fix(ivy): only generate TViews once per embedded template (#23385)
PR Close #23385
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@ -19,13 +19,14 @@ import {EmbeddedViewRef as viewEngine_EmbeddedViewRef, ViewRef as viewEngine_Vie
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import {Type} from '../type';
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import {assertGreaterThan, assertLessThan, assertNotNull} from './assert';
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import {addToViewTree, assertPreviousIsParent, createLContainer, createLNodeObject, getDirectiveInstance, getPreviousOrParentNode, getRenderer, isComponent, renderEmbeddedTemplate, resolveDirective} from './instructions';
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import {addToViewTree, assertPreviousIsParent, createLContainer, createLNodeObject, createTView, getDirectiveInstance, getPreviousOrParentNode, getRenderer, isComponent, renderEmbeddedTemplate, resolveDirective} from './instructions';
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import {LContainer} from './interfaces/container';
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import {ComponentTemplate, DirectiveDef, DirectiveDefList, PipeDefList} from './interfaces/definition';
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import {LInjector} from './interfaces/injector';
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import {LContainerNode, LElementNode, LNode, LNodeType, LViewNode, TNodeFlags} from './interfaces/node';
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import {QueryReadType} from './interfaces/query';
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import {Renderer3} from './interfaces/renderer';
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import {LView} from './interfaces/view';
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import {LView, TView} from './interfaces/view';
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import {assertNodeOfPossibleTypes, assertNodeType} from './node_assert';
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import {insertView, removeView} from './node_manipulation';
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import {notImplemented, stringify} from './util';
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@ -568,7 +569,6 @@ export function getOrCreateContainerRef(di: LInjector): viewEngine_ViewContainer
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const vcRefHost = di.node;
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ngDevMode && assertNodeOfPossibleTypes(vcRefHost, LNodeType.Container, LNodeType.Element);
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const lContainer = createLContainer(vcRefHost.parent !, vcRefHost.view);
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const lContainerNode: LContainerNode = createLNodeObject(
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LNodeType.Container, vcRefHost.view, vcRefHost.parent !, undefined, lContainer, null);
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@ -695,29 +695,35 @@ class ViewContainerRef implements viewEngine_ViewContainerRef {
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* @returns The TemplateRef instance to use
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*/
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export function getOrCreateTemplateRef<T>(di: LInjector): viewEngine_TemplateRef<T> {
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ngDevMode && assertNodeType(di.node, LNodeType.Container);
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const data = (di.node as LContainerNode).data;
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const tView = di.node.view.tView;
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return di.templateRef || (di.templateRef = new TemplateRef<any>(
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getOrCreateElementRef(di), data.template !, getRenderer(),
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tView.directiveRegistry, tView.pipeRegistry));
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if (!di.templateRef) {
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ngDevMode && assertNodeType(di.node, LNodeType.Container);
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const hostNode = di.node as LContainerNode;
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const hostTNode = hostNode.tNode !;
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const hostTView = hostNode.view.tView;
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if (!hostTNode.tViews) {
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hostTNode.tViews = createTView(hostTView.directiveRegistry, hostTView.pipeRegistry);
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}
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ngDevMode && assertNotNull(hostTNode.tViews, 'TView must be allocated');
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di.templateRef = new TemplateRef<any>(
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getOrCreateElementRef(di), hostTNode.tViews as TView, hostNode.data.template !,
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getRenderer(), hostTView.directiveRegistry, hostTView.pipeRegistry);
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}
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return di.templateRef;
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}
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class TemplateRef<T> implements viewEngine_TemplateRef<T> {
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readonly elementRef: viewEngine_ElementRef;
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private _template: ComponentTemplate<T>;
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constructor(
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elementRef: viewEngine_ElementRef, template: ComponentTemplate<T>,
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private _renderer: Renderer3, private _directives: DirectiveDefList|null,
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private _pipes: PipeDefList|null) {
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elementRef: viewEngine_ElementRef, private _tView: TView,
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private _template: ComponentTemplate<T>, private _renderer: Renderer3,
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private _directives: DirectiveDefList|null, private _pipes: PipeDefList|null) {
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this.elementRef = elementRef;
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this._template = template;
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}
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createEmbeddedView(context: T): viewEngine_EmbeddedViewRef<T> {
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const viewNode = renderEmbeddedTemplate(
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null, this._template, context, this._renderer, this._directives, this._pipes);
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null, this._tView, this._template, context, this._renderer, this._directives, this._pipes);
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return addDestroyable(new EmbeddedViewRef(viewNode, this._template, context));
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}
