mute-structs/dist/module/operations/delete/textdelete.js

NodeJS module providing an implementation of the LogootSplit CRDT algorithm

/*
    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/>.
*/
var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
        return extendStatics(d, b);
    };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
import { isInt32 } from "../../int32";
import { TextOperation } from "../textoperation";
/**
 * Represents a sequence operation (deletion).
 */
var TextDelete = /** @class */ (function (_super) {
    __extends(TextDelete, _super);
    /**
     * @constructor
     * @param {number} index - the position of the first element to be deleted in the sequence.
     * @param {number} length - the length of the range to be deleted in the sequence.
     * @param {number} author - the author of the operation.
     */
    function TextDelete(index, length, author) {
        var _this = this;
        console.assert(isInt32(index), "index  ∈ int32");
        console.assert(isInt32(length), "length  ∈ int32");
        console.assert(length > 0, "length > 0");
        console.assert(isInt32(author), "author ∈ int32");
        _this = _super.call(this, index, author) || this;
        _this.length = length;
        return _this;
    }
    TextDelete.prototype.equals = function (other) {
        return this.index === other.index &&
            this.length === other.length;
    };
    /**
     * Apply the current delete operation to a LogootSplit document.
     * @param {LogootSDocument} doc - the LogootSplit document on which the deletion wil be performed.
     * @return {LogootSDel} the logootsplit deletion that is related to the deletion that has been performed.
     */
    TextDelete.prototype.applyTo = function (doc) {
        return doc.delLocal(this.index, this.index + this.length - 1);
    };
    return TextDelete;
}(TextOperation));
export { TextDelete };
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