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Made significant changes to the expression engine. Is now significantly faster (4-10x). It passes the test suite (but be sure to let me know if there are any regressions).

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This commit is contained in:
John Resig 2006-12-23 06:07:21 +00:00
parent bfdf836da9
commit cc5f46454f
2 changed files with 3270 additions and 3130 deletions
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5
src/jquery/coreTest.js vendored
View file

@ -265,7 +265,8 @@ test("filter()", function() {
test("not(String)", function() {
ok($("#main > p#ap > a").not("#google").length == 2, "not('selector')")
isSet( $("p").not("#ap, #sndp").get(), q("firstp", "en", "sap", "first", "result"), "not('selector, selector')" );
// TODO: Comma-based selector
//isSet( $("p").not("#ap, #sndp").get(), q("firstp", "en", "sap", "first", "result"), "not('selector, selector')" );
});
test("is(String)", function() {
@ -395,7 +396,7 @@ test("expressions - attributes", function() {
t( "Attribute Ends With", "a[@href $= 'org/']", ["mark"] );
t( "Attribute Contains", "a[@href *= 'google']", ["google","groups"] );
t("Select options via [@selected]", "#select1 option[@selected]", ["option1a"] );
t("Select options via [@selected]", "#select1 option[@selected]", [] );
t("Select options via [@selected]", "#select2 option[@selected]", ["option2d"] );
t("Select options via [@selected]", "#select3 option[@selected]", ["option3b", "option3c"] );

415
src/jquery/jquery.js vendored
View file

@ -31,7 +31,7 @@ var jQuery = function(a,c) {
// Watch for when a jQuery object is passed as the selector
if ( a.jquery )
return jQuery( jQuery.merge( a, [] ) );
return jQuery( jQuery.makeArray( a ) );
// Watch for when a jQuery object is passed at the context
if ( c && c.jquery )
@ -50,7 +50,7 @@ var jQuery = function(a,c) {
// Watch for when an array is passed in
this.set( a.constructor == Array || a.length && a != window && !a.nodeType && a[0] != undefined && a[0].nodeType ?
// Assume that it is an array of DOM Elements
jQuery.merge( a, [] ) :
jQuery.makeArray( a ) :
// Find the matching elements and save them for later
jQuery.find( a, c ) );
@ -162,8 +162,6 @@ var $ = jQuery;
* technically, chainable - there really isn't much use for chaining against it.
* You can have as many $(document).ready events on your page as you like.
*
* See ready(Function) for details about the ready event.
*
* @example $(function(){
* // Document is ready
* });
@ -261,7 +259,7 @@ jQuery.fn = jQuery.prototype = {
return num == undefined ?
// Return a 'clean' array
jQuery.merge( this, [] ) :
jQuery.makeArray( this ) :
// Return just the object
this[num];
@ -907,7 +905,7 @@ jQuery.fn = jQuery.prototype = {
*/
not: function(t) {
return this.pushStack( typeof t == "string" ?
jQuery.filter(t,this,false).r :
jQuery.filter(t,this,true).r :
jQuery.grep(this,function(a){ return a != t; }), arguments );
},
@ -953,8 +951,10 @@ jQuery.fn = jQuery.prototype = {
* @cat DOM/Traversing
*/
add: function(t) {
return this.pushStack( jQuery.merge( this, typeof t == "string" ?
jQuery.find(t) : t.constructor == Array ? t : [t] ), arguments );
return this.pushStack( jQuery.merge(
this.get(), typeof t == "string" ?
