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Resolution-agnostic API for logic solvers

There is a newer version: 1.0.4

package it.unibo.tuprolog.solve.stdlib.primitive

import it.unibo.tuprolog.core.Substitution
import it.unibo.tuprolog.core.Term
import it.unibo.tuprolog.solve.ExecutionContext
import it.unibo.tuprolog.solve.primitive.Solve
import it.unibo.tuprolog.core.List as LogicList

object FindAll : AbstractCollectingPrimitive("findall") {
    override fun Solve.Request.computeAllSubstitutions(
        first: Term,
        second: Term,
        third: Term,
    ): Sequence {
        ensuringArgumentIsInstantiated(1)
        ensuringArgumentIsCallable(1)
        val solutions = computeIntermediateSolutions(second.castToStruct())
        val mapped = solutions.map { first[it.substitution].freshCopy() }
        return sequenceOf(mgu(third, LogicList.of(mapped)))
    }
}