create and extend annotatable BaseSim class for verification nodes (#1968)

* prototype annotating verif constructs

* switch to final class

* name emissions

* moving BaseSim to experimental

* adding name tests

* fixing quotation escapes

* emitting names, but everything has a default name

* only name things with provided/suggested names

* name every BaseSim node

* removing msg, unused imports

* fixing file exist calls

1 files changed, 6 insertions, 0 deletions

diff --git a/core/src/main/scala/chisel3/experimental/package.scala b/core/src/main/scala/chisel3/experimental/package.scala
index e8360430..8018159f 100644
--- a/core/src/main/scala/chisel3/experimental/package.scala
+++ b/core/src/main/scala/chisel3/experimental/package.scala
@@ -2,6 +2,7 @@
 
 package chisel3
 
+import chisel3.internal.NamedComponent
 import chisel3.internal.sourceinfo.SourceInfo
 
 /** Package for experimental features, which may have their API changed, be removed, etc.
@@ -165,4 +166,9 @@ package object experimental {
   val prefix = chisel3.internal.prefix
   // Use to remove prefixes not in provided scope
   val noPrefix = chisel3.internal.noPrefix
+
+  /** Base simulation-only component. */
+  abstract class BaseSim extends NamedComponent {
+    _parent.foreach(_.addId(this))
+  }
 }