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}
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@ -9,7 +9,7 @@
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import './ng_dev_mode';
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import {assertEqual, assertLessThan, assertNotEqual, assertNotNull, assertNull, assertSame} from './assert';
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import {LContainer, TContainer} from './interfaces/container';
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import {LContainer} from './interfaces/container';
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import {LInjector} from './interfaces/injector';
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import {CssSelectorList, LProjection, NG_PROJECT_AS_ATTR_NAME} from './interfaces/projection';
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import {LQueries} from './interfaces/query';
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@ -468,9 +468,20 @@ export function renderTemplate<T>(
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return host;
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}
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/**
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* Used for rendering embedded views (e.g. dynamically created views)
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*
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* Dynamically created views must store/retrieve their TViews differently from component views
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* because their template functions are nested in the template functions of their hosts, creating
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* closures. If their host template happens to be an embedded template in a loop (e.g. ngFor inside
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* an ngFor), the nesting would mean we'd have multiple instances of the template function, so we
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* can't store TViews in the template function itself (as we do for comps). Instead, we store the
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* TView for dynamically created views on their host TNode, which only has one instance.
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*/
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export function renderEmbeddedTemplate<T>(
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viewNode: LViewNode | null, template: ComponentTemplate<T>, context: T, renderer: Renderer3,
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directives?: DirectiveDefList | null, pipes?: PipeDefList | null): LViewNode {
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viewNode: LViewNode | null, tView: TView, template: ComponentTemplate<T>, context: T,
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renderer: Renderer3, directives?: DirectiveDefList | null,
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pipes?: PipeDefList | null): LViewNode {
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const _isParent = isParent;
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const _previousOrParentNode = previousOrParentNode;
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let oldView: LView;
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@ -480,7 +491,6 @@ export function renderEmbeddedTemplate<T>(
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previousOrParentNode = null !;
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if (viewNode == null) {
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const tView = getOrCreateTView(template, directives || null, pipes || null);
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const lView = createLView(-1, renderer, tView, template, context, LViewFlags.CheckAlways);
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viewNode = createLNode(null, LNodeType.View, null, lView);
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@ -572,18 +582,27 @@ export function elementStart(
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if (attrs) setUpAttributes(native, attrs);
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appendChild(node.parent !, native, currentView);
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createDirectivesAndLocals(index, name, attrs, localRefs, null);
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createDirectivesAndLocals(index, name, attrs, localRefs, false);
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return native;
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}
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/**
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* Creates directive instances and populates local refs.
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*
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* @param index Index of the current node (to create TNode)
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* @param name Tag name of the current node
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* @param attrs Attrs of the current node
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* @param localRefs Local refs of the current node
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* @param inlineViews Whether or not this node will create inline views
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*/
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function createDirectivesAndLocals(
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index: number, name: string | null, attrs: string[] | null | undefined,
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localRefs: string[] | null | undefined, containerData: TView[] | null) {
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localRefs: string[] | null | undefined, inlineViews: boolean) {
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const node = previousOrParentNode;
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if (firstTemplatePass) {
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ngDevMode && ngDevMode.firstTemplatePass++;
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ngDevMode && assertDataInRange(index - 1);
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node.tNode = tData[index] = createTNode(name, attrs || null, containerData);
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node.tNode = tData[index] = createTNode(name, attrs || null, inlineViews ? [] : null);
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cacheMatchingDirectivesForNode(node.tNode, currentView.tView, localRefs || null);
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} else {
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instantiateDirectivesDirectly();
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@ -751,6 +770,13 @@ function saveResolvedLocalsInData(): void {
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function getOrCreateTView(
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template: ComponentTemplate<any>, directives: DirectiveDefListOrFactory | null,
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pipes: PipeDefListOrFactory | null): TView {
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// TODO(misko): reading `ngPrivateData` here is problematic for two reasons
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// 1. It is a megamorphic call on each invocation.
