scripts: Adding initial version of the python-skywater-pdk module.
Signed-off-by: Tim 'mithro' Ansell <tansell@google.com>
diff --git a/scripts/python-skywater-pdk/skywater_pdk/__init__.py b/scripts/python-skywater-pdk/skywater_pdk/__init__.py
new file mode 100644
index 0000000..b27a7d1
--- /dev/null
+++ b/scripts/python-skywater-pdk/skywater_pdk/__init__.py
@@ -0,0 +1,17 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2020 SkyWater PDK Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
diff --git a/scripts/python-skywater-pdk/skywater_pdk/base.py b/scripts/python-skywater-pdk/skywater_pdk/base.py
new file mode 100644
index 0000000..ec4864b
--- /dev/null
+++ b/scripts/python-skywater-pdk/skywater_pdk/base.py
@@ -0,0 +1,506 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Copyright 2020 SkyWater PDK Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import os
+
+from dataclasses import dataclass
+from dataclasses_json import dataclass_json
+from enum import Enum
+from typing import Optional, Union, Tuple
+
+from .utils import comparable_to_none
+from .utils import dataclass_json_passthru_config as dj_pass_cfg
+
+
+LibraryOrCell = Union['Library', 'Cell']
+
+
+def parse_pathname(pathname):
+ """Extract library and module name for pathname.
+
+ Returns
+ -------
+ obj : Library or Cell
+ Library or Cell information parsed from filename
+ filename : str, optional
+ String containing any filename extracted.
+ String containing the file extension
+
+ >>> parse_pathname('skywater-pdk/libraries/sky130_fd_sc_hd/v0.0.1/cells/a2111o')
+ (Cell(name='a2111o', library=Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hd', version=LibraryVersion(milestone=0, major=0, minor=1, commits=0, hash=''))), None)
+
+ >>> parse_pathname('skywater-pdk/libraries/sky130_fd_sc_hd/v0.0.1/cells/a2111o/README.rst')
+ (Cell(name='a2111o', library=Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hd', version=LibraryVersion(milestone=0, major=0, minor=1, commits=0, hash=''))), 'README.rst')
+
+ >>> parse_pathname('skywater-pdk/libraries/sky130_fd_sc_hd/v0.0.1')
+ (Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hd', version=LibraryVersion(milestone=0, major=0, minor=1, commits=0, hash='')), None)
+
+ >>> parse_pathname('skywater-pdk/libraries/sky130_fd_sc_hd/v0.0.1/README.rst')
+ (Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hd', version=LibraryVersion(milestone=0, major=0, minor=1, commits=0, hash='')), 'README.rst')
+
+ >>> parse_pathname('libraries/sky130_fd_sc_hd/v0.0.1')
+ (Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hd', version=LibraryVersion(milestone=0, major=0, minor=1, commits=0, hash='')), None)
+
+ >>> parse_pathname('libraries/sky130_fd_sc_hd/v0.0.1/README.rst')
+ (Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hd', version=LibraryVersion(milestone=0, major=0, minor=1, commits=0, hash='')), 'README.rst')
+
+ >>> parse_pathname('sky130_fd_sc_hd/v0.0.1')
+ (Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hd', version=LibraryVersion(milestone=0, major=0, minor=1, commits=0, hash='')), None)
+
+ >>> parse_pathname('sky130_fd_sc_hd/v0.0.1/README.rst')
+ (Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hd', version=LibraryVersion(milestone=0, major=0, minor=1, commits=0, hash='')), 'README.rst')
+
+ >>> parse_pathname('sky130_fd_sc_hd/v0.0.1/RANDOM')
+ (Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hd', version=LibraryVersion(milestone=0, major=0, minor=1, commits=0, hash='')), 'RANDOM')
+
+ >>> parse_pathname('RANDOM') #doctest: +ELLIPSIS
+ Traceback (most recent call last):
+ ...
+ ValueError: ...
+
+ >>> parse_pathname('libraries/RANDOM/v0.0.1') #doctest: +ELLIPSIS
+ Traceback (most recent call last):
+ ...
+ ValueError: ...
+
+ >>> parse_pathname('libraries/skywater_fd_sc_hd/vA.B.C') #doctest: +ELLIPSIS
+ Traceback (most recent call last):
+ ...
+ ValueError: ...
