1 // Copyright 2014 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.
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.
13 use std::borrow::{Cow, IntoCow};
14 use std::default::Default;
15 use std::iter::FromIterator;
17 use std::option::IntoIter as OptionIter;
19 pub struct XorShiftRng;
20 use XorShiftRng as DummyRng;
21 impl Rng for XorShiftRng {}
23 pub trait Rand: Default + Sized {
24 fn rand<R: Rng>(_rng: &mut R) -> Self { Default::default() }
28 #[derive(PartialEq, Eq)]
31 fn id<T>(x: T) -> T { x }
32 fn eq<T: Eq>(a: T, b: T) -> bool { a == b }
33 fn u8_as_i8(x: u8) -> i8 { x as i8 }
34 fn odd(x: usize) -> bool { x % 2 == 1 }
35 fn dummy_rng() -> DummyRng { XorShiftRng }
38 fn size() -> usize { std::mem::size_of::<Self>() }
42 #[derive(PartialEq, Eq)]
46 fn from_fn<F>(_: usize, _: F) -> BitVec where F: FnMut(usize) -> bool {
51 #[derive(PartialEq, Eq)]
55 fn map_in_place<U, F>(self, mut f: F) -> Foo<U> where F: FnMut(T) -> U {
62 ($($expr:expr, $ty:ty, ($($test:expr),*);)+) => (pub fn main() {$({
64 static S: $ty = $expr;
65 assert!(eq(C($($test),*), $expr($($test),*)));
66 assert!(eq(S($($test),*), $expr($($test),*)));
67 assert!(eq(C($($test),*), S($($test),*)));
73 id, fn(i32) -> i32, (5);
74 id::<i32>, fn(i32) -> i32, (5);
76 // Enum variant constructor.
77 Some, fn(i32) -> Option<i32>, (5);
78 Some::<i32>, fn(i32) -> Option<i32>, (5);
80 // Tuple struct constructor.
81 Newt, fn(i32) -> Newt<i32>, (5);
82 Newt::<i32>, fn(i32) -> Newt<i32>, (5);
84 // Inherent static methods.
85 Vec::new, fn() -> Vec<()>, ();
86 Vec::<()>::new, fn() -> Vec<()>, ();
87 <Vec<()>>::new, fn() -> Vec<()>, ();
88 Vec::with_capacity, fn(usize) -> Vec<()>, (5);
89 Vec::<()>::with_capacity, fn(usize) -> Vec<()>, (5);
90 <Vec<()>>::with_capacity, fn(usize) -> Vec<()>, (5);
91 BitVec::from_fn, fn(usize, fn(usize) -> bool) -> BitVec, (5, odd);
92 BitVec::from_fn::<fn(usize) -> bool>, fn(usize, fn(usize) -> bool) -> BitVec, (5, odd);
94 // Inherent non-static method.
95 Foo::map_in_place, fn(Foo<u8>, fn(u8) -> i8) -> Foo<i8>, (Foo(b'f'), u8_as_i8);
96 Foo::map_in_place::<i8, fn(u8) -> i8>, fn(Foo<u8>, fn(u8) -> i8) -> Foo<i8>,
97 (Foo(b'f'), u8_as_i8);
98 Foo::<u8>::map_in_place, fn(Foo<u8>, fn(u8) -> i8) -> Foo<i8>
99 , (Foo(b'f'), u8_as_i8);
100 Foo::<u8>::map_in_place::<i8, fn(u8) -> i8>, fn(Foo<u8>, fn(u8) -> i8) -> Foo<i8>
101 , (Foo(b'f'), u8_as_i8);
103 // Trait static methods.
104 bool::size, fn() -> usize, ();
105 <bool>::size, fn() -> usize, ();
106 <bool as Size>::size, fn() -> usize, ();
108 Default::default, fn() -> i32, ();
109 i32::default, fn() -> i32, ();
110 <i32>::default, fn() -> i32, ();
111 <i32 as Default>::default, fn() -> i32, ();
113 Rand::rand, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
114 i32::rand, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
115 <i32>::rand, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
116 <i32 as Rand>::rand, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
117 Rand::rand::<DummyRng>, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
118 i32::rand::<DummyRng>, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
119 <i32>::rand::<DummyRng>, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
120 <i32 as Rand>::rand::<DummyRng>, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
122 // Trait non-static methods.
123 Clone::clone, fn(&i32) -> i32, (&5);
124 i32::clone, fn(&i32) -> i32, (&5);
125 <i32>::clone, fn(&i32) -> i32, (&5);
126 <i32 as Clone>::clone, fn(&i32) -> i32, (&5);
128 FromIterator::from_iter, fn(OptionIter<i32>) -> Vec<i32>, (Some(5).into_iter());
129 Vec::from_iter, fn(OptionIter<i32>) -> Vec<i32>, (Some(5).into_iter());
130 <Vec<_>>::from_iter, fn(OptionIter<i32>) -> Vec<i32>, (Some(5).into_iter());
131 <Vec<_> as FromIterator<_>>::from_iter, fn(OptionIter<i32>) -> Vec<i32>,
132 (Some(5).into_iter());
133 <Vec<i32> as FromIterator<_>>::from_iter, fn(OptionIter<i32>) -> Vec<i32>,
134 (Some(5).into_iter());
135 FromIterator::from_iter::<OptionIter<i32>>, fn(OptionIter<i32>) -> Vec<i32>,
136 (Some(5).into_iter());
137 <Vec<i32> as FromIterator<_>>::from_iter::<OptionIter<i32>>, fn(OptionIter<i32>) -> Vec<i32>,
138 (Some(5).into_iter());
140 Add::add, fn(i32, i32) -> i32, (5, 6);
141 i32::add, fn(i32, i32) -> i32, (5, 6);
142 <i32>::add, fn(i32, i32) -> i32, (5, 6);
143 <i32 as Add<_>>::add, fn(i32, i32) -> i32, (5, 6);
144 <i32 as Add<i32>>::add, fn(i32, i32) -> i32, (5, 6);
146 String::into_cow, fn(String) -> Cow<'static, str>,
148 <String>::into_cow, fn(String) -> Cow<'static, str>,
150 <String as IntoCow<_>>::into_cow, fn(String) -> Cow<'static, str>,
152 <String as IntoCow<'static, _>>::into_cow, fn(String) -> Cow<'static, str>,