// Copyright 2015, 2016 Ethcore (UK) Ltd.
// This file is part of Parity.

// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with Parity.  If not, see <http://www.gnu.org/licenses/>.

//! Multilevel blockchain bloom filter.

mod bloomindex;
mod chainfilter;
mod indexer;

#[cfg(test)]
mod tests;

pub use self::bloomindex::BloomIndex;
pub use self::chainfilter::ChainFilter;
use util::hash::H2048;

/// Types implementing this trait provide read access for bloom filters database.
pub trait FilterDataSource {
	/// returns reference to log at given position if it exists
	fn bloom_at_index(&self, index: &BloomIndex) -> Option<H2048>;
}