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<!doctype html>
<head><meta charset="utf-8">
<link rel="stylesheet" href="./spec.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.4/styles/github.min.css">
<script src="./spec.js"></script>
<title>Object iteration (alternate spec text)</title><script type="application/json" id="menu-search-biblio">[{"type":"clause","id":"Object_iterateKeys","aoid":null,"title":"Object.iterateKeys( O )","titleHTML":"Object.iterateKeys( O )","number":"1","namespace":"<no location>","location":"","referencingIds":[],"key":"Object.iterateKeys( O )"},{"type":"clause","id":"Object_iterateValues","aoid":null,"title":"Object.iterateValues( O )","titleHTML":"Object.iterateValues( O )","number":"2","namespace":"<no location>","location":"","referencingIds":[],"key":"Object.iterateValues( O )"},{"type":"clause","id":"Object_iterateEntries","aoid":null,"title":"Object.iterateEntries( O )","titleHTML":"Object.iterateEntries( O )","number":"3","namespace":"<no location>","location":"","referencingIds":[],"key":"Object.iterateEntries( O )"},{"type":"op","aoid":"CreateObjectIterator","refId":"sec-createobjectiterator","location":"","referencingIds":[],"key":"CreateObjectIterator"},{"type":"clause","id":"sec-createobjectiterator","aoid":"CreateObjectIterator","title":"CreateObjectIterator ( obj, kind )","titleHTML":"CreateObjectIterator ( <var>obj</var>, <var>kind</var> )","number":"4.1","namespace":"<no location>","location":"","referencingIds":["_ref_3","_ref_5","_ref_7"],"key":"CreateObjectIterator ( obj, kind )"},{"type":"term","term":"%ObjectIteratorPrototype%","refId":"sec-%objectiteratorprototype%-object","referencingIds":[],"namespace":"<no location>","location":"","key":"%ObjectIteratorPrototype%"},{"type":"clause","id":"sec-%objectiteratorprototype%.next","aoid":null,"title":"%ObjectIteratorPrototype%.next ( )","titleHTML":"%ObjectIteratorPrototype%.next ( )","number":"4.2.1","namespace":"<no location>","location":"","referencingIds":[],"key":"%ObjectIteratorPrototype%.next ( )"},{"type":"clause","id":"sec-%objectiteratorprototype%-@@tostringtag","aoid":null,"title":"%ObjectIteratorPrototype% [ @@toStringTag ]","titleHTML":"%ObjectIteratorPrototype% [ @@toStringTag ]","number":"4.2.2","namespace":"<no location>","location":"","referencingIds":[],"key":"%ObjectIteratorPrototype% [ @@toStringTag ]"},{"type":"clause","id":"sec-%objectiteratorprototype%-object","aoid":null,"title":"The %ObjectIteratorPrototype% Object","titleHTML":"The %ObjectIteratorPrototype% Object","number":"4.2","namespace":"<no location>","location":"","referencingIds":["_ref_9","_ref_15"],"key":"The %ObjectIteratorPrototype% Object"},{"type":"table","id":"table-object-iterator-slots","number":1,"caption":"Table 1: Internal Slots of Object Iterator Instances","referencingIds":["_ref_1"],"namespace":"<no location>","location":"","key":"Table 1: Internal Slots of Object Iterator Instances"},{"type":"clause","id":"sec-properties-of-object-iterator-instances","aoid":null,"title":"Properties of Object Iterator Instances","titleHTML":"Properties of Object Iterator Instances","number":"4.3","namespace":"<no location>","location":"","referencingIds":["_ref_0"],"key":"Properties of Object Iterator Instances"},{"type":"clause","id":"sec-object-iterator-objects","aoid":null,"title":"Object Iterator Objects","titleHTML":"Object Iterator Objects","number":"4","namespace":"<no location>","location":"","referencingIds":[],"key":"Object Iterator Objects"},{"type":"clause","id":"sec-copyright-and-software-license","aoid":null,"title":"Copyright & Software License","titleHTML":"Copyright & Software License","number":"A","namespace":"<no location>","location":"","referencingIds":[],"key":"Copyright & Software License"}]</script><script>"use strict";
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if (!pinsString) return;
var pins = JSON.parse(pinsString);
for(var i = 0; i < pins.length; i++) {
this.addPinEntry(pins[i]);
