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extern crate alloc;
use alloc::boxed::Box;
use ross_protocol::packet::Packet;
use crate::extractor::{Extractor, ExtractorError};
use crate::filter::{Filter, FilterError};
use crate::state::StateManager;
#[derive(Debug)]
pub enum MatcherError {
ExtractorError(ExtractorError),
FilterError(FilterError),
}
#[derive(Debug)]
pub struct Matcher {
pub extractor: Box<dyn Extractor>,
pub filter: Box<dyn Filter>,
}
impl Matcher {
pub fn do_match(&mut self, packet: &Packet, state_manager: &mut StateManager) -> Result<bool, MatcherError> {
let value = self.extractor.extract(packet).map_err(|err| MatcherError::ExtractorError(err))?;
let result = self.filter.filter(&value, state_manager).map_err(|err| MatcherError::FilterError(err))?;
Ok(result)
}
}