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Adding None enum to keep/drop, cleaning up matches

This commit is contained in:
Matthew Sparks 2021-09-24 23:03:20 -04:00
parent 2d9853fbf0
commit 7e7e9e534e
3 changed files with 27 additions and 42 deletions
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18
dicebot/src/basic/dice.rs
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@ -18,20 +18,9 @@ pub struct Dice {
impl fmt::Display for Dice { impl fmt::Display for Dice {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self.keep_drop { match self.keep_drop {
KeepOrDrop::Keep(keep) => { KeepOrDrop::Keep(keep) => write!(f, "{}d{}k{}", self.count, self.sides, keep),
if keep != self.count { KeepOrDrop::Drop(drop) => write!(f, "{}d{}dh{}", self.count, self.sides, drop),
write!(f, "{}d{}k{}", self.count, self.sides, keep) KeepOrDrop::None => write!(f, "{}d{}", self.count, self.sides),
} else {
write!(f, "{}d{}", self.count, self.sides)
}
}
KeepOrDrop::Drop(drop) => {
if drop != 0 {
write!(f, "{}d{}dh{}", self.count, self.sides, drop)
} else {
write!(f, "{}d{}", self.count, self.sides)
}
}
} }
} }
} }
@ -40,6 +29,7 @@ impl fmt::Display for Dice {
pub enum KeepOrDrop { pub enum KeepOrDrop {
Keep (u32), Keep (u32),
Drop (u32), Drop (u32),
None,
} }
impl Dice { impl Dice {

50
dicebot/src/basic/parser.rs
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@ -39,7 +39,7 @@ fn parse_dice(input: &str) -> IResult<&str, Dice> {
// check for keep expression to keep highest dice (2d20k1) // check for keep expression to keep highest dice (2d20k1)
let (keep, input) = match tuple::<&str, _, (_, _), _>((tag("k"), digit1))(input) { let (keep, input) = match tuple::<&str, _, (_, _), _>((tag("k"), digit1))(input) {
// if ok, keep expression is present // if ok, keep expression is present
Ok(r) => (r.1.1, r.0), Ok((rest, (_, keep_amount))) => (keep_amount, rest),
// otherwise absent and keep all dice // otherwise absent and keep all dice
Err(_) => ("", input) Err(_) => ("", input)
}; };
@ -47,7 +47,7 @@ fn parse_dice(input: &str) -> IResult<&str, Dice> {
// check for drop expression to drop highest dice (2d20dh1) // check for drop expression to drop highest dice (2d20dh1)
let (drop, input) = match tuple::<&str, _, (_, _), _>((tag("dh"), digit1))(input) { let (drop, input) = match tuple::<&str, _, (_, _), _>((tag("dh"), digit1))(input) {
// if ok, keep expression is present // if ok, keep expression is present
Ok(r) => (r.1.1, r.0), Ok((rest, (_, drop_amount))) => (drop_amount, rest),
// otherwise absent and keep all dice // otherwise absent and keep all dice
Err(_) => ("", input) Err(_) => ("", input)
}; };
@ -57,26 +57,20 @@ fn parse_dice(input: &str) -> IResult<&str, Dice> {
// don't allow keep greater than number of dice, and don't allow keep zero // don't allow keep greater than number of dice, and don't allow keep zero
