gapt.expr.formula.constants.MonomorphicLogicalC.scala Maven / Gradle / Ivy

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General Architecture for Proof Theory

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package gapt.expr.formula.constants

import gapt.expr.Const
import gapt.expr.Expr
import gapt.expr.ty.Ty

/**
 * Logical constant with a fixed type.
 *
 * @param name  The name of this logical constant, e.g. "∧"
 * @param ty  The fixed type of this logical constant, e.g. To->To->To
 */
class MonomorphicLogicalC(name: String, val ty: Ty) extends LogicalC(name) {
  private lazy val singleton = Const(name, ty)
  def apply(): Const = singleton
  def unapply(e: Expr): Boolean = singleton == e
  def unapply(p: (String, Ty, List[Ty])): Boolean = p._1 == name && p._2 == ty && p._3.isEmpty
}