epus-std_sjs1_3.0.5.3.source-code.TopicName.scala Maven / Gradle / Ivy

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/*
 * Copyright 2021 Hossein Naderi
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package lepus.std

import lepus.protocol.domains.ShortString

import scala.quoted.*

opaque type TopicName <: ShortString = ShortString
object TopicName {
  private val validPattern = "^(?:[A-Za-z0-9]+\\.)*[A-Za-z0-9]*$".r

  private final def build(t: Expr[String])(using ctx: Quotes): Expr[TopicName] =
    import ctx.reflect.report
    t.value match {
      case Some(v) => from(v).fold(report.errorAndAbort, Expr(_))
      case None    => report.errorAndAbort("Not a literal value!")
    }

  inline def apply(inline name: String): TopicName = ${ build('name) }

  def from(name: String): Either[String, TopicName] =
    ShortString.from(name).flatMap {
      case str if validPattern.matches(str) => ShortString.from(str)
      case bad => Left(s"Invalid topic name `$bad`!")
    }

  extension (topic: TopicName) {
    inline def selector: TopicSelector = TopicSelector.exact(topic)
  }
}