'use strict';

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _toArray(arr) { return Array.isArray(arr) ? arr : Array.from(arr); }

function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var path = require('path');

exports.PscError = function (_Error) {
  _inherits(PscError, _Error);

  function PscError(message, modules) {
    _classCallCheck(this, PscError);

    var _this = _possibleConstructorReturn(this, (PscError.__proto__ || Object.getPrototypeOf(PscError)).call(this, message));

    _this.modules = modules;
    _this.isPscError = true;
    return _this;
  }

  _createClass(PscError, null, [{
    key: 'name',
    get: function get() {
      return 'PscError';
    }
  }]);

  return PscError;
}(Error);

var repeat = function repeat(value, times) {
  return times <= 0 ? [] : [value].concat(_toConsumableArray(repeat(value, times - 1)));
};
var diffPursModuleNames = function diffPursModuleNames(from, target, parts) {
  if (!from.length) return parts.concat(target);
  if (!target.length) return parts.concat(repeat('..', from.length));

  var _from = _toArray(from),
      head_from = _from[0],
      tail_from = _from.slice(1);

  var _target = _toArray(target),
      head_target = _target[0],
      tail_target = _target.slice(1);

  return head_from === head_target ? diffPursModuleNames(tail_from, tail_target, parts) : parts.concat(repeat('..', from.length), target);
};
exports.resolvePursModule = function (_ref) {
  var baseModulePath = _ref.baseModulePath,
      baseModuleName = _ref.baseModuleName,
      targetModuleName = _ref.targetModuleName;

  var parts = diffPursModuleNames(baseModuleName.split('.'), targetModuleName.split('.'), []);
  return parts.length ? path.resolve(baseModulePath, path.join.apply(path, _toConsumableArray(parts)) + '.purs') : baseModulePath;
};