Move Abstract into its own file

masque/builder/builder.py

@@ -14,6 +14,7 @@ from ..error import PortError, BuildError
 from ..ports import PortList, Port
 from .tools import Tool
 from .utils import ell
+from .abstract import Abstract
 
 
 logger = logging.getLogger(__name__)
@@ -22,50 +23,6 @@ logger = logging.getLogger(__name__)
 BB  = TypeVar('BB',  bound='Builder')
 
 
-class Abstract(PortList):
-    __slots__ = ('name', 'ports')
-
-    name: str
-    """ Name of the pattern this device references """
-
-    ports: Dict[str, Port]
-    """ Uniquely-named ports which can be used to snap instances together"""
-
-    def __init__(
-            self,
-            name: str,
-            ports: Dict[str, Port],
-            ) -> None:
-        self.name = name
-        self.ports = copy.deepcopy(ports)
-
-    def build(
-            self,
-            library: MutableLibrary,
-            tools: Union[None, Tool, MutableMapping[Optional[str], Tool]] = None,
-            ) -> 'Builder':
-        """
-        Begin building a new device around an instance of the current device
-          (rather than modifying the current device).
-
-        Returns:
-            The new `Builder` object.
-        """
-        pat = Pattern(ports=self.ports)
-        pat.ref(self.name)
-        new = Builder(library=library, pattern=pat, tools=tools)   # TODO should Ref have tools?
-        return new
-
-    # TODO do we want to store a Ref instead of just a name? then we can translate/rotate/mirror...
-
-    def __repr__(self) -> str:
-        s = f'<Abstract {self.name} ['
-        for name, port in self.ports.items():
-            s += f'\n\t{name}: {port}'
-        s += ']>'
-        return s
-
-
 class Builder(PortList):
     """
     TODO DOCUMENT Builder