Merge pull request #422 from 47degrees/fix/compiler-warnings-2020-01-13

Fix compiler warnings across project

Author: sloshy

fetch-debug/src/main/scala/document.scala

@@ -42,7 +42,7 @@ abstract class Document {
    * Format this document on `writer` and try to set line
    * breaks so that the result fits in `width` columns.
    */
-  def format(width: Int, writer: Writer) {
+  def format(width: Int, writer: Writer): Unit = {
     type FmtState = (Int, Boolean, Document)
 
     def fits(w: Int, state: List[FmtState]): Boolean =
@@ -67,7 +67,7 @@ abstract class Document {
           fits(w, (i, false, d) :: z)
       }
 
-    def spaces(n: Int) {
+    def spaces(n: Int): Unit = {
       var rem = n
       while (rem >= 16) { writer write "                "; rem -= 16 }
       if (rem >= 8) { writer write "        "; rem -= 8 }

fetch-examples/src/test/scala/GithubExample.scala

@@ -85,12 +85,14 @@ class GithubExample extends AnyWordSpec with Matchers {
             val url           = GITHUB / "repos" / owner / repo +? ("access_token", ACCESS_TOKEN)
             val req           = Request[F](Method.GET, url)
             for {
-              result <- c.fetch[Repo](req)({
-                case Status.Ok(res) =>
-                  res.as[Repo]
-                case res =>
-                  CF.raiseError(new Exception(res.body.toString))
-              })
+              result <- c
+                .run(req)
+                .use[F, Repo] {
+                  case Status.Ok(res) =>
+                    res.as[Repo]
+                  case res =>
+                    CF.raiseError(new Exception(res.body.toString))
+                }
             } yield Option(result)
           }
         }
@@ -228,7 +230,7 @@ class GithubExample extends AnyWordSpec with Matchers {
   val GITHUB: Uri = Uri.unsafeFromString("https://api.github.com")
 
   private def fetchCollectionRecursively[F[_], A](c: Client[F], req: Request[F])(implicit
-      CF: MonadError[F, Throwable],
+      CF: BracketThrow[F],
       E: EntityDecoder[F, List[A]]
   ): F[List[A]] = {
     val REL_NEXT = "rel=\"next\"".r
@@ -256,7 +258,7 @@ class GithubExample extends AnyWordSpec with Matchers {
         )
 
     for {
-      result <- c.fetch[List[A]](req) {
+      result <- c.run(req).use[F, List[A]] {
         case Status.Ok(res) =>
           if (hasNext(res)) {
             for {

fetch/src/main/scala/fetch.scala

@@ -166,7 +166,8 @@ object `package` {
           val newRequest = Batch(combined, ds)
           val newResult = CombinationSuspend((r: FetchStatus) =>
             r match {
-              case FetchDone(m: Map[Any, Any]) =>
+              case FetchDone(preM) =>
+                val m       = preM.asInstanceOf[Map[Any, Any]]
                 val xResult = m.get(aId).map(FetchDone(_)).getOrElse(FetchMissing())
                 val yResult = m.get(anotherId).map(FetchDone(_)).getOrElse(FetchMissing())
                 CombinationBarrier(() => x.result, xResult)
@@ -184,7 +185,8 @@ object `package` {
         val newRequest = Batch(combined, ds)
         val newResult = CombinationSuspend((r: FetchStatus) =>
           r match {
-            case FetchDone(m: Map[Any, Any]) =>
+            case FetchDone(preM) =>
+              val m         = preM.asInstanceOf[Map[Any, Any]]
               val oneResult = m.get(oneId).map(FetchDone(_)).getOrElse(FetchMissing())
               CombinationBarrier(() => x.result, oneResult)
                 .flatMap(() => y.result)
@@ -201,7 +203,8 @@ object `package` {
         val newRequest = Batch(combined, ds)
         val newResult = CombinationSuspend((r: FetchStatus) =>
           r match {
-            case FetchDone(m: Map[Any, Any]) =>
+            case FetchDone(preM) =>
+              val m         = preM.asInstanceOf[Map[Any, Any]]
               val oneResult = m.get(oneId).map(FetchDone(_)).getOrElse(FetchMissing())
               CombinationBarrier(() => y.result, oneResult)
                 .flatMap(() => x.result)
@@ -258,8 +261,8 @@ object `package` {
 
   // Fetch Monad
 
-  implicit def fetchM[F[_]: Monad]: Monad[Fetch[F, ?]] =
-    new Monad[Fetch[F, ?]] with StackSafeMonad[Fetch[F, ?]] {
+  implicit def fetchM[F[_]: Monad]: Monad[Fetch[F, *]] =
+    new Monad[Fetch[F, *]] with StackSafeMonad[Fetch[F, *]] {
       def pure[A](a: A): Fetch[F, A] =
         Unfetch(
           Monad[F].pure(Done(a))