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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// Test slicing sugar.
#![feature(core)]
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;
&x[..];
&x[Foo..];
&x[..Foo];
&x[Foo..Foo];
&mut x[..];
&mut x[Foo..];
&mut x[..Foo];
&mut x[Foo..Foo];
unsafe {
assert_eq!(COUNT, 8);
}
}
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