rust/mini_core.rs
2018-07-26 10:48:50 +02:00

98 lines
2.2 KiB
Rust

#![feature(no_core, lang_items, intrinsics, unboxed_closures)]
#![no_core]
#![allow(dead_code)]
#[lang="sized"]
pub trait Sized {}
#[lang="copy"]
pub unsafe trait Copy {}
unsafe impl Copy for u8 {}
unsafe impl Copy for u16 {}
unsafe impl Copy for u32 {}
unsafe impl Copy for u64 {}
unsafe impl Copy for usize {}
unsafe impl Copy for i8 {}
unsafe impl Copy for i16 {}
unsafe impl Copy for i32 {}
unsafe impl Copy for isize {}
unsafe impl Copy for char {}
unsafe impl<'a, T: ?Sized> Copy for &'a T {}
unsafe impl<T: ?Sized> Copy for *const T {}
#[lang="freeze"]
trait Freeze {}
#[lang="mul"]
pub trait Mul<RHS = Self> {
type Output;
#[must_use]
fn mul(self, rhs: RHS) -> Self::Output;
}
impl Mul for u8 {
type Output = Self;
fn mul(self, rhs: Self) -> Self {
self * rhs
}
}
#[lang = "eq"]
pub trait PartialEq<Rhs: ?Sized = Self> {
fn eq(&self, other: &Rhs) -> bool;
fn ne(&self, other: &Rhs) -> bool;
}
impl PartialEq for u8 {
fn eq(&self, other: &u8) -> bool { (*self) == (*other) }
fn ne(&self, other: &u8) -> bool { (*self) != (*other) }
}
impl PartialEq for char {
fn eq(&self, other: &char) -> bool { (*self) == (*other) }
fn ne(&self, other: &char) -> bool { (*self) != (*other) }
}
impl<T: ?Sized> PartialEq for *const T {
fn eq(&self, other: &*const T) -> bool { *self == *other }
fn ne(&self, other: &*const T) -> bool { *self != *other }
}
#[lang = "fn_once"]
#[rustc_paren_sugar]
trait FnOnce<Args> {
type Output;
extern "rust-call" fn call_once(self, args: Args) -> Self::Output;
}
#[lang = "fn_mut"]
#[rustc_paren_sugar]
trait FnMut<Args> : FnOnce<Args> {
extern "rust-call" fn call_mut(&mut self, args: Args) -> Self::Output;
}
#[lang="panic"]
pub fn panic(_expr_file_line_col: &(&'static str, &'static str, u32, u32)) -> ! {
loop {}
}
#[lang = "drop_in_place"]
#[allow(unconditional_recursion)]
pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
// Code here does not matter - this is replaced by the
// real drop glue by the compiler.
drop_in_place(to_drop);
}
pub mod intrinsics {
extern "rust-intrinsic" {
pub fn size_of<T>() -> usize;
pub fn copy<T>(src: *const T, dst: *mut T, count: usize);
pub fn transmute<T, U>(e: T) -> U;
}
}