Add chisel3.stage.ChiselStage

This adds ChiselStage, a reimplementation of chisel3.Driver as a
firrtl.options.Stage. This is simplistically described as a pipeline
of Phases.

Co-Authored-By: Schuyler Eldridge <schuyler.eldridge@ibm.com>
Co-Authored-By: chick <chick@qrhino.com>
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/src/main/scala/chisel3/stage/ChiselStage.scala b/src/main/scala/chisel3/stage/ChiselStage.scala
new file mode 100644
index 00000000..1e92aaf6
--- /dev/null
+++ b/src/main/scala/chisel3/stage/ChiselStage.scala
@@ -0,0 +1,26 @@
+// See LICENSE for license details.
+
+package chisel3.stage
+
+import firrtl.AnnotationSeq
+import firrtl.options.{Phase, Shell, Stage}
+import firrtl.stage.FirrtlCli
+
+class ChiselStage extends Stage {
+  val shell: Shell = new Shell("chisel") with ChiselCli with FirrtlCli
+
+  private val phases: Seq[Phase] =
+    Seq( new chisel3.stage.phases.Checks,
+         new chisel3.stage.phases.Elaborate,
+         new chisel3.stage.phases.AddImplicitOutputFile,
+         new chisel3.stage.phases.AddImplicitOutputAnnotationFile,
+         new chisel3.stage.phases.Emitter,
+         new chisel3.stage.phases.Convert,
+         new chisel3.stage.phases.MaybeFirrtlStage )
+      .map(firrtl.options.phases.DeletedWrapper(_))
+
+  def run(annotations: AnnotationSeq): AnnotationSeq =
+    /* @todo: Should this be wrapped in a try/catch? */
+    phases.foldLeft(annotations)( (a, f) => f.transform(a) )
+
+}