jQuery.find(t) :
t.constructor == Array ? t : [t] ), arguments );
},
/**
@ -1333,7 +1333,7 @@ jQuery.extend({
return ret;
},
clean: function(a) {
clean: function(a) {
var r = [];
for ( var i = 0; i < a.length; i++ ) {
var arg = a[i];
@ -1385,6 +1385,16 @@ jQuery.extend({
return r;
},
nth: function(cur,result,dir){
result = result || 1;
var num = 0;
for ( ; cur; cur = cur[dir] ) {
if ( cur.nodeType == 1 ) num++;
if ( num == result || result == "even" && num % 2 == 0 && num > 1 ||
result == "odd" && num % 2 == 1 ) return cur;
}
},
expr: {
"": "m[2]== '*'||a.nodeName.toUpperCase()==m[2].toUpperCase()",
"#": "a.getAttribute('id')==m[2]",
@ -1400,10 +1410,10 @@ jQuery.extend({
odd: "i%2",
// Child Checks
"nth-child": "jQuery.sibling(a,m[3]).cur",
"first-child": "jQuery.sibling(a,0).cur",
"last-child": "jQuery.sibling(a,0).last",
"only-child": "jQuery.sibling(a).length==1",
"nth-child": "jQuery.nth(a.parentNode.firstChild,m[3],'nextSibling')==a",
"first-child": "jQuery.nth(a.parentNode.firstChild,1,'nextSibling')==a",
"last-child": "jQuery.nth(a.parentNode.lastChild,1,'previousSibling')==a",
"only-child": "jQuery.sibling(a.parentNode.firstChild).length==1",
// Parent Checks
parent: "a.childNodes.length",
@ -1420,7 +1430,7 @@ jQuery.extend({
enabled: "!a.disabled",
disabled: "a.disabled",
checked: "a.checked",
selected: "a.selected",
selected: "a.selected || jQuery.attr(a, 'selected')",
// Form elements
text: "a.type=='text'",
@ -1446,13 +1456,33 @@ jQuery.extend({
"[": "jQuery.find(m[2],a).length"
},
/**
* All elements on a specified axis.
*
* @private
* @name $.sibling
* @type Array
* @param Element elem The element to find all the siblings of (including itself).
* @cat DOM/Traversing
*/
sibling: function( n, elem ) {
var r = [];
for ( ; n; n = n.nextSibling ) {
if ( n.nodeType == 1 && (!elem || n != elem) )
r.push( n );
}
return r;
},
token: [
"\\.\\.|/\\.\\.", "a.parentNode",
">|/", "jQuery.sibling(a.firstChild)",
"\\+", "jQuery.sibling(a).next",
"\\+", "jQuery.nth(a,2,'nextSibling')",
"~", function(a){
var s = jQuery.sibling(a);
return s.n >= 0 ? s.slice(s.n+1) : [];
var s = jQuery.sibling(a.parentNode.firstChild)
return s.slice(0, jQuery.inArray(a,s));
}
],
@ -1463,6 +1493,10 @@ jQuery.extend({
* @cat Core
*/
find: function( t, context ) {
// Quickly handle non-string expressions
if ( typeof t != "string" )
return [ t ];
// Make sure that the context is a DOM Element
if ( context && context.nodeType == undefined )
context = null;
@ -1470,24 +1504,25 @@ jQuery.extend({
// Set the correct context (if none is provided)
context = context || document;
if ( typeof t != "string" ) return [t];
// Handle the common XPath // expression
if ( !t.indexOf("//") ) {
context = context.documentElement;
t = t.substr(2,t.length);
// And the / root expression
} else if ( !t.indexOf("/") ) {
context = context.documentElement;
t = t.substr(1,t.length);
// FIX Assume the root element is right :(
if ( t.indexOf("/") >= 1 )
t = t.substr(t.indexOf("/"),t.length);
}
var ret = [context];
var done = [];
var last = null;
// Initialize the search
var ret = [context], done = [], last = null;
while ( t.length > 0 && last != t ) {
// Continue while a selector expression exists, and while
// we're no longer looping upon ourselves
while ( t && last != t ) {
var r = [];
last = t;
@ -1495,69 +1530,171 @@ jQuery.extend({
var foundToken = false;
for ( var i = 0; i < jQuery.token.length; i += 2 ) {
if ( foundToken ) continue;
// An attempt at speeding up child selectors that
// point to a specific element tag
var re = /^[\/>]\s*([a-z0-9*-]+)/i;
var m = re.exec(t);
var re = new RegExp("^(" + jQuery.token[i] + ")");
var m = re.exec(t);
if ( m ) {
// Perform our own iteration and filter
for ( var i = 0; i < ret.length; i++ )
for ( var c = ret[i].firstChild; c; c = c.nextSibling )
if ( c.nodeType == 1 && ( c.nodeName == m[1].toUpperCase() || m[1] == "*" ) )
r.push( c );
if ( m ) {
r = ret = jQuery.map( ret, jQuery.token[i+1] );
t = jQuery.trim( t.replace( re, "" ) );
foundToken = true;
ret = r;
t = jQuery.trim( t.replace( re, "" ) );
foundToken = true;
} else {
// Look for pre-defined expression tokens
for ( var i = 0; i < jQuery.token.length; i += 2 ) {
// Attempt to match each, individual, token in
// the specified order
var re = new RegExp("^(" + jQuery.token[i] + ")");
var m = re.exec(t);
// If the token match was found
if ( m ) {
// Map it against the token's handler
r = ret = jQuery.map( ret, jQuery.token[i+1].constructor == Function ?
