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Clarifying the parsing transition system

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Brandon Rozek 2024-10-25 14:52:12 -04:00
parent 312e1aeda5
commit 4e4e19e117
1 changed files with 186 additions and 139 deletions
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325
parse_magic.py
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@ -21,12 +21,19 @@ class SourceFile:
def __init__(self, fileobj: TextIO):
self.fileobj = fileobj
self.current_line = 0
self.reststr = ""
def __next__(self):
if self.reststr != "":
return self.reststr
contents = next(self.fileobj)
self.current_line += 1
return contents
def set_reststr(self, reststr: str):
self.reststr = reststr
class UglyHeader:
def __init__(self, negation: bool, necessitation: bool, custom_model_functions: List[Tuple[int, str]]):
self.negation = negation
@ -48,135 +55,212 @@ class ModelBuilder:
self.mimplication: Optional[ModelFunction] = None
self.num_necessitation: int = 0
self.mnecessitation: Optional[ModelFunction] = None
self.custom_model_functions: List[Tuple[int, ModelFunction]]
class Stage:
def __init__(self, name: str):
self.name = name
self.next: Optional['Stage'] = None
self.previous: Optional['Stage'] = None
def __str__(self):
return self.name
class Stages:
def __init__(self):
self.stages: Dict[str, Stage] = {}
self.last_stage: Optional[Stage] = None
def add(self, name: str):
stage = Stage(name)
stage.next = stage
if self.last_stage is not None:
stage.previous = self.last_stage
self.last_stage.next = stage
else:
stage.previous = Stage("end")
self.stages[name] = stage
self.last_stage = stage
def next_stage(self, name):
return self.stages[name].next
def previous_stage(self, name):
return self.stages[name].previous
def get(self, name):
return self.stages[name]
def derive_stages(header: UglyHeader) -> Stages:
stages = Stages()
stages.add("size")
if header.negation:
stages.add("negation")
stages.add("order")
stages.add("designated")
stages.add("implication")
if header.necessitation:
stages.add("necessitation")
# TODO: Can't use -- as that can be a custom symbol
# for (acidity, symbol) in header.custom_model_functions:
# stages.add(f"custom--{acidity}--{symbol}")
stages.add("process_model")
# After processing the model, go to the previous stage
stages.get("process_model").next = stages.get("process_model").previous
return stages
def parse_matrices(infile: SourceFile) -> List[Tuple[Model, Dict]]:
solutions = [] # Reset
header = parse_header(infile)
stages = derive_stages(header)
first_run = True
current_model_parts = ModelBuilder()
process_sizes(infile, header, current_model_parts, solutions)
stage = stages.get("size")
while True:
print("Current stage:", stage)
match stage.name:
case "end":
break
case "process_model":
process_model(current_model_parts, solutions)
stage = stage.next
case "size":
processed = process_sizes(infile, current_model_parts, first_run)
first_run = False
stage = stage.next if processed else stage.previous
case "negation":
processed = process_negations(infile, current_model_parts)
stage = stage.next if processed else stage.previous
case "order":
processed = process_orders(infile, current_model_parts)
stage = stage.next if processed else stage.previous
case "designated":
processed = process_designateds(infile, current_model_parts)
stage = stage.next if processed else stage.previous
case "implication":
processed = process_implications(infile, current_model_parts)
stage = stage.next if processed else stage.previous
case "necessitation":
processed = process_necessitations(infile, current_model_parts)
stage = stage.next if processed else stage.previous
case _:
raise NotImplementedError("Custom Connectives are not yet supported")
return solutions
def process_sizes(infile: SourceFile, header: UglyHeader, current_model_parts: ModelBuilder, solutions: List[Tuple[Model, Dict]]):
"""Stage 1"""
def process_sizes(infile: SourceFile, current_model_parts: ModelBuilder, first_run: bool) -> bool:
try:
size = parse_size(infile, first_run)
except StopIteration:
return False
if size is None:
return False
first_run = True
carrier_set = carrier_set_from_size(size)
current_model_parts.size = size
current_model_parts.carrier_set = carrier_set
while True:
print("Processing next size")
try:
size = parse_size(infile, first_run)
first_run = False
except StopIteration:
# For some reason, when necessitation is enabled this doesn't
# have a -1 on the last line
break
if size is None:
break
# Reset counts
current_model_parts.num_negation = 0
current_model_parts.num_order = 0
current_model_parts.num_designated = 0
current_model_parts.num_implication = 0
current_model_parts.num_necessitation = 0
carrier_set = carrier_set_from_size(size)
current_model_parts.size = size
current_model_parts.carrier_set = carrier_set
