search.js


1

(function(){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 TY_PRIMITIVE=itemTypes.indexOf("primitive");var TY_KEYWORD=itemTypes.indexOf("keyword");function printTab(nb){if(nb===0||nb===1||nb===2){searchState.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){addClass(elem,"active")}else{removeClass(elem,"active")}nb-=1})}function removeEmptyStringsFromArray(x){for(var i=0,len=x.length;i<len;++i){if(x[i]===""){x.splice(i,1);i-=1}}}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=2;var NAME=0;var INPUTS_DATA=0;var OUTPUT_DATA=1;var NO_TYPE_FILTER=-1;var currentResults,index,searchIndex;var ALIASES={};var params=searchState.getQueryStringParams();if(searchState.input.value===""){searchState.input.value=params.search||""}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("::");removeEmptyStringsFromArray(split);function transformResults(results){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;var res=buildHrefAndPath(obj);obj.displayPath=pathSplitter(res[0]);obj.fullPath=obj.displayPath+obj.name;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(hasOwnPropertyRustdoc(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(results.length===0){return[]}results.sort(function(aaa,bbb){var a,b;a=(aaa.word!==val);b=(bbb.word!==val);if(a!==b){return a-b}a=(aaa.lev);b=(bbb.lev);if(a!==b){return a-b}a=(aaa.item.crate!==window.currentCrate);b=(bbb.item.crate!==window.currentCrate);if(a!==b){return a-b}a=aaa.word.length;b=bbb.word.length;if(a!==b){return a-b}a=aaa.word;b=bbb.word;if(a!==b){return(a>b?+1:-1)}a=(aaa.index<0);b=(bbb.index<0);if(a!==b){return a-b}a=aaa.index;b=bbb.index;if(a!==b){return a-b}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}a=(aaa.item.desc==="");b=(bbb.item.desc==="");if(a!==b){return a-b}a=aaa.item.ty;b=bbb.item.ty;if(a!==b){return a-b}a=aaa.item.path;b=bbb.item.path;if(a!==b){return(a>b?+1:-1)}return 0});for(i=0,len=results.length;i<len;++i){result=results[i];if(result.dontValidate){continue}var name=result.item.name.toLowerCase(),path=result.item.path.toLowerCase(),parent=result.item.parent;if(!isType&&!validateResult(name,path,split,parent)){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 checkGenerics(obj,val){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=obj[GENERICS_DATA].length;for(var x=0;x<elength;++x){if(!elems[obj[GENERICS_DATA][x]]){elems[obj[GENERICS_DATA][x]]=0}elems[obj[GENERICS_DATA][x]]+=1}var total=0;var done=0;var vlength=val.generics.length;for(x=0;x<vlength;++x){var lev=MAX_LEV_DISTANCE+1;var firstGeneric=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}function checkType(obj,val,literalSearch){var lev_distance=MAX_LEV_DISTANCE+1;var len,x,firstGeneric;if(obj[NAME]===val.name){if(literalSearch){if(val.generics&&val.generics.length!==0){if(obj.length>GENERICS_DATA&&obj[GENERICS_DATA].length>0){var elems=Object.create(null);len=obj[GENERICS_DATA].length;for(x=0;x<len;++x){if(!elems[obj[GENERICS_DATA][x]]){elems[obj[GENERICS_DATA][x]]=0}elems[obj[GENERICS_DATA][x]]+=1}var allFound=true;len=val.generics.length;for(x=0;x<len;++x){firstGeneric=val.generics[x];if(elems[firstGeneric]){elems[firstGeneric]-=1}else{allFound=false;break}}if(allFound){return true}}return false}return true}else{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 if(literalSearch){if((!val.generics||val.generics.length===0)&&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){lev_distance=Math.ceil((checkGenerics(obj,val)+lev_distance)/2)}else if(obj.length>GENERICS_DATA&&obj[GENERICS_DATA].length>0){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)}}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])){continue}tmp=checkType(tmp,val,literalSearch);if(literalSearch){if(tmp){return true}continue}lev_distance=Math.min(tmp,lev_distance);if(lev_distance===0){return 0}}}return literalSearch?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])){continue}tmp=checkType(tmp,val,literalSearch);if(literalSearch){if(tmp){return true}continue}lev_distance=Math.min(tmp,lev_distance);if(lev_distance===0){return 0}}}return literalSearch?