runner-api/dev.ust.zinc.grader.pipeline/StageResult/Undefined

Undefined

object Undefined : StageResult

StageResult indicating that the stage does not output anything of meaningful value.

This implies that this stage and the next stage will not utilize data passing via PipelineStage.execute, and may allow PipelineTransformer to perform more aggressive optimizations.

For example, a stage may use this as its output type if it is always used as a terminating stage in a pipeline.

Note: This stage can only be used as an output parameter (PipelineStage.outType).

Functions

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open override fun asAnyResult(): StageResult.Any

Converts this into a StageResult.Any instance.

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inline fun <OutT : StageResult> StageResult.castAs(): StageResult

Casts this into the stage result type of OutT, or throws IllegalArgumentException if the conversion is not possible.

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fun StageResult.castTo(outClazz: KClass<out StageResult>): StageResult

Casts this into the stage result type of outClazz.