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back.rtlil: implement Part.

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This commit is contained in:
whitequark 2018-12-17 01:05:08 +00:00
parent f968678937
commit 87cd045ac3
3 changed files with 110 additions and 19 deletions
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29
nmigen/hdl/ast.py
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@ -890,13 +890,21 @@ class ValueKey:
def __hash__(self):
if isinstance(self.value, Const):
return hash(self.value)
return hash(self.value.value)
elif isinstance(self.value, Signal):
return hash(id(self.value))
elif isinstance(self.value, Operator):
return hash((self.value.op, tuple(ValueKey(o) for o in self.value.operands)))
elif isinstance(self.value, Slice):
return hash((ValueKey(self.value.value), self.value.start, self.value.end))
elif isinstance(self.value, Part):
return hash((ValueKey(self.value.value), ValueKey(self.value.offset),
self.value.width))
elif isinstance(self.value, Cat):
return hash(tuple(ValueKey(o) for o in self.value.operands))
else: # :nocov:
raise TypeError("Object '{!r}' cannot be used as a key in value collections")
raise TypeError("Object '{!r}' cannot be used as a key in value collections"
.format(self.value))
def __eq__(self, other):
if not isinstance(other, ValueKey):
@ -905,15 +913,28 @@ class ValueKey:
return False
if isinstance(self.value, Const):
return self.value == other.value
return self.value.value == other.value.value
elif isinstance(self.value, Signal):
return id(self.value) == id(other.value)
elif isinstance(self.value, Operator):
return (self.value.op == other.value.op and
len(self.value.operands) == len(other.value.operands) and
all(ValueKey(a) == ValueKey(b)
for a, b in zip(self.value.operands, other.value.operands)))
elif isinstance(self.value, Slice):
return (ValueKey(self.value.value) == ValueKey(other.value.value) and
self.value.start == other.value.start and
self.value.end == other.value.end)
elif isinstance(self.value, Part):
return (ValueKey(self.value.value) == ValueKey(other.value.value) and
ValueKey(self.value.offset) == ValueKey(other.value.offset) and
self.value.width == other.value.width)
elif isinstance(self.value, Cat):
return all(ValueKey(a) == ValueKey(b)
for a, b in zip(self.value.operands, other.value.operands))
else: # :nocov:
raise TypeError("Object '{!r}' cannot be used as a key in value collections")
raise TypeError("Object '{!r}' cannot be used as a key in value collections"
.format(self.value))
def __lt__(self, other):
if not isinstance(other, ValueKey):