101 lines
4.5 KiB
Rust
101 lines
4.5 KiB
Rust
|
// 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 moving array structures, e.g. `[T, ..3]` as well as moving
|
||
|
|
// elements in and out of such arrays.
|
||
|
|
//
|
||
|
|
// Note also that the `test_move_array_then_overwrite` tests represent
|
||
|
|
// cases that we probably should make illegal.
|
||
|
|
|
||
|
|
pub struct D { d: int }
|
||
|
|
impl Drop for D { fn drop(&mut self) { } }
|
||
|
|
|
||
|
|
#[rustc_move_fragments]
|
||
|
|
pub fn test_move_array_via_return(a: [D, ..3]) -> [D, ..3] {
|
||
|
|
//~^ ERROR assigned_leaf_path: `$(local a)`
|
||
|
|
//~| ERROR moved_leaf_path: `$(local a)`
|
||
|
|
return a;
|
||
|
|
}
|
||
|
|
|
||
|
|
#[rustc_move_fragments]
|
||
|
|
pub fn test_move_array_into_recv(a: [D, ..3], recv: &mut [D, ..3]) {
|
||
|
|
//~^ ERROR parent_of_fragments: `$(local recv)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local a)`
|
||
|
|
//~| ERROR moved_leaf_path: `$(local a)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local recv).*`
|
||
|
|
*recv = a;
|
||
|
|
}
|
||
|
|
|
||
|
|
#[rustc_move_fragments]
|
||
|
|
pub fn test_extract_array_elem(a: [D, ..3], i: uint) -> D {
|
||
|
|
//~^ ERROR parent_of_fragments: `$(local a)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local i)`
|
||
|
|
//~| ERROR moved_leaf_path: `$(local a).[]`
|
||
|
|
//~| ERROR unmoved_fragment: `$(allbutone $(local a).[])`
|
||
|
|
a[i]
|
||
|
|
}
|
||
|
|
|
||
|
|
#[rustc_move_fragments]
|
||
|
|
pub fn test_overwrite_array_elem(mut a: [D, ..3], i: uint, d: D) {
|
||
|
|
//~^ ERROR parent_of_fragments: `$(local mut a)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local i)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local d)`
|
||
|
|
//~| ERROR moved_leaf_path: `$(local d)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local mut a).[]`
|
||
|
|
//~| ERROR unmoved_fragment: `$(allbutone $(local mut a).[])`
|
||
|
|
a[i] = d;
|
||
|
|
}
|
||
|
|
|
||
|
|
// FIXME (pnkfelix): Both test_move_array_then_overwrite_elem1 and
|
||
|
|
// test_move_array_then_overwrite_elem2 illustrate a behavior that
|
||
|
|
// we need to make illegal if we want to get rid of drop-flags.
|
||
|
|
// See RFC PR 320 for more discussion.
|
||
|
|
|
||
|
|
#[rustc_move_fragments]
|
||
|
|
pub fn test_move_array_then_overwrite_elem1(mut a: [D, ..3], i: uint, recv: &mut [D, ..3], d: D) {
|
||
|
|
//~^ ERROR parent_of_fragments: `$(local mut a)`
|
||
|
|
//~| ERROR parent_of_fragments: `$(local recv)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local recv).*`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local i)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local d)`
|
||
|
|
//~| ERROR moved_leaf_path: `$(local d)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local mut a).[]`
|
||
|
|
//~| ERROR unmoved_fragment: `$(allbutone $(local mut a).[])`
|
||
|
|
|
||
|
|
// This test covers the case where the array contents have been all moved away, but
|
||
|
|
// we still need to deal with new initializing writes into the array.
|
||
|
|
*recv = a;
|
||
|
|
a[i] = d;
|
||
|
|
}
|
||
|
|
|
||
|
|
#[rustc_move_fragments]
|
||
|
|
pub fn test_move_array_then_overwrite_elem2(mut a: [D, ..3], i: uint, j: uint,
|
||
|
|
recv: &mut [D, ..3], d1: D, d2: D) {
|
||
|
|
//~^^ ERROR parent_of_fragments: `$(local mut a)`
|
||
|
|
//~| ERROR parent_of_fragments: `$(local recv)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local recv).*`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local i)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local j)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local d1)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local d2)`
|
||
|
|
//~| ERROR moved_leaf_path: `$(local d1)`
|
||
|
|
//~| ERROR moved_leaf_path: `$(local d2)`
|
||
|
|
//~| ERROR assigned_leaf_path: `$(local mut a).[]`
|
||
|
|
//~| ERROR unmoved_fragment: `$(allbutone $(local mut a).[])`
|
||
|
|
|
||
|
|
// This test covers the case where the array contents have been all moved away, but
|
||
|
|
// we still need to deal with new initializing writes into the array.
|
||
|
|
*recv = a;
|
||
|
|
a[i] = d1;
|
||
|
|
a[j] = d2;
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn main() { }
|