xitca-http 0.9.1

//! Copied from <https://github.com/hyperium/h2>
//! Copyright (c) 2017 h2 authors, licensed under MIT license.
//! See https://github.com/hyperium/h2/blob/master/LICENSE for details.

#![allow(dead_code)]

pub mod data;
pub mod go_away;
pub mod head;
pub mod headers;
pub mod ping;
pub mod priority;
pub mod reason;
pub mod reset;
pub mod settings;
pub mod stream_id;
pub mod window_update;

pub const PREFACE: &[u8; 24] = b"PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n";

/// A helper macro that unpacks a sequence of 4 bytes found in the buffer with
/// the given identifier, starting at the given offset, into the given integer
/// type. Obviously, the integer type should be able to support at least 4
/// bytes.
///
/// # Examples
///
/// ```ignore
/// # // We ignore this doctest because the macro is not exported.
/// let buf: [u8; 4] = [0, 0, 0, 1];
/// assert_eq!(1u32, unpack_octets_4!(buf, 0, u32));
/// ```
macro_rules! unpack_octets_4 {
    // TODO: Get rid of this macro
    ($buf:expr, $offset:expr, $tip:ty) => {
        (($buf[$offset + 0] as $tip) << 24)
            | (($buf[$offset + 1] as $tip) << 16)
            | (($buf[$offset + 2] as $tip) << 8)
            | (($buf[$offset + 3] as $tip) << 0)
    };
}

use unpack_octets_4;

#[cfg(test)]
mod tests {
    #[test]
    fn test_unpack_octets_4() {
        let buf: [u8; 4] = [0, 0, 0, 1];
        assert_eq!(1u32, unpack_octets_4!(buf, 0, u32));
    }
}