/* * Copyright (C) 2016 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 Deinflection { constructor(term, tags=[], rule='') { this.children = []; this.term = term; this.tags = tags; this.rule = rule; } validate(validator) { return validator(this.term).then(sets => { for (const tags of sets) { if (this.tags.length === 0) { return true; } for (const tag of this.tags) { if (tags.includes(tag)) { return true; } } } return false; }); } deinflect(validator, rules) { const promises = [ this.validate(validator).then(valid => { const child = new Deinflection(this.term, this.tags); this.children.push(child); }) ]; for (const rule in rules) { for (const variant of rules[rule]) { let allowed = this.tags.length === 0; for (const tag of this.tags) { if (variant.tagsIn.includes(tag)) { allowed = true; break; } } if (!allowed || !this.term.endsWith(variant.kanaIn)) { continue; } const term = this.term.slice(0, -variant.kanaIn.length) + variant.kanaOut; if (term.length === 0) { continue; } const child = new Deinflection(term, variant.tagsOut, rule); promises.push( child.deinflect(validator, rules).then(valid => { if (valid) { this.children.push(child); } } )); } } return Promise.all(promises).then(() => { return this.children.length > 0; }); } gather() { if (this.children.length === 0) { return [{root: this.term, tags: this.tags, rules: []}]; } const paths = []; for (const child of this.children) { for (const path of child.gather()) { if (this.rule.length > 0) { path.rules.push(this.rule); } path.source = this.term; paths.push(path); } } return paths; } } class Deinflector { constructor() { this.rules = {}; } setRules(rules) { this.rules = rules; } deinflect(term, validator) { const node = new Deinflection(term); return node.deinflect(validator, this.rules).then(success => success ? node.gather() : []); } }