}
}
Menu.prototype.togglePinEntry = function (id) {
if (!id) {
id = this.$activeClause[this.$activeClause.length - 1].id;
}
if (this._pinnedIds[id]) {
this.removePinEntry(id);
} else {
this.addPinEntry(id);
}
}
Menu.prototype.selectPin = function (num) {
document.location = this.$pinList.children[num].children[0].href;
}
var menu;
function init() {
menu = new Menu();
var $container = document.getElementById('spec-container');
$container.addEventListener('mouseover', debounce(function (e) {
Toolbox.activateIfMouseOver(e);
}));
}
document.addEventListener('DOMContentLoaded', init);
function debounce(fn, opts) {
opts = opts || {};
var timeout;
return function(e) {
if (opts.stopPropagation) {
e.stopPropagation();
}
var args = arguments;
if (timeout) {
clearTimeout(timeout);
}
timeout = setTimeout(function() {
timeout = null;
fn.apply(this, args);
}.bind(this), 150);
}
}
var CLAUSE_NODES = ['EMU-CLAUSE', 'EMU-INTRO', 'EMU-ANNEX'];
function findLocalReferences ($elem) {
var name = $elem.innerHTML;
var references = [];
var parentClause = $elem.parentNode;
while (parentClause && CLAUSE_NODES.indexOf(parentClause.nodeName) === -1) {
parentClause = parentClause.parentNode;
}
if(!parentClause) return;
var vars = parentClause.querySelectorAll('var');
for (var i = 0; i < vars.length; i++) {
var $var = vars[i];
if ($var.innerHTML === name) {
references.push($var);
}
}
return references;
}
function toggleFindLocalReferences($elem) {
var references = findLocalReferences($elem);
if ($elem.classList.contains('referenced')) {
references.forEach(function ($reference) {
$reference.classList.remove('referenced');
});
} else {
references.forEach(function ($reference) {
$reference.classList.add('referenced');
});
}
}
function installFindLocalReferences () {
document.addEventListener('click', function (e) {
if (e.target.nodeName === 'VAR') {
toggleFindLocalReferences(e.target);
}
});
}
document.addEventListener('DOMContentLoaded', installFindLocalReferences);
// The following license applies to the fuzzysearch function
// The MIT License (MIT)
// Copyright © 2015 Nicolas Bevacqua
// Copyright © 2016 Brian Terlson
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
function fuzzysearch (searchString, haystack, caseInsensitive) {
var tlen = haystack.length;
var qlen = searchString.length;
var chunks = 1;
var finding = false;
var prefix = true;
if (qlen > tlen) {
return false;
}
if (qlen === tlen) {
if (searchString === haystack) {
return { caseMatch: true, chunks: 1, prefix: true };
} else if (searchString.toLowerCase() === haystack.toLowerCase()) {
return { caseMatch: false, chunks: 1, prefix: true };
} else {
return false;
}
}
outer: for (var i = 0, j = 0; i < qlen; i++) {
var nch = searchString[i];
while (j < tlen) {
var targetChar = haystack[j++];
if (targetChar === nch) {
finding = true;
continue outer;
}
if (finding) {
chunks++;
finding = false;
}
}
if (caseInsensitive) { return false }
return fuzzysearch(searchString.toLowerCase(), haystack.toLowerCase(), true);
}
return { caseMatch: !caseInsensitive, chunks: chunks, prefix: j <= qlen };
}
var Toolbox = {
init: function () {
this.$container = document.createElement('div');
this.$container.classList.add('toolbox');
this.$permalink = document.createElement('a');
this.$permalink.textContent = 'Permalink';
this.$pinLink = document.createElement('a');
this.$pinLink.textContent = 'Pin';
this.$pinLink.setAttribute('href', '#');
this.$pinLink.addEventListener('click', function (e) {
e.preventDefault();
e.stopPropagation();
menu.togglePinEntry(this.entry.id);
}.bind(this));
this.$refsLink = document.createElement('a');
this.$refsLink.setAttribute('href', '#');
this.$refsLink.addEventListener('click', function (e) {
e.preventDefault();
e.stopPropagation();
referencePane.showReferencesFor(this.entry);
}.bind(this));
this.$container.appendChild(this.$permalink);
this.$container.appendChild(this.$pinLink);
this.$container.appendChild(this.$refsLink);
document.body.appendChild(this.$container);
