gapt.proofs.IndexOrFormula.scala Maven / Gradle / Ivy

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General Architecture for Proof Theory

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package gapt.proofs

import gapt.expr.formula.Formula

sealed trait IndexOrFormula {
  def getFormula(sequent: HOLSequent): Formula
}

object IndexOrFormula {
  case class IsIndex(index: SequentIndex) extends IndexOrFormula {
    def getFormula(sequent: HOLSequent): Formula = sequent(index)
  }
  case class IsFormula(formula: Formula) extends IndexOrFormula {
    def getFormula(sequent: HOLSequent): Formula = formula
  }

  implicit def ofIndex(index: SequentIndex): IndexOrFormula = IsIndex(index)
  implicit def ofFormula(formula: Formula): IndexOrFormula = IsFormula(formula)
}