Fix rendering of deprecated annotation in mixins (#1123)

Co-authored-by: ghostbuster91 <ghostbuster91@users.noreply.github.com>
Co-authored-by: David Francoeur <dfrancoeur04@gmail.com>

modules/codegen/src/smithy4s/codegen/internals/Renderer.scala

@@ -624,7 +624,13 @@ private[internals] class Renderer(compilationUnit: CompilationUnit) { self =>
     } else Line.empty
     block(line"trait $name$ext") {
       lines(
-        fields.map(f => line"def ${fieldToRenderLine(f, noDefault = true)}")
+        fields.map { f =>
+          lines(
+            deprecationAnnotation(f.hints),
+            Line.empty,
+            line"def ${fieldToRenderLine(f, noDefault = true)}"
+          )
+        }
       )
     }
   }
@@ -884,12 +890,14 @@ private[internals] class Renderer(compilationUnit: CompilationUnit) { self =>
           )
         }
 
-        deprecationAnnotation(hints).appendIf(_.nonEmpty)(Line.space) +
-          line"$name: " + tpeAndDefault
+        line"$name: " + tpeAndDefault
     }
   }
   private def renderArgs(fields: List[Field]): Line = fields
-    .map(fieldToRenderLine(_))
+    .map { f =>
+      deprecationAnnotation(f.hints).appendIf(_.nonEmpty)(Line.space) +
+        fieldToRenderLine(f)
+    }
     .intercalate(Line.comma)
 
   private def renderEnum(

modules/example/src/smithy4s/example/DeprecatedMixin.scala

@@ -0,0 +1,9 @@
+package smithy4s.example
+
+
+@deprecated(message = "A compelling reason", since = "0.0.1")
+trait DeprecatedMixin {
+  @deprecated(message = "N/A", since = "N/A")
+  def strings: Option[List[String]]
+  def other: Option[List[String]]
+}

modules/example/src/smithy4s/example/DeprecatedStructure.scala

@@ -8,7 +8,7 @@ import smithy4s.schema.Schema.string
 import smithy4s.schema.Schema.struct
 
 @deprecated(message = "A compelling reason", since = "0.0.1")
-case class DeprecatedStructure(@deprecated(message = "N/A", since = "N/A") name: Option[String] = None, nameV2: Option[String] = None, strings: Option[List[String]] = None)
+case class DeprecatedStructure(@deprecated(message = "N/A", since = "N/A") strings: Option[List[String]] = None, other: Option[List[String]] = None, @deprecated(message = "N/A", since = "N/A") name: Option[String] = None, nameV2: Option[String] = None) extends DeprecatedMixin
 object DeprecatedStructure extends ShapeTag.Companion[DeprecatedStructure] {
   val id: ShapeId = ShapeId("smithy4s.example", "DeprecatedStructure")
 
@@ -17,9 +17,10 @@ object DeprecatedStructure extends ShapeTag.Companion[DeprecatedStructure] {
   )
 
   implicit val schema: Schema[DeprecatedStructure] = struct(
+    Strings.underlyingSchema.optional[DeprecatedStructure]("strings", _.strings).addHints(smithy.api.Deprecated(message = None, since = None)),
+    Strings.underlyingSchema.optional[DeprecatedStructure]("other", _.other),
     string.optional[DeprecatedStructure]("name", _.name).addHints(smithy.api.Deprecated(message = None, since = None)),
     string.optional[DeprecatedStructure]("nameV2", _.nameV2),
-    Strings.underlyingSchema.optional[DeprecatedStructure]("strings", _.strings),
   ){
     DeprecatedStructure.apply
   }.withId(id).addHints(hints)

sampleSpecs/deprecations.smithy

@@ -3,10 +3,16 @@ namespace smithy4s.example
 use smithy4s.meta#adtMember
 
 @deprecated(message: "A compelling reason", since: "0.0.1")
-structure DeprecatedStructure {
+@mixin
+structure DeprecatedMixin {
+  @deprecated strings: Strings,
+  other: Strings
+}
+
+@deprecated(message: "A compelling reason", since: "0.0.1")
+structure DeprecatedStructure with [DeprecatedMixin] {
   @deprecated name: String,
-  nameV2: String,
-  strings: Strings
+  nameV2: String
 }
 
 @deprecated