text: // Local js definitions:
  /* global addClass, getSettingValue, hasClass */
  /* global onEach, onEachLazy, hasOwnProperty, removeClass, updateLocalStorage */
  /* global hideThemeButtonState, showThemeButtonState */
  
  if (!String.prototype.startsWith) {
      String.prototype.startsWith = function(searchString, position) {
          position = position || 0;
          return this.indexOf(searchString, position) === position;
      };
  }
  if (!String.prototype.endsWith) {
      String.prototype.endsWith = function(suffix, length) {
          var l = length || this.length;
          return this.indexOf(suffix, l - suffix.length) !== -1;
      };
  }
  
  if (!DOMTokenList.prototype.add) {
      DOMTokenList.prototype.add = function(className) {
          if (className && !hasClass(this, className)) {
              if (this.className && this.className.length > 0) {
                  this.className += " " + className;
              } else {
                  this.className = className;
              }
          }
      };
  }
  
  if (!DOMTokenList.prototype.remove) {
      DOMTokenList.prototype.remove = function(className) {
          if (className && this.className) {
              this.className = (" " + this.className + " ").replace(" " + className + " ", " ")
                                                           .trim();
          }
      };
  }
  
  (function () {
      var rustdocVars = document.getElementById("rustdoc-vars");
      if (rustdocVars) {
          window.rootPath = rustdocVars.attributes["data-root-path"].value;
          window.currentCrate = rustdocVars.attributes["data-current-crate"].value;
          window.searchJS = rustdocVars.attributes["data-search-js"].value;
      }
      var sidebarVars = document.getElementById("sidebar-vars");
      if (sidebarVars) {
          window.sidebarCurrent = {
              name: sidebarVars.attributes["data-name"].value,
              ty: sidebarVars.attributes["data-ty"].value,
              relpath: sidebarVars.attributes["data-relpath"].value,
          };
      }
  }());
  
  // Gets the human-readable string for the virtual-key code of the
  // given KeyboardEvent, ev.
  //
  // This function is meant as a polyfill for KeyboardEvent#key,
  // since it is not supported in IE 11 or Chrome for Android. We also test for
  // KeyboardEvent#keyCode because the handleShortcut handler is
  // also registered for the keydown event, because Blink doesn't fire
  // keypress on hitting the Escape key.
  //
  // So I guess you could say things are getting pretty interoperable.
  function getVirtualKey(ev) {
      if ("key" in ev && typeof ev.key != "undefined") {
          return ev.key;
      }
  
      var c = ev.charCode || ev.keyCode;
      if (c == 27) {
          return "Escape";
      }
      return String.fromCharCode(c);
  }
  
  function getSearchInput() {
      return document.getElementsByClassName("search-input")[0];
  }
  
  function getSearchElement() {
      return document.getElementById("search");
  }
  
  function getThemesElement() {
      return document.getElementById("theme-choices");
  }
  
  function getThemePickerElement() {
      return document.getElementById("theme-picker");
  }
  
  // Returns the current URL without any query parameter or hash.
  function getNakedUrl() {
      return window.location.href.split("?")[0].split("#")[0];
  }
  
  // Sets the focus on the search bar at the top of the page
  function focusSearchBar() {
      getSearchInput().focus();
  }
  
  // Removes the focus from the search bar.
  function defocusSearchBar() {
      getSearchInput().blur();
  }
  
  (function() {
      "use strict";
  
      // This mapping table should match the discriminants of
      // `rustdoc::html::item_type::ItemType` type in Rust.
      var itemTypes = ["mod",
                       "externcrate",
                       "import",
                       "struct",
                       "enum",
                       "fn",
                       "type",
                       "static",
                       "trait",
                       "impl",
                       "tymethod",
                       "method",
                       "structfield",
                       "variant",
                       "macro",
                       "primitive",
                       "associatedtype",
                       "constant",
                       "associatedconstant",
                       "union",
                       "foreigntype",
                       "keyword",
                       "existential",
                       "attr",
                       "derive",
                       "traitalias"];
  
      var disableShortcuts = getSettingValue("disable-shortcuts") === "true";
      var search_input = getSearchInput();
      var searchTimeout = null;
      var toggleAllDocsId = "toggle-all-docs";
  
      // On the search screen, so you remain on the last tab you opened.
      //
      // 0 for "In Names"
      // 1 for "In Parameters"
      // 2 for "In Return Types"
      var currentTab = 0;
  
      var mouseMovedAfterSearch = true;
  
      var titleBeforeSearch = document.title;
      var searchTitle = null;
  
      function clearInputTimeout() {
          if (searchTimeout !== null) {
              clearTimeout(searchTimeout);
              searchTimeout = null;
          }
      }
  
      function getPageId() {
          if (window.location.hash) {
              var tmp = window.location.hash.replace(/^#/, "");
              if (tmp.length > 0) {
                  return tmp;
              }
          }
          return null;
      }
  
      function showSidebar() {
          var elems = document.getElementsByClassName("sidebar-elems")[0];
          if (elems) {
              addClass(elems, "show-it");
          }
          var sidebar = document.getElementsByClassName("sidebar")[0];
          if (sidebar) {
              addClass(sidebar, "mobile");
              var filler = document.getElementById("sidebar-filler");
              if (!filler) {
                  var div = document.createElement("div");
                  div.id = "sidebar-filler";
                  sidebar.appendChild(div);
              }
          }
      }
  
      function hideSidebar() {
          var elems = document.getElementsByClassName("sidebar-elems")[0];
          if (elems) {
              removeClass(elems, "show-it");
          }
          var sidebar = document.getElementsByClassName("sidebar")[0];
          removeClass(sidebar, "mobile");
          var filler = document.getElementById("sidebar-filler");
          if (filler) {
              filler.remove();
          }
          document.getElementsByTagName("body")[0].style.marginTop = "";
      }
  
      function showSearchResults(search) {
          if (search === null || typeof search === 'undefined') {
              search = getSearchElement();
          }
          addClass(main, "hidden");
          removeClass(search, "hidden");
          mouseMovedAfterSearch = false;
          document.title = searchTitle;
      }
  
      function hideSearchResults(search) {
          if (search === null || typeof search === 'undefined') {
              search = getSearchElement();
          }
          addClass(search, "hidden");
          removeClass(main, "hidden");
          document.title = titleBeforeSearch;
          // We also remove the query parameter from the URL.
          if (browserSupportsHistoryApi()) {
              history.replaceState("", window.currentCrate + " - Rust",
                  getNakedUrl() + window.location.hash);
          }
      }
  
      // used for special search precedence
      var TY_PRIMITIVE = itemTypes.indexOf("primitive");
      var TY_KEYWORD = itemTypes.indexOf("keyword");
  
      function getQueryStringParams() {
          var params = {};
          window.location.search.substring(1).split("&").
              map(function(s) {
                  var pair = s.split("=");
                  params[decodeURIComponent(pair[0])] =
                      typeof pair[1] === "undefined" ? null : decodeURIComponent(pair[1]);
              });
          return params;
      }
  
      function browserSupportsHistoryApi() {
          return window.history && typeof window.history.pushState === "function";
      }
  
      function isHidden(elem) {
          return elem.offsetHeight === 0;
      }
  
      var main = document.getElementById("main");
      var savedHash = "";
  
      function handleHashes(ev) {
          var elem;
          var search = getSearchElement();
          if (ev !== null && search && !hasClass(search, "hidden") && ev.newURL) {
              // This block occurs when clicking on an element in the navbar while
              // in a search.
              hideSearchResults(search);
              var hash = ev.newURL.slice(ev.newURL.indexOf("#") + 1);
              if (browserSupportsHistoryApi()) {
                  // `window.location.search`` contains all the query parameters, not just `search`.
                  history.replaceState(hash, "",
                      getNakedUrl() + window.location.search + "#" + hash);
              }
              elem = document.getElementById(hash);
              if (elem) {
                  elem.scrollIntoView();
              }
          }
          // This part is used in case an element is not visible.
          if (savedHash !== window.location.hash) {
              savedHash = window.location.hash;
              if (savedHash.length === 0) {
                  return;
              }
              elem = document.getElementById(savedHash.slice(1)); // we remove the '#'
              if (!elem || !isHidden(elem)) {
                  return;
              }
              var parent = elem.parentNode;
              if (parent && hasClass(parent, "impl-items")) {
                  // In case this is a trait implementation item, we first need to toggle
                  // the "Show hidden undocumented items".
                  onEachLazy(parent.getElementsByClassName("collapsed"), function(e) {
                      if (e.parentNode === parent) {
                          // Only click on the toggle we're looking for.
                          e.click();
                          return true;
                      }
                  });
                  if (isHidden(elem)) {
                      // The whole parent is collapsed. We need to click on its toggle as well!
                      if (hasClass(parent.lastElementChild, "collapse-toggle")) {
                          parent.lastElementChild.click();
                      }
                  }
              }
          }
      }
  
      function highlightSourceLines(match, ev) {
          if (typeof match === "undefined") {
              // If we're in mobile mode, we should hide the sidebar in any case.
              hideSidebar();
              match = window.location.hash.match(/^#?(\d+)(?:-(\d+))?$/);
          }
          if (!match) {
              return;
          }
          var from = parseInt(match[1], 10);
          var to = from;
          if (typeof match[2] !== "undefined") {
              to = parseInt(match[2], 10);
          }
          if (to < from) {
              var tmp = to;
              to = from;
              from = tmp;
          }
          var elem = document.getElementById(from);
          if (!elem) {
              return;
          }
          if (!ev) {
              var x = document.getElementById(from);
              if (x) {
                  x.scrollIntoView();
              }
          }
          onEachLazy(document.getElementsByClassName("line-numbers"), function(e) {
              onEachLazy(e.getElementsByTagName("span"), function(i_e) {
                  removeClass(i_e, "line-highlighted");
              });
          });
          for (var i = from; i <= to; ++i) {
              elem = document.getElementById(i);
              if (!elem) {
                  break;
              }
              addClass(elem, "line-highlighted");
          }
      }
  
      function onHashChange(ev) {
          // If we're in mobile mode, we should hide the sidebar in any case.
          hideSidebar();
          var match = window.location.hash.match(/^#?(\d+)(?:-(\d+))?$/);
          if (match) {
              return highlightSourceLines(match, ev);
          }
          handleHashes(ev);
      }
  
      function expandSection(id) {
          var elem = document.getElementById(id);
          if (elem && isHidden(elem)) {
              var h3 = elem.parentNode.previousElementSibling;
              if (h3 && h3.tagName !== "H3") {
                  h3 = h3.previousElementSibling; // skip div.docblock
              }
  
              if (h3) {
                  var collapses = h3.getElementsByClassName("collapse-toggle");
                  if (collapses.length > 0) {
                      // The element is not visible, we need to make it appear!
                      collapseDocs(collapses[0], "show");
                  }
              }
          }
      }
  
      function getHelpElement() {
          buildHelperPopup();
          return document.getElementById("help");
      }
  
      function displayHelp(display, ev, help) {
          help = help ? help : getHelpElement();
          if (display === true) {
              if (hasClass(help, "hidden")) {
                  ev.preventDefault();
                  removeClass(help, "hidden");
                  addClass(document.body, "blur");
              }
          } else if (hasClass(help, "hidden") === false) {
              ev.preventDefault();
              addClass(help, "hidden");
              removeClass(document.body, "blur");
          }
      }
  
      function handleEscape(ev) {
          var help = getHelpElement();
          var search = getSearchElement();
          if (hasClass(help, "hidden") === false) {
              displayHelp(false, ev, help);
          } else if (hasClass(search, "hidden") === false) {
              clearInputTimeout();
              ev.preventDefault();
              hideSearchResults(search);
          }
          defocusSearchBar();
          hideThemeButtonState();
      }
  
      function handleShortcut(ev) {
          // Don't interfere with browser shortcuts
          if (ev.ctrlKey || ev.altKey || ev.metaKey || disableShortcuts === true) {
              return;
          }
  
          if (document.activeElement.tagName === "INPUT") {
              switch (getVirtualKey(ev)) {
              case "Escape":
                  handleEscape(ev);
                  break;
              }
          } else {
              switch (getVirtualKey(ev)) {
              case "Escape":
                  handleEscape(ev);
                  break;
  
