76 lines
1.9 KiB
Python
76 lines
1.9 KiB
Python
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from .structure import *
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class Namespace:
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def __init__(self):
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self.counts = {}
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self.sigs = {}
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def GetName(self, sig):
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try:
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n = self.sigs[sig]
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if n:
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return sig.name + "_" + str(n)
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else:
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return sig.name
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except KeyError:
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try:
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n = self.counts[sig.name]
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except KeyError:
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n = 0
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self.sigs[sig] = n
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self.counts[sig.name] = n + 1
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if n:
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return sig.name + "_" + str(n)
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else:
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return sig.name
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def ListSignals(node):
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if isinstance(node, Constant):
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return set()
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elif isinstance(node, Signal):
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return {node}
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elif isinstance(node, Operator):
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l = list(map(ListSignals, node.operands))
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return set().union(*l)
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elif isinstance(node, Slice):
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return ListSignals(node.value)
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elif isinstance(node, Cat):
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l = list(map(ListSignals, node.l))
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return set().union(*l)
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elif isinstance(node, Assign):
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return ListSignals(node.l) | ListSignals(node.r)
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elif isinstance(node, StatementList):
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l = list(map(ListSignals, node.l))
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return set().union(*l)
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elif isinstance(node, If):
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return ListSignals(node.cond) | ListSignals(node.t) | ListSignals(node.f)
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elif isinstance(node, Fragment):
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return ListSignals(node.comb) | ListSignals(node.sync)
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else:
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raise TypeError
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def ListTargets(node):
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if isinstance(node, Signal):
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return {node}
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elif isinstance(node, Slice):
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return ListTargets(node.value)
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elif isinstance(node, Cat):
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l = list(map(ListTargets, node.l))
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return set().union(*l)
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elif isinstance(node, Assign):
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return ListTargets(node.l)
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elif isinstance(node, StatementList):
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l = list(map(ListTargets, node.l))
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return set().union(*l)
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elif isinstance(node, If):
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return ListTargets(node.t) | ListTargets(node.f)
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else:
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raise TypeError
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def InsertReset(rst, sl):
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targets = ListTargets(sl)
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resetcode = []
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for t in targets:
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if not t.variable:
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resetcode.append(Assign(t, t.reset))
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return If(rst == 1, resetcode, sl)
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