38 lines
870 B
Rust
38 lines
870 B
Rust
#![allow(unused_variables, clippy::many_single_char_names, clippy::clone_double_ref)]
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#![warn(clippy::explicit_deref_method)]
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use std::ops::{Deref, DerefMut};
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fn main() {
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let a: &mut String = &mut String::from("foo");
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// these should require linting
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let b: &str = a.deref();
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let b: &mut str = a.deref_mut();
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let b: String = a.deref().clone();
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let b: usize = a.deref_mut().len();
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let b: &usize = &a.deref().len();
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// only first deref should get linted here
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let b: &str = a.deref().deref();
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// both derefs should get linted here
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let b: String = format!("{}, {}", a.deref(), a.deref());
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// these should not require linting
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let b: &str = &*a;
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let b: &mut str = &mut *a;
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macro_rules! expr_deref {
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($body:expr) => {
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$body.deref()
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};
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}
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let b: &str = expr_deref!(a);
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}
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