yomichan/ext/bg/js/deinflector.js

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/*
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* Copyright (C) 2016-2017 Alex Yatskov <alex@foosoft.net>
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* 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/>.
*/
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class Deinflector {
constructor(reasons) {
this.reasons = reasons;
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}
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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;
}
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}
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}
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if (!accept || !entry.term.endsWith(variant.kanaIn)) {
continue;
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}
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const term = entry.term.slice(0, -variant.kanaIn.length) + variant.kanaOut;
if (term.length === 0) {
continue;
}
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results.push({
source,
term,
rules: variant.rulesOut,
definitions: [],
reasons: [reason, ...entry.reasons]
});
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}
}
}
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return results;
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}
}