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Make sure the unit struct actually compiles

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This commit is contained in:
Bradlee Speice 2019-04-23 13:25:38 -04:00
parent 10b7219633
commit 5343ac0396
1 changed files with 6 additions and 2 deletions
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8
src/lib.rs
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@ -1,4 +1,5 @@
use std::io; use std::io;
use std::marker::PhantomData;
#[derive(Debug)] #[derive(Debug)]
pub enum KError<'a> { pub enum KError<'a> {
@ -28,14 +29,17 @@ pub trait KStruct<'a> {
fn read<S: KStream>(&mut self, stream: &mut S) -> KResult<'a, ()>; fn read<S: KStream>(&mut self, stream: &mut S) -> KResult<'a, ()>;
} }
pub struct KStructUnit<'a>; #[derive(Debug, Default, Copy, Clone)]
pub struct KStructUnit<'a> {
phantom: PhantomData<&'a ()>
}
impl<'a> KStruct<'a> for KStructUnit<'a> { impl<'a> KStruct<'a> for KStructUnit<'a> {
type Parent = KStructUnit<'a>; type Parent = KStructUnit<'a>;
type Root = KStructUnit<'a>; type Root = KStructUnit<'a>;
fn new(_parent: Option<&'a Self::Parent>, _root: Option<&'a Self::Root>) -> Result<Self, KError<'a>> where fn new(_parent: Option<&'a Self::Parent>, _root: Option<&'a Self::Root>) -> Result<Self, KError<'a>> where
Self: Sized { Self: Sized {
Ok(KStructUnit) Ok(KStructUnit { phantom: PhantomData })
} }
fn read<S: KStream>(&mut self, stream: &mut S) -> Result<(), KError<'a>> { fn read<S: KStream>(&mut self, stream: &mut S) -> Result<(), KError<'a>> {