'use strict';

module.exports = function(body, options = {}) {
	let expressionParser, parserOptions;

	if (options.tracer != null) {
		const pegjs = require("pegjs");
		const fs = require("fs");
		const path = require("path");

		let grammar = fs.readFileSync(path.join(__dirname, "../src/expression.pegjs"), {encoding: "utf8"});

		expressionParser = pegjs.generate(grammar, {
			trace: true,
			format: "commonjs",
			dependencies: {
				"reorderOperatorExpressions": path.join(__dirname, "./reorder-operator-expressions")
			}
		});

		parserOptions = {
			tracer: options.tracer
		};
	} else {
		expressionParser = require("./expression");

		parserOptions = {};
	}

	return expressionParser.parse(body, parserOptions);
}