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