solve-classic/it.unibo.tuprolog.solve.classic.fsm/StatePrimitiveExecution

StatePrimitiveExecution

data class StatePrimitiveExecution(val context: ClassicExecutionContext) : AbstractState

"Primitive Execution": consumes exactly one response from the current primitive's response stream (ClassicExecutionContext.primitives). A successful response merges its substitution and returns to StateGoalSelection; an empty stream moves to StateBacktracking; an exceptional response moves to StateException.

Constructors

constructor(context: ClassicExecutionContext)

Properties

context

open override val context: ClassicExecutionContext

The execution context this state operates on.

isEndState

open val isEndState: Boolean

Whether this state is a terminal one for the current resolution step, i.e. an EndState.

Functions

asEndState

open fun asEndState(): EndState?

This state as an EndState, or null if isEndState is false.

castToEndState

open fun castToEndState(): EndState

This state as an EndState.

clone

open override fun clone(context: ClassicExecutionContext = this.context): StatePrimitiveExecution

Returns a copy of this state, replacing context with the given one (defaulting to the current context).

open override fun next(): State

Computes the state the machine transitions into from here -- a pure function of context.