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hdl._ast: make Signal.like work properly with ShapeCastables.

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Fixes #1285.
This commit is contained in:
Wanda 2024-04-11 01:49:31 +02:00 • committed by Catherine
parent 0be2dda656
commit c59447c258
2 changed files with 20 additions and 6 deletions
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17
amaranth/hdl/_ast.py
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@ -2177,13 +2177,14 @@ class Signal(Value, DUID, metaclass=_SignalMeta):
Parameters
----------
other : Value
other : ValueLike
Object to base this Signal on.
"""
cast_other = Value.cast(other)
if name is not None:
new_name = str(name)
elif name_suffix is not None:
new_name = other.name + str(name_suffix)
new_name = cast_other.name + str(name_suffix)
else:
new_name = tracer.get_var_name(depth=2 + src_loc_at, default="$like")
# TODO(amaranth-0.7): remove
@ -2196,11 +2197,15 @@ class Signal(Value, DUID, metaclass=_SignalMeta):
if isinstance(other, ValueCastable):
shape = other.shape()
else:
shape = Value.cast(other).shape()
shape = cast_other.shape()
kw = dict(shape=shape, name=new_name)
if isinstance(other, Signal):
kw.update(init=other.init, reset_less=other.reset_less,
attrs=other.attrs, decoder=other.decoder)
if isinstance(cast_other, Signal):
if isinstance(shape, ShapeCastable):
other_init = shape.from_bits(cast_other.init)
else:
other_init = cast_other.init
kw.update(init=other_init, reset_less=cast_other.reset_less,
attrs=cast_other.attrs, decoder=cast_other.decoder)
kw.update(kwargs)
if init is not None:
kw["init"] = init