Class FOR_StepUntil

java.lang.Object

simula.runtime.FOR_Element

simula.runtime.FOR_StepUntil

All Implemented Interfaces:

Iterator<Boolean>

public final class FOR_StepUntil
extends FOR_Element

For-statement step until element.

 A1 step A2 until A3

         C := A1;
         DELTA := A2;
         while DELTA*(C-A3) <= 0
         do begin
             S;
             DELTA := A2;
             C := C + DELTA;
         end while;
         ... next for list element

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final RTS_NAME<Number>	cvar	The for-statement control variable.
(package private) final RTS_NAME<Number>	init	The initial value.
(package private) Number	nextValue	Next value.
(package private) final RTS_NAME<Number>	step	The step value.
(package private) final RTS_NAME<Number>	until	The until value.

Fields inherited from class simula.runtime.FOR_Element

more

Constructor Summary

Constructors

Constructor	Description
FOR_StepUntil(RTS_NAME<Number> cvar, RTS_NAME<Number> init, RTS_NAME<Number> step, RTS_NAME<Number> until)	Create step until element.

Method Summary

Modifier and Type	Method	Description
Boolean	next()	Update the control variable with the next value if any.

Methods inherited from class simula.runtime.FOR_Element

hasNext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Field Details

cvar

final RTS_NAME<Number> cvar

The for-statement control variable.

init

final RTS_NAME<Number> init

The initial value.

step

final RTS_NAME<Number> step

The step value.

until

final RTS_NAME<Number> until

The until value.

nextValue

Number nextValue

Next value.

Constructor Details

FOR_StepUntil

public FOR_StepUntil(RTS_NAME<Number> cvar,
 RTS_NAME<Number> init,
 RTS_NAME<Number> step,
 RTS_NAME<Number> until)

Create step until element.

Parameters:

cvar - the for-statement control variable

init - the initial value expression

step - the step value expression

until - the until value expression

Method Details

next

public Boolean next()

Update the control variable with the next value if any.

Returns:

true if the control variable was updated; otherwise false.