+ """
+ if os.path.exists(pathname):
+ pathname = os.path.abspath(pathname)
+
+ pathbits = pathname.split(os.path.sep)
+ # Remove any files at the end of the path
+ filename = None
+ if '.' in pathbits[-1]:
+ if not pathbits[-1].startswith('v'):
+ filename = pathbits.pop(-1)
+
+ obj_type = None
+ obj_name = None
+
+ lib_name = None
+ lib_version = None
+
+ while len(pathbits) > 1:
+ n1 = pathbits[-1]
+ n2 = pathbits[-2]
+ if len(pathbits) > 2:
+ n3 = pathbits[-3]
+ else:
+ n3 = ''
+
+ # [..., 'cells', <cellname>]
+ # [..., 'models', <modname>]
+ if n2 in ('cells', 'models'):
+ obj_name = pathbits.pop(-1)
+ obj_type = pathbits.pop(-1)
+ continue
+ # [..., 'skywater-pdk', 'libraries', <library name>, <library version>]
+ elif n3 == "libraries":
+ lib_version = pathbits.pop(-1)
+ lib_name = pathbits.pop(-1)
+ assert pathbits.pop(-1) == 'libraries'
+ # [..., 'skywater-pdk', 'libraries', <library name>]
+ elif n2 == "libraries":
+ lib_name = pathbits.pop(-1)
+ assert pathbits.pop(-1) == 'libraries'
+ # [<library name>, <library version>]
+ elif n1.startswith('v'):
+ lib_version = pathbits.pop(-1)
+ lib_name = pathbits.pop(-1)
+ elif filename is None:
+ filename = pathbits.pop(-1)
+ continue
+ else:
+ raise ValueError('Unable to parse: {}'.format(pathname))
+ break
+
+ if not lib_name:
+ raise ValueError('Unable to parse: {}'.format(pathname))
+ lib = Library.parse(lib_name)
+ if lib_version:
+ lib.version = LibraryVersion.parse(lib_version)
+ if obj_name:
+ obj = Cell.parse(obj_name)
+ obj.library = lib
+ return obj, filename
+ else:
+ return lib, filename
+
+
+
+def parse_filename(pathname) -> Tuple[LibraryOrCell, Optional[str], Optional[str]]:
+ """Extract library and module name from filename.
+
+ Returns
+ -------
+ obj : Library or Cell
+ Library or Cell information parsed from filename
+ extra : str, optional
+ String containing any extra unparsed data (like corner information)
+ ext : str, optional
+ String containing the file extension
+
+ >>> t = list(parse_filename('sky130_fd_io__top_ground_padonlyv2__tt_1p80V_3p30V_3p30V_25C.wrap.lib'))
+ >>> t.pop(0)
+ Cell(name='top_ground_padonlyv2', library=Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.io, name='', version=None))
+ >>> t.pop(0)
+ 'tt_1p80V_3p30V_3p30V_25C'
+ >>> t.pop(0)
+ 'wrap.lib'
+ >>> t = list(parse_filename('v0.10.0/sky130_fd_sc_hdll__a211o__tt_1p80V_3p30V_3p30V_25C.wrap.json'))
+ >>> t.pop(0)
+ Cell(name='a211o', library=Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hdll', version=LibraryVersion(milestone=0, major=10, minor=0, commits=0, hash='')))
+ >>> t.pop(0)
+ 'tt_1p80V_3p30V_3p30V_25C'
+ >>> t.pop(0)
+ 'wrap.json'
+
+ >>> t = list(parse_filename('sky130_fd_io/v0.1.0/sky130_fd_io__top_powerhv_hvc_wpad__tt_1p80V_3p30V_100C.wrap.json'))
+ >>> t.pop(0)
+ Cell(name='top_powerhv_hvc_wpad', library=Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.io, name='', version=LibraryVersion(milestone=0, major=1, minor=0, commits=0, hash='')))
+ >>> from skywater_pdk.corners import parse_filename as pf_corners
+ >>> pf_corners(t.pop(0))
+ (Corner(corner=(CornerType.t, CornerType.t), volts=(1.8, 3.3), temps=(100,), flags=None), [])
+ >>> t.pop(0)
+ 'wrap.json'
+
+ >>> parse_filename('libraries/sky130_fd_io/v0.2.1/cells/analog_pad/sky130_fd_io-analog_pad.blackbox.v')[0]
+ Cell(name='analog_pad', library=Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.io, name='', version=LibraryVersion(milestone=0, major=2, minor=1, commits=0, hash='')))
+
+ >>> t = list(parse_filename('skywater-pdk/libraries/sky130_fd_sc_hd/v0.0.1/cells/a2111o/sky130_fd_sc_hd__a2111o.blackbox.v'))
+ >>> t.pop(0)
+ Cell(name='a2111o', library=Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hd', version=LibraryVersion(milestone=0, major=0, minor=1, commits=0, hash='')))
+ >>> assert t.pop(0) is None
+ >>> t.pop(0)
+ 'blackbox.v'
+
+ """
+ dirname, filename = os.path.split(pathname)
+
+ # Extract a version if it exists.
