"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }(); /**
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          * Copyright (c) 2017-present, Facebook, Inc.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          * All rights reserved.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          *
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          * This source code is licensed under the BSD-style license found in the
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          * LICENSE file in the root directory of this source tree. An additional grant
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          * of patent rights can be found in the PATENTS file in the same directory.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          */

exports.default = function (realm) {
  return build("Error", realm, false);
};

exports.describeLocation = describeLocation;
exports.build = build;

var _index = require("../../values/index.js");

var _index2 = require("../../methods/index.js");

var _singletons = require("../../singletons.js");

var _invariant = require("../../invariant.js");

var _invariant2 = _interopRequireDefault(_invariant);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function describeLocation(realm, callerFn, env, loc) {
  var locString = "";
  var displayName = "";

  if (callerFn) {
    if (callerFn instanceof _index.NativeFunctionValue) {
      locString = "native";
    }

    var name = callerFn.$Get("name", callerFn);
    if (!name.mightBeUndefined()) displayName = _singletons.To.ToStringPartial(realm, name);else name.throwIfNotConcrete();

    if (env && env.$NewTarget) displayName = "new " + displayName;
  }

  if (!locString) {
    if (loc) {
      locString = loc.start.line + ":" + (loc.start.column + 1);
      if (loc.source) locString = loc.source + ":" + locString;
    } else {
      locString = (loc ? loc.source : undefined) || "unknown";
      if (!displayName) return undefined;
    }
  }

  if (displayName) {
    return "at " + displayName + " (" + locString + ")";
  } else {
    return "at " + locString;
  }
}

function buildStack(realm, context) {
  (0, _invariant2.default)(context.$ErrorData);

  var stack = context.$ErrorData.contextStack;
  if (!stack) return realm.intrinsics.undefined;

  var lines = [];
  var header = "";

  header += _singletons.To.ToStringPartial(realm, (0, _index2.Get)(realm, context, "name"));

  var msg = (0, _index2.Get)(realm, context, "message");
  if (!msg.mightBeUndefined()) {
    msg = _singletons.To.ToStringPartial(realm, msg);
    if (msg) header += ": " + msg;
  } else {
    msg.throwIfNotConcrete();
  }

  var _iteratorNormalCompletion = true;
  var _didIteratorError = false;
  var _iteratorError = undefined;

  try {
    for (var _iterator = stack.reverse()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
      var executionContext = _step.value;

      var caller = executionContext.caller;
      var locString = describeLocation(realm, caller ? caller.function : undefined, caller ? caller.lexicalEnvironment : undefined, executionContext.loc);
      if (locString !== undefined) lines.push(locString);
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator.return) {
        _iterator.return();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }

  return new _index.StringValue(realm, header + "\n    " + lines.join("\n    "));
}

function build(name, realm) {
  var inheritError = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;

  var func = new _index.NativeFunctionValue(realm, name, name, 1, function (context, _ref, argLength, NewTarget) {
    var _ref2 = _slicedToArray(_ref, 1),
        message = _ref2[0];

    // 1. If NewTarget is undefined, let newTarget be the active function object, else let newTarget be NewTarget.
    var newTarget = NewTarget || func;

    // 2. Let O be ? OrdinaryCreateFromConstructor(newTarget, "%ErrorPrototype%", « [[ErrorData]] »).
    var O = _singletons.Create.OrdinaryCreateFromConstructor(realm, newTarget, name + "Prototype", { $ErrorData: undefined });
    O.$ErrorData = {
      contextStack: realm.contextStack.slice(1),
      locationData: undefined
    };

    // Build a text description of the stack.
    var stackDesc = {
      value: buildStack(realm, O),
      enumerable: false,
      configurable: true,
      writable: true
    };
    _singletons.Properties.DefinePropertyOrThrow(realm, O, "stack", stackDesc);

    // 3. If message is not undefined, then
    if (!message.mightBeUndefined()) {
      // a. Let msg be ? ToString(message).
      var msg = message.getType() === _index.StringValue ? message : _singletons.To.ToStringValue(realm, message);

      // b. Let msgDesc be the PropertyDescriptor{[[Value]]: msg, [[Writable]]: true, [[Enumerable]]: false, [[Configurable]]: true}.
      var msgDesc = {
        value: msg,
        writable: true,
        enumerable: false,
        configurable: true
      };

      // c. Perform ! DefinePropertyOrThrow(O, "message", msgDesc).
      _singletons.Properties.DefinePropertyOrThrow(realm, O, "message", msgDesc);
    } else {
      message.throwIfNotConcrete();
    }

    // 4. Return O.
    return O;
  });

  if (inheritError) {
    func.$Prototype = realm.intrinsics.Error;
  }

  return func;
}
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