"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.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          */

// ECMA262 13.2.13


exports.default = function (ast, strictCode, env, realm) {
  // 1. Let oldEnv be the running execution context's LexicalEnvironment.
  var oldEnv = realm.getRunningContext().lexicalEnvironment;

  // 2. Let blockEnv be NewDeclarativeEnvironment(oldEnv).
  var blockEnv = _singletons.Environment.NewDeclarativeEnvironment(realm, oldEnv);

  // 3. Perform BlockDeclarationInstantiation(StatementList, blockEnv).
  _singletons.Environment.BlockDeclarationInstantiation(realm, strictCode, ast.body, blockEnv);

  // 4. Set the running execution context's LexicalEnvironment to blockEnv.
  realm.getRunningContext().lexicalEnvironment = blockEnv;

  try {
    // 5. Let blockValue be the result of evaluating StatementList.
    var blockValue = void 0;

    if (ast.directives) {
      var _iteratorNormalCompletion = true;
      var _didIteratorError = false;
      var _iteratorError = undefined;

      try {
        for (var _iterator = ast.directives[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
          var directive = _step.value;

          blockValue = new _index.StringValue(realm, directive.value.value);
        }
      } catch (err) {
        _didIteratorError = true;
        _iteratorError = err;
      } finally {
        try {
          if (!_iteratorNormalCompletion && _iterator.return) {
            _iterator.return();
          }
        } finally {
          if (_didIteratorError) {
            throw _iteratorError;
          }
        }
      }
    }

    var _Functions$PartiallyE = _singletons.Functions.PartiallyEvaluateStatements(ast.body, blockValue, strictCode, blockEnv, realm),
        _Functions$PartiallyE2 = _slicedToArray(_Functions$PartiallyE, 2),
        res = _Functions$PartiallyE2[0],
        bAst = _Functions$PartiallyE2[1];

    (0, _invariant2.default)(bAst.length > 0 || res instanceof _index.EmptyValue);
    if (bAst.length === 0) return [res, t.emptyStatement(), []];
    var rAst = t.blockStatement(bAst, ast.directives);
    return [res, rAst, []];
  } finally {
    // 6. Set the running execution context's LexicalEnvironment to oldEnv.
    realm.getRunningContext().lexicalEnvironment = oldEnv;
    realm.onDestroyScope(blockEnv);
  }
};

var _completions = require("../completions.js");

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

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

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

var _invariant2 = _interopRequireDefault(_invariant);

var _babelTypes = require("babel-types");

var t = _interopRequireWildcard(_babelTypes);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
//# sourceMappingURL=BlockStatement.js.map