mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-19 01:24:05 +00:00
32 lines
1.3 KiB
Rust
32 lines
1.3 KiB
Rust
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#![warn(clippy::manual_rotate)]
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#![allow(unused)]
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fn main() {
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let (x_u8, x_u16, x_u32, x_u64) = (1u8, 1u16, 1u32, 1u64);
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let (x_i8, x_i16, x_i32, x_i64) = (1i8, 1i16, 1i32, 1i64);
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let a_u32 = 1u32;
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// True positives
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let y_u8 = (x_u8 >> 3) | (x_u8 << 5);
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let y_u16 = (x_u16 >> 7) | (x_u16 << 9);
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let y_u32 = (x_u32 >> 8) | (x_u32 << 24);
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let y_u64 = (x_u64 >> 9) | (x_u64 << 55);
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let y_i8 = (x_i8 >> 3) | (x_i8 << 5);
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let y_i16 = (x_i16 >> 7) | (x_i16 << 9);
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let y_i32 = (x_i32 >> 8) | (x_i32 << 24);
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let y_i64 = (x_i64 >> 9) | (x_i64 << 55);
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// Plus also works instead of |
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let y_u32_plus = (x_u32 >> 8) + (x_u32 << 24);
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// Complex expression
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let y_u32_complex = ((x_u32 | 3256) >> 8) | ((x_u32 | 3256) << 24);
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let y_u64_as = (x_u32 as u64 >> 8) | ((x_u32 as u64) << 56);
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// False positives - can't be replaced with a rotation
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let y_u8_false = (x_u8 >> 6) | (x_u8 << 3);
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let y_u32_false = (x_u32 >> 8) | (x_u32 >> 24);
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let y_u64_false2 = (x_u64 >> 9) & (x_u64 << 55);
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// Variable mismatch
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let y_u32_wrong_vars = (x_u32 >> 8) | (a_u32 << 24);
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// Has side effects and therefore should not be matched
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let mut l = vec![12_u8, 34];
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let y = (l.pop().unwrap() << 3) + (l.pop().unwrap() >> 5);
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}
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