////  ScriptCache.cpp//  libraries/script-engine/src////  Created by Brad Hefta-Gaub on 2015-03-30//  Copyright 2015 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include <QCoreApplication>#include <QEventLoop>#include <QNetworkAccessManager>#include <QNetworkConfiguration>#include <QNetworkReply>#include <QObject> #include <assert.h>#include <SharedUtil.h> #include "ScriptCache.h"#include "ScriptEngineLogging.h" ScriptCache::ScriptCache(QObject* parent) {    // nothing to do here...} QString ScriptCache::getScript(const QUrl& url, ScriptUser* scriptUser, bool& isPending, bool reload) {    //assert(!_scriptCache.contains(url) || !reload);     QString scriptContents;    if (_scriptCache.contains(url) && !reload) {        qCDebug(scriptengine) << "Found script in cache:" << url.toString();        scriptContents = _scriptCache[url];        scriptUser->scriptContentsAvailable(url, scriptContents);        isPending = false;    } else {        isPending = true;        bool alreadyWaiting = _scriptUsers.contains(url);        _scriptUsers.insert(url, scriptUser);         if (alreadyWaiting) {            qCDebug(scriptengine) << "Already downloading script at:" << url.toString();        } else {            auto request = ResourceManager::createResourceRequest(this, url);            request->setCacheEnabled(!reload);            connect(request, &ResourceRequest::finished, this, &ScriptCache::scriptDownloaded);            request->send();        }    }    return scriptContents;} void ScriptCache::deleteScript(const QUrl& url) {    if (_scriptCache.contains(url)) {        qCDebug(scriptengine) << "Delete script from cache:" << url.toString();        _scriptCache.remove(url);    }} void ScriptCache::scriptDownloaded() {    ResourceRequest* req = qobject_cast<ResourceRequest*>(sender());    QUrl url = req->getUrl();    QList<ScriptUser*> scriptUsers = _scriptUsers.values(url);    _scriptUsers.remove(url);     if (req->getResult() == ResourceRequest::SUCCESS) {        _scriptCache[url] = req->getData();        qCDebug(scriptengine) << "Done downloading script at:" << url.toString();         foreach(ScriptUser* user, scriptUsers) {            user->scriptContentsAvailable(url, _scriptCache[url]);        }    } else {        qCWarning(scriptengine) << "Error loading script from URL " << url;        foreach(ScriptUser* user, scriptUsers) {            user->errorInLoadingScript(url);        }    }    req->deleteLater();}