lindera_core/
connection.rs

1use std::borrow::Cow;
2
3use byteorder::{ByteOrder, LittleEndian};
4use serde::{Deserialize, Serialize};
5
6#[derive(Clone, Serialize, Deserialize)]
7pub struct ConnectionCostMatrix {
8    pub costs_data: Cow<'static, [u8]>,
9    pub backward_size: u32,
10}
11
12impl ConnectionCostMatrix {
13    pub fn load_static(conn_data: &'static [u8]) -> ConnectionCostMatrix {
14        let backward_size = LittleEndian::read_i16(&conn_data[2..4]);
15        ConnectionCostMatrix {
16            costs_data: Cow::Borrowed(&conn_data[4..]),
17            backward_size: backward_size as u32,
18        }
19    }
20
21    pub fn load(conn_data: &[u8]) -> ConnectionCostMatrix {
22        let backward_size = LittleEndian::read_i16(&conn_data[2..4]);
23        ConnectionCostMatrix {
24            costs_data: Cow::Owned(conn_data[4..].to_vec()),
25            backward_size: backward_size as u32,
26        }
27    }
28
29    pub fn cost(&self, forward_id: u32, backward_id: u32) -> i32 {
30        let cost_id = (backward_id + forward_id * self.backward_size) as usize;
31        LittleEndian::read_i16(&self.costs_data[cost_id * 2..]) as i32
32    }
33}
lindera_core/connection.rs

lindera_core/
connection.rs
