ParserCollection.ts

import { Pattern } from './Pattern';
import { Card } from './card';

// 解析器集合
export class ParserCollection implements PatternParser {
	private parsers: PatternParser[];
	private static instance: ParserCollection;
	private constructor() {
		this.parsers = [];
	}
	public Parse(card: Card): Pattern[] {
		if (this.parsers.length == 0) {
			throw new Error('No parsers implemented.');
		}
		let tmpResults: Pattern[] = [];
		for (let parser of this.parsers) {
			let results = parser.Parse(card);
			tmpResults.push(...results);
		}
		return tmpResults;
	}
	public static getInstance(): ParserCollection {
		if (!ParserCollection.instance) {
			ParserCollection.instance = new ParserCollection();
		}

		return ParserCollection.instance;
	}
	public registerParser(parser: PatternParser): void {
		this.parsers.push(parser);
	}

	public clean() {
		this.parsers = []
	}
}
// 卡片解析器 将卡片解析成为视图
// 卡片解析器负责解析卡片

export interface PatternParser {
	Parse(card: Card): Pattern[];
}