Improve desiredName for nested objects/classes

Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>

Author: seldridge

chiselFrontend/src/main/scala/chisel3/Module.scala

@@ -221,7 +221,7 @@ package experimental {
     /** Desired name of this module. Override this to give this module a custom, perhaps parametric,
       * name.
       */
-    def desiredName: String = this.getClass.getName.split('.').last
+    def desiredName: String = this.getClass.getName.split("\\.|\\$").last
 
     /** Legalized name of this module. */
     final lazy val name = try {

src/test/scala/chiselTests/DataPrint.scala

@@ -33,23 +33,23 @@ class DataPrintSpec extends ChiselFlatSpec with Matchers {
   }
 
   class BoundDataModule extends MultiIOModule {  // not in the test to avoid anon naming suffixes
-    Wire(UInt()).toString should be("UInt(Wire in DataPrintSpec$BoundDataModule)")
-    Reg(SInt()).toString should be("SInt(Reg in DataPrintSpec$BoundDataModule)")
+    Wire(UInt()).toString should be("UInt(Wire in BoundDataModule)")
+    Reg(SInt()).toString should be("SInt(Reg in BoundDataModule)")
     val io = IO(Output(Bool()))  // needs a name so elaboration doesn't fail
-    io.toString should be("Bool(IO in unelaborated DataPrintSpec$BoundDataModule)")
+    io.toString should be("Bool(IO in unelaborated BoundDataModule)")
     val m = Mem(4, UInt(2.W))
-    m(2).toString should be("UInt<2>(MemPort in DataPrintSpec$BoundDataModule)")
-    (2.U + 2.U).toString should be("UInt<2>(OpResult in DataPrintSpec$BoundDataModule)")
-    Wire(Vec(3, UInt(2.W))).toString should be ("UInt<2>[3](Wire in DataPrintSpec$BoundDataModule)")
+    m(2).toString should be("UInt<2>(MemPort in BoundDataModule)")
+    (2.U + 2.U).toString should be("UInt<2>(OpResult in BoundDataModule)")
+    Wire(Vec(3, UInt(2.W))).toString should be ("UInt<2>[3](Wire in BoundDataModule)")
 
     class InnerModule extends MultiIOModule {
       val io = IO(Output(new Bundle {
         val a = UInt(4.W)
       }))
     }
     val inner = Module(new InnerModule)
-    inner.clock.toString should be ("Clock(IO clock in DataPrintSpec$BoundDataModule$InnerModule)")
-    inner.io.a.toString should be ("UInt<4>(IO io_a in DataPrintSpec$BoundDataModule$InnerModule)")
+    inner.clock.toString should be ("Clock(IO clock in InnerModule)")
+    inner.io.a.toString should be ("UInt<4>(IO io_a in InnerModule)")
   }
 
   "Bound data types" should "have a meaningful string representation" in {