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// 2. For nested embedded views (ngFor inside ngFor) the template instance is per
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// outer template invocation, which means that no such property will exist
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// Correct solution is to only put `ngPrivateData` on the Component template
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// and not on embedded templates.
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return template.ngPrivateData ||
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(template.ngPrivateData = createTView(directives, pipes) as never);
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}
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@ -994,14 +1020,14 @@ export function elementProperty<T>(
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/**
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* Constructs a TNode object from the arguments.
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*
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* @param tagName
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* @param attrs
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* @param data
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* @param tagName The tag name of the node
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* @param attrs The attributes defined on this ndoe
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* @param tViews Any TViews attached to this node
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* @param localNames A list of local names and their matching indices
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* @returns the TNode object
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*/
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function createTNode(
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tagName: string | null, attrs: string[] | null, data: TContainer | null): TNode {
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tagName: string | null, attrs: string[] | null, tViews: TView[] | null): TNode {
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ngDevMode && ngDevMode.tNode++;
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return {
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flags: 0,
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@ -1011,7 +1037,7 @@ function createTNode(
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initialInputs: undefined,
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inputs: undefined,
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outputs: undefined,
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data: data
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tViews: tViews
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};
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}
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@ -1224,18 +1250,10 @@ export function textBinding<T>(index: number, value: T | NO_CHANGE): void {
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let existingNode = data[index] as LTextNode;
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ngDevMode && assertNotNull(existingNode, 'LNode should exist');
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ngDevMode && assertNotNull(existingNode.native, 'native element should exist');
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if (existingNode.native) {
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// If DOM node exists and value changed, update textContent
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ngDevMode && ngDevMode.rendererSetText++;
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value !== NO_CHANGE &&
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(isProceduralRenderer(renderer) ? renderer.setValue(existingNode.native, stringify(value)) :
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existingNode.native.textContent = stringify(value));
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} else {
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// Node was created but DOM node creation was delayed. Create and append now.
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ngDevMode && ngDevMode.rendererCreateTextNode++;
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existingNode.native = createTextNode(value, renderer);
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insertChild(existingNode, currentView);
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}
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ngDevMode && ngDevMode.rendererSetText++;
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value !== NO_CHANGE &&
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(isProceduralRenderer(renderer) ? renderer.setValue(existingNode.native, stringify(value)) :
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existingNode.native.textContent = stringify(value));
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}
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//////////////////////////
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@ -1451,7 +1469,7 @@ export function container(
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// Containers are added to the current view tree instead of their embedded views
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// because views can be removed and re-inserted.
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addToViewTree(currentView, node.data);
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createDirectivesAndLocals(index, tagName || null, attrs, localRefs, []);
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createDirectivesAndLocals(index, tagName || null, attrs, localRefs, template == null);
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isParent = false;
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ngDevMode && assertNodeType(previousOrParentNode, LNodeType.Container);
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@ -1516,9 +1534,12 @@ function refreshDynamicChildren() {
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if (current.dynamicViewCount !== 0 && (current as LContainer).views) {
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const container = current as LContainer;
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for (let i = 0; i < container.views.length; i++) {
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const view = container.views[i];
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const lViewNode = container.views[i];
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// The directives and pipes are not needed here as an existing view is only being refreshed.
