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Reggie, the experimental Gleam -> WASM compiler (mirror) reggie.desertthunder.dev
wasm compiler rust gleam
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// Fix back button cache problemwindow.onunload = function () { };
// Global variable, shared between modulesfunction playground_text(playground, hidden = true) { let code_block = playground.querySelector("code");
if (window.ace && code_block.classList.contains("editable")) { let editor = window.ace.edit(code_block); return editor.getValue(); } else if (hidden) { return code_block.textContent; } else { return code_block.innerText; }}
(function codeSnippets() { function fetch_with_timeout(url, options, timeout = 6000) { return Promise.race([ fetch(url, options), new Promise((_, reject) => setTimeout(() => reject(new Error('timeout')), timeout)) ]); }
var playgrounds = Array.from(document.querySelectorAll(".playground")); if (playgrounds.length > 0) { fetch_with_timeout("https://play.rust-lang.org/meta/crates", { headers: { 'Content-Type': "application/json", }, method: 'POST', mode: 'cors', }) .then(response => response.json()) .then(response => { // get list of crates available in the rust playground let playground_crates = response.crates.map(item => item["id"]); playgrounds.forEach(block => handle_crate_list_update(block, playground_crates)); }); }
function handle_crate_list_update(playground_block, playground_crates) { // update the play buttons after receiving the response update_play_button(playground_block, playground_crates);
// and install on change listener to dynamically update ACE editors if (window.ace) { let code_block = playground_block.querySelector("code"); if (code_block.classList.contains("editable")) { let editor = window.ace.edit(code_block); editor.addEventListener("change", function (e) { update_play_button(playground_block, playground_crates); }); // add Ctrl-Enter command to execute rust code editor.commands.addCommand({ name: "run", bindKey: { win: "Ctrl-Enter", mac: "Ctrl-Enter" }, exec: _editor => run_rust_code(playground_block) }); } } }
// updates the visibility of play button based on `no_run` class and // used crates vs ones available on https://play.rust-lang.org function update_play_button(pre_block, playground_crates) { var play_button = pre_block.querySelector(".play-button");
// skip if code is `no_run` if (pre_block.querySelector('code').classList.contains("no_run")) { play_button.classList.add("hidden"); return; }
// get list of `extern crate`'s from snippet var txt = playground_text(pre_block); var re = /extern\s+crate\s+([a-zA-Z_0-9]+)\s*;/g; var snippet_crates = []; var item; while (item = re.exec(txt)) { snippet_crates.push(item[1]); }
// check if all used crates are available on play.rust-lang.org var all_available = snippet_crates.every(function (elem) { return playground_crates.indexOf(elem) > -1; });
if (all_available) { play_button.classList.remove("hidden"); } else { play_button.classList.add("hidden"); } }
function run_rust_code(code_block) { var result_block = code_block.querySelector(".result"); if (!result_block) { result_block = document.createElement('code'); result_block.className = 'result hljs language-bash';
code_block.append(result_block); }
let text = playground_text(code_block); let classes = code_block.querySelector('code').classList; let edition = "2015"; if(classes.contains("edition2018")) { edition = "2018"; } else if(classes.contains("edition2021")) { edition = "2021"; } var params = { version: "stable", optimize: "0", code: text, edition: edition };
if (text.indexOf("#![feature") !== -1) { params.version = "nightly"; }
result_block.innerText = "Running...";