              case "s":
              case "S":
                  displayHelp(false, ev);
                  ev.preventDefault();
                  focusSearchBar();
                  break;
  
              case "+":
              case "-":
                  ev.preventDefault();
                  toggleAllDocs();
                  break;
  
              case "?":
                  displayHelp(true, ev);
                  break;
  
              case "t":
              case "T":
                  displayHelp(false, ev);
                  ev.preventDefault();
                  var themePicker = getThemePickerElement();
                  themePicker.click();
                  themePicker.focus();
                  break;
  
              default:
                  var themePicker = getThemePickerElement();
                  if (themePicker.parentNode.contains(ev.target)) {
                      handleThemeKeyDown(ev);
                  }
              }
          }
      }
  
      function handleThemeKeyDown(ev) {
          var active = document.activeElement;
          var themes = getThemesElement();
          switch (getVirtualKey(ev)) {
          case "ArrowUp":
              ev.preventDefault();
              if (active.previousElementSibling && ev.target.id !== "theme-picker") {
                  active.previousElementSibling.focus();
              } else {
                  showThemeButtonState();
                  themes.lastElementChild.focus();
              }
              break;
          case "ArrowDown":
              ev.preventDefault();
              if (active.nextElementSibling && ev.target.id !== "theme-picker") {
                  active.nextElementSibling.focus();
              } else {
                  showThemeButtonState();
                  themes.firstElementChild.focus();
              }
              break;
          case "Enter":
          case "Return":
          case "Space":
              if (ev.target.id === "theme-picker" && themes.style.display === "none") {
                  ev.preventDefault();
                  showThemeButtonState();
                  themes.firstElementChild.focus();
              }
              break;
          case "Home":
              ev.preventDefault();
              themes.firstElementChild.focus();
              break;
          case "End":
              ev.preventDefault();
              themes.lastElementChild.focus();
              break;
          // The escape key is handled in handleEscape, not here,
          // so that pressing escape will close the menu even if it isn't focused
          }
      }
  
      function findParentElement(elem, tagName) {
          do {
              if (elem && elem.tagName === tagName) {
                  return elem;
              }
              elem = elem.parentNode;
          } while (elem);
          return null;
      }
  
      document.addEventListener("keypress", handleShortcut);
      document.addEventListener("keydown", handleShortcut);
  
      document.addEventListener("mousemove", function() { mouseMovedAfterSearch = true; });
  
      var handleSourceHighlight = (function() {
          var prev_line_id = 0;
  
          var set_fragment = function(name) {
              var x = window.scrollX,
                  y = window.scrollY;
              if (browserSupportsHistoryApi()) {
                  history.replaceState(null, null, "#" + name);
                  highlightSourceLines();
              } else {
                  location.replace("#" + name);
              }
              // Prevent jumps when selecting one or many lines
              window.scrollTo(x, y);
          };
  
          return function(ev) {
              var cur_line_id = parseInt(ev.target.id, 10);
              ev.preventDefault();
  
              if (ev.shiftKey && prev_line_id) {
                  // Swap selection if needed
                  if (prev_line_id > cur_line_id) {
                      var tmp = prev_line_id;
                      prev_line_id = cur_line_id;
                      cur_line_id = tmp;
                  }
  
                  set_fragment(prev_line_id + "-" + cur_line_id);
              } else {
                  prev_line_id = cur_line_id;
  
                  set_fragment(cur_line_id);
              }
          };
      }());
  
      document.addEventListener("click", function(ev) {
          if (hasClass(ev.target, "help-button")) {
              displayHelp(true, ev);
          } else if (hasClass(ev.target, "collapse-toggle")) {
              collapseDocs(ev.target, "toggle");
          } else if (hasClass(ev.target.parentNode, "collapse-toggle")) {
              collapseDocs(ev.target.parentNode, "toggle");
          } else if (ev.target.tagName === "SPAN" && hasClass(ev.target.parentNode, "line-numbers")) {
              handleSourceHighlight(ev);
          } else if (hasClass(getHelpElement(), "hidden") === false) {
              var help = getHelpElement();
              var is_inside_help_popup = ev.target !== help && help.contains(ev.target);
              if (is_inside_help_popup === false) {
                  addClass(help, "hidden");
                  removeClass(document.body, "blur");
              }
          } else {
              // Making a collapsed element visible on onhashchange seems
              // too late
              var a = findParentElement(ev.target, "A");
              if (a && a.hash) {
                  expandSection(a.hash.replace(/^#/, ""));
              }
          }
      });
  
      (function() {
          var x = document.getElementsByClassName("version-selector");
          if (x.length > 0) {
              x[0].onchange = function() {
                  var i, match,
                      url = document.location.href,
                      stripped = "",
                      len = window.rootPath.match(/\.\.\//g).length + 1;
  
                  for (i = 0; i < len; ++i) {
                      match = url.match(/\/[^\/]*$/);
                      if (i < len - 1) {
                          stripped = match[0] + stripped;
                      }
                      url = url.substring(0, url.length - match[0].length);
                  }
  
                  var selectedVersion = document.getElementsByClassName("version-selector")[0].value;
                  url += "/" + selectedVersion + stripped;
  
                  document.location.href = url;
              };
          }
      }());
  
      /**
       * A function to compute the Levenshtein distance between two strings
       * Licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported
       * Full License can be found at http://creativecommons.org/licenses/by-sa/3.0/legalcode
       * This code is an unmodified version of the code written by Marco de Wit
       * and was found at http://stackoverflow.com/a/18514751/745719
       */
      var levenshtein_row2 = [];
      function levenshtein(s1, s2) {
          if (s1 === s2) {
              return 0;
          }
          var s1_len = s1.length, s2_len = s2.length;
          if (s1_len && s2_len) {
              var i1 = 0, i2 = 0, a, b, c, c2, row = levenshtein_row2;
              while (i1 < s1_len) {
                  row[i1] = ++i1;
              }
              while (i2 < s2_len) {
                  c2 = s2.charCodeAt(i2);
                  a = i2;
                  ++i2;
                  b = i2;
                  for (i1 = 0; i1 < s1_len; ++i1) {
                      c = a + (s1.charCodeAt(i1) !== c2 ? 1 : 0);
                      a = row[i1];
                      b = b < a ? (b < c ? b + 1 : c) : (a < c ? a + 1 : c);
                      row[i1] = b;
                  }
              }
              return b;
          }
          return s1_len + s2_len;
      }
  
      window.initSearch = function(rawSearchIndex) {
          var MAX_LEV_DISTANCE = 3;
          var MAX_RESULTS = 200;
          var GENERICS_DATA = 1;
          var NAME = 0;
          var INPUTS_DATA = 0;
          var OUTPUT_DATA = 1;
          var NO_TYPE_FILTER = -1;
          var currentResults, index, searchIndex;
          var ALIASES = {};
          var params = getQueryStringParams();
  
          // Populate search bar with query string search term when provided,
          // but only if the input bar is empty. This avoid the obnoxious issue
          // where you start trying to do a search, and the index loads, and
          // suddenly your search is gone!
          if (search_input.value === "") {
              search_input.value = params.search || "";
          }
  
          /**
           * Executes the query and builds an index of results
           * @param  {[Object]} query      [The user query]
           * @param  {[type]} searchWords  [The list of search words to query
           *                                against]
           * @param  {[type]} filterCrates [Crate to search in if defined]
           * @return {[type]}              [A search index of results]
           */
          function execQuery(query, searchWords, filterCrates) {
              function itemTypeFromName(typename) {
                  for (var i = 0, len = itemTypes.length; i < len; ++i) {
                      if (itemTypes[i] === typename) {
                          return i;
                      }
                  }
                  return NO_TYPE_FILTER;
              }
  
              var valLower = query.query.toLowerCase(),
                  val = valLower,
                  typeFilter = itemTypeFromName(query.type),
                  results = {}, results_in_args = {}, results_returned = {},
                  split = valLower.split("::");
  
              split = split.filter(function(segment) { return segment !== ""; });
  
              function transformResults(results, isType) {
                  var out = [];
                  for (var i = 0, len = results.length; i < len; ++i) {
                      if (results[i].id > -1) {
                          var obj = searchIndex[results[i].id];
                          obj.lev = results[i].lev;
                          if (isType !== true || obj.type) {
                              var res = buildHrefAndPath(obj);
                              obj.displayPath = pathSplitter(res[0]);
                              obj.fullPath = obj.displayPath + obj.name;
                              // To be sure than it some items aren't considered as duplicate.
                              obj.fullPath += "|" + obj.ty;
                              obj.href = res[1];
                              out.push(obj);
                              if (out.length >= MAX_RESULTS) {
                                  break;
                              }
                          }
                      }
                  }
                  return out;
              }
  
              function sortResults(results, isType) {
                  var ar = [];
                  for (var entry in results) {
                      if (hasOwnProperty(results, entry)) {
                          ar.push(results[entry]);
                      }
                  }
                  results = ar;
                  var i, len, result;
                  for (i = 0, len = results.length; i < len; ++i) {
                      result = results[i];
                      result.word = searchWords[result.id];
                      result.item = searchIndex[result.id] || {};
                  }
                  // if there are no results then return to default and fail
                  if (results.length === 0) {
                      return [];
                  }
  
                  results.sort(function(aaa, bbb) {
                      var a, b;
  
                      // sort by exact match with regard to the last word (mismatch goes later)
                      a = (aaa.word !== val);
                      b = (bbb.word !== val);
                      if (a !== b) { return a - b; }
  
                      // Sort by non levenshtein results and then levenshtein results by the distance
                      // (less changes required to match means higher rankings)
                      a = (aaa.lev);
                      b = (bbb.lev);
                      if (a !== b) { return a - b; }
  
                      // sort by crate (non-current crate goes later)
                      a = (aaa.item.crate !== window.currentCrate);
                      b = (bbb.item.crate !== window.currentCrate);
                      if (a !== b) { return a - b; }
  
                      // sort by item name length (longer goes later)
                      a = aaa.word.length;
                      b = bbb.word.length;
                      if (a !== b) { return a - b; }
  
                      // sort by item name (lexicographically larger goes later)
                      a = aaa.word;
                      b = bbb.word;
                      if (a !== b) { return (a > b ? +1 : -1); }
  
                      // sort by index of keyword in item name (no literal occurrence goes later)
                      a = (aaa.index < 0);
                      b = (bbb.index < 0);
                      if (a !== b) { return a - b; }
                      // (later literal occurrence, if any, goes later)
                      a = aaa.index;
                      b = bbb.index;
                      if (a !== b) { return a - b; }
  
                      // special precedence for primitive and keyword pages
                      if ((aaa.item.ty === TY_PRIMITIVE && bbb.item.ty !== TY_KEYWORD) ||
                          (aaa.item.ty === TY_KEYWORD && bbb.item.ty !== TY_PRIMITIVE)) {
                          return -1;
                      }
                      if ((bbb.item.ty === TY_PRIMITIVE && aaa.item.ty !== TY_PRIMITIVE) ||
                          (bbb.item.ty === TY_KEYWORD && aaa.item.ty !== TY_KEYWORD)) {
                          return 1;
                      }
  
                      // sort by description (no description goes later)
                      a = (aaa.item.desc === "");
                      b = (bbb.item.desc === "");
                      if (a !== b) { return a - b; }
  
                      // sort by type (later occurrence in `itemTypes` goes later)
                      a = aaa.item.ty;
                      b = bbb.item.ty;
                      if (a !== b) { return a - b; }
  
                      // sort by path (lexicographically larger goes later)
                      a = aaa.item.path;
                      b = bbb.item.path;
                      if (a !== b) { return (a > b ? +1 : -1); }
  
                      // que sera, sera
                      return 0;
                  });
  
                  for (i = 0, len = results.length; i < len; ++i) {
                      var result = results[i];
  
