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impl try_from Range<usize> for textRange #51

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impl try_from Range<usize> for textRange #51

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16 changes: 16 additions & 0 deletions src/range.rs
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Original file line number Diff line number Diff line change
@@ -1,3 +1,8 @@
use std::{
convert::{TryFrom, TryInto},
num::TryFromIntError,
};

use cmp::Ordering;

use {
Expand Down Expand Up @@ -392,6 +397,17 @@ where
}
}

impl TryFrom<Range<usize>> for TextRange {
type Error = TryFromIntError;
#[inline]
fn try_from(r: Range<usize>) -> Result<Self, TryFromIntError> {
let start = r.start.try_into()?;
let end = r.end.try_into()?;
assert!(start <= end);
Ok(Self::new(start, end))
}
}

macro_rules! ops {
(impl $Op:ident for TextRange by fn $f:ident = $op:tt) => {
impl $Op<&TextSize> for TextRange {
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