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use std::fmt;
use std::ops;
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct TextUnit(u32);
impl TextUnit {
pub fn len_of_char(c: char) -> TextUnit {
TextUnit(c.len_utf8() as u32)
}
pub fn new(val: u32) -> TextUnit {
TextUnit(val)
}
}
impl fmt::Debug for TextUnit {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
<Self as fmt::Display>::fmt(self, f)
}
}
impl fmt::Display for TextUnit {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.0.fmt(f)
}
}
impl From<TextUnit> for u32 {
fn from(tu: TextUnit) -> u32 {
tu.0
}
}
impl ops::Add<TextUnit> for TextUnit {
type Output = TextUnit;
fn add(self, rhs: TextUnit) -> TextUnit {
TextUnit(self.0 + rhs.0)
}
}
impl ops::AddAssign<TextUnit> for TextUnit {
fn add_assign(&mut self, rhs: TextUnit) {
self.0 += rhs.0
}
}
impl ops::Sub<TextUnit> for TextUnit {
type Output = TextUnit;
fn sub(self, rhs: TextUnit) -> TextUnit {
TextUnit(self.0 - rhs.0)
}
}
impl ops::SubAssign<TextUnit> for TextUnit {
fn sub_assign(&mut self, rhs: TextUnit) {
self.0 -= rhs.0
}
}
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