pub static JS: &'static [u8] = b"\"use strict\";\n\n// Fix back button cache problem\nwindow.onunload = function () { };\n\n// Global variable, shared between modules\nfunction playpen_text(playpen) {\n let code_block = playpen.querySelector(\"code\");\n\n if (window.ace && code_block.classList.contains(\"editable\")) {\n let editor = window.ace.edit(code_block);\n return editor.getValue();\n } else {\n return code_block.textContent;\n }\n}\n\n(function codeSnippets() {\n // Hide Rust code lines prepended with a specific character\n var hiding_character = \"#\";\n\n function fetch_with_timeout(url, options, timeout = 6000) {\n return Promise.race([\n fetch(url, options),\n new Promise((_, reject) => setTimeout(() => reject(new Error(\'timeout\')), timeout))\n ]);\n }\n\n var playpens = Array.from(document.querySelectorAll(\".playpen\"));\n if (playpens.length > 0) {\n fetch_with_timeout(\"https://play.rust-lang.org/meta/crates\", {\n headers: {\n \'Content-Type\': \"application/json\",\n },\n method: \'POST\',\n mode: \'cors\',\n })\n .then(response => response.json())\n .then(response => {\n // get list of crates available in the rust playground\n let playground_crates = response.crates.map(item => item[\"id\"]);\n playpens.forEach(block => handle_crate_list_update(block, playground_crates));\n });\n }\n\n function handle_crate_list_update(playpen_block, playground_crates) {\n // update the play buttons after receiving the response\n update_play_button(playpen_block, playground_crates);\n\n // and install on change listener to dynamically update ACE editors\n if (window.ace) {\n let code_block = playpen_block.querySelector(\"code\");\n if (code_block.classList.contains(\"editable\")) {\n let editor = window.ace.edit(code_block);\n editor.addEventListener(\"change\", function (e) {\n update_play_button(playpen_block, playground_crates);\n });\n }\n }\n }\n\n // updates the visibility of play button based on `no_run` class and\n // used crates vs ones available on http://play.rust-lang.org\n function update_play_button(pre_block, playground_crates) {\n var play_button = pre_block.querySelector(\".play-button\");\n\n // skip if code is `no_run`\n if (pre_block.querySelector(\'code\').classList.contains(\"no_run\")) {\n play_button.classList.add(\"hidden\");\n return;\n }\n\n // get list of `extern crate`\'s from snippet\n var txt = playpen_text(pre_block);\n var re = /extern\\s+crate\\s+([a-zA-Z_0-9]+)\\s*;/g;\n var snippet_crates = [];\n var item;\n while (item = re.exec(txt)) {\n snippet_crates.push(item[1]);\n }\n\n // check if all used crates are available on play.rust-lang.org\n var all_available = snippet_crates.every(function (elem) {\n return playground_crates.indexOf(elem) > -1;\n });\n\n if (all_available) {\n play_button.classList.remove(\"hidden\");\n } else {\n play_button.classList.add(\"hidden\");\n }\n }\n\n function run_rust_code(code_block) {\n var result_block = code_block.querySelector(\".result\");\n if (!result_block) {\n result_block = document.createElement(\'code\');\n result_block.className = \'result hljs language-bash\';\n\n code_block.append(result_block);\n }\n\n let text = playpen_text(code_block);\n\n var params = {\n version: \"stable\",\n optimize: \"0\",\n code: text\n };\n\n if (text.indexOf(\"#![feature\") !== -1) {\n params.version = \"nightly\";\n }\n\n result_block.innerText = \"Running...