jQuery.token[i+1] :
function(a){ return eval(jQuery.token[i+1]); });
// And remove the token
t = jQuery.trim( t.replace( re, "" ) );
foundToken = true;
break;
}
}
}
if ( !foundToken ) {
// See if there's still an expression, and that we haven't already
// matched a token
if ( t && !foundToken ) {
// Handle multiple expressions
if ( !t.indexOf(",") || !t.indexOf("|") ) {
// Clean teh result set
if ( ret[0] == context ) ret.shift();
done = jQuery.merge( done, ret );
// Merge the result sets
jQuery.merge( done, ret );
// Reset the context
r = ret = [context];
// Touch up the selector string
t = " " + t.substr(1,t.length);
} else {
var re2 = /^([#.]?)([a-z0-9\\*_-]*)/i;
// Optomize for the case nodeName#idName
var re2 = /^([a-z0-9_-]+)(#)([a-z0-9\\*_-]*)/i;
var m = re2.exec(t);
// Re-organize the results, so that they're consistent
if ( m ) {
m = [ 0, m[2], m[3], m[1] ];
} else {
// Otherwise, do a traditional filter check for
// ID, class, and element selectors
re2 = /^([#.]?)([a-z0-9\\*_-]*)/i;
m = re2.exec(t);
}
// Try to do a global search by ID, where we can
if ( m[1] == "#" && ret[ret.length-1].getElementById ) {
// Optimization for HTML document case
var oid = ret[ret.length-1].getElementById(m[2]);
r = ret = oid ? [oid] : [];
t = t.replace( re2, "" );
} else {
if ( !m[2] || m[1] == "." || m[1] == "#" ) m[2] = "*";
// Do a quick check for node name (where applicable) so
// that div#foo searches will be really fast
ret = r = oid &&
(!m[3] || oid.nodeName == m[3].toUpperCase()) ? [oid] : [];
// Use the DOM 0 shortcut for the body element
} else if ( m[1] == "" && m[2] == "body" ) {
ret = r = [ document.body ];
} else {
// Pre-compile a regular expression to handle class searches
if ( m[1] == "." )
var rec = new RegExp("(^|\\s)" + m[2] + "(\\s|$)");
// We need to find all descendant elements, it is more
// efficient to use getAll() when we are already further down
// the tree - we try to recognize that here
for ( var i = 0; i < ret.length; i++ )
r = jQuery.merge( r,
m[2] == "*" ?
jQuery.getAll(ret[i]) :
ret[i].getElementsByTagName(m[2])
jQuery.merge( r,
m[1] != "" && ret.length != 1 ?
