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//@ run-pass
#![allow(unused_variables)]
// Test slicing sugar.
// FIXME(static_mut_refs): this could use an atomic
#![allow(static_mut_refs)]
extern crate core;
use core::ops::{Index, IndexMut, Range, RangeTo, RangeFrom, RangeFull};
static mut COUNT: usize = 0;
struct Foo;
impl Index<Range<Foo>> for Foo {
type Output = Foo;
fn index(&self, index: Range<Foo>) -> &Foo {
unsafe { COUNT += 1; }
self
}
}
impl Index<RangeTo<Foo>> for Foo {
type Output = Foo;
fn index(&self, index: RangeTo<Foo>) -> &Foo {
unsafe { COUNT += 1; }
self
}
}
impl Index<RangeFrom<Foo>> for Foo {
type Output = Foo;
fn index(&self, index: RangeFrom<Foo>) -> &Foo {
unsafe { COUNT += 1; }
self
}
}
impl Index<RangeFull> for Foo {
type Output = Foo;
fn index(&self, _index: RangeFull) -> &Foo {
unsafe { COUNT += 1; }
self
}
}
impl IndexMut<Range<Foo>> for Foo {
fn index_mut(&mut self, index: Range<Foo>) -> &mut Foo {
unsafe { COUNT += 1; }
self
}
}
impl IndexMut<RangeTo<Foo>> for Foo {
fn index_mut(&mut self, index: RangeTo<Foo>) -> &mut Foo {
unsafe { COUNT += 1; }
self
}
}
impl IndexMut<RangeFrom<Foo>> for Foo {
fn index_mut(&mut self, index: RangeFrom<Foo>) -> &mut Foo {
unsafe { COUNT += 1; }
self
}
}
impl IndexMut<RangeFull> for Foo {
fn index_mut(&mut self, _index: RangeFull) -> &mut Foo {
unsafe { COUNT += 1; }
self
}
}
fn main() {
let mut x = Foo;
let _ = &x[..];
let _ = &x[Foo..];
let _ = &x[..Foo];
let _ = &x[Foo..Foo];
let _ = &mut x[..];
let _ = &mut x[Foo..];
let _ = &mut x[..Foo];
let _ = &mut x[Foo..Foo];
unsafe {
assert_eq!(COUNT, 8);
}
}
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