93 lines
3.0 KiB
JavaScript
93 lines
3.0 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 = Deinflector.normalizeReasons(reasons);
|
|
}
|
|
|
|
deinflect(source) {
|
|
const results = [{
|
|
source,
|
|
term: source,
|
|
rules: 0,
|
|
definitions: [],
|
|
reasons: []
|
|
}];
|
|
for (let i = 0; i < results.length; ++i) {
|
|
const {rules, term, reasons} = results[i];
|
|
for (const [reason, variants] of this.reasons) {
|
|
for (const [kanaIn, kanaOut, rulesIn, rulesOut] of variants) {
|
|
if (
|
|
(rules !== 0 && (rules & rulesIn) === 0) ||
|
|
!term.endsWith(kanaIn) ||
|
|
(term.length - kanaIn.length + kanaOut.length) <= 0
|
|
) {
|
|
continue;
|
|
}
|
|
|
|
results.push({
|
|
source,
|
|
term: term.slice(0, -kanaIn.length) + kanaOut,
|
|
rules: rulesOut,
|
|
definitions: [],
|
|
reasons: [reason, ...reasons]
|
|
});
|
|
}
|
|
}
|
|
}
|
|
return results;
|
|
}
|
|
|
|
static normalizeReasons(reasons) {
|
|
const normalizedReasons = [];
|
|
for (const reason in reasons) {
|
|
const variants = [];
|
|
for (const {kanaIn, kanaOut, rulesIn, rulesOut} of reasons[reason]) {
|
|
variants.push([
|
|
kanaIn,
|
|
kanaOut,
|
|
Deinflector.rulesToRuleFlags(rulesIn),
|
|
Deinflector.rulesToRuleFlags(rulesOut)
|
|
]);
|
|
}
|
|
normalizedReasons.push([reason, variants]);
|
|
}
|
|
return normalizedReasons;
|
|
}
|
|
|
|
static rulesToRuleFlags(rules) {
|
|
const ruleTypes = Deinflector.ruleTypes;
|
|
let value = 0;
|
|
for (const rule of rules) {
|
|
value |= ruleTypes[rule];
|
|
}
|
|
return value;
|
|
}
|
|
}
|
|
|
|
Deinflector.ruleTypes = {
|
|
'v1': 0b0000001, // Verb ichidan
|
|
'v5': 0b0000010, // Verb godan
|
|
'vs': 0b0000100, // Verb suru
|
|
'vk': 0b0001000, // Verb kuru
|
|
'adj-i': 0b0010000, // Adjective i
|
|
'iru': 0b0100000, // Intermediate -iru endings for progressive or perfect tense
|
|
};
|