\";\n\n fetch_with_timeout(\"https://play.rust-lang.org/evaluate.json\", {\n headers: {\n \'Content-Type\': \"application/json\",\n },\n method: \'POST\',\n mode: \'cors\',\n body: JSON.stringify(params)\n })\n .then(response => response.json())\n .then(response => result_block.innerText = response.result)\n .catch(error => result_block.innerText = \"Playground Communication: \" + error.message);\n }\n\n // Syntax highlighting Configuration\n hljs.configure({\n tabReplace: \' \', // 4 spaces\n languages: [], // Languages used for auto-detection\n });\n\n if (window.ace) {\n // language-rust class needs to be removed for editable\n // blocks or highlightjs will capture events\n Array\n .from(document.querySelectorAll(\'code.editable\'))\n .forEach(function (block) { block.classList.remove(\'language-rust\'); });\n\n Array\n .from(document.querySelectorAll(\'code:not(.editable)\'))\n .forEach(function (block) { hljs.highlightBlock(block); });\n } else {\n Array\n .from(document.querySelectorAll(\'code\'))\n .forEach(function (block) { hljs.highlightBlock(block); });\n }\n\n // Adding the hljs class gives code blocks the color css\n // even if highlighting doesn\'t apply\n Array\n .from(document.querySelectorAll(\'code\'))\n .forEach(function (block) { block.classList.add(\'hljs\'); });\n\n Array.from(document.querySelectorAll(\"code.language-rust\")).forEach(function (block) {\n\n var code_block = block;\n var pre_block = block.parentNode;\n // hide lines\n var lines = code_block.innerHTML.split(\"\\n\");\n var first_non_hidden_line = false;\n var lines_hidden = false;\n var trimmed_line = \"\";\n\n for (var n = 0; n < lines.length; n++) {\n trimmed_line = lines[n].trim();\n if (trimmed_line[0] == hiding_character && trimmed_line[1] != hiding_character) {\n if (first_non_hidden_line) {\n lines[n] = \"<span class=\\\"hidden\\\">\" + \"\\n\" + lines[n].replace(/(\\s*)# ?/, \"$1\") + \"</span>\";\n }\n else {\n lines[n] = \"<span class=\\\"hidden\\\">\" + lines[n].replace(/(\\s*)# ?/, \"$1\") + \"\\n\" + \"</span>\";\n }\n lines_hidden = true;\n }\n else if (first_non_hidden_line) {\n lines[n] = \"\\n\" + lines[n];\n }\n else {\n first_non_hidden_line = true;\n }\n if (trimmed_line[0] == hiding_character && trimmed_line[1] == hiding_character) {\n lines[n] = lines[n].replace(\"##\", \"#\")\n }\n }\n code_block.innerHTML = lines.join(\"\");\n\n // If no lines were hidden, return\n if (!lines_hidden) { return; }\n\n var buttons = document.createElement(\'div\');\n buttons.className = \'buttons\';\n buttons.innerHTML = \"<button class=\\\"fa fa-expand\\\" title=\\\"Show hidden lines\\\" aria-label=\\\"Show hidden lines\\\"></button>\";\n\n // add expand button\n pre_block.insertBefore(buttons, pre_block.firstChild);\n\n pre_block.querySelector(\'.buttons\').addEventListener(\'click\', function (e) {\n if (e.target.classList.contains(\'fa-expand\')) {\n var lines = pre_block.querySelectorAll(\'span.hidden\');\n\n e.target.classList.remove(\'fa-expand\');\n e.target.classList.add(\'fa-compress\');\n e.target.title = \'Hide lines\';\n e.target.setAttribute(\'aria-label\', e.target.title);\n\n Array.from(lines).forEach(function (line) {\n line.classList.remove(\'hidden\');\n line.classList.add(\'unhidden\');\n });\n } else if (e.target.classList.contains(\'fa-compress\')) {\n var lines = pre_block.querySelectorAll(\'span.unhidden\');\n\n e.target.classList.remove(\'fa-compress\');\n e.target.classList.add(\'fa-expand\');\n e.target.title = \'Show hidden lines\';\n e.target.setAttribute(\'aria-label\', e.target.title);\n\n Array.from(lines).forEach(function (line) {\n line.classList.remove(\'unhidden\');\n line.classList.add(\'hidden\');\n });\n }\n });\n });\n\n Array.from(document.querySelectorAll(\'pre code\')).forEach(function (block) {\n var pre_block = block.parentNode;\n if (!pre_block.classList.contains(\'playpen\')) {\n var buttons = pre_block.querySelector(\".buttons\");\n if (!buttons) {\n buttons = document.createElement(\'div\');\n buttons.className = \'buttons\';\n pre_block.insertBefore(buttons, pre_block.firstChild);\n }\n\n var clipButton = document.createElement(\'button\');\n