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gif/
traits.rs

1//! Traits used in this library
2use std::io;
3
4/// Writer extension to write little endian data
5pub trait WriteBytesExt<T> {
6    /// Writes `T` to a bytes stream. Least significant byte first.
7    fn write_le(&mut self, n: T) -> io::Result<()>;
8
9    /*
10    #[inline]
11    fn write_byte(&mut self, n: u8) -> io::Result<()> where Self: Write {
12        self.write_all(&[n])
13    }
14    */
15}
16
17impl<W: io::Write + ?Sized> WriteBytesExt<u8> for W {
18    #[inline(always)]
19    fn write_le(&mut self, n: u8) -> io::Result<()> {
20        self.write_all(&[n])
21    }
22}
23
24impl<W: io::Write + ?Sized> WriteBytesExt<u16> for W {
25    #[inline]
26    fn write_le(&mut self, n: u16) -> io::Result<()> {
27        self.write_all(&n.to_le_bytes())
28    }
29}
30
31impl<W: io::Write + ?Sized> WriteBytesExt<u32> for W {
32    #[inline]
33    fn write_le(&mut self, n: u32) -> io::Result<()> {
34        self.write_all(&n.to_le_bytes())
35    }
36}
37
38impl<W: io::Write + ?Sized> WriteBytesExt<u64> for W {
39    #[inline]
40    fn write_le(&mut self, n: u64) -> io::Result<()> {
41        self.write_all(&n.to_le_bytes())
42    }
43}