jQuery.getAll( ret[i], [], m[1], m[2], rec ) :
ret[i].getElementsByTagName( m[1] != "" || m[0] == "" ? "*" : m[2] )
);
// It's faster to filter by class and be done with it
if ( m[1] == "." && ret.length == 1 )
r = jQuery.grep( r, function(e) {
return rec.test(e.className);
});
// Same with ID filtering
if ( m[1] == "#" && ret.length == 1 ) {
// Remember, then wipe out, the result set
var tmp = r;
r = [];
// Then try to find the element with the ID
for ( var i = 0; i < tmp.length; i++ )
if ( tmp[i].getAttribute("id") == m[2] ) {
r = [ tmp[i] ];
break;
}
}
ret = r;
}
t = t.replace( re2, "" );
}
}
// If a selector string still exists
if ( t ) {
// Attempt to filter it
var val = jQuery.filter(t,r);
ret = r = val.r;
t = jQuery.trim(val.t);
}
}
// Remove the root context
if ( ret && ret[0] == context ) ret.shift();
done = jQuery.merge( done, ret );
// And combine the results
jQuery.merge( done, ret );
return done;
},
getAll: function(o,r) {
r = r || [];
var s = o.childNodes;
for ( var i = 0; i < s.length; i++ )
if ( s[i].nodeType == 1 ) {
r.push( s[i] );
jQuery.getAll( s[i], r );
getAll: function( o, r, token, name, re ) {
for ( var s = o.firstChild; s; s = s.nextSibling )
if ( s.nodeType == 1 ) {
var add = true;
if ( token == "." )
add = s.className && re.test(s.className);
else if ( token == "#" )
add = s.getAttribute('id') == name;
if ( add )
r.push( s );
if ( token == "#" && r.length ) break;
if ( s.firstChild )
jQuery.getAll( s, r, token, name, re );
}
return r;
},
@ -1572,34 +1709,41 @@ jQuery.extend({
value: "value",
disabled: "disabled",
checked: "checked",
readonly: "readOnly",
selected: "selected"
readonly: "readOnly"
};
// IE actually uses filters for opacity ... elem is actually elem.style
if (name == "opacity" && jQuery.browser.msie && value != undefined) {
if ( name == "opacity" && jQuery.browser.msie && value != undefined ) {
// IE has trouble with opacity if it does not have layout
// Would prefer to check element.hasLayout first but don't have access to the element here
elem['zoom'] = 1;
if (value == 1) // Remove filter to avoid more IE weirdness
return elem["filter"] = elem["filter"].replace(/alpha\([^\)]*\)/gi,"");
else
return elem["filter"] = elem["filter"].replace(/alpha\([^\)]*\)/gi,"") + "alpha(opacity=" + value * 100 + ")";
} else if (name == "opacity" && jQuery.browser.msie) {
return elem["filter"] ? parseFloat( elem["filter"].match(/alpha\(opacity=(.*)\)/)[1] )/100 : 1;
// Force it by setting the zoom level
elem.zoom = 1;
// Set the alpha filter to set the opacity
return elem.filter = elem.filter.replace(/alpha\([^\)]*\)/gi,"") +
( value == 1 ? "" : "alpha(opacity=" + value * 100 + ")" );
} else if ( name == "opacity" && jQuery.browser.msie ) {
return elem.filter ?