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){ret_lev=Math.min(ret_lev,Math.round(lev_total/clength))}}return ret_lev}function typePassesFilter(filter,type){if(filter<=NO_TYPE_FILTER)return true;if(filter===type)return true;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"}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){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)}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&&results_in_args[fullId]===undefined){results_in_args[fullId]={id:i,index:-1,dontValidate:true,}}if(returned&&results_returned[fullId]===undefined){results_returned[fullId]={id:i,index:-1,dontValidate:true,}}}query.inputs=[val];query.output=val;query.search=val}else if(val.search("->")>-1){var trimmer=function(s){return s.trim()};var parts=val.split("->").map(trimmer);var input=parts[0];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){in_args=false;var is_module=false;if(input==="*"){is_module=true}else{var allFound=true;for(it=0,len=inputs.length;allFound&&it<len;it++){allFound=checkType(type,inputs[it],true)}in_args=allFound}if(in_args){results_in_args[fullId]={id:i,index:-1,dontValidate:true,}}if(returned){results_returned[fullId]={id:i,index:-1,dontValidate:true,}}if(is_module){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;val=val.replace(/_/g,"");var valGenerics=extractGenerics(val);var paths=valLower.split("::");removeEmptyStringsFromArray(paths);val=paths[paths.length-1];var contains=paths.slice(0,paths.length>1?paths.length-1:1);var lev,j;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 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ret={"in_args":sortResults(results_in_args,true),"returned":sortResults(results_returned,true),"others":sortResults(results,false),};handleAliases(ret,query,filterCrates);return ret}function validateResult(name,path,keys,parent){for(var i=0,len=keys.length;i<len;++i){if(!(name.indexOf(keys[i])>-1||path.indexOf(keys[i])>-1||(parent!==undefined&&parent.name!==undefined&&parent.name.toLowerCase().indexOf(keys[i])>-1)||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 nextTab(direction){var next=(searchState.currentTab+direction+3)%searchState.focusedByTab.length;searchState.focusedByTab[searchState.currentTab]=document.activeElement;printTab(next);focusSearchResult()}function focusSearchResult(){var target=searchState.focusedByTab[searchState.currentTab]||document.querySelectorAll(".search-results.active a").item(0)||document.querySelectorAll("#titles > button").item(searchState.currentTab);if(target){target.focus()}}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"){var 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"+extraClass;array.forEach(function(item){if(item.is_alias!==true){if(duplicates[item.fullPath]){return}duplicates[item.fullPath]=true}var name=item.name;var type=itemTypes[item.ty];length+=1;var extra="";if(type==="primitive"){extra=" <i>(primitive type)</i>"}else if(type==="keyword"){extra=" <i>(keyword)</i>"}var link=document.createElement("a");link.className="result-"+type;link.href=item.href;var wrapper=document.createElement("div");var resultName=document.createElement("div");resultName.className="result-name";if(item.is_alias){var alias=document.createElement("span");alias.className="alias";var bold=document.createElement("b");bold.innerText=item.alias;alias.appendChild(bold);alias.insertAdjacentHTML("beforeend","<span class=\"grey\"><i>&nbsp;- see&nbsp;</i></span>");resultName.appendChild(alias)}resultName.insertAdjacentHTML("beforeend",item.displayPath+"<span class=\""+type+"\">"+name+extra+"</span>");wrapper.appendChild(resultName);var 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documentation of crates released on"+" <a href=\"https://crates.io/\">crates.io</a>.</li></ul>"}return[output,length]}function makeTabHeader(tabNb,text,nbElems){if(searchState.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,go_to_first){var search=searchState.outputElement();if(go_to_first||(results.others.length===1&&getSettingValue("go-to-only-result")==="true"&&(!search.firstChild||search.firstChild.innerText!==searchState.loadingText))){var elem=document.createElement("a");elem.href=results.others[0].href;removeClass(elem,"active");document.body.appendChild(elem);elem.click();return}var query=getQuery(searchState.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);var 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