306 lines
6.6 KiB
Rust
306 lines
6.6 KiB
Rust
/* OpenTally: Open-source election vote counting
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* Copyright © 2021 Lee Yingtong Li (RunasSudo)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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use num_traits::{Num, NumAssignRef, NumRef, One, Zero};
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use rug::{self, Assign, ops::Pow, rational::ParseRationalError};
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use std::cmp::{Ordering, PartialEq, PartialOrd};
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use std::convert::TryInto;
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use std::fmt;
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use std::ops;
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//pub trait Number: NumRef + NumAssignRef + PartialOrd + Assign + Clone + fmt::Display where for<'a> &'a Self: RefNum<&'a Self> {
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pub trait Number: NumRef + NumAssignRef + ops::Neg<Output=Self> + PartialOrd + Assign + Clone + fmt::Display where for<'a> Self: Assign<&'a Self>{
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fn new() -> Self;
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fn from(n: usize) -> Self;
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fn floor_mut(&mut self);
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fn parse(s: &str) -> Self {
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if let Ok(value) = Self::from_str_radix(s, 10) {
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return value;
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} else {
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panic!("Syntax Error");
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}
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}
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}
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pub struct Rational(rug::Rational);
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impl Number for Rational {
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fn new() -> Self { Self(rug::Rational::new()) }
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fn from(n: usize) -> Self { Self(rug::Rational::from(n)) }
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fn floor_mut(&mut self) { self.0.floor_mut() }
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}
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impl Num for Rational {
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type FromStrRadixErr = ParseRationalError;
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fn from_str_radix(str: &str, radix: u32) -> Result<Self, Self::FromStrRadixErr> {
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match rug::Rational::parse_radix(str, radix.try_into().unwrap()) {
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Ok(value) => Ok(Self(rug::Rational::from(value))),
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Err(err) => Err(err)
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}
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}
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}
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impl Assign for Rational {
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fn assign(&mut self, src: Self) { self.0.assign(src.0) }
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}
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impl Assign<&Rational> for Rational {
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fn assign(&mut self, src: &Rational) { self.0.assign(&src.0) }
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}
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impl Clone for Rational {
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fn clone(&self) -> Self { Self(self.0.clone()) }
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}
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impl fmt::Display for Rational {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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if let Some(precision) = f.precision() {
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if precision == 0 {
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let result = rug::Integer::from((&self.0).round_ref()).to_string();
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return f.write_str(&result);
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} else {
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let base = rug::Rational::from(10).pow(precision as u32);
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let mut result = rug::Integer::from((&self.0 * base).round_ref()).to_string();
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// Add leading 0s
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result = format!("{0:0>1$}", result, precision + 1);
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// Add the decimal point
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result.insert(result.len() - precision, '.');
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return f.write_str(&result);
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}
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} else {
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return self.0.fmt(f);
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}
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}
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}
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impl One for Rational {
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fn one() -> Self { Rational(rug::Rational::from(1)) }
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}
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impl Zero for Rational {
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fn zero() -> Self { Self::new() }
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fn is_zero(&self) -> bool { self.0 == rug::Rational::new() }
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}
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impl PartialEq for Rational {
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fn eq(&self, _other: &Self) -> bool {
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todo!()
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}
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}
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impl PartialOrd for Rational {
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fn partial_cmp(&self, other: &Self) -> Option<Ordering> { self.0.partial_cmp(&other.0) }
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}
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impl ops::Neg for Rational {
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type Output = Rational;
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fn neg(self) -> Self::Output { Rational(-self.0) }
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}
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impl ops::Add for Rational {
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type Output = Rational;
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fn add(self, _rhs: Self) -> Self::Output {
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todo!()
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}
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}
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impl ops::Sub for Rational {
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type Output = Rational;
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fn sub(self, _rhs: Self) -> Self::Output {
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todo!()
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}
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}
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impl ops::Mul for Rational {
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type Output = Rational;
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fn mul(self, _rhs: Self) -> Self::Output {
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todo!()
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}
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}
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impl ops::Div for Rational {
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type Output = Rational;
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fn div(self, _rhs: Self) -> Self::Output {
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todo!()
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}
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}
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impl ops::Rem for Rational {
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type Output = Rational;
