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|
#[lang = "sized"]
pub trait Sized {}
#[lang = "clone"]
pub trait Clone: Sized {
fn clone(&self) -> Self;
fn clone_from(&mut self, source: &Self) {
*self = source.clone()
}
}
mod impls {
use super::Clone;
macro_rules! impl_clone {
($($t:ty)*) => {
$(
impl Clone for $t {
fn clone(&self) -> Self {
*self
}
}
)*
}
}
impl_clone! {
usize u8 u16 u32 u64 // u128
isize i8 i16 i32 i64 // i128
f32 f64
bool char
}
}
#[lang = "copy"]
pub trait Copy: Clone {
// Empty.
}
mod copy_impls {
use super::Copy;
macro_rules! impl_copy {
($($t:ty)*) => {
$(
impl Copy for $t {}
)*
}
}
impl_copy! {
usize u8 u16 u32 u64 // u128
isize i8 i16 i32 i64 // i128
f32 f64
bool char
}
}
trait Foo
where
Self: Sized,
{
fn get(self) -> i32;
fn test(self) -> i32 {
self.get()
}
}
struct Bar(i32);
impl Foo for Bar {
fn get(self) -> i32 {
self.0
}
}
fn main() {
let a;
a = Bar(123);
let b;
b = Bar::get(a);
let a;
a = Bar(123);
let b;
b = a.test();
}
|
