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• literalMacros.scala

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com.malliina.http.literalMacros.scala Maven / Gradle / Ivy

package com.malliina.http

import com.malliina.values.ErrorMessage

//import scala.reflect.macros.blackbox

trait LiteralSyntax {
//  implicit def urlLiteralsSyntax(sc: StringContext): LiteralsOps =
//    new LiteralsOps(sc)
}

object LiteralMacros {
//  def urlInterpolator(c: blackbox.Context)(args: c.Expr[Any]*): c.Expr[FullUrl] =
//    singlePartInterpolator(c)(
//      args,
//      s => FullUrl.build(s),
//      s =>
//        c.universe.reify(
//          FullUrl.build(s.splice).fold(err => throw new Exception(err.message), identity)
//        )
//    )
//
//  // Adapted from http4s macro code
//  private def singlePartInterpolator[A](c: blackbox.Context)(
//    args: Seq[c.Expr[Any]],
//    validate: String => Either[ErrorMessage, A],
//    construct: c.Expr[String] => c.Expr[A]
//  ): c.Expr[A] = {
//    import c.universe._
//    identity(args)
//    c.prefix.tree match {
//      case Apply(_, List(Apply(_, (lcp @ Literal(Constant(p: String))) :: Nil))) =>
//        validate(p).fold(
//          error => c.abort(c.enclosingPosition, error.message),
//          ok => construct(c.Expr(lcp))
//        )
//    }
//  }
}