+ dirbase, dirversion = os.path.split(dirname)
+ if dirbase.endswith('cells'):
+ dirbase, dirversion = os.path.split(dirbase)
+ assert dirversion == 'cells', (dirbase, dirversion)
+ dirbase, dirversion = os.path.split(dirbase)
+ try:
+ version = LibraryVersion.parse(dirversion)
+ except TypeError:
+ version = None
+
+ # Extract the file extension
+ if '.' in filename:
+ basename, extension = filename.split('.', 1)
+ else:
+ basename = filename
+ extension = ''
+
+ basename = basename.replace('-', SEPERATOR) # FIXME: !!!
+
+ # Parse the actual filename
+ bits = basename.split(SEPERATOR, 3)
+ if len(bits) in (1,):
+ library = Library.parse(bits.pop(0))
+ extra = ""
+ if bits:
+ extra = bits.pop(0)
+ if version:
+ library.version = version
+ elif len(bits) in (2, 3):
+ library = Cell.parse(bits[0]+SEPERATOR+bits[1])
+ if version:
+ library.library.version = version
+ extra = None
+ if len(bits) > 2:
+ extra = bits[2]
+ else:
+ raise NotImplementedError()
+
+ return (library, extra, extension)
+
+
+SEPERATOR = "__"
+
+@comparable_to_none
+@dataclass_json
+@dataclass(order=True, frozen=True)
+class LibraryVersion:
+ """
+
+ >>> v0 = LibraryVersion.parse("v0.0.0")
+ >>> v0
+ LibraryVersion(milestone=0, major=0, minor=0, commits=0, hash='')
+ >>> v1a = LibraryVersion.parse("v0.0.0-10-g123abc")
+ >>> v1a
+ LibraryVersion(milestone=0, major=0, minor=0, commits=10, hash='123abc')
+ >>> v1b = LibraryVersion.parse("v0.0.0-4-g123abc")
+ >>> v1b
+ LibraryVersion(milestone=0, major=0, minor=0, commits=4, hash='123abc')
+ >>> v2 = LibraryVersion.parse("v0.0.2")
+ >>> v2
+ LibraryVersion(milestone=0, major=0, minor=2, commits=0, hash='')
+ >>> v3 = LibraryVersion.parse("v0.2.0")
+ >>> v3
+ LibraryVersion(milestone=0, major=2, minor=0, commits=0, hash='')
+ >>> v4 = LibraryVersion.parse("v0.0.10")
+ >>> v4
+ LibraryVersion(milestone=0, major=0, minor=10, commits=0, hash='')
+ >>> v0 < v1a
+ True
+ >>> v1a < v2
+ True
+ >>> v0 < v2
+ True
+ >>> l = [v1a, v2, v3, None, v1b, v0, v2]
+ >>> l.sort()
+ >>> [i.fullname for i in l]
+ ['0.0.0', '0.0.0-4-g123abc', '0.0.0-10-g123abc', '0.0.2', '0.0.2', '0.2.0']
+ """
+ milestone: int = 0
+ major: int = 0
+ minor: int = 0
+
+ commits: int = 0
+ hash: str = ''
+
+ @classmethod
+ def parse(cls, s):
+ if not s.startswith('v'):
+ raise TypeError("Unknown version: {}".format(s))
+ kw = {}
+ if '-' in s:
+ git_bits = s.split('-')
+ if len(git_bits) != 3:
+ raise TypeError("Unparsable git version: {}".format(s))
+ s = git_bits[0]
+ kw['commits'] = int(git_bits[1])
+ assert git_bits[2].startswith('g'), git_bits[2]
+ kw['hash'] = git_bits[2][1:]
+ kw['milestone'], kw['major'], kw['minor'] = (
+ int(i) for i in s[1:].split('.'))
