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Code Issues Releases Wiki Activity

Optimise variable prototype chain handling

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With this improvement and 53d229592d I'm measuring a 10-15% performance improvement between v5.2.3 and master using https://github.com/Jermolene/tiddlywiki-performance-test-rig
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jeremy@jermolene.com
2022-09-24 08:28:16 +01:00
parent 0a00da6db9
commit 81ac987484
2 changed files with 8 additions and 4 deletions
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5
core/modules/widgets/importvariables.js
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@@ -39,7 +39,10 @@ Compute the internal state of the widget
ImportVariablesWidget.prototype.execute = function(tiddlerList) {
var widgetPointer = this;
// Got to flush all the accumulated variables
this.variables = new this.variablesConstructor();
this.variables = Object.create(null);
if(this.parentWidget) {
Object.setPrototypeOf(this.variables,this.parentWidget.variables);
}
// Get our parameters
this.filter = this.getAttribute("filter");
// Compute the filter

7
core/modules/widgets/widget.js
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@@ -38,9 +38,10 @@ Widget.prototype.initialise = function(parseTreeNode,options) {
this.parseTreeNode = parseTreeNode;
this.wiki = options.wiki;
this.parentWidget = options.parentWidget;
this.variablesConstructor = function() {};
this.variablesConstructor.prototype = this.parentWidget ? this.parentWidget.variables : {};
this.variables = new this.variablesConstructor();
this.variables = Object.create(null);
if(this.parentWidget) {
Object.setPrototypeOf(this.variables,this.parentWidget.variables);
}
this.document = options.document;
this.attributes = {};
this.children = [];