def get_property(self, prop_name, **kwargs):
        """
        Gets the SystemRDL component property

        If a property was not explicitly set in the RDL source, its default
        value is derived. In some cases, a default value is implied according to
        other property values.

        Properties values that are a reference to a component instance are
        converted to a :class:`~Node` overlay object.

        Parameters
        ----------
        prop_name: str
            SystemRDL property name
        default:
            Override built-in default value of property.
            If the property was not explicitly set, return this value rather than
            the property's intrinsic default value.

        Raises
        ------
        LookupError
            If prop_name is invalid
        """

        ovr_default = False
        default = None
        if 'default' in kwargs:
            ovr_default = True
            default = kwargs.pop('default')

        # Check for stray kwargs
        if kwargs:
            raise TypeError("got an unexpected keyword argument '%s'" % list(kwargs.keys())[0])

        # If its already in the component, then safe to bypass checks
        if prop_name in self.inst.properties:
            prop_value = self.inst.properties[prop_name]

            if isinstance(prop_value, rdltypes.ComponentRef):
                # If this is a hierarchical component reference, convert it to a Node reference
                prop_value = prop_value.build_node_ref(self, self.env)
            if isinstance(prop_value, rdltypes.PropertyReference):
                prop_value._resolve_node(self)

            return prop_value

        if ovr_default:
            # Default value is being overridden by user. Return their value
            return default

        # Otherwise, return its default value based on the property's rules
        rule = self.env.property_rules.lookup_property(prop_name)

        # Is it even a valid property or allowed for this component type?
        if rule is None:
            raise LookupError("Unknown property '%s'" % prop_name)
        if type(self.inst) not in rule.bindable_to:
            raise LookupError("Unknown property '%s'" % prop_name)

        # Return the default value as specified by the rulebook
        return rule.get_default(self)
def get_property ( self , prop_name , ** kwargs ) : ovr_default = False default = None if 'default' in kwargs : ovr_default = True default = kwargs . pop ( 'default' ) if kwargs : raise TypeError ( "got an unexpected keyword argument '%s'" % list ( kwargs . keys ( ) ) [ 0 ] ) if prop_name in self . inst . properties : prop_value = self . inst . properties [ prop_name ] if isinstance ( prop_value , rdltypes . ComponentRef ) : prop_value = prop_value . build_node_ref ( self , self . env ) if isinstance ( prop_value , rdltypes . PropertyReference ) : prop_value . _resolve_node ( self ) return prop_value if ovr_default : return default rule = self . env . property_rules . lookup_property ( prop_name ) if rule is None : raise LookupError ( "Unknown property '%s'" % prop_name ) if type ( self . inst ) not in rule . bindable_to : raise LookupError ( "Unknown property '%s'" % prop_name ) return rule . get_default ( self )
Gets the SystemRDL component property

        If a property was not explicitly set in the RDL source, its default
        value is derived. In some cases, a default value is implied according to
        other property values.

        Properties values that are a reference to a component instance are
        converted to a :class:`~Node` overlay object.

        Parameters
        ----------
        prop_name: str
            SystemRDL property name
        default:
            Override built-in default value of property.
            If the property was not explicitly set, return this value rather than
            the property's intrinsic default value.

        Raises
        ------
        LookupError
            If prop_name is invalid