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[board] Create const arrays for Shape that return &'static to its enum cases

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This commit is contained in:
Eryn Wells 2023-12-31 11:40:54 -08:00
parent 878d771d86
commit 750b16970f
3 changed files with 17 additions and 8 deletions
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17
board/src/piece.rs
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@ -2,6 +2,7 @@
use crate::Square;
use std::fmt;
use std::slice::Iter;
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
pub enum Color {
@ -33,16 +34,24 @@ pub enum Shape {
}
impl Shape {
pub fn iter() -> impl Iterator<Item = Shape> {
[
pub fn iter() -> Iter<'static, Shape> {
const ALL_SHAPES: [Shape; 6] = [
Shape::Pawn,
Shape::Knight,
Shape::Bishop,
Shape::Rook,
Shape::Queen,
Shape::King,
]
.into_iter()
];
ALL_SHAPES.iter()
}
pub fn promotable() -> Iter<'static, Shape> {
const PROMOTABLE_SHAPES: [Shape; 4] =
[Shape::Queen, Shape::Rook, Shape::Bishop, Shape::Knight];
PROMOTABLE_SHAPES.iter()
}
fn _ascii_representation(&self) -> char {