#[derive(Debug, PartialEq, Clone, Copy)]
pub struct Range {
pub start: usize,
pub end: usize,
}
impl Range {
pub fn new(start: usize, end: usize) -> Self {
Range { start, end }
}
pub fn from_byte_index(pos: usize) -> Self {
Range::new(pos, pos)
}
}
impl Ranged for Range {
fn range(&self) -> &Range {
self
}
}
pub trait Ranged {
fn range(&self) -> &Range;
fn start(&self) -> usize {
self.range().start
}
fn end(&self) -> usize {
self.range().end
}
fn text<'a>(&self, text: &'a str) -> &'a str {
let range = self.range();
&text[range.start..range.end]
}
fn width(&self) -> usize {
let range = self.range();
range.end - range.start
}
}