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#!/usr/bin/env python3
import fileinput
import re
intext = []
for line in fileinput.input():
line = re.sub("//.*", "", line)
intext.append(line)
def skip_whitespace(text, cursor):
while cursor < len(text) and text[cursor] in [" ", "\t", "\r", "\n"]:
cursor += 1
return cursor
def parse_sdf(text, cursor):
cursor = skip_whitespace(text, cursor)
if cursor < len(text) and text[cursor] == "(":
expr = []
cursor += 1
while cursor < len(text) and text[cursor] != ")":
child, cursor = parse_sdf(text, cursor)
expr.append(child)
cursor = skip_whitespace(text, cursor)
return expr, cursor+1
if cursor < len(text) and text[cursor] == '"':
expr = '"'
cursor += 1
while cursor < len(text) and text[cursor] != '"':
expr += text[cursor]
cursor += 1
return expr + '"', cursor+1
expr = ""
while cursor < len(text) and text[cursor] not in [" ", "\t", "\r", "\n", "(", ")"]:
expr += text[cursor]
cursor += 1
return expr, cursor
def sdf_to_string(expr):
if type(expr) is list:
tokens = []
tokens.append("(")
first_child = True
for child in expr:
if not first_child:
tokens.append(" ")
tokens.append(sdf_to_string(child))
first_child = False
tokens.append(")")
return "".join(tokens)
else:
return expr
def dump_sdf(expr, indent=""):
if type(expr) is list:
if len(expr) > 0 and expr[0] in ["IOPATH", "SETUP", "HOLD", "CELLTYPE", "INSTANCE", "SDFVERSION",
"DESIGN", "DATE", "VENDOR", "DIVIDER", "TIMESCALE", "RECOVERY", "REMOVAL"]:
print(indent + sdf_to_string(expr))
else:
print("%s(%s" % (indent, expr[0] if len(expr) > 0 else ""))
for child in expr[1:]:
dump_sdf(child, indent + " ")
print("%s)" % indent)
else:
print("%s%s" % (indent, expr))
sdfdata, _ = parse_sdf("".join(intext), 0)
def generalize_instances(expr):
if type(expr) is list:
if len(expr) == 2 and expr[0] == "INSTANCE":
expr[1] = "*"
for child in expr:
generalize_instances(child)
generalize_instances(sdfdata)
def list_to_tuple(expr):
if type(expr) is list:
tup = []
for child in expr:
tup.append(list_to_tuple(child))
return tuple(tup)
return expr
def uniquify_cells(expr):
cache = set()
filtered_expr = []
for child in expr:
t = list_to_tuple(child)
if t not in cache:
filtered_expr.append(child)
cache.add(t)
return filtered_expr
sdfdata = uniquify_cells(sdfdata)
# dump_sdf(sdfdata)
iopaths = dict()
for cell in sdfdata:
if cell[0] != "CELL":
continue
celltype = None
for stmt in cell:
if stmt[0] == "CELLTYPE":
celltype = stmt[1][1:-1]
if celltype.startswith("PRE_IO_PIN_TYPE_"):
celltype = "PRE_IO_PIN_TYPE"
if celltype.startswith("Span4Mux"):
if celltype == "Span4Mux":
celltype = "Span4Mux_v4"
elif celltype == "Span4Mux_v":
celltype = "Span4Mux_v4"
elif celltype == "Span4Mux_h":
celltype = "Span4Mux_h4"
else:
match = re.match("Span4Mux_s(.*)_(h|v)", celltype)
celltype = "Span4Mux_%c%d" % (match.group(2), int(match.group(1)))
if celltype.startswith("Span12Mux"):
if celltype == "Span12Mux":
celltype = "Span12Mux_v12"
elif celltype == "Span12Mux_v":
celltype = "Span12Mux_v12"
elif celltype == "Span12Mux_h":
celltype = "Span12Mux_h12"
else:
match = re.match("Span12Mux_s(.*)_(h|v)", celltype)
celltype = "Span12Mux_%c%d" % (match.group(2), int(match.group(1)))
iopaths.setdefault(celltype, set())
if stmt[0] == "DELAY":
assert stmt[1][0] == "ABSOLUTE"
for iopath in stmt[1][1:]:
assert iopath[0] == "IOPATH"
iopaths[celltype].add(sdf_to_string(iopath))
if stmt[0] == "TIMINGCHECK":
for iopath in stmt[1:]:
iopaths[celltype].add(sdf_to_string(iopath))
convert = lambda text: int(text) if text.isdigit() else text.lower()
alphanum_key = lambda key: [ convert(c) for c in re.split('([0-9]+)', key) ]
alphanum_key_list = lambda l: [len(l)] + [ alphanum_key(s) for s in l ]
for celltype in sorted(iopaths, key=alphanum_key):
print("CELL %s" % celltype)
path_list = list()
path_list_lens = list()
for iopath in iopaths[celltype]:
iopath = iopath.replace("(posedge ", "posedge:")
iopath = iopath.replace("(negedge ", "negedge:")
iopath = iopath.replace("(", "")
iopath = iopath.replace(")", "")
iopath = iopath.split()
for i in range(len(iopath)):
if i < len(path_list_lens):
path_list_lens[i] = max(path_list_lens[i], len(iopath[i]))
else:
path_list_lens.append(len(iopath[i]))
path_list.append(iopath)
for iopath in sorted(path_list, key=alphanum_key_list):
for i in range(len(iopath)):
print("%s%-*s" % (" " if i != 0 else "", path_list_lens[i] if i != len(iopath)-1 else 0, iopath[i]), end="")
print()
print()
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