+ return cls(**kw)
+
+ def as_tuple(self):
+ return (self.milestone, self.major, self.minor, self.commits, minor)
+
+ @property
+ def fullname(self):
+ o = []
+ s = "{}.{}.{}".format(
+ self.milestone, self.major, self.minor)
+ if self.commits:
+ s += "-{}-g{}".format(self.commits, self.hash)
+ return s
+
+
+class LibraryNode(Enum):
+ SKY130 = "SkyWater 130nm"
+
+ @classmethod
+ def parse(cls, s):
+ s = s.upper()
+ if not hasattr(cls, s):
+ raise ValueError("Unknown node: {}".format(s))
+ return getattr(cls, s)
+
+ def __repr__(self):
+ return "LibraryNode."+self.name
+
+ def to_json(self):
+ return self.name
+
+
+class LibrarySource(str):
+ """Where a library was created."""
+ Known = []
+
+ @classmethod
+ def parse(cls, s):
+ try:
+ return cls.Known[cls.Known.index(s)]
+ except ValueError:
+ return cls(s)
+
+ @property
+ def fullname(self):
+ if self in self.Known:
+ return self.__doc__
+ else:
+ return 'Unknown source: '+str.__repr__(self)
+
+ def __repr__(self):
+ return 'LibrarySource({})'.format(str.__repr__(self))
+
+ def to_json(self):
+ if self in self.Known:
+ return self.__doc__
+ return str.__repr__(self)
+
+
+Foundary = LibrarySource("fd")
+Foundary.__doc__ = "The SkyWater Foundary"
+LibrarySource.Known.append(Foundary)
+
+Efabless = LibrarySource("ef")
+Efabless.__doc__ = "Efabless"
+LibrarySource.Known.append(Efabless)
+
+OSU = LibrarySource("osu")
+OSU.__doc__ = "Oklahoma State University"
+LibrarySource.Known.append(OSU)
+
+
+class LibraryType(Enum):
+ pr = "Primitives"
+ sc = "Standard Cells"
+ sp = "Build Space (Flash, SRAM, etc)"
+ io = "IO and Periphery"
+ xx = "Miscellaneous"
+
+ @classmethod
+ def parse(cls, s):
+ if not hasattr(cls, s):
+ raise ValueError("Unknown library type: {}".format(s))
+ return getattr(cls, s)
+
+ def __repr__(self):
+ return "LibraryType."+self.name
+
+ def __str__(self):
+ return self.value
+
+ def to_json(self):
+ return self.value
+
+
+@comparable_to_none
+@dataclass_json
+@dataclass
+class Library:
+ """
+
+ >>> l = Library.parse("sky130_fd_sc_hd")
+ >>> l
+ Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hd', version=None)
+ >>> l.fullname
+ 'sky130_fd_sc_hd'
+ >>> l.source.fullname
+ 'The SkyWater Foundary'
+ >>> print(l.type)
+ Standard Cells
+
+ >>> l = Library.parse("sky130_rrr_sc_hd")
+ >>> l
+ Library(node=LibraryNode.SKY130, source=LibrarySource('rrr'), type=LibraryType.sc, name='hd', version=None)
+ >>> l.fullname
+ 'sky130_rrr_sc_hd'
+ >>> l.source.fullname
+ "Unknown source: 'rrr'"
+
+ >>> l1 = Library.parse("sky130_fd_sc_hd")
+ >>> l2 = Library.parse("sky130_fd_sc_hdll")
+ >>> l = [l2, None, l1]
+ >>> l.sort()
+
+ """
+
+ node: LibraryNode = dj_pass_cfg()
+ source: LibrarySource = dj_pass_cfg()
+ type: LibraryType = dj_pass_cfg()
+ name: str = ''
+ version: Optional[LibraryVersion] = None
+
+ @property
+ def fullname(self):
+ output = []
+ output.append(self.node.name.lower())
+ output.append(self.source.lower())
+ output.append(self.type.name)
+ if self.name:
+ output.append(self.name)
+ return "_".join(output)
+
+ @classmethod
+ def parse(cls, s):
+ if SEPERATOR in s:
+ raise ValueError(
+ "Found separator '__' in library name: {!r}".format(s))
+
+ bits = s.split("_")
+ if len(bits) < 3:
+ raise ValueError(
+ "Did not find enough parts in library name: {}".format(bits))
+
+ kw = {}
+ kw['node'] = LibraryNode.parse(bits.pop(0))
+ kw['source'] = LibrarySource.parse(bits.pop(0))
+ kw['type'] = LibraryType.parse(bits.pop(0))
+ if bits:
+ kw['name'] = bits.pop(0)
+ return cls(**kw)
+
+
+@dataclass_json
+@dataclass
+class Cell:
+ """
+ >>> c = Cell.parse("sky130_fd_sc_hd__abc")
+ >>> c
+ Cell(name='abc', library=Library(node=LibraryNode.SKY130, source=LibrarySource('fd'), type=LibraryType.sc, name='hd', version=None))
+ >>> c.fullname
+ 'sky130_fd_sc_hd__abc'
+
+ >>> c = Cell.parse("abc")
+ >>> c
+ Cell(name='abc', library=None)
+ >>> c.fullname
+ Traceback (most recent call last):
+ ...
