Added option to emit final annotations (#649)

* Added option to emit final annotations

* Removed extra > from output-anno-file

* Removed other extra > from input-anno-file

2 files changed, 24 insertions, 2 deletions

diff --git a/src/main/scala/firrtl/Driver.scala b/src/main/scala/firrtl/Driver.scala
index 1f0741fd..76a2e4f8 100644
--- a/src/main/scala/firrtl/Driver.scala
+++ b/src/main/scala/firrtl/Driver.scala
@@ -202,6 +202,18 @@ object Driver {
           "" // Should we return something different here?
       }
 
+      // If set, emit final annotations to a file
+      optionsManager.firrtlOptions.outputAnnotationFileName match {
+        case "" =>
+        case file =>
+          val filename = optionsManager.getBuildFileName("anno", file)
+          val outputFile = new java.io.PrintWriter(filename)
+          finalState.annotations.map {
+            case annos => outputFile.write(annos.annotations.mkString("\n"))
+          }
+          outputFile.close()
+      }
+
       FirrtlExecutionSuccess(firrtlConfig.compilerName, emittedRes)
     }
   }
diff --git a/src/main/scala/firrtl/ExecutionOptionsManager.scala b/src/main/scala/firrtl/ExecutionOptionsManager.scala
index 8aa23f70..e0bd1975 100644
--- a/src/main/scala/firrtl/ExecutionOptionsManager.scala
+++ b/src/main/scala/firrtl/ExecutionOptionsManager.scala
@@ -155,6 +155,7 @@ case class FirrtlExecutionOptions(
     customTransforms:       Seq[Transform] = List.empty,
     annotations:            List[Annotation] = List.empty,
     annotationFileNameOverride: String = "",
+    outputAnnotationFileName: String = "",
     forceAppendAnnoFile:    Boolean = false,
     emitOneFilePerModule:   Boolean = false,
     dontCheckCombLoops:     Boolean = false,
@@ -283,8 +284,8 @@ trait HasFirrtlOptions {
 
   parser.opt[String]("annotation-file")
     .abbr("faf")
-    .valueName ("<output>").
-    foreach { x =>
+    .valueName ("<input-anno-file>")
+    .foreach { x =>
       firrtlOptions = firrtlOptions.copy(annotationFileNameOverride = x)
     }.text {
     "use this to override the default annotation file name, default is empty"
@@ -298,6 +299,15 @@ trait HasFirrtlOptions {
       "use this to force appending annotation file to annotations being passed in through optionsManager"
     }
 
+  parser.opt[String]("output-annotation-file")
+    .abbr("foaf")
+    .valueName ("<output-anno-file>")
+    .foreach { x =>
+      firrtlOptions = firrtlOptions.copy(outputAnnotationFileName = x)
+    }.text {
+    "use this to set the annotation output file"
+  }
+
   parser.opt[String]("compiler")
     .abbr("X")
     .valueName ("<high|middle|low|verilog>")