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26 lines
678 B
Rust
26 lines
678 B
Rust
pub struct Change {
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from: usize,
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to: usize,
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insert: Option<String>,
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}
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impl Change {
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pub fn new(from: usize, to: usize, insert: Option<String>) {
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// old_extent, new_extent, insert
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}
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}
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pub struct Transaction {}
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// ChangeSpec = Change | ChangeSet | Vec<Change>
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// ChangeDesc as a ChangeSet without text: can't be applied, cheaper to store.
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// ChangeSet = ChangeDesc with Text
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pub struct ChangeSet {
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// basically Vec<ChangeDesc> where ChangeDesc = (current len, replacement len?)
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// (0, n>0) for insertion, (n>0, 0) for deletion, (>0, >0) for replacement
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sections: Vec<(usize, isize)>,
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}
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//
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// trait Transaction
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// trait StrictTransaction
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