+ ValueError: Can't get fullname for cell without a library! Cell(name='abc', library=None)
+ """
+
+ name: str
+ library: Optional[Library] = None
+
+ @property
+ def fullname(self):
+ if not self.library:
+ raise ValueError(
+ "Can't get fullname for cell without a library! {}".format(
+ self))
+ return "{}__{}".format(self.library.fullname, self.name)
+
+ @classmethod
+ def parse(cls, s):
+ kw = {}
+ if SEPERATOR in s:
+ library, s = s.split(SEPERATOR, 1)
+ kw['library'] = Library.parse(library)
+ kw['name'] = s
+ return cls(**kw)
+
+
+
+if __name__ == "__main__":
+ import doctest
+ doctest.testmod()
diff --git a/scripts/python-skywater-pdk/skywater_pdk/sizes.py b/scripts/python-skywater-pdk/skywater_pdk/sizes.py
new file mode 100644
index 0000000..637babd
--- /dev/null
+++ b/scripts/python-skywater-pdk/skywater_pdk/sizes.py
@@ -0,0 +1,325 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Copyright 2020 SkyWater PDK Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import abc
+import os
+import operator
+
+from dataclasses import dataclass
+from dataclasses_json import dataclass_json
+
+
+def parse_size(s):
+ """
+
+ >>> parse_size('_1')
+ CellSizeNumeric(units=1)
+
+ >>> parse_size('sky130_fd_sc_ms__sdfrtp_1.v')
+ CellSizeNumeric(units=1)
+
+ >>> parse_size('libraries/sky130_fd_sc_ms/v0.0.1/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_1.v')
+ CellSizeNumeric(units=1)
+
+ >>> parse_size('libraries/sky130_fd_sc_ms/v0.0.1/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp_1.bb.blackbox.v')
+ CellSizeNumeric(units=1)
+
+ >>> parse_size('libraries/sky130_fd_sc_ms/v0.0.1/cells/sdfrtp/sky130_fd_sc_ms__sdfrtp.v')
+ >>> parse_size('sky130_fd_sc_ms__sdfrtp.v')
+ >>> parse_size('_blah')
+ """
+ dirname, s = os.path.split(s)
+ if '.' in s:
+ s = s.split('.', 1)[0]
+ if s.count('_') > 1:
+ s = '_' + (s.rsplit('_', 1)[-1])
+ if not s or s == '_':
+ return None
+ try:
+ return CellSize.from_suffix(s)
+ except InvalidSuffixError as e:
+ return None
+
+
+class InvalidSuffixError(ValueError):
+ def __init__(self, s):
+ ValueError.__init__(self, "Invalid suffix: {}".format(s.strip()))
+
+
+class CellSize(abc.ABC):
+ """Drive strength variants of a given cell.
+
+ >>> d1 = CellSize.from_suffix("_1")
+ >>> d2 = CellSize.from_suffix("_lp")
+ >>> d3 = CellSize.from_suffix("_m")
+ >>> d4 = CellSize.from_suffix("_2")
+ >>> CellSize.from_suffix("_abc")
+ Traceback (most recent call last):
+ ...
