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#[macro_use]
extern crate static_assertions;
#[macro_use]
mod macros;
#[cfg(test)]
mod tests;
use std::fmt::{Debug, Display, Formatter, Error};
use std::ops::{Range, Add, Mul, Neg, Sub, Div};
use std::cmp::Ordering;
#[derive(Copy, Clone, PartialEq, Eq)]
pub struct RangeType<T> {
val: T,
start: T,
end: T
}
impl<T: PartialOrd + Display> RangeType<T> {
pub fn new(val: T, range: Range<T>) -> RangeType<T> {
if val < range.start || val > range.end {
panic!("{} is not in the range {}..{}", val, range.start, range.end);
}
RangeType { val: val, start: range.start, end: range.end }
}
pub fn as_raw(self) -> T {
self.val
}
pub fn range(self) -> Range<T> {
self.start..self.end
}
pub fn with_range(self, range: Range<T>) -> RangeType<T> {
RangeType::new(self.val, range)
}
}
impl<T: Ord> Ord for RangeType<T> {
fn cmp(&self, other: &RangeType<T>) -> Ordering {
self.val.cmp(&other.val)
}
}
impl<T: Ord> PartialOrd for RangeType<T> {
fn partial_cmp(&self, other: &RangeType<T>) -> Option<Ordering> {
Some(self.val.cmp(&other.val))
}
}
impl<T: Debug> Debug for RangeType<T> {
fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
write!(f, "{:?} ", self.val)
}
}
impl<T: Display> Display for RangeType<T> {
fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
write!(f, "{}", self.val)
}
}
impl<T: Neg<Output=T> + PartialOrd + Display + Copy> Neg for RangeType<T> {
type Output = RangeType<T>;
fn neg(self) -> RangeType<T> {
RangeType::new(-self.val, self.range())
}
}
macro_rules! impl_range_op {
($trait:ident, $method:ident, $op:tt) => {
impl<T> $trait for RangeType<T>
where T: $trait<Output=T> + PartialOrd + Display + Copy {
type Output = RangeType<T>;
fn $method(self, other: RangeType<T>) -> RangeType<T> {
if self.range() != other.range() {
panic!("Ranges are unequal");
}
RangeType::new(self.val $op other.val, self.range())
}
}
}
}
impl_range_op!(Add, add, +);
impl_range_op!(Mul, mul, *);
impl_range_op!(Sub, sub, -);
impl_range_op!(Div, div, /);