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fn rem(self, _rhs: Self) -> Self::Output {
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todo!()
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}
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}
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impl ops::Add<&Rational> for Rational {
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type Output = Rational;
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fn add(self, _rhs: &Rational) -> Self::Output {
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todo!()
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}
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}
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impl ops::Sub<&Rational> for Rational {
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type Output = Rational;
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fn sub(self, _rhs: &Rational) -> Self::Output {
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todo!()
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}
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}
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impl ops::Mul<&Rational> for Rational {
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type Output = Rational;
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fn mul(self, rhs: &Rational) -> Self::Output { Rational(self.0 * &rhs.0) }
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}
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impl ops::Div<&Rational> for Rational {
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type Output = Rational;
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fn div(self, rhs: &Rational) -> Self::Output { Rational(self.0 / &rhs.0) }
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}
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impl ops::Rem<&Rational> for Rational {
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type Output = Rational;
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fn rem(self, _rhs: &Rational) -> Self::Output {
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todo!()
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}
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}
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impl ops::AddAssign for Rational {
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fn add_assign(&mut self, rhs: Self) { self.0 += rhs.0 }
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}
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impl ops::SubAssign for Rational {
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fn sub_assign(&mut self, _rhs: Self) {
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todo!()
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}
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}
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impl ops::MulAssign for Rational {
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fn mul_assign(&mut self, _rhs: Self) {
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todo!()
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}
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}
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impl ops::DivAssign for Rational {
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fn div_assign(&mut self, rhs: Self) {
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self.0 /= &rhs.0;
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}
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}
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impl ops::RemAssign for Rational {
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fn rem_assign(&mut self, _rhs: Self) {
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todo!()
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}
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}
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impl ops::AddAssign<&Rational> for Rational {
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fn add_assign(&mut self, rhs: &Rational) {
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self.0 += &rhs.0;
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}
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}
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impl ops::SubAssign<&Rational> for Rational {
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fn sub_assign(&mut self, _rhs: &Rational) {
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todo!()
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}
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}
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impl ops::MulAssign<&Rational> for Rational {
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fn mul_assign(&mut self, _rhs: &Rational) {
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todo!()
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}
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}
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impl ops::DivAssign<&Rational> for Rational {
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fn div_assign(&mut self, _rhs: &Rational) {
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todo!()
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}
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}
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impl ops::RemAssign<&Rational> for Rational {
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fn rem_assign(&mut self, _rhs: &Rational) {
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todo!()
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}
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}
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impl ops::Add<&Rational> for &Rational {
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type Output = Rational;
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fn add(self, _rhs: &Rational) -> Self::Output {
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todo!()
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}
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}
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impl ops::Sub<&Rational> for &Rational {
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type Output = Rational;
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fn sub(self, rhs: &Rational) -> Self::Output {
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return Rational(rug::Rational::from(&self.0 - &rhs.0));
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}
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}
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impl ops::Mul<&Rational> for &Rational {
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type Output = Rational;
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fn mul(self, _rhs: &Rational) -> Self::Output {
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todo!()
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}
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}
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impl ops::Div<&Rational> for &Rational {
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type Output = Rational;
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fn div(self, _rhs: &Rational) -> Self::Output {
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todo!()
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}
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}
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impl ops::Rem<&Rational> for &Rational {
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type Output = Rational;
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fn rem(self, _rhs: &Rational) -> Self::Output {
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todo!()
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}
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}
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/*
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impl ops::Add<&&Rational> for &Rational {
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}
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impl ops::Sub<&&Rational> for &Rational {
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}
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impl ops::Mul<&&Rational> for &Rational {
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}
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impl ops::Div<&&Rational> for &Rational {
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}
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impl ops::Rem<&&Rational> for &Rational {
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}
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*/
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pub type NumType = Rational;
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