angular-cn/modules/benchmarks/src/tree/tree_benchmark.js

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import {bootstrap, ViewContainerRef, Compiler} from 'angular2/angular2';
// TODO(radokirov): Once the application is transpiled by TS instead of Traceur,
// add those imports back into 'angular2/angular2';
import {Component, Directive} from 'angular2/src/core/annotations_impl/annotations';
import {View} from 'angular2/src/core/annotations_impl/view';
import {LifeCycle} from 'angular2/src/core/life_cycle/life_cycle';
import {reflector} from 'angular2/src/reflection/reflection';
import {ReflectionCapabilities} from 'angular2/src/reflection/reflection_capabilities';
import {DOM} from 'angular2/src/dom/dom_adapter';
import {isPresent} from 'angular2/src/facade/lang';
import {List} from 'angular2/src/facade/collection';
import {window, document, gc} from 'angular2/src/facade/browser';
import {getIntParameter, getStringParameter, bindAction} from 'angular2/src/test_lib/benchmark_util';
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import {NgIf} from 'angular2/directives';
import {BrowserDomAdapter} from 'angular2/src/dom/browser_adapter';
import {APP_VIEW_POOL_CAPACITY} from 'angular2/src/core/compiler/view_pool';
import {bind} from 'angular2/di';
function createBindings():List {
var viewCacheCapacity = getStringParameter('viewcache') == 'true' ? 10000 : 1;
return [
bind(APP_VIEW_POOL_CAPACITY).toValue(viewCacheCapacity)
];
}
function setupReflector() {
reflector.reflectionCapabilities = new ReflectionCapabilities();
}
var BASELINE_TREE_TEMPLATE;
var BASELINE_IF_TEMPLATE;
export function main() {
BrowserDomAdapter.makeCurrent();
var maxDepth = getIntParameter('depth');
setupReflector();
BASELINE_TREE_TEMPLATE = DOM.createTemplate(
'<span>_<template class="ng-binding"></template><template class="ng-binding"></template></span>');
BASELINE_IF_TEMPLATE = DOM.createTemplate(
'<span template="if"><tree></tree></span>');
var app;
var lifeCycle;
var baselineRootTreeComponent;
var count = 0;
function ng2DestroyDom() {
// TODO: We need an initial value as otherwise the getter for data.value will fail
// --> this should be already caught in change detection!
app.initData = new TreeNode('', null, null);
lifeCycle.tick();
}
function profile(create, destroy, name) {
return function() {
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window.console.profile(name + ' w GC');
var duration = 0;
var count = 0;
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while(count++ < 150) {
gc();
var start = window.performance.now();
create();
duration += window.performance.now() - start;
destroy();
}
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window.console.profileEnd(name + ' w GC');
window.console.log(`Iterations: ${count}; time: ${duration / count} ms / iteration`);
window.console.profile(name + ' w/o GC');
duration = 0;
count = 0;
while(count++ < 150) {
var start = window.performance.now();
create();
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duration += window.performance.now() - start;
destroy();
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}
window.console.profileEnd(name + ' w/o GC');
window.console.log(`Iterations: ${count}; time: ${duration / count} ms / iteration`);
};
}
function ng2CreateDom() {
var values = count++ % 2 == 0 ?
['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '*'] :
['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', '-'];
app.initData = buildTree(maxDepth, values, 0);
lifeCycle.tick();
}
function noop() {}
function initNg2() {
bootstrap(AppComponent, createBindings()).then((ref) => {
var injector = ref.injector;
lifeCycle = injector.get(LifeCycle);
app = injector.get(AppComponent);
bindAction('#ng2DestroyDom', ng2DestroyDom);
bindAction('#ng2CreateDom', ng2CreateDom);
bindAction('#ng2UpdateDomProfile', profile(ng2CreateDom, noop, 'ng2-update'));
bindAction('#ng2CreateDomProfile', profile(ng2CreateDom, ng2DestroyDom, 'ng2-create'));
});
}
function baselineDestroyDom() {
baselineRootTreeComponent.update(new TreeNode('', null, null));
}
function baselineCreateDom() {
var values = count++ % 2 == 0 ?