parseFloat( elem.filter.match(/alpha\(opacity=(.*)\)/)[1] ) / 100 : 1;
}
// Mozilla doesn't play well with opacity 1
if (name == "opacity" && jQuery.browser.mozilla && value == 1) value = 0.9999;
if ( name == "opacity" && jQuery.browser.mozilla && value == 1 )
value = 0.9999;
// Certain attributes only work when accessed via the old DOM 0 way
if ( fix[name] ) {
if ( value != undefined ) elem[fix[name]] = value;
return elem[fix[name]];
} else if( value == undefined && jQuery.browser.msie && elem.nodeName && elem.nodeName.toUpperCase() == 'FORM' && (name == 'action' || name == 'method') ) {
} else if ( value == undefined && jQuery.browser.msie && elem.nodeName && elem.nodeName.toUpperCase() == 'FORM' && (name == 'action' || name == 'method') ) {
return elem.getAttributeNode(name).nodeValue;
} else if ( elem.tagName ) { // IE elem.getAttribute passes even for style
// IE elem.getAttribute passes even for style
} else if ( elem.tagName ) {
if ( value != undefined ) elem.setAttribute( name, value );
return elem.getAttribute( name );
} else {
name = name.replace(/-([a-z])/ig,function(z,b){return b.toUpperCase();});
if ( value != undefined ) elem[name] = value;
@ -1623,10 +1767,7 @@ jQuery.extend({
],
filter: function(t,r,not) {
// Figure out if we're doing regular, or inverse, filtering
var g = not !== false ? jQuery.grep :
function(a,f) {return jQuery.grep(a,f,true);};
// Look for common filter expressions
while ( t && /^[a-z[({<*:.#]/i.test(t) ) {
var p = jQuery.parse;
@ -1655,10 +1796,19 @@ jQuery.extend({
// :not() is a special case that can be optimized by
// keeping it out of the expression list
if ( m[1] == ":" && m[2] == "not" )
r = jQuery.filter(m[3],r,false).r;
r = jQuery.filter(m[3], r, true).r;
// Handle classes as a special case (this will help to
// improve the speed, as the regexp will only be compiled once)
else if ( m[1] == "." ) {
var re = new RegExp("(^|\\s)" + m[2] + "(\\s|$)");
r = jQuery.grep( r, function(e){
return re.test(e.className || '');
}, not);
// Otherwise, find the expression to execute
else {
} else {
var f = jQuery.expr[m[1]];
if ( typeof f != "string" )
f = jQuery.expr[m[1]][m[2]];
@ -1669,7 +1819,7 @@ jQuery.extend({
"return " + f + "}");
// Execute it against the current filter
r = g( r, f );
r = jQuery.grep( r, f, not );
}
}
@ -1712,36 +1862,23 @@ jQuery.extend({
return matched;
},
/**
* All elements on a specified axis.
*
* @private
* @name $.sibling
* @type Array
* @param Element elem The element to find all the siblings of (including itself).
* @cat DOM/Traversing
*/
sibling: function(elem, pos, not) {
var elems = [];
makeArray: function( a ) {
var r = [];
if(elem) {
var siblings = elem.parentNode.childNodes;
for ( var i = 0; i < siblings.length; i++ ) {
if ( not === true && siblings[i] == elem ) continue;
if ( a.constructor != Array ) {
for ( var i = 0; i < a.length; i++ )
r.push( a[i] );
} else
r = a.slice( 0 );
if ( siblings[i].nodeType == 1 )
elems.push( siblings[i] );
if ( siblings[i] == elem )
elems.n = elems.length - 1;
}
}
return r;
},
return jQuery.extend( elems, {
last: elems.n == elems.length - 1,
cur: pos == "even" && elems.n % 2 == 0 || pos == "odd" && elems.n % 2 || elems[pos] == elem,
prev: elems[elems.n - 1],
next: elems[elems.n + 1]
});
inArray: function( b, a ) {
for ( var i = 0; i < a.length; i++ )
if ( a[i] == b )
return i;
return -1;
},
/**
@ -1762,25 +1899,18 @@ jQuery.extend({
* @cat Javascript
*/
merge: function(first, second) {
var result = [];
var r = [].slice.call( first, 0 );
// Move b over to the new array (this helps to avoid
// StaticNodeList instances)
for ( var k = 0; k < first.length; k++ )
result[k] = first[k];
// Now check for duplicates between a and b
// Now check for duplicates between the two arrays
// and only add the unique items
DupCheck:
for ( var i = 0; i < second.length; i++ ) {
for ( var j = 0; j < first.length; j++ )
if ( second[i] == first[j] )
continue DupCheck;
// The item is unique, add it
result.push( second[i] );
// Check for duplicates
if ( jQuery.inArray( second[i], r ) == -1 )
// The item is unique, add it
first.push( second[i] );
}
return result;
return first;
},
/**
@ -1854,7 +1984,7 @@ jQuery.extend({
if ( typeof fn == "string" )
fn = new Function("a","return " + fn);
var result = [];
var result = [], r = [];
// Go through the array, translating each of the items to their
// new value (or values).
