openethereum/util/bloomchain/src/group/position/manager.rs

45 lines
1.2 KiB
Rust

// Copyright 2015-2018 Parity Technologies (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/>.
use super::{Position, GroupPosition};
use position::Position as BloomPosition;
pub struct Manager {
index_size: usize
}
impl Manager {
pub fn new(index_size: usize) -> Self {
Manager {
index_size: index_size
}
}
pub fn group_position(&self, pos: &BloomPosition) -> GroupPosition {
GroupPosition {
level: pos.level,
index: pos.index / self.index_size,
}
}
pub fn position(&self, pos: &BloomPosition) -> Position {
Position {
group: self.group_position(pos),
number: pos.index % self.index_size,
}
}
}