Current File : //usr/share/gnome-shell/extensions/ding@rastersoft.com/app/promiseUtils.js
/* DING: Desktop Icons New Generation for GNOME Shell
*
* Copyright (C) 2022 Marco Trevisan <marco.trevisan@canonical.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
'use strict';
/* This is coming from gjs 1.72, adding options to allow not to replace the
* original method, in case we want to avoid clashes with already used async
* methods. This can be dropped when such requirements are not needed */
/**
*
* @param options
* @param proto
* @param asyncFunc
* @param finishFunc
*/
function _promisify(options, proto, asyncFunc,
finishFunc = `${asyncFunc.replace(/_(begin|async)$/, '')}_finish`) {
if (proto[asyncFunc] === undefined) {
throw new Error(`${proto} has no method named ${asyncFunc}`);
}
if (proto[finishFunc] === undefined) {
throw new Error(`${proto} has no method named ${finishFunc}`);
}
if (proto[`_original_${asyncFunc}`] !== undefined) {
if (options.keepOriginal && proto[`${asyncFunc}_promise`] === undefined) {
proto[`${asyncFunc}_promise`] = proto[asyncFunc];
}
return;
}
if (!options) {
options = {};
}
proto[`_original_${asyncFunc}`] = proto[asyncFunc];
proto[options.keepOriginal ? `${asyncFunc}_promise` : asyncFunc] = function (...args) {
if (!args.every(arg => typeof arg !== 'function')) {
return this[`_original_${asyncFunc}`](...args);
}
return new Promise((resolve, reject) => {
const callStack = new Error().stack.split('\n').filter(line => !line.match(/promisify/)).join('\n');
this[`_original_${asyncFunc}`](...args, (source, res) => {
try {
const result = source !== null && source[finishFunc] !== undefined
? source[finishFunc](res)
: proto[finishFunc](res);
if (Array.isArray(result) && result.length > 1 && result[0] === true) {
result.shift();
}
resolve(result);
} catch (error) {
if (error.stack) {
error.stack += `### Promise created here: ###\n${callStack}`;
} else {
error.stack = callStack;
}
reject(error);
}
});
});
};
if (!options.keepOriginal && proto[`${asyncFunc}_promise`] === undefined) {
proto[`${asyncFunc}_promise`] = proto[asyncFunc];
}
}
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