Refactor Annotations (#721)

- Old Annotation renamed to deprecated LegacyAnnotation
- Annotation is now a trait that can be extended
- New JsonProtocol for Annotation [de]serialization
- Replace AnnotationMap with AnnotationSeq
- Deprecate Transform.getMyAnnotations
- Update Transforms
- Turn on deprecation warnings
- Remove deprecated Driver.compile
- Make AnnotationTests abstract with Legacy and Json subclasses
- Add functionality to convert LegacyAnnotations of built-in annos
This will give a noisy warning and is more of a best effort than a
robust solution.

Fixes #475 Closes #609

1 files changed, 7 insertions, 6 deletions

diff --git a/src/main/scala/firrtl/annotations/AnnotationYamlProtocol.scala b/src/main/scala/firrtl/annotations/AnnotationYamlProtocol.scala
index 9018d494..e0337d6e 100644
--- a/src/main/scala/firrtl/annotations/AnnotationYamlProtocol.scala
+++ b/src/main/scala/firrtl/annotations/AnnotationYamlProtocol.scala
@@ -7,23 +7,24 @@ import net.jcazevedo.moultingyaml._
 
 object AnnotationYamlProtocol extends DefaultYamlProtocol {
   // bottom depends on top
-  implicit object AnnotationYamlFormat extends YamlFormat[Annotation] {
-    def write(a: Annotation) = YamlObject(
+  implicit object AnnotationYamlFormat extends YamlFormat[LegacyAnnotation] {
+    def write(a: LegacyAnnotation) = YamlObject(
       YamlString("targetString") -> YamlString(a.targetString),
       YamlString("transformClass") -> YamlString(a.transformClass),
       YamlString("value") -> YamlString(a.value)
     )
 
-    def read(yamlValue: YamlValue): Annotation = {
+    def read(yamlValue: YamlValue): LegacyAnnotation = {
       try {
         yamlValue.asYamlObject.getFields(
           YamlString("targetString"),
           YamlString("transformClass"),
           YamlString("value")) match {
           case Seq(YamlString(targetString), YamlString(transformClass), YamlString(value)) =>
-            Annotation(
-              toTarget(targetString), Class.forName(transformClass).asInstanceOf[Class[_ <: Transform]], value)
-          case _ => deserializationError("Annotation expected")
+            LegacyAnnotation(toTarget(targetString),
+                             Class.forName(transformClass).asInstanceOf[Class[_ <: Transform]],
+                             value)
+          case _ => deserializationError("LegacyAnnotation expected")
         }
       }
       catch {