+ InvalidSuffixError: Invalid suffix: _abc
+ >>> l = [d1, d2, d3, d4]
+ >>> l
+ [CellSizeNumeric(units=1), CellSizeLowPower(lp_variant=0), CellSizeMinimum(), CellSizeNumeric(units=2)]
+ >>> l.sort()
+ >>> l
+ [CellSizeNumeric(units=1), CellSizeNumeric(units=2), CellSizeLowPower(lp_variant=0), CellSizeMinimum()]
+ """
+
+ @abc.abstractmethod
+ def describe(self):
+ raise NotImplementedError
+
+ @property
+ @abc.abstractmethod
+ def suffix(self):
+ raise NotImplementedError
+
+ @classmethod
+ def from_suffix(cls, s):
+ errors = []
+ for subcls in cls.__subclasses__():
+ try:
+ return subcls.from_suffix(s)
+ except (ValueError, AssertionError) as e:
+ errors.append((subcls.__name__, e))
+ assert errors, ("Unknown error!?", s)
+ msg = [s, '']
+ for cls_name, e in errors:
+ if isinstance(e, ValueError):
+ continue
+ msg.append("{} failed with: {}".format(cls_name, e))
+ raise InvalidSuffixError("\n".join(msg))
+
+ def __str__(self):
+ return "with size {}".format(self.describe())
+
+ def _cmp(self, op, o):
+ if not isinstance(o, CellSize):
+ return False
+ return op(self.suffix, o.suffix)
+
+ # Comparison operators
+ def __lt__(self, o):
+ return self._cmp(operator.lt, o)
+
+ def __le__(self, o):
+ return self._cmp(operator.le, o)
+
+ def __eq__(self, o):
+ return self._cmp(operator.eq, o)
+
+ def __ne__(self, o):
+ return self._cmp(operator.ne, o)
+
+ def __ge__(self, o):
+ return self._cmp(operator.ge, o)
+
+ def __gt__(self, o):
+ return self._cmp(operator.gt, o)
+
+
+@dataclass_json
+@dataclass(frozen=True)
+class CellSizeNumeric(CellSize):
+ """
+ >>> s1 = CellSizeNumeric.from_suffix("_1")
+ >>> s2 = CellSizeNumeric.from_suffix("_2")
+ >>> s3 = CellSizeNumeric.from_suffix("_3")
+ >>> CellSizeNumeric.from_suffix("_-1")
+ Traceback (most recent call last):
+ ...
+ InvalidSuffixError: Invalid suffix: _-1
+ >>> s1
+ CellSizeNumeric(units=1)
+ >>> s2
+ CellSizeNumeric(units=2)
+ >>> s3
+ CellSizeNumeric(units=3)
+ >>> str(s1)
+ 'with size of 1 units'
+ >>> str(s2)
+ 'with size of 2 units'
+ >>> str(s3)
+ 'with size of 3 units (invalid?)'
+ >>> s1.describe()
+ 'of 1 units'
+ >>> s2.describe()
+ 'of 2 units'
+ >>> s3.describe()
+ 'of 3 units (invalid?)'
+ >>> s1.suffix
+ '_1'
+ >>> s2.suffix
+ '_2'
+ >>> s3.suffix
+ '_3'
+ """
+ units: int
+
+ VALID_UNIT_VALUES = (0, 1, 2, 4, 8, 6, 12, 14, 16, 20, 32)
+
+ def describe(self):
+ suffix = ""
+ if self.units not in self.VALID_UNIT_VALUES:
+ suffix = " (invalid?)"
+
+ return "of {} units{}".format(self.units, suffix)
+
+ @property
+ def suffix(self):
+ return "_{}".format(self.units)
+
+ @classmethod
+ def from_suffix(cls, s):
+ if not s.startswith("_"):
+ raise InvalidSuffixError(s)
+ i = int(s[1:])
+ if i < 0:
+ raise InvalidSuffixError(s)
+ return cls(i)
+
+
+@dataclass_json
+@dataclass(frozen=True)
+class CellSizeLowPower(CellSize):
+ """
+ >>> lp = CellSizeLowPower.from_suffix("_lp")
+ >>> lp2 = CellSizeLowPower.from_suffix("_lp2")
+ >>> lp3 = CellSizeLowPower.from_suffix("_lp3")
+ >>> CellSizeLowPower.from_suffix("_ld")
+ Traceback (most recent call last):
+ ...