},
activate: function (el, entry, target) {
if (el === this._activeEl) return;
this.active = true;
this.entry = entry;
this.$container.classList.add('active');
this.top = el.offsetTop - this.$container.offsetHeight - 10;
this.left = el.offsetLeft;
this.$container.setAttribute('style', 'left: ' + this.left + 'px; top: ' + this.top + 'px');
this.updatePermalink();
this.updateReferences();
this._activeEl = el;
if (this.top < document.body.scrollTop && el === target) {
// don't scroll unless it's a small thing (< 200px)
this.$container.scrollIntoView();
}
},
updatePermalink: function () {
this.$permalink.setAttribute('href', '#' + this.entry.id);
},
updateReferences: function () {
this.$refsLink.textContent = 'References (' + this.entry.referencingIds.length + ')';
},
activateIfMouseOver: function (e) {
var ref = this.findReferenceUnder(e.target);
if (ref && (!this.active || e.pageY > this._activeEl.offsetTop)) {
var entry = menu.search.biblio.byId[ref.id];
this.activate(ref.element, entry, e.target);
} else if (this.active && ((e.pageY < this.top) || e.pageY > (this._activeEl.offsetTop + this._activeEl.offsetHeight))) {
this.deactivate();
}
},
findReferenceUnder: function (el) {
while (el) {
var parent = el.parentNode;
if (el.nodeName === 'H1' && parent.nodeName.match(/EMU-CLAUSE|EMU-ANNEX|EMU-INTRO/) && parent.id) {
return { element: el, id: parent.id };
} else if (el.nodeName.match(/EMU-(?!CLAUSE|XREF|ANNEX|INTRO)|DFN/) &&
el.id && el.id[0] !== '_') {
if (el.nodeName === 'EMU-FIGURE' || el.nodeName === 'EMU-TABLE' || el.nodeName === 'EMU-EXAMPLE') {
// return the figcaption element
return { element: el.children[0].children[0], id: el.id };
} else if (el.nodeName === 'EMU-PRODUCTION') {
// return the LHS non-terminal element
return { element: el.children[0], id: el.id };
} else {
return { element: el, id: el.id };
}
}
el = parent;
}
},
deactivate: function () {
this.$container.classList.remove('active');
this._activeEl = null;
this.activeElBounds = null;
this.active = false;
}
}
var referencePane = {
init: function() {
this.$container = document.createElement('div');
this.$container.setAttribute('id', 'references-pane-container');
var $spacer = document.createElement('div');
$spacer.setAttribute('id', 'references-pane-spacer');
this.$pane = document.createElement('div');
this.$pane.setAttribute('id', 'references-pane');
this.$container.appendChild($spacer);
this.$container.appendChild(this.$pane);
this.$header = document.createElement('div');
this.$header.classList.add('menu-pane-header');
this.$header.textContent = 'References to ';
this.$headerRefId = document.createElement('a');
this.$header.appendChild(this.$headerRefId);
this.$closeButton = document.createElement('span');
this.$closeButton.setAttribute('id', 'references-pane-close');
this.$closeButton.addEventListener('click', function (e) {
this.deactivate();
}.bind(this));
this.$header.appendChild(this.$closeButton);
this.$pane.appendChild(this.$header);
var tableContainer = document.createElement('div');
tableContainer.setAttribute('id', 'references-pane-table-container');
this.$table = document.createElement('table');
this.$table.setAttribute('id', 'references-pane-table');
this.$tableBody = this.$table.createTBody();
tableContainer.appendChild(this.$table);
this.$pane.appendChild(tableContainer);
menu.$specContainer.appendChild(this.$container);
},
activate: function () {
this.$container.classList.add('active');
},
deactivate: function () {
this.$container.classList.remove('active');
},
showReferencesFor(entry) {
this.activate();
var newBody = document.createElement('tbody');
var previousId;
var previousCell;
var dupCount = 0;
this.$headerRefId.textContent = '#' + entry.id;
this.$headerRefId.setAttribute('href', '#' + entry.id);
entry.referencingIds.map(function (id) {
var target = document.getElementById(id);
var cid = findParentClauseId(target);
var clause = menu.search.biblio.byId[cid];
var dupCount = 0;
