// Generated by CoffeeScript 1.7.1
(function() {
  var NumberT, PropertyDescriptor;

  NumberT = require('./Number').Number;

  exports.resolveLength = function(length, stream, parent) {
    var res;
    if (typeof length === 'number') {
      res = length;
    } else if (typeof length === 'function') {
      res = length.call(parent, parent);
    } else if (parent && typeof length === 'string') {
      res = parent[length];
    } else if (stream && length instanceof NumberT) {
      res = length.decode(stream);
    }
    if (isNaN(res)) {
      throw new Error('Not a fixed size');
    }
    return res;
  };

  PropertyDescriptor = (function() {
    function PropertyDescriptor(opts) {
      var key, val;
      if (opts == null) {
        opts = {};
      }
      this.enumerable = true;
      this.configurable = true;
      for (key in opts) {
        val = opts[key];
        this[key] = val;
      }
    }

    return PropertyDescriptor;

  })();

  exports.PropertyDescriptor = PropertyDescriptor;

}).call(this);