                      // this validation does not make sense when searching by types
                      if (result.dontValidate) {
                          continue;
                      }
                      var name = result.item.name.toLowerCase(),
                          path = result.item.path.toLowerCase(),
                          parent = result.item.parent;
  
                      if (isType !== true &&
                          validateResult(name, path, split, parent) === false)
                      {
                          result.id = -1;
                      }
                  }
                  return transformResults(results);
              }
  
              function extractGenerics(val) {
                  val = val.toLowerCase();
                  if (val.indexOf("<") !== -1) {
                      var values = val.substring(val.indexOf("<") + 1, val.lastIndexOf(">"));
                      return {
                          name: val.substring(0, val.indexOf("<")),
                          generics: values.split(/\s*,\s*/),
                      };
                  }
                  return {
                      name: val,
                      generics: [],
                  };
              }
  
              function getObjectNameFromId(id) {
                  if (typeof id === "number") {
                      return searchIndex[id].name;
                  }
                  return id;
              }
  
              function checkGenerics(obj, val) {
                  // The names match, but we need to be sure that all generics kinda
                  // match as well.
                  var tmp_lev, elem_name;
                  if (val.generics.length > 0) {
                      if (obj.length > GENERICS_DATA &&
                            obj[GENERICS_DATA].length >= val.generics.length) {
                          var elems = Object.create(null);
                          var elength = object[GENERICS_DATA].length;
                          for (var x = 0; x < elength; ++x) {
                              elems[getObjectNameFromId(obj[GENERICS_DATA][x])] += 1;
                          }
                          var total = 0;
                          var done = 0;
                          // We need to find the type that matches the most to remove it in order
                          // to move forward.
                          var vlength = val.generics.length;
                          for (x = 0; x < vlength; ++x) {
                              var lev = MAX_LEV_DISTANCE + 1;
                              var firstGeneric = getObjectNameFromId(val.generics[x]);
                              var match = null;
                              if (elems[firstGeneric]) {
                                  match = firstGeneric;
                                  lev = 0;
                              } else {
                                  for (elem_name in elems) {
                                      tmp_lev = levenshtein(elem_name, firstGeneric);
                                      if (tmp_lev < lev) {
                                          lev = tmp_lev;
                                          match = elem_name;
                                      }
                                  }
                              }
                              if (match !== null) {
                                  elems[match] -= 1;
                                  if (elems[match] == 0) {
                                      delete elems[match];
                                  }
                                  total += lev;
                                  done += 1;
                              } else {
                                  return MAX_LEV_DISTANCE + 1;
                              }
                          }
                          return Math.ceil(total / done);
                      }
                  }
                  return MAX_LEV_DISTANCE + 1;
              }
  
              // Check for type name and type generics (if any).
              function checkType(obj, val, literalSearch) {
                  var lev_distance = MAX_LEV_DISTANCE + 1;
                  var len, x, firstGeneric;
                  if (obj[NAME] === val.name) {
                      if (literalSearch === true) {
                          if (val.generics && val.generics.length !== 0) {
                              if (obj.length > GENERICS_DATA &&
                                    obj[GENERICS_DATA].length >= val.generics.length) {
                                  var elems = Object.create(null);
                                  len = obj[GENERICS_DATA].length;
                                  for (x = 0; x < len; ++x) {
                                      elems[getObjectNameFromId(obj[GENERICS_DATA][x])] += 1;
                                  }
  
                                  var allFound = true;
                                  len = val.generics.length;
                                  for (x = 0; x < len; ++x) {
                                      firstGeneric = getObjectNameFromId(val.generics[x]);
                                      if (elems[firstGeneric]) {
                                          elems[firstGeneric] -= 1;
                                      } else {
                                          allFound = false;
                                          break;
                                      }
                                  }
                                  if (allFound === true) {
                                      return true;
                                  }
                              } else {
                                  return false;
                              }
                          }
                          return true;
                      }
                      // If the type has generics but don't match, then it won't return at this point.
                      // Otherwise, `checkGenerics` will return 0 and it'll return.
                      if (obj.length > GENERICS_DATA && obj[GENERICS_DATA].length !== 0) {
                          var tmp_lev = checkGenerics(obj, val);
                          if (tmp_lev <= MAX_LEV_DISTANCE) {
                              return tmp_lev;
                          }
                      } else {
                          return 0;
                      }
                  }
                  // Names didn't match so let's check if one of the generic types could.
                  if (literalSearch === true) {
                       if (obj.length > GENERICS_DATA && obj[GENERICS_DATA].length > 0) {
                          return obj[GENERICS_DATA].some(
                              function(name) {
                                  return name === val.name;
                              });
                      }
                      return false;
                  }
                  lev_distance = Math.min(levenshtein(obj[NAME], val.name), lev_distance);
                  if (lev_distance <= MAX_LEV_DISTANCE) {
                      // The generics didn't match but the name kinda did so we give it
                      // a levenshtein distance value that isn't *this* good so it goes
                      // into the search results but not too high.
                      lev_distance = Math.ceil((checkGenerics(obj, val) + lev_distance) / 2);
                  } else if (obj.length > GENERICS_DATA && obj[GENERICS_DATA].length > 0) {
                      // We can check if the type we're looking for is inside the generics!
                      var olength = obj[GENERICS_DATA].length;
                      for (x = 0; x < olength; ++x) {
                          lev_distance = Math.min(levenshtein(obj[GENERICS_DATA][x], val.name),
                                                  lev_distance);
                      }
                  }
                  // Now whatever happens, the returned distance is "less good" so we should mark it
                  // as such, and so we add 1 to the distance to make it "less good".
                  return lev_distance + 1;
              }
  
              function findArg(obj, val, literalSearch, typeFilter) {
                  var lev_distance = MAX_LEV_DISTANCE + 1;
  
                  if (obj && obj.type && obj.type[INPUTS_DATA] && obj.type[INPUTS_DATA].length > 0) {
                      var length = obj.type[INPUTS_DATA].length;
                      for (var i = 0; i < length; i++) {
                          var tmp = obj.type[INPUTS_DATA][i];
                          if (typePassesFilter(typeFilter, tmp[1]) === false) {
                              continue;
                          }
                          tmp = checkType(tmp, val, literalSearch);
                          if (literalSearch === true) {
                              if (tmp === true) {
                                  return true;
                              }
                              continue;
                          }
                          lev_distance = Math.min(tmp, lev_distance);
                          if (lev_distance === 0) {
                              return 0;
                          }
                      }
                  }
                  return literalSearch === true ? false : lev_distance;
              }
  
              function checkReturned(obj, val, literalSearch, typeFilter) {
                  var lev_distance = MAX_LEV_DISTANCE + 1;
  
                  if (obj && obj.type && obj.type.length > OUTPUT_DATA) {
                      var ret = obj.type[OUTPUT_DATA];
                      if (typeof ret[0] === "string") {
                          ret = [ret];
                      }
                      for (var x = 0, len = ret.length; x < len; ++x) {
                          var tmp = ret[x];
                          if (typePassesFilter(typeFilter, tmp[1]) === false) {
                              continue;
                          }
                          tmp = checkType(tmp, val, literalSearch);
                          if (literalSearch === true) {
                              if (tmp === true) {
                                  return true;
                              }
                              continue;
                          }
                          lev_distance = Math.min(tmp, lev_distance);
                          if (lev_distance === 0) {
                              return 0;
                          }
                      }
                  }
                  return literalSearch === true ? false : lev_distance;
              }
  
              function checkPath(contains, lastElem, ty) {
                  if (contains.length === 0) {
                      return 0;
                  }
                  var ret_lev = MAX_LEV_DISTANCE + 1;
                  var path = ty.path.split("::");
  
                  if (ty.parent && ty.parent.name) {
                      path.push(ty.parent.name.toLowerCase());
                  }
  
                  var length = path.length;
                  var clength = contains.length;
                  if (clength > length) {
                      return MAX_LEV_DISTANCE + 1;
                  }
                  for (var i = 0; i < length; ++i) {
                      if (i + clength > length) {
                          break;
                      }
                      var lev_total = 0;
                      var aborted = false;
                      for (var x = 0; x < clength; ++x) {
                          var lev = levenshtein(path[i + x], contains[x]);
                          if (lev > MAX_LEV_DISTANCE) {
                              aborted = true;
                              break;
                          }
                          lev_total += lev;
                      }
                      if (aborted === false) {
                          ret_lev = Math.min(ret_lev, Math.round(lev_total / clength));
                      }
                  }
                  return ret_lev;
              }
  
              function typePassesFilter(filter, type) {
                  // No filter
                  if (filter <= NO_TYPE_FILTER) return true;
  
                  // Exact match
                  if (filter === type) return true;
  
                  // Match related items
                  var name = itemTypes[type];
                  switch (itemTypes[filter]) {
                      case "constant":
                          return name === "associatedconstant";
                      case "fn":
                          return name === "method" || name === "tymethod";
                      case "type":
                          return name === "primitive" || name === "associatedtype";
                      case "trait":
                          return name === "traitalias";
                  }
  
                  // No match
                  return false;
              }
  
              function createAliasFromItem(item) {
                  return {
                      crate: item.crate,
                      name: item.name,
                      path: item.path,
                      desc: item.desc,
                      ty: item.ty,
                      parent: item.parent,
                      type: item.type,
                      is_alias: true,
                  };
              }
  
              function handleAliases(ret, query, filterCrates) {
                  // We separate aliases and crate aliases because we want to have current crate
                  // aliases to be before the others in the displayed results.
                  var aliases = [];
                  var crateAliases = [];
                  if (filterCrates !== undefined) {
                      if (ALIASES[filterCrates] && ALIASES[filterCrates][query.search]) {
                          var query_aliases = ALIASES[filterCrates][query.search];
                          var len = query_aliases.length;
                          for (var i = 0; i < len; ++i) {
                              aliases.push(createAliasFromItem(searchIndex[query_aliases[i]]));
                          }
                      }
                  } else {
                      Object.keys(ALIASES).forEach(function(crate) {
                          if (ALIASES[crate][query.search]) {
                              var pushTo = crate === window.currentCrate ? crateAliases : aliases;
                              var query_aliases = ALIASES[crate][query.search];
                              var len = query_aliases.length;
                              for (var i = 0; i < len; ++i) {
                                  pushTo.push(createAliasFromItem(searchIndex[query_aliases[i]]));
                              }
                          }
                      });
                  }
  
                  var sortFunc = function(aaa, bbb) {
                      if (aaa.path < bbb.path) {
                          return 1;
                      } else if (aaa.path === bbb.path) {
                          return 0;
                      }
                      return -1;
                  };
                  crateAliases.sort(sortFunc);
                  aliases.sort(sortFunc);
  
                  var pushFunc = function(alias) {
                      alias.alias = query.raw;
                      var res = buildHrefAndPath(alias);
                      alias.displayPath = pathSplitter(res[0]);
                      alias.fullPath = alias.displayPath + alias.name;
                      alias.href = res[1];
  
                      ret.others.unshift(alias);
                      if (ret.others.length > MAX_RESULTS) {
                          ret.others.pop();
                      }
                  };
                  onEach(aliases, pushFunc);
                  onEach(crateAliases, pushFunc);
              }
  
              // quoted values mean literal search
              var nSearchWords = searchWords.length;
              var i, it;
              var ty;
              var fullId;
              var returned;
              var in_args;
              var len;
              if ((val.charAt(0) === "\"" || val.charAt(0) === "'") &&
                  val.charAt(val.length - 1) === val.charAt(0))
              {
                  val = extractGenerics(val.substr(1, val.length - 2));
                  for (i = 0; i < nSearchWords; ++i) {
                      if (filterCrates !== undefined && searchIndex[i].crate !== filterCrates) {
                          continue;
                      }
                      in_args = findArg(searchIndex[i], val, true, typeFilter);
                      returned = checkReturned(searchIndex[i], val, true, typeFilter);
                      ty = searchIndex[i];
                      fullId = ty.id;
  
                      if (searchWords[i] === val.name
                          && typePassesFilter(typeFilter, searchIndex[i].ty)
                          && results[fullId] === undefined) {
                          results[fullId] = {
                              id: i,
                              index: -1,
                              dontValidate: true,
                          };
                      }
                      if (in_args === true && results_in_args[fullId] === undefined) {
                          results_in_args[fullId] = {
                              id: i,
                              index: -1,
                              dontValidate: true,
                          };
                      }
                      if (returned === true && results_returned[fullId] === undefined) {
                          results_returned[fullId] = {
                              id: i,
                              index: -1,
                              dontValidate: true,
                          };
                      }
                  }
                  query.inputs = [val];
                  query.output = val;
                  query.search = val;
              // searching by type
              } else if (val.search("->") > -1) {
                  var trimmer = function(s) { return s.trim(); };
                  var parts = val.split("->").map(trimmer);
                  var input = parts[0];
                  // sort inputs so that order does not matter
                  var inputs = input.split(",").map(trimmer).sort();
                  for (i = 0, len = inputs.length; i < len; ++i) {
                      inputs[i] = extractGenerics(inputs[i]);
                  }
                  var output = extractGenerics(parts[1]);
  
                  for (i = 0; i < nSearchWords; ++i) {
                      if (filterCrates !== undefined && searchIndex[i].crate !== filterCrates) {
                          continue;
                      }
                      var type = searchIndex[i].type;
                      ty = searchIndex[i];
                      if (!type) {
                          continue;
                      }
                      fullId = ty.id;
  
                      returned = checkReturned(ty, output, true, NO_TYPE_FILTER);
                      if (output.name === "*" || returned === true) {
                          in_args = false;
                          var is_module = false;
  
