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Parser.scala
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Parser.scala
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/*
* Copyright 2023 circe
*
* 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 io.circe
import cats.data.NonEmptyList
import cats.data.Validated
import cats.data.ValidatedNel
import java.io.Serializable
trait Parser extends Serializable {
def parse(input: String): Either[ParsingFailure, Json]
protected[this] final def finishDecode[A](input: Either[ParsingFailure, Json])(implicit
decoder: Decoder[A]
): Either[Error, A] = input match {
case Right(json) => decoder.decodeJson(json)
case l @ Left(_) => l.asInstanceOf[Either[Error, A]]
}
protected[this] final def finishDecodeAccumulating[A](input: Either[ParsingFailure, Json])(implicit
decoder: Decoder[A]
): ValidatedNel[Error, A] = input match {
case Right(json) =>
decoder.decodeAccumulating(json.hcursor).leftMap {
case NonEmptyList(h, t) => NonEmptyList(h, t)
}
case Left(error) => Validated.invalidNel(error)
}
final def decode[A: Decoder](input: String): Either[Error, A] =
finishDecode(parse(input))
final def decodeAccumulating[A: Decoder](input: String): ValidatedNel[Error, A] =
finishDecodeAccumulating(parse(input))
}