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renderEmbeddedTemplate(view, view.data.template !, view.data.context !, renderer);
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const dynamicView = lViewNode.data;
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ngDevMode && assertNotNull(dynamicView.tView, 'TView must be allocated');
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renderEmbeddedTemplate(
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lViewNode, dynamicView.tView, dynamicView.template !, dynamicView.context !, renderer);
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}
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}
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}
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@ -1588,23 +1609,24 @@ export function embeddedViewStart(viewBlockId: number): RenderFlags {
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/**
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* Initialize the TView (e.g. static data) for the active embedded view.
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*
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* Each embedded view needs to set the global tData variable to the static data for
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* that view. Otherwise, the view's static data for a particular node would overwrite
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* the static data for a node in the view above it with the same index (since it's in the
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* same template).
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* Each embedded view block must create or retrieve its own TView. Otherwise, the embedded view's
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* static data for a particular node would overwrite the static data for a node in the view above
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* it with the same index (since it's in the same template).
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*
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* @param viewIndex The index of the TView in TContainer
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* @param viewIndex The index of the TView in TNode.tViews
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* @param parent The parent container in which to look for the view's static data
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* @returns TView
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*/
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function getOrCreateEmbeddedTView(viewIndex: number, parent: LContainerNode): TView {
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ngDevMode && assertNodeType(parent, LNodeType.Container);
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const tContainer = (parent !.tNode as TContainerNode).data;
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if (viewIndex >= tContainer.length || tContainer[viewIndex] == null) {
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const containerTViews = (parent !.tNode as TContainerNode).tViews as TView[];
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ngDevMode && assertNotNull(containerTViews, 'TView expected');
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ngDevMode && assertEqual(Array.isArray(containerTViews), true, 'TViews should be in an array');
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if (viewIndex >= containerTViews.length || containerTViews[viewIndex] == null) {
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const tView = currentView.tView;
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tContainer[viewIndex] = createTView(tView.directiveRegistry, tView.pipeRegistry);
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containerTViews[viewIndex] = createTView(tView.directiveRegistry, tView.pipeRegistry);
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}
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return tContainer[viewIndex];
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return containerTViews[viewIndex];
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}
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/** Marks the end of an embedded view. */
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@ -82,24 +82,6 @@ export interface LContainer {
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queries: LQueries|null;
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}
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/**
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* The static equivalent of LContainer, used in TContainerNode.
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*
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* The container needs to store static data for each of its embedded views
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* (TViews). Otherwise, nodes in embedded views with the same index as nodes
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* in their parent views will overwrite each other, as they are in
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* the same template.
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*
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* Each index in this array corresponds to the static data for a certain
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* view. So if you had V(0) and V(1) in a container, you might have:
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*
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* [
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* [{tagName: 'div', attrs: ...}, null], // V(0) TView
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* [{tagName: 'button', attrs ...}, null] // V(1) TView
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* ]
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*/
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export type TContainer = TView[];
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// Note: This hack is necessary so we don't erroneously get a circular dependency
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// failure based on types.
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export const unusedValueExportToPlacateAjd = 1;
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@ -6,7 +6,7 @@
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* found in the LICENSE file at https://angular.io/license
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*/
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import {LContainer, TContainer} from './container';
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import {LContainer} from './container';
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import {LInjector} from './injector';
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import {LProjection} from './projection';
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import {LQueries} from './query';
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@ -283,21 +283,33 @@ export interface TNode {
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outputs: PropertyAliases|null|undefined;
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/**
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* The static data equivalent of LNode.data.
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* The TView or TViews attached to this node.
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*
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* If this TNode corresponds to an LContainerNode, the container will
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* need to store separate static data for each of its views (TContainer).
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* If this TNode corresponds to an LContainerNode with inline views, the container will
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* need to store separate static data for each of its view blocks (TView[]). Otherwise,
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* nodes in inline views with the same index as nodes in their parent views will overwrite
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* each other, as they are in the same template.
