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bitwrite for options

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This commit is contained in:
Robin Appelman 2021-07-24 14:53:59 +02:00
commit c321c5a252
2 changed files with 23 additions and 1 deletions
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2
Cargo.toml
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@ -1,6 +1,6 @@
[package]
name = "bitbuffer"
version = "0.9.7"
version = "0.9.8"
authors = ["Robin Appelman <robin@icewind.nl>"]
edition = "2018"
description = "Reading bit sequences from a byte slice"

22
src/write.rs
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@ -189,6 +189,17 @@ impl<T: BitWrite<E>, E: Endianness> BitWrite<E> for Vec<T> {
}
}
impl<T: BitWrite<E>, E: Endianness> BitWrite<E> for Option<T> {
#[inline]
fn write(&self, stream: &mut BitWriteStream<E>) -> Result<()> {
self.is_some().write(stream)?;
if let Some(val) = self {
val.write(stream)?;
}
Ok(())
}
}
macro_rules! impl_write_tuple {
($($i:tt: $type:ident),*) => {
impl<'a, E: Endianness, $($type: BitWrite<E>),*> BitWrite<E> for ($($type),*) {
@ -348,3 +359,14 @@ impl<T: BitWriteSized<E>, E: Endianness> BitWriteSized<E> for Arc<T> {
stream.write_sized(self.as_ref(), len)
}
}
impl<T: BitWriteSized<E>, E: Endianness> BitWriteSized<E> for Option<T> {
#[inline]
fn write_sized(&self, stream: &mut BitWriteStream<E>, len: usize) -> Result<()> {
self.is_some().write(stream)?;
if let Some(val) = self {
val.write_sized(stream, len)?;
}
Ok(())
}
}