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/*
* Copyright (C) 2019 Alex Yatskov <alex@foosoft.net>
* Author: Alex Yatskov <alex@foosoft.net>
*
* 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, either version 3 of the License, or
* (at your option) any later version.
*
* 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/>.
*/
class Mecab {
constructor() {
this.listeners = {};
this.sequence = 0;
this.startListener();
}
async parseText(text) {
return await this.invoke('parse_text', {text});
}
startListener() {
this.port = chrome.runtime.connectNative('mecab');
this.port.onMessage.addListener((message) => {
const {sequence, data} = message;
const {callback, timer} = this.listeners[sequence] || {};
if (timer) {
clearTimeout(timer);
delete this.listeners[sequence];
callback(data);
}
});
}
invoke(action, params) {
return new Promise((resolve, reject) => {
const sequence = this.sequence++;
this.listeners[sequence] = {
callback: (data) => {
resolve(data);
},
timer: setTimeout(() => {
delete this.listeners[sequence];
reject(`Mecab invoke timed out in ${Mecab.timeout} ms`);
}, Mecab.timeout)
}
this.port.postMessage({action, params, sequence});
});
}
}
Mecab.timeout = 1000;
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