clipButton.className = \'fa fa-copy clip-button\';\n clipButton.title = \'Copy to clipboard\';\n clipButton.setAttribute(\'aria-label\', clipButton.title);\n clipButton.innerHTML = \'<i class=\\\"tooltiptext\\\"></i>\';\n\n buttons.insertBefore(clipButton, buttons.firstChild);\n }\n });\n\n // Process playpen code blocks\n Array.from(document.querySelectorAll(\".playpen\")).forEach(function (pre_block) {\n // Add play button\n var buttons = pre_block.querySelector(\".buttons\");\n if (!buttons) {\n buttons = document.createElement(\'div\');\n buttons.className = \'buttons\';\n pre_block.insertBefore(buttons, pre_block.firstChild);\n }\n\n var runCodeButton = document.createElement(\'button\');\n runCodeButton.className = \'fa fa-play play-button\';\n runCodeButton.hidden = true;\n runCodeButton.title = \'Run this code\';\n runCodeButton.setAttribute(\'aria-label\', runCodeButton.title);\n\n var copyCodeClipboardButton = document.createElement(\'button\');\n copyCodeClipboardButton.className = \'fa fa-copy clip-button\';\n copyCodeClipboardButton.innerHTML = \'<i class=\"tooltiptext\"></i>\';\n copyCodeClipboardButton.title = \'Copy to clipboard\';\n copyCodeClipboardButton.setAttribute(\'aria-label\', copyCodeClipboardButton.title);\n\n buttons.insertBefore(runCodeButton, buttons.firstChild);\n buttons.insertBefore(copyCodeClipboardButton, buttons.firstChild);\n\n runCodeButton.addEventListener(\'click\', function (e) {\n run_rust_code(pre_block);\n });\n\n let code_block = pre_block.querySelector(\"code\");\n if (window.ace && code_block.classList.contains(\"editable\")) {\n var undoChangesButton = document.createElement(\'button\');\n undoChangesButton.className = \'fa fa-history reset-button\';\n undoChangesButton.title = \'Undo changes\';\n undoChangesButton.setAttribute(\'aria-label\', undoChangesButton.title);\n\n buttons.insertBefore(undoChangesButton, buttons.firstChild);\n\n undoChangesButton.addEventListener(\'click\', function () {\n let editor = window.ace.edit(code_block);\n editor.setValue(editor.originalCode);\n editor.clearSelection();\n });\n }\n });\n})();\n\n(function themes() {\n var html = document.querySelector(\'html\');\n var themeToggleButton = document.getElementById(\'theme-toggle\');\n var themePopup = document.getElementById(\'theme-list\');\n var themeColorMetaTag = document.querySelector(\'meta[name=\"theme-color\"]\');\n var stylesheets = {\n ayuHighlight: document.querySelector(\"[href$=\'ayu-highlight.css\']\"),\n tomorrowNight: document.querySelector(\"[href$=\'tomorrow-night.css\']\"),\n highlight: document.querySelector(\"[href$=\'highlight.css\']\"),\n };\n\n function showThemes() {\n themePopup.style.display = \'block\';\n themeToggleButton.setAttribute(\'aria-expanded\', true);\n themePopup.querySelector(\"button#\" + document.body.className).focus();\n }\n\n function hideThemes() {\n themePopup.style.display = \'none\';\n themeToggleButton.setAttribute(\'aria-expanded\', false);\n themeToggleButton.focus();\n }\n\n function set_theme(theme) {\n let ace_theme;\n\n if (theme == \'coal\' || theme == \'navy\') {\n stylesheets.ayuHighlight.disabled = true;\n stylesheets.tomorrowNight.disabled = false;\n stylesheets.highlight.disabled = true;\n\n ace_theme = \"ace/theme/tomorrow_night\";\n } else if (theme == \'ayu\') {\n stylesheets.ayuHighlight.disabled = false;\n stylesheets.tomorrowNight.disabled = true;\n stylesheets.highlight.disabled = true;\n\n ace_theme = \"ace/theme/tomorrow_night\";\n } else {\n stylesheets.ayuHighlight.disabled = true;\n stylesheets.tomorrowNight.disabled = true;\n stylesheets.highlight.disabled = false;\n\n ace_theme = \"ace/theme/dawn\";\n }\n\n setTimeout(function () {\n themeColorMetaTag.content = getComputedStyle(document.body).backgroundColor;\n }, 1);\n\n if (window.ace && window.editors) {\n window.editors.forEach(function (editor) {\n editor.setTheme(ace_theme);\n });\n }\n\n var previousTheme;\n try { previousTheme = localStorage.getItem(\'mdbook-theme\'); } catch (e) { }\n if (previousTheme === null || previousTheme === undefined) { previousTheme = \'light\'; }\n\n try { localStorage.setItem(\'mdbook-theme\', theme); } catch (e) { }\n\n document.body.className = theme;\n html.classList.remove(previousTheme);\n html.classList.add(theme);\n }\n\n // Set theme\n var theme;\n try { theme = localStorage.getItem(\'mdbook-theme\'); } catch(e) { }\n if (theme === null || theme === undefined) { theme = \'light\'; }\n\n set_theme(theme);\n\n themeToggleButton.addEventListener(\'click\', function () {\n if (themePopup.style.display === \'block\') {\n hideThemes();\n } else {\n showThemes();\n }\n });\n\n themePopup.addEventListener(\'click\', function (e) {\n var theme = e.target.id || e.target.parentElement.id;\n set_theme(theme);\n });\n\n themePopup.addEventListener(\'focusout\', function(e) {\n // e.relatedTarget is null in Safari and Firefox on macOS (see workaround below)\n if (!!e.relatedTarget && !themeToggleButton.contains(e.relatedTarget) && !themePopup.contains(e.relatedTarget)) {\n hideThemes();\n }\n });\n\n // Should not be needed, but it works around an issue on macOS & iOS: https://github.com/rust-lang-nursery/mdBook/issues/628\n document.addEventListener(\'click\', function(e) {\n if (themePopup.style.display === \'block\' && !themeToggleButton.contains(e.target) && !themePopup.contains(e.target)) {\n hideThemes();\n }\n });\n\n document.addEventListener(\'keydown\', function (e) {\n if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) { return; }\n if (!themePopup.contains(e.target)) { return; }\n\n switch (e.key) {\n case \'Escape\':\n e.preventDefault();\n hideThemes();\n break;\n case \'ArrowUp\':\n e.preventDefault();\n var li = document.activeElement.parentElement;\n if (li && li.previousElementSibling) {\n li.previousElementSibling.querySelector(\'button\').focus();\n }\n break;\n case \'ArrowDown\':\n e.preventDefault();\n var li = document.activeElement.parentElement;\n if (li && li.nextElementSibling) {\n li.nextElementSibling.querySelector(\'button\').focus();\n }\n break;\n case \'Home\':\n e.preventDefault();\n themePopup.querySelector(\'li:first-child button\').focus();\n break;\n case \'End\':\n e.preventDefault();\n themePopup.querySelector(\'li:last-child button\').focus();\n break;\n }\n });\n})();\n\n(function sidebar() {\n var html = document.querySelector(\"html\");\n var sidebar = document.getElementById(\"sidebar\");\n var sidebarLinks = document.querySelectorAll(\'#sidebar a\');\n var sidebarToggleButton = document.getElementById(\"sidebar-toggle\");\n var firstContact = null;\n\n function showSidebar() {\n html.classList.remove(\'sidebar-hidden\')\n html.classList.add(\'sidebar-visible\');\n Array.from(sidebarLinks).forEach(function (link) {\n link.setAttribute(\'tabIndex\', 0);\n });\n sidebarToggleButton.setAttribute(\'aria-expanded\', true);\n sidebar.setAttribute(\'aria-hidden\', false);\n try { localStorage.setItem(\'mdbook-sidebar\', \'visible\'); } catch (e) { }\n }\n\n function hideSidebar() {\n html.classList.remove(\'sidebar-visible\')\n html.classList.add(\'sidebar-hidden\');\n Array.from(sidebarLinks).forEach(function (link) {\n link.setAttribute(\'tabIndex\', -1);\n });\n sidebarToggleButton.setAttribute(\'aria-expanded\', false);\n sidebar.setAttribute(\'aria-hidden\', true);\n try { localStorage.setItem(\'mdbook-sidebar\', \'hidden\'); } catch (e) { }\n }\n\n // Toggle sidebar\n sidebarToggleButton.addEventListener(\'click\', function sidebarToggle() {\n