OpenRAM/compiler/router/cell.py

46 lines
1.0 KiB
Python

class cell:
"""
A single cell that can be occupied in a given layer, blocked,
visited, etc.
"""
def __init__(self):
self.visited = False
self.path = False
self.blocked = False
self.source = False
self.target = False
# -1 means it isn't visited yet
self.min_cost = -1
def reset(self):
"""
Reset the dynamic info about routing. The pins/blockages are not reset so
that they can be reused.
"""
self.visited=False
self.min_cost=-1
self.min_path=None
self.blocked=False
self.source=False
self.target=False
def get_type(self):
if self.blocked:
return "X"
if self.source:
return "S"
if self.target:
return "T"
if self.path:
return "P"
# We can display the cost of the frontier
if self.min_cost > 0:
return self.min_cost
return None