process_negations(infile, header, current_model_parts, solutions)
return True
def process_negations(infile: SourceFile, header: UglyHeader, current_model_parts: ModelBuilder, solutions: List[Tuple[Model, Dict]]):
def process_negations(infile: SourceFile, current_model_parts: ModelBuilder) -> bool:
"""Stage 2 (Optional)"""
num_negation = 0
while True:
print("Processing next negation")
mnegation = None
if header.negation:
mnegation = parse_single_negation(infile, current_model_parts.size)
if mnegation is None:
break
num_negation += 1
mnegation = parse_single_negation(infile, current_model_parts.size)
if mnegation is None:
return False
current_model_parts.num_negation = num_negation
current_model_parts.mnegation = mnegation
current_model_parts.num_negation += 1
current_model_parts.mnegation = mnegation
process_orders(infile, header, current_model_parts, solutions)
# Reset counts
current_model_parts.num_order = 0
current_model_parts.num_designated = 0
current_model_parts.num_implication = 0
current_model_parts.num_necessitation = 0
if not header.negation:
break
return True
def process_orders(infile: SourceFile, header: UglyHeader, current_model_parts: ModelBuilder, solutions: List[Tuple[Model, Dict]]):
def process_orders(infile: SourceFile, current_model_parts: ModelBuilder) -> bool:
"""Stage 3"""
num_order = 0
while True:
print("Processing next order")
result = parse_single_order(infile, current_model_parts.size)
if result is None:
break
num_order += 1
mconjunction, mdisjunction = result
current_model_parts.num_order = num_order
current_model_parts.mconjunction = mconjunction
current_model_parts.mdisjunction = mdisjunction
process_designateds(infile, header, current_model_parts, solutions)
result = parse_single_order(infile, current_model_parts.size)
if result is None:
return False
def process_designateds(infile: SourceFile, header: UglyHeader, current_model_parts: ModelBuilder, solutions: List[Tuple[Model, Dict]]):
mconjunction, mdisjunction = result
current_model_parts.num_order += 1
current_model_parts.mconjunction = mconjunction
current_model_parts.mdisjunction = mdisjunction
# Reset counts
current_model_parts.num_designated = 0
current_model_parts.num_implication = 0
current_model_parts.num_necessitation = 0
return True
def process_designateds(infile: SourceFile, current_model_parts: ModelBuilder) -> bool:
"""Stage 4"""
num_designated = 0
while True:
print("Processing next designated")
designated_values = parse_single_designated(infile, current_model_parts.size)
if designated_values is None:
break
num_designated += 1
current_model_parts.num_designated = num_designated
current_model_parts.designated_values = designated_values
process_implications(infile, header, current_model_parts, solutions)
designated_values = parse_single_designated(infile, current_model_parts.size)
if designated_values is None:
return False
def process_implications(
infile: SourceFile, header: UglyHeader, current_model_parts: ModelBuilder, solutions: List[Tuple[Model, Dict]]):
current_model_parts.num_designated += 1
current_model_parts.designated_values = designated_values
# Reset counts
current_model_parts.num_implication = 0
current_model_parts.num_necessitation = 0
return True
def process_implications(infile: SourceFile, current_model_parts: ModelBuilder) -> bool:
"""Stage 5"""
if header.necessitation:
num_implication = 0
while True:
print("Processing next implication")
instr = next(infile).strip()
mimplication, reststr = parse_single_implication(instr, infile.current_line, current_model_parts.size)
if mimplication is None:
break
num_implication += 1
current_model_parts.num_implication = num_implication
current_model_parts.mimplication = mimplication
process_necessitations(infile, reststr, header, current_model_parts, solutions)
else:
results = parse_implications(infile, current_model_parts.size)
for num_implication, mimplication in enumerate(results, 1):
current_model_parts.num_implication = num_implication
current_model_parts.mimplication = mimplication
process_model(current_model_parts, solutions)
if infile.reststr == "":
infile.reststr = next(infile).strip()
def process_necessitations(infile: SourceFile, instr: str, header: UglyHeader, current_model_parts: ModelBuilder, solutions: List[Tuple[Model, Dict]]):
mimplication, reststr = parse_single_implication(infile.reststr, infile.current_line, current_model_parts.size)
infile.reststr = reststr
if mimplication is None:
return False
# NOTE: For some reason, one necessitation table will be on the same line as the implication table
mnecessitation = parse_single_necessitation_from_str(instr, infile.current_line, current_model_parts.size)
assert mnecessitation is not None, f"Expected Necessitation Table at line {infile.current_line}"
num_necessitation = 1
current_model_parts.num_implication += 1
