mute-structs
Version:
NodeJS module providing an implementation of the LogootSplit CRDT algorithm
50 lines (46 loc) • 1.99 kB
JavaScript
/*
This file is part of MUTE-structs.
Copyright (C) 2017 Matthieu Nicolas, Victorien Elvinger
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import { isInt32 } from "../../int32";
import { TextOperation } from "../textoperation";
/**
* Represents a sequence operation (insert).
*/
export class TextInsert extends TextOperation {
/**
* @constructor
* @param {number} offset - the insertion position in the sequence.
* @param {string} content - the content to be inserted in the sequence.
* @param {number} author - the author of the operation.
*/
constructor(index, content, author) {
console.assert(isInt32(index), "index ∈ int32");
console.assert(isInt32(author), "author ∈ int32");
super(index, author);
this.content = content;
}
equals(other) {
return this.index === other.index &&
this.content === other.content;
}
/**
* Apply the current insert operation to a LogootSplit document.
* @param {LogootSDocument} doc - the LogootSplit document on which the insertion wil be performed.
* @return {LogootSAdd} the logootsplit insertion that is related to the insertion that has been performed.
*/
applyTo(doc) {
return doc.insertLocal(this.index, this.content);
}
}
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