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Code Issues Activity

Memoize node category with weak map

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Fix horrendous performance of isInline etc.
This commit is contained in:
Neil Jenkins 2016-11-15 11:07:15 +11:00
parent 5d24e3eb4d
commit f46dee1255
5 changed files with 78 additions and 24 deletions
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49
build/squire-raw.js
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@ -47,6 +47,7 @@ var cantFocusEmptyTextNodes = isIElt11 || isWebKit;
var losesSelectionOnBlur = isIElt11;
var canObserveMutations = typeof MutationObserver !== 'undefined';
var canWeakMap = typeof WeakMap !== 'undefined';
// Use [^ \t\r\n] instead of \S so that nbsp does not count as white-space
var notWS = /[^ \t\r\n]/;
@ -201,25 +202,48 @@ function every ( nodeList, fn ) {
// ---
var UNKNOWN = 0;
var INLINE = 1;
var BLOCK = 2;
var CONTAINER = 3;
var nodeCategoryCache = canWeakMap ? new WeakMap() : null;
function isLeaf ( node ) {
return node.nodeType === ELEMENT_NODE &&
!!leafNodeNames[ node.nodeName ];
return node.nodeType === ELEMENT_NODE && !!leafNodeNames[ node.nodeName ];
}
function isInline ( node ) {
return inlineNodeNames.test( node.nodeName ) &&
function getNodeCategory ( node ) {
if ( canWeakMap && nodeCategoryCache.has( node ) ) {
return nodeCategoryCache.get( node );
}
var type = node.nodeType;
var nodeCategory;
if ( type === TEXT_NODE ) {
nodeCategory = INLINE;
} else if ( type !== ELEMENT_NODE && type !== DOCUMENT_FRAGMENT_NODE ) {
nodeCategory = UNKNOWN;
} else if ( !every( node.childNodes, isInline ) ) {
// Malformed HTML can have block tags inside inline tags. Need to treat
// these as containers rather than inline. See #239.
( node.nodeType === TEXT_NODE || every( node.childNodes, isInline ) );
nodeCategory = CONTAINER;
} else if ( inlineNodeNames.test( node.nodeName ) ) {
nodeCategory = INLINE;
} else {
nodeCategory = BLOCK;
}
if ( canWeakMap ) {
nodeCategoryCache.set( node, nodeCategory );
}
return nodeCategory;
}
function isInline ( node ) {
return getNodeCategory( node ) === INLINE;
}
function isBlock ( node ) {
var type = node.nodeType;
return ( type === ELEMENT_NODE || type === DOCUMENT_FRAGMENT_NODE ) &&
!isInline( node ) && every( node.childNodes, isInline );
return getNodeCategory( node ) === BLOCK;
}
function isContainer ( node ) {
var type = node.nodeType;
return ( type === ELEMENT_NODE || type === DOCUMENT_FRAGMENT_NODE ) &&
!isInline( node ) && !isBlock( node );
return getNodeCategory( node ) === CONTAINER;
}
function getBlockWalker ( node, root ) {
@ -3110,6 +3134,9 @@ proto._keyUpDetectChange = function ( event ) {
};
proto._docWasChanged = function () {
if ( canWeakMap ) {
nodeCategoryCache = new WeakMap();
}
if ( this._ignoreAllChanges ) {
return;
}

4
build/squire.js
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File diff suppressed because one or more lines are too long

1
source/Constants.js
View file

@ -43,6 +43,7 @@ var cantFocusEmptyTextNodes = isIElt11 || isWebKit;
var losesSelectionOnBlur = isIElt11;
var canObserveMutations = typeof MutationObserver !== 'undefined';
var canWeakMap = typeof WeakMap !== 'undefined';
// Use [^ \t\r\n] instead of \S so that nbsp does not count as white-space
var notWS = /[^ \t\r\n]/;

3
source/Editor.js
View file

@ -746,6 +746,9 @@ proto._keyUpDetectChange = function ( event ) {
};
proto._docWasChanged = function () {
if ( canWeakMap ) {
nodeCategoryCache = new WeakMap();
}
if ( this._ignoreAllChanges ) {
return;
}

45
source/Node.js
View file

@ -22,25 +22,48 @@ function every ( nodeList, fn ) {
// ---
var UNKNOWN = 0;
var INLINE = 1;
var BLOCK = 2;
var CONTAINER = 3;
var nodeCategoryCache = canWeakMap ? new WeakMap() : null;
function isLeaf ( node ) {
return node.nodeType === ELEMENT_NODE &&
!!leafNodeNames[ node.nodeName ];
return node.nodeType === ELEMENT_NODE && !!leafNodeNames[ node.nodeName ];
}
function isInline ( node ) {
return inlineNodeNames.test( node.nodeName ) &&
function getNodeCategory ( node ) {
if ( canWeakMap && nodeCategoryCache.has( node ) ) {
return nodeCategoryCache.get( node );
}
var type = node.nodeType;
var nodeCategory;
if ( type === TEXT_NODE ) {
nodeCategory = INLINE;
} else if ( type !== ELEMENT_NODE && type !== DOCUMENT_FRAGMENT_NODE ) {
nodeCategory = UNKNOWN;
} else if ( !every( node.childNodes, isInline ) ) {
// Malformed HTML can have block tags inside inline tags. Need to treat
// these as containers rather than inline. See #239.
( node.nodeType === TEXT_NODE || every( node.childNodes, isInline ) );
nodeCategory = CONTAINER;
} else if ( inlineNodeNames.test( node.nodeName ) ) {
nodeCategory = INLINE;
} else {
nodeCategory = BLOCK;
}
if ( canWeakMap ) {
nodeCategoryCache.set( node, nodeCategory );
}
return nodeCategory;
}
function isInline ( node ) {
return getNodeCategory( node ) === INLINE;
}
function isBlock ( node ) {
var type = node.nodeType;
return ( type === ELEMENT_NODE || type === DOCUMENT_FRAGMENT_NODE ) &&
!isInline( node ) && every( node.childNodes, isInline );
return getNodeCategory( node ) === BLOCK;
}
function isContainer ( node ) {
var type = node.nodeType;
return ( type === ELEMENT_NODE || type === DOCUMENT_FRAGMENT_NODE ) &&
!isInline( node ) && !isBlock( node );
return getNodeCategory( node ) === CONTAINER;
}
function getBlockWalker ( node, root ) {