61 lines
1.4 KiB
Rust
61 lines
1.4 KiB
Rust
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//region Clippy config
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#![warn(clippy::pedantic)]
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//disable silly rules
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#![allow(
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clippy::module_name_repetitions, //complains about function names which makes no sense, so disabled
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clippy::must_use_candidate, //no i dont want to add the must_use attribute to everything
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clippy::cast_lossless, clippy::cast_possible_wrap, //lossy casts are required to work with garbage WinApi
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)]
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//endregion
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pub mod logging;
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pub mod key;
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//TODO generify this?
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impl FlagOperations for u32 {
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fn has_one_bit_set(&self) -> bool {
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*self > 0 && *self & (*self - 1) == 0
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}
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fn get_flag(&self, flag: Self) -> bool {
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if flag.has_one_bit_set() {
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self & flag != 0
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} else {
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panic!("flag must have 1 bit set")
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}
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}
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}
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trait FlagOperations {
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///true if exactly 1 bit of the given number is set
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fn has_one_bit_set(&self) -> bool;
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///gets the flag at the position of `flag`. `flag` must have exactly 1 bit set
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/// `flag` should have 1 bit set at the position of the flag to get
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fn get_flag(&self, flag: Self) -> bool;
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}
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#[cfg(test)]
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mod tests {
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use crate::FlagOperations;
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#[test]
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fn get_flag() {
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assert!(5u32.get_flag(1 << 2));
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assert!(!3u32.get_flag(1 << 2));
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}
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#[test]
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#[should_panic]
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fn get_flag_panic() {
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0u32.get_flag(3);
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}
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#[test]
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fn has_one_bit_set() {
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assert!(1u32.has_one_bit_set());
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assert!(!3u32.has_one_bit_set());
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}
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}
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