['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '*'] :
['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', '-'];
baselineRootTreeComponent.update(buildTree(maxDepth, values, 0));
}
function initBaseline() {
var tree = DOM.createElement('tree');
DOM.appendChild(DOM.querySelector(document, 'baseline'), tree);
baselineRootTreeComponent = new BaseLineTreeComponent(tree);
bindAction('#baselineDestroyDom', baselineDestroyDom);
bindAction('#baselineCreateDom', baselineCreateDom);
bindAction('#baselineUpdateDomProfile', profile(baselineCreateDom, noop, 'baseline-update'));
bindAction('#baselineCreateDomProfile', profile(baselineCreateDom, baselineDestroyDom, 'baseline-create'));
}
initNg2();
initBaseline();
}
class TreeNode {
value:string;
left:TreeNode;
right:TreeNode;
constructor(value, left, right) {
this.value = value;
this.left = left;
this.right = right;
}
}
function buildTree(maxDepth, values, curDepth) {
if (maxDepth === curDepth) return new TreeNode('', null, null);
return new TreeNode(
values[curDepth],
buildTree(maxDepth, values, curDepth+1),
buildTree(maxDepth, values, curDepth+1));
}
// http://jsperf.com/nextsibling-vs-childnodes
class BaseLineTreeComponent {
element;
value:BaseLineInterpolation;
left:BaseLineIf;
right:BaseLineIf;
constructor(element) {
this.element = element;
var clone = DOM.clone(BASELINE_TREE_TEMPLATE.content.firstChild);
var shadowRoot = this.element.createShadowRoot();
DOM.appendChild(shadowRoot, clone);
var child = clone.firstChild;
this.value = new BaseLineInterpolation(child);
child = DOM.nextSibling(child);
this.left = new BaseLineIf(child);
child = DOM.nextSibling(child);
this.right = new BaseLineIf(child);
}
update(value:TreeNode) {
this.value.update(value.value);
this.left.update(value.left);
this.right.update(value.right);
}
}
class BaseLineInterpolation {
value:string;
textNode;
constructor(textNode) {
this.value = null;
this.textNode = textNode;
}
update(value:string) {
if (this.value !== value) {
this.value = value;
DOM.setText(this.textNode, value + ' ');
}
}
}
class BaseLineIf {
condition:boolean;
component:BaseLineTreeComponent;
anchor;
constructor(anchor) {
this.anchor = anchor;
this.condition = false;
this.component = null;
}
update(value:TreeNode) {
var newCondition = isPresent(value);
if (this.condition !== newCondition) {
this.condition = newCondition;
if (isPresent(this.component)) {
DOM.remove(this.component.element);
this.component = null;
}
if (this.condition) {
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var element = DOM.firstChild(DOM.clone(BASELINE_IF_TEMPLATE).content);
this.anchor.parentNode.insertBefore(element, DOM.nextSibling(this.anchor));
this.component = new BaseLineTreeComponent(DOM.firstChild(element));
}
}
if (isPresent(this.component)) {
this.component.update(value);
}
}
}
@Component({selector: 'app'})
@View({
directives: [TreeComponent],
template: `<tree [data]='initData'></tree>`
})
class AppComponent {
initData:TreeNode;
constructor() {
// TODO: We need an initial value as otherwise the getter for data.value will fail
// --> this should be already caught in change detection!
this.initData = new TreeNode('', null, null);
}
}
@Component({
selector: 'tree',
properties: ['data']
})
@View({
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directives: [TreeComponent, NgIf],
template: `<span> {{data.value}} <span template='ng-if data.right != null'><tree [data]='data.right'></tree></span><span template='ng-if data.left != null'><tree [data]='data.left'></tree></span></span>`
})
class TreeComponent {
data:TreeNode;
}