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556 lines
21 KiB
Python
556 lines
21 KiB
Python
from typing import Self, Sequence, Mapping, Literal, overload
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import copy
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import logging
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from numpy import pi
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from numpy.typing import ArrayLike
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from ..pattern import Pattern
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from ..ref import Ref
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from ..library import ILibrary
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from ..error import PortError, BuildError
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from ..ports import PortList, Port
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from ..abstract import Abstract
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logger = logging.getLogger(__name__)
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class Builder(PortList):
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"""
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TODO DOCUMENT Builder
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A `Device` is a combination of a `Pattern` with a set of named `Port`s
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which can be used to "snap" devices together to make complex layouts.
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`Device`s can be as simple as one or two ports (e.g. an electrical pad
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or wire), but can also be used to build and represent a large routed
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layout (e.g. a logical block with multiple I/O connections or even a
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full chip).
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For convenience, ports can be read out using square brackets:
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- `device['A'] == Port((0, 0), 0)`
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- `device[['A', 'B']] == {'A': Port((0, 0), 0), 'B': Port((0, 0), pi)}`
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Examples: Creating a Device
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===========================
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- `Device(pattern, ports={'A': port_a, 'C': port_c})` uses an existing
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pattern and defines some ports.
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- `Device(ports=None)` makes a new empty pattern with
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default ports ('A' and 'B', in opposite directions, at (0, 0)).
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- `my_device.build('my_layout')` makes a new pattern and instantiates
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`my_device` in it with offset (0, 0) as a base for further building.
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- `my_device.as_interface('my_component', port_map=['A', 'B'])` makes a new
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(empty) pattern, copies over ports 'A' and 'B' from `my_device`, and
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creates additional ports 'in_A' and 'in_B' facing in the opposite
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directions. This can be used to build a device which can plug into
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`my_device` (using the 'in_*' ports) but which does not itself include
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`my_device` as a subcomponent.
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Examples: Adding to a Device
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============================
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- `my_device.plug(subdevice, {'A': 'C', 'B': 'B'}, map_out={'D': 'myport'})`
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instantiates `subdevice` into `my_device`, plugging ports 'A' and 'B'
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of `my_device` into ports 'C' and 'B' of `subdevice`. The connected ports
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are removed and any unconnected ports from `subdevice` are added to
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`my_device`. Port 'D' of `subdevice` (unconnected) is renamed to 'myport'.
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- `my_device.plug(wire, {'myport': 'A'})` places port 'A' of `wire` at 'myport'
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of `my_device`. If `wire` has only two ports (e.g. 'A' and 'B'), no `map_out`,
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argument is provided, and the `inherit_name` argument is not explicitly
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set to `False`, the unconnected port of `wire` is automatically renamed to
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'myport'. This allows easy extension of existing ports without changing
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their names or having to provide `map_out` each time `plug` is called.
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- `my_device.place(pad, offset=(10, 10), rotation=pi / 2, port_map={'A': 'gnd'})`
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instantiates `pad` at the specified (x, y) offset and with the specified
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rotation, adding its ports to those of `my_device`. Port 'A' of `pad` is
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renamed to 'gnd' so that further routing can use this signal or net name
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rather than the port name on the original `pad` device.
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"""
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__slots__ = ('pattern', 'library', '_dead')
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pattern: Pattern
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""" Layout of this device """
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library: ILibrary | None
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"""
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Library from which existing patterns should be referenced, and to which
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new ones should be added
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"""
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_dead: bool
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""" If True, plug()/place() are skipped (for debugging)"""
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@property
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def ports(self) -> dict[str, Port]:
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return self.pattern.ports
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@ports.setter
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def ports(self, value: dict[str, Port]) -> None:
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self.pattern.ports = value
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def __init__(
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self,
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library: ILibrary | None = None,
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*,
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pattern: Pattern | None = None,
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ports: str | Mapping[str, Port] | None = None,
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name: str | None = None,
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) -> None:
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"""
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# TODO documentation for Builder() constructor
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"""
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self._dead = False
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self.library = library
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if pattern is not None:
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self.pattern = pattern
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else:
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self.pattern = Pattern()
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if ports is not None:
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if self.pattern.ports:
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raise BuildError('Ports supplied for pattern with pre-existing ports!')
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if isinstance(ports, str):
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if library is None:
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raise BuildError('Ports given as a string, but `library` was `None`!')
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ports = library.abstract(ports).ports
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self.pattern.ports.update(copy.deepcopy(dict(ports)))
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if name is not None:
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if library is None:
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raise BuildError('Name was supplied, but no library was given!')
