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use std::io::{BufReader, BufWriter};
use anyhow::Result;
use crate::RwBuilder;
/// Type returned by the `buffered` function on the `RwBuilder` trait.
/// It is itself an `RwBuilder` so can be chained further.
#[derive(Debug)]
pub struct Builder<B>
where
B: RwBuilder,
{
/// The inner builder it wraps
builder: B,
}
impl<B> Builder<B>
/// Factory function to wrap an inner builder
#[must_use]
pub const fn new(builder: B) -> Self {
Self { builder }
impl<B> RwBuilder for Builder<B>
B::Reader: std::io::Read,
B::Writer: std::io::Write,
type Reader = BufReader<B::Reader>;
type Writer = BufWriter<B::Writer>;
fn reader(&self) -> Result<Self::Reader> {
Ok(BufReader::new(self.builder.reader()?))
fn writer(&self) -> Result<Self::Writer> {
Ok(BufWriter::new(self.builder.writer()?))