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
 ******************************************************************************/
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 ) ;
  }
}