fm.common.rich.RichCharOption.scala Maven / Gradle / Ivy

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/*
 * Copyright 2014 Frugal Mechanic (http://frugalmechanic.com)
 *
 * 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 fm.common.rich

import fm.common.Interner

object RichCharOption {
  private val interner: Interner[Option[Char]] = Interner()
}

final class RichCharOption(val opt: Option[Char]) extends AnyVal {
  /**
   * Like String.intern but for Option[Char]
   */
  def intern: Option[Char] = if (opt.isEmpty) None else RichCharOption.interner(opt)
}