# ------------------------------------------------------------------------------
# CodeHawk C Analyzer
# Author: Henny Sipma
# ------------------------------------------------------------------------------
# The MIT License (MIT)
#
# Copyright (c) 2017-2020 Kestrel Technology LLC
# Copyright (c) 2020-2022 Henny B. Sipma
# Copyright (c) 2023-2024 Aarno Labs LLC
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# SOFTWARE.
# ------------------------------------------------------------------------------
"""Assumption on a global variable at a particular location."""
from typing import List, TYPE_CHECKING
if TYPE_CHECKING:
from chc.api.CFunctionApi import CFunctionApi
from chc.api.XPredicate import XPredicate
from chc.app.CFunction import CFunction
[docs]class GlobalAssumption:
"""
Assumption on the value of a global variable at a particular location.
Args:
capi (CFunctionApi): the function api of the function that requests
the assumption
id (int): the identification number of the assumption
predicate (XPredicate): predicate on global variable representing the
assumption
ppos (List[int]): id's of the primary proof obligations that require this
assumption for discharge
spos (List[int]): id's of the supporting proof obligations that require
this assumption for discharge
"""
def __init__(
self,
capi: "CFunctionApi",
id: int,
predicate: "XPredicate",
ppos: List[int],
spos: List[int]) -> None:
self._id = id
self._capi = capi
self._predicate = predicate
self._ppos = ppos
self._spos = spos
@property
def id(self) -> int:
return self._id
@property
def capi(self) -> "CFunctionApi":
return self._capi
@property
def cfun(self) -> "CFunction":
return self.capi.cfun
@property
def predicate(self) -> "XPredicate":
return self._predicate
@property
def ppos(self) -> List[int]:
return self._ppos
@property
def spos(self) -> List[int]:
return self._spos
[docs] def has_open_pos(self) -> bool:
return (len(self.get_open_ppos()) + len(self.get_open_spos())) > 0
[docs] def get_open_ppos(self) -> List[int]:
return [i for i in self.ppos if self.cfun.get_ppo(i).is_open]
[docs] def get_open_spos(self) -> List[int]:
return [i for i in self.spos if self.cfun.get_spo(i).is_open]
def __str__(self) -> str:
strppos = ""
strspos = ""
if len(self.ppos) > 0:
strppos = (
"\n --Dependent ppo's: ["
+ ",".join(str(i) for i in self.get_open_ppos())
+ "]"
)
if len(self.spos) > 0:
strspos = (
"\n --Dependent spo's: ["
+ ",".join(str(i) for i in self.get_open_spos())
+ "]"
)
return str(self.id) + " " + str(self.predicate) + strppos + strspos