ruma_common/serde/
buf.rs

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use bytes::BufMut;
use serde::Serialize;

/// Converts a byte slice to a buffer by copying.
pub fn slice_to_buf<B: Default + BufMut>(s: &[u8]) -> B {
    let mut buf = B::default();
    buf.put_slice(s);
    buf
}

/// Creates a buffer and writes a serializable value to it.
pub fn json_to_buf<B: Default + BufMut, T: Serialize>(val: &T) -> serde_json::Result<B> {
    let mut buf = B::default().writer();
    serde_json::to_writer(&mut buf, val)?;
    Ok(buf.into_inner())
}