public class Node 
{
  protected static int nextID=0;
  protected int id; 
  protected Vector children; 
  public Node parent; 
  public ClassNode classNode; 
  public Object data;
  public int type;
  public int offset;
  public int access;
  public Node decl;
  public String etype;
  public int lineNo;

  public Node(int type);
  public Node(int type, int lineNo);
  public Node(int type, Object data);
  public Node(int type, Object data, int lineNo);
  public int addEdge(Node dest);
  public int getID();
  public int getChildrenCount();
  public Node getChild(int idx);
}



public class Types
{
  public static final int T_DUMMY=0;
  public static final int T_CLASS=1;
  public static final int T_CLASSBODY=2;
  public static final int T_STRING=3;
  public static final int T_LIST=4;
  public static final int T_VARDEC=5;
  public static final int T_METHDEC=6;
  public static final int T_VOID=7;
  public static final int T_INT=8;
  public static final int T_VARSPEC=9;
  public static final int T_ASSIGN=10;
  public static final int T_DOWHILE=11;
  public static final int T_CALL=12;
  public static final int T_RETURN=13;
  public static final int T_BREAK=14;
  public static final int T_METHBODY=15;
  public static final int T_THIS=16;
  public static final int T_NEW=17;
  public static final int T_IF=18;
  public static final int T_WHILE=19;
  public static final int T_FOR=20;
  public static final int T_SWITCH=21;
  public static final int T_CASE=22;
  public static final int T_CONSTANT=23;
  public static final int T_METHCALL=24;
  public static final int T_VAR=25;
  public static final int T_DIMENSION=26;
  // operators
  public static final int T_UMINUS=27;
  public static final int T_NOT=28;
  public static final int T_PLUS=29;
  public static final int T_MINUS=30;
  public static final int T_MUL=31;
  public static final int T_DIV=32;
  public static final int T_MOD=33;
  public static final int T_EQ=34;
  public static final int T_NEQ=35;
  public static final int T_LESS=36;
  public static final int T_LEQ=37;
  public static final int T_GRE=38;
  public static final int T_GEQ=39;
  public static final int T_AND=40;
  public static final int T_OR=41;
  // access types
  public static final int T_STATIC=42;
  public static final int T_VIRTUAL=43;
  public static final int T_LOCAL=44;
  // something I forgot
  public static final int T_NULL=45;
  public static final int T_DEFAULT=46;
  // not present in the syntex tree
  public static final int T_STORE=47;
  public static final int T_LOAD=48;

  public static String toString(int type);
}



public class Util
{
  public static String toJVMName(String s);
  public static String toJVMClassName(String s);
  public static String toJVMType(Node n, Node dim);
  public static String toJVMArglistType(Node n);
  public static Node getClass(Node n);
  public static String getClassName(Node n);
  public static Node getMethod(Node n);
}



public class GDLVisualizer
{
  static boolean writeDecls=false;

  public static void createFile(String filename, Node root);
  public static void setWriteDecls(boolean onOff);
}



public class ClassNode 
{
  public ClassNode parent;
  public String className;
  public Hashtable methodTable;
  public Hashtable memberTable;

  public ClassNode(String name);
}