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*
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* If this TNode corresponds to an LElementNode, data will be null.
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* Each index in this array corresponds to the static data for a certain
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* view. So if you had V(0) and V(1) in a container, you might have:
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*
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* [
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* [{tagName: 'div', attrs: ...}, null], // V(0) TView
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* [{tagName: 'button', attrs ...}, null] // V(1) TView
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*
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* If this TNode corresponds to an LContainerNode with a template (e.g. structural
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* directive), the template's TView will be stored here.
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*
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* If this TNode corresponds to an LElementNode, tViews will be null .
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*/
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data: TContainer|null;
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tViews: TView|TView[]|null;
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}
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/** Static data for an LElementNode */
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export interface TElementNode extends TNode { data: null; }
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export interface TElementNode extends TNode { tViews: null; }
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/** Static data for an LContainerNode */
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export interface TContainerNode extends TNode { data: TContainer; }
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export interface TContainerNode extends TNode { tViews: TView|TView[]|null; }
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/**
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* This mapping is necessary so we can set input properties and output listeners
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@ -102,18 +102,18 @@ describe('instructions', () => {
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elementStart(0, 'div', ['style', 'height: 10px']);
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elementEnd();
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}
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const fixture = new TemplateFixture(createDivWithStyle);
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it('should add style', () => {
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const fixture = new TemplateFixture(createDivWithStyle);
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fixture.update(() => elementStyle(0, {'background-color': 'red'}));
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expect(fixture.html).toEqual('<div style="height: 10px; background-color: red;"></div>');
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});
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});
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describe('elementClass', () => {
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const fixture = new TemplateFixture(createDiv);
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it('should add class', () => {
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const fixture = new TemplateFixture(createDiv);
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fixture.update(() => elementClass(0, 'multiple classes'));
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expect(fixture.html).toEqual('<div class="multiple classes"></div>');
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});
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@ -132,34 +132,34 @@ describe('instructions', () => {
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static ngComponentDef = defineComponent({
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type: NestedLoops,
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selectors: [['todo-app']],
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selectors: [['nested-loops']],
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factory: function ToDoAppComponent_Factory() { return new NestedLoops(); },
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template: function ToDoAppComponent_Template(rf: RenderFlags, ctx: NestedLoops) {
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if (rf & 1) {
