package java_cup;


import java.lang.reflect.Field;
import java.lang.reflect.Modifier;

import java_cup.runtime.Symbol;


@SuppressWarnings (
{ "all" } )
public class ErrorManager
{

  private static ErrorManager errorManager;


  private int errors = 0;


  private int warnings = 0;


  private int fatals = 0;


  public int getFatalCount ()
  {
    return fatals;
  }


  public int getErrorCount ()
  {
    return errors;
  }


  public int getWarningCount ()
  {
    return warnings;
  }


  static
  {
    errorManager = new ErrorManager ();
  }


  public static ErrorManager getManager ()
  {
    return errorManager;
  }


  private ErrorManager ()
  {
  }


  /**
   * Error message format: ERRORLEVEL at (LINE/COLUMN)@SYMBOL: MESSAGE
   * ERRORLEVEL : MESSAGE
   */
  public void emit_fatal ( String message )
  {
    System.err.println ( "Fatal : " + message );
    fatals++ ;
  }


  public void emit_fatal ( String message, Symbol sym )
  {
    // System.err.println("Fatal at
    // ("+sym.left+"/"+sym.right+")@"+convSymbol(sym)+" : "+message);
    System.err.println ( "Fatal: " + message + " @ " + sym );
    fatals++ ;
  }


  public void emit_warning ( String message )
  {
    System.err.println ( "Warning : " + message );
    warnings++ ;
  }


  public void emit_warning ( String message, Symbol sym )
  {
    // System.err.println("Warning at
    // ("+sym.left+"/"+sym.right+")@"+convSymbol(sym)+" : "+message);
    System.err.println ( "Fatal: " + message + " @ " + sym );
    warnings++ ;
  }


  public void emit_error ( String message )
  {
    System.err.println ( "Error : " + message );
    errors++ ;
  }


  public void emit_error ( String message, Symbol sym )
  {
    // System.err.println("Error at
    // ("+sym.left+"/"+sym.right+")@"+convSymbol(sym)+" : "+message);
    System.err.println ( "Error: " + message + " @ " + sym );
    errors++ ;
  }


  private static String convSymbol ( Symbol symbol )
  {
    String result = ( symbol.value == null ) ? "" : " (\""
        + symbol.value.toString () + "\")";
    Field [] fields = sym.class.getFields ();
    for ( int i = 0 ; i < fields.length ; i++ )
    {
      if ( !Modifier.isPublic ( fields [ i ].getModifiers () ) )
        continue;
      try
      {
        if ( fields [ i ].getInt ( null ) == symbol.sym )
          return fields [ i ].getName () + result;
      }
      catch ( Exception ex )
      {
      }
    }
    return symbol.toString () + result;
  }
}