package runEnv;

import java.util.*;

public class Cast {

	public static boolean booleanValue( Object object ) {
		if ( object instanceof Boolean )
			return ( ( Boolean ) object ).booleanValue();
		else
			throw new Error( "Can't cast \"" + object + "\" to Boolean" );
		}

	public static int intValue( Object object ) {
		if ( object instanceof Integer )
			return ( ( Integer ) object ).intValue();
		else
			throw new Error( "Can't cast \"" + object + "\" to Integer" );
		}

	public static char charValue( Object object ) {
		if ( object instanceof Character )
			return ( ( Character ) object ).charValue();
		else
			throw new Error( "Can't cast \"" + object + "\" to Character" );
		}

	public static String stringValue( Object object ) {
		if ( object instanceof String )
			return ( String ) object;
		else
			throw new Error( "Can't cast \"" + object + "\" to String" );
		}

	public static FunctionValue functionValue( Object object ) {
		if ( object instanceof FunctionValue )
			return ( FunctionValue ) object;
		else
			throw new Error( "Can't cast \"" + object + "\" to Function" );
		}

	public static Vector< Object > arrayValue( Object object ) {
		if ( object instanceof Vector )
			return ( Vector< Object > ) object;
		else
			throw new Error( "Can't cast \"" + object + "\" to array" );
		}

	public static NullValue nullValue( Object object ) {
		if ( object instanceof NullValue )
			return ( NullValue ) object;
		else
			throw new Error( "Can't cast \"" + object + "\" to NullValue" );
		}
	}