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Minor optimizations

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Mark
2024-03-05 10:16:18 -08:00
parent 5f7696f865
commit 14c524c599
1 changed files with 32 additions and 10 deletions
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42
src/util.rs
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@ -69,17 +69,39 @@ impl Symb {
self == &Self::Minus
}
pub fn from_char(c: char) -> Option<Self> {
pub const fn to_char(&self) -> Option<char> {
match self {
Self::Plus => Some('+'),
Self::Minus => Some('-'),
Self::Times => Some('×'),
Self::Div => Some('÷'),
Self::Zero => Some('0'),
Self::Number(x) => match x.get() {
1 => Some('1'),
2 => Some('2'),
3 => Some('3'),
4 => Some('4'),
5 => Some('5'),
6 => Some('6'),
7 => Some('7'),
8 => Some('8'),
9 => Some('9'),
_ => None,
},
}
}
pub const fn from_char(c: char) -> Option<Self> {
match c {
'1' => Some(Self::Number(NonZeroU8::new(1).unwrap())),
'2' => Some(Self::Number(NonZeroU8::new(2).unwrap())),
'3' => Some(Self::Number(NonZeroU8::new(3).unwrap())),
'4' => Some(Self::Number(NonZeroU8::new(4).unwrap())),
'5' => Some(Self::Number(NonZeroU8::new(5).unwrap())),
'6' => Some(Self::Number(NonZeroU8::new(6).unwrap())),
'7' => Some(Self::Number(NonZeroU8::new(7).unwrap())),
'8' => Some(Self::Number(NonZeroU8::new(8).unwrap())),
'9' => Some(Self::Number(NonZeroU8::new(9).unwrap())),
'1' => Some(Self::Number(unsafe { NonZeroU8::new_unchecked(1) })),
'2' => Some(Self::Number(unsafe { NonZeroU8::new_unchecked(2) })),
'3' => Some(Self::Number(unsafe { NonZeroU8::new_unchecked(3) })),
'4' => Some(Self::Number(unsafe { NonZeroU8::new_unchecked(4) })),
'5' => Some(Self::Number(unsafe { NonZeroU8::new_unchecked(5) })),
'6' => Some(Self::Number(unsafe { NonZeroU8::new_unchecked(6) })),
'7' => Some(Self::Number(unsafe { NonZeroU8::new_unchecked(7) })),
'8' => Some(Self::Number(unsafe { NonZeroU8::new_unchecked(8) })),
'9' => Some(Self::Number(unsafe { NonZeroU8::new_unchecked(9) })),
'0' => Some(Self::Zero),
'+' => Some(Self::Plus),
'-' => Some(Self::Minus),