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235 lines
7.1 KiB
Rust
235 lines
7.1 KiB
Rust
/*
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* Copyright (c) 2020-2023, Stalwart Labs Ltd.
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*
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* This file is part of the Stalwart Sieve Interpreter.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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* in the LICENSE file at the top-level directory of this distribution.
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* You can be released from the requirements of the AGPLv3 license by
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* purchasing a commercial license. Please contact licensing@stalw.art
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* for more details.
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*/
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use crate::sieve::{
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compiler::{
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grammar::{
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tests::test_spamtest::{TestSpamTest, TestVirusTest},
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MatchType,
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},
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Number,
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},
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runtime::Variable,
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Context, SpamStatus, VirusStatus,
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};
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use super::TestResult;
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impl TestSpamTest {
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pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
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let status = if self.percent {
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ctx.spam_status.as_percentage()
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} else {
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ctx.spam_status.as_number()
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};
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let value = ctx.eval_value(&self.value);
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let mut captured_values = Vec::new();
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let result = match &self.match_type {
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MatchType::Is => self.comparator.is(&status, &value),
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MatchType::Contains => self
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.comparator
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.contains(status.into_cow().as_ref(), value.into_cow().as_ref()),
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MatchType::Value(rel_match) => self.comparator.relational(rel_match, &status, &value),
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MatchType::Matches(capture_positions) => self.comparator.matches(
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status.into_cow().as_ref(),
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value.into_cow().as_ref(),
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*capture_positions,
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&mut captured_values,
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),
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MatchType::Regex(capture_positions) => self.comparator.regex(
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&self.value,
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&value,
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status.into_cow().as_ref(),
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*capture_positions,
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&mut captured_values,
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),
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MatchType::Count(rel_match) => rel_match.cmp(
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&Number::from(if matches!(&ctx.spam_status, SpamStatus::Unknown) {
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0.0
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} else {
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1.1
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}),
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&value.to_number(),
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),
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MatchType::List => false,
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};
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if !captured_values.is_empty() {
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ctx.set_match_variables(captured_values);
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}
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TestResult::Bool(result ^ self.is_not)
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}
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}
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impl TestVirusTest {
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pub(crate) fn exec(&self, ctx: &mut Context) -> TestResult {
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let status = ctx.virus_status.as_number();
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let value = ctx.eval_value(&self.value);
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let mut captured_values = Vec::new();
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let result = match &self.match_type {
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MatchType::Is => self.comparator.is(&status, &value),
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MatchType::Contains => self
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.comparator
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.contains(status.into_cow().as_ref(), value.into_cow().as_ref()),
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MatchType::Value(rel_match) => self.comparator.relational(rel_match, &status, &value),
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MatchType::Matches(capture_positions) => self.comparator.matches(
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status.into_cow().as_ref(),
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value.into_cow().as_ref(),
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*capture_positions,
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&mut captured_values,
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),
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MatchType::Regex(capture_positions) => self.comparator.regex(
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&self.value,
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&value,
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status.into_cow().as_ref(),
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*capture_positions,
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&mut captured_values,
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),
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MatchType::Count(rel_match) => rel_match.cmp(
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&Number::from(if matches!(&ctx.virus_status, VirusStatus::Unknown) {
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0.0
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} else {
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1.1
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}),
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&value.to_number(),
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),
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MatchType::List => false,
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};
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if !captured_values.is_empty() {
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ctx.set_match_variables(captured_values);
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}
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TestResult::Bool(result ^ self.is_not)
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}
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}
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impl SpamStatus {
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pub fn from_number(number: u32) -> Self {
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match number {
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1 => SpamStatus::Ham,
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2..=9 => SpamStatus::MaybeSpam(number as f64 / 10.0),
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10 => SpamStatus::Spam,
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_ => SpamStatus::Unknown,
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}
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}
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pub(crate) fn as_number(&self) -> Variable<'static> {
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Variable::Integer(match self {
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SpamStatus::Unknown => 0,
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SpamStatus::Ham => 1,
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SpamStatus::MaybeSpam(pct) => {
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let n = (pct * 10.0) as i64;
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if n < 2 {
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2
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} else if n > 9 {
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9
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} else {
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n
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}
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}
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SpamStatus::Spam => 10,
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})
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}
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pub(crate) fn as_percentage(&self) -> Variable<'static> {
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Variable::Integer(match self {
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SpamStatus::Unknown | SpamStatus::Ham => 0,
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SpamStatus::MaybeSpam(pct) => {
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let n = (pct * 100.0).ceil() as i64;
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if n > 100 {
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100
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} else if n < 1 {
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1
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} else {
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n
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}
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}
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SpamStatus::Spam => 100,
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})
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}
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}
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impl VirusStatus {
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pub fn from_number(number: u32) -> Self {
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match number {
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1 => VirusStatus::Clean,
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2 => VirusStatus::Replaced,
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3 => VirusStatus::Cured,
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4 => VirusStatus::MaybeVirus,
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5 => VirusStatus::Virus,
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_ => VirusStatus::Unknown,
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}
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}
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pub(crate) fn as_number(&self) -> Variable<'static> {
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Variable::Integer(match self {
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VirusStatus::Unknown => 0,
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VirusStatus::Clean => 1,
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VirusStatus::Replaced => 2,
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VirusStatus::Cured => 3,
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VirusStatus::MaybeVirus => 4,
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VirusStatus::Virus => 5,
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})
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}
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}
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impl From<u32> for SpamStatus {
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fn from(number: u32) -> Self {
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SpamStatus::from_number(number)
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}
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}
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impl From<i32> for SpamStatus {
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fn from(number: i32) -> Self {
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SpamStatus::from_number(number as u32)
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}
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}
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impl From<usize> for SpamStatus {
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fn from(number: usize) -> Self {
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SpamStatus::from_number(number as u32)
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}
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}
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impl From<u32> for VirusStatus {
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fn from(number: u32) -> Self {
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VirusStatus::from_number(number)
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}
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}
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impl From<i32> for VirusStatus {
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fn from(number: i32) -> Self {
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VirusStatus::from_number(number as u32)
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}
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}
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impl From<usize> for VirusStatus {
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fn from(number: usize) -> Self {
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VirusStatus::from_number(number as u32)
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}
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}
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