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Brandon Rozek 2024-05-29 13:50:20 -04:00
parent 6bb863da97
commit df5b0f5161
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5 changed files with 121 additions and 53 deletions
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36
logic.py
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@ -1,4 +1,4 @@
from typing import Set, Tuple
from typing import Optional, Set, Tuple
from functools import lru_cache
class Operation:
@ -9,10 +9,10 @@ class Operation:
def immutable(self, name, value):
raise Exception("Operations are immutable")
self.__setattr__ = immutable
def __hash__(self):
return self.hashed_value
def __call__(self, *args):
# Ensure the arity is met
assert len(args) == self.arity
@ -20,7 +20,7 @@ class Operation:
for t in args:
assert isinstance(t, Term)
return OpTerm(self, args)
class Term:
def __init__(self):
@ -35,7 +35,7 @@ class PropositionalVariable(Term):
def immutable(self, name, value):
raise Exception("Propositional variables are immutable")
self.__setattr__ = immutable
def __hash__(self):
return self.hashed_value
@ -53,10 +53,10 @@ class OpTerm(Term):
def immutable(self, name, value):
raise Exception("Terms are immutable")
self.__setattr__ = immutable
def __hash__(self):
return self.hashed_value
def __str__(self):
arg_strs = [str(a) for a in self.arguments]
return self.operation.symbol + "(" + ",".join(arg_strs) + ")"
@ -72,13 +72,13 @@ class Inequation:
self.antecedant = antecedant
self.consequent = consequent
def __str__(self):
return str(self.antecedant) + "≤" + str(self.consequent)
return str(self.antecedant) + "≤" + str(self.consequent)
class InequalityRule:
def __init__(self, premises : Set[Inequation], conclusion: Inequation):
self.premises = premises
self.conclusion = conclusion
def __str__(self):
str_premises = [str(p) for p in self.premises]
str_premises2 = "{" + ",".join(str_premises) + "}"
@ -88,16 +88,22 @@ class Rule:
def __init__(self, premises : Set[Term], conclusion: Term):
self.premises = premises
self.conclusion = conclusion
def __str__(self):
str_premises = [str(p) for p in self.premises]
str_premises2 = "{" + ",".join(str_premises) + "}"
return str(str_premises2) + "=>" + str(self.conclusion)
class Logic:
def __init__(self, operations: Set[Operation], rules: Set[Rule]):
def __init__(self,
operations: Set[Operation], rules: Set[Rule],
name: Optional[str] = None):
self.operations = operations
self.rules = rules
self.name = str(abs(hash((
frozenset(operations),
frozenset(rules)
))))[:5] if name is None else name
def get_prop_var_from_term(t: Term) -> Set[PropositionalVariable]:
@ -107,7 +113,7 @@ def get_prop_var_from_term(t: Term) -> Set[PropositionalVariable]:
result: Set[PropositionalVariable] = set()
for arg in t.arguments:
result |= get_prop_var_from_term(arg)
return result
@lru_cache
@ -118,7 +124,7 @@ def get_propostional_variables(rules: Tuple[Rule]) -> Set[PropositionalVariable]
# Get all vars in premises
for premise in rule.premises:
vars |= get_prop_var_from_term(premise)
# Get vars in conclusion
vars |= get_prop_var_from_term(rule.conclusion)
@ -127,9 +133,9 @@ def get_propostional_variables(rules: Tuple[Rule]) -> Set[PropositionalVariable]
def get_operations_from_term(t: Term) -> Set[Operation]:
if isinstance(t, PropositionalVariable):
return set()
result: Set[Operation] = {t.operation,}
for arg in t.arguments:
result |= get_operations_from_term(arg)
return result