Move scala-xml related code to separate module

build.sbt

@@ -53,7 +53,8 @@ val moduleCrossPlatformMatrix = Map(
   "scalaz" -> List(JVMPlatform, JSPlatform, NativePlatform),
   "scodec" -> List(JVMPlatform, JSPlatform),
   "scopt" -> List(JVMPlatform, JSPlatform),
-  "shapeless" -> List(JVMPlatform, JSPlatform, NativePlatform)
+  "shapeless" -> List(JVMPlatform, JSPlatform, NativePlatform),
+  "scalaxml" -> List(JVMPlatform, JSPlatform, NativePlatform)
 )
 
 def allSubprojectsOf(platform: sbtcrossproject.Platform): List[String] =
@@ -71,7 +72,7 @@ val Scala213 = "2.13.0-M5"
 val moduleCrossScalaVersionsMatrix: (String, Platform) => List[String] = {
   case (_, NativePlatform) =>
     List(Scala211)
-  case ("cats" | "core" | "scalacheck" | "scalaz" | "shapeless", _) =>
+  case ("cats" | "core" | "scalacheck" | "scalaz" | "shapeless" | "scalaxml", _) =>
     List(Scala211, Scala212, Scala213)
   case _ =>
     List(Scala211, Scala212)
@@ -119,7 +120,6 @@ lazy val core = myCrossProject("core")
       scalaOrganization.value % "scala-reflect" % scalaVersion.value,
       scalaOrganization.value % "scala-compiler" % scalaVersion.value,
       "com.chuusai" %%% "shapeless" % shapelessVersion,
-      "org.scala-lang.modules" %% "scala-xml" % scalaXmlVersion,
       scalaCheckDep.value % Test
     ),
     initialCommands += s"""
@@ -262,6 +262,16 @@ lazy val shapelessJVM = shapeless.jvm
 lazy val shapelessJS = shapeless.js
 lazy val shapelessNative = shapeless.native
 
+lazy val scalaxml = myCrossProject("scalaxml")
+  .dependsOn(core % "compile->compile;test->test")
+  .settings(
+    libraryDependencies += "org.scala-lang.modules" %% "scala-xml" % scalaXmlVersion
+  )
+
+lazy val scalaxmlJVM = scalaxml.jvm
+lazy val scalaxmlJS = scalaxml.js
+lazy val scalaxmlNative = scalaxml.native
+
 /// settings
 
 lazy val commonSettings = Def.settings(
@@ -330,7 +340,15 @@ def moduleJvmSettings(name: String): Seq[Def.Setting[_]] = Def.settings(
   mimaBinaryIssueFilters ++= {
     import com.typesafe.tools.mima.core._
     Seq(
-      )
+      ProblemFilters.exclude[MissingClassProblem]("eu.timepit.refined.string$Xml$"),
+      ProblemFilters.exclude[MissingClassProblem]("eu.timepit.refined.string$Xml"),
+      ProblemFilters
+        .exclude[DirectMissingMethodProblem]("eu.timepit.refined.predicates.StringPredicates.Xml"),
+      ProblemFilters.exclude[DirectMissingMethodProblem]("eu.timepit.refined.predicates.all.Xml"),
+      ProblemFilters
+        .exclude[DirectMissingMethodProblem]("eu.timepit.refined.predicates.string.Xml"),
+      ProblemFilters.exclude[DirectMissingMethodProblem]("eu.timepit.refined.util.string.xml")
+    )
   }
 )
 

latestVersion.sbt

@@ -9,4 +9,5 @@ bincompatVersions in ThisBuild := Set(
 unreleasedModules in ThisBuild := Set(
   // Example:
   // "refined-eval"
+  "refined-scalaxml"
 )

modules/core/jvm/src/test/scala/eu/timepit/refined/StringUtilSpecJvm.scala

@@ -17,15 +17,6 @@ class StringUtilSpecJvm extends Properties("util.string") {
     true
   }
 
-  property("xml success") = secure {
-    xml("<root></root>") == scala.xml.XML.loadString("<root></root>")
-  }
-
-  property("xml failure") = secure {
-    illTyped("""xml("<root>")""", "Xml predicate failed.*")
-    true
-  }
-
   property("xpath success") = secure {
     xpath("A//B/*[1]")
     true

modules/core/jvm/src/test/scala/eu/timepit/refined/StringValidateSpecJvm.scala

@@ -21,15 +21,6 @@ class StringValidateSpecJvm extends Properties("StringValidate") {
     showResult[Url]("htp://example.com") ?= "Url predicate failed: unknown protocol: htp"
   }
 