                          if (input === "*") {
                              is_module = true;
                          } else {
                              var allFound = true;
                              for (it = 0, len = inputs.length; allFound === true && it < len; it++) {
                                  allFound = checkType(type, inputs[it], true);
                              }
                              in_args = allFound;
                          }
                          if (in_args === true) {
                              results_in_args[fullId] = {
                                  id: i,
                                  index: -1,
                                  dontValidate: true,
                              };
                          }
                          if (returned === true) {
                              results_returned[fullId] = {
                                  id: i,
                                  index: -1,
                                  dontValidate: true,
                              };
                          }
                          if (is_module === true) {
                              results[fullId] = {
                                  id: i,
                                  index: -1,
                                  dontValidate: true,
                              };
                          }
                      }
                  }
                  query.inputs = inputs.map(function(input) {
                      return input.name;
                  });
                  query.output = output.name;
              } else {
                  query.inputs = [val];
                  query.output = val;
                  query.search = val;
                  // gather matching search results up to a certain maximum
                  val = val.replace(/\_/g, "");
  
                  var valGenerics = extractGenerics(val);
  
                  var paths = valLower.split("::");
                  var j;
                  for (j = 0, len = paths.length; j < len; ++j) {
                      if (paths[j] === "") {
                          paths.splice(j, 1);
                          j -= 1;
                      }
                  }
                  val = paths[paths.length - 1];
                  var contains = paths.slice(0, paths.length > 1 ? paths.length - 1 : 1);
  
                  var lev;
                  for (j = 0; j < nSearchWords; ++j) {
                      ty = searchIndex[j];
                      if (!ty || (filterCrates !== undefined && ty.crate !== filterCrates)) {
                          continue;
                      }
                      var lev_add = 0;
                      if (paths.length > 1) {
                          lev = checkPath(contains, paths[paths.length - 1], ty);
                          if (lev > MAX_LEV_DISTANCE) {
                              continue;
                          } else if (lev > 0) {
                              lev_add = lev / 10;
                          }
                      }
  
                      returned = MAX_LEV_DISTANCE + 1;
                      in_args = MAX_LEV_DISTANCE + 1;
                      var index = -1;
                      // we want lev results to go lower than others
                      lev = MAX_LEV_DISTANCE + 1;
                      fullId = ty.id;
  
                      if (searchWords[j].indexOf(split[i]) > -1 ||
                          searchWords[j].indexOf(val) > -1 ||
                          ty.normalizedName.indexOf(val) > -1)
                      {
                          // filter type: ... queries
                          if (typePassesFilter(typeFilter, ty.ty) && results[fullId] === undefined) {
                              index = ty.normalizedName.indexOf(val);
                          }
                      }
                      if ((lev = levenshtein(searchWords[j], val)) <= MAX_LEV_DISTANCE) {
                          if (typePassesFilter(typeFilter, ty.ty) === false) {
                              lev = MAX_LEV_DISTANCE + 1;
                          } else {
                              lev += 1;
                          }
                      }
                      in_args = findArg(ty, valGenerics, false, typeFilter);
                      returned = checkReturned(ty, valGenerics, false, typeFilter);
  
                      lev += lev_add;
                      if (lev > 0 && val.length > 3 && searchWords[j].indexOf(val) > -1) {
                          if (val.length < 6) {
                              lev -= 1;
                          } else {
                              lev = 0;
                          }
                      }
                      if (in_args <= MAX_LEV_DISTANCE) {
                          if (results_in_args[fullId] === undefined) {
                              results_in_args[fullId] = {
                                  id: j,
                                  index: index,
                                  lev: in_args,
                              };
                          }
                          results_in_args[fullId].lev =
                              Math.min(results_in_args[fullId].lev, in_args);
                      }
                      if (returned <= MAX_LEV_DISTANCE) {
                          if (results_returned[fullId] === undefined) {
                              results_returned[fullId] = {
                                  id: j,
                                  index: index,
                                  lev: returned,
                              };
                          }
                          results_returned[fullId].lev =
                              Math.min(results_returned[fullId].lev, returned);
                      }
                      if (index !== -1 || lev <= MAX_LEV_DISTANCE) {
                          if (index !== -1 && paths.length < 2) {
                              lev = 0;
                          }
                          if (results[fullId] === undefined) {
                              results[fullId] = {
                                  id: j,
                                  index: index,
                                  lev: lev,
                              };
                          }
                          results[fullId].lev = Math.min(results[fullId].lev, lev);
                      }
                  }
              }
  
              var ret = {
                  "in_args": sortResults(results_in_args, true),
                  "returned": sortResults(results_returned, true),
                  "others": sortResults(results),
              };
              handleAliases(ret, query, filterCrates);
              return ret;
          }
  
          /**
           * Validate performs the following boolean logic. For example:
           * "File::open" will give IF A PARENT EXISTS => ("file" && "open")
           * exists in (name || path || parent) OR => ("file" && "open") exists in
           * (name || path )
           *
           * This could be written functionally, but I wanted to minimise
           * functions on stack.
           *
           * @param  {[string]} name   [The name of the result]
           * @param  {[string]} path   [The path of the result]
           * @param  {[string]} keys   [The keys to be used (["file", "open"])]
           * @param  {[object]} parent [The parent of the result]
           * @return {[boolean]}       [Whether the result is valid or not]
           */
          function validateResult(name, path, keys, parent) {
              for (var i = 0, len = keys.length; i < len; ++i) {
                  // each check is for validation so we negate the conditions and invalidate
                  if (!(
                      // check for an exact name match
                      name.indexOf(keys[i]) > -1 ||
                      // then an exact path match
                      path.indexOf(keys[i]) > -1 ||
                      // next if there is a parent, check for exact parent match
                      (parent !== undefined && parent.name !== undefined &&
                          parent.name.toLowerCase().indexOf(keys[i]) > -1) ||
                      // lastly check to see if the name was a levenshtein match
                      levenshtein(name, keys[i]) <= MAX_LEV_DISTANCE)) {
                      return false;
                  }
              }
              return true;
          }
  
          function getQuery(raw) {
              var matches, type, query;
              query = raw;
  
              matches = query.match(/^(fn|mod|struct|enum|trait|type|const|macro)\s*:\s*/i);
              if (matches) {
                  type = matches[1].replace(/^const$/, "constant");
                  query = query.substring(matches[0].length);
              }
  
              return {
                  raw: raw,
                  query: query,
                  type: type,
                  id: query + type
              };
          }
  
          function initSearchNav() {
              var hoverTimeout;
  
              var click_func = function(e) {
                  var el = e.target;
                  // to retrieve the real "owner" of the event.
                  while (el.tagName !== "TR") {
                      el = el.parentNode;
                  }
                  var dst = e.target.getElementsByTagName("a");
                  if (dst.length < 1) {
                      return;
                  }
                  dst = dst[0];
                  if (window.location.pathname === dst.pathname) {
                      hideSearchResults();
                      document.location.href = dst.href;
                  }
              };
              var mouseover_func = function(e) {
                  if (mouseMovedAfterSearch) {
                      var el = e.target;
                      // to retrieve the real "owner" of the event.
                      while (el.tagName !== "TR") {
                          el = el.parentNode;
                      }
                      clearTimeout(hoverTimeout);
                      hoverTimeout = setTimeout(function() {
                          onEachLazy(document.getElementsByClassName("search-results"), function(e) {
                              onEachLazy(e.getElementsByClassName("result"), function(i_e) {
                                  removeClass(i_e, "highlighted");
                              });
                          });
                          addClass(el, "highlighted");
                      }, 20);
                  }
              };
              onEachLazy(document.getElementsByClassName("search-results"), function(e) {
                  onEachLazy(e.getElementsByClassName("result"), function(i_e) {
                      i_e.onclick = click_func;
                      i_e.onmouseover = mouseover_func;
                  });
              });
  
              search_input.onkeydown = function(e) {
                  // "actives" references the currently highlighted item in each search tab.
                  // Each array in "actives" represents a tab.
                  var actives = [[], [], []];
                  // "current" is used to know which tab we're looking into.
                  var current = 0;
                  onEachLazy(document.getElementById("results").childNodes, function(e) {
                      onEachLazy(e.getElementsByClassName("highlighted"), function(h_e) {
                          actives[current].push(h_e);
                      });
                      current += 1;
                  });
  
                  if (e.which === 38) { // up
                      if (e.ctrlKey) { // Going through result tabs.
                          printTab(currentTab > 0 ? currentTab - 1 : 2);
                      } else {
                          if (!actives[currentTab].length ||
                              !actives[currentTab][0].previousElementSibling) {
                              return;
                          }
                          addClass(actives[currentTab][0].previousElementSibling, "highlighted");
                          removeClass(actives[currentTab][0], "highlighted");
                      }
                      e.preventDefault();
                  } else if (e.which === 40) { // down
                      if (e.ctrlKey) { // Going through result tabs.
                          printTab(currentTab > 1 ? 0 : currentTab + 1);
                      } else if (!actives[currentTab].length) {
                          var results = document.getElementById("results").childNodes;
                          if (results.length > 0) {
                              var res = results[currentTab].getElementsByClassName("result");
                              if (res.length > 0) {
                                  addClass(res[0], "highlighted");
                              }
                          }
                      } else if (actives[currentTab][0].nextElementSibling) {
                          addClass(actives[currentTab][0].nextElementSibling, "highlighted");
                          removeClass(actives[currentTab][0], "highlighted");
                      }
                      e.preventDefault();
                  } else if (e.which === 13) { // return
                      if (actives[currentTab].length) {
                          document.location.href =
                              actives[currentTab][0].getElementsByTagName("a")[0].href;
                      }
                  } else if (e.which === 16) { // shift
                      // Does nothing, it's just to avoid losing "focus" on the highlighted element.
                  } else if (actives[currentTab].length > 0) {
                      removeClass(actives[currentTab][0], "highlighted");
                  }
              };
          }
  
          function buildHrefAndPath(item) {
              var displayPath;
              var href;
              var type = itemTypes[item.ty];
              var name = item.name;
              var path = item.path;
  
              if (type === "mod") {
                  displayPath = path + "::";
                  href = window.rootPath + path.replace(/::/g, "/") + "/" +
                         name + "/index.html";
              } else if (type === "primitive" || type === "keyword") {
                  displayPath = "";
                  href = window.rootPath + path.replace(/::/g, "/") +
                         "/" + type + "." + name + ".html";
              } else if (type === "externcrate") {
                  displayPath = "";
                  href = window.rootPath + name + "/index.html";
              } else if (item.parent !== undefined) {
                  var myparent = item.parent;
                  var anchor = "#" + type + "." + name;
                  var parentType = itemTypes[myparent.ty];
                  var pageType = parentType;
                  var pageName = myparent.name;
  
                  if (parentType === "primitive") {
                      displayPath = myparent.name + "::";
                  } else if (type === "structfield" && parentType === "variant") {
                      // Structfields belonging to variants are special: the
                      // final path element is the enum name.
                      var enumNameIdx = item.path.lastIndexOf("::");
                      var enumName = item.path.substr(enumNameIdx + 2);
                      path = item.path.substr(0, enumNameIdx);
                      displayPath = path + "::" + enumName + "::" + myparent.name + "::";
                      anchor = "#variant." + myparent.name + ".field." + name;
                      pageType = "enum";
                      pageName = enumName;
                  } else {
                      displayPath = path + "::" + myparent.name + "::";
                  }
                  href = window.rootPath + path.replace(/::/g, "/") +
                         "/" + pageType +
                         "." + pageName +
                         ".html" + anchor;
              } else {
                  displayPath = item.path + "::";
                  href = window.rootPath + item.path.replace(/::/g, "/") +
                         "/" + type + "." + name + ".html";
              }
              return [displayPath, href];
          }
  
