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feat: add delta (replace with offset) in factory
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parent
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commit
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1 changed files with 12 additions and 3 deletions
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@ -4,14 +4,21 @@ use similar::{TextDiff, ChangeTag};
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pub trait OperationFactory {
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fn content(&self) -> String;
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fn replace(&self, txt: &str) -> OperationSeq {
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fn replace(&self, txt: &str) -> OperationSeq { self.delta(0, txt, 0) }
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fn delta(&self, skip: usize, txt: &str, tail: usize) -> OperationSeq {
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let mut out = OperationSeq::default();
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let content = self.content();
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if content == txt {
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let tail_index = content.len() - tail;
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let content_slice = &content[skip..tail_index];
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if content_slice == txt {
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return out; // TODO this won't work, should we return a noop instead?
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}
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let diff = TextDiff::from_chars(content.as_str(), txt);
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out.retain(skip as u64);
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let diff = TextDiff::from_chars(content_slice, txt);
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for change in diff.iter_all_changes() {
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match change.tag() {
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@ -21,6 +28,8 @@ pub trait OperationFactory {
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}
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}
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out.retain(tail as u64);
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out
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}
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