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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
(function(global, utils) {
"use strict";
%CheckIsBootstrapping();
// -------------------------------------------------------------------
// Imports
var GlobalMap = global.Map;
var GlobalSet = global.Set;
var iteratorSymbol = utils.ImportNow("iterator_symbol");
var MakeTypeError;
var MapIterator = utils.ImportNow("MapIterator");
var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol");
var SetIterator = utils.ImportNow("SetIterator");
utils.Import(function(from) {
MakeTypeError = from.MakeTypeError;
});
// -------------------------------------------------------------------
function SetIteratorConstructor(set, kind) {
%SetIteratorInitialize(this, set, kind);
}
function SetIteratorNextJS() {
if (!IS_SET_ITERATOR(this)) {
throw MakeTypeError(kIncompatibleMethodReceiver,
'Set Iterator.prototype.next', this);
}
var value_array = [UNDEFINED, UNDEFINED];
var result = %_CreateIterResultObject(value_array, false);
switch (%SetIteratorNext(this, value_array)) {
case 0:
result.value = UNDEFINED;
result.done = true;
break;
case ITERATOR_KIND_VALUES:
result.value = value_array[0];
break;
case ITERATOR_KIND_ENTRIES:
value_array[1] = value_array[0];
break;
}
return result;
}
function SetEntries() {
if (!IS_SET(this)) {
throw MakeTypeError(kIncompatibleMethodReceiver,
'Set.prototype.entries', this);
}
return new SetIterator(this, ITERATOR_KIND_ENTRIES);
}
function SetValues() {
if (!IS_SET(this)) {
throw MakeTypeError(kIncompatibleMethodReceiver,
'Set.prototype.values', this);
}
return new SetIterator(this, ITERATOR_KIND_VALUES);
}
// -------------------------------------------------------------------
%SetCode(SetIterator, SetIteratorConstructor);
%FunctionSetInstanceClassName(SetIterator, 'Set Iterator');
utils.InstallFunctions(SetIterator.prototype, DONT_ENUM, [
'next', SetIteratorNextJS
]);
%AddNamedProperty(SetIterator.prototype, toStringTagSymbol,
"Set Iterator", READ_ONLY | DONT_ENUM);
utils.InstallFunctions(GlobalSet.prototype, DONT_ENUM, [
'entries', SetEntries,
'keys', SetValues,
'values', SetValues
]);
%AddNamedProperty(GlobalSet.prototype, iteratorSymbol, SetValues, DONT_ENUM);
// -------------------------------------------------------------------
function MapIteratorConstructor(map, kind) {
%MapIteratorInitialize(this, map, kind);
}
function MapIteratorNextJS() {
if (!IS_MAP_ITERATOR(this)) {
throw MakeTypeError(kIncompatibleMethodReceiver,
'Map Iterator.prototype.next', this);
}
var value_array = [UNDEFINED, UNDEFINED];
var result = %_CreateIterResultObject(value_array, false);
switch (%MapIteratorNext(this, value_array)) {
case 0:
result.value = UNDEFINED;
result.done = true;
break;
case ITERATOR_KIND_KEYS:
result.value = value_array[0];
break;
case ITERATOR_KIND_VALUES:
result.value = value_array[1];
break;
// ITERATOR_KIND_ENTRIES does not need any processing.
}
return result;
}
function MapEntries() {
if (!IS_MAP(this)) {
throw MakeTypeError(kIncompatibleMethodReceiver,
'Map.prototype.entries', this);
}
return new MapIterator(this, ITERATOR_KIND_ENTRIES);
}
function MapKeys() {
if (!IS_MAP(this)) {
throw MakeTypeError(kIncompatibleMethodReceiver,
'Map.prototype.keys', this);
}
return new MapIterator(this, ITERATOR_KIND_KEYS);
}
function MapValues() {
if (!IS_MAP(this)) {
throw MakeTypeError(kIncompatibleMethodReceiver,
'Map.prototype.values', this);
}
return new MapIterator(this, ITERATOR_KIND_VALUES);
}
// -------------------------------------------------------------------
%SetCode(MapIterator, MapIteratorConstructor);
%FunctionSetInstanceClassName(MapIterator, 'Map Iterator');
utils.InstallFunctions(MapIterator.prototype, DONT_ENUM, [
'next', MapIteratorNextJS
]);
%AddNamedProperty(MapIterator.prototype, toStringTagSymbol,
"Map Iterator", READ_ONLY | DONT_ENUM);
utils.InstallFunctions(GlobalMap.prototype, DONT_ENUM, [
'entries', MapEntries,
'keys', MapKeys,
'values', MapValues
]);
%AddNamedProperty(GlobalMap.prototype, iteratorSymbol, MapEntries, DONT_ENUM);
// -------------------------------------------------------------------
// Exports
utils.Export(function(to) {
to.MapEntries = MapEntries;
to.MapIteratorNext = MapIteratorNextJS;
to.SetIteratorNext = SetIteratorNextJS;
to.SetValues = SetValues;
});
})
|
