30 lines
659 B
Rust
30 lines
659 B
Rust
#![deny(clippy::index_refutable_slice)]
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extern crate if_chain;
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use if_chain::if_chain;
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macro_rules! if_let_slice_macro {
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() => {
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// This would normally be linted
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let slice: Option<&[u32]> = Some(&[1, 2, 3]);
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if let Some(slice) = slice {
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println!("{}", slice[0]);
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}
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};
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}
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fn main() {
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// Don't lint this
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if_let_slice_macro!();
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// Do lint this
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if_chain! {
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let slice: Option<&[u32]> = Some(&[1, 2, 3]);
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if let Some(slice) = slice;
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//~^ ERROR: this binding can be a slice pattern to avoid indexing
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then {
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println!("{}", slice[0]);
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}
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}
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}
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