@push.rocks/lik
Version:
Provides a collection of lightweight helpers and utilities for Node.js projects.
242 lines • 14.6 kB
JavaScript
import * as plugins from './classes.plugins.js';
import { FastMap } from './classes.fastmap.js';
export const uni = (prefix = 'uni') => {
return `${prefix}xxxxxxxxxxx`.replace(/[xy]/g, (c) => {
const r = (Math.random() * 16) | 0;
const v = c === 'x' ? r : (r & 0x3) | 0x8;
return v.toString(16);
});
};
/**
* allows keeping track of objects
*/
export class ObjectMap {
fastMap = new FastMap();
reverseMap = new Map();
// events
eventSubject = new plugins.smartrx.rxjs.Subject();
/**
* returns a new instance
*/
constructor() {
// nothing here
}
/**
* the number of objects in the map
*/
get length() {
return this.fastMap.size;
}
/**
* adds an object mapped to a string
* the string must be unique
*/
addMappedUnique(uniqueKeyArg, objectArg) {
this.fastMap.addToMap(uniqueKeyArg, objectArg);
this.reverseMap.set(objectArg, uniqueKeyArg);
}
/**
* fastest way to get an object from the map
* @param uniqueKey
*/
getMappedUnique(uniqueKeyArg) {
return this.fastMap.getByKey(uniqueKeyArg);
}
/**
* remove key
* @param functionArg
*/
removeMappedUnique(uniqueKey) {
const object = this.fastMap.removeFromMap(uniqueKey);
if (object !== undefined) {
this.reverseMap.delete(object);
this.eventSubject.next({
operation: 'remove',
payload: object,
});
}
return object;
}
/**
* add object to Objectmap
* returns the key for the object (existing or new)
*/
add(objectArg) {
const existingKey = this.reverseMap.get(objectArg);
if (existingKey !== undefined) {
return existingKey;
}
const uniqueKey = uni('key');
this.addMappedUnique(uniqueKey, objectArg);
this.eventSubject.next({
operation: 'add',
payload: objectArg,
});
return uniqueKey;
}
/**
* like .add but adds an whole array of objects
*/
addArray(objectArrayArg) {
for (const item of objectArrayArg) {
this.add(item);
}
}
/**
* check if object is in Objectmap
*/
checkForObject(objectArg) {
return this.reverseMap.has(objectArg);
}
/**
* get key for object
*/
getKeyForObject(objectArg) {
return this.reverseMap.get(objectArg) ?? null;
}
/**
* find object
*/
async find(findFunction) {
return this.fastMap.find(findFunction);
}
findSync(findFunction) {
for (const keyArg of this.fastMap.getKeys()) {
if (findFunction(this.fastMap.getByKey(keyArg))) {
return this.getMappedUnique(keyArg);
}
}
}
/**
* finds a specific element and then removes it
*/
async findOneAndRemove(findFunction) {
const foundElement = await this.find(findFunction);
if (foundElement) {
this.remove(foundElement);
}
return foundElement;
}
findOneAndRemoveSync(findFunction) {
const foundElement = this.findSync(findFunction);
if (foundElement) {
this.remove(foundElement);
}
return foundElement;
}
/**
* run function for each item in Objectmap
*/
async forEach(functionArg) {
for (const keyArg of this.fastMap.getKeys()) {
await functionArg(this.fastMap.getByKey(keyArg));
}
}
/**
* gets an object in the Observablemap and removes it, so it can't be retrieved again
*/
getOneAndRemove() {
const keys = this.fastMap.getKeys();
if (keys.length === 0) {
return null;
}
else {
const keyToUse = keys[0];
const removedItem = this.fastMap.removeFromMap(keyToUse);
this.reverseMap.delete(removedItem);
this.eventSubject.next({
operation: 'remove',
payload: removedItem,
});
return removedItem;
}
}
/**
* returns a cloned array of all the objects currently in the Objectmap
*/
getArray() {
return this.fastMap.values();
}
/**
* check if Objectmap ist empty
*/
isEmpty() {
return this.fastMap.size === 0;
}
/**
* remove object from Objectmap
*/
remove(objectArg) {
const keyArg = this.reverseMap.get(objectArg);
if (keyArg !== undefined) {
const removedObject = this.fastMap.removeFromMap(keyArg);
this.reverseMap.delete(removedObject);
this.eventSubject.next({
operation: 'remove',
payload: removedObject,
});
return removedObject;
}
return null;
}
/**
* wipe Objectmap
*/
wipe() {
const keys = this.fastMap.getKeys();
for (const keyArg of keys) {
const removedObject = this.fastMap.removeFromMap(keyArg);
this.reverseMap.delete(removedObject);
this.eventSubject.next({
operation: 'remove',
payload: removedObject,
});
}
}
/**
* returns a new Objectmap that includes
*/
concat(objectMapArg) {
const concattedObjectMap = new ObjectMap();
concattedObjectMap.fastMap.addAllFromOther(this.fastMap);
concattedObjectMap.fastMap.addAllFromOther(objectMapArg.fastMap);
// rebuild reverse map for the concatenated map
for (const key of concattedObjectMap.fastMap.getKeys()) {
concattedObjectMap.reverseMap.set(concattedObjectMap.fastMap.getByKey(key), key);
}
return concattedObjectMap;
}
/**
* tries to merge another Objectmap
* Note: uniqueKeyCollisions will cause overwrite
* @param objectMapArg
*/
addAllFromOther(objectMapArg) {
this.fastMap.addAllFromOther(objectMapArg.fastMap);
// rebuild reverse map
for (const key of objectMapArg.fastMap.getKeys()) {
this.reverseMap.set(objectMapArg.fastMap.getByKey(key), key);
}
}
map(fn) {
return this.getArray().map(fn);
}
filter(fn) {
return this.getArray().filter(fn);
}
reduce(fn, initial) {
return this.getArray().reduce(fn, initial);
}
[Symbol.iterator]() {
return this.getArray()[Symbol.iterator]();
}
/**
* destroys the ObjectMap, completing the eventSubject and clearing all entries
*/
destroy() {
this.wipe();
this.reverseMap.clear();
this.eventSubject.complete();
}
}
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