Forgot some code

reactivecore · Mar 31, 2023 · 783528b · 783528b
1 parent ac761f8
commit 783528b
Showing 1 changed file with 19 additions and 0 deletions.
diff --git a/schema/src/main/scala-3/net/reactivecore/cjs/util/Derivation.scala b/schema/src/main/scala-3/net/reactivecore/cjs/util/Derivation.scala
@@ -0,0 +1,19 @@
+package net.reactivecore.cjs.util
+import scala.compiletime.{erasedValue, summonInline}
+import scala.deriving.Mirror
+
+object Derivation {
+
+  inline def deriveLabels[T](using m: Mirror.Of[T]): List[String] = {
+      // Also See https://stackoverflow.com/a/70416544/335385
+      summonLabels[m.MirroredElemLabels]
+  }
+
+  inline def summonLabels[T <: Tuple]: List[String] = {
+    inline erasedValue[T] match {
+      case _: EmptyTuple => Nil
+      case _: (t *: ts)  => summonInline[ValueOf[t]].value.asInstanceOf[String] :: summonLabels[ts]
+    }
+  }
+
+}