fix #754: XML codec implemented

Author: shruti2522

build.sbt

@@ -110,6 +110,9 @@ lazy val root = project
     zioSchemaAvro,
     zioSchemaBson,
     zioSchemaMsgPack,
+    zioSchemaXmlJS,
+    zioSchemaXmlJVM,
+    zioSchemaXml.native,
     docs
   )
 
@@ -296,6 +299,57 @@ lazy val zioSchemaProtobufJS = zioSchemaProtobuf.js
 
 lazy val zioSchemaProtobufJVM = zioSchemaProtobuf.jvm
 
+lazy val zioSchemaXml = crossProject(JSPlatform, JVMPlatform, NativePlatform)
+  .in(file("zio-schema-xml"))
+  .dependsOn(zioSchema, zioSchemaDerivation, tests % "test->test")
+  .settings(stdSettings("zio-schema-xml"))
+  .settings(dottySettings)
+  .settings(crossProjectSettings)
+  .settings(buildInfoSettings("zio.schema.xml"))
+  .settings(
+    libraryDependencies ++= Seq(
+      "org.scala-lang.modules" %%% "scala-xml" % scalaXmlVersion
+    )
+  )
+  .jvmSettings(
+    libraryDependencies ++= {
+      if (scalaVersion.value.startsWith("3.")) {
+        Seq(
+          "org.scala-lang.modules" %% "scala-parser-combinators" % "2.4.0"         % Test,
+          "javax.xml.bind"         % "jaxb-api"                  % "2.3.1"         % Test,
+          "org.scala-lang.modules" %% "scala-xml"                % scalaXmlVersion % Test
+        )
+      } else {
+        Seq(
+          "org.scalaxb"            %% "scalaxb"                  % "1.11.1"        % Test,
+          "org.scala-lang.modules" %% "scala-parser-combinators" % "2.4.0"         % Test,
+          "javax.xml.bind"         % "jaxb-api"                  % "2.3.1"         % Test,
+          "org.scala-lang.modules" %% "scala-xml"                % scalaXmlVersion % Test
+        )
+      }
+    }
+  )
+  .nativeSettings(
+    Test / fork := false,
+    libraryDependencies ++= Seq(
+      "io.github.cquiroz" %%% "scala-java-time" % scalaJavaTimeVersion
+    )
+  )
+  .jsSettings(
+    libraryDependencies ++= Seq(
+      "io.github.cquiroz" %%% "scala-java-time"      % scalaJavaTimeVersion,
+      "io.github.cquiroz" %%% "scala-java-time-tzdb" % scalaJavaTimeVersion
+    )
+  )
+  .settings(testDeps)
+  .settings(
+    mimaPreviousArtifacts := Set()
+  )
+
+lazy val zioSchemaXmlJS     = zioSchemaXml.js
+lazy val zioSchemaXmlJVM    = zioSchemaXml.jvm
+lazy val zioSchemaXmlNative = zioSchemaXml.native
+
 lazy val zioSchemaThrift = project
   .in(file("zio-schema-thrift"))
   .dependsOn(zioSchema.jvm, zioSchemaDerivation.jvm, tests.jvm % "test->test")
@@ -480,7 +534,8 @@ lazy val docs = project
     zioSchemaAvro,
     zioSchemaBson,
     zioSchemaMsgPack,
-    zioSchemaThrift
+    zioSchemaThrift,
+    zioSchemaXmlJVM
   )
   .enablePlugins(WebsitePlugin)
 

project/BuildHelper.scala

@@ -47,6 +47,7 @@ object BuildHelper {
   val thriftVersion                = "0.22.0"
   val javaxAnnotationApiVersion    = "3.0.0"
   val scalaJavaTimeVersion         = "2.6.0"
+  val scalaXmlVersion              = "2.4.0"
 
   def macroDefinitionSettings = Seq(
     scalacOptions += "-language:experimental.macros",

project/plugins.sbt

@@ -12,5 +12,6 @@ addSbtPlugin("pl.project13.scala" % "sbt-jmh"                       % "0.4.8")
 addSbtPlugin("dev.zio"            % "zio-sbt-website"               % "0.4.10")
 addSbtPlugin("com.typesafe"       % "sbt-mima-plugin"               % "1.1.4")
 addSbtPlugin("org.scoverage"      % "sbt-scoverage"                 % "2.4.4")
+addSbtPlugin("org.scalaxb"        % "sbt-scalaxb"                   % "1.12.1")
 
 libraryDependencies += "org.snakeyaml" % "snakeyaml-engine" % "3.0.1"

zio-schema-xml/shared/src/main/scala/zio/schema/codec/XmlAnnotations.scala

@@ -0,0 +1,24 @@
+package zio.schema.codec
+
+import scala.annotation.StaticAnnotation
+
+object XmlAnnotations {
+
+  final case class name(name: String) extends StaticAnnotation
+
+  final case class namespace(uri: String) extends StaticAnnotation
+
+  final case class namespacePrefix(prefix: String) extends StaticAnnotation
+
+  final case class attribute() extends StaticAnnotation
+
+  final case class text() extends StaticAnnotation
+
+  final case class wrapped() extends StaticAnnotation
+
+  final case class collectionElement(name: String) extends StaticAnnotation
+
+  final case class cdata() extends StaticAnnotation
+
+  final case class omitEmpty() extends StaticAnnotation
+}