40ae34194c
detects redundant imports that can be eliminated. for #117772 : In order to facilitate review and modification, split the checking code and removing redundant imports code into two PR.
43 lines
1.2 KiB
Rust
43 lines
1.2 KiB
Rust
// run-pass
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use std::cell::RefCell;
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use std::rc::Rc;
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#[derive(PartialEq, Debug)]
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struct Point {
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x: isize,
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y: isize
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}
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pub fn main() {
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assert_eq!(*Rc::new(5), 5);
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assert_eq!(***Rc::new(Box::new(Box::new(5))), 5);
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assert_eq!(*Rc::new(Point {x: 2, y: 4}), Point {x: 2, y: 4});
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let i = Rc::new(RefCell::new(2));
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let i_value = *(*i).borrow();
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*(*i).borrow_mut() = 5;
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assert_eq!((i_value, *(*i).borrow()), (2, 5));
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let s = Rc::new("foo".to_string());
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assert_eq!(*s, "foo".to_string());
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assert_eq!((*s), "foo");
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let mut_s = Rc::new(RefCell::new(String::from("foo")));
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(*(*mut_s).borrow_mut()).push_str("bar");
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// assert_eq! would panic here because it stores the LHS and RHS in two locals.
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assert_eq!((*(*mut_s).borrow()), "foobar");
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assert_eq!((*(*mut_s).borrow_mut()), "foobar");
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let p = Rc::new(RefCell::new(Point {x: 1, y: 2}));
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(*(*p).borrow_mut()).x = 3;
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(*(*p).borrow_mut()).y += 3;
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assert_eq!(*(*p).borrow(), Point {x: 3, y: 5});
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let v = Rc::new(RefCell::new(vec![1, 2, 3]));
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(*(*v).borrow_mut())[0] = 3;
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(*(*v).borrow_mut())[1] += 3;
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assert_eq!(((*(*v).borrow())[0],
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(*(*v).borrow())[1],
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(*(*v).borrow())[2]), (3, 5, 3));
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}
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