return { id: id, clause: clause }
}).sort(function (a, b) {
return sortByClauseNumber(a.clause, b.clause);
}).forEach(function (record, i) {
if (previousId === record.clause.id) {
previousCell.innerHTML += ' (<a href="#' + record.id + '">' + (dupCount + 2) + '</a>)';
dupCount++;
} else {
var row = newBody.insertRow();
var cell = row.insertCell();
cell.innerHTML = record.clause.number;
cell = row.insertCell();
cell.innerHTML = '<a href="#' + record.id + '">' + record.clause.titleHTML + '</a>';
previousCell = cell;
previousId = record.clause.id;
dupCount = 0;
}
}, this);
this.$table.removeChild(this.$tableBody);
this.$tableBody = newBody;
this.$table.appendChild(this.$tableBody);
}
}
function findParentClauseId(node) {
while (node && node.nodeName !== 'EMU-CLAUSE' && node.nodeName !== 'EMU-INTRO' && node.nodeName !== 'EMU-ANNEX') {
node = node.parentNode;
}
if (!node) return null;
return node.getAttribute('id');
}
function sortByClauseNumber(c1, c2) {
var c1c = c1.number.split('.');
var c2c = c2.number.split('.');
for (var i = 0; i < c1c.length; i++) {
if (i >= c2c.length) {
return 1;
}
var c1 = c1c[i];
var c2 = c2c[i];
var c1cn = Number(c1);
var c2cn = Number(c2);
if (Number.isNaN(c1cn) && Number.isNaN(c2cn)) {
if (c1 > c2) {
return 1;
} else if (c1 < c2) {
return -1;
}
} else if (!Number.isNaN(c1cn) && Number.isNaN(c2cn)) {
return -1;
} else if (Number.isNaN(c1cn) && !Number.isNaN(c2cn)) {
return 1;
} else if(c1cn > c2cn) {
return 1;
} else if (c1cn < c2cn) {
return -1;
}
}
if (c1c.length === c2c.length) {
return 0;
}
return -1;
}
document.addEventListener('DOMContentLoaded', function () {
Toolbox.init();
referencePane.init();
})
var CLAUSE_NODES = ['EMU-CLAUSE', 'EMU-INTRO', 'EMU-ANNEX'];
function findLocalReferences ($elem) {
var name = $elem.innerHTML;
var references = [];
var parentClause = $elem.parentNode;
while (parentClause && CLAUSE_NODES.indexOf(parentClause.nodeName) === -1) {
parentClause = parentClause.parentNode;
}
if(!parentClause) return;
var vars = parentClause.querySelectorAll('var');
for (var i = 0; i < vars.length; i++) {
var $var = vars[i];
if ($var.innerHTML === name) {
references.push($var);
}
}
return references;
}
function toggleFindLocalReferences($elem) {
var references = findLocalReferences($elem);
if ($elem.classList.contains('referenced')) {
references.forEach(function ($reference) {
$reference.classList.remove('referenced');
});
} else {
references.forEach(function ($reference) {
$reference.classList.add('referenced');
});
}
}
function installFindLocalReferences () {
document.addEventListener('click', function (e) {
if (e.target.nodeName === 'VAR') {
toggleFindLocalReferences(e.target);
}
});
}
document.addEventListener('DOMContentLoaded', installFindLocalReferences);
</script><style>body {
display: flex;
font-size: 18px;
line-height: 1.5;
font-family: Cambria, Palatino Linotype, Palatino, Liberation Serif, serif;
padding: 0;
margin: 0;
color: #111;
}
#spec-container {
padding: 0 20px;
flex-grow: 1;
flex-basis: 66%;
box-sizing: border-box;
overflow: hidden;
}
body.oldtoc {
margin: 0 auto;
}
a {
text-decoration: none;
color: #206ca7;
}
a:visited {
color: #206ca7;
}
a:hover {
text-decoration: underline;
color: #239dee;
}
code {
font-weight: bold;
font-family: Consolas, Monaco, monospace;
white-space: pre;
}
pre code {
font-weight: inherit;
}
pre code.hljs {
background-color: #fff;
margin: 0;
padding: 0;
}
ol.toc {
list-style: none;
padding-left: 0;
}
ol.toc ol.toc {
padding-left: 2ex;
list-style: none;
}
var {
color: #2aa198;
transition: background-color 0.25s ease;
cursor: pointer;
}
var.referenced {
background-color: #ffff33;
}
emu-const {
font-family: sans-serif;
}
emu-val {
font-weight: bold;
}
emu-alg ol, emu-alg ol ol ol ol {
list-style-type: decimal;
}
emu-alg ol ol, emu-alg ol ol ol ol ol {
list-style-type: lower-alpha;
}
emu-alg ol ol ol, ol ol ol ol ol ol {
list-style-type: lower-roman;
}
emu-eqn {
display: block;
margin-left: 4em;
}
emu-eqn.inline {
display: inline;
margin: 0;
}