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[board] Return copies of rank and file bitboards from static lists

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This commit is contained in:
Eryn Wells 2023-12-31 09:26:20 -08:00
parent e30bcb3105
commit 1cc8b4520f
3 changed files with 31 additions and 4 deletions
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9
board/src/bitboard/bitboard.rs
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@ -1,5 +1,6 @@
// Eryn Wells <eryn@erynwells.me>
use super::library::{FILES, RANKS};
use super::BitScanner;
use crate::Square;
use std::fmt;
@ -17,14 +18,14 @@ impl BitBoard {
BitBoard(bits)
}
pub fn rank(rank: u8) -> BitBoard {
pub fn rank(rank: usize) -> BitBoard {
assert!(rank < 8);
BitBoard(0xFF).shift_north(rank)
RANKS[rank]
}
pub fn file(file: u8) -> BitBoard {
pub fn file(file: usize) -> BitBoard {
assert!(file < 8);
BitBoard(0x0101010101010101).shift_east(file)
FILES[file]
}
pub fn is_empty(&self) -> bool {