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