SimpleElementEnd host) {{
    out.print(" )");
    indent--;
  }}
  public void before_endpart(SimpleElementEnd source, EndPart dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<endpart> ");
  }}
  public void before(ComplexElementEnd host) {{
    out.print(": ComplexElementEnd  (");
    indent++;
  }}
  public void after(ComplexElementEnd host) {{
    out.print(" )");
    indent--;
  }}
  public void before_types_list(ComplexElementEnd source, Types_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<types_list> ");
  }}
  public void before(SimpleType host) {{
    out.print(": SimpleType  (");
    indent++;
  }}
  public void after(SimpleType host) {{
    out.print(" )");
    indent--;
  }}
  public void before_name(SimpleType source, Name dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<name> ");
  }}
  public void before_restriction(SimpleType source, Restriction dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<restriction> ");
  }}
  public void before(Restriction host) {{
    out.print(": Restriction  (");
    indent++;
  }}
  public void after(Restriction host) {{
    out.print(" )");
    indent--;
  }}
  public void before_base(Restriction source, Base dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<base> ");
  }}
  public void before_simpleparts_list(Restriction source, SimpleParts_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<simpleparts_list> ");
  }}
  public void before(Name host) {{
    out.print(": Name  (");
    indent++;
  }}
  public void after(Name host) {{
    out.print(" )");
    indent--;
  }}
  public void before_string(Name source, String dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<string> ");
    out.print(" : String");
    out.print(" \"" + source.get_string() + "\" ");
  }}
  public void before(Ref host) {{
    out.print(": Ref  (");
    indent++;
  }}
  public void after(Ref host) {{
    out.print(" )");
    indent--;
  }}
  public void before_string(Ref source, String dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<string> ");
    out.print(" : String");
    out.print(" \"" + source.get_string() + "\" ");
  }}
  public void before(Base host) {{
    out.print(": Base  (");
    indent++;
  }}
  public void after(Base host) {{
    out.print(" )");
    indent--;
  }}
  public void before_string(Base source, String dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<string> ");
    out.print(" : String");
    out.print(" \"" + source.get_string() + "\" ");
  }}
  public void before(Type host) {{
    out.print(": Type  (");
    indent++;
  }}
  public void after(Type host) {{
    out.print(" )");
    indent--;
  }}
  public void before_string(Type source, String dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<string> ");
    out.print(" : String");
    out.print(" \"" + source.get_string() + "\" ");
  }}
  public void before(MinOccurs host) {{
    out.print(": MinOccurs  (");
    indent++;
  }}
  public void after(MinOccurs host) {{
    out.print(" )");
    indent--;
  }}
  public void before_string(MinOccurs source, String dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<string> ");
    out.print(" : String");
    out.print(" \"" + source.get_string() + "\" ");
  }}
  public void before(MaxOccurs host) {{
    out.print(": MaxOccurs  (");
    indent++;
  }}
  public void after(MaxOccurs host) {{
    out.print(" )");
    indent--;
  }}
  public void before_string(MaxOccurs source, String dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<string> ");
    out.print(" : String");
    out.print(" \"" + source.get_string() + "\" ");
  }}
  public void before(MinExclusive host) {{
    out.print(": MinExclusive  (");
    indent++;
  }}
  public void after(MinExclusive host) {{
    out.print(" )");
    indent--;
  }}
  public void before_value(MinExclusive source, Value dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<value> ");
  }}
  public void before_endpart(MinExclusive source, EndPart dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<endpart> ");
  }}
  public void before(MaxExclusive host) {{
    out.print(": MaxExclusive  (");
    indent++;
  }}
  public void after(MaxExclusive host) {{
    out.print(" )");
    indent--;
  }}
  public void before_value(MaxExclusive source, Value dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<value> ");
  }}
  public void before_endpart(MaxExclusive source, EndPart dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<endpart> ");
  }}
  public void before(MinInclusive host) {{
    out.print(": MinInclusive  (");
    indent++;
  }}
  public void after(MinInclusive host) {{
    out.print(" )");
    indent--;
  }}
  public void before_value(MinInclusive source, Value dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<value> ");
  }}
  public void before_endpart(MinInclusive source, EndPart dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<endpart> ");
  }}
  public void before(MaxInclusive host) {{
    out.print(": MaxInclusive  (");
    indent++;
  }}
  public void after(MaxInclusive host) {{
    out.print(" )");
    indent--;
  }}
  public void before_value(MaxInclusive source, Value dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<value> ");
  }}
  public void before_endpart(MaxInclusive source, EndPart dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<endpart> ");
  }}
  public void before(Value host) {{
    out.print(": Value  (");
    indent++;
  }}
  public void after(Value host) {{
    out.print(" )");
    indent--;
  }}
  public void before_string(Value source, String dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<string> ");
    out.print(" : String");
    out.print(" \"" + source.get_string() + "\" ");
  }}
  public void before(EndPart host) {{
