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ruurtjan/functional-dsl-blog-3.scala

Created April 30, 2020 09:13
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functional-dsl-blog-3.scala
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functional-dsl-blog-3.scala
val always: EmailFilter = Always
val never: EmailFilter = always.negate
def senderIs(sender: Address): EmailFilter = SenderEquals(sender)
def senderIsNot(sender: Address): EmailFilter = SenderEquals(sender).negate
def recipientIs(recipient: Address): EmailFilter = RecipientEquals(recipient)
def recipientIsNot(recipient: Address): EmailFilter = RecipientEquals(recipient).negate
def senderIn(senders: Set[Address]): EmailFilter = senders.foldLeft(never)(_ || senderIs(_))
def recipientIn(recipients: Set[Address]): EmailFilter = recipients.foldLeft(never)(_ || recipientIs(_))
def bodyContains(phrase: String): EmailFilter = BodyContains(phrase)
def bodyDoesNotContain(phrase: String): EmailFilter = BodyContains(phrase).negate
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