Trait treediff::Delegate
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pub trait Delegate<'a, K, V> {
fn push<'b>(&mut self, _k: &'b K) { ... }
fn pop(&mut self) { ... }
fn removed<'b>(&mut self, _k: &'b K, _v: &'a V) { ... }
fn added<'b>(&mut self, _k: &'b K, _v: &'a V) { ... }
fn unchanged<'b>(&mut self, _v: &'a V) { ... }
fn modified<'b>(&mut self, _old: &'a V, _new: &'a V) { ... }
}The delegate receiving callbacks by the diff algorithm, which compares an old to a new value.
Type Parameters
Kis the Key's typeVis the Value's type
Methods will be called if...
Provided Methods
fn push<'b>(&mut self, _k: &'b K)
... we recurse into the Value at the given Key.
Delegates should memoize the current Key path to be able to compute the full Key path when needed.
fn pop(&mut self)
... we have processed all items and leave the object previously pushed.
fn removed<'b>(&mut self, _k: &'b K, _v: &'a V)
... the Value v at the given Key k should be removed.
Note that the Key is partial, and should be used in conjunction with the recorded Keys
received via push(...)
fn added<'b>(&mut self, _k: &'b K, _v: &'a V)
.. the Value v at the given Key k should be added.
Note that the Key is partial, and should be used in conjunction with the recorded Keys
received via push(...)
fn unchanged<'b>(&mut self, _v: &'a V)
The Value v was not changed.
fn modified<'b>(&mut self, _old: &'a V, _new: &'a V)
... the old Value was modified, and is now the new Value.