Update Amaranth version

requirements.txt

@@ -1,2 +1,2 @@
-amaranth-yosys==0.25.0.0.post77
-git+https://github.com/amaranth-lang/amaranth@ccf7aaf00db54c7647b2f0f0cfdf34835c16fa8f
+amaranth-yosys==0.35.0.0.post81
+git+https://github.com/amaranth-lang/amaranth@ab6503e352825b36bb29f1a8622b9e98aac9a6c6

stubs/amaranth/hdl/ast.pyi

@@ -6,7 +6,7 @@ from abc import ABCMeta, abstractmethod
 from collections.abc import Callable, MutableMapping, MutableSequence, MutableSet
 from typing import Any, Generic, Iterable, Iterator, Mapping, NoReturn, Optional, Sequence, TypeVar, final, overload
 from enum import Enum
-from coreblocks.utils import ValueLike, ShapeLike, StatementLike
+from transactron.utils import ValueLike, ShapeLike, StatementLike
 
 __all__ = ["Shape", "ShapeCastable", "signed", "unsigned", "Value", "Const", "C", "AnyConst", "AnySeq", "Operator", "Mux", "Part", "Slice", "Cat", "Repl", "Array", "ArrayProxy", "Signal", "ClockSignal", "ResetSignal", "ValueCastable", "Sample", "Past", "Stable", "Rose", "Fell", "Initial", "Statement", "Switch", "Property", "Assign", "Assert", "Assume", "Cover", "ValueKey", "ValueDict", "ValueSet", "SignalKey", "SignalDict", "SignalSet", "ValueLike", "ShapeLike", "StatementLike", "SwitchKey"]
 
@@ -50,7 +50,7 @@ class Shape:
         ...
 
     @staticmethod
-    def cast(obj: ShapeLike, *, src_loc_at=...):
+    def cast(obj: ShapeLike, *, src_loc_at=...) -> Shape:
         ...
 
     def __repr__(self) -> str:
@@ -411,7 +411,7 @@ class Signal(Value, DUID, metaclass=_SignalMeta):
         """Create Signal based on another.
 """
         ...
-    
+
     def shape(self) -> Shape:
         ...
 

stubs/amaranth/hdl/dsl.pyi

@@ -5,7 +5,7 @@ This type stub file was generated by pyright.
 from contextlib import _GeneratorContextManager, contextmanager
 from typing import Callable, ContextManager, Iterator, NoReturn, OrderedDict, ParamSpec, TypeVar, Optional
 from typing_extensions import Self
-from coreblocks.utils import HasElaborate
+from transactron.utils import HasElaborate
 from .ast import *
 from .ast import Flattenable
 from .ir import *

stubs/amaranth/hdl/ir.pyi

@@ -2,10 +2,10 @@
 This type stub file was generated by pyright.
 """
 
-from abc import ABCMeta, abstractmethod
+from abc import abstractmethod
 from .ast import *
 from .cd import *
-from coreblocks.utils import HasElaborate
+from transactron.utils import HasElaborate
 
 __all__ = ["Elaboratable", "DriverConflict", "Fragment", "Instance"]
 

stubs/amaranth/hdl/rec.pyi

@@ -5,7 +5,7 @@ This type stub file was generated by pyright.
 from enum import Enum
 from typing import NoReturn, OrderedDict
 from .ast import *
-from coreblocks.utils import LayoutLike
+from transactron.utils import LayoutLike
 
 __all__ = ["Direction", "DIR_NONE", "DIR_FANOUT", "DIR_FANIN", "Layout", "Record"]
 Direction = Enum('Direction', ('NONE', 'FANOUT', 'FANIN'))

stubs/amaranth/lib/coding.pyi

@@ -3,7 +3,7 @@ This type stub file was generated by pyright.
 """
 
 from .. import *
-from coreblocks.utils import HasElaborate
+from transactron.utils import HasElaborate
 
 __all__ = ["Encoder", "Decoder", "PriorityEncoder", "PriorityDecoder", "GrayEncoder", "GrayDecoder"]
 class Encoder(Elaboratable):

stubs/amaranth/lib/data.pyi

@@ -3,18 +3,17 @@ This type stub file was generated by pyright.
 """
 
 from abc import ABCMeta, abstractmethod
-from collections.abc import Callable, Iterator, Mapping
-from enum import Enum
-from typing import Optional, TypeVar, Generic
+from collections.abc import Iterator, Mapping
+from typing import TypeVar, Generic
 from typing_extensions import Self
 from amaranth.hdl import *
 from amaranth.hdl.ast import Assign, ShapeCastable, ValueCastable
-from coreblocks.utils._typing import ShapeLike, ValueLike
+from transactron.utils._typing import ShapeLike, ValueLike
 
 __all__ = ["Field", "Layout", "StructLayout", "UnionLayout", "ArrayLayout", "FlexibleLayout", "View", "Struct", "Union"]
 
 
-_T_ShapeCastable = TypeVar("_T_ShapeCastable", bound=ShapeCastable)
+_T_ShapeCastable = TypeVar("_T_ShapeCastable", bound=ShapeCastable, covariant=True)
 
 
 class Field:
@@ -186,7 +185,7 @@ class View(ValueCastable, Generic[_T_ShapeCastable]):
     def as_value(self) -> Value:
         ...
 
