'use strict';

var GetIntrinsic = require('../GetIntrinsic');

var $TypeError = GetIntrinsic('%TypeError%');

var Type = require('./Type');
var IsDataDescriptor = require('./IsDataDescriptor');
var IsAccessorDescriptor = require('./IsAccessorDescriptor');

var assertRecord = require('../helpers/assertRecord');

// https://ecma-international.org/ecma-262/5.1/#sec-8.10.4

module.exports = function FromPropertyDescriptor(Desc) {
	if (typeof Desc === 'undefined') {
		return Desc;
	}

	assertRecord(Type, 'Property Descriptor', 'Desc', Desc);

	if (IsDataDescriptor(Desc)) {
		return {
			value: Desc['[[Value]]'],
			writable: !!Desc['[[Writable]]'],
			enumerable: !!Desc['[[Enumerable]]'],
			configurable: !!Desc['[[Configurable]]']
		};
	} else if (IsAccessorDescriptor(Desc)) {
		return {
			get: Desc['[[Get]]'],
			set: Desc['[[Set]]'],
			enumerable: !!Desc['[[Enumerable]]'],
			configurable: !!Desc['[[Configurable]]']
		};
	} else {
		throw new $TypeError('FromPropertyDescriptor must be called with a fully populated Property Descriptor');
	}
};