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Change Bool is_true and is_false implementations to avoid backends #527

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Change Bool is_true and is_false implementations to avoid backends #527

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79b61f2
Change Bool is_true and is_false implementations to avoid backends
twizmwazin Oct 2, 2024
eddf1ab
Use the right true and false
twizmwazin Oct 2, 2024
d358a92
Allow bool types in is_true and is_false
twizmwazin Oct 2, 2024
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15 changes: 7 additions & 8 deletions claripy/ast/bool.py
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Original file line number Diff line number Diff line change
@@ -1,14 +1,13 @@
from __future__ import annotations

import logging
from contextlib import suppress
from functools import lru_cache
from typing import TYPE_CHECKING, overload

import claripy
from claripy import operations
from claripy.ast.base import ASTCacheKey, Base, _make_name
from claripy.errors import BackendError, ClaripyTypeError
from claripy.errors import ClaripyTypeError

from .bits import Bits

Expand Down Expand Up @@ -163,17 +162,17 @@ def If(cond, true_value, false_value):
Bool.__ror__ = Or


def is_true(e, exact=None): # pylint:disable=unused-argument
with suppress(BackendError):
return claripy.backends.concrete.is_true(e)
def is_true(e):
if e is True or (isinstance(e, Base) and claripy.simplify(e) is true()):
return True

log.debug("Unable to tell the truth-value of this expression")
return False


def is_false(e, exact=None): # pylint:disable=unused-argument
with suppress(BackendError):
return claripy.backends.concrete.is_false(e)
def is_false(e):
if e is False or (isinstance(e, Base) and claripy.simplify(e) is false()):
return True

log.debug("Unable to tell the truth-value of this expression")
return False
Expand Down
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