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library[name] = self.pattern
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@classmethod
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def interface(
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cls,
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source: PortList | Mapping[str, Port] | str,
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*,
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library: ILibrary | None = None,
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in_prefix: str = 'in_',
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out_prefix: str = '',
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port_map: dict[str, str] | Sequence[str] | None = None,
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name: str | None = None,
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) -> 'Builder':
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"""
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Begin building a new device based on all or some of the ports in the
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source device. Do not include the source device; instead use it
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to define ports (the "interface") for the new device.
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The ports specified by `port_map` (default: all ports) are copied to
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new device, and additional (input) ports are created facing in the
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opposite directions. The specified `in_prefix` and `out_prefix` are
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prepended to the port names to differentiate them.
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By default, the flipped ports are given an 'in_' prefix and unflipped
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ports keep their original names, enabling intuitive construction of
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a device that will "plug into" the current device; the 'in_*' ports
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are used for plugging the devices together while the original port
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names are used for building the new device.
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Another use-case could be to build the new device using the 'in_'
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ports, creating a new device which could be used in place of the
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current device.
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Args:
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source: A collection of ports (e.g. Pattern, Builder, or dict)
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from which to create the interface.
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library: Library from which existing patterns should be referenced, TODO
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and to which new ones should be added. If not provided,
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the source's library will be used (if available).
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in_prefix: Prepended to port names for newly-created ports with
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reversed directions compared to the current device.
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out_prefix: Prepended to port names for ports which are directly
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copied from the current device.
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port_map: Specification for ports to copy into the new device:
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- If `None`, all ports are copied.
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- If a sequence, only the listed ports are copied
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- If a mapping, the listed ports (keys) are copied and
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renamed (to the values).
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Returns:
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The new builder, with an empty pattern and 2x as many ports as
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listed in port_map.
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Raises:
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`PortError` if `port_map` contains port names not present in the
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current device.
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`PortError` if applying the prefixes results in duplicate port
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names.
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"""
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if library is None:
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if hasattr(source, 'library') and isinstance(source.library, ILibrary):
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library = source.library
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if isinstance(source, str):
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if library is None:
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raise BuildError('Source given as a string, but `library` was `None`!')
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orig_ports = library.abstract(source).ports
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elif isinstance(source, PortList):
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orig_ports = source.ports
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elif isinstance(source, dict):
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orig_ports = source
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else:
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raise BuildError(f'Unable to get ports from {type(source)}: {source}')
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if port_map:
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if isinstance(port_map, dict):
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missing_inkeys = set(port_map.keys()) - set(orig_ports.keys())
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mapped_ports = {port_map[k]: v for k, v in orig_ports.items() if k in port_map}
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else:
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port_set = set(port_map)
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missing_inkeys = port_set - set(orig_ports.keys())
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mapped_ports = {k: v for k, v in orig_ports.items() if k in port_set}
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if missing_inkeys:
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raise PortError(f'`port_map` keys not present in source: {missing_inkeys}')
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else:
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mapped_ports = orig_ports
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ports_in = {f'{in_prefix}{name}': port.deepcopy().rotate(pi)
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for name, port in mapped_ports.items()}
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ports_out = {f'{out_prefix}{name}': port.deepcopy()
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for name, port in mapped_ports.items()}
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duplicates = set(ports_out.keys()) & set(ports_in.keys())
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if duplicates:
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raise PortError(f'Duplicate keys after prefixing, try a different prefix: {duplicates}')
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new = Builder(library=library, ports={**ports_in, **ports_out}, name=name)
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return new
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# @overload
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# def plug(
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# self,
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# other: Abstract | str,
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# map_in: dict[str, str],
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# map_out: dict[str, str | None] | None,
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# *,
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# mirrored: bool = False,
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# inherit_name: bool,
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# set_rotation: bool | None,
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# append: bool,
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# ) -> Self:
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# pass
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#
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# @overload
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# def plug(
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# self,
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# other: Pattern,
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# map_in: dict[str, str],
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# map_out: dict[str, str | None] | None = None,
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# *,
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# mirrored: bool = False,
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# inherit_name: bool = True,
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# set_rotation: bool | None = None,
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# append: bool = False,
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# ) -> Self:
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# pass
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def plug(
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self,
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other: Abstract | str | Pattern,
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map_in: dict[str, str],
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map_out: dict[str, str | None] | None = None,
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*,
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mirrored: bool = False,
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inherit_name: bool = True,
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set_rotation: bool | None = None,
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append: bool = False,
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) -> Self:
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"""
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Instantiate or append a pattern into the current device, connecting
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the ports specified by `map_in` and renaming the unconnected
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ports specified by `map_out`.
