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 as u8, (n >> 8) as u8])
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_le(n as u16)?;
35        self.write_le((n >> 16) as u16)
36    }
37}
38
39impl<W: io::Write + ?Sized> WriteBytesExt<u64> for W {
40    #[inline]
41    fn write_le(&mut self, n: u64) -> io::Result<()> {
42        self.write_le(n as u32)?;
43        self.write_le((n >> 32) as u32)
44    }
45}
gif/traits.rs

gif/
traits.rs