let keep_drop = match keep.parse::<u32>() { let keep_drop = match keep.parse::<u32>() {
// Ok, there's a keep value, check and create Keep // Ok, there's a keep value, check and create Keep
Ok(i) => { Ok(i) => match i {
if i > count || i == 0 { _i if _i > count || _i == 0 => KeepOrDrop::None,
KeepOrDrop::Keep(count) i => KeepOrDrop::Keep(i),
} else {
KeepOrDrop::Keep(i)
}
}, },
// Err, check if drop works // Err, check if drop works
Err(_) => { Err(_) => {
match drop.parse::<u32>() { match drop.parse::<u32>() {
// Ok, there's a drop value, check and create Drop // Ok, there's a drop value, check and create Drop
Ok(i) => { Ok(i) => match i {
if i >= count { _i if i >= count => KeepOrDrop::None,
KeepOrDrop::Keep(count) i => KeepOrDrop::Drop(i),
} else {
KeepOrDrop::Drop(i)
}
}, },
// Err, there's neither keep nor drop // Err, there's neither keep nor drop
Err(_) => KeepOrDrop::Keep(count), Err(_) => KeepOrDrop::None,
} }
}, },
}; };
@ -155,25 +149,25 @@ mod tests {
use super::*; use super::*;
#[test] #[test]
fn dice_test() { fn dice_test() {
assert_eq!(parse_dice("2d4"), Ok(("", Dice::new(2, 4, KeepOrDrop::Keep(2))))); assert_eq!(parse_dice("2d4"), Ok(("", Dice::new(2, 4, KeepOrDrop::None))));
assert_eq!(parse_dice("20d40"), Ok(("", Dice::new(20, 40, KeepOrDrop::Keep(20))))); assert_eq!(parse_dice("20d40"), Ok(("", Dice::new(20, 40, KeepOrDrop::None))));
assert_eq!(parse_dice("8d7"), Ok(("", Dice::new(8, 7, KeepOrDrop::Keep(8))))); assert_eq!(parse_dice("8d7"), Ok(("", Dice::new(8, 7, KeepOrDrop::None))));
assert_eq!(parse_dice("2d20k1"), Ok(("", Dice::new(2, 20, KeepOrDrop::Keep(1))))); assert_eq!(parse_dice("2d20k1"), Ok(("", Dice::new(2, 20, KeepOrDrop::Keep(1)))));
assert_eq!(parse_dice("100d10k90"), Ok(("", Dice::new(100, 10, KeepOrDrop::Keep(90))))); assert_eq!(parse_dice("100d10k90"), Ok(("", Dice::new(100, 10, KeepOrDrop::Keep(90)))));
assert_eq!(parse_dice("11d10k10"), Ok(("", Dice::new(11, 10, KeepOrDrop::Keep(10))))); assert_eq!(parse_dice("11d10k10"), Ok(("", Dice::new(11, 10, KeepOrDrop::Keep(10)))));
assert_eq!(parse_dice("12d10k11"), Ok(("", Dice::new(12, 10, KeepOrDrop::Keep(11))))); assert_eq!(parse_dice("12d10k11"), Ok(("", Dice::new(12, 10, KeepOrDrop::Keep(11)))));
assert_eq!(parse_dice("12d10k13"), Ok(("", Dice::new(12, 10, KeepOrDrop::Keep(12))))); assert_eq!(parse_dice("12d10k13"), Ok(("", Dice::new(12, 10, KeepOrDrop::None))));
assert_eq!(parse_dice("12d10k0"), Ok(("", Dice::new(12, 10, KeepOrDrop::Keep(12))))); assert_eq!(parse_dice("12d10k0"), Ok(("", Dice::new(12, 10, KeepOrDrop::None))));
assert_eq!(parse_dice("20d40dh5"), Ok(("", Dice::new(20, 40, KeepOrDrop::Drop(5))))); assert_eq!(parse_dice("20d40dh5"), Ok(("", Dice::new(20, 40, KeepOrDrop::Drop(5)))));
assert_eq!(parse_dice("8d7dh9"), Ok(("", Dice::new(8, 7, KeepOrDrop::Keep(8))))); assert_eq!(parse_dice("8d7dh9"), Ok(("", Dice::new(8, 7, KeepOrDrop::None))));