if (html.classList.contains(\"sidebar-hidden\")) {\n showSidebar();\n } else if (html.classList.contains(\"sidebar-visible\")) {\n hideSidebar();\n } else {\n if (getComputedStyle(sidebar)[\'transform\'] === \'none\') {\n hideSidebar();\n } else {\n showSidebar();\n }\n }\n });\n\n document.addEventListener(\'touchstart\', function (e) {\n firstContact = {\n x: e.touches[0].clientX,\n time: Date.now()\n };\n }, { passive: true });\n\n document.addEventListener(\'touchmove\', function (e) {\n if (!firstContact)\n return;\n\n var curX = e.touches[0].clientX;\n var xDiff = curX - firstContact.x,\n tDiff = Date.now() - firstContact.time;\n\n if (tDiff < 250 && Math.abs(xDiff) >= 150) {\n if (xDiff >= 0 && firstContact.x < Math.min(document.body.clientWidth * 0.25, 300))\n showSidebar();\n else if (xDiff < 0 && curX < 300)\n hideSidebar();\n\n firstContact = null;\n }\n }, { passive: true });\n\n // Scroll sidebar to current active section\n var activeSection = sidebar.querySelector(\".active\");\n if (activeSection) {\n sidebar.scrollTop = activeSection.offsetTop;\n }\n})();\n\n(function chapterNavigation() {\n document.addEventListener(\'keydown\', function (e) {\n if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) { return; }\n if (window.search && window.search.hasFocus()) { return; }\n\n switch (e.key) {\n case \'ArrowRight\':\n e.preventDefault();\n var nextButton = document.querySelector(\'.nav-chapters.next\');\n if (nextButton) {\n window.location.href = nextButton.href;\n }\n break;\n case \'ArrowLeft\':\n e.preventDefault();\n var previousButton = document.querySelector(\'.nav-chapters.previous\');\n if (previousButton) {\n window.location.href = previousButton.href;\n }\n break;\n }\n });\n})();\n\n(function clipboard() {\n var clipButtons = document.querySelectorAll(\'.clip-button\');\n\n function hideTooltip(elem) {\n elem.firstChild.innerText = \"\";\n elem.className = \'fa fa-copy clip-button\';\n }\n\n function showTooltip(elem, msg) {\n elem.firstChild.innerText = msg;\n elem.className = \'fa fa-copy tooltipped\';\n }\n\n var clipboardSnippets = new Clipboard(\'.clip-button\', {\n text: function (trigger) {\n hideTooltip(trigger);\n let playpen = trigger.closest(\"pre\");\n return playpen_text(playpen);\n }\n });\n\n Array.from(clipButtons).forEach(function (clipButton) {\n clipButton.addEventListener(\'mouseout\', function (e) {\n hideTooltip(e.currentTarget);\n });\n });\n\n clipboardSnippets.on(\'success\', function (e) {\n e.clearSelection();\n showTooltip(e.trigger, \"Copied!\");\n });\n\n clipboardSnippets.on(\'error\', function (e) {\n showTooltip(e.trigger, \"Clipboard error!\");\n });\n})();\n\n(function scrollToTop () {\n var menuTitle = document.querySelector(\'.menu-title\');\n\n menuTitle.addEventListener(\'click\', function () {\n document.scrollingElement.scrollTo({ top: 0, behavior: \'smooth\' });\n });\n})();\n\n(function autoHideMenu() {\n var menu = document.getElementById(\'menu-bar\');\n\n var previousScrollTop = document.scrollingElement.scrollTop;\n\n document.addEventListener(\'scroll\', function () {\n if (menu.classList.contains(\'folded\') && document.scrollingElement.scrollTop < previousScrollTop) {\n menu.classList.remove(\'folded\');\n } else if (!menu.classList.contains(\'folded\') && document.scrollingElement.scrollTop > previousScrollTop) {\n menu.classList.add(\'folded\');\n }\n\n if (!menu.classList.contains(\'bordered\') && document.scrollingElement.scrollTop > 0) {\n menu.classList.add(\'bordered\');\n }\n\n if (menu.classList.contains(\'bordered\') && document.scrollingElement.scrollTop === 0) {\n menu.classList.remove(\'bordered\');\n }\n\n previousScrollTop = document.scrollingElement.scrollTop;\n }, { passive: true });\n})();\n"