"use strict";
/**
* @license
* Copyright 2023 Google Inc.
* SPDX-License-Identifier: Apache-2.0
*/
var __addDisposableResource = (this && this.__addDisposableResource) || function (env, value, async) {
if (value !== null && value !== void 0) {
if (typeof value !== "object" && typeof value !== "function") throw new TypeError("Object expected.");
var dispose;
if (async) {
if (!Symbol.asyncDispose) throw new TypeError("Symbol.asyncDispose is not defined.");
dispose = value[Symbol.asyncDispose];
}
if (dispose === void 0) {
if (!Symbol.dispose) throw new TypeError("Symbol.dispose is not defined.");
dispose = value[Symbol.dispose];
}
if (typeof dispose !== "function") throw new TypeError("Object not disposable.");
env.stack.push({ value: value, dispose: dispose, async: async });
}
else if (async) {
env.stack.push({ async: true });
}
return value;
};
var __disposeResources = (this && this.__disposeResources) || (function (SuppressedError) {
return function (env) {
function fail(e) {
env.error = env.hasError ? new SuppressedError(e, env.error, "An error was suppressed during disposal.") : e;
env.hasError = true;
}
function next() {
while (env.stack.length) {
var rec = env.stack.pop();
try {
var result = rec.dispose && rec.dispose.call(rec.value);
if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });
}
catch (e) {
fail(e);
}
}
if (env.hasError) throw env.error;
}
return next();
};
})(typeof SuppressedError === "function" ? SuppressedError : function (error, suppressed, message) {
var e = new Error(message);
return e.name = "SuppressedError", e.error = error, e.suppressed = suppressed, e;
});
Object.defineProperty(exports, "__esModule", { value: true });
exports.bubble = exports.guarded = exports.invokeAtMostOnceForArguments = exports.inertIfDisposed = exports.throwIfDisposed = exports.moveable = void 0;
const disposable_js_1 = require("./disposable.js");
const Mutex_js_1 = require("./Mutex.js");
const instances = new WeakSet();
function moveable(Class, _) {
let hasDispose = false;
if (Class.prototype[disposable_js_1.disposeSymbol]) {
const dispose = Class.prototype[disposable_js_1.disposeSymbol];
Class.prototype[disposable_js_1.disposeSymbol] = function () {
if (instances.has(this)) {
instances.delete(this);
return;
}
return dispose.call(this);
};
hasDispose = true;
}
if (Class.prototype[disposable_js_1.asyncDisposeSymbol]) {
const asyncDispose = Class.prototype[disposable_js_1.asyncDisposeSymbol];
Class.prototype[disposable_js_1.asyncDisposeSymbol] = function () {
if (instances.has(this)) {
instances.delete(this);
return;
}
return asyncDispose.call(this);
};
hasDispose = true;
}
if (hasDispose) {
Class.prototype.move = function () {
instances.add(this);
return this;
};
}
return Class;
}
exports.moveable = moveable;
function throwIfDisposed(message = value => {
return `Attempted to use disposed ${value.constructor.name}.`;
}) {
return (target, _) => {
return function (...args) {
if (this.disposed) {
throw new Error(message(this));
}
return target.call(this, ...args);
};
};
}
exports.throwIfDisposed = throwIfDisposed;
function inertIfDisposed(target, _) {
return function (...args) {
if (this.disposed) {
return;
}
return target.call(this, ...args);
};
}
exports.inertIfDisposed = inertIfDisposed;
/**
* The decorator only invokes the target if the target has not been invoked with
* the same arguments before. The decorated method throws an error if it's
* invoked with a different number of elements: if you decorate a method, it
* should have the same number of arguments
*
* @internal
*/
function invokeAtMostOnceForArguments(target, _) {
const cache = new WeakMap();
let cacheDepth = -1;
return function (...args) {
if (cacheDepth === -1) {
cacheDepth = args.length;
}
if (cacheDepth !== args.length) {
throw new Error('Memoized method was called with the wrong number of arguments');
}
let freshArguments = false;
let cacheIterator = cache;
for (const arg of args) {
if (cacheIterator.has(arg)) {
cacheIterator = cacheIterator.get(arg);
}
else {
freshArguments = true;
cacheIterator.set(arg, new WeakMap());
cacheIterator = cacheIterator.get(arg);
}
}
if (!freshArguments) {
return;
}
return target.call(this, ...args);
};
}
exports.invokeAtMostOnceForArguments = invokeAtMostOnceForArguments;
function guarded(getKey = function () {
return this;
}) {
return (target, _) => {
const mutexes = new WeakMap();
return async function (...args) {
const env_1 = { stack: [], error: void 0, hasError: false };
try {
const key = getKey.call(this);
let mutex = mutexes.get(key);
if (!mutex) {
mutex = new Mutex_js_1.Mutex();
mutexes.set(key, mutex);
}
const _ = __addDisposableResource(env_1, await mutex.acquire(), true);
return await target.call(this, ...args);
}
catch (e_1) {
env_1.error = e_1;
env_1.hasError = true;
}
finally {
const result_1 = __disposeResources(env_1);
if (result_1)
await result_1;
}
};
};
}
exports.guarded = guarded;
const bubbleHandlers = new WeakMap();
const bubbleInitializer = function (events) {
const handlers = bubbleHandlers.get(this) ?? new Map();
if (handlers.has(events)) {
return;
}
const handler = events !== undefined
? (type, event) => {
if (events.includes(type)) {
this.emit(type, event);
}
}
: (type, event) => {
this.emit(type, event);
};
handlers.set(events, handler);
bubbleHandlers.set(this, handlers);
};
/**
* Event emitter fields marked with `bubble` will have their events bubble up
* the field owner.
*/
// The type is too complicated to type.
// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
function bubble(events) {
return ({ set, get }, context) => {
context.addInitializer(function () {
return bubbleInitializer.apply(this, [events]);
});
return {
set(emitter) {
const handler = bubbleHandlers.get(this).get(events);
// In case we are re-setting.
const oldEmitter = get.call(this);
if (oldEmitter !== undefined) {
oldEmitter.off('*', handler);
}
if (emitter === undefined) {
return;
}
emitter.on('*', handler);
set.call(this, emitter);
},
init(emitter) {
if (emitter === undefined) {
return emitter;
}
bubbleInitializer.apply(this, [events]);
const handler = bubbleHandlers.get(this).get(events);
emitter.on('*', handler);
return emitter;
},
};
};
}
exports.bubble = bubble;
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