prepack/lib/intrinsics/ecma262/GeneratorPrototype.js

Execute a JS bundle, serialize global state and side effects to a snapshot that can be quickly restored.

"use strict";

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

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

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

var _generator = require("../../methods/generator.js");

/**
 * 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.
 */

/*  strict-local */
function _default(realm, obj) {
  // ECMA262 25.3.1.2
  obj.defineNativeMethod("next", 1, (context, [value]) => {
    // 1. Let g be the this value.
    let g = context; // 2. Return ? GeneratorResume(g, value).

    return (0, _generator.GeneratorResume)(realm, g, value);
  }); // ECMA262 25.3.1.3

  obj.defineNativeMethod("return", 1, (context, [value]) => {
    // 1. Let g be the this value.
    let g = context; // 2. Let C be Completion{[[Type]]: return, [[Value]]: value, [[Target]]: empty}.

    let C = new _completions.ReturnCompletion(value, realm.currentLocation); // 3. Return ? GeneratorResumeAbrupt(g, C).

    return (0, _generator.GeneratorResumeAbrupt)(realm, g, C);
  }); // ECMA262 25.3.1.4

  obj.defineNativeMethod("throw", 1, (context, [exception]) => {
    // 1. Let g be the this value.
    let g = context; // 2. Let C be Completion{[[Type]]: throw, [[Value]]: exception, [[Target]]: empty}.

    let C = new _completions.ReturnCompletion(exception, realm.currentLocation); // 3. Return ? GeneratorResumeAbrupt(g, C).

    return (0, _generator.GeneratorResumeAbrupt)(realm, g, C);
  }); // ECMA262 25.3.1.5

  obj.defineNativeProperty(realm.intrinsics.SymbolToStringTag, new _index.StringValue(realm, "Generator"), {
    writable: false
  });
}
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