Class PullBoundingHeads

java.lang.Object

org.ek9lang.compiler.phase7.generator.PullBoundingHeads

All Implemented Interfaces:

BiFunction<List<EK9Parser.StreamPartContext>, List<StageState>, List<StageState.Counter>>

final class PullBoundingHeads
extends Object
implements BiFunction<List<EK9Parser.StreamPartContext>, List<StageState>, List<StageState.Counter>>

THE heads that bound the pull of a loop over stages (StreamDemand, decision 10 rule B): every head before the first stage that ends the demand segment (EndsDemandSegment), in pipeline order. Empty when there is none (the loop is a plain hasNext()). Hold an instance.

Constructor Summary

Constructors

Constructor	Description
PullBoundingHeads()

Method Summary

Modifier and Type	Method	Description
List<StageState.Counter>	apply(List<EK9Parser.StreamPartContext> stages, List<StageState> stageStates)	The heads bounding the pull.

Methods inherited from class Object

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

Methods inherited from interface BiFunction

andThen

Constructor Details

PullBoundingHeads

PullBoundingHeads()

Method Details

apply

public List<StageState.Counter> apply(List<EK9Parser.StreamPartContext> stages,
 List<StageState> stageStates)

The heads bounding the pull.

Specified by:

apply in interface BiFunction<List<EK9Parser.StreamPartContext>, List<StageState>, List<StageState.Counter>>

Parameters:

stages - the stages of the loop

stageStates - their states, index for index