Remove setter for signals source and destination since they shouldn't be modified.

b_asic/port.py

@@ -99,6 +99,9 @@ class InputPort(Port):
         return 0 if self._signal is None else 1
 
     def connect(self, port: "OutputPort") -> sig.Signal:
+        # Remove previously connected signal if there is one
+        if self._signal is not None:
+            self.disconnect()
         self._signal = sig.Signal(port, self)
         return self._signal
 

b_asic/signal.py

@@ -32,42 +32,20 @@ class Signal(AbstractGraphComponent):
         """Returns the destination InputPort of the signal."""
         return self._destination
 
-    @source.setter
-    def source(self, src: OutputPort) -> None:
-        """Sets the value of the source OutputPort of the signal.
-        
-        Note: Does not connect the src OutputPort to the signal.
-        
-        Keyword arguments:
-        - src: OutPort to connect as source to the signal.
-        """
-        self._source = src
-
-    @destination.setter
-    def destination(self, dest: InputPort) -> None:
-        """Sets the value of the destination InputPort of the signal.
-        
-        Note: Does not connect the destination InputPort to the signal.
-        
-        Keywords argments:
-        - dest: InputPort to connect as destination to the signal.
-        """
-        self._destination = dest
-
     @property
     def type_name(self) -> TypeName:
         return "s"
 
     def disconnect_source(self) -> None:
         """Disconnects the source OutputPort of the signal.
-        
+
         Note: Does not disconnect the source OutputPort from the signal.
         """
         self._source = None
 
     def disconnect_destination(self) -> None:
         """Disconnects the destination InputPort of the signal.
-        
+
         Note: Does not disconnect the destination OutputPort from the signal.
         """
         self._destination = None