fetch_with_timeout("https://play.rust-lang.org/evaluate.json", { headers: { 'Content-Type': "application/json", }, method: 'POST', mode: 'cors', body: JSON.stringify(params) }) .then(response => response.json()) .then(response => { if (response.result.trim() === '') { result_block.innerText = "No output"; result_block.classList.add("result-no-output"); } else { result_block.innerText = response.result; result_block.classList.remove("result-no-output"); } }) .catch(error => result_block.innerText = "Playground Communication: " + error.message); }
// Syntax highlighting Configuration hljs.configure({ tabReplace: ' ', // 4 spaces languages: [], // Languages used for auto-detection });
let code_nodes = Array .from(document.querySelectorAll('code')) // Don't highlight `inline code` blocks in headers. .filter(function (node) {return !node.parentElement.classList.contains("header"); });
if (window.ace) { // language-rust class needs to be removed for editable // blocks or highlightjs will capture events code_nodes .filter(function (node) {return node.classList.contains("editable"); }) .forEach(function (block) { block.classList.remove('language-rust'); });
code_nodes .filter(function (node) {return !node.classList.contains("editable"); }) .forEach(function (block) { hljs.highlightBlock(block); }); } else { code_nodes.forEach(function (block) { hljs.highlightBlock(block); }); }
// Adding the hljs class gives code blocks the color css // even if highlighting doesn't apply code_nodes.forEach(function (block) { block.classList.add('hljs'); });
Array.from(document.querySelectorAll("code.hljs")).forEach(function (block) {
var lines = Array.from(block.querySelectorAll('.boring')); // If no lines were hidden, return if (!lines.length) { return; } block.classList.add("hide-boring");
var buttons = document.createElement('div'); buttons.className = 'buttons'; buttons.innerHTML = "<button class=\"fa fa-eye\" title=\"Show hidden lines\" aria-label=\"Show hidden lines\"></button>";
// add expand button var pre_block = block.parentNode; pre_block.insertBefore(buttons, pre_block.firstChild);
pre_block.querySelector('.buttons').addEventListener('click', function (e) { if (e.target.classList.contains('fa-eye')) { e.target.classList.remove('fa-eye'); e.target.classList.add('fa-eye-slash'); e.target.title = 'Hide lines'; e.target.setAttribute('aria-label', e.target.title);
block.classList.remove('hide-boring'); } else if (e.target.classList.contains('fa-eye-slash')) { e.target.classList.remove('fa-eye-slash'); e.target.classList.add('fa-eye'); e.target.title = 'Show hidden lines'; e.target.setAttribute('aria-label', e.target.title);
block.classList.add('hide-boring'); } }); });
if (window.playground_copyable) { Array.from(document.querySelectorAll('pre code')).forEach(function (block) { var pre_block = block.parentNode; if (!pre_block.classList.contains('playground')) { var buttons = pre_block.querySelector(".buttons"); if (!buttons) { buttons = document.createElement('div'); buttons.className = 'buttons'; pre_block.insertBefore(buttons, pre_block.firstChild); }
var clipButton = document.createElement('button'); clipButton.className = 'clip-button'; clipButton.title = 'Copy to clipboard'; clipButton.setAttribute('aria-label', clipButton.title); clipButton.innerHTML = '<i class=\"tooltiptext\"></i>';
buttons.insertBefore(clipButton, buttons.firstChild); } }); }
// Process playground code blocks Array.from(document.querySelectorAll(".playground")).forEach(function (pre_block) { // Add play button var buttons = pre_block.querySelector(".buttons"); if (!buttons) { buttons = document.createElement('div'); buttons.className = 'buttons'; pre_block.insertBefore(buttons, pre_block.firstChild); }
var runCodeButton = document.createElement('button'); runCodeButton.className = 'fa fa-play play-button'; runCodeButton.hidden = true; runCodeButton.title = 'Run this code'; runCodeButton.setAttribute('aria-label', runCodeButton.title);
buttons.insertBefore(runCodeButton, buttons.firstChild); runCodeButton.addEventListener('click', function (e) { run_rust_code(pre_block); });