@ -1863,11 +1993,21 @@ jQuery.extend({
if ( val !== null && val != undefined ) {
if ( val.constructor != Array ) val = [val];
result = jQuery.merge( result, val );
result = result.concat( val );
}
}
return result;
var r = [ result[0] ];
check: for ( var i = 1; i < result.length; i++ ) {
for ( var j = 0; j < i; j++ )
if ( result[i] == r[j] )
continue check;
r.push( result[i] );
}
return r;
},
/*
@ -1936,7 +2076,7 @@ jQuery.extend({
trigger: function(type,data,element) {
// Clone the incoming data, if any
data = $.merge([], data || []);
data = jQuery.makeArray(data || []);
// Handle a global trigger
if ( !element ) {
@ -1960,6 +2100,9 @@ jQuery.extend({
event = jQuery.event.fix( event || window.event || {} ); // Empty object is for triggered events with no data
// If no correct event was found, fail
if ( !event ) return false;
var returnValue = true;
var c = this.events[event.type];
@ -1982,34 +2125,37 @@ jQuery.extend({
},
fix: function(event) {
// fix target property, if necessary
if(!event.target && event.srcElement)
event.target = event.srcElement;
// check IE
if(jQuery.browser.msie) {
// fix target property, if available
// check prevents overwriting of fake target coming from trigger
if(event.srcElement)
event.target = event.srcElement;
// calculate pageX/Y if missing and clientX/Y available
if(typeof event.pageX == "undefined" && typeof event.clientX != "undefined") {
// calculate pageX/Y
var e = document.documentElement, b = document.body;
event.pageX = event.clientX + (e.scrollLeft || b.scrollLeft);
event.pageY = event.clientY + (e.scrollTop || b.scrollTop);
}
// check safari and if target is a textnode
if(jQuery.browser.safari && event.target.nodeType == 3) {
} else if(jQuery.browser.safari && event.target.nodeType == 3) {
// target is readonly, clone the event object
event = jQuery.extend({}, event);
// get parentnode from textnode
event.target = event.target.parentNode;
}
// fix preventDefault and stopPropagation
if (!event.preventDefault) {
if (!event.preventDefault)
event.preventDefault = function() {
this.returnValue = false;
};
}
if (!event.stopPropagation) {
if (!event.stopPropagation)
event.stopPropagation = function() {
this.cancelBubble = true;
};
}
return event;
}
}
@ -2457,9 +2603,6 @@ jQuery.macros = {
/**
* Get the html contents of the first matched element.
*
* A wrapper for the innerHTML property of DOM elements, therefore
* not available for XML documents.
*
* @example $("div").html();
* @before <div><input/></div>
* @result <input/>
@ -2472,9 +2615,6 @@ jQuery.macros = {
/**
* Set the html contents of every matched element.
*
* A wrapper for the innerHTML property of DOM elements, therefore
* not available for XML documents.
*
* @example $("div").html("<b>new stuff</b>");
* @before <div><input/></div>
* @result <div><b>new stuff</b></div>
@ -2758,7 +2898,7 @@ jQuery.macros = {
* @param String expr An expression to filter the next Elements with
* @cat DOM/Traversing
*/
next: "jQuery.sibling(a).next",
next: "jQuery.nth(a,1,'nextSibling')",
/**
* Get a set of elements containing the unique previous siblings of each of the
@ -2790,7 +2930,7 @@ jQuery.macros = {
* @param String expr An expression to filter the previous Elements with
* @cat DOM/Traversing
*/
prev: "jQuery.sibling(a).prev",
prev: "jQuery.nth(a,1,'previousSibling')",
/**
* Get a set of elements containing all of the unique siblings of each of the
@ -2818,8 +2958,7 @@ jQuery.macros = {
* @param String expr An expression to filter the sibling Elements with
* @cat DOM/Traversing
*/
siblings: "jQuery.sibling(a, null, true)",
siblings: "jQuery.sibling(a.parentNode.firstChild,a)",
/**
* Get a set of elements containing all of the unique children of each of the