LazyTransformer(IPersistentMap meta, object first, LazyTransformer rest)
: base(meta)
{
_stepper = null;
_first = first;
_rest = rest;
}
public override Object invoke(Object result)
{
LazyTransformer lt = (LazyTransformer)result;
lt._stepper = null;
return(lt);
}
public override Object invoke(Object result)
{
LazyTransformer lt = (LazyTransformer)(RT.isReduced(result)?
((Reduced)result).deref():result);
lt._stepper = null;
return(lt);
}
public override Object invoke(Object result, Object input)
{
LazyTransformer lt = (LazyTransformer)result;
lt._first = input;
lt._rest = new LazyTransformer(lt._stepper);
lt._stepper = null;
return(lt._rest);
}
public void step(LazyTransformer lt)
{
while (lt._stepper != null && MoveNext())
{
if (RT.isReduced(_xform.applyTo(RT.cons(lt, Current()))))
{
if (lt._rest != null)
{
lt._rest._stepper = null;
}
break;
}
}
if (lt._stepper != null)
{
_xform.invoke(lt);
}
}
public void step(LazyTransformer lt)
{
while (lt._stepper != null && MoveNext())
{
if (RT.isReduced(_xform.applyTo(RT.cons(lt, Current()))))
{
lt._stepper = null;
LazyTransformer et = lt;
while (et._rest != null)
{
et = et._rest;
et._stepper = null;
}
_xform.invoke(et);
return;
}
}
if (lt._stepper != null)
{
_xform.invoke(lt);
}
}