if (window.playground_copyable) { var copyCodeClipboardButton = document.createElement('button'); copyCodeClipboardButton.className = 'clip-button'; copyCodeClipboardButton.innerHTML = '<i class="tooltiptext"></i>'; copyCodeClipboardButton.title = 'Copy to clipboard'; copyCodeClipboardButton.setAttribute('aria-label', copyCodeClipboardButton.title);
buttons.insertBefore(copyCodeClipboardButton, buttons.firstChild); }
let code_block = pre_block.querySelector("code"); if (window.ace && code_block.classList.contains("editable")) { var undoChangesButton = document.createElement('button'); undoChangesButton.className = 'fa fa-history reset-button'; undoChangesButton.title = 'Undo changes'; undoChangesButton.setAttribute('aria-label', undoChangesButton.title);
buttons.insertBefore(undoChangesButton, buttons.firstChild);
undoChangesButton.addEventListener('click', function () { let editor = window.ace.edit(code_block); editor.setValue(editor.originalCode); editor.clearSelection(); }); } });})();
(function themes() { var html = document.querySelector('html'); var themeToggleButton = document.getElementById('theme-toggle'); var themePopup = document.getElementById('theme-list'); var themeColorMetaTag = document.querySelector('meta[name="theme-color"]'); var themeIds = []; themePopup.querySelectorAll('button.theme').forEach(function (el) { themeIds.push(el.id); }); var stylesheets = { ayuHighlight: document.querySelector("[href$='ayu-highlight.css']"), tomorrowNight: document.querySelector("[href$='tomorrow-night.css']"), highlight: document.querySelector("[href$='highlight.css']"), };
function showThemes() { themePopup.style.display = 'block'; themeToggleButton.setAttribute('aria-expanded', true); themePopup.querySelector("button#" + get_theme()).focus(); }
function updateThemeSelected() { themePopup.querySelectorAll('.theme-selected').forEach(function (el) { el.classList.remove('theme-selected'); }); themePopup.querySelector("button#" + get_theme()).classList.add('theme-selected'); }
function hideThemes() { themePopup.style.display = 'none'; themeToggleButton.setAttribute('aria-expanded', false); themeToggleButton.focus(); }
function get_theme() { var theme; try { theme = localStorage.getItem('mdbook-theme'); } catch (e) { } if (theme === null || theme === undefined || !themeIds.includes(theme)) { return default_theme; } else { return theme; } }
function active_theme() { for (var i = 0; i < themeIds.length; i++) { if (html.classList.contains(themeIds[i])) { return themeIds[i]; } } return get_theme(); }
function set_theme(theme, store = true) { let ace_theme;
if (!themeIds.includes(theme)) { theme = default_theme; }
if (theme == 'night') { stylesheets.ayuHighlight.disabled = true; stylesheets.tomorrowNight.disabled = false; stylesheets.highlight.disabled = true;
ace_theme = "ace/theme/tomorrow_night"; } else { stylesheets.ayuHighlight.disabled = true; stylesheets.tomorrowNight.disabled = true; stylesheets.highlight.disabled = false; ace_theme = "ace/theme/dawn"; }
setTimeout(function () { themeColorMetaTag.content = getComputedStyle(document.documentElement).backgroundColor; }, 1);
if (window.ace && window.editors) { window.editors.forEach(function (editor) { editor.setTheme(ace_theme); }); }
var previousTheme = active_theme();
if (store) { try { localStorage.setItem('mdbook-theme', theme); } catch (e) { } }
html.classList.remove(previousTheme); themeIds.forEach(function (themeId) { html.classList.remove(themeId); }); html.classList.add(theme); updateThemeSelected(); }
// Set theme var theme = get_theme();
set_theme(theme, false);
themeToggleButton.addEventListener('click', function () { if (themePopup.style.display === 'block') { hideThemes(); } else { showThemes(); } });
themePopup.addEventListener('click', function (e) { var button = e.target.closest('button.theme'); if (!button || !themePopup.contains(button)) { return; } set_theme(button.id); });
