src/ll1/Parser.js

import compile from './compile.js';
import parse from './parse.js';

export default class Parser {
	constructor(grammar) {
		this.grammar = grammar;
		this._table = null;
	}

	// First ( rule ) {

	// }

	// follow ( rule ) {

	// }

	table() {
		if (this._table === null) this._table = compile(this.grammar.productions);
		return this._table;
	}

	parse(tape) {
		const table = this.table();
		return parse(
			this.grammar.root,
			this.grammar.start,
			this.grammar.eof,
			this.grammar.productions,
			table,
			tape,
		);
	}
}