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ascendforever 2025-08-26 13:21:32 -04:00
parent 1bf4985070
commit 21b3ee6f25
1 changed files with 27 additions and 10 deletions
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33
main.py
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@ -61,11 +61,17 @@ class DPDA(abc.ABC):
for l in ('START', 'END'):
if not hasattr(cls, f'{l}_STATE'):
raise TypeError(f"{l}_STATE must be defined in subclass")
cls.R_RULES = r_rules = frozenset(itertools.chain.from_iterable((t[3] for t in d.values() if t[3]) for d in cls.DELTA.values()))
cls.R_RULES = r_rules = frozenset(itertools.chain.from_iterable(
(t[3] for t in d.values() if t[3])
for d in cls.DELTA.values()
))
cls.R_RULE_USED_FORMAT_WIDTH = max(len('R'), max(map(len, r_rules)))
cls.DELTA_RULE_COUNT = drc = sum(map(len, cls.DELTA.values()))
cls.DELTA_RULE_USED_FORMAT_WIDTH = max(len('Delta'), len(str(drc)))
cls.STATES = states = frozenset(itertools.chain((cls.START_STATE,cls.END_STATE), cls.DELTA.keys()))
cls.STATES = states = frozenset(itertools.chain(
(cls.START_STATE,cls.END_STATE),
cls.DELTA.keys()
))
cls.STATE_FORMAT_WIDTH = max(len('State'), max(map(len, states)))
@ -74,8 +80,12 @@ class DPDA(abc.ABC):
def __repr__(self) -> str:
return (
f"<{self.__class__.__name__}() "
f"step={self.step} state={self.state} input={''.join(self.input)} stack={''.join(self.stack)} "
f"delta_rule_used={self.delta_rule_used!r} r_rule_used={self.r_rule_used!r}>"
f"step={self.step} "
f"state={self.state} "
f"input={''.join(self.input)} "
f"stack={''.join(self.stack)} "
f"delta_rule_used={self.delta_rule_used!r} "
f"r_rule_used={self.r_rule_used!r}>"
)
def reset(self) -> None:
@ -99,7 +109,7 @@ class DPDA(abc.ABC):
return self._input
@input.setter
def input(self, value) -> None:
self._input = value = collections.deque(value) if value else collections.deque()
self._input = value = collections.deque(value or ())
self._stack_format_width = max(len('Stack'), round((len(value)-1)/2) + 2)
self._input_format_width = max(len('Unread input'), len(value))
@ -176,7 +186,9 @@ class DPDA(abc.ABC):
stack_top = self.stack[0] if self.stack else None
# determine what needs to be done
for (take_input,take_stack), (new_state,add_to_stack,new_delta_rule_used,new_r_rule_used) in self.__class__.DELTA[self.state].items():
for k, v in self.__class__.DELTA[self.state].items():
take_input,take_stack = k
new_state,add_to_stack,new_delta_rule_used,new_r_rule_used = v
if (not take_input or take_input == input_front) and (not take_stack or take_stack == stack_top):
break # compatible choice
else: # no match found
@ -227,7 +239,12 @@ class DPDA(abc.ABC):
bdc=bdc
)
def table_output_end(self, bdc=UTF8_BOX_DRAWING_CHARACTERS) -> str:
return self.fmt_step(join=bdc['bar_up'], bdc=bdc, left=bdc['corner_bottom_left'], right=bdc['corner_bottom_right']).replace(' ', bdc['hr'])
return self.fmt_step(
join=bdc['bar_up'],
bdc=bdc,
left=bdc['corner_bottom_left'],
right=bdc['corner_bottom_right']
).replace(' ', bdc['hr'])
@property
def table_output_width(self) -> int:
@ -291,7 +308,7 @@ class ProjectDPDA(DPDA):
def main() -> int:
args = sys.argv[1:]
if not args or any(v in ('-h', '--help') for v in sys.argv[1:]):
if not args or any(v in ('-h', '--help') for v in args):
import textwrap
import os
file = os.path.basename(__file__)