+ InvalidSuffixError: Invalid suffix: _ld
+ >>> lp
+ CellSizeLowPower(lp_variant=0)
+ >>> lp2
+ CellSizeLowPower(lp_variant=1)
+ >>> lp3
+ CellSizeLowPower(lp_variant=2)
+ >>> str(lp)
+ 'with size for low power'
+ >>> str(lp2)
+ 'with size for low power (alternative)'
+ >>> str(lp3)
+ 'with size for low power (extra alternative 0)'
+ >>> lp.describe()
+ 'for low power'
+ >>> lp2.describe()
+ 'for low power (alternative)'
+ >>> lp3.describe()
+ 'for low power (extra alternative 0)'
+ >>> lp.suffix
+ '_lp'
+ >>> lp2.suffix
+ '_lp2'
+ >>> lp3.suffix
+ '_lp3'
+ """
+ lp_variant: int = 0
+
+ def describe(self):
+ if self.lp_variant == 0:
+ suffix = ""
+ elif self.lp_variant == 1:
+ suffix = " (alternative)"
+ else:
+ assert self.lp_variant >= 2, self.lp_variant
+ suffix = " (extra alternative {})".format(self.lp_variant-2)
+ return "for low power"+suffix
+
+ @property
+ def suffix(self):
+ if self.lp_variant == 0:
+ return "_lp"
+ else:
+ assert self.lp_variant > 0, self.lp_variant
+ return "_lp{}".format(self.lp_variant+1)
+
+ @classmethod
+ def from_suffix(cls, s):
+ if not s.startswith("_lp"):
+ raise InvalidSuffixError(s)
+ if s == "_lp":
+ return cls()
+ elif s == "_lp2":
+ return cls(1)
+ else:
+ try:
+ i = int(s[3:])
+ except ValueError as e:
+ raise InvalidSuffixError(s)
+ assert i > 2, (s, i)
+ return cls(i-1)
+
+
+class CellSizeMinimum(CellSize):
+ """
+ >>> m = CellSizeMinimum.from_suffix("_m")
+ >>> CellSizeMinimum.from_suffix("_m2")
+ Traceback (most recent call last):
+ ...
+ InvalidSuffixError: Invalid suffix: _m2
+ >>> m
+ CellSizeMinimum()
+ >>> str(m)
+ 'with size minimum'
+ >>> m.describe()
+ 'minimum'
+ >>> m.suffix
+ '_m'
+
+ >>> m1 = CellSizeMinimum()
+ >>> m2 = CellSizeMinimum()
+ >>> assert m1 is m2
+ """
+ _object = None
+ def __new__(cls):
+ if cls._object is None:
+ cls._object = object.__new__(cls)
+ return cls._object
+
+ def __repr__(self):
+ return "CellSizeMinimum()"
+
+ def describe(self):
+ return "minimum"
+
+ @property
+ def suffix(self):
+ return "_m"
+
+ @classmethod
+ def from_suffix(cls, s):
+ if s != "_m":
+ raise InvalidSuffixError(s)
+ return cls()
+
+ def __hash__(self):
+ return id(self)
+
+ def to_dict(self):
+ return {'minimum': None}
+
+
+CellSizeMinimum._object = CellSizeMinimum()
+
+
+if __name__ == "__main__":
+ import doctest
+ doctest.testmod()
diff --git a/scripts/python-skywater-pdk/skywater_pdk/utils.py b/scripts/python-skywater-pdk/skywater_pdk/utils.py
new file mode 100644
index 0000000..d0b284a
--- /dev/null
+++ b/scripts/python-skywater-pdk/skywater_pdk/utils.py
@@ -0,0 +1,213 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Copyright 2020 SkyWater PDK Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import dataclasses
+import dataclasses_json
+import random
+import sys
+
+from dataclasses import dataclass
+from dataclasses_json import dataclass_json
+from enum import Flag
+from typing import Optional, Tuple, Any
+
+
+def dataclass_json_passthru_config(*args, **kw):
+ return dataclasses.field(
+ *args,
+ metadata=dataclasses_json.config(
+ encoder=lambda x: x.to_json(),
+ #decoder=lambda x: x.from_json(),
+ ),
+ **kw,
+ )
+
+def dataclass_json_passthru_sequence_config(*args, **kw):
+ def to_json_sequence(s):
+ if s is None:
+ return None
+ o = []
+ for i in s:
+ if hasattr(i, 'to_json'):
+ o.append(i.to_json())
+ else:
+ o.append(i)
+ return o
+
+ return dataclasses.field(
+ *args,
+ metadata=dataclasses_json.config(
