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• EncodeStream.scala

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io.finch.EncodeStream.scala Maven / Gradle / Ivy

package io.finch

import com.twitter.io.{Buf, Reader}

import java.nio.charset.Charset

/** A type-class that defines encoding of a stream in a shape of `S[F[_], A]` to Finagle's [[com.twitter.io.Reader]]. */
trait EncodeStream[F[_], S[_[_], _], A] {

  type ContentType <: String

  def apply(s: S[F, A], cs: Charset): F[Reader[Buf]]
}

object EncodeStream {

  type Aux[F[_], S[_[_], _], A, CT <: String] =
    EncodeStream[F, S, A] { type ContentType = CT }

  type Json[F[_], S[_[_], _], A] = Aux[F, S, A, Application.Json]

  type Text[F[_], S[_[_], _], A] = Aux[F, S, A, Text.Plain]
}