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• StringConverter.scala

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io.github.paoloboni.http.StringConverter.scala Maven / Gradle / Ivy

/*
 * Copyright (c) 2022 Paolo Boni
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package io.github.paoloboni.http

import java.time.Instant
import scala.deriving._
import scala.compiletime._

trait StringConverter[T]:
  def to(t: T): String

object StringConverter:
  def apply[T: StringConverter]: StringConverter[T] = summon

  given optionConverter[T](using converter: StringConverter[T]): StringConverter[Option[T]] with
    def to(obj: Option[T]): String = obj.map(converter.to).getOrElse("")

  given StringConverter[String] with
    def to(obj: String): String = obj

  given StringConverter[Int] with
    def to(obj: Int): String = obj.toString

  given StringConverter[Long] with
    def to(obj: Long): String = obj.toString

  given StringConverter[Boolean] with
    def to(obj: Boolean): String = obj.toString

  given StringConverter[BigDecimal] with
    def to(obj: BigDecimal): String = obj.bigDecimal.toPlainString

  given StringConverter[Instant] with
    def to(t: Instant): String = t.toEpochMilli.toString