add label and comment show

src/main/scala/com/htmlism/mos6502/dsl/BitField.scala

@@ -6,4 +6,14 @@ trait BitField[A] {
   def comment: String
 
   def labels: NonEmptyList[String]
+
+  /**
+   * ASM-safe label
+   */
+  def label(x: A): String
+
+  /**
+   * Comment string
+   */
+  def comment(x: A): String
 }

src/main/scala/com/htmlism/mos6502/dsl/EnumAsm.scala

@@ -6,4 +6,14 @@ trait EnumAsm[A] {
   def comment: String
 
   def labels: NonEmptyList[String]
+
+  /**
+   * ASM-safe label
+   */
+  def label(x: A): String
+
+  /**
+   * Comment string
+   */
+  def comment(x: A): String
 }

src/test/scala/com/htmlism/mos6502/dsl/DslSpec.scala

@@ -117,6 +117,12 @@ object Foo {
 
       def labels: NonEmptyList[String] =
         NonEmptyList.of("courage", "wisdom", "power")
+
+      def label(x: Foo): String =
+        "fooNotEnum"
+
+      def comment(x: Foo): String =
+        "Foo not an enum"
     }
 
   implicit val bitFieldFoo: BitField[Foo] =
@@ -127,5 +133,10 @@ object Foo {
       def labels: NonEmptyList[String] =
         NonEmptyList.of("up", "down", "left", "right")
 
+      def label(x: Foo): String =
+        "fooNotBitField"
+
+      def comment(x: Foo): String =
+        "Foo not a bit field"
     }
 }