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Examples:
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=========
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- `my_device.plug(lib, 'subdevice', {'A': 'C', 'B': 'B'}, map_out={'D': 'myport'})`
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instantiates `lib['subdevice']` into `my_device`, plugging ports 'A' and 'B'
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of `my_device` into ports 'C' and 'B' of `subdevice`. The connected ports
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are removed and any unconnected ports from `subdevice` are added to
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`my_device`. Port 'D' of `subdevice` (unconnected) is renamed to 'myport'.
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- `my_device.plug(lib, 'wire', {'myport': 'A'})` places port 'A' of `lib['wire']`
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at 'myport' of `my_device`.
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If `'wire'` has only two ports (e.g. 'A' and 'B'), no `map_out` argument is
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provided, and the `inherit_name` argument is not explicitly set to `False`,
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the unconnected port of `wire` is automatically renamed to 'myport'. This
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allows easy extension of existing ports without changing their names or
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having to provide `map_out` each time `plug` is called.
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Args:
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other: An `Abstract` describing the device to be instatiated.
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map_in: dict of `{'self_port': 'other_port'}` mappings, specifying
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port connections between the two devices.
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map_out: dict of `{'old_name': 'new_name'}` mappings, specifying
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new names for ports in `other`.
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mirrored: Enables mirroring `other` across the x or y axes prior
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to connecting any ports.
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inherit_name: If `True`, and `map_in` specifies only a single port,
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and `map_out` is `None`, and `other` has only two ports total,
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then automatically renames the output port of `other` to the
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name of the port from `self` that appears in `map_in`. This
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makes it easy to extend a device with simple 2-port devices
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(e.g. wires) without providing `map_out` each time `plug` is
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called. See "Examples" above for more info. Default `True`.
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set_rotation: If the necessary rotation cannot be determined from
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the ports being connected (i.e. all pairs have at least one
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port with `rotation=None`), `set_rotation` must be provided
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to indicate how much `other` should be rotated. Otherwise,
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`set_rotation` must remain `None`.
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Returns:
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self
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Raises:
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`PortError` if any ports specified in `map_in` or `map_out` do not
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exist in `self.ports` or `other_names`.
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`PortError` if there are any duplicate names after `map_in` and `map_out`
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are applied.
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`PortError` if the specified port mapping is not achieveable (the ports
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do not line up)
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"""
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if self._dead:
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logger.error('Skipping plug() since device is dead')
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return self
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if isinstance(other, str):
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if self.library is None:
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raise BuildError('No library available, but `other` was a string!')
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other = self.library.abstract(other)
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# If asked to inherit a name, check that all conditions are met
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if (inherit_name
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and not map_out
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and len(map_in) == 1
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and len(other.ports) == 2):
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out_port_name = next(iter(set(other.ports.keys()) - set(map_in.values())))
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map_out = {out_port_name: next(iter(map_in.keys()))}
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if map_out is None:
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map_out = {}
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map_out = copy.deepcopy(map_out)
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self.check_ports(other.ports.keys(), map_in, map_out)
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translation, rotation, pivot = self.find_transform(
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other,
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map_in,
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mirrored=mirrored,
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set_rotation=set_rotation,
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)
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# get rid of plugged ports
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for ki, vi in map_in.items():
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del self.ports[ki]
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map_out[vi] = None
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if isinstance(other, Pattern):
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assert append
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self.place(other, offset=translation, rotation=rotation, pivot=pivot,
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mirrored=mirrored, port_map=map_out, skip_port_check=True, append=append)
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return self
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# @overload
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# def place(
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# self,
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# other: Abstract | str,
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# *,
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# offset: ArrayLike,
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# rotation: float,
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# pivot: ArrayLike,
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# mirrored: bool = False,
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# port_map: dict[str, str | None] | None,
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# skip_port_check: bool,
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# append: bool,
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# ) -> Self:
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# pass
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#
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# @overload
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# def place(
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# self,
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# other: Pattern,
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# *,
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# offset: ArrayLike,
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# rotation: float,
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# pivot: ArrayLike,
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# mirrored: bool = False,
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# port_map: dict[str, str | None] | None,
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# skip_port_check: bool,
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# append: Literal[True],
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# ) -> Self:
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# pass
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def place(
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self,
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other: Abstract | str | Pattern,
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*,
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offset: ArrayLike = (0, 0),
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rotation: float = 0,
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pivot: ArrayLike = (0, 0),
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mirrored: bool = False,
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port_map: dict[str, str | None] | None = None,
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skip_port_check: bool = False,
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append: bool = False,
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) -> Self:
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"""
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Instantiate or append the device `other` into the current device, adding its
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ports to those of the current device (but not connecting any ports).
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Mirroring is applied before rotation; translation (`offset`) is applied last.
