ComplexSymbolFactory.java

package java_cup.runtime;


/**
 * Default Implementation for SymbolFactory, creates plain old Symbols
 * 
 * @version last updated 27-03-2006
 * @author Michael Petter
 */
/*******************************************************************************
 * class DefaultSymbolFactory interface for creating new symbols
 ******************************************************************************/
@SuppressWarnings (
{ "all" } )
public class ComplexSymbolFactory implements SymbolFactory
{

  public static class Location
  {

    private String unit = "unknown";


    private int line, column;


    public Location ( String unit, int line, int column )
    {
      this.unit = unit;
      this.line = line;
      this.column = column;
    }


    public Location ( int line, int column )
    {
      this.line = line;
      this.column = column;
    }


    public String toString ()
    {
      return unit + ":" + line + "/" + column;
    }


    public int getColumn ()
    {
      return column;
    }


    public int getLine ()
    {
      return line;
    }


    public String getUnit ()
    {
      return unit;
    }
  }


  /**
   * ComplexSymbol with detailed Location Informations and a Name
   */
  public static class ComplexSymbol extends Symbol
  {

    protected String name;


    protected Location xleft, xright;


    public ComplexSymbol ( String name, int id )
    {
      super ( id );
      this.name = name;
    }


    public ComplexSymbol ( String name, int id, Object value )
    {
      super ( id, value );
      this.name = name;
    }


    public String toString ()
    {
      if ( xleft == null || xright == null )
        return "Symbol: " + name;
      return "Symbol: " + name + " (" + xleft + " - " + xright + ")";
    }


    public ComplexSymbol ( String name, int id, int state )
    {
      super ( id, state );
      this.name = name;
    }


    public ComplexSymbol ( String name, int id, Symbol left, Symbol right )
    {
      super ( id, left, right );
      this.name = name;
      if ( left != null )
        this.xleft = ( ( ComplexSymbol ) left ).xleft;
      if ( right != null )
        this.xright = ( ( ComplexSymbol ) right ).xright;
    }


    public ComplexSymbol ( String name, int id, Location left, Location right )
    {
      super ( id );
      this.name = name;
      this.xleft = left;
      this.xright = right;
    }


    public ComplexSymbol ( String name, int id, Symbol left, Symbol right,
        Object value )
    {
      super ( id, value );
      this.name = name;
      if ( left != null )
        this.xleft = ( ( ComplexSymbol ) left ).xleft;
      if ( right != null )
        this.xright = ( ( ComplexSymbol ) right ).xright;
    }


    public ComplexSymbol ( String name, int id, Location left, Location right,
        Object value )
    {
      super ( id, value );
      this.name = name;
      this.xleft = left;
      this.xright = right;
    }


    public Location getLeft ()
    {
      return xleft;
    }


    public Location getRight ()
    {
      return xright;
    }
  }


  // Factory methods
  public Symbol newSymbol ( String name, int id, Location left, Location right,
      Object value )
  {
    return new ComplexSymbol ( name, id, left, right, value );
  }


  public Symbol newSymbol ( String name, int id, Location left, Location right )
  {
    return new ComplexSymbol ( name, id, left, right );
  }


  public Symbol newSymbol ( String name, int id, Symbol left, Symbol right,
      Object value )
  {
    return new ComplexSymbol ( name, id, left, right, value );
  }


  public Symbol newSymbol ( String name, int id, Symbol left, Symbol right )
  {
    return new ComplexSymbol ( name, id, left, right );
  }


  public Symbol newSymbol ( String name, int id )
  {
    return new ComplexSymbol ( name, id );
  }


  public Symbol newSymbol ( String name, int id, Object value )
  {
    return new ComplexSymbol ( name, id, value );
  }


  public Symbol startSymbol ( String name, int id, int state )
  {
    return new ComplexSymbol ( name, id, state );
  }
}