-    def shape(self) -> Layout:
+    def shape(self) -> _T_ShapeCastable:
         ...
 
     def eq(self, other: ValueLike) -> Assign:

stubs/amaranth/lib/enum.pyi

@@ -3,18 +3,23 @@ This type stub file was generated by pyright.
 """
 
 import enum as py_enum
+from typing import Generic, Optional, TypeVar, overload
 from typing_extensions import Self
 from amaranth import *
-from ..hdl.ast import ShapeCastable
+from ..hdl.ast import Assign, ValueCastable, ShapeCastable, ValueLike
 
-__all__ = ['EnumMeta', 'Enum', 'IntEnum', 'Flag', 'IntFlag', 'auto', 'unique']
+__all__ = ['EnumMeta', 'Enum', 'IntEnum', 'Flag', 'IntFlag', 'EnumView', 'FlagView', 'auto', 'unique']
+
+
+_T = TypeVar("_T")
+_T_ViewClass = TypeVar("_T_ViewClass", bound=None | ValueCastable)
 
 
 auto = py_enum.auto
 unique = py_enum.unique
 
 
-class EnumMeta(ShapeCastable, py_enum.EnumMeta):
+class EnumMeta(ShapeCastable, py_enum.EnumMeta, Generic[_T_ViewClass]):
     """Subclass of the standard :class:`enum.EnumMeta` that implements the :class:`ShapeCastable`
     protocol.
 
@@ -26,10 +31,10 @@ class EnumMeta(ShapeCastable, py_enum.EnumMeta):
     or the values of its members.
     """
     @classmethod
-    def __prepare__(metacls, name, bases, shape=..., **kwargs) -> py_enum._EnumDict:
+    def __prepare__(metacls, name, bases, shape: Shape=..., view_class:_T_ViewClass=..., **kwargs) -> py_enum._EnumDict:
         ...
 
-    def __new__(cls, name, bases, namespace, shape=..., **kwargs) -> Self:
+    def __new__(cls, name, bases, namespace, shape: Shape=..., view_class:_T_ViewClass=..., **kwargs) -> Self:
         ...
 
     def as_shape(cls) -> Shape:
@@ -48,35 +53,149 @@ class EnumMeta(ShapeCastable, py_enum.EnumMeta):
         """
         ...
 
-    def __call__(cls, value) -> Value:
+    @overload
+    def __call__(cls: type[_T], value: int) -> _T:
+        ...
+
+    @overload
+    def __call__(cls: type[_T], value: _T) -> _T:
+        ...
+
+    @overload
+    def __call__(cls: EnumMeta[None], value: int | ValueLike) -> Value:
+        ...
+
+    @overload
+    def __call__(cls: EnumMeta[_T_ViewClass], value: int | ValueLike) -> _T_ViewClass:
+        ...
+
+    def __call__(cls, value: int | ValueLike) -> Value | ValueCastable:
         ...
 
     def const(cls, init) -> Const:
         ...
 
 
-
-class Enum(py_enum.Enum, metaclass=EnumMeta):
+class Enum(py_enum.Enum, metaclass=EnumMeta[EnumView]):
     """Subclass of the standard :class:`enum.Enum` that has :class:`EnumMeta` as
     its metaclass."""
     ...
 
 
-class IntEnum(py_enum.IntEnum, metaclass=EnumMeta):
+class IntEnum(py_enum.IntEnum, metaclass=EnumMeta[None]):
     """Subclass of the standard :class:`enum.IntEnum` that has :class:`EnumMeta` as
     its metaclass."""
     ...
 
 
-class Flag(py_enum.Flag, metaclass=EnumMeta):
+class Flag(py_enum.Flag, metaclass=EnumMeta[FlagView]):
     """Subclass of the standard :class:`enum.Flag` that has :class:`EnumMeta` as
     its metaclass."""
     ...
 
 
-class IntFlag(py_enum.IntFlag, metaclass=EnumMeta):
+class IntFlag(py_enum.IntFlag, metaclass=EnumMeta[None]):
     """Subclass of the standard :class:`enum.IntFlag` that has :class:`EnumMeta` as
     its metaclass."""
     ...
 