assert_eq!(parse_dice("8d7dh8"), Ok(("", Dice::new(8, 7, KeepOrDrop::Keep(8))))); assert_eq!(parse_dice("8d7dh8"), Ok(("", Dice::new(8, 7, KeepOrDrop::None))));
} }
#[test] #[test]
fn element_test() { fn element_test() {
assert_eq!( assert_eq!(
parse_element(" \t\n\r\n 8d7 \n"), parse_element(" \t\n\r\n 8d7 \n"),
Ok((" \n", Element::Dice(Dice::new(8, 7, KeepOrDrop::Keep(8))))) Ok((" \n", Element::Dice(Dice::new(8, 7, KeepOrDrop::None))))
); );
assert_eq!( assert_eq!(
parse_element(" \t\n\r\n 3d20k2 \n"), parse_element(" \t\n\r\n 3d20k2 \n"),
@ -199,7 +193,7 @@ mod tests {
parse_signed_element(" \t\n\r\n- 8d4 \n"), parse_signed_element(" \t\n\r\n- 8d4 \n"),
Ok(( Ok((
" \n", " \n",
SignedElement::Negative(Element::Dice(Dice::new(8, 4, KeepOrDrop::Keep(8)))) SignedElement::Negative(Element::Dice(Dice::new(8, 4, KeepOrDrop::None)))
)) ))
); );
assert_eq!( assert_eq!(
@ -213,7 +207,7 @@ mod tests {
parse_signed_element(" \t\n\r\n+ 8d4 \n"), parse_signed_element(" \t\n\r\n+ 8d4 \n"),
Ok(( Ok((
" \n", " \n",
SignedElement::Positive(Element::Dice(Dice::new(8, 4, KeepOrDrop::Keep(8)))) SignedElement::Positive(Element::Dice(Dice::new(8, 4, KeepOrDrop::None)))
)) ))
); );
} }
@ -225,7 +219,7 @@ mod tests {
Ok(( Ok((
"", "",
ElementExpression(vec![SignedElement::Positive(Element::Dice(Dice::new( ElementExpression(vec![SignedElement::Positive(Element::Dice(Dice::new(
8, 4, KeepOrDrop::Keep(8) 8, 4, KeepOrDrop::None
)))]) )))])
)) ))
); );
@ -244,7 +238,7 @@ mod tests {
Ok(( Ok((
" \n ", " \n ",
ElementExpression(vec![SignedElement::Negative(Element::Dice(Dice::new( ElementExpression(vec![SignedElement::Negative(Element::Dice(Dice::new(
8, 4, KeepOrDrop::Keep(8) 8, 4, KeepOrDrop::None
)))]) )))])
)) ))
); );
@ -257,7 +251,7 @@ mod tests {
SignedElement::Positive(Element::Bonus(7)), SignedElement::Positive(Element::Bonus(7)),
SignedElement::Negative(Element::Bonus(5)), SignedElement::Negative(Element::Bonus(5)),
SignedElement::Negative(Element::Dice(Dice::new(6, 12, KeepOrDrop::Drop(3)))), SignedElement::Negative(Element::Dice(Dice::new(6, 12, KeepOrDrop::Drop(3)))),
SignedElement::Positive(Element::Dice(Dice::new(1, 1, KeepOrDrop::Keep(1)))), SignedElement::Positive(Element::Dice(Dice::new(1, 1, KeepOrDrop::None))),
SignedElement::Positive(Element::Bonus(53)), SignedElement::Positive(Element::Bonus(53)),
]) ])
)) ))

1
dicebot/src/basic/roll.rs
View File

@ -90,6 +90,7 @@ impl Roll for dice::Dice {
match self.keep_drop { match self.keep_drop {
KeepOrDrop::Keep(k) => DiceRoll(rolls,k as usize, 0), KeepOrDrop::Keep(k) => DiceRoll(rolls,k as usize, 0),
KeepOrDrop::Drop(dh) => DiceRoll(rolls,self.count as usize, dh as usize), KeepOrDrop::Drop(dh) => DiceRoll(rolls,self.count as usize, dh as usize),
KeepOrDrop::None => DiceRoll(rolls,self.count as usize, 0),
} }
} }
} }