gapt.proofs.context.update.ConstantDeclaration.scala Maven / Gradle / Ivy

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General Architecture for Proof Theory

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package gapt.proofs.context.update

import gapt.expr.Const
import gapt.expr.ty.TVar
import gapt.expr.util.typeVariables
import gapt.proofs.context.Context
import gapt.proofs.context.State
import gapt.proofs.context.facet.Constants

case class ConstantDeclaration(const: Const) extends Update {
  override def apply(ctx: Context): State = {
    ctx.check(const.ty)
    for (p <- const.params) require(p.isInstanceOf[TVar])
    require(typeVariables(const).toSet subsetOf const.params.toSet)
    ctx.state.update[Constants](_ + const)
  }
}