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Examples:
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=========
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- `my_device.place(pad, offset=(10, 10), rotation=pi / 2, port_map={'A': 'gnd'})`
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instantiates `pad` at the specified (x, y) offset and with the specified
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rotation, adding its ports to those of `my_device`. Port 'A' of `pad` is
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renamed to 'gnd' so that further routing can use this signal or net name
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rather than the port name on the original `pad` device.
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Args:
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other: An `Abstract` describing the device to be instatiated.
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offset: Offset at which to place the instance. Default (0, 0).
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rotation: Rotation applied to the instance before placement. Default 0.
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pivot: Rotation is applied around this pivot point (default (0, 0)).
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Rotation is applied prior to translation (`offset`).
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mirrored: Whether theinstance should be mirrored across the x and y axes.
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Mirroring is applied before translation and rotation.
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port_map: dict of `{'old_name': 'new_name'}` mappings, specifying
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new names for ports in the instantiated device. New names can be
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`None`, which will delete those ports.
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skip_port_check: Can be used to skip the internal call to `check_ports`,
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in case it has already been performed elsewhere.
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Returns:
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self
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Raises:
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`PortError` if any ports specified in `map_in` or `map_out` do not
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exist in `self.ports` or `other.ports`.
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`PortError` if there are any duplicate names after `map_in` and `map_out`
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are applied.
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"""
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if self._dead:
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logger.error('Skipping place() since device is dead')
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return self
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if isinstance(other, str):
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if self.library is None:
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raise BuildError('No library available, but `other` was a string!')
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other = self.library.abstract(other)
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if port_map is None:
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port_map = {}
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if not skip_port_check:
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self.check_ports(other.ports.keys(), map_in=None, map_out=port_map)
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ports = {}
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for name, port in other.ports.items():
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new_name = port_map.get(name, name)
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if new_name is None:
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continue
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ports[new_name] = port
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for name, port in ports.items():
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p = port.deepcopy()
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if mirrored:
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p.mirror()
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p.rotate_around(pivot, rotation)
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p.translate(offset)
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self.ports[name] = p
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if append:
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if isinstance(other, Pattern):
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other_pat = other
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elif isinstance(other, Abstract):
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assert self.library is not None
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other_pat = self.library[other.name]
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else:
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other_pat = self.library[name]
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other_copy = other_pat.deepcopy()
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other_copy.ports.clear()
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if mirrored:
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other_copy.mirror()
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other_copy.rotate_around(pivot, rotation)
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other_copy.translate_elements(offset)
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self.pattern.append(other_copy)
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else:
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assert not isinstance(other, Pattern)
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ref = Ref(mirrored=mirrored)
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ref.rotate_around(pivot, rotation)
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ref.translate(offset)
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self.pattern.refs[other.name].append(ref)
|
|
return self
|
|
|
|
def translate(self, offset: ArrayLike) -> Self:
|
|
"""
|
|
Translate the pattern and all ports.
|
|
|
|
Args:
|
|
offset: (x, y) distance to translate by
|
|
|
|
Returns:
|
|
self
|
|
"""
|
|
self.pattern.translate_elements(offset)
|
|
return self
|
|
|
|
def rotate_around(self, pivot: ArrayLike, angle: float) -> Self:
|
|
"""
|
|
Rotate the pattern and all ports.
|
|
|
|
Args:
|
|
angle: angle (radians, counterclockwise) to rotate by
|
|
pivot: location to rotate around
|
|
|
|
Returns:
|
|
self
|
|
"""
|
|
self.pattern.rotate_around(pivot, angle)
|
|
for port in self.ports.values():
|
|
port.rotate_around(pivot, angle)
|
|
return self
|
|
|
|
def mirror(self, axis: int = 0) -> Self:
|
|
"""
|
|
Mirror the pattern and all ports across the specified axis.
|
|
|
|
Args:
|
|
axis: Axis to mirror across (x=0, y=1)
|
|
|
|
Returns:
|
|
self
|
|
"""
|
|
self.pattern.mirror(axis)
|
|
return self
|
|
|
|
def set_dead(self) -> Self:
|
|
"""
|
|
Disallows further changes through `plug()` or `place()`.
|
|
This is meant for debugging:
|
|
```
|
|
dev.plug(a, ...)
|
|
dev.set_dead() # added for debug purposes
|
|
dev.plug(b, ...) # usually raises an error, but now skipped
|
|
dev.plug(c, ...) # also skipped
|
|
dev.pattern.visualize() # shows the device as of the set_dead() call
|
|
```
|
|
|
|
Returns:
|
|
self
|
|
"""
|
|
self._dead = True
|
|
return self
|
|
|
|
def __repr__(self) -> str:
|
|
s = f'<Builder {self.pattern} >' # TODO maybe show lib and tools? in builder repr?
|
|
return s
|
|
|
|
|