          function escape(content) {
              var h1 = document.createElement("h1");
              h1.textContent = content;
              return h1.innerHTML;
          }
  
          function pathSplitter(path) {
              var tmp = "<span>" + path.replace(/::/g, "::</span><span>");
              if (tmp.endsWith("<span>")) {
                  return tmp.slice(0, tmp.length - 6);
              }
              return tmp;
          }
  
          function addTab(array, query, display) {
              var extraStyle = "";
              if (display === false) {
                  extraStyle = " style=\"display: none;\"";
              }
  
              var output = "";
              var duplicates = {};
              var length = 0;
              if (array.length > 0) {
                  output = "<table class=\"search-results\"" + extraStyle + ">";
  
                  array.forEach(function(item) {
                      var name, type;
  
                      name = item.name;
                      type = itemTypes[item.ty];
  
                      if (item.is_alias !== true) {
                          if (duplicates[item.fullPath]) {
                              return;
                          }
                          duplicates[item.fullPath] = true;
                      }
                      length += 1;
  
                      output += "<tr class=\"" + type + " result\"><td>" +
                                "<a href=\"" + item.href + "\">" +
                                (item.is_alias === true ?
                                 ("<span class=\"alias\"><b>" + item.alias + " </b></span><span " +
                                    "class=\"grey\"><i>&nbsp;- see&nbsp;</i></span>") : "") +
                                item.displayPath + "<span class=\"" + type + "\">" +
                                name + "</span></a></td><td>" +
                                "<a href=\"" + item.href + "\">" +
                                "<span class=\"desc\">" + item.desc +
                                "&nbsp;</span></a></td></tr>";
                  });
                  output += "</table>";
              } else {
                  output = "<div class=\"search-failed\"" + extraStyle + ">No results :(<br/>" +
                      "Try on <a href=\"https://duckduckgo.com/?q=" +
                      encodeURIComponent("rust " + query.query) +
                      "\">DuckDuckGo</a>?<br/><br/>" +
                      "Or try looking in one of these:<ul><li>The <a " +
                      "href=\"https://doc.rust-lang.org/reference/index.html\">Rust Reference</a> " +
                      " for technical details about the language.</li><li><a " +
                      "href=\"https://doc.rust-lang.org/rust-by-example/index.html\">Rust By " +
                      "Example</a> for expository code examples.</a></li><li>The <a " +
                      "href=\"https://doc.rust-lang.org/book/index.html\">Rust Book</a> for " +
                      "introductions to language features and the language itself.</li><li><a " +
                      "href=\"https://docs.rs\">Docs.rs</a> for documentation of crates released on" +
                      " <a href=\"https://crates.io/\">crates.io</a>.</li></ul></div>";
              }
              return [output, length];
          }
  
          function makeTabHeader(tabNb, text, nbElems) {
              if (currentTab === tabNb) {
                  return "<button class=\"selected\">" + text +
                         " <div class=\"count\">(" + nbElems + ")</div></button>";
              }
              return "<button>" + text + " <div class=\"count\">(" + nbElems + ")</div></button>";
          }
  
          function showResults(results) {
              var search = getSearchElement();
              if (results.others.length === 1
                  && getSettingValue("go-to-only-result") === "true"
                  // By default, the search DOM element is "empty" (meaning it has no children not
                  // text content). Once a search has been run, it won't be empty, even if you press
                  // ESC or empty the search input (which also "cancels" the search).
                  && (!search.firstChild || search.firstChild.innerText !== getSearchLoadingText()))
              {
                  var elem = document.createElement("a");
                  elem.href = results.others[0].href;
                  elem.style.display = "none";
                  // For firefox, we need the element to be in the DOM so it can be clicked.
                  document.body.appendChild(elem);
                  elem.click();
                  return;
              }
              var query = getQuery(search_input.value);
  
              currentResults = query.id;
  
              var ret_others = addTab(results.others, query);
              var ret_in_args = addTab(results.in_args, query, false);
              var ret_returned = addTab(results.returned, query, false);
  
              // Navigate to the relevant tab if the current tab is empty, like in case users search
              // for "-> String". If they had selected another tab previously, they have to click on
              // it again.
              if ((currentTab === 0 && ret_others[1] === 0) ||
                      (currentTab === 1 && ret_in_args[1] === 0) ||
                      (currentTab === 2 && ret_returned[1] === 0)) {
                  if (ret_others[1] !== 0) {
                      currentTab = 0;
                  } else if (ret_in_args[1] !== 0) {
                      currentTab = 1;
                  } else if (ret_returned[1] !== 0) {
                      currentTab = 2;
                  }
              }
  
              var output = "<h1>Results for " + escape(query.query) +
                  (query.type ? " (type: " + escape(query.type) + ")" : "") + "</h1>" +
                  "<div id=\"titles\">" +
                  makeTabHeader(0, "In Names", ret_others[1]) +
                  makeTabHeader(1, "In Parameters", ret_in_args[1]) +
                  makeTabHeader(2, "In Return Types", ret_returned[1]) +
                  "</div><div id=\"results\">" +
                  ret_others[0] + ret_in_args[0] + ret_returned[0] + "</div>";
  
              search.innerHTML = output;
              showSearchResults(search);
              initSearchNav();
              var elems = document.getElementById("titles").childNodes;
              elems[0].onclick = function() { printTab(0); };
              elems[1].onclick = function() { printTab(1); };
              elems[2].onclick = function() { printTab(2); };
              printTab(currentTab);
          }
  
          function execSearch(query, searchWords, filterCrates) {
              function getSmallest(arrays, positions, notDuplicates) {
                  var start = null;
  
                  for (var it = 0, len = positions.length; it < len; ++it) {
                      if (arrays[it].length > positions[it] &&
                          (start === null || start > arrays[it][positions[it]].lev) &&
                          !notDuplicates[arrays[it][positions[it]].fullPath]) {
                          start = arrays[it][positions[it]].lev;
                      }
                  }
                  return start;
              }
  
              function mergeArrays(arrays) {
                  var ret = [];
                  var positions = [];
                  var notDuplicates = {};
  
                  for (var x = 0, arrays_len = arrays.length; x < arrays_len; ++x) {
                      positions.push(0);
                  }
                  while (ret.length < MAX_RESULTS) {
                      var smallest = getSmallest(arrays, positions, notDuplicates);
  
                      if (smallest === null) {
                          break;
                      }
                      for (x = 0; x < arrays_len && ret.length < MAX_RESULTS; ++x) {
                          if (arrays[x].length > positions[x] &&
                                  arrays[x][positions[x]].lev === smallest &&
                                  !notDuplicates[arrays[x][positions[x]].fullPath]) {
                              ret.push(arrays[x][positions[x]]);
                              notDuplicates[arrays[x][positions[x]].fullPath] = true;
                              positions[x] += 1;
                          }
                      }
                  }
                  return ret;
              }
  
              var queries = query.raw.split(",");
              var results = {
                  "in_args": [],
                  "returned": [],
                  "others": [],
              };
  
              for (var i = 0, len = queries.length; i < len; ++i) {
                  query = queries[i].trim();
                  if (query.length !== 0) {
                      var tmp = execQuery(getQuery(query), searchWords, filterCrates);
  
                      results.in_args.push(tmp.in_args);
                      results.returned.push(tmp.returned);
                      results.others.push(tmp.others);
                  }
              }
              if (queries.length > 1) {
                  return {
                      "in_args": mergeArrays(results.in_args),
                      "returned": mergeArrays(results.returned),
                      "others": mergeArrays(results.others),
                  };
              }
              return {
                  "in_args": results.in_args[0],
                  "returned": results.returned[0],
                  "others": results.others[0],
              };
          }
  
          function getFilterCrates() {
              var elem = document.getElementById("crate-search");
  
              if (elem && elem.value !== "All crates" && hasOwnProperty(rawSearchIndex, elem.value)) {
                  return elem.value;
              }
              return undefined;
          }
  
          function search(e, forced) {
              var params = getQueryStringParams();
              var query = getQuery(search_input.value.trim());
  
              if (e) {
                  e.preventDefault();
              }
  
              if (query.query.length === 0) {
                  return;
              }
              if (forced !== true && query.id === currentResults) {
                  if (query.query.length > 0) {
                      putBackSearch(search_input);
                  }
                  return;
              }
  
              // Update document title to maintain a meaningful browser history
              searchTitle = "Results for " + query.query + " - Rust";
  
              // Because searching is incremental by character, only the most
              // recent search query is added to the browser history.
              if (browserSupportsHistoryApi()) {
                  var newURL = getNakedUrl() + "?search=" + encodeURIComponent(query.raw) +
                      window.location.hash;
                  if (!history.state && !params.search) {
                      history.pushState(query, "", newURL);
                  } else {
                      history.replaceState(query, "", newURL);
                  }
              }
  
              var filterCrates = getFilterCrates();
              showResults(execSearch(query, index, filterCrates));
          }
  
          function buildIndex(rawSearchIndex) {
              searchIndex = [];
              var searchWords = [];
              var i, word;
              var currentIndex = 0;
              var id = 0;
  
              for (var crate in rawSearchIndex) {
                  if (!hasOwnProperty(rawSearchIndex, crate)) { continue; }
  
                  var crateSize = 0;
  
                  searchWords.push(crate);
                  var normalizedName = crate.indexOf("_") === -1
                      ? crate
                      : crate.replace(/_/g, "");
                  // This object should have exactly the same set of fields as the "row"
                  // object defined below. Your JavaScript runtime will thank you.
                  // https://mathiasbynens.be/notes/shapes-ics
                  var crateRow = {
                      crate: crate,
                      ty: 1, // == ExternCrate
                      name: crate,
                      path: "",
                      desc: rawSearchIndex[crate].doc,
                      parent: undefined,
                      type: null,
                      id: id,
                      normalizedName: normalizedName,
                  };
                  id += 1;
                  searchIndex.push(crateRow);
                  currentIndex += 1;
  
                  // an array of (Number) item types
                  var itemTypes = rawSearchIndex[crate].t;
                  // an array of (String) item names
                  var itemNames = rawSearchIndex[crate].n;
                  // an array of (String) full paths (or empty string for previous path)
                  var itemPaths = rawSearchIndex[crate].q;
                  // an array of (String) descriptions
                  var itemDescs = rawSearchIndex[crate].d;
                  // an array of (Number) the parent path index + 1 to `paths`, or 0 if none
                  var itemParentIdxs = rawSearchIndex[crate].i;
                  // an array of (Object | null) the type of the function, if any
                  var itemFunctionSearchTypes = rawSearchIndex[crate].f;
                  // an array of [(Number) item type,
                  //              (String) name]
                  var paths = rawSearchIndex[crate].p;
                  // a array of [(String) alias name
                  //             [Number] index to items]
                  var aliases = rawSearchIndex[crate].a;
  
                  // convert `rawPaths` entries into object form
                  var len = paths.length;
                  for (i = 0; i < len; ++i) {
                      paths[i] = {ty: paths[i][0], name: paths[i][1]};
                  }
  
                  // convert `item*` into an object form, and construct word indices.
                  //
                  // before any analysis is performed lets gather the search terms to
                  // search against apart from the rest of the data.  This is a quick
                  // operation that is cached for the life of the page state so that
                  // all other search operations have access to this cached data for
                  // faster analysis operations
                  len = itemTypes.length;
                  var lastPath = "";
                  for (i = 0; i < len; ++i) {
                      // This object should have exactly the same set of fields as the "crateRow"
                      // object defined above.
                      if (typeof itemNames[i] === "string") {
                          word = itemNames[i].toLowerCase();
                          searchWords.push(word);
                      } else {
                          word = "";
                          searchWords.push("");
                      }
                      var normalizedName = word.indexOf("_") === -1
                          ? word
                          : word.replace(/_/g, "");
                      var row = {
                          crate: crate,
                          ty: itemTypes[i],
                          name: itemNames[i],
                          path: itemPaths[i] ? itemPaths[i] : lastPath,
                          desc: itemDescs[i],
                          parent: itemParentIdxs[i] > 0 ? paths[itemParentIdxs[i] - 1] : undefined,
                          type: itemFunctionSearchTypes[i],
                          id: id,
                          normalizedName: normalizedName,
                      };
                      id += 1;
                      searchIndex.push(row);
                      lastPath = row.path;
                      crateSize += 1;
                  }
  
                  if (aliases) {
                      ALIASES[crate] = {};
                      var j, local_aliases;
                      for (var alias_name in aliases) {
                          if (!aliases.hasOwnProperty(alias_name)) { continue; }
  
