src/test/run-pass/sync-send-iterators-in-libcollections.rs

   1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![allow(warnings)]
  12 #![feature(collections)]
  13 #![feature(drain, enumset, collections_bound, btree_range, vecmap)]
  14
  15 extern crate collections;
  16
  17 use collections::BinaryHeap;
  18 use collections::{BTreeMap, BTreeSet};
  19 use collections::EnumSet;
  20 use collections::LinkedList;
  21 use collections::String;
  22 use collections::Vec;
  23 use collections::VecDeque;
  24 use std::collections::HashMap;
  25 use std::collections::HashSet;
  26
  27 use collections::Bound::Included;
  28 use collections::enum_set::CLike;
  29 use std::mem;
  30
  31 fn is_sync<T>(_: T) where T: Sync {}
  32 fn is_send<T>(_: T) where T: Send {}
  33
  34 macro_rules! all_sync_send {
  35     ($ctor:expr, $($iter:ident),+) => ({
  36         $(
  37             let mut x = $ctor;
  38             is_sync(x.$iter());
  39             let mut y = $ctor;
  40             is_send(y.$iter());
  41         )+
  42     })
  43 }
  44
  45 macro_rules! is_sync_send {
  46     ($ctor:expr, $iter:ident($($param:expr),+)) => ({
  47         let mut x = $ctor;
  48         is_sync(x.$iter($( $param ),+));
  49         let mut y = $ctor;
  50         is_send(y.$iter($( $param ),+));
  51     })
  52 }
  53
  54 fn main() {
  55     // The iterator "generator" list should exhaust what corresponding
  56     // implementations have where `Sync` and `Send` semantics apply.
  57     all_sync_send!(BinaryHeap::<usize>::new(), iter, drain, into_iter);
  58
  59     all_sync_send!(BTreeMap::<usize, usize>::new(), iter, iter_mut, into_iter, keys, values);
  60     is_sync_send!(BTreeMap::<usize, usize>::new(), range(Included(&0), Included(&9)));
  61     is_sync_send!(BTreeMap::<usize, usize>::new(), range_mut(Included(&0), Included(&9)));
  62
  63     all_sync_send!(BTreeSet::<usize>::new(), iter, into_iter);
  64     is_sync_send!(BTreeSet::<usize>::new(), range(Included(&0), Included(&9)));
  65     is_sync_send!(BTreeSet::<usize>::new(), difference(&BTreeSet::<usize>::new()));
  66     is_sync_send!(BTreeSet::<usize>::new(), symmetric_difference(&BTreeSet::<usize>::new()));
  67     is_sync_send!(BTreeSet::<usize>::new(), intersection(&BTreeSet::<usize>::new()));
  68     is_sync_send!(BTreeSet::<usize>::new(), union(&BTreeSet::<usize>::new()));
  69
  70     all_sync_send!(HashMap::<usize, usize>::new(), iter, iter_mut, drain, into_iter, keys, values);
  71     all_sync_send!(HashSet::<usize>::new(), iter, drain, into_iter);
  72     is_sync_send!(HashSet::<usize>::new(), difference(&HashSet::<usize>::new()));
  73     is_sync_send!(HashSet::<usize>::new(), symmetric_difference(&HashSet::<usize>::new()));
  74     is_sync_send!(HashSet::<usize>::new(), intersection(&HashSet::<usize>::new()));
  75     is_sync_send!(HashSet::<usize>::new(), union(&HashSet::<usize>::new()));
  76
  77     all_sync_send!(LinkedList::<usize>::new(), iter, iter_mut, into_iter);
  78
  79     #[derive(Copy, Clone)]
  80     #[repr(usize)]
  81     #[allow(dead_code)]
  82     enum Foo { A, B, C }
  83     impl CLike for Foo {
  84         fn to_usize(&self) -> usize {
  85             *self as usize
  86         }
  87
  88         fn from_usize(v: usize) -> Foo {
  89             unsafe { mem::transmute(v) }
  90         }
  91     }
  92     all_sync_send!(EnumSet::<Foo>::new(), iter);
  93
  94     all_sync_send!(VecDeque::<usize>::new(), iter, iter_mut, into_iter);
  95     is_sync_send!(VecDeque::<usize>::new(), drain(..));
  96
  97     all_sync_send!(Vec::<usize>::new(), into_iter);
  98     is_sync_send!(Vec::<usize>::new(), drain(..));
  99     is_sync_send!(String::new(), drain(..));
 100 }