+ encoder=to_json_sequence,
+ #decoder=lambda x: x.from_json(),
+ ),
+ **kw,
+ )
+
+
+
+def comparable_to_none(cls):
+ """
+
+ >>> @comparable_to_none
+ ... @dataclass(order=True)
+ ... class A:
+ ... a: int = 0
+ >>> @comparable_to_none
+ ... @dataclass(order=True)
+ ... class B:
+ ... b: Optional[A] = None
+ >>> b0 = B()
+ >>> repr(b0)
+ 'B(b=None)'
+ >>> str(b0)
+ 'B(b=None)'
+ >>> b1 = B(A())
+ >>> repr(b1)
+ 'B(b=A(a=0))'
+ >>> str(b1)
+ 'B(b=A(a=0))'
+ >>> b2 = B(A(2))
+ >>> repr(b2)
+ 'B(b=A(a=2))'
+ >>> str(b2)
+ 'B(b=A(a=2))'
+ >>> l = [b0, b1, b2, None]
+ >>> for i in range(0, 3):
+ ... random.shuffle(l)
+ ... l.sort()
+ ... print(l)
+ [None, B(b=None), B(b=A(a=0)), B(b=A(a=2))]
+ [None, B(b=None), B(b=A(a=0)), B(b=A(a=2))]
+ [None, B(b=None), B(b=A(a=0)), B(b=A(a=2))]
+
+ """
+ class ComparableToNoneVersion(cls):
+ def __ge__(self, other):
+ if other is None:
+ return True
+ return super().__ge__(other)
+ def __gt__(self, other):
+ if other is None:
+ return True
+ return super().__gt__(other)
+ def __le__(self, other):
+ if other is None:
+ return False
+ return super().__le__(other)
+ def __lt__(self, other):
+ if other is None:
+ return False
+ return super().__lt__(other)
+ def __eq__(self, other):
+ if other is None:
+ return False
+ return super().__eq__(other)
+ def __hash__(self):
+ return super().__hash__()
+ def __repr__(self):
+ s = super().__repr__()
+ return s.replace('comparable_to_none.<locals>.ComparableToNoneVersion', cls.__name__)
+
+ return ComparableToNoneVersion
+
+
+def _is_optional_type(t):
+ """
+ >>> _is_optional_type(Optional[int])
+ True
+ >>> _is_optional_type(Optional[Tuple])
+ True
+ >>> _is_optional_type(Any)
+ False
+ """
+ return hasattr(t, "__args__") and len(t.__args__) == 2 and t.__args__[-1] is type(None)
+
+
+def _get_the_optional_type(t):
+ """
+ >>> _get_the_optional_type(Optional[int])
+ <class 'int'>
+ >>> _get_the_optional_type(Optional[Tuple])
+ typing.Tuple
+ >>> class A:
+ ... pass
+ >>> _get_the_optional_type(Optional[A])
+ <class '__main__.A'>
+ >>> _get_type_name(_get_the_optional_type(Optional[A]))
+ 'A'
+ """
+ assert _is_optional_type(t), t
+ return t.__args__[0]
+
+
+def _get_type_name(ot):
+ """
+ >>> _get_type_name(int)
+ 'int'
+ >>> _get_type_name(Tuple)
+ 'Tuple'
+ >>> _get_type_name(Optional[Tuple])
+ 'typing.Union[typing.Tuple, NoneType]'
+ """
+ if hasattr(ot, "_name") and ot._name:
+ return ot._name
+ elif hasattr(ot, "__name__") and ot.__name__:
+ return ot.__name__
+ else:
+ return str(ot)
+
+
+class OrderedFlag(Flag):
+ def __ge__(self, other):
+ if other is None:
+ return True
+ if self.__class__ is other.__class__:
+ return self.value >= other.value
+ return NotImplemented
+ def __gt__(self, other):
+ if other is None:
+ return True
+ if self.__class__ is other.__class__:
+ return self.value > other.value
+ return NotImplemented
+ def __le__(self, other):
+ if other is None:
+ return False
+ if self.__class__ is other.__class__:
+ return self.value <= other.value
+ return NotImplemented
+ def __lt__(self, other):
+ if other is None:
+ return False
+ if self.__class__ is other.__class__:
+ return self.value < other.value
+ return NotImplemented
+ def __eq__(self, other):
+ if other is None:
+ return False
+ if self.__class__ is other.__class__:
+ return self.value == other.value
+ return NotImplemented
+ def __hash__(self):
+ return hash(self._name_)
+
+
+if __name__ == "__main__":
+ import doctest
+ doctest.testmod()
