From f32e8063133bbfb3e2d4b9057c6bdb93e5cb0c4a Mon Sep 17 00:00:00 2001
From: Kristian Nedrevold-Hansen <kristian@krined.no>
Date: Wed, 18 Dec 2024 12:50:09 +0100
Subject: [PATCH] Add support for defining the application/library type of
 scala-native projects

---
 config/src/bloop/config/Config.scala       | 13 ++++++-
 config/src/bloop/config/ConfigCodecs.scala | 40 ++++++++++++++++++++++
 2 files changed, 52 insertions(+), 1 deletion(-)

diff --git a/config/src/bloop/config/Config.scala b/config/src/bloop/config/Config.scala
index eff3a15..a6254b3 100644
--- a/config/src/bloop/config/Config.scala
+++ b/config/src/bloop/config/Config.scala
@@ -227,7 +227,8 @@ object Config {
       linkStubs: Boolean,
       check: Boolean,
       dump: Boolean,
-      output: Option[Path]
+      output: Option[Path],
+      @unroll buildTarget: Option[NativeBuildTarget] = None
   ) extends PlatformConfig
 
   object NativeConfig {
@@ -236,6 +237,16 @@ object Config {
     // FORMAT: ON
   }
 
+  sealed abstract class NativeBuildTarget(val id: String)
+  object NativeBuildTarget {
+    case object Application extends NativeBuildTarget("application")
+    case object LibraryDynamic extends NativeBuildTarget("dynamic")
+    case object LibraryStatic extends NativeBuildTarget("static")
+
+    val All: List[String] =
+      List(Application.id, LibraryDynamic.id, LibraryStatic.id)
+  }
+
   case class NativeOptions(linker: List[String], compiler: List[String])
   object NativeOptions {
     val empty: NativeOptions = NativeOptions(Nil, Nil)
diff --git a/config/src/bloop/config/ConfigCodecs.scala b/config/src/bloop/config/ConfigCodecs.scala
index c9552fc..b127b90 100644
--- a/config/src/bloop/config/ConfigCodecs.scala
+++ b/config/src/bloop/config/ConfigCodecs.scala
@@ -204,6 +204,46 @@ object ConfigCodecs {
     }
   }
 
+  implicit val codecNativBuildTarget
+      : JsonValueCodec[Config.NativeBuildTarget] = {
+    new JsonValueCodec[Config.NativeBuildTarget] {
+      val nullValue: Config.NativeBuildTarget =
+        null.asInstanceOf[Config.NativeBuildTarget]
+      def encodeValue(x: Config.NativeBuildTarget, out: JsonWriter): Unit = {
+        val str = x match {
+          case Config.NativeBuildTarget.Application =>
+            Config.NativeBuildTarget.Application.id
+          case Config.NativeBuildTarget.LibraryDynamic =>
+            Config.NativeBuildTarget.LibraryDynamic.id
+          case Config.NativeBuildTarget.LibraryStatic =>
+            Config.NativeBuildTarget.LibraryStatic.id
+        }
+        out.writeVal(str)
+      }
+      def decodeValue(
+          in: JsonReader,
+          default: Config.NativeBuildTarget
+      ): Config.NativeBuildTarget =
+        if (in.isNextToken('"')) {
+          in.rollbackToken()
+          in.readString(null) match {
+            case Config.NativeBuildTarget.Application.id =>
+              Config.NativeBuildTarget.Application
+            case Config.NativeBuildTarget.LibraryDynamic.id =>
+              Config.NativeBuildTarget.LibraryDynamic
+            case Config.NativeBuildTarget.LibraryStatic.id =>
+              Config.NativeBuildTarget.LibraryStatic
+            case _ =>
+              in.decodeError(
+                s"Expected build target ${Config.NativeBuildTarget.All.mkString("'", "', '", "'")}"
+              )
+          }
+        } else {
+          in.rollbackToken()
+          nullValue
+        }
+    }
+  }
   implicit val codecJvmConfig: JsonValueCodec[Config.JvmConfig] =
     JsonCodecMaker.makeWithRequiredCollectionFields[Config.JvmConfig]