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buffer_map.ts
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buffer_map.ts
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/*
* Copyright 漏 2020 Lisk Foundation
*
* See the LICENSE file at the top-level directory of this distribution
* for licensing information.
*
* Unless otherwise agreed in a custom licensing agreement with the Lisk Foundation,
* no part of this software, including this file, may be copied, modified,
* propagated, or distributed except according to the terms contained in the
* LICENSE file.
*
* Removal or modification of this copyright notice is prohibited.
*/
import { keyString } from './buffer_string';
// eslint-disable-next-line import/order
import cloneDeep = require('lodash.clonedeep');
export class BufferMap<V> {
private _data: { [key: string]: V | undefined } = {};
public constructor(data?: { [key: string]: V | undefined }) {
this._data = data ?? {};
}
public get size(): number {
return Object.keys(this._data).length;
}
public get(key: Buffer): V | undefined {
return this._data[keyString(key)];
}
public delete(key: Buffer): void {
delete this._data[keyString(key)];
}
public set(key: Buffer, value: V): void {
this._data[keyString(key)] = value;
}
public has(key: Buffer): boolean {
return this._data[keyString(key)] !== undefined;
}
public clone(): BufferMap<V> {
return new BufferMap(cloneDeep(this._data));
}
public entries(): [Buffer, V][] {
return Object.entries(this._data).map(([key, value]) => [
Buffer.from(key, 'binary'),
value,
]) as [Buffer, V][];
}
public values(): V[] {
return Object.values(this._data as { [key: string]: V });
}
}