yomichan/ext/bg/js/deinflector.js
2019-09-28 22:05:10 -04:00

70 lines
2.2 KiB
JavaScript

/*
* Copyright (C) 2016-2017 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 Deinflector {
constructor(reasons) {
this.reasons = reasons;
}
deinflect(source) {
const results = [{
source,
term: source,
rules: [],
definitions: [],
reasons: []
}];
for (let i = 0; i < results.length; ++i) {
const entry = results[i];
for (const reason in this.reasons) {
for (const variant of this.reasons[reason]) {
let accept = entry.rules.length === 0;
if (!accept) {
for (const rule of entry.rules) {
if (variant.rulesIn.includes(rule)) {
accept = true;
break;
}
}
}
if (!accept || !entry.term.endsWith(variant.kanaIn)) {
continue;
}
const term = entry.term.slice(0, -variant.kanaIn.length) + variant.kanaOut;
if (term.length === 0) {
continue;
}
results.push({
source,
term,
rules: variant.rulesOut,
definitions: [],
reasons: [reason, ...entry.reasons]
});
}
}
}
return results;
}
}