package runEnv;

public class RunAddress extends RunValue {

/*
Represents the "value" of a var parameter
*/
	RunValue value;

	private Multiple base;
	private int offset;
	public RunAddress( Multiple base, int offset ) {
		if ( offset < 0 || offset >= base.size() )
			throw new Error( "Invalid address" );
		this.base = base;
		this.offset = offset;
		}

	public RunAddress( Multiple base ) {
		this( base, 0 );
		}

	public RunValue getValue() {
		return base.getValue( offset );
		}

	public void setValue( RunValue value ) {
		base.setValue( offset, value );
		}

	public RunAddress getAddress( int index ) {
		return new RunAddress( base, offset + index );
		}

	public RunAddress addressValue() {
		return this;
		}

	public String toString() {
//		new Error( "RunAddress" ).printStackTrace();
//		System.exit( 0 );
		return "(" + Integer.toHexString( base.size() ) + ")+" 
			+ Integer.toHexString( offset );
		}
	}