print("PEEK(data->context, ");
print("(PEEK(data->context, ");
    public void visitPeekExpression(SIRPeekExpression self,                                    CType tapeType,                                    JExpression num)    {        print("PEEK(data->context, ");        if (tapeType != null)            print(tapeType);        else            print("/* null tapeType! */ int");        print(", ");        num.accept(this);        print(")");    }