prepack/lib/intrinsics/ecma262/SetPrototype.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 _index = require("../../values/index.js");

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

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

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

var _descriptors = require("../../descriptors.js");

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

/**
 * 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.
 */
function _default(realm, obj) {
  // ECMA262 23.2.3.1
  obj.defineNativeMethod("add", 1, (context, [value]) => {
    // 1. Let S be the this value.
    let S = context.throwIfNotConcrete(); // 2. If Type(S) is not Object, throw a TypeError exception.

    if (!(S instanceof _index.ObjectValue)) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
    } // 3. If S does not have a [[SetData]] internal slot, throw a TypeError exception.


    if (!S.$SetData) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
    } // 4. Let entries be the List that is the value of S's [[SetData]] internal slot.


    realm.recordModifiedProperty(S.$SetData_binding);
    let entries = S.$SetData;
    (0, _invariant.default)(entries !== undefined); // 5. Repeat for each e that is an element of entries,

    for (let e of entries) {
      // a. If e is not empty and SameValueZero(e, value) is true, then
      if (e && (0, _index2.SameValueZeroPartial)(realm, e, value)) {
        // i. Return S.
        return S;
      }
    } // 6. If value is -0, let value be +0.


    value = value.throwIfNotConcrete();

    if (value instanceof _index.NumberValue && Object.is(value.value, -0)) {
      value = realm.intrinsics.zero;
    } // 7. Append value as the last element of entries.


    entries.push(value); // 8. Return S.

    return S;
  }); // ECMA262 23.2.3.2

  obj.defineNativeMethod("clear", 0, context => {
    // 1. Let S be the this value.
    let S = context.throwIfNotConcrete(); // 2. If Type(S) is not Object, throw a TypeError exception.

    if (!(S instanceof _index.ObjectValue)) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
    } // 3. If S does not have a [[SetData]] internal slot, throw a TypeError exception.


    if (!S.$SetData) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
    } // All of these steps can be replace with just reseting [[SetData]]
    // 4. Let entries be the List that is the value of S's [[SetData]] internal slot.
    // 5. Repeat for each e that is an element of entries,
    // 5.a Replace the element of entries whose value is e with an element whose value is empty.


    realm.recordModifiedProperty(S.$SetData_binding);
    S.$SetData = []; // 6. Return undefined.

    return realm.intrinsics.undefined;
  }); // ECMA262 23.2.3.4

  obj.defineNativeMethod("delete", 1, (context, [value]) => {
    // 1. Let S be the this value.
    let S = context.throwIfNotConcrete(); // 2. If Type(S) is not Object, throw a TypeError exception.

    if (!(S instanceof _index.ObjectValue)) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
    } // 3. If S does not have a [[SetData]] internal slot, throw a TypeError exception.


    if (!S.$SetData) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
    } // 4. Let entries be the List that is the value of S's [[SetData]] internal slot.


    realm.recordModifiedProperty(S.$SetData_binding);
    let entries = S.$SetData;
    (0, _invariant.default)(entries !== undefined); // 5. Repeat for each e that is an element of entries,

    for (let i = 0; i < entries.length; i++) {
      let e = entries[i]; // a. If e is not empty and SameValueZero(e, value) is true, then

      if (e !== undefined && (0, _index2.SameValueZeroPartial)(realm, e, value)) {
        // i. Replace the element of entries whose value is e with an element whose value is empty.
        entries[i] = undefined; // ii. Return true.

        return realm.intrinsics.true;
      }
    } // 6. Return false.


    return realm.intrinsics.false;
  }); // ECMA262 23.2.3.5

  obj.defineNativeMethod("entries", 0, context => {
    // 1. Let S be the this value.
    let S = context; // 2. Return ? CreateSetIterator(S, "key+value").

    return (0, _index2.CreateSetIterator)(realm, S, "key+value");
  }); // ECMA262 23.2.3.6

  obj.defineNativeMethod("forEach", 1, (context, [callbackfn, thisArg]) => {
    // 1. Let S be the this value.
    let S = context.throwIfNotConcrete(); // 2. If Type(S) is not Object, throw a TypeError exception.