themePopup.addEventListener('focusout', function(e) { // e.relatedTarget is null in Safari and Firefox on macOS (see workaround below) if (!!e.relatedTarget && !themeToggleButton.contains(e.relatedTarget) && !themePopup.contains(e.relatedTarget)) { hideThemes(); } });
// Should not be needed, but it works around an issue on macOS & iOS: https://github.com/rust-lang/mdBook/issues/628 document.addEventListener('click', function(e) { if (themePopup.style.display === 'block' && !themeToggleButton.contains(e.target) && !themePopup.contains(e.target)) { hideThemes(); } });
document.addEventListener('keydown', function (e) { if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) { return; } if (!themePopup.contains(e.target)) { return; }
switch (e.key) { case 'Escape': e.preventDefault(); hideThemes(); break; case 'ArrowUp': e.preventDefault(); var li = document.activeElement.parentElement; if (li && li.previousElementSibling) { li.previousElementSibling.querySelector('button').focus(); } break; case 'ArrowDown': e.preventDefault(); var li = document.activeElement.parentElement; if (li && li.nextElementSibling) { li.nextElementSibling.querySelector('button').focus(); } break; case 'Home': e.preventDefault(); themePopup.querySelector('li:first-child button').focus(); break; case 'End': e.preventDefault(); themePopup.querySelector('li:last-child button').focus(); break; } });})();
(function sidebar() { var body = document.querySelector("body"); var sidebar = document.getElementById("sidebar"); var sidebarLinks = document.querySelectorAll('#sidebar a'); var sidebarToggleButton = document.getElementById("sidebar-toggle"); var sidebarResizeHandle = document.getElementById("sidebar-resize-handle"); var firstContact = null;
function showSidebar() { body.classList.remove('sidebar-hidden') body.classList.add('sidebar-visible'); Array.from(sidebarLinks).forEach(function (link) { link.setAttribute('tabIndex', 0); }); sidebarToggleButton.setAttribute('aria-expanded', true); sidebar.setAttribute('aria-hidden', false); try { localStorage.setItem('mdbook-sidebar', 'visible'); } catch (e) { } }
function hideSidebar() { body.classList.remove('sidebar-visible') body.classList.add('sidebar-hidden'); Array.from(sidebarLinks).forEach(function (link) { link.setAttribute('tabIndex', -1); }); sidebarToggleButton.setAttribute('aria-expanded', false); sidebar.setAttribute('aria-hidden', true); try { localStorage.setItem('mdbook-sidebar', 'hidden'); } catch (e) { } }
// Toggle sidebar sidebarToggleButton.addEventListener('click', function sidebarToggle() { if (body.classList.contains("sidebar-hidden")) { var current_width = parseInt( document.documentElement.style.getPropertyValue('--sidebar-width'), 10); if (current_width < 150) { document.documentElement.style.setProperty('--sidebar-width', '150px'); } showSidebar(); } else if (body.classList.contains("sidebar-visible")) { hideSidebar(); } else { if (getComputedStyle(sidebar)['transform'] === 'none') { hideSidebar(); } else { showSidebar(); } } });
sidebarResizeHandle.addEventListener('mousedown', initResize, false);
function initResize(e) { window.addEventListener('mousemove', resize, false); window.addEventListener('mouseup', stopResize, false); body.classList.add('sidebar-resizing'); } function resize(e) { var pos = (e.clientX - sidebar.offsetLeft); if (pos < 20) { hideSidebar(); } else { if (body.classList.contains("sidebar-hidden")) { showSidebar(); } pos = Math.min(pos, window.innerWidth - 100); document.documentElement.style.setProperty('--sidebar-width', pos + 'px'); } } //on mouseup remove windows functions mousemove & mouseup function stopResize(e) { body.classList.remove('sidebar-resizing'); window.removeEventListener('mousemove', resize, false); window.removeEventListener('mouseup', stopResize, false); }
document.addEventListener('touchstart', function (e) { firstContact = { x: e.touches[0].clientX, time: Date.now() }; }, { passive: true });