    out.print(": EndPart  (");
    indent++;
  }}
  public void after(EndPart host) {{
    out.print(" )");
    indent--;
  }}
  public void before(PrintVisitor host) {{
    out.print(": PrintVisitor  (");
    indent++;
  }}
  public void after(PrintVisitor host) {{
    out.print(" )");
    indent--;
  }}
  public void before_indent(PrintVisitor source, int dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<indent> ");
    out.print(" : int \"" + dest + "\"");
  }}
  public void before_needSpace(PrintVisitor source, boolean dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<needSpace> ");
    out.print(" : boolean \"" + dest + "\"");
  }}
  public void before(CopyVisitor host) {{
    out.print(": CopyVisitor  (");
    indent++;
  }}
  public void after(CopyVisitor host) {{
    out.print(" )");
    indent--;
  }}
  public void before_copy(CopyVisitor source, Object dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<copy> ");
  }}
  public void before(SubgraphVisitor host) {{
    out.print(": SubgraphVisitor  (");
    indent++;
  }}
  public void after(SubgraphVisitor host) {{
    out.print(" )");
    indent--;
  }}
  public void before_is_equal(SubgraphVisitor source, boolean dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<is_equal> ");
    out.print(" : boolean \"" + dest + "\"");
  }}
  public void before(EqualVisitor host) {{
    out.print(": EqualVisitor  (");
    indent++;
  }}
  public void after(EqualVisitor host) {{
    out.print(" )");
    indent--;
  }}
  public void before_is_equal(EqualVisitor source, boolean dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<is_equal> ");
    out.print(" : boolean \"" + dest + "\"");
  }}
  public void before(DisplayVisitor host) {{
    out.print(": DisplayVisitor  (");
    indent++;
  }}
  public void after(DisplayVisitor host) {{
    out.print(" )");
    indent--;
  }}
  public void before_indent(DisplayVisitor source, int dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<indent> ");
    out.print(" : int \"" + dest + "\"");
  }}
  public void before(TraceVisitor host) {{
    out.print(": TraceVisitor  (");
    indent++;
  }}
  public void after(TraceVisitor host) {{
    out.print(" )");
    indent--;
  }}
  public void before_indent(TraceVisitor source, int dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<indent> ");
    out.print(" : int \"" + dest + "\"");
  }}
  public void before(Parts_List host) {{
    out.print(": Parts_List  {");
    indent++;
  }}
  public void after(Parts_List host) {{
    out.print(" }");
    indent--;
  }}
  public void before_first(Parts_List source, Nonempty_Parts_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<first> ");
  }}
  public void before(ElementParts_List host) {{
    out.print(": ElementParts_List  {");
    indent++;
  }}
  public void after(ElementParts_List host) {{
    out.print(" }");
    indent--;
  }}
  public void before_first(ElementParts_List source, Nonempty_ElementParts_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<first> ");
  }}
  public void before(Types_List host) {{
    out.print(": Types_List  {");
    indent++;
  }}
  public void after(Types_List host) {{
    out.print(" }");
    indent--;
  }}
  public void before_first(Types_List source, Nonempty_Types_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<first> ");
  }}
  public void before(SimpleParts_List host) {{
    out.print(": SimpleParts_List  {");
    indent++;
  }}
  public void after(SimpleParts_List host) {{
    out.print(" }");
    indent--;
  }}
  public void before_first(SimpleParts_List source, Nonempty_SimpleParts_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<first> ");
  }}
  public void before(Nonempty_Parts_List host) {{
    out.print(": Nonempty_Parts_List  (");
    indent++;
  }}
  public void after(Nonempty_Parts_List host) {{
    out.print(" )");
    indent--;
  }}
  public void before_it(Nonempty_Parts_List source, Parts dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<it> ");
  }}
  public void before_next(Nonempty_Parts_List source, Nonempty_Parts_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<next> ");
  }}
  public void before(Nonempty_ElementParts_List host) {{
    out.print(": Nonempty_ElementParts_List  (");
    indent++;
  }}
  public void after(Nonempty_ElementParts_List host) {{
    out.print(" )");
    indent--;
  }}
  public void before_it(Nonempty_ElementParts_List source, ElementParts dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<it> ");
  }}
  public void before_next(Nonempty_ElementParts_List source, Nonempty_ElementParts_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<next> ");
  }}
  public void before(Nonempty_Types_List host) {{
    out.print(": Nonempty_Types_List  (");
    indent++;
  }}
  public void after(Nonempty_Types_List host) {{
    out.print(" )");
    indent--;
  }}
  public void before_it(Nonempty_Types_List source, Types dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<it> ");
  }}
  public void before_next(Nonempty_Types_List source, Nonempty_Types_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<next> ");
  }}
  public void before(Nonempty_SimpleParts_List host) {{
    out.print(": Nonempty_SimpleParts_List  (");
    indent++;
  }}
  public void after(Nonempty_SimpleParts_List host) {{
    out.print(" )");
    indent--;
  }}
  public void before_it(Nonempty_SimpleParts_List source, SimpleParts dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<it> ");
  }}
  public void before_next(Nonempty_SimpleParts_List source, Nonempty_SimpleParts_List dest) {{
    out.println();    for (int i = 0; i < indent; i++) out.print("\t");
    out.print("<next> ");
  }}
{{  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_);
  }
}}
}