                          if (!ALIASES[crate].hasOwnProperty(alias_name)) {
                              ALIASES[crate][alias_name] = [];
                          }
                          local_aliases = aliases[alias_name];
                          for (j = 0, len = local_aliases.length; j < len; ++j) {
                              ALIASES[crate][alias_name].push(local_aliases[j] + currentIndex);
                          }
                      }
                  }
                  currentIndex += crateSize;
              }
              return searchWords;
          }
  
          function registerSearchEvents() {
              var searchAfter500ms = function() {
                  clearInputTimeout();
                  if (search_input.value.length === 0) {
                      if (browserSupportsHistoryApi()) {
                          history.replaceState("", window.currentCrate + " - Rust",
                              getNakedUrl() + window.location.hash);
                      }
                      hideSearchResults();
                  } else {
                      searchTimeout = setTimeout(search, 500);
                  }
              };
              search_input.onkeyup = searchAfter500ms;
              search_input.oninput = searchAfter500ms;
              document.getElementsByClassName("search-form")[0].onsubmit = function(e) {
                  e.preventDefault();
                  clearInputTimeout();
                  search();
              };
              search_input.onchange = function(e) {
                  if (e.target !== document.activeElement) {
                      // To prevent doing anything when it's from a blur event.
                      return;
                  }
                  // Do NOT e.preventDefault() here. It will prevent pasting.
                  clearInputTimeout();
                  // zero-timeout necessary here because at the time of event handler execution the
                  // pasted content is not in the input field yet. Shouldn’t make any difference for
                  // change, though.
                  setTimeout(search, 0);
              };
              search_input.onpaste = search_input.onchange;
  
              var selectCrate = document.getElementById("crate-search");
              if (selectCrate) {
                  selectCrate.onchange = function() {
                      updateLocalStorage("rustdoc-saved-filter-crate", selectCrate.value);
                      search(undefined, true);
                  };
              }
  
              // Push and pop states are used to add search results to the browser
              // history.
              if (browserSupportsHistoryApi()) {
                  // Store the previous <title> so we can revert back to it later.
                  var previousTitle = document.title;
  
                  window.addEventListener("popstate", function(e) {
                      var params = getQueryStringParams();
                      // Revert to the previous title manually since the History
                      // API ignores the title parameter.
                      document.title = previousTitle;
                      // When browsing forward to search results the previous
                      // search will be repeated, so the currentResults are
                      // cleared to ensure the search is successful.
                      currentResults = null;
                      // Synchronize search bar with query string state and
                      // perform the search. This will empty the bar if there's
                      // nothing there, which lets you really go back to a
                      // previous state with nothing in the bar.
                      if (params.search && params.search.length > 0) {
                          search_input.value = params.search;
                          // Some browsers fire "onpopstate" for every page load
                          // (Chrome), while others fire the event only when actually
                          // popping a state (Firefox), which is why search() is
                          // called both here and at the end of the startSearch()
                          // function.
                          search(e);
                      } else {
                          search_input.value = "";
                          // When browsing back from search results the main page
                          // visibility must be reset.
                          hideSearchResults();
                      }
                  });
              }
  
              // This is required in firefox to avoid this problem: Navigating to a search result
              // with the keyboard, hitting enter, and then hitting back would take you back to
              // the doc page, rather than the search that should overlay it.
              // This was an interaction between the back-forward cache and our handlers
              // that try to sync state between the URL and the search input. To work around it,
              // do a small amount of re-init on page show.
              window.onpageshow = function(){
                  var qSearch = getQueryStringParams().search;
                  if (search_input.value === "" && qSearch) {
                      search_input.value = qSearch;
                  }
                  search();
              };
          }
  
          index = buildIndex(rawSearchIndex);
          registerSearchEvents();
          // If there's a search term in the URL, execute the search now.
          if (getQueryStringParams().search) {
              search();
          }
      };
  
      function addSidebarCrates(crates) {
          // Draw a convenient sidebar of known crates if we have a listing
          if (window.rootPath === "../" || window.rootPath === "./") {
              var sidebar = document.getElementsByClassName("sidebar-elems")[0];
              if (sidebar) {
                  var div = document.createElement("div");
                  div.className = "block crate";
                  div.innerHTML = "<h3>Crates</h3>";
                  var ul = document.createElement("ul");
                  div.appendChild(ul);
  
                  for (var i = 0; i < crates.length; ++i) {
                      var klass = "crate";
                      if (window.rootPath !== "./" && crates[i] === window.currentCrate) {
                          klass += " current";
                      }
                      var link = document.createElement("a");
                      link.href = window.rootPath + crates[i] + "/index.html";
                      link.className = klass;
                      link.textContent = crates[i];
  
                      var li = document.createElement("li");
                      li.appendChild(link);
                      ul.appendChild(li);
                  }
                  sidebar.appendChild(div);
              }
          }
      }
  
      // delayed sidebar rendering.
      window.initSidebarItems = function(items) {
          var sidebar = document.getElementsByClassName("sidebar-elems")[0];
          var current = window.sidebarCurrent;
  
          function block(shortty, longty) {
              var filtered = items[shortty];
              if (!filtered) {
                  return;
              }
  
              var div = document.createElement("div");
              div.className = "block " + shortty;
              var h3 = document.createElement("h3");
              h3.textContent = longty;
              div.appendChild(h3);
              var ul = document.createElement("ul");
  
              for (var i = 0, len = filtered.length; i < len; ++i) {
                  var item = filtered[i];
                  var name = item[0];
                  var desc = item[1]; // can be null
  
                  var klass = shortty;
                  if (name === current.name && shortty === current.ty) {
                      klass += " current";
                  }
                  var path;
                  if (shortty === "mod") {
                      path = name + "/index.html";
                  } else {
                      path = shortty + "." + name + ".html";
                  }
                  var link = document.createElement("a");
                  link.href = current.relpath + path;
                  link.title = desc;
                  link.className = klass;
                  link.textContent = name;
                  var li = document.createElement("li");
                  li.appendChild(link);
                  ul.appendChild(li);
              }
              div.appendChild(ul);
              if (sidebar) {
                  sidebar.appendChild(div);
              }
          }
  
          block("primitive", "Primitive Types");
          block("mod", "Modules");
          block("macro", "Macros");
          block("struct", "Structs");
          block("enum", "Enums");
          block("union", "Unions");
          block("constant", "Constants");
          block("static", "Statics");
          block("trait", "Traits");
          block("fn", "Functions");
          block("type", "Type Definitions");
          block("foreigntype", "Foreign Types");
          block("keyword", "Keywords");
          block("traitalias", "Trait Aliases");
      };
  
      window.register_implementors = function(imp) {
          var implementors = document.getElementById("implementors-list");
          var synthetic_implementors = document.getElementById("synthetic-implementors-list");
  
          if (synthetic_implementors) {
              // This `inlined_types` variable is used to avoid having the same implementation
              // showing up twice. For example "String" in the "Sync" doc page.
              //
              // By the way, this is only used by and useful for traits implemented automatically
              // (like "Send" and "Sync").
              var inlined_types = new Set();
              onEachLazy(synthetic_implementors.getElementsByClassName("impl"), function(el) {
                  var aliases = el.getAttribute("aliases");
                  if (!aliases) {
                      return;
                  }
                  aliases.split(",").forEach(function(alias) {
                      inlined_types.add(alias);
                  });
              });
          }
  
          var libs = Object.getOwnPropertyNames(imp);
          for (var i = 0, llength = libs.length; i < llength; ++i) {
              if (libs[i] === window.currentCrate) { continue; }
              var structs = imp[libs[i]];
  
              struct_loop:
              for (var j = 0, slength = structs.length; j < slength; ++j) {
                  var struct = structs[j];
  
                  var list = struct.synthetic ? synthetic_implementors : implementors;
  
                  if (struct.synthetic) {
                      for (var k = 0, stlength = struct.types.length; k < stlength; k++) {
                          if (inlined_types.has(struct.types[k])) {
                              continue struct_loop;
                          }
                          inlined_types.add(struct.types[k]);
                      }
                  }
  
                  var code = document.createElement("code");
                  code.innerHTML = struct.text;
  
                  onEachLazy(code.getElementsByTagName("a"), function(elem) {
                      var href = elem.getAttribute("href");
  
                      if (href && href.indexOf("http") !== 0) {
                          elem.setAttribute("href", window.rootPath + href);
                      }
                  });
  
                  var display = document.createElement("h3");
                  addClass(display, "impl");
                  display.innerHTML = "<span class=\"in-band\"><table class=\"table-display\">" +
                      "<tbody><tr><td><code>" + code.outerHTML + "</code></td><td></td></tr>" +
                      "</tbody></table></span>";
                  list.appendChild(display);
              }
          }
      };
      if (window.pending_implementors) {
          window.register_implementors(window.pending_implementors);
      }
  
      function labelForToggleButton(sectionIsCollapsed) {
          if (sectionIsCollapsed) {
              // button will expand the section
              return "+";
          }
          // button will collapse the section
          // note that this text is also set in the HTML template in ../render/mod.rs
          return "\u2212"; // "\u2212" is "−" minus sign
      }
  
      function onEveryMatchingChild(elem, className, func) {
          if (elem && className && func) {
              var length = elem.childNodes.length;
              var nodes = elem.childNodes;
              for (var i = 0; i < length; ++i) {
                  if (hasClass(nodes[i], className)) {
                      func(nodes[i]);
                  } else {
                      onEveryMatchingChild(nodes[i], className, func);
                  }
              }
          }
      }
  
      function toggleAllDocs(fromAutoCollapse) {
          var innerToggle = document.getElementById(toggleAllDocsId);
          if (!innerToggle) {
              return;
          }
          if (hasClass(innerToggle, "will-expand")) {
              updateLocalStorage("rustdoc-collapse", "false");
              removeClass(innerToggle, "will-expand");
              onEveryMatchingChild(innerToggle, "inner", function(e) {
                  e.innerHTML = labelForToggleButton(false);
              });
              innerToggle.title = "collapse all docs";
              if (fromAutoCollapse !== true) {
                  onEachLazy(document.getElementsByClassName("collapse-toggle"), function(e) {
                      collapseDocs(e, "show");
                  });
              }
          } else {
              updateLocalStorage("rustdoc-collapse", "true");
              addClass(innerToggle, "will-expand");
              onEveryMatchingChild(innerToggle, "inner", function(e) {
                  var parent = e.parentNode;
                  var superParent = null;
  
                  if (parent) {
                      superParent = parent.parentNode;
                  }
                  if (!parent || !superParent || superParent.id !== "main" ||
                      hasClass(parent, "impl") === false) {
                      e.innerHTML = labelForToggleButton(true);
                  }
              });
              innerToggle.title = "expand all docs";
              if (fromAutoCollapse !== true) {
                  onEachLazy(document.getElementsByClassName("collapse-toggle"), function(e) {
                      var parent = e.parentNode;
                      var superParent = null;
  
                      if (parent) {
                          superParent = parent.parentNode;
                      }
                      if (!parent || !superParent || superParent.id !== "main" ||
                          hasClass(parent, "impl") === false) {
                          collapseDocs(e, "hide");
                      }
                  });
              }
          }
      }
  
      function collapseDocs(toggle, mode) {
          if (!toggle || !toggle.parentNode) {
              return;
          }
  
          function adjustToggle(arg) {
              return function(e) {
                  if (hasClass(e, "toggle-label")) {
                      if (arg) {
                          e.style.display = "inline-block";
                      } else {
                          e.style.display = "none";
                      }
                  }
                  if (hasClass(e, "inner")) {
                      e.innerHTML = labelForToggleButton(arg);
                  }
              };
          }
  
