use std::io;
use thiserror::Error;
mod indexfile;
pub use indexfile::{IndexFile, IndexFileMut};
#[derive(Error, Debug)]
pub enum IndexError {
#[error("I/O error: {0}")]
Io(#[from] io::Error),
#[error("Index file out of range")]
OutOfRange,
#[error("Asked key is smaller than the first entry in the index")]
KeyNotFound,
#[error("Key should be monotonically increasing: input: {1}, last: {0}")]
InvalidInput(u64, u64),
#[error("index file is not readable")]
InvalidFormat,
}