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if (rf & RenderFlags.Create) {
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container(0, ToDoAppComponent_NgForOf_Template_0, null, _c0);
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}
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if (rf & 2) {
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if (rf & RenderFlags.Update) {
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elementProperty(0, 'ngForOf', bind(ctx.rows));
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}
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function ToDoAppComponent_NgForOf_Template_0(
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rf: RenderFlags, ctx0: NgForOfContext<any>) {
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if (rf & 1) {
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if (rf & RenderFlags.Create) {
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elementStart(0, 'ul');
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container(1, ToDoAppComponent_NgForOf_NgForOf_Template_1, null, _c0);
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elementEnd();
|
||||
}
|
||||
if (rf & 2) {
|
||||
if (rf & RenderFlags.Update) {
|
||||
const row_r2 = ctx0.$implicit;
|
||||
elementProperty(1, 'ngForOf', bind(row_r2));
|
||||
}
|
||||
function ToDoAppComponent_NgForOf_NgForOf_Template_1(
|
||||
rf: RenderFlags, ctx1: NgForOfContext<any>) {
|
||||
if (rf & 1) {
|
||||
if (rf & RenderFlags.Create) {
|
||||
elementStart(0, 'li');
|
||||
text(1);
|
||||
elementEnd();
|
||||
}
|
||||
if (rf & 2) {
|
||||
if (rf & RenderFlags.Update) {
|
||||
const col_r3 = ctx1.$implicit;
|
||||
textBinding(1, interpolation1('', col_r3, ''));
|
||||
}
|
||||
|
@ -171,8 +171,8 @@ describe('instructions', () => {
|
|||
}
|
||||
const fixture = new ComponentFixture(NestedLoops);
|
||||
expect(ngDevMode).toHaveProperties({
|
||||
// Expect: host view + component + *ngForRow + *ngForCol
|
||||
tView: 7, // should be: 4,
|
||||
// Expect: fixture view/Host view + component + ngForRow + ngForCol
|
||||
tView: 4, // should be: 4,
|
||||
});
|
||||
|
||||
});
|
||||
|
|
|
@ -830,7 +830,7 @@ describe('render3 integration test', () => {
|
|||
|
||||
const oldTemplateData = (Template as any).ngPrivateData;
|
||||
const oldContainerData = (oldTemplateData as any).data[0];
|
||||
const oldElementData = oldContainerData.data[0][0];
|
||||
const oldElementData = oldContainerData.tViews[0][0];
|
||||
expect(oldContainerData).not.toBeNull();
|
||||
expect(oldElementData).not.toBeNull();
|
||||
|
||||
|
@ -839,7 +839,7 @@ describe('render3 integration test', () => {
|
|||
|
||||
const newTemplateData = (Template as any).ngPrivateData;
|
||||
const newContainerData = (oldTemplateData as any).data[0];
|
||||
const newElementData = oldContainerData.data[0][0];
|
||||
const newElementData = oldContainerData.tViews[0][0];
|
||||
expect(newTemplateData === oldTemplateData).toBe(true);
|
||||
expect(newContainerData === oldContainerData).toBe(true);
|
||||
expect(newElementData === oldElementData).toBe(true);
|
||||
|
|
|
@ -19,7 +19,7 @@ function testLStaticData(tagName: string, attrs: string[] | null): TNode {
|
|||
initialInputs: undefined,
|
||||
inputs: undefined,
|
||||
outputs: undefined,
|
||||
data: null,
|
||||
tViews: null,
|
||||
};
|
||||
}
|
||||
|
||||
|
|
|
@ -147,30 +147,24 @@ describe('ViewContainerRef', () => {
|
|||
const tplRef = getOrCreateTemplateRef(getOrCreateNodeInjectorForNode(load(0)));
|
||||
elementProperty(0, 'tplRef', bind(tplRef));
|
||||
containerRefreshStart(0);
|
||||
let rf1 = embeddedViewStart(1);
|
||||
if (rf1 & RenderFlags.Create) {
|
||||
elementStart(0, 'header');
|
||||
elementEnd();
|
||||
}
|
||||
embeddedViewEnd();
|
||||
containerRefreshEnd();
|
||||
}
|
||||
|
||||
const fixture = new TemplateFixture(createTemplate, updateTemplate, [DirectiveWithVCRef]);
|
||||
expect(fixture.html).toEqual('<header></header><footer></footer>');
|
||||
expect(fixture.html).toEqual('<footer></footer>');
|
||||
|
||||
createView('A');
|
||||
fixture.update();
|
||||
expect(fixture.html).toEqual('<header></header>A<footer></footer>');
|
||||
expect(fixture.html).toEqual('A<footer></footer>');
|
||||
|
||||
createView('B');
|
||||
createView('C');
|
||||
fixture.update();
|
||||
expect(fixture.html).toEqual('<header></header>ABC<footer></footer>');
|
||||
expect(fixture.html).toEqual('ABC<footer></footer>');
|
||||
|
||||
createView('Y', 0);
|
||||
fixture.update();
|
||||
expect(fixture.html).toEqual('<header></header>YABC<footer></footer>');
|
||||
expect(fixture.html).toEqual('YABC<footer></footer>');
|
||||
|
||||
expect(() => { createView('Z', -1); }).toThrow();
|
||||
expect(() => { createView('Z', 5); }).toThrow();
|
||||
|
|
Loading…
Reference in New Issue