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//@ run-pass
use std::cell::RefCell;
use std::rc::Rc;
#[derive(PartialEq, Debug)]
struct Point {
x: isize,
y: isize
}
pub fn main() {
assert_eq!(*Rc::new(5), 5);
assert_eq!(***Rc::new(Box::new(Box::new(5))), 5);
assert_eq!(*Rc::new(Point {x: 2, y: 4}), Point {x: 2, y: 4});
let i = Rc::new(RefCell::new(2));
let i_value = *(*i).borrow();
*(*i).borrow_mut() = 5;
assert_eq!((i_value, *(*i).borrow()), (2, 5));
let s = Rc::new("foo".to_string());
assert_eq!(*s, "foo".to_string());
assert_eq!((*s), "foo");
let mut_s = Rc::new(RefCell::new(String::from("foo")));
(*(*mut_s).borrow_mut()).push_str("bar");
// assert_eq! would panic here because it stores the LHS and RHS in two locals.
assert_eq!((*(*mut_s).borrow()), "foobar");
assert_eq!((*(*mut_s).borrow_mut()), "foobar");
let p = Rc::new(RefCell::new(Point {x: 1, y: 2}));
(*(*p).borrow_mut()).x = 3;
(*(*p).borrow_mut()).y += 3;
assert_eq!(*(*p).borrow(), Point {x: 3, y: 5});
let v = Rc::new(RefCell::new(vec![1, 2, 3]));
(*(*v).borrow_mut())[0] = 3;
(*(*v).borrow_mut())[1] += 3;
assert_eq!(((*(*v).borrow())[0],
(*(*v).borrow())[1],
(*(*v).borrow())[2]), (3, 5, 3));
}
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