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pub mod ef;
pub mod simple;
use std::io::{Read, Write};
use anyhow::Result;
pub use crate::rank_array::ef::EliasFanoRankArray;
pub use crate::rank_array::simple::SimpleRankArray;
pub trait RankArray {
fn build(count_ranks: Vec<usize>) -> Box<Self>;
fn serialize_into<W: Write>(&self, writer: W) -> Result<usize>;
fn deserialize_from<R: Read>(reader: R) -> Result<Box<Self>>;
fn size_in_bytes(&self) -> usize;
fn memory_statistics(&self) -> serde_json::Value;
fn get(&self, i: usize) -> usize;
fn len(&self) -> usize;
fn is_empty(&self) -> bool;
}
#[cfg(test)]
mod tests {
use super::*;
fn test_basic<A: RankArray>() {
let count_ranks = vec![3, 0, 0, 0, 1, 2, 0, 1, 1];
let ra = A::build(count_ranks.clone());
for (i, &x) in count_ranks.iter().enumerate() {
assert_eq!(ra.get(i), x);
}
}
#[test]
fn test_basic_simple() {
test_basic::<SimpleRankArray>();
}
}