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Add comment to STORAGE_SIZE and simplify it (#223)

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* Add comment to STORAGE_SIZE and simplify it

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Co-authored-by: RustyNixieTube <RustyNixieTube@users.noreply.github.com>
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RustyNixieTube 2021-06-19 18:47:42 +02:00 • committed by GitHub
parent 4c10afe4a4
commit 84fef8a87f
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4
core/editor/src/input/keyboard.rs
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@ -2,7 +2,9 @@ pub const NUMBER_OF_KEYS: usize = Key::NumKeys as usize;
// Edit this to specify the storage type used
// TODO: Increase size of type
pub type StorageType = u128;
const STORAGE_SIZE: u32 = std::mem::size_of::<usize>() as u32 * 8 + 2 - std::mem::size_of::<StorageType>().leading_zeros();
// base 2 logarithm of the storage type used to represents how many bits you need to fully address every bit in that storage type
const STORAGE_SIZE: u32 = (std::mem::size_of::<StorageType>() * 8).trailing_zeros();
const STORAGE_SIZE_BITS: usize = 1 << STORAGE_SIZE;
const KEY_MASK_STORAGE_LENGTH: usize = (NUMBER_OF_KEYS + STORAGE_SIZE_BITS - 1) >> STORAGE_SIZE;
pub type KeyStates = BitVector<KEY_MASK_STORAGE_LENGTH>;