 
+class EnumView(ValueCastable, Generic[_T]):
+    """The view class used for :class:`Enum`.
+
+    Wraps a :class:`Value` and only allows type-safe operations. The only operators allowed are
+    equality comparisons (``==`` and ``!=``) with another :class:`EnumView` of the same enum type.
+    """
+
+    def __init__(self, enum: _T, target: ValueLike):
+        ...
+
+    def shape(self) -> _T:
+        ...
+
+    @ValueCastable.lowermethod
+    def as_value(self) -> Value:
+        ...
+
+    def eq(self, other: ValueLike) -> Assign:
+        ...
+
+    def __eq__(self, other: FlagView[_T] | _T) -> Value:
+        """Compares the underlying value for equality.
+
+        The other operand has to be either another :class:`EnumView` with the same enum type, or
+        a plain value of the underlying enum.
+
+        Returns
+        -------
+        :class:`Value`
+            The result of the equality comparison, as a single-bit value.
+        """
+        ...
+
+    def __ne__(self, other: FlagView[_T] | _T) -> Value:
+        ...
+
+
+
+class FlagView(EnumView[_T], Generic[_T]):
+    """The view class used for :class:`Flag`.
+
+    In addition to the operations allowed by :class:`EnumView`, it allows bitwise operations among
+    values of the same enum type."""
+
+    def __invert__(self) -> FlagView[_T]:
+        """Inverts all flags in this value and returns another :ref:`FlagView`.
+
+        Note that this is not equivalent to applying bitwise negation to the underlying value:
+        just like the Python :class:`enum.Flag` class, only bits corresponding to flags actually
+        defined in the enumeration are included in the result.
+
+        Returns
+        -------
+        :class:`FlagView`
+        """
+        ...
+
+    def __and__(self, other: FlagView[_T] | _T) -> FlagView[_T]:
+        """Performs a bitwise AND and returns another :class:`FlagView`.
+
+        The other operand has to be either another :class:`FlagView` of the same enum type, or
+        a plain value of the underlying enum type.
+
+        Returns
+        -------
+        :class:`FlagView`
+        """
+        ...
+
+    def __or__(self, other: FlagView[_T] | _T) -> FlagView[_T]:
+        """Performs a bitwise OR and returns another :class:`FlagView`.
+
+        The other operand has to be either another :class:`FlagView` of the same enum type, or
+        a plain value of the underlying enum type.
+
+        Returns
+        -------
+        :class:`FlagView`
+        """
+        ...
+
+    def __xor__(self, other: FlagView[_T] | _T) -> FlagView[_T]:
+        """Performs a bitwise XOR and returns another :class:`FlagView`.
+
+        The other operand has to be either another :class:`FlagView` of the same enum type, or
+        a plain value of the underlying enum type.
+
+        Returns
+        -------
+        :class:`FlagView`
+        """
+        ...
+
+    __rand__ = __and__
+    __ror__ = __or__
+    __rxor__ = __xor__
+
+
+

stubs/amaranth/lib/fifo.pyi

@@ -4,7 +4,7 @@ This type stub file was generated by pyright.
 
 from .. import *
 from ..asserts import *
-from coreblocks.utils import HasElaborate
+from transactron.utils import HasElaborate
 
 """First-in first-out queues."""
 __all__ = ["FIFOInterface", "SyncFIFO", "SyncFIFOBuffered", "AsyncFIFO", "AsyncFIFOBuffered"]

stubs/amaranth/lib/scheduler.pyi

@@ -1,5 +1,5 @@
 from .. import *
-from coreblocks.utils import HasElaborate
+from transactron.utils import HasElaborate
 
 class RoundRobin(Elaboratable):
     count: int

transactron/lib/transformers.py

@@ -20,7 +20,7 @@
 ]
 
 
-class Transformer(ABC):
+class Transformer(ABC, Elaboratable):
     """Method transformer abstract class.
 
     Method transformers construct a new method which utilizes other methods.
@@ -46,7 +46,7 @@ def use(self, m: ModuleLike):
         return self.method
 
 
-class MethodMap(Transformer, Elaboratable):
+class MethodMap(Transformer):
     """Bidirectional map for methods.
 
     Takes a target method and creates a transformed method which calls the
@@ -102,7 +102,7 @@ def _(arg):
         return m
 
 
-class MethodFilter(Transformer, Elaboratable):
+class MethodFilter(Transformer):
     """Method filter.
 
     Takes a target method and creates a method which calls the target method
@@ -176,7 +176,7 @@ def _(arg):
         return m
 
 
-class MethodProduct(Transformer, Elaboratable):
+class MethodProduct(Transformer):
     def __init__(
         self,
         targets: list[Method],
@@ -224,7 +224,7 @@ def _(arg):
         return m
 
 
-class MethodTryProduct(Transformer, Elaboratable):
+class MethodTryProduct(Transformer):
     def __init__(
         self,
         targets: list[Method],
@@ -276,7 +276,7 @@ def _(arg):
         return m
 
 
-class Collector(Transformer, Elaboratable):
+class Collector(Transformer):
     """Single result collector.
 
     Creates method that collects results of many methods with identical