          function implHider(addOrRemove, fullHide) {
              return function(n) {
                  var shouldHide =
                      fullHide === true ||
                      hasClass(n, "method") === true ||
                      hasClass(n, "associatedconstant") === true;
                  if (shouldHide === true || hasClass(n, "type") === true) {
                      if (shouldHide === true) {
                          if (addOrRemove) {
                              addClass(n, "hidden-by-impl-hider");
                          } else {
                              removeClass(n, "hidden-by-impl-hider");
                          }
                      }
                      var ns = n.nextElementSibling;
                      while (ns && (hasClass(ns, "docblock") || hasClass(ns, "item-info"))) {
                          if (addOrRemove) {
                              addClass(ns, "hidden-by-impl-hider");
                          } else {
                              removeClass(ns, "hidden-by-impl-hider");
                          }
                          ns = ns.nextElementSibling;
                      }
                  }
              };
          }
  
          var relatedDoc;
          var action = mode;
          if (hasClass(toggle.parentNode, "impl") === false) {
              relatedDoc = toggle.parentNode.nextElementSibling;
              if (hasClass(relatedDoc, "item-info")) {
                  relatedDoc = relatedDoc.nextElementSibling;
              }
              if (hasClass(relatedDoc, "docblock") || hasClass(relatedDoc, "sub-variant")) {
                  if (mode === "toggle") {
                      if (hasClass(relatedDoc, "hidden-by-usual-hider")) {
                          action = "show";
                      } else {
                          action = "hide";
                      }
                  }
                  if (action === "hide") {
                      addClass(relatedDoc, "hidden-by-usual-hider");
                      onEachLazy(toggle.childNodes, adjustToggle(true));
                      addClass(toggle.parentNode, "collapsed");
                  } else if (action === "show") {
                      removeClass(relatedDoc, "hidden-by-usual-hider");
                      removeClass(toggle.parentNode, "collapsed");
                      onEachLazy(toggle.childNodes, adjustToggle(false));
                  }
              }
          } else {
              // we are collapsing the impl block(s).
  
              var parentElem = toggle.parentNode;
              relatedDoc = parentElem;
              var docblock = relatedDoc.nextElementSibling;
  
              while (hasClass(relatedDoc, "impl-items") === false) {
                  relatedDoc = relatedDoc.nextElementSibling;
              }
  
              if (!relatedDoc && hasClass(docblock, "docblock") === false) {
                  return;
              }
  
              // Hide all functions, but not associated types/consts.
  
              if (mode === "toggle") {
                  if (hasClass(relatedDoc, "fns-now-collapsed") ||
                      hasClass(docblock, "hidden-by-impl-hider")) {
                      action = "show";
                  } else {
                      action = "hide";
                  }
              }
  
              var dontApplyBlockRule = toggle.parentNode.parentNode.id !== "main";
              if (action === "show") {
                  removeClass(relatedDoc, "fns-now-collapsed");
                  // Stability/deprecation/portability information is never hidden.
                  if (hasClass(docblock, "item-info") === false) {
                      removeClass(docblock, "hidden-by-usual-hider");
                  }
                  onEachLazy(toggle.childNodes, adjustToggle(false, dontApplyBlockRule));
                  onEachLazy(relatedDoc.childNodes, implHider(false, dontApplyBlockRule));
              } else if (action === "hide") {
                  addClass(relatedDoc, "fns-now-collapsed");
                  // Stability/deprecation/portability information should be shown even when detailed
                  // info is hidden.
                  if (hasClass(docblock, "item-info") === false) {
                      addClass(docblock, "hidden-by-usual-hider");
                  }
                  onEachLazy(toggle.childNodes, adjustToggle(true, dontApplyBlockRule));
                  onEachLazy(relatedDoc.childNodes, implHider(true, dontApplyBlockRule));
              }
          }
      }
  
      function collapser(e, collapse) {
          // inherent impl ids are like "impl" or impl-<number>'.
          // they will never be hidden by default.
          var n = e.parentElement;
          if (n.id.match(/^impl(?:-\d+)?$/) === null) {
              // Automatically minimize all non-inherent impls
              if (collapse || hasClass(n, "impl")) {
                  collapseDocs(e, "hide");
              }
          }
      }
  
      function autoCollapse(collapse) {
          if (collapse) {
              toggleAllDocs(true);
          } else if (getSettingValue("auto-hide-trait-implementations") !== "false") {
              var impl_list = document.getElementById("trait-implementations-list");
  
              if (impl_list !== null) {
                  onEachLazy(impl_list.getElementsByClassName("collapse-toggle"), function(e) {
                      collapser(e, collapse);
                  });
              }
  
              var blanket_list = document.getElementById("blanket-implementations-list");
  
              if (blanket_list !== null) {
                  onEachLazy(blanket_list.getElementsByClassName("collapse-toggle"), function(e) {
                      collapser(e, collapse);
                  });
              }
          }
      }
  
      function insertAfter(newNode, referenceNode) {
          referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
      }
  
      function createSimpleToggle(sectionIsCollapsed) {
          var toggle = document.createElement("a");
          toggle.href = "javascript:void(0)";
          toggle.className = "collapse-toggle";
          toggle.innerHTML = "[<span class=\"inner\">" + labelForToggleButton(sectionIsCollapsed) +
                             "</span>]";
          return toggle;
      }
  
      function createToggle(toggle, otherMessage, fontSize, extraClass, show) {
          var span = document.createElement("span");
          span.className = "toggle-label";
          if (show) {
              span.style.display = "none";
          }
          if (!otherMessage) {
              span.innerHTML = "&nbsp;Expand&nbsp;description";
          } else {
              span.innerHTML = otherMessage;
          }
  
          if (fontSize) {
              span.style.fontSize = fontSize;
          }
  
          var mainToggle = toggle.cloneNode(true);
          mainToggle.appendChild(span);
  
          var wrapper = document.createElement("div");
          wrapper.className = "toggle-wrapper";
          if (!show) {
              addClass(wrapper, "collapsed");
              var inner = mainToggle.getElementsByClassName("inner");
              if (inner && inner.length > 0) {
                  inner[0].innerHTML = "+";
              }
          }
          if (extraClass) {
              addClass(wrapper, extraClass);
          }
          wrapper.appendChild(mainToggle);
          return wrapper;
      }
  
      (function() {
          var toggles = document.getElementById(toggleAllDocsId);
          if (toggles) {
              toggles.onclick = toggleAllDocs;
          }
  
          var toggle = createSimpleToggle(false);
          var hideMethodDocs = getSettingValue("auto-hide-method-docs") === "true";
          var hideImplementors = getSettingValue("auto-collapse-implementors") !== "false";
  
          var func = function(e) {
              var next = e.nextElementSibling;
              if (next && hasClass(next, "item-info")) {
                next = next.nextElementSibling;
              }
              if (!next) {
                  return;
              }
              if (hasClass(next, "docblock")) {
                  var newToggle = toggle.cloneNode(true);
                  insertAfter(newToggle, e.childNodes[e.childNodes.length - 1]);
                  if (hideMethodDocs === true && hasClass(e, "method") === true) {
                      collapseDocs(newToggle, "hide");
                  }
              }
          };
  
          var funcImpl = function(e) {
              var next = e.nextElementSibling;
              if (next && hasClass(next, "item-info")) {
                  next = next.nextElementSibling;
              }
              if (next && hasClass(next, "docblock")) {
                  next = next.nextElementSibling;
              }
              if (!next) {
                  return;
              }
              if (hasClass(e, "impl") &&
                  (next.getElementsByClassName("method").length > 0 ||
                   next.getElementsByClassName("associatedconstant").length > 0)) {
                  var newToggle = toggle.cloneNode(true);
                  insertAfter(newToggle, e.childNodes[e.childNodes.length - 1]);
                  // In case the option "auto-collapse implementors" is not set to false, we collapse
                  // all implementors.
                  if (hideImplementors === true && e.parentNode.id === "implementors-list") {
                      collapseDocs(newToggle, "hide");
                  }
              }
          };
  
          onEachLazy(document.getElementsByClassName("method"), func);
          onEachLazy(document.getElementsByClassName("associatedconstant"), func);
          onEachLazy(document.getElementsByClassName("impl"), funcImpl);
          var impl_call = function() {};
          if (hideMethodDocs === true) {
              impl_call = function(e, newToggle) {
                  if (e.id.match(/^impl(?:-\d+)?$/) === null) {
                      // Automatically minimize all non-inherent impls
                      if (hasClass(e, "impl") === true) {
                          collapseDocs(newToggle, "hide");
                      }
                  }
              };
          }
          var newToggle = document.createElement("a");
          newToggle.href = "javascript:void(0)";
          newToggle.className = "collapse-toggle hidden-default collapsed";
          newToggle.innerHTML = "[<span class=\"inner\">" + labelForToggleButton(true) +
                                "</span>] Show hidden undocumented items";
          function toggleClicked() {
              if (hasClass(this, "collapsed")) {
                  removeClass(this, "collapsed");
                  onEachLazy(this.parentNode.getElementsByClassName("hidden"), function(x) {
                      if (hasClass(x, "content") === false) {
                          removeClass(x, "hidden");
                          addClass(x, "x");
                      }
                  }, true);
                  this.innerHTML = "[<span class=\"inner\">" + labelForToggleButton(false) +
                                   "</span>] Hide undocumented items";
              } else {
                  addClass(this, "collapsed");
                  onEachLazy(this.parentNode.getElementsByClassName("x"), function(x) {
                      if (hasClass(x, "content") === false) {
                          addClass(x, "hidden");
                          removeClass(x, "x");
                      }
                  }, true);
                  this.innerHTML = "[<span class=\"inner\">" + labelForToggleButton(true) +
                                   "</span>] Show hidden undocumented items";
              }
          }
          onEachLazy(document.getElementsByClassName("impl-items"), function(e) {
              onEachLazy(e.getElementsByClassName("associatedconstant"), func);
              // We transform the DOM iterator into a vec of DOM elements to prevent performance
              // issues on webkit browsers.
              var hiddenElems = Array.prototype.slice.call(e.getElementsByClassName("hidden"));
              var needToggle = hiddenElems.some(function(hiddenElem) {
                  return hasClass(hiddenElem, "content") === false &&
                      hasClass(hiddenElem, "docblock") === false;
              });
              if (needToggle === true) {
                  var inner_toggle = newToggle.cloneNode(true);
                  inner_toggle.onclick = toggleClicked;
                  e.insertBefore(inner_toggle, e.firstChild);
                  impl_call(e.previousSibling, inner_toggle);
              }
          });
  
          var currentType = document.getElementsByClassName("type-decl")[0];
          var className = null;
          if (currentType) {
              currentType = currentType.getElementsByClassName("rust")[0];
              if (currentType) {
                  currentType.classList.forEach(function(item) {
                      if (item !== "main") {
                          className = item;
                          return true;
                      }
                  });
              }
          }
          var showItemDeclarations = getSettingValue("auto-hide-" + className);
          if (showItemDeclarations === null) {
              if (className === "enum" || className === "macro") {
                  showItemDeclarations = "false";
              } else if (className === "struct" || className === "union" || className === "trait") {
                  showItemDeclarations = "true";
              } else {
                  // In case we found an unknown type, we just use the "parent" value.
                  showItemDeclarations = getSettingValue("auto-hide-declarations");
              }
          }
          showItemDeclarations = showItemDeclarations === "false";
          function buildToggleWrapper(e) {
              if (hasClass(e, "autohide")) {
                  var wrap = e.previousElementSibling;
                  if (wrap && hasClass(wrap, "toggle-wrapper")) {
                      var inner_toggle = wrap.childNodes[0];
                      var extra = e.childNodes[0].tagName === "H3";
  
                      e.style.display = "none";
                      addClass(wrap, "collapsed");
                      onEachLazy(inner_toggle.getElementsByClassName("inner"), function(e) {
                          e.innerHTML = labelForToggleButton(true);
                      });
                      onEachLazy(inner_toggle.getElementsByClassName("toggle-label"), function(e) {
                          e.style.display = "inline-block";
                          if (extra === true) {
                              e.innerHTML = " Show " + e.childNodes[0].innerHTML;
                          }
                      });
                  }
              }
              if (e.parentNode.id === "main") {
                  var otherMessage = "";
                  var fontSize;
                  var extraClass;
  
