sim/gtkwave: Update/fix SignalNamespace import (And make it public in…

… fhdl/namer).

litex/build/sim/gtkwave.py

@@ -11,7 +11,7 @@
 
 from migen import *
 
-from litex.gen.fhdl.namer import Namespace
+from litex.gen.fhdl.namer import SignalNamespace
 
 from litex.soc.interconnect import stream
 
@@ -52,7 +52,7 @@ class GTKWSave:
     """
 
     def __init__(self,
-            vns: Namespace,
+            vns: SignalNamespace,
             savefile: str,
             dumpfile: str,
             filtersdir: str = None,
@@ -62,7 +62,7 @@ def __init__(self,
 
         `prefix` is prepended to all signal names and defaults to the one used by Litex simulator.
         """
-        self.vns = vns   # Namespace output of Builder.build, required to resolve signal names
+        self.vns = vns   # SignalNamespace output of Builder.build, required to resolve signal names
         self.prefix = prefix
         self.savefile = savefile
         self.dumpfile = dumpfile

litex/gen/fhdl/namer.py

@@ -386,7 +386,7 @@ def _build_signal_name_dict(signals):
 
 # Signal Namespace Class ---------------------------------------------------------------------------
 
-class _SignalNamespace:
+class SignalNamespace:
     """
     A _SignalNamespace object manages unique naming for signals within a hardware design.
 
@@ -463,14 +463,14 @@ def build_signal_namespace(signals, reserved_keywords=set()):
         reserved_keywords (set, optional): A set of keywords that cannot be used as signal names.
 
     Returns:
-        Namespace: An object that contains the mapping of signals to unique names and provides methods to access them.
+        SignalNamespace: An object that contains the mapping of signals to unique names and provides methods to access them.
     """
 
     # Create the primary signal-to-name dictionary.
     pnd = _build_signal_name_dict(signals)
 
     # Initialize the namespace with reserved keywords and the primary mapping.
-    namespace = _SignalNamespace(pnd, reserved_keywords)
+    namespace = SignalNamespace(pnd, reserved_keywords)
 
     # Handle signals with overridden names, ensuring they are processed in a consistent order.
     signals_with_name_override = filter(lambda s: s.name_override is not None, signals)