current_model_parts.mimplication = mimplication
current_model_parts.num_necessitation = num_necessitation
# Reset counts
current_model_parts.num_necessitation = 0
return True
def process_necessitations(infile: SourceFile, current_model_parts: ModelBuilder) -> bool:
# TODO: In progress
if infile.reststr != "":
infile.reststr = next(infile).strip()
# TODO: This should match the implication way of doing things when
# custom conenctives are involved (returning reststr)
mnecessitation, reststr = parse_single_necessitation_from_str(infile.reststr, infile.current_line, current_model_parts.size)
infile.reststr = reststr
if mnecessitation is None:
return False
current_model_parts.num_necessitation += 1
current_model_parts.mnecessitation = mnecessitation
process_model(current_model_parts, solutions)
while True:
print("Processing next necessitation")
mnecessitation = parse_single_necessitation(infile, current_model_parts.size)
if mnecessitation is None:
break
num_necessitation += 1
current_model_parts.num_necessitation = num_necessitation
current_model_parts.mnecessitation = mnecessitation
process_model(current_model_parts, solutions)
return True
def process_model(mp: ModelBuilder, solutions: List[Tuple[Model, Dict]]):
"""Create Model"""
assert mp.mimplication is not None
assert len(mp.carrier_set) > 0
assert mp.size + 1 == len(mp.carrier_set)
logical_operations = { mp.mimplication }
model_name = f"{mp.size}{'.' + str(mp.num_negation) if mp.num_negation != 0 else ''}.{mp.num_order}.{mp.num_designated}.{mp.num_implication}{'.' + str(mp.num_necessitation) if mp.num_necessitation != 0 else ''}"
model_name = f"{mp.size + 1}{'.' + str(mp.num_negation) if mp.num_negation != 0 else ''}.{mp.num_order}.{mp.num_designated}.{mp.num_implication}{'.' + str(mp.num_necessitation) if mp.num_necessitation != 0 else ''}"
model = Model(mp.carrier_set, logical_operations, mp.designated_values, name=model_name)
interpretation = {
Implication: mp.mimplication
@ -216,7 +300,7 @@ def parse_header(infile: SourceFile) -> UglyHeader:
custom_model_functions.append((arity, symbol))
return UglyHeader(negation_defined, necessitation_defined, custom_model_functions)
def carrier_set_from_size(size: int):
def carrier_set_from_size(size: int) -> Set[ModelValue]:
"""
Construct a carrier set of model values
based on the desired size.
@ -261,8 +345,7 @@ def parse_single_negation(infile: SourceFile, size: int) -> Optional[ModelFuncti
return ModelFunction(1, mapping, "¬")
def mvalue_from_index(i: int):
def mvalue_from_index(i: int) -> ModelValue:
"""
Given an index, return the
representation of the model value.
@ -394,7 +477,6 @@ def parse_single_designated(infile: SourceFile, size: int) -> Optional[Set[Model
return designated_values
def parse_single_implication(instr: str, line: int, size: int) -> Tuple[ModelFunction, str]:
"""
Take the current string, parse an implication table from it,
@ -423,40 +505,6 @@ def parse_single_implication(instr: str, line: int, size: int) -> Tuple[ModelFun
reststr = " ".join(table[(size + 1)**2:])
return mimplication, reststr
def parse_implications(infile: SourceFile, size: int) -> List[ModelFunction]:
"""
Parse the line representing the list of implication
tables.
"""
line = next(infile).strip()
# Split and remove the last '-1' character
table = line.split(" ")[:-1]
assert len(table) % (size + 1)**2 == 0, f"Implication table does not match expected size at line {infile.current_line}"
table_i = 0
mimplications: List[ModelFunction] = []
for _ in range(len(table) // (size + 1)**2):
mapping = {}
for i in range(size + 1):
x = mvalue_from_index(i)
for j in range(size + 1):
y = mvalue_from_index(j)
r = parse_mvalue(table[table_i])
table_i += 1
mapping[(x, y)] = r
mimplication = ModelFunction(2, mapping, "→")
mimplications.append(mimplication)
return mimplications
def parse_single_necessitation_from_str(instr: str, line: int, size: int) -> Optional[ModelFunction]:
"""
Parse the line representing the necessitation table.
@ -465,7 +513,7 @@ def parse_single_necessitation_from_str(instr: str, line: int, size: int) -> Opt
return None
row = instr.split(" ")
assert len(row) == size + 1, f"Necessitation table doesn't match size at line {line}"
assert len(row) >= size + 1, f"Necessitation table doesn't match size at line {line}"
mapping = {}
for i, j in zip(range(size + 1), row):
@ -473,11 +521,10 @@ def parse_single_necessitation_from_str(instr: str, line: int, size: int) -> Opt
y = parse_mvalue(j)
mapping[(x, )] = y
return ModelFunction(1, mapping, "!")
mnecessitation = ModelFunction(1, mapping, "!")
reststr = " ".join(row[(size + 1):])
def parse_single_necessitation(infile: SourceFile, size: int) -> Optional[ModelFunction]:
line = next(infile).strip()
return parse_single_necessitation_from_str(line, infile.current_line, size)
return mnecessitation, reststr
if __name__ == "__main__":