document.addEventListener('touchmove', function (e) { if (!firstContact) return;
var curX = e.touches[0].clientX; var xDiff = curX - firstContact.x, tDiff = Date.now() - firstContact.time;
if (tDiff < 250 && Math.abs(xDiff) >= 150) { if (xDiff >= 0 && firstContact.x < Math.min(document.body.clientWidth * 0.25, 300)) showSidebar(); else if (xDiff < 0 && curX < 300) hideSidebar();
firstContact = null; } }, { passive: true });})();
(function chapterNavigation() { document.addEventListener('keydown', function (e) { if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) { return; } if (window.search && window.search.hasFocus()) { return; } var html = document.querySelector('html');
function next() { var nextButton = document.querySelector('.nav-chapters.next'); if (nextButton) { window.location.href = nextButton.href; } } function prev() { var previousButton = document.querySelector('.nav-chapters.previous'); if (previousButton) { window.location.href = previousButton.href; } } switch (e.key) { case 'ArrowRight': e.preventDefault(); if (html.dir == 'rtl') { prev(); } else { next(); } break; case 'ArrowLeft': e.preventDefault(); if (html.dir == 'rtl') { next(); } else { prev(); } break; } });})();
(function clipboard() { var clipButtons = document.querySelectorAll('.clip-button');
function hideTooltip(elem) { elem.firstChild.innerText = ""; elem.className = 'clip-button'; }
function showTooltip(elem, msg) { elem.firstChild.innerText = msg; elem.className = 'clip-button tooltipped'; }
var clipboardSnippets = new ClipboardJS('.clip-button', { text: function (trigger) { hideTooltip(trigger); let playground = trigger.closest("pre"); return playground_text(playground, false); } });
Array.from(clipButtons).forEach(function (clipButton) { clipButton.addEventListener('mouseout', function (e) { hideTooltip(e.currentTarget); }); });
clipboardSnippets.on('success', function (e) { e.clearSelection(); showTooltip(e.trigger, "Copied!"); });
clipboardSnippets.on('error', function (e) { showTooltip(e.trigger, "Clipboard error!"); });})();
(function scrollToTop () { var menuTitle = document.querySelector('.menu-title');
menuTitle.addEventListener('click', function () { document.scrollingElement.scrollTo({ top: 0, behavior: 'smooth' }); });})();
(function controllMenu() { var menu = document.getElementById('menu-bar');
(function controllPosition() { var scrollTop = document.scrollingElement.scrollTop; var prevScrollTop = scrollTop; var minMenuY = -menu.clientHeight - 50; // When the script loads, the page can be at any scroll (e.g. if you reforesh it). menu.style.top = scrollTop + 'px'; // Same as parseInt(menu.style.top.slice(0, -2), but faster var topCache = menu.style.top.slice(0, -2); menu.classList.remove('sticky'); var stickyCache = false; // Same as menu.classList.contains('sticky'), but faster document.addEventListener('scroll', function () { scrollTop = Math.max(document.scrollingElement.scrollTop, 0); // `null` means that it doesn't need to be updated var nextSticky = null; var nextTop = null; var scrollDown = scrollTop > prevScrollTop; var menuPosAbsoluteY = topCache - scrollTop; if (scrollDown) { nextSticky = false; if (menuPosAbsoluteY > 0) { nextTop = prevScrollTop; } } else { if (menuPosAbsoluteY > 0) { nextSticky = true; } else if (menuPosAbsoluteY < minMenuY) { nextTop = prevScrollTop + minMenuY; } } if (nextSticky === true && stickyCache === false) { menu.classList.add('sticky'); stickyCache = true; } else if (nextSticky === false && stickyCache === true) { menu.classList.remove('sticky'); stickyCache = false; } if (nextTop !== null) { menu.style.top = nextTop + 'px'; topCache = nextTop; } prevScrollTop = scrollTop; }, { passive: true }); })(); (function controllBorder() { function updateBorder() { if (menu.offsetTop === 0) { menu.classList.remove('bordered'); } else { menu.classList.add('bordered'); } } updateBorder(); document.addEventListener('scroll', updateBorder, { passive: true }); })();})();