    if (!(S instanceof _index.ObjectValue)) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
    } // 3. If S does not have a [[SetData]] internal slot, throw a TypeError exception.


    if (!S.$SetData) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
    } // 4. If IsCallable(callbackfn) is false, throw a TypeError exception.


    if (!(0, _index2.IsCallable)(realm, callbackfn)) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
    } // 5. If thisArg was supplied, let T be thisArg; else let T be undefined.


    let T = thisArg || realm.intrinsics.undefined; // 6. Let entries be the List that is the value of S's [[SetData]] internal slot.

    let entries = S.$SetData;
    (0, _invariant.default)(entries); // 7. Repeat for each e that is an element of entries, in original insertion order

    for (let e of entries) {
      // a. If e is not empty, then
      if (e) {
        // i. Perform ? Call(callbackfn, T, « e, e, S »).
        (0, _index2.Call)(realm, callbackfn, T, [e, e, S]);
      }
    } // 8. Return undefined.


    return realm.intrinsics.undefined;
  }); // ECMA262 23.2.3.7

  obj.defineNativeMethod("has", 1, (context, [value]) => {
    // 1. Let S be the this value.
    let S = context.throwIfNotConcrete(); // 2. If Type(S) is not Object, throw a TypeError exception.

    if (!(S instanceof _index.ObjectValue)) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
    } // 3. If S does not have a [[SetData]] internal slot, throw a TypeError exception.


    if (!S.$SetData) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
    } // 4. Let entries be the List that is the value of S's [[SetData]] internal slot.


    let entries = S.$SetData; // 5. Repeat for each e that is an element of entries,

    for (let e of entries) {
      // a. If e is not empty and SameValueZero(e, value) is true, return true.
      if (e && (0, _index2.SameValueZeroPartial)(realm, e, value)) return realm.intrinsics.true;
    } // 6. Return false.


    return realm.intrinsics.false;
  }); // ECMA262 23.2.3.9 get Set.prototype.size

  obj.$DefineOwnProperty("size", new _descriptors.PropertyDescriptor({
    get: new _index.NativeFunctionValue(realm, undefined, "get size", 0, context => {
      // 1. Let S be the this value.
      let S = context.throwIfNotConcrete(); // 2. If Type(S) is not Object, throw a TypeError exception.

      if (!(S instanceof _index.ObjectValue)) {
        throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
      } // 3. If S does not have a [[SetData]] internal slot, throw a TypeError exception.


      if (!S.$SetData) {
        throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError);
      } // 4. Let entries be the List that is the value of S's [[SetData]] internal slot.


      let entries = S.$SetData; // 5. Let count be 0.

      let count = 0; // 6. For each e that is an element of entries

      for (let e of entries) {
        // a. If e is not empty, set count to count+1.
        if (e) count++;
      } // 7. Return count.


      return new _index.NumberValue(realm, count);
    }),
    configurable: true
  })); // ECMA262 23.2.3.10

  obj.defineNativeMethod("values", 0, context => {
    // 1. Let S be the this value.
    let S = context; // 2. Return ? CreateSetIterator(S, "value").

    return (0, _index2.CreateSetIterator)(realm, S, "value");
  }); // ECMA262 23.2.3.8

  let valuesPropertyDescriptor = obj.$GetOwnProperty("values");
  (0, _invariant.default)(valuesPropertyDescriptor instanceof _descriptors.PropertyDescriptor);

  _singletons.Properties.ThrowIfMightHaveBeenDeleted(valuesPropertyDescriptor);

  obj.$DefineOwnProperty("keys", valuesPropertyDescriptor); // ECMA262 23.2.3.11

  obj.$DefineOwnProperty(realm.intrinsics.SymbolIterator, valuesPropertyDescriptor); // ECMA262 23.2.3.12 Set.prototype [ @@toStringTag ]

  obj.defineNativeProperty(realm.intrinsics.SymbolToStringTag, new _index.StringValue(realm, "Set"), {
    writable: false
  });
}
//# sourceMappingURL=SetPrototype.js.map