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mod replace;
pub use replace::*;
use std::ops::Index;
pub trait DiffAlgorithm {
fn diff<S: Index<usize> + ?Sized, T: Index<usize> + ?Sized, D: Diff>(
d: &mut D,
e: &S,
e0: usize,
e1: usize,
f: &T,
f0: usize,
f1: usize,
) -> Result<(), D::Error>;
}
pub mod myers;
pub mod patience;
pub mod bin;
#[cfg(test)]
mod test;
#[allow(unused_variables)]
pub trait Diff: Sized {
type Error;
fn equal(&mut self, old: usize, new: usize, len: usize) -> Result<(), Self::Error> {
Ok(())
}
fn delete(&mut self, old: usize, len: usize, new: usize) -> Result<(), Self::Error> {
Ok(())
}
fn insert(&mut self, old: usize, new: usize, new_len: usize) -> Result<(), Self::Error> {
Ok(())
}
fn replace(
&mut self,
old: usize,
old_len: usize,
new: usize,
new_len: usize,
) -> Result<(), Self::Error> {
self.delete(old, old_len, new)?;
self.insert(old, new, new_len)
}
fn finish(&mut self) -> Result<(), Self::Error> {
Ok(())
}
}
impl<'a, D: Diff + 'a> Diff for &'a mut D {
type Error = D::Error;
fn equal(&mut self, old: usize, new: usize, len: usize) -> Result<(), Self::Error> {
(*self).equal(old, new, len)
}
fn delete(&mut self, old: usize, len: usize, new: usize) -> Result<(), Self::Error> {
(*self).delete(old, len, new)
}
fn insert(&mut self, old: usize, new: usize, new_len: usize) -> Result<(), Self::Error> {
(*self).insert(old, new, new_len)
}
fn replace(
&mut self,
old: usize,
old_len: usize,
new: usize,
new_len: usize,
) -> Result<(), Self::Error> {
(*self).replace(old, old_len, new, new_len)
}
fn finish(&mut self) -> Result<(), Self::Error> {
(*self).finish()
}
}