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fix memory leak in IE

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brandonaaron committed May 4, 2009
1 parent c6b5926 commit d72b8307de97a715c8916d571278b4bc35be23a6
Showing with 24 additions and 16 deletions.
  1. +24 −16 src/selector.js
@@ -8,7 +8,8 @@

var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|['"][^'"]*['"]|[^[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?/g,
done = 0,
toString = Object.prototype.toString;
toString = Object.prototype.toString,
hasDuplicate = false;

var Sizzle = function(selector, context, results, seed) {
results = results || [];
@@ -17,19 +18,19 @@ var Sizzle = function(selector, context, results, seed) {
if ( context.nodeType !== 1 && context.nodeType !== 9 ) {
return [];
}

if ( !selector || typeof selector !== "string" ) {
return results;
}

var parts = [], m, set, checkSet, check, mode, extra, prune = true, contextXML = isXML(context);

// Reset the position of the chunker regexp (start from head)
chunker.lastIndex = 0;

while ( (m = chunker.exec(selector)) !== null ) {
parts.push( m[1] );

if ( m[2] ) {
extra = RegExp.rightContext;
break;
@@ -158,7 +159,7 @@ Sizzle.find = function(expr, context, isXML){

for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
var type = Expr.order[i], match;

if ( (match = Expr.match[ type ].exec( expr )) ) {
var left = RegExp.leftContext;

@@ -420,7 +421,7 @@ var Expr = Sizzle.selectors = {
},
ATTR: function(match, curLoop, inplace, result, not, isXML){
var name = match[1].replace(/\\/g, "");

if ( !isXML && Expr.attrMap[name] ) {
match[1] = Expr.attrMap[name];
}
@@ -446,7 +447,7 @@ var Expr = Sizzle.selectors = {
} else if ( Expr.match.POS.test( match[0] ) || Expr.match.CHILD.test( match[0] ) ) {
return true;
}

return match;
},
POS: function(match){
@@ -580,20 +581,20 @@ var Expr = Sizzle.selectors = {
if ( first == 1 && last == 0 ) {
return true;
}

var doneName = match[0],
parent = elem.parentNode;

if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) {
var count = 0;
for ( node = parent.firstChild; node; node = node.nextSibling ) {
if ( node.nodeType === 1 ) {
node.nodeIndex = ++count;
}
}
}
parent.sizcache = doneName;
}

var diff = elem.nodeIndex - last;
if ( first == 0 ) {
return diff == 0;
@@ -666,7 +667,7 @@ var makeArray = function(array, results) {
results.push.apply( results, array );
return results;
}

return array;
};

@@ -760,6 +761,7 @@ if ( document.documentElement.compareDocumentPosition ) {
}

root.removeChild( form );
root = form = null; // release memory in IE
})();

(function(){
@@ -800,6 +802,8 @@ if ( document.documentElement.compareDocumentPosition ) {
return elem.getAttribute("href", 2);
};
}

div = null; // release memory in IE
})();

if ( document.querySelectorAll ) (function(){
@@ -811,7 +815,7 @@ if ( document.querySelectorAll ) (function(){
if ( div.querySelectorAll && div.querySelectorAll(".TEST").length === 0 ) {
return;
}

Sizzle = function(query, context, extra, seed){
context = context || document;

@@ -822,13 +826,15 @@ if ( document.querySelectorAll ) (function(){
return makeArray( context.querySelectorAll(query), extra );
} catch(e){}
}

return oldSizzle(query, context, extra, seed);
};

for ( var prop in oldSizzle ) {
Sizzle[ prop ] = oldSizzle[ prop ];
}

div = null; // release memory in IE
})();

if ( document.getElementsByClassName && document.documentElement.getElementsByClassName ) (function(){
@@ -851,6 +857,8 @@ if ( document.getElementsByClassName && document.documentElement.getElementsByCl
return context.getElementsByClassName(match[1]);
}
};

div = null; // release memory in IE
})();

function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
@@ -969,7 +977,7 @@ jQuery.expr = Sizzle.selectors;
jQuery.expr[":"] = jQuery.expr.filters;

Sizzle.selectors.filters.hidden = function(elem){
return elem.offsetWidth === 0 && elem.offsetHeight === 0;
return elem.offsetWidth === 0 || elem.offsetHeight === 0;
};

Sizzle.selectors.filters.visible = function(elem){

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