factor out buildinfo into plugin

1 files changed, 29 insertions, 0 deletions

diff --git a/stage2/plugins/GenerateBuildInfo.scala b/stage2/plugins/GenerateBuildInfo.scala
new file mode 100644
index 0000000..f9c2aff
--- /dev/null
+++ b/stage2/plugins/GenerateBuildInfo.scala
@@ -0,0 +1,29 @@
+package cbt
+import java.io.File
+trait GenerateBuildInfo extends BaseBuild{
+  override def compile = { buildInfo.apply; super.compile }
+  def buildInfo = GenerateBuildInfo.apply( lib ).config(
+    s"""
+  def scalaVersion = "$scalaVersion"
+""",
+    None,
+    "BuildInfo",
+    projectDirectory / "src_generated"
+  )
+}
+object GenerateBuildInfo{
+  case class apply( lib: Lib ){
+    case class config( body: String, `package`: Option[String], className: String, file: File ){
+      def apply = {
+        lib.writeIfChanged(
+          file / className ++ ".scala",
+          s"""// generated file${`package`.map("\npackage "++_++"").getOrElse("")}
+object $className{
+  $body
+}
+"""
+        )
+      }
+    }
+  }
+}