-  property("Xml.isValid") = secure {
-    isValid[Xml]("<root></root>")
-  }
-
-  property("Xml.showResult") = secure {
-    showResult[Xml]("<root>") ?=
-      "Xml predicate failed: XML document structures must start and end within the same entity."
-  }
-
   property("XPath.isValid") = secure {
     isValid[XPath]("A//B/*[1]")
   }

modules/core/shared/src/main/scala/eu/timepit/refined/predicates/string.scala

@@ -47,9 +47,6 @@ trait StringPredicates {
   final type ValidBigDecimal = refined.string.ValidBigDecimal
   final val ValidBigDecimal = refined.string.ValidBigDecimal
 
-  final type Xml = refined.string.Xml
-  final val Xml = refined.string.Xml
-
   final type XPath = refined.string.XPath
   final val XPath = refined.string.XPath
 }

modules/core/shared/src/main/scala/eu/timepit/refined/string.scala

@@ -63,9 +63,6 @@ object string extends StringInference {
   /** Predicate that checks if a `String` is a parsable `BigDecimal`. */
   final case class ValidBigDecimal()
 
-  /** Predicate that checks if a `String` is well-formed XML. */
-  final case class Xml()
-
   /** Predicate that checks if a `String` is a valid XPath expression. */
   final case class XPath()
 
@@ -230,11 +227,6 @@ object string extends StringInference {
       Validate.fromPartial(BigDecimal(_), "ValidBigDecimal", ValidBigDecimal())
   }
 
-  object Xml {
-    implicit def xmlValidate: Validate.Plain[String, Xml] =
-      Validate.fromPartial(scala.xml.XML.loadString, "Xml", Xml())
-  }
-
   object XPath {
     implicit def xpathValidate: Validate.Plain[String, XPath] =
       Validate.fromPartial(

modules/core/shared/src/main/scala/eu/timepit/refined/util/string.scala

@@ -43,10 +43,6 @@ object string {
   def uuid(s: String Refined Uuid): java.util.UUID =
     java.util.UUID.fromString(s.value)
 
-  /** Creates a `scala.xml.Elem` from a validated string. */
-  def xml(s: String Refined Xml): scala.xml.Elem =
-    scala.xml.XML.loadString(s.value)
-
   /** Creates a `javax.xml.xpath.XPathExpression` from a validated string. */
   def xpath(s: String Refined XPath): javax.xml.xpath.XPathExpression =
     javax.xml.xpath.XPathFactory.newInstance().newXPath().compile(s.value)

modules/scalaxml/jvm/src/main/scala/eu/timepit/refined/scalaxml/string.scala

@@ -0,0 +1,14 @@
+package eu.timepit.refined.scalaxml
+
+import eu.timepit.refined.api.Validate
+
+object string {
+
+  /** Predicate that checks if a `String` is well-formed XML. */
+  final case class Xml()
+
+  object Xml {
+    implicit def xmlValidate: Validate.Plain[String, Xml] =
+      Validate.fromPartial(scala.xml.XML.loadString, "Xml", Xml())
+  }
+}

modules/scalaxml/jvm/src/main/scala/eu/timepit/refined/scalaxml/util.scala

@@ -0,0 +1,11 @@
+package eu.timepit.refined.scalaxml
+
+import eu.timepit.refined.api.Refined
+import eu.timepit.refined.scalaxml.string.Xml
+
+object util {
+
+  /** Creates a `scala.xml.Elem` from a validated string. */
+  def xml(s: String Refined Xml): scala.xml.Elem =
+    scala.xml.XML.loadString(s.value)
+}

modules/scalaxml/jvm/src/test/scala/eu/timepit/refined/scalaxml/XmlUtilSpecJvm.scala

@@ -0,0 +1,19 @@
+package eu.timepit.refined.scalaxml
+
+import eu.timepit.refined.auto._
+import eu.timepit.refined.scalaxml.util._
+import org.scalacheck.Prop._
+import org.scalacheck.Properties
+import shapeless.test.illTyped
+
+class XmlUtilSpecJvm extends Properties("scalaxml.util.string") {
+
+  property("xml success") = secure {
+    xml("<root></root>") == scala.xml.XML.loadString("<root></root>")
+  }
+
+  property("xml failure") = secure {
+    illTyped("""xml("<root>")""", "Xml predicate failed.*")
+    true
+  }
+}

modules/scalaxml/jvm/src/test/scala/eu/timepit/refined/scalaxml/XmlValidateSpecJvm.scala

@@ -0,0 +1,17 @@
+package eu.timepit.refined.scalaxml
+
+import eu.timepit.refined.TestUtils._
+import eu.timepit.refined.scalaxml.string._
+import org.scalacheck.Prop._
+import org.scalacheck.Properties
+
+class XmlValidateSpecJvm extends Properties("XmlValidate") {
+  property("Xml.isValid") = secure {
+    isValid[Xml]("<root></root>")
+  }
+
+  property("Xml.showResult") = secure {
+    showResult[Xml]("<root>") ?=
+      "Xml predicate failed: XML document structures must start and end within the same entity."
+  }
+}