174 lines
5.1 KiB
Python
174 lines
5.1 KiB
Python
import sys
|
|
import csv
|
|
from tokenize import Comment
|
|
|
|
from numpy import append
|
|
|
|
DEBUG = False
|
|
alfabet = "abc"
|
|
EPS = "<eps>"
|
|
|
|
# sys.setrecursionlimit(4100)
|
|
|
|
|
|
def print_debug(*args, **kwargs):
|
|
if DEBUG:
|
|
print(*args, **kwargs)
|
|
|
|
|
|
if len(sys.argv) == 1:
|
|
print("Default arguments parsed\n")
|
|
sys.argv.append("simple2.arg")
|
|
sys.argv.append("simple2.in")
|
|
sys.argv.append("simple2.exp")
|
|
|
|
with open(sys.argv[1], mode="r", newline="", encoding="utf8") as csvfile:
|
|
filereader = csv.reader(csvfile, delimiter="\t", quotechar="|")
|
|
fsa_description = list(filereader)
|
|
|
|
# skip first line with comment
|
|
if fsa_description[0][0][0] == "#":
|
|
fsa_description = fsa_description[1:]
|
|
|
|
# get accepting states
|
|
accepting_state = []
|
|
for item in reversed(fsa_description):
|
|
if len(item) == 1:
|
|
accepting_state.append(item[0])
|
|
else:
|
|
break
|
|
|
|
fsa_description = fsa_description[: -len(accepting_state)]
|
|
|
|
fsa_description_map: dict[tuple[str, str], list[str]] = {}
|
|
is_error = False
|
|
for num, item in enumerate(fsa_description):
|
|
if EPS in item[2]:
|
|
item[2] = item[2].replace(EPS, "")
|
|
tuple = (item[0], EPS)
|
|
if (item[0], EPS) in fsa_description_map:
|
|
print_debug(
|
|
f"WARNING - duplicate letter: key = ({item[0]} | {EPS}) | line: {num + 1}"
|
|
)
|
|
# append to description map or create it if it doesn't exist
|
|
fsa_description_map[tuple] = fsa_description_map.get(tuple, []) + [item[1]]
|
|
|
|
for letter in item[2]:
|
|
if letter not in alfabet:
|
|
print_debug(
|
|
"WARNING - letter not in alfabet: ", letter, "| line:", num + 1
|
|
)
|
|
tuple = (item[0], letter)
|
|
if (item[0], letter) in fsa_description_map:
|
|
print_debug(
|
|
f"WARNING - duplicate letter: key = ({item[0]} | {letter}) | line: {num + 1}"
|
|
)
|
|
# append to description map or create it if it doesn't exist
|
|
fsa_description_map[tuple] = fsa_description_map.get(tuple, []) + [item[1]]
|
|
|
|
if is_error:
|
|
exit(-1)
|
|
|
|
states = {}
|
|
for item in fsa_description_map:
|
|
states[item[0]] = states[item[0]] + item[1] if item[0] in states else item[1]
|
|
|
|
|
|
from collections import Counter
|
|
|
|
|
|
# check if all letters are used once
|
|
def is_permutation(str1, str2):
|
|
return Counter(str1) == Counter(str2)
|
|
|
|
|
|
def find_missing_letters(str1, str2) -> str:
|
|
missing_letters = ""
|
|
for char in str2:
|
|
if char not in str1:
|
|
missing_letters += char
|
|
return missing_letters
|
|
|
|
|
|
for state in states:
|
|
if not is_permutation(states[state], alfabet):
|
|
print_debug(
|
|
f"WARNING - state {state} doesn't match full alphabet: {states[state]} | {alfabet} | diff - {find_missing_letters(states[state], alfabet)}"
|
|
)
|
|
# exit(-1)
|
|
|
|
|
|
with open(sys.argv[2], mode="r", newline="", encoding="utf8") as file:
|
|
content = file.read()
|
|
test_in = content.splitlines()
|
|
|
|
with open(sys.argv[3], mode="r", newline="", encoding="utf8") as file:
|
|
content = file.read()
|
|
test_out = content.splitlines()
|
|
for i, _ in enumerate(test_out):
|
|
test_out[i] = test_out[i].split(" ")[0]
|
|
|
|
|
|
def is_correct(current_state: str) -> bool:
|
|
if current_state in accepting_state:
|
|
return True
|
|
return False
|
|
|
|
|
|
def find_final_state(current_state: str, word: str, letter: str) -> str:
|
|
next_states = fsa_description_map[(current_state, letter)]
|
|
for next_state in next_states:
|
|
if letter != EPS:
|
|
word = word[1:]
|
|
current_state = traverse_states(next_state, word)
|
|
if is_correct(current_state):
|
|
return current_state # found a correct state
|
|
return current_state
|
|
|
|
|
|
def traverse_states(current_state: str, word: str) -> str:
|
|
if word == "" and (current_state, EPS) not in fsa_description_map:
|
|
return current_state
|
|
|
|
if (current_state, EPS) in fsa_description_map:
|
|
final_state = find_final_state(current_state, word, EPS)
|
|
if is_correct(final_state):
|
|
return final_state # found a correct state
|
|
|
|
letter = word[0]
|
|
if (current_state, letter) not in fsa_description_map:
|
|
return "-1" # unspecified next state
|
|
|
|
final_state = find_final_state(current_state, word, letter)
|
|
if is_correct(final_state):
|
|
return final_state # found a correct state
|
|
return "-2" # no correct state found
|
|
|
|
|
|
is_difference = []
|
|
for i, word in enumerate(test_in):
|
|
current_state = "0"
|
|
if len(word) != 0:
|
|
current_state = traverse_states(current_state, word)
|
|
|
|
print(str(i + 1) + "\t", end="")
|
|
|
|
if current_state == "-3":
|
|
print("FATAL ERROR")
|
|
exit(-1)
|
|
|
|
if current_state in accepting_state:
|
|
print("YES\t", end="")
|
|
if "YES" != test_out[i] and "TRUE" != test_out[i]:
|
|
print("ERROR", word, end="")
|
|
is_difference.append(i + 1)
|
|
else:
|
|
print("NO\t", end="")
|
|
if "NO" != test_out[i] and "FALSE" != test_out[i]:
|
|
print("ERROR", word, end="")
|
|
is_difference.append(i + 1)
|
|
print()
|
|
|
|
if len(is_difference) != 0:
|
|
print(is_difference)
|