scala-yaml 0.3.0 (#442)

README.md

@@ -5,8 +5,10 @@
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/io.circe/circe-yaml_2.12/badge.svg)](https://maven-badges.herokuapp.com/maven-central/io.circe/circe-yaml_2.12)
 
 This is a small library for parsing [YAML](https://yaml.org) into [circe](https://github.com/circe/circe)'s `Json` AST.
- * For parsing YAML 1.1 it uses [SnakeYAML](https://bitbucket.org/snakeyaml/snakeyaml).
- * For parsing YAML 1.2 it uses [snakeyaml-engine](https://bitbucket.org/snakeyaml/snakeyaml-engine).
+You can choose from multiple YAML backends:
+ * `circe-yaml`: For parsing YAML 1.1 it uses [SnakeYAML](https://bitbucket.org/snakeyaml/snakeyaml).
+ * `circe-yaml-v12`: For parsing YAML 1.2 it uses [snakeyaml-engine](https://bitbucket.org/snakeyaml/snakeyaml-engine).
+ * `circe-yaml-scalayaml`: For parsing YAML on Scala.js or Scala Native (as well as Scala/JVM) it uses [scala-yaml](https://github.com/VirtusLab/scala-yaml).
 
 ## Why?
 
@@ -24,11 +26,15 @@ The artifact is hosted by Sonatype, and release versions are synced to Maven Cen
 
 For YAML 1.1
 ```scala
-libraryDependencies += "io.circe" %% "circe-yaml" % "0.14.2"
+libraryDependencies += "io.circe" %% "circe-yaml" % "0.16.0"
 ```
 or for YAML 1.2
 ```scala
-libraryDependencies += "io.circe" %% "circe-yaml-v12" % "0.14.2"
+libraryDependencies += "io.circe" %% "circe-yaml-v12" % "0.16.0"
+```
+or for YAML on Scala.js or Scala Native (as well as Scala/JVM)
+```scala
+libraryDependencies += "io.circe" %% "circe-yaml-scalayaml" % "0.16.0"
 ```
 
 Snapshot versions are available by adding the Sonatype Snapshots resolver:

build.sbt

@@ -1,4 +1,4 @@
-ThisBuild / tlBaseVersion := "0.15"
+ThisBuild / tlBaseVersion := "0.16"
 ThisBuild / circeRootOfCodeCoverage := None
 ThisBuild / startYear := Some(2016)
 ThisBuild / tlFatalWarnings := false //TODO: ... fix this someday
@@ -33,7 +33,7 @@ val root = tlCrossRootProject.aggregate(
 lazy val `circe-yaml-common` = crossProject(JSPlatform, JVMPlatform, NativePlatform)
   .in(file("circe-yaml-common"))
   .settings(
-    description := "Library for converting between SnakeYAML's AST (YAML 2.0) and circe's AST",
+    description := "Common interface for circe-yaml.",
     libraryDependencies ++= Seq(
       "io.circe" %%% "circe-core" % Versions.circe
     ),
@@ -44,7 +44,7 @@ lazy val `circe-yaml` = project
   .in(file("circe-yaml"))
   .dependsOn(`circe-yaml-common`.jvm)
   .settings(
-    description := "Library for converting between SnakeYAML's AST (YAML 2.0) and circe's AST",
+    description := "Library for converting between SnakeYAML's AST (YAML 1.1) and circe's AST",
     libraryDependencies ++= Seq(
       "org.yaml" % "snakeyaml" % Versions.snakeYaml,
       "io.circe" %% "circe-jawn" % Versions.circe % Test,
@@ -61,7 +61,7 @@ lazy val `circe-yaml-v12` = project
   .in(file("circe-yaml-v12"))
   .dependsOn(`circe-yaml-common`.jvm)
   .settings(
-    description := "Library for converting between snakeyaml-engine's AST (YAML 2.0) and circe's AST",
+    description := "Library for converting between snakeyaml-engine's AST (YAML 1.2) and circe's AST",
     libraryDependencies ++= Seq(
       "io.circe" %% "circe-jawn" % Versions.circe % Test,
       "org.snakeyaml" % "snakeyaml-engine" % Versions.snakeYamlEngine,
@@ -79,7 +79,7 @@ lazy val `circe-yaml-scalayaml` = crossProject(JSPlatform, JVMPlatform, NativePl
   .settings(
     description := "Library for converting between scala-yaml AST and circe's AST",
     libraryDependencies ++= Seq(
-      "org.virtuslab" %%% "scala-yaml" % "0.1.0",
+      "org.virtuslab" %%% "scala-yaml" % "0.3.0",
       "org.scalatest" %%% "scalatest" % Versions.scalaTest % Test
     ),
     tlVersionIntroduced := List("2.13", "3").map(_ -> "0.15.3").toMap

circe-yaml-scalayaml/shared/src/main/scala/io/circe/yaml/scalayaml/Printer.scala

@@ -20,6 +20,8 @@ import io.circe.Json
 import org.virtuslab.yaml.Node
 import org.virtuslab.yaml.NodeOps
 
+import scala.collection.immutable.ListMap
+
 object Printer extends io.circe.yaml.common.Printer {
 
   override def pretty(json: Json): String = {
@@ -31,7 +33,8 @@ object Printer extends io.circe.yaml.common.Printer {
     case Json.JArray(value) =>
       Node.SequenceNode(value.map(jsonToNode): _*)
     case Json.JObject(value) =>
-      Node.MappingNode(value.toMap.map { case (key, value) => (Node.ScalarNode(key): Node) -> jsonToNode(value) })
+      val mappings = value.toList.map { case (key, value) => (Node.ScalarNode(key): Node) -> jsonToNode(value) }
+      Node.MappingNode(ListMap.from(mappings))
     case json =>
       Node.ScalarNode(json.toString)
   }

circe-yaml-scalayaml/shared/src/test/scala/io/circe/yaml/scalayaml/PrinterTests.scala

@@ -75,7 +75,7 @@ class PrinterTests extends AnyFreeSpec with Matchers {
 
   "Drop null keys" in {
     val json = Json.obj("nullField" -> Json.Null, "nonNullField" -> Json.fromString("foo"))
-    Printer.pretty(json) shouldEqual "nullField: null\nnonNullField: \"foo\"\n"
+    Printer.pretty(json) shouldEqual "nullField: !!null\nnonNullField: \"foo\"\n"
   }
 
   "Root integer" in {

project/plugins.sbt

@@ -1,4 +1,4 @@
 addSbtPlugin("io.circe" % "sbt-circe-org" % "0.4.1")
-addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.2")
+addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.4")
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.16.0")
 addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.12.1")