                  if (hasClass(e, "type-decl")) {
                      fontSize = "20px";
                      otherMessage = "&nbsp;Show&nbsp;declaration";
                      if (showItemDeclarations === false) {
                          extraClass = "collapsed";
                      }
                  } else if (hasClass(e, "sub-variant")) {
                      otherMessage = "&nbsp;Show&nbsp;fields";
                  } else if (hasClass(e, "non-exhaustive")) {
                      otherMessage = "&nbsp;This&nbsp;";
                      if (hasClass(e, "non-exhaustive-struct")) {
                          otherMessage += "struct";
                      } else if (hasClass(e, "non-exhaustive-enum")) {
                          otherMessage += "enum";
                      } else if (hasClass(e, "non-exhaustive-variant")) {
                          otherMessage += "enum variant";
                      } else if (hasClass(e, "non-exhaustive-type")) {
                          otherMessage += "type";
                      }
                      otherMessage += "&nbsp;is&nbsp;marked&nbsp;as&nbsp;non-exhaustive";
                  } else if (hasClass(e.childNodes[0], "impl-items")) {
                      extraClass = "marg-left";
                  }
  
                  e.parentNode.insertBefore(
                      createToggle(
                          toggle,
                          otherMessage,
                          fontSize,
                          extraClass,
                          hasClass(e, "type-decl") === false || showItemDeclarations === true),
                      e);
                  if (hasClass(e, "type-decl") === true && showItemDeclarations === true) {
                      collapseDocs(e.previousSibling.childNodes[0], "toggle");
                  }
                  if (hasClass(e, "non-exhaustive") === true) {
                      collapseDocs(e.previousSibling.childNodes[0], "toggle");
                  }
              }
          }
  
          onEachLazy(document.getElementsByClassName("docblock"), buildToggleWrapper);
          onEachLazy(document.getElementsByClassName("sub-variant"), buildToggleWrapper);
  
          autoCollapse(getSettingValue("collapse") === "true");
  
          var pageId = getPageId();
          if (pageId !== null) {
              expandSection(pageId);
          }
      }());
  
      function createToggleWrapper(tog) {
          var span = document.createElement("span");
          span.className = "toggle-label";
          span.style.display = "none";
          span.innerHTML = "&nbsp;Expand&nbsp;attributes";
          tog.appendChild(span);
  
          var wrapper = document.createElement("div");
          wrapper.className = "toggle-wrapper toggle-attributes";
          wrapper.appendChild(tog);
          return wrapper;
      }
  
      (function() {
          // To avoid checking on "rustdoc-item-attributes" value on every loop...
          var itemAttributesFunc = function() {};
          if (getSettingValue("auto-hide-attributes") !== "false") {
              itemAttributesFunc = function(x) {
                  collapseDocs(x.previousSibling.childNodes[0], "toggle");
              };
          }
          var attributesToggle = createToggleWrapper(createSimpleToggle(false));
          onEachLazy(main.getElementsByClassName("attributes"), function(i_e) {
              var attr_tog = attributesToggle.cloneNode(true);
              if (hasClass(i_e, "top-attr") === true) {
                  addClass(attr_tog, "top-attr");
              }
              i_e.parentNode.insertBefore(attr_tog, i_e);
              itemAttributesFunc(i_e);
          });
      }());
  
      (function() {
          // To avoid checking on "rustdoc-line-numbers" value on every loop...
          var lineNumbersFunc = function() {};
          if (getSettingValue("line-numbers") === "true") {
              lineNumbersFunc = function(x) {
                  var count = x.textContent.split("\n").length;
                  var elems = [];
                  for (var i = 0; i < count; ++i) {
                      elems.push(i + 1);
                  }
                  var node = document.createElement("pre");
                  addClass(node, "line-number");
                  node.innerHTML = elems.join("\n");
                  x.parentNode.insertBefore(node, x);
              };
          }
          onEachLazy(document.getElementsByClassName("rust-example-rendered"), function(e) {
              if (hasClass(e, "compile_fail")) {
                  e.addEventListener("mouseover", function() {
                      this.parentElement.previousElementSibling.childNodes[0].style.color = "#f00";
                  });
                  e.addEventListener("mouseout", function() {
                      this.parentElement.previousElementSibling.childNodes[0].style.color = "";
                  });
              } else if (hasClass(e, "ignore")) {
                  e.addEventListener("mouseover", function() {
                      this.parentElement.previousElementSibling.childNodes[0].style.color = "#ff9200";
                  });
                  e.addEventListener("mouseout", function() {
                      this.parentElement.previousElementSibling.childNodes[0].style.color = "";
                  });
              }
              lineNumbersFunc(e);
          });
      }());
  
      onEachLazy(document.getElementsByClassName("notable-traits"), function(e) {
          e.onclick = function() {
              this.getElementsByClassName('notable-traits-tooltiptext')[0]
                  .classList.toggle("force-tooltip");
          };
      });
  
      // In the search display, allows to switch between tabs.
      function printTab(nb) {
          if (nb === 0 || nb === 1 || nb === 2) {
              currentTab = nb;
          }
          var nb_copy = nb;
          onEachLazy(document.getElementById("titles").childNodes, function(elem) {
              if (nb_copy === 0) {
                  addClass(elem, "selected");
              } else {
                  removeClass(elem, "selected");
              }
              nb_copy -= 1;
          });
          onEachLazy(document.getElementById("results").childNodes, function(elem) {
              if (nb === 0) {
                  elem.style.display = "";
              } else {
                  elem.style.display = "none";
              }
              nb -= 1;
          });
      }
  
      function putBackSearch(search_input) {
          var search = getSearchElement();
          if (search_input.value !== "" && hasClass(search, "hidden")) {
              showSearchResults(search);
              if (browserSupportsHistoryApi()) {
                  var extra = "?search=" + encodeURIComponent(search_input.value);
                  history.replaceState(search_input.value, "",
                      getNakedUrl() + extra + window.location.hash);
              }
              document.title = searchTitle;
          }
      }
  
      function getSearchLoadingText() {
          return "Loading search results...";
      }
  
      if (search_input) {
          search_input.onfocus = function() {
              putBackSearch(this);
          };
      }
  
      var params = getQueryStringParams();
      if (params && params.search) {
          var search = getSearchElement();
          search.innerHTML = "<h3 style=\"text-align: center;\">" + getSearchLoadingText() + "</h3>";
          showSearchResults(search);
      }
  
      var sidebar_menu = document.getElementsByClassName("sidebar-menu")[0];
      if (sidebar_menu) {
          sidebar_menu.onclick = function() {
              var sidebar = document.getElementsByClassName("sidebar")[0];
              if (hasClass(sidebar, "mobile") === true) {
                  hideSidebar();
              } else {
                  showSidebar();
              }
          };
      }
  
      if (main) {
          onEachLazy(main.getElementsByClassName("loading-content"), function(e) {
              e.remove();
          });
          onEachLazy(main.childNodes, function(e) {
              // Unhide the actual content once loading is complete. Headers get
              // flex treatment for their horizontal layout, divs get block treatment
              // for vertical layout (column-oriented flex layout for divs caused
              // errors in mobile browsers).
              if (e.tagName === "H2" || e.tagName === "H3") {
                  var nextTagName = e.nextElementSibling.tagName;
                  if (nextTagName == "H2" || nextTagName == "H3") {
                      e.nextElementSibling.style.display = "flex";
                  } else {
                      e.nextElementSibling.style.display = "block";
                  }
              }
          });
      }
  
      function addSearchOptions(crates) {
          var elem = document.getElementById("crate-search");
  
          if (!elem) {
              return;
          }
          var savedCrate = getSettingValue("saved-filter-crate");
          for (var i = 0, len = crates.length; i < len; ++i) {
              var option = document.createElement("option");
              option.value = crates[i];
              option.innerText = crates[i];
              elem.appendChild(option);
              // Set the crate filter from saved storage, if the current page has the saved crate
              // filter.
              //
              // If not, ignore the crate filter -- we want to support filtering for crates on sites
              // like doc.rust-lang.org where the crates may differ from page to page while on the
              // same domain.
              if (crates[i] === savedCrate) {
                  elem.value = savedCrate;
              }
          }
      };
  
      function buildHelperPopup() {
          var popup = document.createElement("aside");
          addClass(popup, "hidden");
          popup.id = "help";
  
          var book_info = document.createElement("span");
          book_info.innerHTML = "You can find more information in \
              <a href=\"https://doc.rust-lang.org/rustdoc/\">the rustdoc book</a>.";
  
          var container = document.createElement("div");
          var shortcuts = [
              ["?", "Show this help dialog"],
              ["S", "Focus the search field"],
              ["T", "Focus the theme picker menu"],
              ["↑", "Move up in search results"],
              ["↓", "Move down in search results"],
              ["ctrl + ↑ / ↓", "Switch result tab"],
              ["&#9166;", "Go to active search result"],
              ["+", "Expand all sections"],
              ["-", "Collapse all sections"],
          ].map(function(x) {
              return "<dt>" +
                  x[0].split(" ")
                      .map(function(y, index) {
                          return (index & 1) === 0 ? "<kbd>" + y + "</kbd>" : " " + y + " ";
                      })
                      .join("") + "</dt><dd>" + x[1] + "</dd>";
          }).join("");
          var div_shortcuts = document.createElement("div");
          addClass(div_shortcuts, "shortcuts");
          div_shortcuts.innerHTML = "<h2>Keyboard Shortcuts</h2><dl>" + shortcuts + "</dl></div>";
  
          var infos = [
              "Prefix searches with a type followed by a colon (e.g., <code>fn:</code>) to \
               restrict the search to a given item kind.",
              "Accepted kinds are: <code>fn</code>, <code>mod</code>, <code>struct</code>, \
               <code>enum</code>, <code>trait</code>, <code>type</code>, <code>macro</code>, \
               and <code>const</code>.",
              "Search functions by type signature (e.g., <code>vec -&gt; usize</code> or \
               <code>* -&gt; vec</code>)",
              "Search multiple things at once by splitting your query with comma (e.g., \
               <code>str,u8</code> or <code>String,struct:Vec,test</code>)",
              "You can look for items with an exact name by putting double quotes around \
               your request: <code>\"string\"</code>",
              "Look for items inside another one by searching for a path: <code>vec::Vec</code>",
          ].map(function(x) {
              return "<p>" + x + "</p>";
          }).join("");
          var div_infos = document.createElement("div");
          addClass(div_infos, "infos");
          div_infos.innerHTML = "<h2>Search Tricks</h2>" + infos;
  
          container.appendChild(book_info);
          container.appendChild(div_shortcuts);
          container.appendChild(div_infos);
  
          popup.appendChild(container);
          insertAfter(popup, getSearchElement());
          // So that it's only built once and then it'll do nothing when called!
          buildHelperPopup = function() {};
      }
  
      function loadScript(url) {
          var script = document.createElement('script');
          script.src = url;
          document.head.append(script);
      }
  
      function setupSearchLoader() {
          var searchLoaded = false;
          function loadSearch() {
              if (!searchLoaded) {
                  searchLoaded = true;
                  loadScript(window.searchJS);
              }
          }
  
          // `crates{version}.js` should always be loaded before this script, so we can use it safely.
          addSearchOptions(window.ALL_CRATES);
          addSidebarCrates(window.ALL_CRATES);
  
          search_input.addEventListener("focus", function() {
              search_input.origPlaceholder = search_input.placeholder;
              search_input.placeholder = "Type your search here.";
              loadSearch();
          });
          search_input.addEventListener("blur", function() {
              search_input.placeholder = search_input.origPlaceholder;
          });
          search_input.removeAttribute('disabled');
  
          var crateSearchDropDown = document.getElementById("crate-search");
          // `crateSearchDropDown` can be null in case there is only crate because in that case, the
          // crate filter dropdown is removed.
          if (crateSearchDropDown) {
              crateSearchDropDown.addEventListener("focus", loadSearch);
          }
          var params = getQueryStringParams();
          if (params.search !== undefined) {
              loadSearch();
          }
      }
  
      onHashChange(null);
      window.onhashchange = onHashChange;
      setupSearchLoader();
  }());
  