1 files changed, 39 insertions, 0 deletions
diff --git a/plugin/src/main/scala/chisel3/internal/plugin/ChiselPlugin.scala b/plugin/src/main/scala/chisel3/internal/plugin/ChiselPlugin.scala
new file mode 100644
index 00000000..23082329
--- /dev/null
+++ b/plugin/src/main/scala/chisel3/internal/plugin/ChiselPlugin.scala
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: Apache-2.0
+
+package chisel3.internal.plugin
+
+import scala.tools.nsc
+import nsc.Global
+import nsc.plugins.{Plugin, PluginComponent}
+import scala.reflect.internal.util.NoPosition
+
+private[plugin] case class ChiselPluginArguments(var useBundlePlugin: Boolean = true) {
+  def useBundlePluginOpt = "useBundlePlugin"
+  def useBundlePluginFullOpt = s"-P:chiselplugin:$useBundlePluginOpt"
+}
+
+// The plugin to be run by the Scala compiler during compilation of Chisel code
+class ChiselPlugin(val global: Global) extends Plugin {
+  val name = "chiselplugin"
+  val description = "Plugin for Chisel 3 Hardware Description Language"
+  private val arguments = ChiselPluginArguments()
+  val components: List[PluginComponent] = List[PluginComponent](
+    new ChiselComponent(global),
+    new BundleComponent(global, arguments)
+  )
+
+  override def init(options: List[String], error: String => Unit): Boolean = {
+    for (option <- options) {
+      if (option == arguments.useBundlePluginOpt) {
+        val msg = s"'${arguments.useBundlePluginFullOpt}' is now default behavior, you can stop using the scalacOption."
+        global.reporter.warning(NoPosition, msg)
+      } else {
+        error(s"Option not understood: '$option'")
+      }
+    }
+    true
+  }
+
+
+}
+